Journal of Microbiology

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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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Abstract PDF: 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.

Reviews

Microbiome-Mucosal Immunity Nexus: Driving Forces in Respiratory Disease Progression: Young Chae Park, Soo Yeon Choi, Yunah Cha, Hyeong Won Yoon, Young Min Son; J. Microbiol. 2024;62(9):709-725. Published online September 6, 2024; DOI: https://doi.org/10.1007/s12275-024-00167-4

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The importance of the complex interplay between the microbiome and mucosal immunity, particularly within the respiratory tract, has gained significant attention due to its potential implications for the severity and progression of lung diseases. Therefore, this review summarizes the specific interactions through which the respiratory tract-specific microbiome influences mucosal immunity and ultimately impacts respiratory health. Furthermore, we discuss how the microbiome affects mucosal immunity, considering tissue-specific variations, and its capacity in respiratory diseases containing asthma, chronic obstructive pulmonary disease, and lung cancer. Additionally, we investigate the external factors which affect the relationship between respiratory microbiome and mucosal immune responses. By exploring these intricate interactions, this review provides valuable insights into the potential for microbiome-based interventions to modulate mucosal immunity and alleviate the severity of respiratory diseases.

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Bacteria and fungi of the lung: allies or enemies?
Enrico Garaci, Marilena Pariano, Emilia Nunzi, Claudio Costantini, Marina Maria Bellet, Cinzia Antognelli, Matteo Antonio Russo, Luigina Romani
Frontiers in Pharmacology.2024;[Epub] CrossRef

Metabolic Interaction Between Host and the Gut Microbiota During High‑Fat Diet‑Induced Colorectal Cancer: Chaeeun Lee, Seungrin Lee, Woongjae Yoo; J. Microbiol. 2024;62(3):153-165. Published online April 16, 2024; DOI: https://doi.org/10.1007/s12275-024-00123-2

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Abstract

Colorectal cancer (CRC) is the second-highest cause of cancer-associated mortality among both men and women worldwide. One of the risk factors for CRC is obesity, which is correlated with a high-fat diet prevalent in Western dietary habits. The association between an obesogenic high-fat diet and CRC has been established for several decades; however, the mechanisms by which a high-fat diet increases the risk of CRC remain unclear. Recent studies indicate that gut microbiota strongly infuence the pathogenesis of both high-fat diet-induced obesity and CRC. The gut microbiota is composed of hundreds of bacterial species, some of which are implicated in CRC. In particular, the expansion of facultative anaerobic Enterobacteriaceae, which is considered a microbial signature of intestinal microbiota functional imbalance (dysbiosis), is associated with both high-fat diet-induced obesity and CRC. Here, we review the interaction between the gut microbiome and its metabolic byproducts in the context of colorectal cancer (CRC) during high-fat diet-induced obesity. In addition, we will cover how a high-fat diet can drive the expansion of genotoxin-producing Escherichia coli by altering intestinal epithelial cell metabolism during gut infammation conditions.

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Wheat β-glucan reduces obesity and hyperlipidemia in mice with high-fat and high-salt diet by regulating intestinal flora
Min Li, Qingshan Wang, Xiuwei Zhang, Kaikai Li, Meng Niu, Siming Zhao
International Journal of Biological Macromolecules.2025; 288: 138754. CrossRef
Microbial Metabolites-induced Epigenetic Modifications for Inhibition of Colorectal Cancer: Current Status and Future Perspectives
Vaibhav Singh, Ekta Shirbhate, Rakesh Kore, Subham Vishwakarma, Shadiya Parveen, Ravichandran Veerasamy, Amit K Tiwari, Harish Rajak
Mini-Reviews in Medicinal Chemistry.2025; 25(1): 76. CrossRef
Molecular Mechanisms of Skatole-Induced Inflammatory Responses in Intestinal Epithelial Caco-2 Cells: Implications for Colorectal Cancer and Inflammatory Bowel Disease
Katsunori Ishii, Kazuma Naito, Dai Tanaka, Yoshihito Koto, Koichi Kurata, Hidehisa Shimizu
Cells.2024; 13(20): 1730. CrossRef
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Journal of Microbiology.2024; 62(3): 135. CrossRef

Journal Articles

Alpha‑Hemolysin from Staphylococcus aureus Obstructs Yeast‑Hyphae Switching and Diminishes Pathogenicity in Candida albicans: Xiaoyu Yu , Yinhe Mao , Guangbo Li , Xianwei Wu , Qiankun Xuan , Simin Yang , Xiaoqing Chen , Qi Cao , Jian Guo , Jinhu Guo , Wenjuan Wu; J. Microbiol. 2023;61(2):233-243. Published online February 9, 2023; DOI: https://doi.org/10.1007/s12275-022-00006-4

