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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
Received February 6, 2025  Accepted April 3, 2025  Published online June 4, 2025  
DOI: https://doi.org/10.71150/jm.2502003    [Epub ahead of print]
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AbstractAbstract 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.

Characterization of novel bacteriophages for effective phage therapy against Vibrio infections in aquaculture
Kira Moon, Sangdon Ryu, Seung Hui Song, Se Won Chun, Nakyeong Lee, Aslan Hwanhwi Lee
J. Microbiol. 2025;63(5):e2502009.   Published online May 27, 2025
DOI: https://doi.org/10.71150/jm.2502009
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AbstractAbstract PDFSupplementary Material

The widespread use of antibiotics in aquaculture has led to the emergence of multidrug-resistant pathogens and environmental concerns, highlighting the need for sustainable, eco-friendly alternatives. In this study, we isolated and characterized three novel bacteriophages from aquaculture effluents in Korean shrimp farms that target the key Vibrio pathogens, Vibrio harveyi, and Vibrio parahaemolyticus. Bacteriophages were isolated through environmental enrichment and serial purification using double-layer agar assays. Transmission electron microscopy revealed that the phages infecting V. harveyi, designated as vB_VhaS-MS01 and vB_VhaS-MS03, exhibited typical Siphoviridae morphology with long contractile tails and icosahedral heads, whereas the phage isolated from V. parahaemolyticus (vB_VpaP-MS02) displayed Podoviridae characteristics with an icosahedral head and short tail.

Whole-genome sequencing produced complete, circularized genomes of 81,710 bp for vB_VhaS-MS01, 81,874 bp for vB_VhaS-MS03, and 76,865 bp for vB_VpaP-MS02, each showing a modular genome organization typical of Caudoviricetes. Genomic and phylogenetic analyses based on the terminase large subunit gene revealed that although vB_VhaS-MS01 and vB_VhaS-MS03 were closely related, vB_VpaP-MS02 exhibited a distinct genomic architecture that reflects its unique morphology and host specificity. Collectively, these comparative analyses demonstrated that all three phages possess genetic sequences markedly different from those of previously reported bacteriophages, thereby establishing their novelty. One-step growth and multiplicity of infection (MOI) experiments demonstrated significant differences in replication kinetics, such as burst size and lytic efficiency, among the phages, with vB_VhaS-MS03 maintaining the most effective bacterial control, even at an MOI of 0.01. Additionally, host range assays showed that vB_VhaS-MS03 possessed a broader spectrum of activity, supporting its potential use as a stand-alone agent or key component of phage cocktails. These findings highlight the potential of region-specific phage therapy as a targeted and sustainable alternative to antibiotics for controlling Vibrio infections in aquaculture.

The key pathways and genes related to oncolytic Newcastle disease virus-induced phenotypic changes in ovarian cancer cells
Wei Song, Yuan Yuan, Fangfang Cao, Huazheng Pan, Yaqing Liu
J. Microbiol. 2025;63(4):e2411018.   Published online April 29, 2025
DOI: https://doi.org/10.71150/jm.2411018
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AbstractAbstract PDFSupplementary Material

The poor prognosis and high recurrence rate of ovarian cancer highlight the urgent need to develop new therapeutic strategies. Oncolytic Newcastle disease virus (NDV) can kill cancer cells directly and regulate innate and adaptive immunity. In this study, ovarian cancer cells infected with or without velogenic NDV-BJ were subjected to a CCK-8 assay for detecting cell proliferation, flow cytometry for detecting the cell cycle and apoptosis, and wound healing and transwell assays for detecting cell migration and invasion. Transcriptomic sequencing was conducted to identify the differentially expressed genes (DEGs). GO and KEGG enrichment analyses were performed to explore the mechanism underlying the oncolytic effect of NDV on ovarian cancer cells. The results showed that infection with NDV inhibited ovarian cancer cell proliferation, migration, and invasion; disrupted the cell cycle; and promoted apoptosis. Compared with those in negative control cells, the numbers of upregulated and downregulated genes in ovarian cancer cells infected with NDV were 1,499 and 2,260, respectively. Thirteen KEGG pathways related to cell growth and death, cell mobility, and signal transduction were significantly enriched. Among these pathways, 48 DEGs, especially SESN2, HLA B/C/E, GADD45B, and RELA, that may be involved in the oncolytic process were screened, and qPCR analysis verified the reliability of the transcription data. This study discovered some key pathways and genes related to oncolytic NDV-induced phenotypic changes in ovarian cancer cells, which will guide our future research directions and help further explore the specific mechanisms by which infection with NDV suppresses ovarian cancer development.

