Journal of Microbiology

Review

Targeting innate immune sensors for therapeutic strategies in infectious diseases: Seyun Shin, Young Ki Choi, SangJoon Lee; J. Microbiol. 2025;63(6):e2503009. Published online June 30, 2025; DOI: https://doi.org/10.71150/jm.2503009

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The innate immune system relies on innate immune sensors, such as pattern recognition receptors (PRRs), to detect pathogens and initiate immune responses, crucial for controlling infections but also implicated in inflammatory diseases. These innate immune sensors, including Toll-like receptors (TLRs), nod-like receptors (NLRs), RIG-I-like receptors (RLRs), absent in melanoma 2 (AIM2), and Z-DNA binding protein 1 (ZBP1) trigger signaling pathways that produce cytokines, modulating inflammation and cell death. Traditional therapies focus on directly targeting pathogens; however, host-targeting therapeutic strategies have emerged as innovative approaches to modulate innate immune sensor activity. These strategies aim to fine-tune the immune response, either enhancing antiviral defenses or mitigating hyperinflammation to prevent tissue damage. This review explores innate immune sensor-based therapeutic approaches, including inhibitors, agonists, and antagonists, that enhance antiviral defense or suppress harmful inflammation, highlighting innate immune sensors as promising targets in infectious and inflammatory disease treatment.

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A new fucosylated glucuronoxylomannan from the fruit bodies of Tremella aurantia: structural characterization and immunoenhancing activity on seasonal influenza mRNA vaccine
Jing Chen, Yuan Ma, Zhi-Min Rao, Song-Lin Jiang, Ying-Jun Lou, Karim Malik, Arman Chowdhury, Hua-Zhong Ying, Chen-Huan Yu
Carbohydrate Polymers.2026; 373: 124660. CrossRef
Z-DNA interaction proteins - insights from ChIP-seq data
Michaela Dobrovolná, Václav Brázda
Biochemical and Biophysical Research Communications.2025; 790: 152910. CrossRef
AIM2 drives inflammatory cell death and monkeypox pathogenesis
Jueun Oh, Yun-Ho Hwang, Jihye Lee, Cheong Seok, SuHyeon Oh, Hye Yoon Kim, Nabukenya Mariam, Jaeyoung Ahn, GyeongJu Yu, Jaewoo Park, Hayeon Kim, Suhyun Kim, Seyun Shin, Min-Chul Jung, Jinwoo Gil, Joo Sang Lee, Young Ki Choi, Dokeun Kim, Daesik Kim, You-Jin
Cellular & Molecular Immunology.2025; 22(12): 1615. CrossRef

Full articles

The photosensitizer DH-I-180-3 regulates intracellular bacterial growth by increasing the secretion of proinflammatory cytokines via the NF-κB- and MAPK-mediated signaling pathways and promoting phagosome maturation in Salmonella-infected mouse macrophages: Hyo-Jung Kim, Eui-Kwon Jeong, Hyo-Ji Lee, Yu-Jin Jung; J. Microbiol. 2025;63(6):e2502003. Published online June 4, 2025; DOI: https://doi.org/10.71150/jm.2502003

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Abstract PDF

Photodynamic therapy (PDT) is a known strategy for treating cancer; in PDT, photosensitizers are activated by light stimulation and then induce reactive oxygen species (ROS) production to damage cancer tissues. Recently evidence has shown that PDT can also be used as a novel treatment strategy to control pathogenic bacteria. In previous studies, the photosensitizer DH-I-180-3 was reported to effectively regulate multidrug-resistant Mycobacterium tuberculosis growth. Here, we confirmed the effects of DH-I-180-3 on the antibacterial activity and inflammatory response of macrophages to Salmonella. Photoactivated DH-I-180-3 regulated intracellular bacterial growth in Salmonella-infected macrophages. Moreover, DH-I-180-3 increased intracellular ROS levels in Salmonella-infected macrophages. The phosphorylation of the intracellular signaling proteins IκBα and JNK1/2 was increased in DH-I-180-3-treated Salmonella-infected macrophages. Additionally, we observed that DH-I-180-3 significantly increased the mRNA expression and protein secretion of the proinflammatory cytokine TNF-α and promoted phagosome maturation by upregulating EEA1, LAMP1, and Cathepsin D in Salmonella-infected macrophages. Overall, these results demonstrate that photoactivated DH-I-180-3 enhances the bactericidal response to intracellular bacterial infection by promoting inflammatory signaling pathways and phagosome maturation. Therefore, DH-I-180-3 has the potential to be developed into PDT for treating bacterial-infection.

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Transcriptome Analysis Reveals Circadian Rhythmic Regulation of Lipid Metabolism and Immune Function in Chicken Livers
Jiahua Li, Jie Dong, Minjie Huang, Yuting Jin, Xiaodong Tan, Deqian Wang
Animals.2025; 15(22): 3241. CrossRef

Role of the LAMMER kinase LkhA in fungal development and aflatoxin production in Aspergillus flavus: Seong-Hwan Jeong, He-Jin Cho, Jae-Hyuk Yu, Hee-Moon Park, Hee-Soo Park; J. Microbiol. 2025;63(5):e2503007. Published online May 27, 2025; DOI: https://doi.org/10.71150/jm.2503007

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Abstract PDF: A well-conserved LAMMER kinase in yeast and filamentous fungi, is a dual-specificity kinase with multiple roles in fungal biology. In this study, we assessed the roles of LkhA in Aspergillus flavus, a toxigenic fungus that produces aflatoxin B1. lkhA deletion mutants exhibited defects in fungal growth, conidiophore development, and sclerotia formation. These mutants exhibited impaired tolerance to oxidative and cell wall stresses. Moreover, the absence of lkhA resulted in a decrease in aflatoxin B1 production. The kernel assay revealed that the lkhA deletion mutants exhibited reduced production of conidia and aflatoxin B1, implying that LkhA can affect fungal toxigenesis and pathogenicity. Taken together, these results demonstrate that LkhA is important for differentiation, mycotoxin production, and pathogenicity in A. flavus.

Review

Small regulatory RNAs as key modulators of antibiotic resistance in pathogenic bacteria: Yubin Yang, Hana Hyeon, Minju Joo, Kangseok Lee, Eunkyoung Shin; J. Microbiol. 2025;63(4):e2501027. Published online April 2, 2025; DOI: https://doi.org/10.71150/jm.2501027

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The escalating antibiotic resistance crisis poses a significant challenge to global public health, threatening the efficacy of current treatments and driving the emergence of multidrug-resistant pathogens. Among the various factors associated with bacterial antibiotic resistance, small regulatory RNAs (sRNAs) have emerged as pivotal post-transcriptional regulators which orchestrate bacterial adaptation to antibiotic pressure via diverse mechanisms. This review consolidates the current knowledge on sRNA-mediated mechanisms, focusing on drug uptake, drug efflux systems, lipopolysaccharides, cell wall modification, biofilm formation, and mutagenesis. Recent advances in transcriptomics and functional analyses have revealed novel sRNAs and their regulatory networks, expanding our understanding of resistance mechanisms. These findings highlight the potential of targeting sRNA-mediated pathways as an innovative therapeutic strategy to combat antibiotic resistance, and offer promising avenues for managing challenging bacterial infections.

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Biofilm, resistance, and quorum sensing: The triple threat in bacterial pathogenesis
Mohammad Nazrul Islam Bhuiyan
The Microbe.2025; 9: 100578. CrossRef
Biofilm maturation in carbapenem-resistant Pseudomonas aeruginosa is regulated by the sRNA PA213 and its corresponding encoded small protein
Yongli Song, Jie Li, Yating Zhang, Lingge Su, Shuang Qin, Chunyan Wu, Guibo Song
International Journal of Antimicrobial Agents.2025; 66(6): 107625. CrossRef

Minireview

Advances in functional analysis of the microbiome: Integrating metabolic modeling, metabolite prediction, and pathway inference with Next-Generation Sequencing data: Sungwon Jung; J. Microbiol. 2025;63(1):e.2411006. Published online January 24, 2025; DOI: https://doi.org/10.71150/jm.2411006

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This review explores current advancements in microbiome functional analysis enabled by next-generation sequencing technologies, which have transformed our understanding of microbial communities from mere taxonomic composition to their functional potential. We examine approaches that move beyond species identification to characterize microbial activities, interactions, and their roles in host health and disease. Genome-scale metabolic models allow for in-depth simulations of metabolic networks, enabling researchers to predict microbial metabolism, growth, and interspecies interactions in diverse environments. Additionally, computational methods for predicting metabolite profiles offer indirect insights into microbial metabolic outputs, which is crucial for identifying biomarkers and potential therapeutic targets. Functional pathway analysis tools further reveal microbial contributions to metabolic pathways, highlighting alterations in response to environmental changes and disease states. Together, these methods offer a powerful framework for understanding the complex metabolic interactions within microbial communities and their impact on host physiology. While significant progress has been made, challenges remain in the accuracy of predictive models and the completeness of reference databases, which limit the applicability of these methods in under-characterized ecosystems. The integration of these computational tools with multi-omic data holds promise for personalized approaches in precision medicine, allowing for targeted interventions that modulate the microbiome to improve health outcomes. This review highlights recent advances in microbiome functional analysis, providing a roadmap for future research and translational applications in human health and environmental microbiology.

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Microbiota, chronic inflammation, and health: The promise of inflammatome and inflammatomics for precision medicine and health care
Huan Zhang, Bing Jun Yang Lee, Tong Wang, Xuesong Xiang, Yafang Tan, Yanping Han, Yujing Bi, Fachao Zhi, Xin Wang, Fang He, Seppo J. Salminen, Baoli Zhu, Ruifu Yang
hLife.2025; 3(7): 307. CrossRef
Study on the Rhizosphere Soil Microbial Diversity of Five Common Orchidaceae Species in the Transitional Zone Between Warm Temperate and Subtropical Regions
Jingjing Du, Shengqian Guo, Xiaohang Li, Zhonghu Geng, Zhiliang Yuan, Xiqiang Song
Diversity.2025; 17(9): 605. CrossRef
Bioengineered Skin Microbiome: The Next Frontier in Personalized Cosmetics
Cherelle Atallah, Ayline El Abiad, Marita El Abiad, Mantoura Nakad, Jean Claude Assaf
Cosmetics.2025; 12(5): 205. CrossRef
Computational Metagenomics: State of the Art
Marco Antonio Pita-Galeana, Martin Ruhle, Lucía López-Vázquez, Guillermo de Anda-Jáuregui, Enrique Hernández-Lemus
International Journal of Molecular Sciences.2025; 26(18): 9206. CrossRef
Rotation of Corydalis yanhusuo with different crops enhances its quality and soil nutrients: a multi-dimensional analysis of rhizosphere microecology
Jia Liu, Qiang Yuan, Kejie Zhang, Xiaoxiao Sheng, Zixuan Zhu, Ning Sui, Hui Wang
BMC Plant Biology.2025;[Epub] CrossRef

Journal Articles

Gut Microbiota Dysbiosis Facilitates Susceptibility to Bloodstream Infection: Xiaomin Lin, Chun Lin, Xin Li, Fen Yao, Xiaoling Guo, Meimei Wang, Mi Zeng, Yumeng Yuan, Qingdong Xie, Xudong Huang, Xiaoyang Jiao; J. Microbiol. 2024;62(12):1113-1124. Published online December 2, 2024; DOI: https://doi.org/10.1007/s12275-024-00190-5

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To study the role of intestinal flora in the development of bloodstream infections (BSIs). 42 patients and 19 healthy controls (HCs) were screened into the study and their intestinal flora was measured by 16S rRNA gene sequencing. The bacterial diversity was significantly lower in the BSI group compared with that in the HCs (P < 0.001), and beta diversity was significantly differentiated between the two groups (PERMANOVA, P = 0.001). The four keystone species [Roseburia, Faecalibacterium, Prevotella, and Enterococcus (LDA > 4)] differed significantly between the two groups. Dysbiosis of fecal microbial ecology is a common condition present in patients with BSI. The proliferation of certain pathogens or reduction of SCFA-producing bacteria would cause susceptibility to BSI.

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Targeting gut microbiotasu-derived butyrate for Ferroptosis inhibition in Sepsis-induced myocardial dysfunction
Jianfei Xiong, Guoxiang Liu, Tianyuan Jia, Qian Yang, Changqing Zhu, Shiwei Wang
Journal of Molecular and Cellular Cardiology.2025; 209: 119. CrossRef

Comparative Secretory Efficiency of Two Chitosanase Signal Peptides from Bacillus subtilis in Escherichia coli: Tae-Yang Eom, Yehui Gang, Youngdeuk Lee, Yoon-Hyeok Kang, Eunyoung Jo, Svini Dileepa Marasinghe, Heung Sik Park, Gun-Hoo Park, Chulhong Oh; J. Microbiol. 2024;62(12):1155-1164. Published online November 25, 2024; DOI: https://doi.org/10.1007/s12275-024-00186-1

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Abstract PDF

The production of recombinant proteins in Escherichia coli is often challenged by cytoplasmic expression due to proteolytic degradation and inclusion body formation. Extracellular expression can overcome these problems by simplifying downstream processing and improving protein yields. This study aims to compare the efficiency of two Bacillus subtilis chitosanase signal peptides in mediating extracellular secretion in E. coli. We identified a naturally occurring mutant signal peptide (mCsn2-SP) from B. subtilis CH2 chitosanase (CH2CSN), which is characterized by a deletion of six amino acids in the N-region relative to the signal peptide (Csn1-SP) from B. subtilis CH1 chitosanase (CH1CSN). The CH1CSN and CH2CSN genes were cloned into the pET-11a vector and protein secretion was evaluated in E. coli BL21(DE3) host cells. Expression was induced with 0.1 mM and 1 mM isopropyl β-D-1-thiogalactopyranoside (IPTG) at 30 °C for one and three days. CH2CSN showed higher secretion levels compared to CH1CSN under all experimental conditions, especially with 0.1 mM IPTG induction for 3 days, which resulted in a 2.37-fold increase in secretion. Furthermore, it was demonstrated that mCsn2-SP is capable of secreting human Cu,Zn-superoxide dismutase (hSOD) in E. coli BL21(DE3) and successfully translocating it to the periplasmic region. This study represents the inaugural investigation into the utilisation of a naturally modified signal peptide, thereby corroborating the assertion that signal peptide deletion variants can influence protein secretion efficiency. Furthermore, the findings substantiate the proposition that such variants can serve as a viable alternative for the secretion of heterologous proteins in E. coli.

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Signal Peptides: From Molecular Mechanisms to Applications in Protein and Vaccine Engineering
Shuai Zhang, Zhihui He, Hui Wang, Jingbo Zhai
Biomolecules.2025; 15(6): 897. CrossRef

Investigation of Bottleneck Enzyme Through Flux Balance Analysis to Improve Glycolic Acid Production in Escherichia coli: Jungyeon Kim, Ye-Bin Kim, Ju-Young Kim, Min-Ju Seo, Soo-Jin Yeom, Bong Hyun Sung; J. Microbiol. 2024;62(11):1023-1033. Published online October 28, 2024; DOI: https://doi.org/10.1007/s12275-024-00175-4

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Abstract PDF

Amid rising environmental concerns, attempts have been made to produce glycolic acid (GA) using microbial processes with renewable carbon resources instead of using chemicals. The Dahms pathway for GA production uses xylose as a substrate and consists of relatively simple enzymatic steps. However, employing it leads to a decrease in cell growth and GA productivity. Systematically identifying and addressing metabolic bottlenecks in the Dahms pathway are essential for efficient glycolic acid (GA) production have not yet been performed. Through metabolic flux balance analysis, we found that insufficient aldehyde dehydrogenase (AldA) activity lowers GA production and negatively affects cell growth due to reduced energy production. Thus, we discovered a novel AldA isolated from Buttiauxella agrestis (BaAldA) demonstrated a 1.69-fold lower K_M and a 1.49-fold higher turnover rate (k_cat/K_M) than AldA from Escherichia coli (EcAldA). GA production in E. coli harboring BaAldA was 1.59 times higher than in the original strain. Fed-batch fermentation of E. coli harboring BaAldA produced 22.70 g/L GA with a yield of 0.497 g/g_xylose (98.2% of the theoretical maximum yield in the Dahms pathway), showing a higher final yield for GA than previously reported in E. coli. Our novel BaAldA enzyme shows great potential for the production of GA using microorganisms or enzymes. Furthermore, our approach to identifying metabolic bottlenecks using flux balance analysis could be utilized to enhance the microbial production of various desirable products in future studies.