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Abstract

The use of antibiotics can disrupt the body’s natural balance and increase the susteptibility of patients towards fungal infections. Candida albicans is a dimorphic opportunistic fungal pathogen with niches similar to those of bacteria. Our aim was to study the interaction between this pathogen and bacteria to facilitate the control of C. albicans infection. Alpha-hemolysin (Hla), a protein secreted from Staphylococcus aureus, causes cell wall damage and impedes the yeast–hyphae transition in C. albicans. Mechanistically, Hla stimulation triggered the formation of reactive oxygen species that damaged the cell wall and mitochondria of C. albicans. The cell cycle was arrested in the G0/G1 phase, CDC42 was downregulated, and Ywp1 was upregulated, disrupting yeast hyphae switching. Subsequently, hyphae development was inhibited. In mouse models, C. albicans pretreated with Hla reduced the C. albicans burden in skin and vaginal mucosal infections, suggesting that S. aureus Hla can inhibit hyphal development and reduce the pathogenicity of candidiasis in vivo.

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Candida albicans and Candida glabrata : global priority pathogens
Myrto Katsipoulaki, Mark H. T. Stappers, Dhara Malavia-Jones, Sascha Brunke, Bernhard Hube, Neil A. R. Gow, Joseph Heitman
Microbiology and Molecular Biology Reviews.2024;[Epub] CrossRef

Potential Use of Mycobacterium paragordonae for Antimycobacterial Drug Screening Systems: Ga-Yeong Cha , Hyejun Seo , Jaehun Oh , Byoung-Jun Kim , Bum-Joon Kim; J. Microbiol. 2023;61(1):121-129. Published online January 31, 2023; DOI: https://doi.org/10.1007/s12275-022-00009-1

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Abstract

Our recent genome-based study indicated that Mycobacterium paragordonae (Mpg) has evolved to become more adapted to an intracellular lifestyle within free-living environmental amoeba and its enhanced intracellular survival within Acanthamoeba castellanii was also proved. Here, we sought to investigate potential use of Mpg for antimycobacterial drug screening systems. Our data showed that Mpg is more susceptible to various antibiotics compared to the close species M. marinum (Mmar) and M. gordonae, further supporting its intracellular lifestyle in environments, which would explain its protection from environmental insults. In addition, we developed two bacterial whole-cell-based drug screening systems using a recombinant Mpg stain harboring a luciferase reporter vector (rMpg-LuxG13): one for direct application to rMpg-LuxG13 and the other for drug screening via the interaction of rMpg-LuxG13 with A. castellanii. Direct application to rMpg-LuxG13 showed lower inhibitory concentration 50 ( IC50) values of rifampin, isoniazid, clarithromycin, and ciprofloxacin against Mpg compared to Mmar. Application of drug screening system via the interaction of rMpg-LuxG13 with A. castellanii also exhibited lower IC50 values for rifampin against Mpg compared to Mmar. In conclusion, our data indicate that Mpg is more susceptible to various antibiotics than other strains. In addition, our data also demonstrate the feasibility of two whole cellbased drug screening systems using rMpg-LuxG13 strain for the discovery of novel anti-mycobacterial drugs.

Citations

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Mycobacterium paragordonae: Insights into its Research Progress and Potential Applications
Hyejun Seo, Ju-Young Lee, Bum-Joon Kim
Journal of Bacteriology and Virology.2024; 54(4): 273. CrossRef
Protection against tuberculosis achieved by dissolving microneedle patches loaded with live Mycobacterium paragordonae in a BCG prime-boost strategy
Mi-Hyun Lee, Hyejun Seo, Moon-Su Lee, Byoung Jun Kim, Hye Lin Kim, Du Hyung Lee, Jaehun Oh, Ju Yeop Shin, Ju Young Jin, Do Hyeon Jeong, Bum-Joon Kim
Frontiers in Immunology.2023;[Epub] CrossRef

Review

COVID-19 vaccine development based on recombinant viral and bacterial vector systems: combinatorial effect of adaptive and trained immunity: Mi-Hyun Lee , Bum-Joon Kim; J. Microbiol. 2022;60(3):321-334. Published online February 14, 2022; DOI: https://doi.org/10.1007/s12275-022-1621-2

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Abstract

Severe acute respiratory syndrome coronavirus 2 virus (SARSCoV- 2) infection, which causes coronavirus disease 2019 (COVID-19), has led to many cases and deaths worldwide. Therefore, a number of vaccine candidates have been developed to control the COVID-19 pandemic. Of these, to date, 21 vaccines have received emergency approval for human use in at least one country. However, the recent global emergence of SARS-CoV-2 variants has compromised the efficacy of the currently available vaccines. To protect against these variants, the use of vaccines that modulate T cell-mediated immune responses or innate immune cell memory function, termed trained immunity, is needed. The major advantage of a vaccine that uses bacteria or viral systems for the delivery of COVID-19 antigens is the ability to induce both T cell-mediated and humoral immune responses. In addition, such vaccine systems can also exert off-target effects via the vector itself, mediated partly through trained immunity; compared to other vaccine platforms, suggesting that this approach can provide better protection against even vaccine escape variants. This review presents the current status of the development of COVID-19 vaccines based on recombinant viral and bacterial delivery systems. We also discuss the current status of the use of licensed live vaccines for other infections, including BCG, oral polio and MMR vaccines, to prevent COVID-19 infections.