Journal Article
Characterization of Newly Isolated Bacteriophages Targeting Carbapenem-Resistant Klebsiella pneumoniae
Bokyung Kim, Shukho Kim, Yoon-Jung Choi, Minsang Shin, Jungmin Kim
J. Microbiol. 2024;62(12):1133-1153.   Published online December 10, 2024
DOI: https://doi.org/10.1007/s12275-024-00180-7
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AbstractAbstract
Klebsiella pneumoniae, a Gram-negative opportunistic pathogen, is increasingly resistant to carbapenems in clinical settings. This growing problem necessitates the development of alternative antibiotics, with phage therapy being one promising option. In this study, we investigated novel phages targeting carbapenem-resistant Klebsiella pneumoniae (CRKP) and evaluated their lytic capacity against clinical isolates of CRKP. First, 23 CRKP clinical isolates were characterized using Multi-Locus Sequence Typing (MLST), carbapenemase test, string test, and capsule typing. MLST classified the 23 K. pneumoniae isolates into 10 sequence types (STs), with the capsule types divided into nine known and one unknown type. From sewage samples collected from a tertiary hospital, 38 phages were isolated. Phenotypic and genotypic characterization of these phages was performed using Random Amplification of Polymorphic DNA-PCR (RAPD-PCR), transmission electron microscopy (TEM), and whole genome sequencing (WGS) analysis. Host spectrum analysis revealed that each phage selectively lysed strains sharing the same STs as their hosts, indicating ST-specific activity. These phages were subtyped based on their host spectrum and RAPD-PCR, identifying nine and five groups, respectively. Fourteen phages were selected for further analysis using TEM and WGS, revealing 13 Myoviruses and one Podovirus. Genomic analysis grouped the phages into three clusters: one closely related to Alcyoneusvirus, one to Autographiviridae, and others to Straboviridae. Our results showed that the host spectrum of K. pneumoniae-specific phages corresponds to the STs of the host strain. These 14 novel phages also hold promise as valuable resources for phage therapy against CRKP.
Reviews
Adenoviral Vector System: A Comprehensive Overview of Constructions, Therapeutic Applications and Host Responses
Anyeseu Park, Jeong Yoon Lee
J. Microbiol. 2024;62(7):491-509.   Published online July 22, 2024
DOI: https://doi.org/10.1007/s12275-024-00159-4
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AbstractAbstract
Adenoviral vectors are crucial for gene therapy and vaccine development, offering a platform for gene delivery into host cells. Since the discovery of adenoviruses, first-generation vectors with limited capacity have evolved to third-generation vectors flacking viral coding sequences, balancing safety and gene-carrying capacity. The applications of adenoviral vectors for gene therapy and anti-viral treatments have expanded through the use of in vitro ligation and homologous recombination, along with gene editing advancements such as CRISPR-Cas9. Current research aims to maintain the efficacy and safety of adenoviral vectors by addressing challenges such as pre-existing immunity against adenoviral vectors and developing new adenoviral vectors from rare adenovirus types and non-human species. In summary, adenoviral vectors have great potential in gene therapy and vaccine development. Through continuous research and technological advancements, these vectors are expected to lead to the development of safer and more effective treatments.