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High production of glycolic acid by Klebsiella pneumoniae: Engineering metabolic pathways and optimizing culture conditions
Sang-Gyu Jeon, Sun-Yeon Heo, Jung-Hyun Ju, Soo-Jin Yeom, Baek-Rock Oh
Bioresource Technology.2026; 440: 133418. CrossRef
In silico identification of gene targets to enhance C12 fatty acid production in Escherichia coli
Paul Matthay, Thomas Schalck, Kenneth Simoens, Dorien Kerstens, Bert Sels, Natalie Verstraeten, Kristel Bernaerts, Jan Michiels
Applied Microbiology and Biotechnology.2025;[Epub] CrossRef

Review

Recent Advances of Nipah Virus Disease: Pathobiology to Treatment and Vaccine Advancement: Sagnik Saha, Manojit Bhattacharya, Sang-Soo Lee, Chiranjib Chakraborty; J. Microbiol. 2024;62(10):811-828. Published online September 18, 2024; DOI: https://doi.org/10.1007/s12275-024-00168-3

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The zoonotic infection of the Nipah virus (NiV) has yet again appeared in 2023 in Kerala state, India. The virus, which has a mortality rate ranging from about 40 to 70%, has already infected India five times, the first being in 2001. The current infection is the sixth virus outbreak in the Indian population. In 1998, the first NiV infection was noted in one village in Malaysia. After that, outbreaks from other South and Southeast Asian countries have been reported periodically. It can spread between humans through contact with body fluids. Therefore, it is unlikely to generate a new pandemic. However, there is a considerable knowledge gap in the different areas of NiV. To date, no approved vaccines or treatments have been available. To fulfil the knowledge gap, the review article provided a detailed overview of the genome and genome-encoded proteins, epidemiology, transmission, pathobiology, immunobiology, diagnosis, prevention and control measures, therapeutics (monoclonal antibodies and drug molecules), and vaccine advancement of the emerging and deadly pathogen. The advanced information will help researchers to develop safe and effective NiV vaccine and treatment regimens worldwide.

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An Overview of Nipah Virus Infection
Ujjawal Singh, Ramsha Sharma, Raj Kamal, Ranjeet Kumar
Anti-Infective Agents.2025;[Epub] CrossRef
Antiviral effects of heme oxygenase-1 against canine coronavirus and canine influenza virus in vitro
Jae-Hyeong Kim, Dong-Hwi Kim, Kyu-Beom Lim, Joong-Bok Lee, Seung-Yong Park, Chang-Seon Song, Sang-Won Lee, Dong-Hun Lee, Do-Geun Kim, Hun-Young Yoon, In-Soo Choi
Journal of Microbiology.2025; 63(5): e2501029. CrossRef
Efficient and modular reverse genetics system for rapid generation of recombinant severe acute respiratory syndrome coronavirus 2
Sojung Bae, Jinjong Myoung
Journal of Microbiology.2025; 63(7): e2504015. CrossRef

Journal Articles

In Silico Intensive Analysis for the E4 Gene Evolution of Human Adenovirus Species D: Chanhee Lee, Anyeseu Park, Jeong Yoon Lee; J. Microbiol. 2024;62(5):409-418. Published online April 30, 2024; DOI: https://doi.org/10.1007/s12275-024-00132-1

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Abstract PDF: Adenovirus (Ad) is a ubiquitous pathogen capable of infecting a wide range of animals and humans. Human Adenovirus (HAdV) can cause severe infection, particularly in individuals with compromised immune systems. To date, over 110 types of HAdV have been classified into seven species from A to G, with the majority belonging to the human adenovirus species D (HAdV-D). In the HAdV-D, the most significant factor for the creation of new adenovirus types is homologous recombination between viral genes involved in determining the virus tropism or evading immune system of host cells. The E4 gene, consisting of seven Open Reading Frames (ORFs), plays a role in both the regulation of host cell metabolism and the replication of viral genes. Despite long-term studies, the function of each ORF remains unclear. Based on our updated information, ORF2, ORF3, and ORF4 have been identified as regions with relatively high mutations compared to other ORFs in the E4 gene, through the use of in silico comparative analysis. Additionally, we managed to visualize high mutation sections, previously undetectable at the DNA level, through a powerful amino acid sequence analysis tool known as proteotyping. Our research has revealed the involvement of the E4 gene in the evolution of human adenovirus, and has established accurate sequence information of the E4 gene, laying the groundwork for further research.

Effects of Light and Dark Conditions on the Transcriptome of Aging Cultures of Candidatus Puniceispirillum marinum IMCC1322: Ji Hyen Lee, Hyun-Myung Oh; J. Microbiol. 2024;62(4):297-314. Published online April 25, 2024; DOI: https://doi.org/10.1007/s12275-024-00125-0

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To elucidate the function of proteorhodopsin in Candidatus Puniceispirillum marinum strain IMCC1322, a cultivated representative of SAR116, we produced RNA-seq data under laboratory conditions. We examined the transcriptomes of six different cultures, including sets of expression changes under constant dark (DD), constant light (LL), and diel-cycled (LD; 14 h light: 10 h dark) conditions at the exponential and stationary/death phases. Prepared mRNA extracted from the six samples was analyzed on the Solexa Genome Analyzer with 36 cycles. Differentially expressed genes on the IMCC1322 genome were distinguished as four clusters by K-mean clustering and each CDS (n = 2546) was annotated based on the KEGG BRITE hierarchy. Cluster 0 (n = 1573) covered most constitutive genes including proteorhodopsin, retinoids, and glycolysis/TCA cycle. Cluster 1 genes (n = 754) were upregulated in stationary/death phase under constant dark conditions and included genes associated with bacterial defense, membrane transporters, nitrogen metabolism, and senescence signaling. Cluster 2 genes (n = 197) demonstrated upregulation in exponential phase cultures and included genes involved in genes for oxidative phosphorylation, translation factors, and transcription machinery. Cluster 3 (n = 22) contained light-stimulated upregulated genes expressed under stationary/phases. Stringent response genes belonged to cluster 2, but affected genes spanned various cellular processes such as amino acids, nucleotides, translation, transcription, glycolysis, fatty acids, and cell wall components. The coordinated expression of antagonistic stringent genes, including mazG, ppx/gppA, and spoT/relA may provide insight into the controlled cultural response observed between constant light and constant dark conditions in IMCC1322 cultures, regardless of cell numbers and biomass.

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Culture-supported ecophysiology of the SAR116 clade demonstrates metabolic and spatial niche partitioning
Jordan T Coelho, Lauren Teubner, Michael W Henson, V Celeste Lanclos, Conner Y Kojima, J Cameron Thrash
The ISME Journal.2025;[Epub] CrossRef
Effect of Light Regime on Candidatus Puniceispirillum marinum IMCC1322 in Nutrient-Replete Conditions
Hyun-Myung Oh, Ji Hyen Lee, Ahyoung Choi, Sung-Hyun Yang, Gyung-Hoon Shin, Sung Gyun Kang, Jang-Cheon Cho, Hak Jun Kim, Kae-Kyoung Kwon
Journal of Microbiology and Biotechnology.2024;[Epub] CrossRef

Review

Application of Microbiome‑Based Therapies in Chronic Respiratory Diseases: Se Hee Lee, Jang Ho Lee, Sei Won Lee; J. Microbiol. 2024;62(3):201-216. Published online April 18, 2024; DOI: https://doi.org/10.1007/s12275-024-00124-1

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The application of microbiome-based therapies in various areas of human disease has recently increased. In chronic respiratory disease, microbiome-based clinical applications are considered compelling options due to the limitations of current treatments. The lung microbiome is ecologically dynamic and afected by various conditions, and dysbiosis is associated with disease severity, exacerbation, and phenotype as well as with chronic respiratory disease endotype. However, it is not easy to directly modulate the lung microbiome. Additionally, studies have shown that chronic respiratory diseases can be improved by modulating gut microbiome and administrating metabolites. Although the composition, diversity, and abundance of the microbiome between the gut and lung are considerably diferent, modulation of the gut microbiome could improve lung dysbiosis. The gut microbiome infuences that of the lung via bacterial-derived components and metabolic degradation products, including short-chain fatty acids. This phenomenon might be associated with the cross-talk between the gut microbiome and lung, called gut-lung axis. There are multiple alternatives to modulate the gut microbiome, such as prebiotics, probiotics, and postbiotics ingestion and fecal material transplantation. Several studies have shown that high-fber diets, for example, present benefcial efects through the production of short-chain fatty acids. Additionally, genetically modifed probiotics to secrete some benefcial molecules might also be utilized to treat chronic respiratory diseases. Further studies on microbial modulation to regulate immunity and potentiate conventional pharmacotherapy will improve microbiome modulation techniques, which will develop as a new therapeutic area in chronic respiratory diseases.

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Role of the gut‑lung axis in bronchopulmonary dysplasia: Physiological basis, pathogenesis and immunological modulation (Review)
Yue Zhu, Rui-Dong Ding
Molecular Medicine Reports.2025; 32(6): 1. CrossRef
Postbiotics in Respiratory Health: Functional Components, Innovative Application, and Emerging Challenges
Jianqiang Lan, Shimin Wu, Hong Li, Junfang Wang, Min Li
The Journal of Nutrition.2025; 155(11): 3676. CrossRef
Association between live microbe intake and depression in COPD aged 40 years and older: evidence from NHANES 2005–2018
Wei Gao, Xin Ling, Yan Wang, Xiaoxia Zhao, Yushan Shi
Frontiers in Nutrition.2025;[Epub] CrossRef
Bacteria and Allergic Diseases
Svetlana V. Guryanova
International Journal of Molecular Sciences.2024; 25(19): 10298. CrossRef
The emerging roles of microbiome and short-chain fatty acids in the pathogenesis of bronchopulmonary dysplasia
Yuan Gao, Kaixuan Wang, Zupan Lin, Shujing Cai, Aohui Peng, Le He, Hui Qi, Zhigang Jin, Xubo Qian
Frontiers in Cellular and Infection Microbiology.2024;[Epub] CrossRef
Host-Associated Microbiome
Woo Jun Sul
Journal of Microbiology.2024; 62(3): 135. CrossRef

Journal Articles

CA‑CAS‑01‑A: A Permissive Cell Line for Isolation and Live Attenuated Vaccine Development Against African Swine Fever Virus: Seung-Chul Lee , Yongkwan Kim , Ji-Won Cha , Kiramage Chathuranga , Niranjan Dodantenna , Hyeok-Il Kwon , Min Ho Kim , Weonhwa Jheong , In-Joong Yoon , Joo Young Lee , Sung-Sik Yoo , Jong-Soo Lee; J. Microbiol. 2024;62(2):125-134. Published online March 13, 2024; DOI: https://doi.org/10.1007/s12275-024-00116-1

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African swine fever virus (ASFV) is the causative agent of the highly lethal African swine fever disease that affects domestic pigs and wild boars. In spite of the rapid spread of the virus worldwide, there is no licensed vaccine available. The lack of a suitable cell line for ASFV propagation hinders the development of a safe and effective vaccine. For ASFV propagation, primary swine macrophages and monocytes have been widely studied. However, obtaining these cells can be time-consuming and expensive, making them unsuitable for mass vaccine production. The goal of this study was to validate the suitability of novel CA-CAS-01-A (CAS-01) cells, which was identified as a highly permissive cell clone for ASFV replication in the MA-104 parental cell line for live attenuated vaccine development. Through a screening experiment, maximum ASFV replication was observed in the CAS-01 cell compared to other sub-clones of MA-104 with 14.89 and log10 7.5 ± 0.15 Ct value and TCID50/ ml value respectively. When CAS-01 cells are inoculated with ASFV, replication of ASFV was confirmed by Ct value for ASFV DNA, HAD50/ ml assay, TCID50/ ml assay, and cytopathic effects and hemadsoption were observed similar to those in primary porcine alveolar macrophages after 5th passage. Additionally, we demonstrated stable replication and adaptation of ASFV over the serial passage. These results suggest that CAS-01 cells will be a valuable and promising cell line for ASFV isolation, replication, and development of live attenuated vaccines.

Citations

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Establishment of a highly sensitive porcine alveolar macrophage cell line for African swine fever virus
Xiangwan Lu, Xiadan Gong, Yingshuo Sun, Lang Gong, Yan Zhang
In Vitro Cellular & Developmental Biology - Animal.2025; 61(4): 425. CrossRef
Genetic and Pathogenic Characteristic of High Pathogenic Korean NADC34‐Like Porcine Reproductive and Respiratory Syndrome Virus
Sehyeong Ham, Chanhee Chae, Nan-hua Chen
Transboundary and Emerging Diseases.2025;[Epub] CrossRef
Efficient and modular reverse genetics system for rapid generation of recombinant severe acute respiratory syndrome coronavirus 2
Sojung Bae, Jinjong Myoung
Journal of Microbiology.2025; 63(7): e2504015. CrossRef
Progress in the in vitro propagation of African swine fever virus and implications for vaccine development
Thanathom Chailangkarn, Theeradej Thaweerattanasinp, Asawin Wanitchang, Janya Saenboonrueng, Challika Kaewborisuth, Anan Jongkaewwattana
Animal Diseases.2025;[Epub] CrossRef
Analysis of novel African swine fever variants circulating in wild boars in South Korea isolated in 2021 by deep sequencing
Van Dam Lai, Yong-kwan Kim, Min-Ho Kim, Yeeun Moon, Hyeok-Il Kwon, Weon-hwa Jheong, Jong-Soo Lee, Sung-Sik Yoo, In Pil Mo
Infection, Genetics and Evolution.2025; 135: 105833. CrossRef
Domain-Specific Impacts of Spike Protein Mutations on Infectivity and Antibody Escape in SARS-CoV-2 Omicron BA.1
Tae-Hun Kim, Sojung Bae, Jinjong Myoung
Journal of Microbiology and Biotechnology.2025;[Epub] CrossRef
Current status of African swine fevervaccine research and thoughts
Jiarong Yu, Shengbin Gao, Jiao Xu, Yonggang Zhao, Linlin Fang, Xiaozhen Wang, Yingli Wang, Jingyue Bao, Zhiliang Wang
Journal of Integrative Agriculture.2025;[Epub] CrossRef
Development and characterization of high-efficiency cell-adapted live attenuated vaccine candidate against African swine fever
Min Ho Kim, Ashan Subasinghe, Yongkwan Kim, Hyeok-Il Kwon, Yehjin Cho, Kiramage Chathuranga, Ji-Won Cha, Ji-Yoon Moon, Ji-Hyeon Hong, Jin Kim, Seung-Chul Lee, Niranjan Dodantenna, Nuwan Gamage, W. A. Gayan Chathuranga, Yeonji Kim, In-Joong Yoon, Joo Young
Emerging Microbes & Infections.2024;[Epub] CrossRef

Development of a Novel Korean H9‑Specific rRT‑PCR Assay and Its Application for Avian Influenza Virus Surveillance in Korea: Mingeun Sagong , Yong-Myung Kang , Na Yeong Kim , Eun Bi Noh , Gyeong-Beom Heo , Se-Hee An , Youn-Jeong Lee , Young Ki Choi , Kwang-Nyeong Lee; J. Microbiol. 2023;61(10):929-936. Published online November 27, 2023; DOI: https://doi.org/10.1007/s12275-023-00088-8

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Since the 2000s, the Y439 lineage of H9N2 avian influenza virus (AIV) has been the predominant strain circulating in poultry in Korea; however, in 2020, the Y280 lineage emerged and spread rapidly nationwide, causing large economic losses. To prevent further spread and circulation of such viruses, rapid detection and diagnosis through active surveillance programs are crucial. Here, we developed a novel H9 rRT-PCR assay that can detect a broad range of H9Nx viruses in situations in which multiple lineages of H9 AIVs are co-circulating. We then evaluated its efficacy using a large number of clinical samples. The assay, named the Uni Kor-H9 assay, showed high sensitivity for Y280 lineage viruses, as well as for the Y439 lineage originating in Korean poultry and wild birds. In addition, the assay showed no cross-reactivity with other subtypes of AIV or other avian pathogens. Furthermore, the Uni Kor-H9 assay was more sensitive, and had higher detection rates, than reference H9 rRT-PCR methods when tested against a panel of domestically isolated H9 AIVs. In conclusion, the novel Uni Kor-H9 assay enables more rapid and efficient diagnosis than the “traditional” method of virus isolation followed by subtyping RT-PCR. Application of the new H9 rRT-PCR assay to AI active surveillance programs will help to control and manage Korean H9 AIVs more efficiently.