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Real-time infectious disease endurance indicator system for scientific decisions using machine learning and rapid data processing
Shivendra Dubey, Dinesh Kumar Verma, Mahesh Kumar
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Fernando Santos‐Beneit
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Susan Martins Pereira, Florisneide Rodrigues Barreto, Ramon Andrade de Souza, Carlos Antonio de Souza Teles Santos, Marcos Pereira, Enny Santos da Paixão, Carla Cristina Oliveira de Jesus Lima, Marcio Santos da Natividade, Ana Angélica Bulcão Portela Lind
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Areg A. Totolian, Viacheslav S. Smirnov, Alexei A. Krasnov, Edward S. Ramsay, Vladimir G. Dedkov, Anna Y. Popova
Viruses.2023; 15(11): 2181. CrossRef
The Cellular and Epigenetic Aspects of Trained Immunity and Prospects for Creation of Universal Vaccines on the Eve of More Frequent Pandemics
I. V. Alekseenko, R. G. Vasilov, L. G. Kondratyeva, S. V. Kostrov, I. P. Chernov, E. D. Sverdlov
Russian Journal of Genetics.2023; 59(9): 851. CrossRef
Coronavirus XBB.1.5 as an Indicator of the Long-Term Continuation of the Covid-19 pandemic. What Next for Vaccination?
E. P. Kharchenko
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Yasunari Matsuzaka, Ryu Yashiro
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Distinctive Combinations of RBD Mutations Contribute to Antibody Evasion in the Case of the SARS-CoV-2 Beta Variant
Tae-Hun Kim, Sojung Bae, Sunggeun Goo, Jinjong Myoung
Journal of Microbiology and Biotechnology.2023; 33(12): 1587. CrossRef
Leishmania tarentolae: a vaccine platform to target dendritic cells and a surrogate pathogen for next generation vaccine research in leishmaniases and viral infections
Claudio Bandi, Jairo Alfonso Mendoza-Roldan, Domenico Otranto, Alessandro Alvaro, Viviane Noll Louzada-Flores, Massimo Pajoro, Ilaria Varotto-Boccazzi, Matteo Brilli, Alessandro Manenti, Emanuele Montomoli, Gianvincenzo Zuccotti, Sara Epis
Parasites & Vectors.2023;[Epub] CrossRef
Cellular and Epigenetic Aspects of Trained Immunity and Prospects for Creation of Universal Vaccines in the Face of Increasingly Frequent Pandemics
I. V. Alekseenko, R. G. Vasilov, L. G. Kondratyeva, S. V. Kostrov, I. P. Chernov, E. D. Sverdlov
Генетика.2023; 59(9): 981. CrossRef
BNT162b2 COVID-19 vaccination in children alters cytokine responses to heterologous pathogens and Toll-like receptor agonists
Andrés Noé, Thanh D. Dang, Christine Axelrad, Emma Burrell, Susie Germano, Sonja Elia, David Burgner, Kirsten P. Perrett, Nigel Curtis, Nicole L. Messina
Frontiers in Immunology.2023;[Epub] CrossRef
The Natural Effect of BCG Vaccination on COVID-19: The Debate Continues
Wenping Gong, Huiru An, Jie Wang, Peng Cheng, Yong Qi
Frontiers in Immunology.2022;[Epub] CrossRef
Two years of COVID-19 pandemic: where are we now?
Jinjong Myoung
Journal of Microbiology.2022; 60(3): 235. CrossRef

Journal Articles

[PROTOCOL] Flow cytometric monitoring of the bacterial phenotypic diversity in aquatic ecosystems: Jin-Kyung Hong , Soo Bin Kim , Seok Hyun Ahn , Yongjoo Choi , Tae Kwon Lee; J. Microbiol. 2021;59(10):879-885. Published online September 23, 2021; DOI: https://doi.org/10.1007/s12275-021-1443-7

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Abstract

Flow cytometry is a promising tool used to identify the phenotypic features of bacterial communities in aquatic ecosystems by measuring the physical and chemical properties of cells based on their light scattering behavior and fluorescence. Compared to molecular or culture-based approaches, flow cytometry is suitable for the online monitoring of microbial water quality because of its relatively simple sample preparation process, rapid analysis time, and high-resolution phenotypic data. Advanced statistical techniques (e.g., denoising and binning) can be utilized to successfully calculate phenotypic diversity by processing the scatter data obtained from flow cytometry. These phenotypic diversities were well correlated with taxonomic-based diversity computed using nextgeneration 16S RNA gene sequencing. The protocol provided in this paper should be a useful guide for a fast and reliable flow cytometric monitoring of bacterial phenotypic diversity in aquatic ecosystems.