Citations

Citations to this article as recorded by  
  • Engineering an oncolytic adenoviral platform for precise delivery of antisense peptide nucleic acid to modulate PD-L1 overexpression in cancer cells
    Andrea Patrizia Falanga, Francesca Greco, Monica Terracciano, Stefano D’Errico, Maria Marzano, Sara Feola, Valentina Sepe, Flavia Fontana, Ilaria Piccialli, Vincenzo Cerullo, Hélder A. Santos, Nicola Borbone
    International Journal of Pharmaceutics.2025; 668: 124941.     CrossRef
  • Enhancing precision in cancer treatment: the role of gene therapy and immune modulation in oncology
    Emile Youssef, Brandon Fletcher, Dannelle Palmer
    Frontiers in Medicine.2025;[Epub]     CrossRef
  • Protein-Based Degraders: From Chemical Biology Tools to Neo-Therapeutics
    Lisha Ou, Mekedlawit T. Setegne, Jeandele Elliot, Fangfang Shen, Laura M. K. Dassama
    Chemical Reviews.2025; 125(4): 2120.     CrossRef
  • Intestinal mucus: the unsung hero in the battle against viral gastroenteritis
    Waqar Saleem, Ateeqa Aslam, Mehlayl Tariq, Hans Nauwynck
    Gut Pathogens.2025;[Epub]     CrossRef
  • Chromatin structure and gene transcription of recombinant p53 adenovirus vector within host
    Duo Ning, Yuqing Deng, Simon Zhongyuan Tian
    Frontiers in Molecular Biosciences.2025;[Epub]     CrossRef
  • Multi-level ROS regulation to activate innate and adaptive immune therapies
    Ke-Ke Feng, Cheng-Lei Li, Yi-Fan Tu, Shi-Cheng Tian, Rui Xiong, Bai-Sheng Sa, Jing-Wei Shao
    Chemical Engineering Journal.2025; 515: 163429.     CrossRef
  • Genetically modified cell membrane proteins in tissue engineering and regenerative medicine
    Yilin Bao, Yue Hu, Mengxuan Hao, Qinmeng Zhang, Guoli Yang, Zhiwei Jiang
    Biofabrication.2025; 17(3): 032004.     CrossRef
  • Molecular Engineering of Virus Tropism
    Bo He, Belinda Wilson, Shih-Heng Chen, Kedar Sharma, Erica Scappini, Molly Cook, Robert Petrovich, Negin P. Martin
    International Journal of Molecular Sciences.2024; 25(20): 11094.     CrossRef
  • Antisolvent 3D Printing of Gene-Activated Scaffolds for Bone Regeneration
    Andrey Vyacheslavovich Vasilyev, Irina Alekseevna Nedorubova, Viktoria Olegovna Chernomyrdina, Anastasiia Yurevna Meglei, Viktoriia Pavlovna Basina, Anton Vladimirovich Mironov, Valeriya Sergeevna Kuznetsova, Victoria Alexandrovna Sinelnikova, Olga Anatol
    International Journal of Molecular Sciences.2024; 25(24): 13300.     CrossRef
The Microbiome Matters: Its Impact on Cancer Development and Therapeutic Responses
In‑Young Chung, Jihyun Kim, Ara Koh
J. Microbiol. 2024;62(3):137-152.   Published online April 8, 2024
DOI: https://doi.org/10.1007/s12275-024-00110-7
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AbstractAbstract
In the evolving landscape of cancer research, the human microbiome emerges as a pivotal determinant reshaping our understanding of tumorigenesis and therapeutic responses. Advanced sequencing technologies have uncovered a vibrant microbial community not confned to the gut but thriving within tumor tissues. Comprising bacteria, viruses, and fungi, this diverse microbiota displays distinct signatures across various cancers, with most research primarily focusing on bacteria. The correlations between specifc microbial taxa within diferent cancer types underscore their pivotal roles in driving tumorigenesis and infuencing therapeutic responses, particularly in chemotherapy and immunotherapy. This review amalgamates recent discoveries, emphasizing the translocation of the oral microbiome to the gut as a potential marker for microbiome dysbiosis across diverse cancer types and delves into potential mechanisms contributing to cancer promotion. Furthermore, it highlights the adverse efects of the microbiome on cancer development while exploring its potential in fortifying strategies for cancer prevention and treatment.