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Development of a multiplex and universal RT-PCR assay for hemagglutinin and neuraminidase subtyping of avian influenza virus
Se-Hee An, Gyeong-Beom Heo, Yong-Myung Kang, Youn-Jeong Lee, Kwang-Nyeong Lee
Journal of Veterinary Science.2025;[Epub] CrossRef
A Systematic Review of New, Enhanced Surveillance Systems and Methodologies for Zoonotic Influenza Viruses in Animals and Human–Animal Interface
Rebecca Badra, Wenqing Zhang, John S. L. Tam, Richard Webby, Sylvie Van Der Werf, Sergejs Nikisins, Ann Cullinane, Saad Gharaibeh, Richard Njouom, Malik Peiris, Ghazi Kayali, Jean‐Michel Heraud
Influenza and Other Respiratory Viruses.2025;[Epub] CrossRef
Development and evaluation of a multiplex real-time RT-PCR assay for simultaneous detection of H5, H7, and H9 subtype avian influenza viruses
Se-Hee An, Na-Yeong Kim, Gyeong-Beom Heo, Yong-Myung Kang, Youn-Jeong Lee, Kwang-Nyeong Lee
Journal of Virological Methods.2024; 327: 114942. CrossRef

Flavobacterium psychrotrophum sp. nov. and Flavobacterium panacagri sp. nov., Isolated from Freshwater and Soil: Yong-Seok Kim , Eun-Mi Hwang , Chang-Myeong Jeong , Chang-Jun Cha; J. Microbiol. 2023;61(10):891-901. Published online October 18, 2023; DOI: https://doi.org/10.1007/s12275-023-00081-1

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Two novel bacterial strains CJ74T and CJ75T belonging to the genus Flavobacterium were isolated from freshwater of Han River and ginseng soil, South Korea, respectively. Strain CJ74T was Gram-stain-negative, aerobic, rod-shaped, non-motile, and non-flagellated, and did not produce flexirubin-type pigments. Strain CJ75T was Gram-stain-negative, aerobic, rodshaped, motile by gliding, and non-flagellated, and produced flexirubin-type pigments. Both strains were shown to grow optimally at 30 °C in the absence of NaCl on R2A medium. Phylogenetic analysis based on 16S rRNA gene sequences showed that strains CJ74T and CJ75T belonged to the genus Flavobacterium and were most closely related to Flavobacterium niveum TAPW14T and Flavobacterium foetidum CJ42T with 96.17% and 97.29% 16S rRNA sequence similarities, respectively. Genomic analyses including the reconstruction of phylogenomic tree, average nucleotide identity, and digital DNA-DNA hybridization suggested that they were novel species of the genus Flavobacterium. Both strains contained menaquinone 6 (MK-6) as the primary respiratory quinone and phosphatidylethanolamine as a major polar lipid. The predominant fatty acids of both strains were iso-C15:0 and summed feature 3 ( C16:1 ω7c and/or C16: 1 ω6c). Based on the polyphasic taxonomic study, strains CJ74T and CJ75T represent novel species of the genus Flavobacterium, for which names Flavobacterium psychrotrophum sp. nov. and Flavobacterium panacagri sp. nov. are proposed, respectively. The type strains are CJ74T (=KACC 19819T =JCM 32889T) and CJ75T (=KACC 23149T =JCM 36132T).

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Discovery of two novel Flavobacterium species with potential for complex polysaccharide degradation
Xu-Dong Lian, Yong Guan, Yue Jiang, Dong-Heui Kwak, Mi-Kyung Lee, Zhun Li
Scientific Reports.2025;[Epub] CrossRef
Ammonia-oxidizing activity and microbial structure of ammonia-oxidizing bacteria, ammonia-oxidizing archaea and complete ammonia oxidizers in biofilm systems with different salinities
Haojie Qiu, Weihua Zhao, Yingying Qin, Yanyan Wang, Meng Bai, Shaoqing Su, Chao Wang, Zhisheng Zhao
Bioresource Technology.2025; 423: 132248. CrossRef
mKmer: an unbiased K-mer embedding of microbiomic single-microbe RNA sequencing data
Fangyu Mo, Qinghong Qian, Xiaolin Lu, Dihuai Zheng, Wenjie Cai, Jie Yao, Hongyu Chen, Yujie Huang, Xiang Zhang, Sanling Wu, Yifei Shen, Yinqi Bai, Yongcheng Wang, Weiqin Jiang, Longjiang Fan
Briefings in Bioinformatics.2025;[Epub] CrossRef
Congregibacter variabilis sp. nov. and Congregibacter brevis sp. nov. Within the OM60/NOR5 Clade, Isolated from Seawater, and Emended Description of the Genus Congregibacter
Hyeonsu Tak, Miri S. Park, Hyerim Cho, Yeonjung Lim, Jang-Cheon Cho
Journal of Microbiology.2024; 62(9): 739. CrossRef
Flavobacterium rivulicola sp. nov., Isolated from a Freshwater Stream
Sumin Kim, Miri S. Park, Ilnam Kang, Jang-Cheon Cho
Current Microbiology.2024;[Epub] CrossRef
Validation List no. 218. Valid publication of new names and new combinations effectively published outside the IJSEM
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Review

The Fatal Role of Enterohaemorrhagic Escherichia coli Shiga Toxin‑associated Extracellular Vesicles in Host Cells: Kyung-Soo Lee , Jun-Young Park , Yu-Jin Jeong , Moo-Seung Lee; J. Microbiol. 2023;61(8):715-727. Published online September 4, 2023; DOI: https://doi.org/10.1007/s12275-023-00066-0

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Enterohemorrhagic Escherichia coli (EHEC) is a specific subset of Shiga toxin-producing Escherichia coli (STEC) strains that are characterized by their ability to cause bloody diarrhea (hemorrhagic colitis) and potentially life-threatening, extraintestinal complications such as hemolytic uremic syndrome (HUS), which is associated with acute renal failure., contributing to severe clinical outcomes. The Shiga toxins (Stxs), produced by EHEC, are primary virulence factors. These potent cytotoxins are composed of one enzymatically active A subunit (StxA) and five receptor-binding B subunits (StxB). Although the toxins are primarily associated with cytotoxic effects, they also elicit other pathogenic consequences due to their induction of a number of biological processes, including apoptosis through ER-stress, pro-inflammatory responses, autophagy, and post-translational modification (PTM). Moreover, several studies have reported the association between Stxs and extracellular vesicles (EVs), including microvesicles and exosomes, demonstrating that Stx-containing EVs secreted by intoxicated macrophages are taken up by recipient cells, such as toxin-sensitive renal proximal tubular epithelial cells. This mechanism likely contributes to the spreading of Stxs within the host, and may exacerbate gastrointestinal illnesses and kidney dysfunction. In this review, we summarize recent findings relating to the host responses, in different types of cells in vitro and in animal models, mediated by Stxs-containing exosomes. Due to their unique properties, EVs have been explored as therapeutic agents, drug delivery systems, and diagnostic tools. Thus, potential therapeutic applications of EVs in EHEC Stxs-mediated pathogenesis are also briefly reviewed.

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Outer membrane vesicles in gram-negative bacteria and its correlation with pathogenesis
Fatemeh Sadat Abolhasani, Nasim Vaghefinanekaran, Aref Yarahmadi, Sousan Akrami, Solmaz Mirmahdavi, Mohammad Hasan Yousefi, Hamed Afkhami, Morvarid Shafiei
Frontiers in Immunology.2025;[Epub] CrossRef
Exosomes in Ocular Health: Recent Insights into Pathology, Diagnostic Applications and Therapeutic Functions
Noelia Blanco-Agudín, Suhui Ye, Sara González-Fernández, Ignacio Alcalde, Jesús Merayo-Lloves, Luis M. Quirós
Biomedicines.2025; 13(1): 233. CrossRef
Estimation of IL-8 and TNF-α Levels in Pediatric Diarrhea Patients Infected with Enterohemorrhagic E. coli O157:H7
Safaa A. AL-Isawi, Shaimaa Jassim Alsultany
Medical Journal of Babylon.2024; 21(3): 533. CrossRef
Structural basis to identify a target site in Shiga toxin for the inhibitor discovery against growth of Shiga toxin-producing E. coli
Anuja Prabhudesai, Samir Shaikh, Kayasth Zarna Ashwinbhai, Reeshu Gupta
Bulletin of the National Research Centre.2024;[Epub] CrossRef

Editorial

Editorial] Bacterial Regulatory Mechanisms for the Control of Cellular Processes: Simple Organisms’ Complex Regulation: Jin-Won Lee; J. Microbiol. 2023;61(3):273-276. Published online April 3, 2023; DOI: https://doi.org/10.1007/s12275-023-00036-6

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Bacteria employ a diverse array of cellular regulatory mechanisms to successfully adapt and thrive in ever-changing environments, including but not limited to temperature changes, fluctuations in nutrient availability, the presence or absence of electron acceptors such as oxygen, the availability of metal ions crucial for enzyme activity, and the existence of antibiotics. Bacteria can virtually modulate any step of gene expression from transcr!ptional initiation to posttranslational modification of a protein for the control of cellular processes. Furthermore, one gene regulator often controls another in a complex gene regulatory network. Thus, it is not easy to fully understand the intricacies of bacterial regulatory mechanisms in various environments. In this special issue, while acknowledging the challenge of covering all aspects of bacterial regulatory mechanisms across diverse environments, seven review articles are included to provide insight into the recent progress in understanding such mechanisms from different perspectives: positive regulatory mechanisms by secondary messenger (cAMP receptor protein), two-component signal transduction mechanisms (Rcs and Cpx), diverse regulatory mechanisms by a specific environmental factor in specific bacteria (oxygen availability in Mycobacterium and manganese ion availability in Salmonella), diverse regulatory mechanisms by a specific environmental factor (temperature and antibiotics), and regulatory mechanisms by antibiotics in cell wall synthesis. Bacteria, as ubiquitous organisms that can be found in almost every environment, carry out complex cellular processes that allow them to survive and thrive in a variety of different conditions despite their small size and relative simplicity. One of the key factors that allows bacteria to carry out these complex processes is their ability to regulate gene expression through various mechanisms. Gene expression is a fundamental biological process by which the genetic information encoded in a gene is transcribed into an RNA molecule and subsequently translated into a functional gene product, often a protein. Furthermore, the activity levels of proteins may further be altered by posttranslational modification. Regulation of gene expression refers to the control of the amount and timing of gene expression, and thus it can be divided into transcr!ptional, translational, and posttranslational levels.

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The PhoBR two-component system upregulates virulence in Aeromonas dhakensis C4–1
Wei Feng, Xuesong Li, Nuo Yang, Lixia Fan, Guiying Guo, Jun Xie, Xiuqing Cai, Yuqi Meng, Jifeng Zeng, Yu Han, Jiping Zheng
Aquaculture.2025; 595: 741665. CrossRef
Molecular mechanisms of cold stress response in cotton: Transcriptional reprogramming and genetic strategies for tolerance
Washu Dev, Fahmida Sultana, Hongge Li, Daowu Hu, Zhen Peng, Shoupu He, Haobo Zhang, Muhammad Waqas, Xiaoli Geng, Xiongming Du
Plant Science.2025; 352: 112390. CrossRef
Identificación de Proteínas Clave en la Captación de Hemo por Pseudomonas aeruginosa mediante Análisis In Silico: Nuevos Blancos Terapéuticos
Elena Marcia Gutiérrez Cárdenas, José de Jesús Olivares Trejo , Marco Antonio González López
Revista Bio Ciencias.2025;[Epub] CrossRef
A Methanolic Urea-Enhanced Protein Extraction Enabling the Largest Bacterial Phosphorylation Resource
Pei-Shan Wu, Ting-An Chen, Bo-Yu Chen, Yasushi Ishihama, Miao-Hsia Lin
Molecular & Cellular Proteomics.2025; 24(8): 101019. CrossRef
PhoPQ-mediated lipopolysaccharide modification governs intrinsic resistance to tetracycline and glycylcycline antibiotics in Escherichia coli
Byoung Jun Choi, Umji Choi, Dae-Beom Ryu, Chang-Ro Lee, Mehrad Hamidian, You-Hee Cho
mSystems.2024;[Epub] CrossRef
Navigating the signaling landscape of Ralstonia solanacearum: a study of bacterial two-component systems
Mohit Yadav, Janhavi Sathe, Valentina Teronpi, Aditya Kumar
World Journal of Microbiology and Biotechnology.2024;[Epub] CrossRef

Journal Article

Epidemiological Characteristics of Norovirus Outbreaks in Shenyang from 2017 to 2021: Ying Qi , Xinxin Dong , Xiaowei Cheng , Han Xu , Jin Wang , Bing Wang , Ye Chen , Baijun Sun , Linlin Zhang , Yan Yao; J. Microbiol. 2023;61(4):471-478. Published online March 27, 2023; DOI: https://doi.org/10.1007/s12275-023-00033-9

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Norovirus is one of the leading causes of acute gastroenteritis outbreaks worldwide. This study aimed to identify the epidemiological characteristics of norovirus outbreaks and to provide evidence for public health entities. Specimens and epidemiological survey data were collected to determine if there were differences in the attack rate of norovirus in terms of the year, season, transmission route, exposure setting, and region and to determine whether there were relationships between the reporting interval, the number of illnesses in a single outbreak and the duration of the outbreak. Norovirus outbreaks were reported throughout the year, with seasonal characteristics (i.e., high rates in spring and winter). Among all regions in Shenyang with the exception of Huanggu and Liaozhong, norovirus outbreaks had been reported, and the primary genotype was GII.2[P16]. Vomiting was the most common symptom. The main places of occurrence were childcare institutions and schools. The person-to-person route was the main transmission route. The median duration of norovirus was 3 days (IQR [interquartile range]: 2–6 days), the median reporting interval was 2 days (IQR: 1–4 days), the median number of illnesses in a single outbreak was 16 (IQR: 10–25); there was a positive correlation between these parameters. Norovirus surveillance and genotyping studies still need to be further strengthened to increase knowledge regarding the pathogens and their variant characteristics, to better characterize the patterns of norovirus outbreaks and to provide information for outbreak prevention. Norovirus outbreaks should be detected, reported and handled early. Public health entities and the government should develop corresponding measures for different seasons, transmission routes, exposure settings, and regions.