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Assessing long-term ecological impacts of PCE contamination in groundwater using a flow cytometric fingerprint approach
Jin-Kyung Hong, Soo Bin Kim, Gui Nam Wee, Bo Ram Kang, Jee Hyun No, Susmita Das Nishu, Joonhong Park, Tae Kwon Lee
Science of The Total Environment.2024; 931: 172698. CrossRef
Phenotypic shifts induced by environmental pre-stressors modify antibiotic resistance in Staphylococcus aureus
Gui Nam Wee, Eun Sun Lyou, Susmita Das Nishu, Tae Kwon Lee
Frontiers in Microbiology.2023;[Epub] CrossRef

Salicibibacter cibarius sp. nov. and Salicibibacter cibi sp. nov., two novel species of the family Bacillaceae isolated from kimchi: Young Joon Oh , Joon Yong Kim , Seul Ki Lim , Min-Sung Kwon , Hak-Jong Choi; J. Microbiol. 2021;59(5):460-466. Published online April 28, 2021; DOI: https://doi.org/10.1007/s12275-021-0513-1

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Abstract

To date, all species in the genus Salicibibacter have been isolated in Korean commercial kimchi. We aimed to describe the taxonomic characteristics of two strains, NKC5-3T and NKC21-4T, isolated from commercial kimchi collected from various regions in the Republic of Korea. Cells of these strains were rod-shaped, Gram-positive, aerobic, oxidase- and catalase- positive, non-motile, halophilic, and alkalitolerant. Both strains, unlike other species of the genus Salicibibacter, could not grow without NaCl. Strains NKC5-3T and NKC21-4T could tolerate up to 25.0% (w/v) NaCl (optimum 10%) and grow at pH 7.0–10.0 (optimum 8.5) and 8.0–9.0 (optimum 8.5), respectively; they showed 97.1% 16S rRNA gene sequence similarity to each other and were most closely related to S. kimchii NKC1-1T (97.0% and 96.8% similarity, respectively). The genome of strain NKC5-3T was nearly 4.6 Mb in size, with 4,456 protein-coding sequences (CDSs), whereas NKC21-4T genome was nearly 3.9 Mb in size, with 3,717 CDSs. OrthoANI values between the novel strains and S. kimchii NKC1-1T were far lower than the species demarcation threshold. NKC5-3T and NKC21-4T clustered together to form branches that were distinct from the other Salicibibacter species. The major fatty acids in these strains were anteiso-C15:0 and anteiso-C17:0, and the predominant menaquinone was menaquinone-7. The polar lipids of NKC5-3T included diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), and five unidentified phospholipids (PL), and those of NKC21-4T included DPG, PG, seven unidentified PLs, and an unidentified lipid. Both isolates had DPG, which is the first case in the genus Salicibibacter. The genomic G + C content of strains NKC5-3T and NKC21-4T was 44.7 and 44.9 mol%, respectively. Based on phenotypic, genomic, phylogenetic, and chemotaxonomic analyses, strains NKC5-3T (= KACC 22040T = DSM 111417T) and NKC21-4T (= KACC 22041T = DSM 111418T) represent two novel species of the genus Salicibibacter, for which the names Salicibibacter cibarius sp. nov. and Salicibibacter cibi sp. nov. are proposed.

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Valid publication of new names and new combinations effectively published outside the IJSEM
Aharon Oren, George M. Garrity
International Journal of Systematic and Evolutionary Microbiology .2021;[Epub] CrossRef

Review

Rediscovery of antimicrobial peptides as therapeutic agents: Minkyung Ryu , Jaeyeong Park , Ji-Hyun Yeom , Minju Joo , Kangseok Lee; J. Microbiol. 2021;59(2):113-123. Published online February 1, 2021; DOI: https://doi.org/10.1007/s12275-021-0649-z

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Abstract

In recent years, the occurrence of antibiotic-resistant pathogens is increasing rapidly. There is growing concern as the development of antibiotics is slower than the increase in the resistance of pathogenic bacteria. Antimicrobial peptides (AMPs) are promising alternatives to antibiotics. Despite their name, which implies their antimicrobial activity, AMPs have recently been rediscovered as compounds having antifungal, antiviral, anticancer, antioxidant, and insecticidal effects. Moreover, many AMPs are relatively safe from toxic side effects and the generation of resistant microorganisms due to their target specificity and complexity of the mechanisms underlying their action. In this review, we summarize the history, classification, and mechanisms of action of AMPs, and provide descriptions of AMPs undergoing clinical trials. We also discuss the obstacles associated with the development of AMPs as therapeutic agents and recent strategies formulated to circumvent these obstacles.