Citations

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  • COVID-19, Long COVID, and Gastrointestinal Neoplasms: Exploring the Impact of Gut Microbiota and Oncogenic Interactions
    do Rêgo Amália Cinthia Meneses, Araújo-Filho Irami
    Archives of Cancer Science and Therapy.2024; 8(1): 054.     CrossRef
  • Glycans in the oral bacteria and fungi: Shaping host-microbe interactions and human health
    Xiameng Ren, Min Wang, Jiabao Du, Yu Dai, Liuyi Dang, Zheng Li, Jian Shu
    International Journal of Biological Macromolecules.2024; 282: 136932.     CrossRef
  • A Review of the Relationship between Tumors of the Biliary System and Intestinal Microorganisms
    勇利 李
    Advances in Clinical Medicine.2024; 14(07): 833.     CrossRef
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    Woo Jun Sul
    Journal of Microbiology.2024; 62(3): 135.     CrossRef
Journal Articles
Syntaxin17 Restores Lysosomal Function and Inhibits Pyroptosis Caused by Acinetobacter baumannii
Zhiyuan An, Wenyi Ding
J. Microbiol. 2024;62(4):315-325.   Published online March 7, 2024
DOI: https://doi.org/10.1007/s12275-024-00109-0
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AbstractAbstract
Acinetobacter baumannii (A. baumannii) causes autophagy flux disorder by degrading STX17, resulting in a serious inflammatory response. It remains unclear whether STX17 can alter the inflammatory response process by controlling autolysosome function. This study aimed to explore the role of STX17 in the regulation of pyroptosis induced by A. baumannii. Our findings indicate that overexpression of STX17 enhances autophagosome degradation, increases LAMP1 expression, reduces Cathepsin B release, and improves lysosomal function. Conversely, knockdown of STX17 suppresses autophagosome degradation, reduces LAMP1 expression, augments Cathepsin B release, and accelerates lysosomal dysfunction. In instances of A. baumannii infection, overexpression of STX17 was found to improve lysosomal function and reduce the expression of mature of GSDMD and IL-1β, along with the release of LDH, thus inhibiting pyroptosis caused by A. baumannii. Conversely, knockdown of STX17 led to increased lysosomal dysfunction and further enhanced the expression of mature of GSDMD and IL-1β, and increased the release of LDH, exacerbating pyroptosis induced by A. baumannii. These findings suggest that STX17 regulates pyroptosis induced by A. baumannii by modulating lysosomal function.
Functional analysis of ascP in Aeromonas veronii TH0426 reveals a key role in the regulation of virulence
Yongchao Guan , Meng Zhang , Yingda Wang , Zhongzhuo Liu , Zelin Zhao , Hong Wang , Dingjie An , Aidong Qian , Yuanhuan Kang , Wuwen Sun , Xiaofeng Shan
J. Microbiol. 2022;60(12):1153-1161.   Published online November 10, 2022
DOI: https://doi.org/10.1007/s12275-022-2373-8
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AbstractAbstract
Aeromonas veronii is a pathogen which can induce diseases in humans, animals and aquatic organisms, but its pathogenic mechanism and virulence factors are still elusive. In this study, we successfully constructed a mutant strain (ΔascP) by homologous recombination. The results showed that the deletion of the ascP gene significantly down-regulated the expression of associated effector proteins in A. veronii compared to its wild type. The adhesive and invasive abilities of ΔascP to EPC cells were 0.82-fold lower in contrast to the wild strain. The toxicity of ΔascP to cells was decreased by about 2.91-fold (1 h) and 1.74-fold (2 h). Furthermore, the LD50 of the mutant strain of crucian carp was reduced by 19.94-fold, and the virulence was considerably attenuated. In contrast to the wild strain, the ΔascP content in the liver and spleen was considerably lower. The titers of serum cytokines (IL-8, TNF-α, and IL-1β) in crucian carp after the infection of the ΔascP strain were considerably lower in contrast to the wild strain. Hence, the ascP gene is essential for the etiopathogenesis of A. veronii TH0426.

Citations

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  • Complete genome sequence and genome-wide transposon mutagenesis enable the determination of genes required for sodium hypochlorite tolerance and drug resistance in pathogen Aeromonas veronii GD2019
    Yifan Bu, Chengyu Liu, Yabo Liu, Wensong Yu, Tingjin Lv, Yuanxing Zhang, Qiyao Wang, Yue Ma, Shuai Shao
    Microbiological Research.2024; 284: 127731.     CrossRef
  • Construction of the flagellin F mutant of Vibrio parahaemolyticus and its toxic effects on silver pomfret (Pampus argenteus) cells
    Yang Li, Chao Liu, Yuechen Sun, Ruijun Wang, Choufei Wu, Hanqu Zhao, Liqin Zhang, Dawei Song, Quanxin Gao
    International Journal of Biological Macromolecules.2024; 259: 129395.     CrossRef
  • Ferric uptake regulator (fur) affects the pathogenicity of Aeromonas veronii TH0426 by regulating flagellar assembly and biofilm formation
    Jin-shuo Gong, Ying-da Wang, Yan-long Jiang, Di Zhang, Ya-nan Cai, Xiao-feng Shan, He Gong, Hao Dong
    Aquaculture.2024; 580: 740361.     CrossRef
Review
[MINIREVIEW]Regulation of gene expression by protein lysine acetylation in Salmonella
Hyojeong Koo , Shinae Park , Min-Kyu Kwak , Jung-Shin Lee
J. Microbiol. 2020;58(12):979-987.   Published online November 17, 2020
DOI: https://doi.org/10.1007/s12275-020-0483-8
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AbstractAbstract
Protein lysine acetylation influences many physiological functions, such as gene regulation, metabolism, and disease in eukaryotes. Although little is known about the role of lysine acetylation in bacteria, several reports have proposed its importance in various cellular processes. Here, we discussed the function of the protein lysine acetylation and the post-translational modifications (PTMs) of histone-like proteins in bacteria focusing on Salmonella pathogenicity. The protein lysine residue in Salmonella is acetylated by the Pat-mediated enzymatic pathway or by the acetyl phosphate-mediated non-enzymatic pathway. In Salmonella, the acetylation of lysine 102 and lysine 201 on PhoP inhibits its protein activity and DNAbinding, respectively. Lysine acetylation of the transcriptional regulator, HilD, also inhibits pathogenic gene expression. Moreover, it has been reported that the protein acetylation patterns significantly differ in the drug-resistant and -sensitive Salmonella strains. In addition, nucleoid-associated proteins such as histone-like nucleoid structuring protein (H-NS) are critical for the gene silencing in bacteria, and PTMs in H-NS also affect the gene expression. In this review, we suggest that protein lysine acetylation and the post-translational modifications of H-NS are important factors in understanding the regulation of gene expression responsible for pathogenicity in Salmonella.