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Norovirus molecular trends in Harbin preschoolers Post-NPI easing
Yuan Tian, Xiqiao Du, Hong Gao, Mingyue Yuan, Yingchen Wang, Lei Shang, Yuhui Pan, Tuo Dong, Zhe Zhang
Journal of Infection and Public Health.2025; 18(5): 102762. CrossRef
Global burden of human noroviruses contamination in drinking water sources and drinking water: A systematic review and meta-analysis identifying GII.4 and GII.17 as dominant genotypes
Junshan Gao, Zilei Zhang, Yang Jiao, Yinghuan Xu, Yuanling Chen, Liang Xue
Science of The Total Environment.2025; 989: 179854. CrossRef
Epidemiology and genetic diversity of norovirus GII genogroups among pediatric patients in Beijing, China, during 2023–2024
Junhong Ai, Qiliang Li, Ke Xu, Yuxuan Li, Ying Liu, Luci Huang, Wenqi Song, Zhengde Xie
Virology Journal.2025;[Epub] CrossRef
Surge of acute gastroenteritis outbreaks due to rising norovirus GII.4 transmission in Seoul childcare centers and kindergartens in 2022 compared to 2019–2021
Euncheol Son, Young-Hoon Kim
Archives of Virology.2024;[Epub] CrossRef
Development and Evaluation of a Rapid GII Norovirus Detection Method Based on CRISPR-Cas12a
Xinyi Hu, Pei He, Tong Jiang, Jilu Shen
Polish Journal of Microbiology.2024; 73(1): 89. CrossRef
Improving knowledge, attitude and practice on norovirus infection diarrhea among staff of kindergartens and schools: a before-after study
Hongxin Lyu, Dongmei Liang, Riyan Luo, Yunlong Feng, Lei Liu, Sixia Yang, Fuling Cai, Zhen Zhang, Huawei Xiong
BMC Public Health.2024;[Epub] CrossRef
Epidemiological and Molecular Genetic Analysis of Outbreaks of Acute Intestinal Infections in the Khabarovsk Krai in 2022
Elena Yu. Sapega, Liudmila V. Butakova, Olga E. Trotsenko, Tatyana A. Zaitseva, Tatyana N. Karavyanskaya
ЗДОРОВЬЕ НАСЕЛЕНИЯ И СРЕДА ОБИТАНИЯ - ЗНиСО / PUBLIC HEALTH AND LIFE ENVIRONMENT.2023; : 74. CrossRef
Dual-responsive amplification strategy for ultrasensitive detection of norovirus in food samples: Combining magnetic relaxation switching and fluorescence assay
Tao Wang, Sha Liu, Zixuan Zhou, Weiya Wang, Shuyue Ren, Baolin Liu, Zhixian Gao
Sensors and Actuators B: Chemical.2023; 396: 134573. CrossRef

Review

The “Cins” of Our Fathers: Rejuvenated Interest in Colicins to Combat Drug Resistance: Sumudu Upatissa , Robert J. Mitchell; J. Microbiol. 2023;61(2):145-158. Published online February 8, 2023; DOI: https://doi.org/10.1007/s12275-023-00023-x

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With the growing threat of antibiotic resistance, researchers around the globe are seeking alternatives to stem bacterial pathogenesis. One such alternative is bacteriocins, proteins produced by bacterial species to inhibit the growth and viability of related bacterial species. With their diverse mechanisms, which include pore formation and nuclease activities, and narrow spectrum of activities, which limit their impact to only certain bacterial species, unlike many chemical antibiotics, bacteriocins offer intriguing possibilities to selectively control individual bacterial populations. Within this review, therefore, we highlight current research exploring the application of colicins and microcins, a subset of bacteriocins, with an emphasis on their activities against drug-resistant pathogens, both in in vitro and in vivo settings.

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Isolation, Genomics-Based and Biochemical Characterization of Bacteriocinogenic Bacteria and Their Bacteriocins, Sourced from the Gastrointestinal Tract of Meat-Producing Pigs
Ester Sevillano, Irene Lafuente, Nuria Peña, Luis M. Cintas, Estefanía Muñoz-Atienza, Pablo E. Hernández, Juan Borrero
International Journal of Molecular Sciences.2024; 25(22): 12210. CrossRef
Intelligent Biological Networks: Improving Anti-Microbial Resistance Resilience through Nutritional Interventions to Understand Protozoal Gut Infections
Avinash V. Karpe, David J. Beale, Cuong D. Tran
Microorganisms.2023; 11(7): 1800. CrossRef
Pairing Colicins B and E5 with Bdellovibrio bacteriovorus To Eradicate Carbapenem- and Colistin-Resistant Strains of Escherichia coli
Sumudu Upatissa, Wonsik Mun, Robert J. Mitchell, Minsu Kim
Microbiology Spectrum.2023;[Epub] CrossRef
Bacteriocin-Producing Escherichia coli Q5 and C41 with Potential Probiotic Properties: In Silico, In Vitro, and In Vivo Studies
Veronika S. Mihailovskaya, Dmitry A. Sutormin, Marina O. Karipova, Anna B. Trofimova, Victor A. Mamontov, Konstantin Severinov, Marina V. Kuznetsova
International Journal of Molecular Sciences.2023; 24(16): 12636. CrossRef

Journal Articles

Recombinant Protein Mimicking the Antigenic Structure of the Viral Surface Envelope Protein Reinforces Induction of an Antigen‑Specific and Virus‑Neutralizing Immune Response Against Dengue Virus: Ju Kim , Tae Young Lim , Jisang Park , Yong&#; J. Microbiol. 2023;61(1):131-143. Published online February 1, 2023; DOI: https://doi.org/10.1007/s12275-023-00021-z

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Dengue virus (DENV), belonging to the family Flaviviridae, is the causative agent of dengue and comprises four serotypes. A second heterologous DENV infection is a critical risk factor for severe dengue, and no effective vaccine is available to prevent infection by all four DENV serotypes. Recombinant DENV vaccines are primarily based on the envelope proteins, prM and E. The E protein and its envelope domain III (EDIII) have been investigated as candidate antigens (Ags) for recombinant subunit vaccines. However, most EDIII-based Ags are monomers that do not display the cognate antigenic structure of E protein, which is essential for induction of virus-neutralizing immunity. Here, we developed recombinant DENV-2 envelope domain (r2ED) protein as an Ag that mimics the quaternary structure of E protein on the DENV surface. We confirmed that r2ED retained the conformational epitope displayed at the E-dimer interface, which reportedly exhibits broad virus-neutralizing capacity, without displaying the fusion loop epitope that causes antibody (Ab)-dependent enhancement. Furthermore, compared with EDIII alone, r2ED elicited stronger Ag-specific and cross-reactive neutralizing Ab and T cell-mediated immune responses in mice. This Ag-specific immunity was maintained at an elevated level 6 months after the last immunization, suggesting sustained Ag-specific immune memory. Taken together, these observations suggest that r2ED could be used to develop an improved subunit vaccine capable of inducing a broadly cross-reactive and long-lasting immune response against DENV infection.

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Antiviral effects of heme oxygenase-1 against canine coronavirus and canine influenza virus in vitro
Jae-Hyeong Kim, Dong-Hwi Kim, Kyu-Beom Lim, Joong-Bok Lee, Seung-Yong Park, Chang-Seon Song, Sang-Won Lee, Dong-Hun Lee, Do-Geun Kim, Hun-Young Yoon, In-Soo Choi
Journal of Microbiology.2025; 63(5): e2501029. CrossRef
A retrospective computational validation of a clinically evaluated recombinant envelope protein tetravalent dengue vaccine
Jesús Reiné, Rosaria Tinnirello, Alberto Cagigi, Chiuan Yee Leow, Chiuan Herng Leow, Gioacchin Iannolo, Bruno Douradinha
International Journal of Biological Macromolecules.2025; 329: 147688. CrossRef
Peptides of a Feather: How Computation Is Taking Peptide Therapeutics under Its Wing
Thomas David Daniel Kazmirchuk, Calvin Bradbury-Jost, Taylor Ann Withey, Tadesse Gessese, Taha Azad, Bahram Samanfar, Frank Dehne, Ashkan Golshani
Genes.2023; 14(6): 1194. CrossRef

Construction of high-density transposon mutant library of Staphylococcus aureus using bacteriophage ϕ11: Wonsik Lee; J. Microbiol. 2022;60(12):1123-1129. Published online November 24, 2022; DOI: https://doi.org/10.1007/s12275-022-2476-2

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Transposon mutant libraries are an important resource to study bacterial metabolism and pathogenesis. The fitness analysis of mutants in the libraries under various growth conditions provides important clues to study the physiology and biogenesis of structural components of a bacterial cell. A transposon library in conjunction with next-generation sequencing techniques, collectively named transposon sequencing (Tnseq), enables high-throughput genome profiling and synthetic lethality analysis. Tn-seq has also been used to identify essential genes and to study the mode of action of antibacterials. To construct a high-density transposon mutant library, an efficient delivery system for transposition in a model bacterium is essential. Here, I describe a detailed protocol for generating a high-density phage-based transposon mutant library in a Staphylococcus aureus strain, and this protocol is readily applicable to other S. aureus strains including USA300 and MW2.

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Optimizing phage-based mutant recovery and minimizing heat effect in the construction of transposon libraries in Staphylococcus aureus
Sally W. Yousief, Nader Abdelmalek, Bianca Paglietti
Scientific Reports.2024;[Epub] CrossRef

Microbial metabolic responses and CO2 emissions differentiated by soil water content variation in subarctic tundra soils: Dockyu Kim , Namyi Chae , Mincheol Kim , Sungjin Nam , Tai Kyoung Kim , Ki-Tea Park , Bang Yong Lee , Eungbin Kim , Hyoungseok Lee; J. Microbiol. 2022;60(12):1130-1138. Published online November 24, 2022; DOI: https://doi.org/10.1007/s12275-022-2378-3

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Recent rapid air temperature increases across the northernlatitude tundra have prolonged permafrost thawing and snow melting periods, resulting in increased soil temperature (Ts) and volumetric soil water content (SWC). Under prolonged soil warming at 8°C, Alaskan tundra soils were incubated in a microcosm system and examined for the SWC differential influence on the microbial decomposition activity of large molecular weight (MW) humic substances (HS). When one microcosm soil (AKC1-1) was incubated at a constant SWC of 41% for 90 days (T = 90) and then SWC was gradually decreased from 41% to 29% for another T = 90, the initial HS was partly depolymerized. In contrast, in AKC1-2 incubated at a gradually decreasing SWC from the initial 32% to 10% for T = 90 and then increasing to 27% for another T = 90, HS depolymerization was undetected. Overall, the microbial communities in AKC1-1 could maintain metabolic activity at sufficient and constant SWC during the initial T = 90 incubation. In contrast, AKC1-2 microbes may have been damaged by drought stress during the drying SWC regimen, possibly resulting in the loss of HS decomposition activity, which did not recover even after re-wetting to an optimal SWC range (20–40%). After T = 90, the CO2 production in both treatments was attributed to the increased decomposition of small-MW organic compounds (including aerobic HS-degradative products) within an optimal SWC range. We expect this study to provide new insights into the early effects of warming- and topography-induced SWC variations on the microbial contribution to CO2 emissions via HS decomposition in northern-latitude tundra soil.

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Unidirectional freeze–thaw redistributes water and amplifies soil microbial heterogeneity in a mecrocosm experiment
Huimin Liu, Yaxian Hu, Yuan Song, Xianwen Li, Xiaorong Wei
Geoderma.2025; 453: 117126. CrossRef
Analysis of CO2 Emission from Urban Soils of the Kola Peninsula (European Arctic)
M. V. Korneykova, V. I. Vasenev, N. V. Saltan, M. V. Slukovskaya, A. S. Soshina, M. S. Zavodskikh, Yu. L. Sotnikova, A. V. Dolgikh
Eurasian Soil Science.2023; 56(11): 1653. CrossRef
Analysis of CO₂ Emission by Urban Soils under the Conditions of the Kola North
M. V. Korneykova, V. I. Vasenev, N. V. Saltan, M. V. Slukovskaya, A. S. Soshina, M. S. Zavodskikh, Y. L. Sotnikova, A. V. Dolgikh
Почвоведение.2023; (11): 1385. CrossRef

Correlation between fat accumulation and fecal microbiota in crossbred pigs: Xin Li , Mengyu Li , Jinyi Han , Chuang Liu , Xuelei Han , Kejun Wang , Ruimin Qiao , Xiu-Ling Li , Xin-Jian Li; J. Microbiol. 2022;60(11):1077-1085. Published online September 9, 2022; DOI: https://doi.org/10.1007/s12275-022-2218-5

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Backfat thickness (BF) is an important indicator of fat deposition capacity and lean meat rate in pigs and is very important in porcine genetics and breeding. Intestinal microbiota plays a key role in nutrient digestion and utilization with a profound impact on fat deposition of livestock animals. To investigate the relationship between the pig gut microbiome and BF, 20 low-BF (L-BF) and 20 high-BF (H-BF) pigs were selected as two groups from Yunong Black pigs in the present study. Fecal samples from pigs were analyzed for microbial diversity, composition, and predicted functionality using 16S rRNA gene sequencing. The results showed that there were significant differences in microbial β diversity between the two groups. LEfSe analysis revealed a number of bacterial features being differentially enriched in either L-BF or H-BF pigs. Spearman correlation analysis identified the abundance of Oscillospira, Peptococcus, and Bulleidia were significantly positive correlations with BF (P < 0.05), while Sutterella and Bifidobacterium were significantly negatively correlated with BF (P < 0.05). Importantly, the bacteria significantly positively correlated with BF mainly belong to Clostridium, which can ferment host-indigestible plant polysaccharides into shortchain fatty acid (SCFA) and promote fat synthesis and deposition. Predictive functional analysis indicated that the pathway abundance of cell motility and glycan biosynthesis were significantly widespread in the microbiota of the H-BF group. The results of this study will be useful for the development of microbial biomarkers for predicting and improving porcine BF, as well as for the investigation of targets for dietary strategies.

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Zhouyang Gao, Jiangxia Zheng, Guiyun Xu
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Enzyme activity of Aspergillus section Nigri strains isolated from the Korean fermentation starter, nuruk: Eunji Jeong , Jeong-Ah Seo; J. Microbiol. 2022;60(10):998-1006. Published online August 19, 2022; DOI: https://doi.org/10.1007/s12275-022-2071-6

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Aspergillus section Nigri is a fungus used industrially because of its ability to produce enzymes such as cellulolytic, amylolytic and proteolytic enzymes. In this study, we obtained twentyeight strains of Aspergillus section Nigri from the traditional Korean fermentation starter, nuruk, which is known as a mixed culture of enzymatic filamentous fungi and yeasts. All strains were identified as Aspergillus section Nigri through combined phylogenetic analysis using partial β-tubulin and calmodulin gene sequences. The cellulase, amylase and protease activities of Korean strains were measured and compared with ten reference strains of Aspergillus niger. Most Korean strains showed higher cellulolytic activity than reference strains, and Aspergillus neoniger KCN5 showed the highest β-glucosidase activity. Two-thirds of the Korean strains showed similar levels of α- and glucoamylase activity as the reference strains. The protease activity of Aspergillus section Nigri strains was the highest at pH 3.0, and A. niger KSJ2 showed the highest acidic protease activity. By comparing ten reference strains and twenty-eight Korean strains, our results suggested useful Aspergillus section Nigri strains from nuruk with high enzyme activity, such as KCN5 and KSJ2, and their potential for industrial applications as enzyme producers.