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Muhammad Asif, Shuang Liang, Hu RenJian, Xin Xie, Zhibo Zhao
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Mechanistic insights on the antibacterial action of the kyotorphin peptide derivatives revealed by in vitro studies and Galleria mellonella proteomic analysis
Vitor M. de Andrade, Vitor D.M. de Oliveira, Uilla Barcick, Vasanthakumar G. Ramu, Montserrat Heras, Eduard R. Bardají, Miguel A.R.B. Castanho, André Zelanis, Aline Capella, Juliana C. Junqueira, Katia Conceição
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Raynichka Mihaylova-Garnizova, Slavena Davidova, Yordan Hodzhev, Galina Satchanska
International Journal of Molecular Sciences.2024; 25(19): 10788. CrossRef
A Zeolitic Imidazolate Framework-Based Antimicrobial Peptide Delivery System with Enhanced Anticancer Activity and Low Systemic Toxicity
Jingwen Jiang, Kaderya Kaysar, Yanzhu Pan, Lijie Xia, Jinyao Li
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Przemysław Gagat, Michał Ostrówka, Anna Duda-Madej, Paweł Mackiewicz
International Journal of Molecular Sciences.2024; 25(19): 10821. CrossRef
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Emerenziana Ottaviano, Elisa Borghi, Laura Giovati, Monica Falleni, Delfina Tosi, Walter Magliani, Giulia Morace, Stefania Conti, Tecla Ciociola
International Journal of Molecular Sciences.2021; 22(20): 10904. CrossRef

Journal Articles

Characterization of a novel dsRNA mycovirus of Trichoderma atroviride NFCF377 reveals a member of “Fusagraviridae” with changes in antifungal activity of the host fungus: Jeesun Chun , Byeonghak Na , Dae-Hyuk Kim; J. Microbiol. 2020;58(12):1046-1053. Published online October 23, 2020; DOI: https://doi.org/10.1007/s12275-020-0380-1

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Abstract

Trichoderma atroviride is a common fungus found in various ecosystems that shows mycoparasitic ability on other fungi. A novel dsRNA virus was isolated from T. atroviride NFCF377 strain and its molecular features were analyzed. The viral genome consists of a single segmented double-stranded RNA and is 9,584 bp in length, with two discontinuous open reading frames (ORF1 and ORF2). A mycoviral structural protein and an RNA-dependent RNA polymerase (RdRp) are encoded by ORF1 and ORF2, respectively, between which is found a canonical shifty heptameric signal motif (AAAAAAC) followed by an RNA pseudoknot. Analysis of sequence similarity and phylogeny showed that it is closely related to members of the proposed family “Fusagraviridae”, with a highest similarity to the Trichoderma atroviride mycovirus 1 (TaMV1). Although the sequence similarity of deduced amino acid to TaMV1 was evident, sequence deviations were distinctive at untranslated regions (UTRs) due to the extended size. Thus, we inferred this dsRNA to be a different strain of Trichoderma atroviride mycovirus 1 (TaMV1-NFCF377). Electron microscopy image exhibited an icosahedral viral particle of 40 nm diameter. Virus-cured isogenic isolates were generated and no differences in growth rate, colony morphology, or conidia production were observed between virus-infected and virus-cured strains. However, culture filtrates of TaMV1- NFCF377-infected strain showed enhanced antifungal activity against the plant pathogen Rhizoctonia solani but not to edible mushroom Pleurotus ostreatus. These results suggested that TaMV1-NFCF377 affected the metabolism of the fungal host to potentiate antifungal compounds against a plant pathogen, but this enhanced antifungal activity appeared to be species-specific.

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Co-infection with two novel mycoviruses affects the biocontrol activity of Trichoderma polysporum
Jeesun Chun, Hae-Ryeong Yoon, Sei-Jin Lee, Dae-Hyuk Kim
Biological Control.2024; 188: 105440. CrossRef
An Outstandingly Rare Occurrence of Mycoviruses in Soil Strains of the Plant-Beneficial Fungi from the Genus Trichoderma and a Novel Polymycoviridae Isolate
Chenchen Liu, Xiliang Jiang, Zhaoyan Tan, Rongqun Wang, Qiaoxia Shang, Hongrui Li, Shujin Xu, Miguel A. Aranda, Beilei Wu, Lea Atanasova
Microbiology Spectrum.2023;[Epub] CrossRef
Sixteen Novel Mycoviruses Containing Positive Single-Stranded RNA, Double-Stranded RNA, and Negative Single-Stranded RNA Genomes Co-Infect a Single Strain of Rhizoctonia zeae
Siwei Li, Zhihao Ma, Xinyi Zhang, Yibo Cai, Chenggui Han, Xuehong Wu
Journal of Fungi.2023; 10(1): 30. CrossRef
Trichoderma – genomes and genomics as treasure troves for research towards biology, biotechnology and agriculture
Miriam Schalamun, Monika Schmoll
Frontiers in Fungal Biology.2022;[Epub] CrossRef
A Transfectable Fusagravirus from a Japanese Strain of Cryphonectria carpinicola with Spherical Particles
Subha Das, Sakae Hisano, Ana Eusebio-Cope, Hideki Kondo, Nobuhiro Suzuki
Viruses.2022; 14(8): 1722. CrossRef
Molecular characteristics of a novel hypovirus from Trichoderma harzianum
Jeesun Chun, Kum-Kang So, Yo-Han Ko, Dae-Hyuk Kim
Archives of Virology.2022; 167(1): 233. CrossRef
Sustainable Management of Medicago sativa for Future Climates: Insect Pests, Endophytes and Multitrophic Interactions in a Complex Environment
Mark R. McNeill, Xiongbing Tu, Eric Altermann, Wu Beilei, Shengjing Shi
Frontiers in Agronomy.2022;[Epub] CrossRef
A New Double-Stranded RNA Mycovirus in Cryphonectria naterciae Is Able to Cross the Species Barrier and Is Deleterious to a New Host
Carolina Cornejo, Sakae Hisano, Helena Bragança, Nobuhiro Suzuki, Daniel Rigling
Journal of Fungi.2021; 7(10): 861. CrossRef