Citations

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  • Global Insights into the Lysine Acetylome Reveal the Role of Lysine Acetylation in the Adaptation of Bacillus altitudinis to Salt Stress
    Xujian Li, Shanshan Dai, Shanshan Sun, Dongying Zhao, Hui Li, Junyi Zhang, Jie Ma, Binghai Du, Yanqin Ding
    Journal of Proteome Research.2025; 24(1): 210.     CrossRef
  • The concentration of medium-chain fatty acids in breast milk is influenced by maternal diet and associated with gut microbiota in infants
    Menglu Xi, Ignatius Man-Yau Szeto, Sufang Duan, Ting Li, Yalu Yan, Xia Ma, Ting Sun, Weilian Hung, Celi Yang, Yonghua Zhang, Ai Zhao
    Journal of Functional Foods.2025; 128: 106782.     CrossRef
  • Reversible acetylation of ribosomal protein S1 serves as a smart switch for Salmonella to rapidly adapt to host stress
    Yi-Lin Shen, Tian-Xian Liu, Lei Xu, Bang-Ce Ye, Ying Zhou
    Nucleic Acids Research.2025;[Epub]     CrossRef
  • Bacterial protein acetylation: mechanisms, functions, and methods for study
    Jocelin Rizo, Sergio Encarnación-Guevara
    Frontiers in Cellular and Infection Microbiology.2024;[Epub]     CrossRef
  • Acetyl-proteome profiling revealed the role of lysine acetylation in erythromycin resistance of Staphylococcus aureus
    Miao Feng, Xiaoyu Yi, Yanling Feng, Feng He, Zonghui Xiao, Hailan Yao
    Heliyon.2024; 10(15): e35326.     CrossRef
  • Short-chain fatty acids in breast milk and their relationship with the infant gut microbiota
    Menglu Xi, Yalu Yan, Sufang Duan, Ting Li, Ignatius Man-Yau Szeto, Ai Zhao
    Frontiers in Microbiology.2024;[Epub]     CrossRef
  • Acetylomics reveals an extensive acetylation diversity within Pseudomonas aeruginosa
    Nand Broeckaert, Hannelore Longin, Hanne Hendrix, Jeroen De Smet, Mirita Franz-Wachtel, Boris Maček, Vera van Noort, Rob Lavigne
    microLife.2024;[Epub]     CrossRef
  • Lysine acetylation regulates the AT-rich DNA possession ability of H-NS
    Yabo Liu, Mengqing Zhou, Yifan Bu, Liang Qin, Yuanxing Zhang, Shuai Shao, Qiyao Wang
    Nucleic Acids Research.2024; 52(4): 1645.     CrossRef
  • Acetylation of K188 and K192 inhibits the DNA-binding ability of NarL to regulate Salmonella virulence
    Liu-Qing Zhang, Yi-Lin Shen, Bang-Ce Ye, Ying Zhou, Christopher A. Elkins
    Applied and Environmental Microbiology.2023;[Epub]     CrossRef
  • Acetylome and Succinylome Profiling of Edwardsiella tarda Reveals Key Roles of Both Lysine Acylations in Bacterial Antibiotic Resistance
    Yuying Fu, Lishan Zhang, Huanhuan Song, Junyan Liao, Li Lin, Wenjia Jiang, Xiaoyun Wu, Guibin Wang
    Antibiotics.2022; 11(7): 841.     CrossRef
  • Pat- and Pta-mediated protein acetylation is required for horizontally-acquired virulence gene expression in Salmonella Typhimurium
    Hyojeong Koo, Eunna Choi, Shinae Park, Eun-Jin Lee, Jung-Shin Lee
    Journal of Microbiology.2022; 60(8): 823.     CrossRef
  • Acetylation of CspC Controls the Las Quorum-Sensing System through Translational Regulation of rsaL in Pseudomonas aeruginosa
    Shouyi Li, Xuetao Gong, Liwen Yin, Xiaolei Pan, Yongxin Jin, Fang Bai, Zhihui Cheng, Un-Hwan Ha, Weihui Wu, Pierre Cornelis, Gerald B. Pier
    mBio.2022;[Epub]     CrossRef
  • Trans-acting regulators of ribonuclease activity
    Jaejin Lee, Minho Lee, Kangseok Lee
    Journal of Microbiology.2021; 59(4): 341.     CrossRef
  • Acetylation of the CspA family protein CspC controls the type III secretion system through translational regulation ofexsAinPseudomonas aeruginosa
    Shouyi Li, Yuding Weng, Xiaoxiao Li, Zhuo Yue, Zhouyi Chai, Xinxin Zhang, Xuetao Gong, Xiaolei Pan, Yongxin Jin, Fang Bai, Zhihui Cheng, Weihui Wu
    Nucleic Acids Research.2021; 49(12): 6756.     CrossRef
  • Transcriptional Regulation of the Multiple Resistance Mechanisms in Salmonella—A Review
    Michał Wójcicki, Olga Świder, Kamila J. Daniluk, Paulina Średnicka, Monika Akimowicz, Marek Ł. Roszko, Barbara Sokołowska, Edyta Juszczuk-Kubiak
    Pathogens.2021; 10(7): 801.     CrossRef
Journal Article
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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AbstractAbstract
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.