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Effect of Aspergillus niger Fermentation on the Metabolites in Corn Stalks
Zhen Fan, Tianming Chen, Guolin Cai, Xiaoyu Huang, Suchuan Zhong, Xiaoming Li, Enping Zhang
Fermentation.2023; 9(1): 50. CrossRef

The novel antifungal agent AB-22 displays in vitro activity against hyphal growth and biofilm formation in Candida albicans and potency for treating systemic candidiasis: Kyung-Tae Lee , Dong-Gi Lee , Ji Won Choi , Jong-Hyun Park , Ki Duk Park , Jong-Seung Lee , Yong-Sun Bahn; J. Microbiol. 2022;60(4):438-443. Published online March 14, 2022; DOI: https://doi.org/10.1007/s12275-022-2016-0

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Abstract PDF

Systemic candidiasis, which is mainly caused by Candida albicans, is a serious acute fungal infection in the clinical setting. In a previous study, we reported that compound 22h (designated as AB-22 in this study), a vinyl sulfate compound, is a fast-acting fungicidal agent against a broad spectrum of fungal pathogens. In this study, we aimed to further analyze the in vitro and in vivo efficacy of AB-22 against filamentation, biofilm formation, and virulence of C. albicans. Under in vitro hyphal growth-inducing condition, AB-22 effectively inhibited germ tube formation and hyphal growth, which are required for the initiation of biofilm formation. Indeed, AB-22 significantly suppressed C. albicans biofilm formation in a dose-dependent manner. Moreover, AB-22 treatment inhibited the normal induction of ALS3, HWP1, and ECE1, which are all required for hyphal transition in C. albicans. Furthermore, AB-22 treatment increased the survival of mice systemically infected with C. albicans. In conclusion, in addition to its fungicidal activity, AB-22 inhibits filamentation and biofilm formation in C. albicans, which could collectively contribute to its potent in vivo efficacy against systemic candidiasis.

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Preparation and analysis of quinoa active protein (QAP) and its mechanism of inhibiting Candida albicans from a transcriptome perspective
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Review

Current status and perspectives on vaccine development against dengue virus infection: Jisang Park , Ju Kim , Yong-Suk Jang; J. Microbiol. 2022;60(3):247-254. Published online February 14, 2022; DOI: https://doi.org/10.1007/s12275-022-1625-y

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Abstract PDF

Dengue virus (DENV) consists of four serotypes in the family Flaviviridae and is a causative agent of dengue fever, dengue hemorrhagic fever, and dengue shock syndrome. DENV is transmitted by mosquitoes, Aedes aegypti and A. albopictus, and is mainly observed in areas where vector mosquitoes live. The number of dengue cases reported by the World Health Organization increased more than 8-fold over the last two decades from 505,430 in 2000 to over 2.4 million in 2010 to 5.2 million in 2019. Although vaccine is the most effective
method
against DENV, only one commercialized vaccine exists, and it cannot be administered to children under 9 years of age. Currently, many researchers are working to resolve the various problems hindering the development of effective dengue vaccines; understanding of the viral antigen configuration would provide insight into the development of effective vaccines against DENV infection. In this review, the current status and perspectives on effective vaccine development for DENV are examined. In addition, a plausible direction for effective vaccine development against DENV is suggested.

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Journal Articles

Gold nanoparticle-DNA aptamer-assisted delivery of antimicrobial peptide effectively inhibits Acinetobacter baumannii infection in mice: Jaeyeong Park , Eunkyoung Shin , Ji-Hyun Yeom , Younkyung Choi , Minju Joo , Minho Lee , Je Hyeong Kim , Jeehyeon Bae , Kangseok Lee; J. Microbiol. 2022;60(1):128-136. Published online December 29, 2021; DOI: https://doi.org/10.1007/s12275-022-1620-3

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Abstract PDF

Acinetobacter baumannii causes multidrug resistance, leading to fatal infections in humans. In this study, we showed that Lys AB2 P3-His–a hexahistidine-tagged form of an antimicrobial peptide (AMP) loaded onto DNA aptamer-functionalized gold nanoparticles (AuNP-Apt)–can effectively inhibit A. baumannii infection in mice. When A. baumannii-infected mice were intraperitoneally injected with AuNP-Apt loaded with Lys AB2 P3-His, a marked reduction in A. baumannii colonization was observed in the mouse organs, leading to prominently increased survival time and rate of the mice compared to those of the control mice treated with AuNP-Apt or Lys AB2 P3-His only. This study shows that AMPs loaded onto AuNP-Apt could be an effective therapeutic tool against infections caused by multidrug-resistant pathogenic bacteria in humans.

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Advances in Antimicrobial Peptides: Mechanisms, Design Innovations, and Biomedical Potential
He Zhang, Jiaxun Lv, Zhili Ma, Junfeng Ma, Jing Chen
Molecules.2025; 30(7): 1529. CrossRef
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Atul Kumar Tiwari, Aishwarya Nikhil, Avinash Chaurasia, Prem C. Pandey, Roger J. Narayan, Munesh Kumar Gupta
Journal of Biomaterials Applications.2025; 40(1): 145. CrossRef
Overcoming delivery challenges of antimicrobial peptides for clinical translation: From nanocarriers to molecular modifications
Nan Gao, Jiaqi Sun, Xiang Li, Yuting Yao, Yujie Hu, Jiani Zhao, Anshan Shan, Jiajun Wang
Drug Resistance Updates.2025; 83: 101289. CrossRef
Beyond the glitter: gold nanoparticles as powerful weapons against multi-drug resistant pathogens
Hazim O. Khalifa, Hind Alkhoori
Frontiers in Molecular Biosciences.2025;[Epub] CrossRef
Aptamer-Functionalized Magnetic Nanoparticles for Rapid Isolation of Environmental Escherichia coli
Zulema Herazo-Romero, Wendy Yulieth Royero-Bermeo, Miguel Octavio Pérez-Navarro, Miryan Margot Sánchez-Jiménez, Juan David Ospina-Villa
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Challenges and Emerging Molecular Approaches in Combating Antimicrobial Resistance
Gene Philip Levee Ynion, Christian Jay Rosal, Arvin Zulueta, Angelo Ordanel, Christopher Marlowe Caipang
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Fatemeh Karimzadeh, Elahe Soltani Fard, Akram Nadi, Rahim Malekzadeh, Fatemeh Elahian, Seyed Abbas Mirzaei
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Md Minarul Islam, Da Eun Jung, Woo Shik Shin, Man Hwan Oh
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Maryam Pourhajibagher, Abbas Bahador
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Activity of Lactobacillus crispatus isolated from vaginal microbiota against Mycobacterium tuberculosis: Youngkyoung Lee , Hoonhee Seo , Sukyung Kim Abdur Rahim , Youjin Yoon , Jehee Jung , Saebim Lee , Chang Beom Ryu , Ho-Yeon Song; J. Microbiol. 2021;59(11):1019-1030. Published online November 1, 2021; DOI: https://doi.org/10.1007/s12275-021-1332-0

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Abstract PDF

Tuberculosis, an infectious disease, is caused by Mycobacterium tuberculosis. It remains a significant public health issue around the globe, causing about 1.8 million deaths every year. Drug-resistant M. tuberculosis, including multi-drug-resistant (MDR), extremely-drug-resistant (XDR), and totally drugresistant (TDR) M. tuberculosis, continues to be a threat to public health. In the case of antibiotic-resistant tuberculosis, the treatment effect of conventional antibiotics is low. Side effects caused by high doses over a long period are causing severe problems. To overcome these problems, there is an urgent need to develop a new anti-tuberculosis drug that is different from the existing compound-based antibiotics. Probiotics are defined as live microorganisms conferring health benefits. They can be potential therapeutic agents in this context as the effectiveness of probiotics against different infectious diseases has been well established. Here, we report that Lactobacillus crispatus PMC201 shows a promising effect on tuberculosis isolated from vaginal fluids of healthy Korean women. Lactobacillus crispatus PMC201 reduced M. tuberculosis H37Rv under co-culture conditions in broth and reduced M. tuberculosis H37Rv and XDR M. tuberculosis in macrophages. Lactobacillus crispatus PMC201 was not toxic to a guinea pig model and did not induce dysbiosis in a human intestinal microbial ecosystem simulator. Taken together, these
results
indicate that L. crispatus PMC201 can be a promising alternative drug candidate in the current tuberculosis drug regime. Further study is warranted to assess the in vivo efficacy and confirm the mode of action of L. crispatus PMC201.

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Gut Microbes.2025;[Epub] CrossRef
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Medical Microbiology and Immunology.2025;[Epub] CrossRef
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Medical Microbiology and Immunology.2025;[Epub] CrossRef
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Polish Journal of Microbiology.2022; 71(4): 553. CrossRef

Characterization and bioefficacy of green nanosilver particles derived from fungicide-tolerant Tricho-fusant for efficient biocontrol of stem rot (Sclerotium rolfsii Sacc.) in groundnut (Arachis hypogaea L.): Darshna G. Hirpara , Harsukh P. Gajera , Disha D. Savaliya , Rushita V. Bhadani; J. Microbiol. 2021;59(11):1031-1043. Published online October 6, 2021; DOI: https://doi.org/10.1007/s12275-021-1344-9

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An efficient and eco-friendly bioefficacy of potent Trichofusant (Fu21) and its green nanosilver formulation against stem rot (Sclerotium rolfsii) in groundnut was established. Fu21 demonstrated higher in-vitro growth inhibition of pathogen with better fungicide tolerance than the parental strains. The green nanosilver particles were synthesized from the extracellular metabolites of Fu21 and characterized for shape (spherical, 59.34 nm in scanning electron microscope), purity (3.00 KeV, energy dispersive X-ray analysis), size (54.3 nm in particle size analyzer), and stability (53.7 mv, zeta). The field efficacy study exhibited that the seedling emergence was high in seeds treated with green nanosilver (minimum inhibitory concentration-[MIC] 20 μg Ag/ml), and a low disease severity index of stem rot during the crop growth was followed by the live antagonist (Fu21) in addition to seed treatment with a fungicide mix under pathogen infestation. The seed quality analysis of harvested pods revealed a high oil content with balanced fatty acid composition (3.10 oleic/linoleic acid ratio) in green nanosilver treatment under pathogen infestation. The residual analysis suggested that green nanosilver applied at the MIC level as seed treatment yielded similar effects as the control for silver residue in the harvested groundnut seeds. The green nanosilver at MIC has a high pod-yield under S. rolfsii infestation, demonstrating green chemistry and sustainability of the nanoproduct.

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Comparative impact of seed priming with zinc oxide nanoparticles and zinc sulphate on biocompatibility, zinc uptake, germination, seedling vitality, and antioxidant modulation in groundnut
M. N. Ashwini, H. P. Gajera, Darshna G. Hirpara, Disha D. Savaliya, U. K. Kandoliya
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Biotechnological trends and optimization of Arachis hypogaea residues valorization: A bibliometric analysis and comprehensive review
Oyetola Ogunkunle, Micheal Olusoji Olusanya
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Intracellular metabolomics and microRNAomics unveil new insight into the regulatory network for potential biocontrol mechanism of stress‐tolerant Tricho‐fusants interacting with phytopathogen Sclerotium rolfsii Sacc
Darshna G. Hirpara, Harsukh P. Gajera
Journal of Cellular Physiology.2023; 238(6): 1288. CrossRef
Antifungal Properties of Nanosilver Clay Composites Against Fungal Pathogens of Agaricus bisporus
Tebogo Levy Ramakutoane, Magaretha Petronella Roux‐van der Merwe, Jacqueline Badenhorst, Sreejarani Kesavan Pillai, Suprakas Sinha Ray
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Exploring conserved and novel MicroRNA-like small RNAs from stress tolerant Trichoderma fusants and parental strains during interaction with fungal phytopathogen Sclerotium rolfsii Sacc.
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H. P. Gajera, Darshna G. Hirpara, Disha D. Savaliya, M. V. Parakhia
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Salicylic acid-functionalised chitosan nanoparticles restore impaired sucrose metabolism in the developing anther of cotton (Gossypium hirsutum) under heat stress
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Genetic diversity and population structure of the amylolytic yeast Saccharomycopsis fibuligera associated with Baijiu fermentation in China: Ju-Wei Wang , Pei-Jie Han , Da-Yong Han , Sen Zhou , Kuan Li , Peng-Yu He , Pan Zhen , Hui-Xin Yu , Zhen-Rong Liang , Xue-Wei Wang , Feng-Yan Bai; J. Microbiol. 2021;59(8):753-762. Published online July 5, 2021; DOI: https://doi.org/10.1007/s12275-021-1115-7

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The amylolytic yeast Saccharomycopsis fibuligera is a predominant species in starters and the early fermentation stage of Chinese liquor (Baijiu). However, the genetic diversity of the species remains largely unknown. Here we sequenced the genomes of 97 S. fibuligera strains from different Chinese Baijiu companies. The genetic diversity and population structure of the strains were analyzed based on 1,133 orthologous genes and the whole genome single nucleotide polymorphisms (SNPs). Four main lineages were recognized. One lineage contains 60 Chinese strains which are exclusively homozygous with relatively small genome sizes (18.55–18.72 Mb) and low sequence diversity. The strains clustered in the other three lineages are heterozygous with larger genomes (21.85–23.72 Mb) and higher sequence diversity. The genomes of the homozygous strains showed nearly 100% coverage with the genome of the reference strain KPH12 and the sub-genome A of the hybrid strain KJJ81 at the above 98% sequence identity level. The genomes of the heterozygous strains showed nearly 80% coverage with both the sub-genome A and the whole genome of KJJ81, suggesting that the Chinese heterozygous strains are also hybrids with nearly 20% genomes from an unidentified source. Eighty-three genes were found to show significant copy number variation between different lineages. However, remarkable lineage specific variations in glucoamylase and α-amylase activities and growth profiles in different carbon sources and under different environmental conditions were not observed, though strains exhibiting relatively high glucoamylase activity were mainly found from the homozygous lineage.

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International Journal of Food Microbiology.2026; 446: 111545. CrossRef
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Food Research International.2026; 223: 117916. CrossRef
Saccharomycopsis yichangensis sp. nov., a Novel Predacious Yeast Species Isolated From Soil
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International Journal of Biological Macromolecules.2025; 318: 145315. CrossRef
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Qi Yu, Feiyan Mou, Junwen Xiao, Cheng Zhan, Liang Li, Xu Chang, Xiaoyuan Dong, Maobin Chen, Xinrui Wang, Mei Chen, Shangling Fang
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Comparative study of the geographical spread of genogroup II porcine norovirus and human norovirus: Eung Seo Koo , Yong Seok Jeong; J. Microbiol. 2021;59(7):644-650. Published online July 1, 2021; DOI: https://doi.org/10.1007/s12275-021-1218-1

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Livestock pigs and porcine norovirus could be candidate tools for future studies on the geographic isolation of norovirus. In this study, we provide the first evidence for geographic isolation of the host as a determinant of the distribution of subgenotypes of the porcine norovirus genogroup II (GII) genotype 11. Environmental water samples were collected from peri-urban streams and estuaries in South Korea between 2014 and 2020. In total, 488 GII region C sequences of norovirus open reading frame 2 were isolated. A total of 14 genotypes were detected, two of which (GII.11 and GII.18) corresponded to porcine norovirus. Five human norovirus genotypes (GII.2, GII.3, GII.4, GII.6, and GII.17) and one porcine norovirus genotype (GII.11) comprised the subgenotypes. Integrated analysis of seasonal and geographical factors revealed that the possibility of the co-emergence of different GII.11 subgenotypes in the same province was lower than that of human norovirus subgenotypes in the same province. Additional algorithms designed to eliminate potential biases further supported the estimated restricted geographical spread of the GII.11 subgenotypes. Fecal contamination source tracking revealed low detection rates of porcine norovirus in the absence of upstream pig farms. These results suggest that a one-sided viral transmission route, mainly dependent on indirect contact owing to the limited chance of direct contact between geographically separated livestock pig populations, may be responsible for the restricted geographical spread of the GII.11 subgenotypes.