[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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Abstract

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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Genome-wide phenotypic profiling of transcription factors and identification of novel targets to control the virulence of Vibrio vulnificus
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
Nucleic Acids Research.2024;[Epub] CrossRef
Zinc-binding domain mediates pleiotropic functions of Yvh1 in Cryptococcus neoformans
Jae-Hyung Jin, Myung Kyung Choi, Hyun-Soo Cho, Yong-Sun Bahn
Journal of Microbiology.2021; 59(7): 658. CrossRef

Intervention with kimchi microbial community ameliorates obesity by regulating gut microbiota: Seong-Eun Park , Sun Jae Kwon , Kwang-Moon Cho , Seung-Ho Seo , Eun-Ju Kim , Tatsuya Unno , So-Hyeon Bok , Dae-Hun Park , Hong-Seok Son; J. Microbiol. 2020;58(10):859-867. Published online September 2, 2020; DOI: https://doi.org/10.1007/s12275-020-0266-2

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Abstract

The objective of this study was to evaluate anti-obesity effects of kimchi microbial community (KMC) on obesity and gut microbiota using a high fat diet-induced mouse model compared to effects of a single strain. Administration of KMC decreased body weight, adipose tissue, and liver weight gains. Relative content of Muribaculaceae in the gut of the KMCtreated group was higher than that in the high-fat diet (HFD) group whereas relative contents of Akkermansiaceae, Coriobacteriaceae, and Erysipelotrichaceae were lower in KMCtreated group. Metabolic profile of blood was found to change differently according to the administration of KMC and a single strain of Lactobacillus plantarum. Serum metabolites significantly increased in the HFD group but decreased in the KMC-treated group included arachidic acid, stearic acid, fumaric acid, and glucose, suggesting that the administration of KMC could influence energy metabolism. The main genus in KMC was not detected in guts of mice in KMC-treated group. Since the use of KMC has advantages in terms of safety, it has potential to improve gut microbial community for obese people.