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Swine Norovirus: Past, Present, and Future
Lara Cavicchio, Andrea Laconi, Alessandra Piccirillo, Maria Serena Beato
Viruses.2022; 14(3): 537. CrossRef

Isolation of a novel strain, Sphingorhabdus sp. YGSMI21 and characterization of its enantioselective epoxide hydrolase activity: Jung-Hee Woo , Hae-Seon Kim , Nyun-Ho Park , Ho Young Suk; J. Microbiol. 2021;59(7):675-680. Published online June 1, 2021; DOI: https://doi.org/10.1007/s12275-021-1023-x

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Sphingorhabdus sp. YGSMI21, a novel microbial strain with an enantioselective epoxide hydrolase activity, was isolated from tidal samples contaminated by accidental oil spills subjected to enriched culture with polycyclic aromatic hydrocarbon. This strain was able to optically decompose (R)-styrene oxide (SO) and showed 100% optical purity. In addition, it showed a good enantioselectivity for the derivatives of (S)- SO, (S)-2-chlorostyrene oxide (CSO), (S)-3-CSO and (S)-4- CSO. For (S)-2-CSO, (S)-3-CSO and (S)-4-CSO, 99.9%ee was obtained with the yield of 26.2%, 24.8%, and 11.0%, respectively, when using 10 mg cells of Sphingorhabdus sp. YGSMI21 at pH 8.0 with 4 mM racemic substrates at pH 8.0 and 25°C. The values obtained in this study for (S)-2-CSO, particularly the yield of 26.2%, is noteworthy, considering that obtaining an enantiomerically pure form is difficult. Taken together, Sphingorhabdus sp. YGSMI21 can be regarded as a wholecell biocatalyst in the production of various (S)-CSO with the chlorine group at a different position.

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Epoxide Hydrolases: Multipotential Biocatalysts
Marek Bučko, Katarína Kaniaková, Helena Hronská, Peter Gemeiner, Michal Rosenberg
International Journal of Molecular Sciences.2023; 24(8): 7334. CrossRef
Effects of submerged macrophytes (Elodea nuttallii) on water quality and microbial communities of largemouth bass (Micropterus salmoides) ponds
Zhijuan Nie, Zhaowei Zheng, Haojun Zhu, Yi Sun, Jun Gao, Jiancao Gao, Pao Xu, Gangchuan Xu
Frontiers in Microbiology.2023;[Epub] CrossRef
Description of Polaribacter batillariae sp. nov., Polaribacter cellanae sp. nov., and Polaribacter pectinis sp. nov., novel bacteria isolated from the gut of three types of South Korean shellfish
Su-Won Jeong, Jeong Eun Han, June-Young Lee, Ji-Ho Yoo, Do-Yeon Kim, In Chul Jeong, Jee-Won Choi, Yun-Seok Jeong, Jae-Yun Lee, So-Yeon Lee, Euon Jung Tak, Hojun Sung, Hyun Sik Kim, Pil Soo Kim, Dong-Wook Hyun, Jin-Woo Bae
Journal of Microbiology.2022; 60(6): 576. CrossRef

Effect of biostimulation and bioaugmentation on hydrocarbon degradation and detoxification of diesel-contaminated soil: a microcosm study: Patricia Giovanella , Lídia de Azevedo Duarte , Daniela Mayumi Kita , Valéria Maia de Oliveira , Lara Durães Sette; J. Microbiol. 2021;59(7):634-643. Published online May 15, 2021; DOI: https://doi.org/10.1007/s12275-021-0395-2

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Soil contamination with diesel oil is quite common during processes of transport and storage. Bioremediation is considered a safe, economical, and environmentally friendly approach for contaminated soil treatment. In this context, studies using hydrocarbon bioremediation have focused on total petroleum hydrocarbon (TPH) analysis to assess process effectiveness, while ecotoxicity has been neglected. Thus, this study aimed to select a microbial consortium capable of detoxifying diesel oil and apply this consortium to the bioremediation of soil contaminated with this environmental pollutant through different bioremediation approaches. Gas chromatography (GC-FID) was used to analyze diesel oil degradation, while ecotoxicological bioassays with the bioindicators Artemia sp., Aliivibrio fischeri (Microtox), and Cucumis sativus were used to assess detoxification. After 90 days of bioremediation, we found that the biostimulation and biostimulation/ bioaugmentation approaches showed higher rates of diesel oil degradation in relation to natural attenuation (41.9 and 26.7%, respectively). Phytotoxicity increased in the biostimulation and biostimulation/bioaugmentation treatments during the degradation process, whereas in the Microtox test, the toxicity was the same in these treatments as that in the natural attenuation treatment. In both the phytotoxicity and Microtox tests, bioaugmentation treatment showed lower toxicity. However, compared with natural attenuation, this approach did not show satisfactory hydrocarbon degradation. Based on the microcosm experiments results, we conclude that a broader analysis of the success of bioremediation requires the performance of toxicity bioassays.

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Heavy fuel oil-contaminated soil remediation by individual and bioaugmentation-assisted phytoremediation with Medicago sativa and with cold plasma-treated M. sativa
Jūratė Žaltauskaitė, Rimas Meištininkas, Austra Dikšaitytė, Laima Degutytė-Fomins, Vida Mildažienė, Zita Naučienė, Rasa Žūkienė, Kazunori Koga
Environmental Science and Pollution Research.2024; 31(20): 30026. CrossRef
Soil Corrosivity Under Natural Attenuation
Larissa O. da Silva, Sara H. de Oliveira, Rafael G. C. da Silva, Magda R. S. Vieira, Ivanilda R. de Melo, Severino L. Urtiga Filho
Materials Research.2024;[Epub] CrossRef
Updating risk remediation-endpoints for petroleum-contaminated soils? A case study in the Ecuadorian Amazon region
Daniel Hidalgo-Lasso, Karina García-Villacís, Jeaneth Urvina Ulloa, Darwin Marín Tapia, Patricio Gómez Ortega, Frederic Coulon
Heliyon.2024; 10(9): e30395. CrossRef
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Yingying Li, Yuankun Zhao, Yiyang Du, Xuechun Ren, He Ding, Zhimin Wang
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Rachel M. Ferreira, Bernardo D. Ribeiro, Danielle.M.A. Stapelfeldt, Rodrigo P. do Nascimento, Maria de.F.R. Moreira
Cleaner Chemical Engineering.2023; 6: 100107. CrossRef
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Kai Zhang, Meng Liu, Xinlong Song, Dongyu Wang
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Vasili M. Travkin, Inna P. Solyanikova
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Rab27b regulates extracellular vesicle production in cells infected with Kaposi’s sarcoma–associated herpesvirus to promote cell survival and persistent infection: Hyungtaek Jeon , Su-Kyung Kang , Myung-Ju Lee , Changhoon Park , Seung-Min Yoo , Yun Hee Kang , Myung-Shin Lee; J. Microbiol. 2021;59(5):522-529. Published online April 20, 2021; DOI: https://doi.org/10.1007/s12275-021-1108-6

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Extracellular vesicles (EVs) play a crucial role in cell-to-cell communication. EVs and viruses share several properties related to their structure and the biogenesis machinery in cells. EVs from virus-infected cells play a key role in virus spread and suppression using various loading molecules, such as viral proteins, host proteins, and microRNAs. However, it remains unclear how and why viruses regulate EV production inside host cells. The purpose of this study is to investigate the molecular mechanisms underlying EV production and their roles in Kaposi’s sarcoma-associated herpesvirus (KSHV)-infected cells. Here, we found that KSHV induced EV production in human endothelial cells via Rab- 27b upregulation. The suppression of Rab27b expression in KSHV-infected cells enhanced cell death by increasing autophagic flux and autolysosome formation. Our results indicate that Rab27b regulates EV biogenesis to promote cell survival and persistent viral infection during KSHV infection, thereby providing novel insights into the crucial role of Rab- 27b in the KSHV life cycle.

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Yue Wang, Shaozhi Gao, Geng Zhang, Wei Xiao, Baoyiyu Xu, Wengang Li
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Iman Owliaee, Mehran khaledian, Armin Khaghani Boroujeni, Ali Shojaeian
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Jisu Lee, Hyun Sik Park, Seung Ro Han, Yun Hee Kang, Ji Young Mun, Dong Wook Shin, Hyun-Woo Oh, Yoon-Kyoung Cho, Myung-Shin Lee, Jinsung Park
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Mst1/2-ALK promotes NLRP3 inflammasome activation and cell apoptosis during Listeria monocytogenes infection: Aijiao Gao , Huixin Tang , Qian Zhang , Ruiqing Liu , Lin Wang , Yashan Liu , Zhi Qi , Yanna Shen; J. Microbiol. 2021;59(7):681-692. Published online April 20, 2021; DOI: https://doi.org/10.1007/s12275-021-0638-2

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Listeria monocytogenes (L. monocytogenes) is a Gram-positive intracellular foodborne pathogen that causes severe diseases, such as meningitis and sepsis. The NLR family pyrin domain-containing 3 (NLRP3) inflammasome has been reported to participate in host defense against pathogen infection. However, the exact molecular mechanisms underlying NLRP3 inflammasome activation remain to be fully elucidated. In the present study, the roles of mammalian Ste20- like kinases 1/2 (Mst1/2) and Anaplastic Lymphoma Kinase (ALK) in the activation of the NLRP3 inflammasome induced by L. monocytogenes infection were investigated. The expression levels of Mst1/2, phospho (p)-ALK, p-JNK, Nek7, and NLRP3 downstream molecules including activated caspase- 1 (p20) and mature interleukin (IL)-1β (p17), were upregulated in L. monocytogenes-infected macrophages. The ALK inhibitor significantly decreased the expression of p-JNK, Nek7, and NLRP3 downstream molecules in macrophages infected with L. monocytogenes. Furthermore, the Mst1/2 inhibitor markedly inhibited the L. monocytogenes-induced activation of ALK, subsequently downregulating the expression of p-JNK, Nek7, and NLRP3 downstream molecules. Therefore, our study demonstrated that Mst1/2-ALK mediated the activation of the NLRP3 inflammasome by promoting the interaction between Nek7 and NLRP3 via JNK during L. monocytogenes infection, which subsequently increased the maturation and release of proinflammatory cytokine to resist pathogen infection. Moreover, Listeriolysin O played a key role in the process. In addition, we also found that the L. monocytogenes-induced apoptosis of J774A.1 cells was reduced by the Mst1/2 or ALK inhibitor. The present study reported, for the first time, that the Mst1/2-ALK-JNK-NLRP3 signaling pathway plays a vital proinflammatory role during L. monocytogenes infection.

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Deep convolutional neural network: a novel approach for the detection of Aspergillus fungi via stereomicroscopy: Haozhong Ma , Jinshan Yang , Xiaolu Chen , Xinyu Jiang , Yimin Su , Shanlei Qiao , Guowei Zhong; J. Microbiol. 2021;59(6):563-572. Published online March 29, 2021; DOI: https://doi.org/10.1007/s12275-021-1013-z

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Fungi of the genus Aspergillus are ubiquitously distributed in nature, and some cause invasive aspergillosis (IA) infections in immunosuppressed individuals and contamination in agricultural products. Because microscopic observation and molecular detection of Aspergillus species represent the most operator-dependent and time-intensive activities, automated and cost-effective approaches are needed. To address this challenge, a deep convolutional neural network (CNN) was used to investigate the ability to classify various Aspergillus species. Using a dissecting microscopy (DM)/stereomicroscopy platform, colonies on plates were scanned with a 35× objective, generating images of sufficient resolution for classification. A total of 8,995 original colony images from seven Aspergillus species cultured in enrichment medium were gathered and autocut to generate 17,142 image crops as training and test datasets containing the typical representative morphology of conidiophores or colonies of each strain. Encouragingly, the Xception model exhibited a classification accuracy of 99.8% on the training image set. After training, our CNN model achieved a classification accuracy of 99.7% on the test image set. Based on the Xception performance during training and testing, this classification algorithm was further applied to recognize and validate a new set of raw images of these strains, showing a detection accuracy of 98.2%. Thus, our study demonstrated a novel concept for an artificial-intelligence-based and cost-effective detection
method
ology for Aspergillus organisms, which also has the potential to improve the public’s understanding of the fungal kingdom.

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Review

Minor and major circRNAs in virus and host genomes: Zhihao Lou , Rui Zhou , Yinghua Su , Chun Liu , Wenting Ruan , Che Ok Jeon , Xiao Han , Chun Lin , Baolei Jia; J. Microbiol. 2021;59(3):324-331. Published online February 23, 2021; DOI: https://doi.org/10.1007/s12275-021-1021-z

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As a special type of noncoding RNA, circular RNAs (circRNAs) are prevalent in many organisms. They can serve as sponges for microRNAs and protein scaffolds, or templates for protein translation, making them linked to cellular homeostasis and disease progression. In recent years, circRNAs have been found to be abnormally expressed during the processes of viral infection and pathogenesis, and can help a virus escape the immune response of a host. Thus, they are now considered to play important functions in the invasion and development of viruses. Moreover, the potential application of circRNAs as biomarkers of viral infection or candidates for therapeutic targeting deserves consideration. This review summarizes circRNAs in the transcriptome, including their classification, production, functions, and value as biomarkers. This review paper also describes research progress on circRNAs in viral infection (mainly hepatitis B virus, HIV, and some human herpes viruses) and aims to provide new ideas for antiviral therapies targeting circRNAs.

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Journal Articles

[PROTOCOL]A Signature-Tagged Mutagenesis (STM)-based murine-infectivity assay for Cryptococcus neoformans: Kwang-Woo Jung , Kyung-Tae Lee , Yong-Sun Bahn; J. Microbiol. 2020;58(10):823-831. Published online September 29, 2020; DOI: https://doi.org/10.1007/s12275-020-0341-8

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Signature-tagged mutagenesis (STM) is a high-throughput genetic technique that can be used to investigate the function of genes by constructing a large number of mutant strains with unique DNA identification tags, pooling them, and screening them for a particular phenotypic trait. STM was first designed for the identification of genes that contribute to the virulence or infectivity of a pathogen in its host. Recently, this
method
has also been applied for the identification of mutants with specific phenotypes, such as antifungal drug resistance and proliferation. In the present study, we describe an STM
method
for the identification of genes contributing to the infectivity of Cryptococcus neoformans using a mutant library, in which each strain was tagged with a unique DNA sequence.