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Anti-obesogenic effects of plant natural products: A focus on Korean traditional foods
Gitishree Das, Luis Alfonso Jiménez Ortega, Sandra Gonçalves, J. Basilio Heredia, Maria de Lourdes Gomes Pereira, Anabela Romano, Han-Seung Shin, Jayanta Kumar Patra
Trends in Food Science & Technology.2024; 148: 104470. CrossRef
Anti-obesity activity of lactic acid bacteria-starter-based kimchi in high-fat diet-induced obese mice
Ye-Rang Yun, Min-Sung Kwon, Ho-Jae Lee, Wooje Lee, Ji-Eun Lee, Sung Wook Hong
Journal of Functional Foods.2024; 112: 105966. CrossRef
Effects of Kimchi Intake on the Gut Microbiota and Metabolite Profiles of High-Fat-Induced Obese Rats
Dong-Wook Kim, Quynh-An Nguyen, Saoraya Chanmuang, Sang-Bong Lee, Bo-Min Kim, Hyeon-Jeong Lee, Gwang-Ju Jang, Hyun-Jin Kim
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Jeongmin Cha, Yeon Bee Kim, Seong-Eun Park, Se Hee Lee, Seong Woon Roh, Hong-Seok Son, Tae Woong Whon
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Revisiting the potential anti-obesity effects of kimchi and lactic acid bacteria isolated from kimchi: a lustrum of evidence
Anshul Sharma, Hae-Jeung Lee
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Metabolites of Kimchi Lactic Acid Bacteria, Indole-3-Lactic Acid, Phenyllactic Acid, and Leucic Acid, Inhibit Obesity-Related Inflammation in Human Mesenchymal Stem Cells
Moeun Lee, Daun Kim, Ji Yoon Chang
Journal of Microbiology and Biotechnology.2024; 34(2): 306. CrossRef
Dysregulation of CD177 + neutrophils on intraepithelial lymphocytes exacerbates gut inflammation via decreasing microbiota-derived DMF
Huimin Chen, Xiaohan Wu, Ruicong Sun, Huiying Lu, Ritian Lin, Xiang Gao, Gengfeng Li, Zhongsheng Feng, Ruixin Zhu, Yao Yao, Baisui Feng, Zhanju Liu
Gut Microbes.2023;[Epub] CrossRef
MicroRNA‐29a Compromises Hepatic Adiposis and Gut Dysbiosis in High Fat Diet‐Fed Mice via Downregulating Inflammation
Ya‐Ling Yang, Ying‐Hsien Huang, Feng‐Sheng Wang, Ming‐Chao Tsai, Chien‐Hung Chen, Wei‐Shiung Lian
Molecular Nutrition & Food Research.2023;[Epub] CrossRef
Certain Fermented Foods and Their Possible Health Effects with a Focus on Bioactive Compounds and Microorganisms
Gülsüm Deveci, Elif Çelik, Duygu Ağagündüz, Elena Bartkiene, João Miguel F. Rocha, Fatih Özogul
Fermentation.2023; 9(11): 923. CrossRef
Presence of an ultra-small microbiome in fermented cabbages
Hae-Won Lee, So-Ra Yoon, Yun-Mi Dang, Miran Kang, Kwangho Lee, Ji-Hyung Ha, Jin-Woo Bae
PeerJ.2023; 11: e15680. CrossRef
Immunomodulatory effects of Companilactobacillus allii WiKim39 and Lactococcus lactis WiKim0124 isolated from kimchi on lipopolysaccharide-induced RAW264.7 cells and dextran sulfate sodium-induced colitis in mice
Ye-Rang Yun, Moeun Lee, Jung Hee Song, Eun Ji Choi, Ji Yoon Chang
Journal of Functional Foods.2022; 90: 104969. CrossRef
Interaction between the PNPLA3 Gene and Nutritional Factors on NAFLD Development: The Korean Genome and Epidemiology Study
Sooyeon Oh, Jooho Lee, Sukyung Chun, Ja-Eun Choi, Mi Na Kim, Young Eun Chon, Yeonjung Ha, Seong-Gyu Hwang, Sang-Woon Choi, Kyung-Won Hong
Nutrients.2022; 15(1): 152. CrossRef
Acids produced by lactobacilli inhibit the growth of commensal Lachnospiraceae and S24-7 bacteria
Emma J. E. Brownlie, Danica Chaharlangi, Erin Oi-Yan Wong, Deanna Kim, William Wiley Navarre
Gut Microbes.2022;[Epub] CrossRef
The Role of Gut Microbiota Modulation Strategies in Obesity: The Applications and Mechanisms
Lingyue Shan, Akanksha Tyagi, Umair Shabbir, Xiuqin Chen, Selvakumar Vijayalakshmi, Pianpian Yan, Deog-Hwan Oh
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Fermented rice bran supplementation ameliorates obesity via gut microbiota and metabolism modification in female mice
Shiro Tochitani, Yoshiteru Maehara, Takahiro Kawase, Takamitsu Tsukahara, Ryoichi Shimizu, Taizo Watanabe, Kazuo Maehara, Kenji Asaoka, Hideo Matsuzaki
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Bifidobacterium longum 070103 Fermented Milk Improve Glucose and Lipid Metabolism Disorders by Regulating Gut Microbiota in Mice
Tong Jiang, Ying Li, Longyan Li, Tingting Liang, Mingzhu Du, Lingshuang Yang, Juan Yang, Runshi Yang, Hui Zhao, Moutong Chen, Yu Ding, Jumei Zhang, Juan Wang, Xinqiang Xie, Qingping Wu
Nutrients.2022; 14(19): 4050. CrossRef
What Is the Role of Gut Microbiota in Obesity Prevalence? A Few Words about Gut Microbiota and Its Association with Obesity and Related Diseases
Julita Tokarek, Joanna Gadzinowska, Ewelina Młynarska, Beata Franczyk, Jacek Rysz
Microorganisms.2021; 10(1): 52. CrossRef
Eating Fermented: Health Benefits of LAB-Fermented Foods
Vincenzo Castellone, Elena Bancalari, Josep Rubert, Monica Gatti, Erasmo Neviani, Benedetta Bottari
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Anti-Inflammatory and Immunomodulatory Properties of Fermented Plant Foods
Roghayeh Shahbazi, Farzaneh Sharifzad, Rana Bagheri, Nawal Alsadi, Hamed Yasavoli-Sharahi, Chantal Matar
Nutrients.2021; 13(5): 1516. CrossRef

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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Abstract