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Dayoung Sung, Garam Choi, Minji Ahn, Hokyung Byun, Tae Young Kim, Hojun Lee, Zee-Won Lee, Ji Yong Park, Young Hyun Jung, Ho Jae Han, Sang Ho Choi
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Journal of Microbiology.2021; 59(7): 658. CrossRef

Paenibacillus lycopersici sp. nov. and Paenibacillus rhizovicinus sp. nov., isolated from the rhizosphere of tomato (Solanum lycopersicum): Shin Ae Lee , Tae-Wan Kim , Mee-Kyung Sang , Jaekyeong Song , Soon-Wo Kwon , Hang-Yeon Weon; J. Microbiol. 2020;58(10):832-840. Published online September 29, 2020; DOI: https://doi.org/10.1007/s12275-020-0258-2

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Two Gram-stain-positive, rod-shaped, endospore-forming bacteria, designated 12200R-189T and 14171R-81T were isolated from the rhizosphere of tomato plants. The 16S rRNA gene sequence similarity between strains 12200R-189T and 14171R-81T were 97.2%. Both strains showed the highest 16S rRNA gene sequence similarities to Paenibacillus sacheonensis SY01T (96.3% and 98.0%, respectively). The genome of strain 12200R-189T was approximately 6.7 Mb in size with 5,750 protein-coding genes (CDSs) and the G + C content was 58.1 mol%, whereas that of strain 14171R-81T comprised one chromosome of 7.0 Mb and two plasmids (0.2 Mb each) with 6,595 CDSs and the G + C content was 54.5 mol%. Comparative genome analysis revealed that average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values among 12200R-189T, 14171R-81T, and other closely related species were below the cut-off levels 95% and 70%, respectively. Strain 12200R-189T grew at a temperature range of 15–40°C, pH 6.0–9.0, and 0–3% NaCl (w/v), whereas strain 14171R-81T grew at a temperature range of 10–37°C, pH 6.0– 8.0, and 0–1% NaCl (w/v). Menaquinone-7 (MK-7) was the only isoprenoid quinone detected in both strains. The predominant cellular fatty acids (> 10%) were iso-C15:0, anteiso- C15:0, and iso-C16:0. The polar lipids of strain 12200R- 189T were diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), phosphatidylethanolamine (PE), aminophospholipid (APL), phospholipid (PL), phosphatidylglycolipid (PGL), and four aminophosphoglycolipids (APGLs) and those of strain 14171R-81T were DPG, PG, PE, APL, three PLs, two PGLs, and three APGLs. Based on phylogenetic, genomic, phenotypic, and chemotaxonomic analyses, strains 12200R- 189T and 14171R-81T represent two novel species of the genus Paenibacillus, for which the names Paenibacillus lycopersici sp. nov. and Paenibacillus rhizovicinus sp. nov. are proposed. The type strains are 12200R-189T (= KACC 19916T = CCTCC AB 2020027T) and 14171R-81T (= KACC 19915T = CCTCC AB 2020026T).

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Fungal diversity in deep-sea sediments from Magellan seamounts environment of the western Pacific revealed by high-throughput Illumina sequencing: Shuai Yang , Wei Xu , Yuanhao Gao , Xiaoyao Chen , Zhu-Hua Luo; J. Microbiol. 2020;58(10):841-852. Published online September 2, 2020; DOI: https://doi.org/10.1007/s12275-020-0198-x

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There are lots of seamounts globally whose primary production is disproportionally greater than the surrounding areas. Compared to other deep-sea environments, however, the seamounts environment is relatively less explored for fungal diversity. In the present study, we explored the fungal community structure in deep-sea sediments from four different stations of the Magellan seamounts environment by using high-throughput sequencing of the ITS1 region. A total of 1,897,618 ITS1 sequences were obtained. Among these sequences, fungal ITS1 sequences could be clustered into 1,662 OTUs. The majority of these sequences belonged to Ascomycota. In the genera level, the most abundant genus was Mortierella (4.79%), which was reported as a common fungal genus in soil and marine sediments, followed by Umbelopsis (3.80%), Cladosporium (2.98%), Saccharomycopsis (2.53%), Aspergillus (2.42%), Hortaea (2.36%), Saitozyma (2.20%), Trichoderma (2.12%), Penicillium (2.11%), Russula (1.86%), and Verticillium (1.40%). Most of these recovered genera belong to Ascomycota. The Bray-Curtis analysis showed that there was 37 to 85% dissimilarity of fungal communities between each two sediment samples. The Principal coordinates analysis clearly showed variations in the fungal community among different sediment samples. These results suggested that there was a difference in fungal community structures not only among four different sampling stations but also for different layers at the same station. The depth and geographical distance significantly affect the fungal community, and the effect of depth and geographical distance on the structure of the fungal community in the Magellan seamounts is basically same. Most of the fungi were more or less related to plants, these plant parasitic/symbiotic/endophytic fungi constitute a unique type of seamounts environmental fungal ecology, different from other marine ecosystems.

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In vitro disinfection efficacy and clinical protective effects of common disinfectants against acute hepatopancreatic necrosis disease (AHPND)-causing Vibrio isolates in Pacific white shrimp Penaeus vannamei: Peizhuo Zou , Qian Yang , Hailiang Wang , Guosi Xie , Zhi Cao , Xing Chen , Wen Gao , Jie Huang; J. Microbiol. 2020;58(8):675-686. Published online July 27, 2020; DOI: https://doi.org/10.1007/s12275-020-9537-1

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Acute hepatopancreatic necrosis disease (AHPND) is one of the most significant bacterial diseases in global shrimp culture, causing severe economic losses. In the present study, we carried out in vitro antimicrobial tests to investigate the disinfection efficacy of 14 common disinfectants toward different AHPND-causing Vibrio spp., including eight isolates of V. parahaemolyticus, four isolates of V. campbellii, and one isolate of V. owensii. Polyhexamethylene biguanidine hydrochloride (PHMB) was revealed to possess the strongest inhibitory activity. Through analyzing and evaluating the results of antimicrobial tests and acute toxicity test, we selected PHMB and hydrogen peroxide (H2O2) for further clinical protection test. Clinical manifestations indicated that both PHMB (2 mg/L and 4 mg/L) and H2O2 (12 mg/L) could effectively protect juvenile Penaeus vannamei from the infection of V. parahaemolyticus isolate Vp362 at 106 CFU/ml, and the survival rate was over 80%. When the bacterial concentration was reduced to 105 CFU/ml, 104 CFU/ml, and 103 CFU/ml, the survival rate after treated by 1 mg/L PHMB was 64.44%, 93.33%, and 100%, respectively. According to the results, PHMB and H2O2 showed a lower toxicity while a better protection activity, particularly against a lower concentration of the pathogens. Therefore, these two disinfectants are proved to be promising disinfectants that can be applied to prevent and control AHPND in shrimp culture. Moreover, the methods of this study also provided valuable information for the prevention of other important bacterial diseases and suggested a reliable means for screening potential drugs in aquaculture.

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The relationship between bacterial diversity and organic carbon mineralization in soft rock and sand compound soil: Zhen Guo , Juan Li , Lei Ge , Chenxi Yang , Jichang Han; J. Microbiol. 2020;58(9):750-760. Published online July 24, 2020; DOI: https://doi.org/10.1007/s12275-020-0130-4

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The soil organic carbon (SOC) mineralization rate in sandy soil plays an important role in improving soil quality, and a research is needed to determine management practices that optimize the mineralization rate. When sandy soil is improved by adding soft rock, the specific promotion process of bacterium to SOC mineralization remain unclear. To investigate these mechanisms, we selected four treatments with soft rock to sand volume ratios of 0:1 (CK), 1:5 (C1), 1:2 (C2) and 1:1 (C3) to study. The mineralization rate of organic carbon was measured using the lye absorption method. Highthroughput sequencing and scanning electron microscopy were used to determine the bacterial community structure and soil microstructure, respectively. The results showed that the organic carbon content of the sandy soil increased significantly (182.22–276.43%) after using the soft rock treatments. The SOC mineralization rate could be divided into two stages: a rapid decline during days 1–8 and a slow decline during days 8–60. With increased incubation time, the intensity of the cumulative release of organic carbon gradually weakened. Compared with the CK treatment, the SOC mineralization accumulation (Ct) and the potential mineralizable organic carbon content (C0) in the C1, C2, and C3 treatments increased significantly, by 106.98–225.94% and 112.22– 254.08%, respectively. The cumulative mineralization rate (Cr) was 18.11% and 21.38% smaller with treatments C2 and C3, respectively. The SOC mineralization rate constant (k) decreased significantly after the addition of soft rock, while the half-turnover period (Th) changed inversely with k. Compared with the CK treatment, the number of gene copies of the soil bacteria increased by 15.38–272.53% after adding soft rock, with the most significant increase in treatment C3. The bacterial diversity index also increased significantly under treatment C3. The three dominant bacteria were Proteobacteria, Actinobacteria, and Chloroflexi. The correlation between Cr and one of the non-dominant bacteria, Firmicutes, was large, and the bacteria had a significant positive correlation with k. At the same time, the abundance of Firmicutes under treatments C2 and C3 was small. As the proportion of soft rock increased, the soil particles changed from point contact to surface contact, and the adhesion on the surface of the particles gradually increased. Results from this study show that the retention time of SOC can be increased and the carbon sequestration effect is better when the ratio of soft rock to sand is set to 1:2.

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Azohydromonas aeria sp. nov., isolated from air: Han Xue , Chun-gen Piao , Dan-ran Bian , Min-wei Guo , Yong Li; J. Microbiol. 2020;58(7):543-549. Published online June 27, 2020; DOI: https://doi.org/10.1007/s12275-020-9423-x

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A grey pink colored bacterium, strain t3-1-3T, was isolated from the air at the foot of the Xiangshan Mountain in Beijing, China. The cells are aerobic, Gram-stain-negative, non-sporeforming, motile and coccoid-rod shaped (0.9–1.2 × 1.9–2.1 μm). Strain t3-1-3T was catalase-positive and oxidase-negative and this strain grew at 4–42°C (optimum 28°C), a pH of 4.0–9.0 (optimum pH 7.0) and under 0–2% (w/v) NaCl (optimum 0–1% NaCl). A phylogenetic analysis based on 16S rRNA gene sequences revealed that strain t3-1-3T was closely related to Azohydromonas riparia UCM-11T (97.4% similarity), followed by Azohydromonas australica G1-2T (96.8%) and Azohydromonas ureilytica UCM-80T (96.7%). The genome of strain t3-1-3T contains 6,895 predicted protein-encoding genes, 8 rRNA genes, 62 tRNA genes and one sRNA gene, as well as five potential biosynthetic gene clusters, including clusters of genes coding for non-ribosomal peptide synthetase (NRPS), bacteriocin and arylpolyene and two clusters of genes for terpene. The predominant cellular fatty acids (> 10.0% of the total) in strain t3-1-3T were summed feature 3 (C16:1ω7c and/or C16:1ω6c, 37.8%), summed feature 8 (C18:1ω7c and/or C18:1ω6c, 29.7%) and C16:0 (17.3%). Strain t3-1-3T contained ubiquinone-8 (Q-8) as the predominant respiratory quinone. The polar lipids of strain t3-1-3T comprised phosphatidyl ethanolamine (PE), phosphatidyl glycerol (PG), diphosphatidyl glycerol (DPG), an unidentified glycolipid (GL), an unidentified aminophospholipid (APL), two unidentified phospholipid (PL1-2) and five unidentified lipid (L1-5). The DNA G + C content of the type strain is 70.3%. The broader range of growth temperature, assimilation of malic acid and trisodium citrate, presence of C18:3ω6c and an unidentified glycolipid and absence of C12:0 2-OH and C16:0iso differentiate strain t3-1-3T from related species. Based on the taxonomic data presented in this study, we suggest that strain t3-1-3T represents a novel species within the genus Azohydromonas, for which the name Azohydromonas aeria sp. nov. is proposed. The type strain of Azohydromonas aeria is t3-1-3T (= CFCC 13393T = LMG 30135T).

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Short-term effects of returning granulated straw on soil microbial community and organic carbon fractions in dryland farming: Wei Fan , Jinggui Wu; J. Microbiol. 2020;58(8):657-667. Published online June 25, 2020; DOI: https://doi.org/10.1007/s12275-020-9266-5

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We conducted a 2-year field experiment which was comprised of five treatments, namely no straw returning (CK), straw mulching (SM), straw plowed into the soil (SP), and straw returned in granulated form (SG). The aim of this study was to investigate the effects of different straw returning modes on soil bacterial and fungal community structure and their relationships to soil organic carbon (SOC) fractions at three different soil depths (0–20, 20–40, and 40–60 cm) in a dryland under maize cultivation in Northeast (NE) China. SM, SP, and SG treatments significantly increased SOC content. Compared with SM and SP treatments, SG treatment significantly increased the content of SOC and easily oxidizable carbon (EOC) in the topsoil (0–20 cm depth), and increased dissolved organic carbon (DOC) and SOC content of the light fraction (LFOC) in the 20–40 cm layer. Meanwhile, SG treatment exhibited the highest microbial biomass C (MBC) content in all of the three soil depths. SG treatment also enhanced bacterial richness as well as fungal richness and diversity in the upper 40 cm of soil. In addition, SG treatment increased the relative abundance of Proteobacteria in all depths, and had the highest relative abundance of Basidiomycota in the first 20 cm of soil. SP treatment showed the lowest soil organic carbon content in all fractions and soil microbial community composition. SM treatment exhibited similar results to SG treatment in SOC, DOC, and LFOC contents, and bacterial diversity in the topsoil and subsoil. As a whole, treatment SG improved soil quality and maize yield, hence we recommend returning granulated straw as the most effective practice for enhancing labile SOC fractions as well as maintaining soil diversity and microbial richness of arid farmlands in NE China.

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Lactobacillus crispatus and its enolase and glutamine synthetase influence interactions between Neisseria gonorrhoeae and human epithelial cells: Jagoda Płaczkiewicz , Paulina Chmiel , Ewelina Malinowska , Pawel B&# , Agnieszka Kwiatek; J. Microbiol. 2020;58(5):405-414. Published online April 11, 2020; DOI: https://doi.org/10.1007/s12275-020-9505-9

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Neisseria gonorrhoeae, an obligatory human pathogen causes the sexually transmitted disease gonorrhea, which remains a global health problem. N. gonorrhoeae primarily infects the mucosa of the genitourinary tract, which in women, is colonized by natural microbiota, dominated by Lactobacillus spp., that protect human cells against pathogens. In this study, we demonstrated that precolonization of human epithelial cells with Lactobacillus crispatus, one of the most prevalent bacteria in the female urogenital tract, or preincubation with the L. crispatus enolase or glutamine synthetase impairs the adhesion and invasiveness of N. gonorrhoeae toward epithelial cells, two crucial steps in gonococcal pathogenesis. Furthermore, decreased expression of genes encoding the proinflammatory cytokines, TNFα and CCL20, which are secreted as a consequence of N. gonorrhoeae infection, was observed in N. gonorrhoeae-infected epithelial cells that had been precolonized with L. crispatus or preincubated with enolase and glutamine synthetase. Thus, our results indicate that the protection of human cells against N. gonorrhoeae infection is a complex process and that L. crispatus and its proteins enolase and glutamine synthetase can have a potential role in protecting epithelial cells against gonococcal infection. Therefore, these results are important since disturbances of the microbiota or of its proteins can result in dysbiosis, which is associated with increased susceptibility of epithelium to pathogens.

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Rapid determination of carbapenem resistance by low-cost colorimetric methods: Propidium Iodide and alamar blue staining: Jiyoon Choi , Jiwon Baek , Daehyuk Kweon , Kwan Soo Ko , Hyunjin Yoon; J. Microbiol. 2020;58(5):415-421. Published online March 28, 2020; DOI: https://doi.org/10.1007/s12275-020-9549-x

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Carbapenems are a class of β-lactam antibiotics with a broad antimicrobial activity spectrum. Owing to their sturdy structures resistant to most β-lactamases, they have been regarded as one of the last-resort antibiotics for combating multidrugresistant bacterial infections. However, the emergence of carbapenem resistance increases predominantly in nosocomial pathogens. To prevent spread of carbapenem resistance in early stages, it is imperative to develop rapid diagnostic tests that will substantially reduce the time and cost in determining carbapenem resistance. Thus, we devised a staining-based diagnostic method applicable to three different Gram-negative pathogens of Acinetobacter baumannii, Escherichia coli, and Klebsiella pneumoniae, all with the high potential to develop carbapenem resistance. Regardless of the resistance mechanisms presented by bacterial species and strains, double staining with propidium iodide (PI) and alamar blue (AB) identified resistant bacteria with an average sensitivity of 95.35%, 7 h after imipenem treatments in 343 clinical isolates. Among the three species tested, A. baumannii showed the highest diagnostic sensitivity of 98.46%. The PI and ABmediated staining method could be a promising diagnostic
method
with high-throughput efficacy and low cost.

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Streptococcus pneumoniae aminopeptidase N contributes to bacterial virulence and elicits a strong innate immune response through MAPK and PI3K/AKT signaling: Ling Wang , Xuemei Zhang , Guangying Wu , Yuhong Qi , Jinghui Zhang , Jing Yang , Hong Wang , Wenchun Xu; J. Microbiol. 2020;58(4):330-339. Published online February 27, 2020; DOI: https://doi.org/10.1007/s12275-020-9538-0

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Streptococcus pneumoniae is a Gram-positive pathogen with high morbidity and mortality globally but some of its pathogenesis remains unknown. Previous research has provided evidence that aminopeptidase N (PepN) is most likely a virulence factor of S. pneumoniae. However, its role in S. pneumoniae virulence and its interaction with the host remains to be confirmed. We generated a pepN gene deficient mutant strain and found that its virulence for mice was significantly attenuated as were in vitro adhesion and invasion of host cells. The PepN protein could induce a strong innate immune response in vivo and in vitro and induced secretion of IL-6 and TNF-α by primary peritoneal macrophages via the rapid phosphorylation of MAPK and PI3K/AKT signaling pathways and this was confirmed using specific pathway inhibitors. In conclusion, PepN is a novel virulence factor that is essential for the virulence of S. pneumoniae and induces host innate immunity via MAPK and PI3K/AKT signaling.

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Hepatitis E virus (HEV) is a causative agent of acute hepatitis and jaundice. The number of human infections is approximated to be over 20 million cases per year. The transmission is mainly via the fecal-oral route and contaminated water and food are considered to be a major source of infection. As a mouse model is not available, a recent development of a cell culture-adapted HEV strain (47832c) is considered as a very important tools for molecular analysis of HEV pathogenesis in cells. Previously, we demonstrated that HEV-encoded methyltransferase (MeT) encoded by the 47832c strain inhibits MDA5- and RIG-I-mediated activation of interferon β (IFN-β) promoter. Here, we report that MeT impairs the phosphorylation and activation of interferon regulatory factor 3 and the p65 subunit of NF-κB in a dose-dependent manner. In addition, the MeT encoded by the 47832c, but not that of HEV clinical or field isolates (SAR-55, Mex-14, KC-1, and ZJ-1), displays the inhibitory effect. A deeper understanding of MeTmediated suppression of IFN-β expression would provide basis of the cell culture adaptation of HEV.

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Viral Hepatitis: Host Immune Interaction, Pathogenesis and New Therapeutic Strategies
Angela Quirino, Nadia Marascio, Francesco Branda, Alessandra Ciccozzi, Chiara Romano, Chiara Locci, Ilenia Azzena, Noemi Pascale, Grazia Pavia, Giovanni Matera, Marco Casu, Daria Sanna, Marta Giovanetti, Giancarlo Ceccarelli, Pierfrancesco Alaimo di Loro,
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Hepatitis E virus: from innate sensing to adaptive immune responses
Yannick Brüggemann, Mara Klöhn, Heiner Wedemeyer, Eike Steinmann
Nature Reviews Gastroenterology & Hepatology.2024; 21(10): 710. CrossRef
Structural aspects of hepatitis E virus
Florencia Cancela, Ofelia Noceti, Juan Arbiza, Santiago Mirazo
Archives of Virology.2022; 167(12): 2457. CrossRef
Host Innate Immunity Against Hepatitis Viruses and Viral Immune Evasion
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Sameer-ul-Salam Mattoo, Jinjong Myoung
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Hepatitis E Virus: How It Escapes Host Innate Immunity
Sébastien Lhomme, Marion Migueres, Florence Abravanel, Olivier Marion, Nassim Kamar, Jacques Izopet
Vaccines.2020; 8(3): 422. CrossRef
Chikungunya Virus nsP2 Impairs MDA5/RIG-I-Mediated Induction of NF-κB Promoter Activation: A Potential Target for Virus-Specific Therapeutics
Sojung Bae, Jeong Yoon Lee, Jinjong Myoung
Journal of Microbiology and Biotechnology.2020; 30(12): 1801. CrossRef
Zika Virus-Encoded NS2A and NS4A Strongly Downregulate NF-κB Promoter Activity
Jeong Yoon Lee, Thi Thuy Ngan Nguyen, Jinjong Myoung
Journal of Microbiology and Biotechnology.2020; 30(11): 1651. CrossRef

A histone deacetylase, MoHOS2 regulates asexual development and virulence in the rice blast fungus: Jongjune Lee , Jae-Joon Lee , Junhyun Jeon; J. Microbiol. 2019;57(12):1115-1125. Published online November 22, 2019; DOI: https://doi.org/10.1007/s12275-019-9363-5

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Histone acetylation/deacetylation represent a general and efficient epigenetic mechanism through which fungal cells control gene expression. Here we report developmental requirement of MoHOS2-mediated histone deacetylation (HDAC) for the rice blast fungus, Magnaporthe oryzae. Structural similarity and nuclear localization indicated that MoHOS2 is an ortholog of Saccharomyces cerevisiae Hos2, which is a member of class I histone deacetylases and subunit of Set3 complex. Deletion of MoHOS2 led to 25% reduction in HDAC activity, compared to the wild-type, confirming that it is a bona-fide HDAC. Lack of MoHOS2 caused decrease in radial growth and impinged dramatically on asexual sporulation. Such reduction in HDAC activity and phenotypic defects of ΔMohos2 were recapitulated by a single amino acid change in conserved motif that is known to be important for HDAC activity. Expression analysis revealed up-regulation of MoHOS2 and concomitant down-regulation of some of the key genes involved in asexual reproduction under sporulation-promoting condition. In addition, the deletion mutant exhibited defect in appressorium formation from both germ tube tip and hyphae. As a result, ΔMohos2 was not able to cause disease symptoms. Wound-inoculation showed that the mutant is compromised in its ability to grow inside host plants as well. We found that some of ROS detoxifying genes and known effector genes are de-regulated in the mutant. Taken together, our data suggest that MoHOS2-dependent histone deacetylation is pivotal for proper timing and induction of transcription of the genes that coordinate developmental changes and host infection in M. oryzae.

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FolSas2 is a regulator of early effector gene expression during Fusarium oxysporum infection
Limin Song, Yalei Wang, Fahui Qiu, Xiaoxia Li, Jingtao Li, Wenxing Liang
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The role of Penicillium expansum histone deacetylases HosA and HosB in growth, development, and patulin production
Belén Llobregat, Antonio Abad-Fuentes, Josep V. Mercader, Luis González-Candelas, Ana-Rosa Ballester
Microbiological Research.2025; 297: 128181. CrossRef
Genome-wide identification of the lysine deacetylases gene and its dynamic expression profile during adversity stress and infestation in Arthrinium phaeospermum
Sijia Liu, Ziqi Ye, Jia Song, Yutong Liu, Shujiang Li
World Journal of Microbiology and Biotechnology.2025;[Epub] CrossRef
Glsirt1-mediated deacetylation of GlCAT regulates intracellular ROS levels, affecting ganoderic acid biosynthesis in Ganoderma lucidum
Jing Han, Lingshuai Wang, Xin Tang, Rui Liu, Liang Shi, Jing Zhu, Mingwen Zhao
Free Radical Biology and Medicine.2024; 216: 1. CrossRef
Histone (de)acetylation in epigenetic regulation of Phytophthora pathobiology
Yufeng Guan, Joanna Gajewska, Jolanta Floryszak‐Wieczorek, Umesh Kumar Tanwar, Ewa Sobieszczuk‐Nowicka, Magdalena Arasimowicz‐Jelonek
Molecular Plant Pathology.2024;[Epub] CrossRef
Regulatory roles of epigenetic modifications in plant-phytopathogen interactions
Zeng Tao, Fei Yan, Matthias Hahn, Zhonghua Ma
Crop Health.2023;[Epub] CrossRef
The additional PRC2 subunit and Sin3 histone deacetylase complex are required for the normal distribution of H3K27me3 occupancy and transcriptional silencing in Magnaporthe oryzae
Chuyu Lin, Zhongling Wu, Huanbin Shi, Jinwei Yu, Mengting Xu, Fucheng Lin, Yanjun Kou, Zeng Tao
New Phytologist.2022; 236(2): 576. CrossRef
Regulatory Roles of Histone Modifications in Filamentous Fungal Pathogens
Yiling Lai, Lili Wang, Weilu Zheng, Sibao Wang
Journal of Fungi.2022; 8(6): 565. CrossRef
Polycomb Repressive Complex 2-Mediated H3K27 Trimethylation Is Required for Pathogenicity in Magnaporthe oryzae
Zhongling Wu, Jiehua Qiu, Huanbin Shi, Chuyu Lin, Jiangnan Yue, Zhiquan Liu, Wei Xie, Naweed I. Naqvi, Yanjun Kou, Zeng Tao
Rice Science.2022; 29(4): 363. CrossRef
Protein acetylation and deacetylation in plant‐pathogen interactions
Jing Wang, Chao Liu, Yun Chen, Youfu Zhao, Zhonghua Ma
Environmental Microbiology.2021; 23(9): 4841. CrossRef
Emerging Roles of Posttranslational Modifications in Plant-Pathogenic Fungi and Bacteria
Wende Liu, Lindsay Triplett, Xiao-Lin Chen
Annual Review of Phytopathology.2021; 59(1): 99. CrossRef
Fungal Lysine Deacetylases in Virulence, Resistance, and Production of Small Bioactive Compounds
Ingo Bauer, Stefan Graessle
Genes.2021; 12(10): 1470. CrossRef
A Histone Deacetylase, Magnaporthe oryzae RPD3, Regulates Reproduction and Pathogenic Development in the Rice Blast Fungus
Song Hee Lee, Mohamed El-Agamy Farh, Jaejoon Lee, Young Taek Oh, Eunbyeol Cho, Jiyeun Park, Hokyoung Son, Junhyun Jeon, Antonio Di Pietro
mBio.2021;[Epub] CrossRef
The Histone Deacetylases MoRpd3 and MoHst4 Regulate Growth, Conidiation, and Pathogenicity in the Rice Blast Fungus Magnaporthe oryzae
Chaoxiang Lin, Xue Cao, Ziwei Qu, Shulin Zhang, Naweed I. Naqvi, Yi Zhen Deng, Aaron P. Mitchell
mSphere.2021;[Epub] CrossRef
Histone Acetyltransferases and Deacetylases Are Required for Virulence, Conidiation, DNA Damage Repair, and Multiple Stresses Resistance of Alternaria alternata
Haijie Ma, Lei Li, Yunpeng Gai, Xiaoyan Zhang, Yanan Chen, Xiaokang Zhuo, Yingzi Cao, Chen Jiao, Fred G. Gmitter, Hongye Li
Frontiers in Microbiology.2021;[Epub] CrossRef
Function of PoLAE2, a laeA homolog, in appressorium formation and cAMP signal transduction in Pyricularia oryzae
Pradabrat Prajanket, Kim-Chi Thi Vu, Jun Arai, Worawan Sornkom, Ayumi Abe, Teruo Sone
Bioscience, Biotechnology, and Biochemistry.2020; 84(11): 2401. CrossRef
A Histone Deacetylase, MoHDA1 Regulates Asexual Development and Virulence in the Rice Blast Fungus
Taehyun Kim, Song Hee Lee, Young Taek Oh, Junhyun Jeon
The Plant Pathology Journal.2020; 36(4): 314. CrossRef
Protein Acetylation/Deacetylation: A Potential Strategy for Fungal Infection Control
Junzhu Chen, Qiong Liu, Lingbing Zeng, Xiaotian Huang
Frontiers in Microbiology.2020;[Epub] CrossRef

Transcriptome analysis to understand the effects of the toxoflavin and tropolone produced by phytopathogenic Burkholderia on Escherichia coli: Jungwook Park , Hyun-Hee Lee , Hyejung Jung , Young-Su Seo; J. Microbiol. 2019;57(9):781-794. Published online August 27, 2019; DOI: https://doi.org/10.1007/s12275-019-9330-1

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The phytopathogenic Burkholderia species B. glumae and B. plantarii are the causal agents of bacterial wilt, grain rot, and seedling blight, which threaten the rice industry globally. Toxoflavin and tropolone are produced by these phytopathogens and are considered the most hostile biohazards with a broad spectrum of target organisms. However, despite their nonspecific toxicity, the effects of toxoflavin and tropolone on bacteria remain unknown. RNA-seq based transcriptome analysis was employed to determine the genome-wide expression patterns under phytotoxin treatment. Expression of 2327 and 830 genes was differentially changed by toxoflavin and tropolone, respectively. Enriched biological pathways reflected the down-regulation of oxidative phosphorylation and ribosome function, beginning with the inhibition of membrane biosynthesis and nitrogen metabolism under oxidative stress or iron starvation. Conversely, several systems such as bacterial chemotaxis, flagellar assembly, biofilm formation, and sulfur/taurine transporters were highly expressed as countermeasures against the phytotoxins. In addition, our findings revealed that three hub genes commonly induced by both phytotoxins function as the siderophore enterobactin, an ironchelator. Our study provides new insights into the effects of phytotoxins on bacteria for better understanding of the interactions between phytopathogens and other microorganisms. These data will also be applied as a valuable source in subsequent applications against phytotoxins, the major virulence factor.

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AHL-Based Quorum Sensing Regulates the Biosynthesis of a Variety of Bioactive Molecules in Bacteria
Mélanie Gonzales, Pauline Jacquet, Floriane Gaucher, Éric Chabrière, Laure Plener, David Daudé
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Hui Wang, Lili Hu, Xiaotu Chang, Yuge Hu, Yan Zhang, Peng Zhou, Xiaojiao Cui
Food Chemistry.2023; 399: 134010. CrossRef
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Zhanyi Yang, Shiqi He, Yingxin Wei, Xuefeng Li, Anshan Shan, Jiajun Wang
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A membrane protein of the rice pathogen Burkholderia glumae required for oxalic acid secretion and quorum sensing
Asif Iqbal, George Nwokocha, Vijay Tiwari, Inderjit K. Barphagha, Anne Grove, Jong Hyun Ham, William T. Doerrler
Molecular Plant Pathology.2023; 24(11): 1400. CrossRef
Characterisation of Pythium aristosporum Oomycete—A Novel Pathogen Causing Rice Seedling Blight in China
Jinxin Liu, Ruisi Zhang, Chuzhen Xu, Chunlai Liu, Yanyan Zheng, Xue Zhang, Shasha Liu, Yonggang Li
Journal of Fungi.2022; 8(9): 890. CrossRef
Toxoflavin secreted by Pseudomonas alcaliphila inhibits the growth of Legionella pneumophila and Vermamoeba vermiformis
Sebastien P. Faucher, Sara Matthews, Arvin Nickzad, Passoret Vounba, Deeksha Shetty, Émilie Bédard, Michele Prévost, Eric Déziel, Kiran Paranjape
Water Research.2022; 216: 118328. CrossRef
Chemical or Genetic Alteration of Proton Motive Force Results in Loss of Virulence of Burkholderia glumae, the Cause of Rice Bacterial Panicle Blight
Asif Iqbal, Pradip R. Panta, John Ontoy, Jobelle Bruno, Jong Hyun Ham, William T. Doerrler, Gladys Alexandre
Applied and Environmental Microbiology.2021;[Epub] CrossRef
Multiple endogenous seed-born bacteria recovered rice growth disruption caused by Burkholderia glumae
Chiharu Akimoto-Tomiyama
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