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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Basigin binds bacteria and activates Dorsal signaling to promote antibacterial defense in Penaeus vannamei
Linwei Yang, Zi-ang Wang, Yushi Gan, Hongliang Zuo, Hengwei Deng, Shaoping Weng, Jianguo He, Xiaopeng Xu
Fish & Shellfish Immunology.2023; 142: 109123. CrossRef
Clinical protective effects of polyhexamethylene biguanide hydrochloride (PHMB) against Vibrio parahaemolyticus causing translucent post-larvae disease (VTPD) in Penaeus vannamei
Tianchang Jia, Tingting Xu, Jitao Xia, Shuang Liu, Wenqiang Li, Ruidong Xu, Jie Kong, Qingli Zhang
Journal of Invertebrate Pathology.2023; 201: 108002. CrossRef

Inhibitory effects of piceatannol on human cytomegalovirus (hCMV) in vitro: San-Ying Wang , Jing Zhang , Xiao-Gang Xu , Hui-Li Su , Wen-Min Xing , Zhong-Shan Zhang , Wei-Hua Jin , Ji-Huan Dai , Ya-Zhen Wang , Xin-Yue He , Chuan Sun , Jing Yan , Gen-Xiang Mao; J. Microbiol. 2020;58(8):716-723. Published online June 10, 2020; DOI: https://doi.org/10.1007/s12275-020-9528-2

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Abstract

Human cytomegalovirus (hCMV) is a ubiquitous herpesvirus, which results in the establishment of a latent infection that persists throughout the life of the host and can be reactivated when the immunity is low. Currently, there is no vaccine for hCMV infection, and the licensed antiviral drugs mainly target the viral enzymes and have obvious adverse reactions. Thus, it is important to search for compounds with antihCMV properties. The present study aimed to investigate the suppressive effects of piceatannol on hCMV Towne strain infection and the putative underlying mechanisms using human diploid fibroblast WI-38 cells. Piceatannol supplementation prevented the lytic changes induced by hCMV infection in WI-38 cells. Furthermore, piceatannol suppressed the expression of hCMV immediate-early (IE) and early (E) proteins as well as the replication of hCMV DNA in a dose-dependent manner. Moreover, hCMV-induced cellular senescence was suppressed by piceatannol, as shown by a decline in the senescence-associated β-galactosidase (SA-β-Gal) activity and decreased production of intracellular reactive oxygen species (ROS). p16INK4a, a major senescence-associated molecule, was dramatically elevated by current hCMV infection that was attenuated by pre-incubation with piceatannol in a dose-dependent manner. These results demonstrated that piceatannol suppressed the hCMV infection via inhibition of the activation of p16INK4a and cellular senescence induced by hCMV. Together, these findings indicate piceatannol as a novel and potent anti-hCMV agent with the potential to be developed as an effective treatment for chronic hCMV infection.

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Review

Aequoribacter fuscus gen. nov., sp. nov., a new member of the family Halieaceae, isolated from coastal seawater: Shan-Hui Li , Jaeho Song , Ilnam Kang , Juchan Hwang , Jang-Cheon Cho; J. Microbiol. 2020;58(6):463-471. Published online May 27, 2020; DOI: https://doi.org/10.1007/s12275-020-0206-1

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Abstract

A Gram-stain-negative, rod-shaped, obligately aerobic, nonflagellated, and chemoheterotrophic bacterium, designated IMCC3088T, was isolated from coastal seawater of the Yellow Sea. The 16S rRNA gene sequence analysis indicated that this strain belonged to the family Halieaceae which shared the highest sequence similarities with Luminiphilus syltensis NOR5-1BT (94.5%) and Halioglobus pacificus S1-72T (94.5%), followed by 92.3–94.3% sequence similarities with other species within the aforementioned family. Phylogenetic analyses demonstrated that strain IMCC3088T was robustly clustered with Luminiphilus syltensis NOR5-1BT within the family Halieaceae. However, average amino acid identity (AAI), percentages of conserved proteins (POCP), average nucleotide identity (ANI), and alignment fraction (AF) between strain IMCC3088T and Luminiphilus syltensis NOR5-1BT were 54.5%, 47.7%, 68.0%, and 16.5%, respectively, suggesting that they belonged to different genera. Whole-genome sequencing of strain IMCC3088T revealed a 3.1 Mbp genome size with a DNA G + C content of 51.7 mol%. The genome encoded diverse metabolic pathways including sulfur oxidation, phenol degradation, and proteorhodopsin phototrophy. Mono-unsaturated fatty acids were found to be the predominant cellular fatty acid components in the strain. Phosphatidylethanolamine, phosphatidylglycerol, and diphosphatidylglycerol were the primarily identified polar lipids, and ubiquinone-8 was identified as a major respiratory quinone. The taxonomic data collected herein suggested that strain IMCC3088T represented a novel genus and species of the family Halieaceae, for which the name Aequoribacter fuscus gen. nov., sp. nov. is proposed with the type strain (= KACC 15529T = NBRC 108213T).

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Hyeonsu Tak, Miri S. Park, Hyerim Cho, Yeonjung Lim, Jang-Cheon Cho
Journal of Microbiology.2024; 62(9): 739. CrossRef
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