Citations

Citations to this article as recorded by  
  • 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
Reviews
MINIREVIEW] Development of bacteria as diagnostics and therapeutics by genetic engineering
Daejin Lim , Miryoung Song
J. Microbiol. 2019;57(8):637-643.   Published online May 11, 2019
DOI: https://doi.org/10.1007/s12275-019-9105-8
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AbstractAbstract
Bacteria sense and respond to the environment, communicate, and continuously interact with their surroundings, including host bodies. For more than a century, engineers have been trying to harness the natural ability of bacteria as live biotherapeutics for the treatment of diseases. Recent advances in synthetic biology facilitate the enlargement of the repertoire of genetic parts, tools, and devices that serve as a framework for biotherapy. This review describes bacterial species developed for specific diseases shown in in vitro studies and clinical stages. Here, we focus on drug delivery by programing bacteria and discuss the challenges for safety and improvement.

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MINIREVIEW] Synthetic lethal interaction between oxidative stress response and DNA damage repair in the budding yeast and its application to targeted anticancer therapy
Ji Eun Choi , Woo-Hyun Chung
J. Microbiol. 2019;57(1):9-17.   Published online December 29, 2018
DOI: https://doi.org/10.1007/s12275-019-8475-2
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AbstractAbstract
Synthetic lethality is an extreme form of negative genetic epistasis that arises when a combination of functional deficiency in two or more genes results in cell death, whereas none of the single genetic perturbations are lethal by themselves. This unconventional genetic interaction is a modification of the concept of essentiality that can be exploited for the purpose of targeted cancer therapy. The yeast Saccharomyces cerevisiae has been pivotally used for early large-scale synthetic lethal screens due to its experimental advantages, but recent advances in gene silencing technology have now made direct high-throughput analysis possible in higher organisms. Identification of tumor-specific alterations and characterization of the mechanistic principles underlying synthetic lethal interaction are the key to applying synthetic lethality to clinical cancer treatment by enabling genome-driven oncological research. Here, we provide emerging ideas on the synthetic lethal interactions in budding yeast, particularly between cellular processes responsible for oxidative stress response and DNA damage repair, and discuss how they can be appropriately utilized for context-dependent cancer therapeutics.

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Journal Articles
Photodynamic antimicrobial activity of new porphyrin derivatives against methicillin resistant Staphylococcus aureus
Hüseyin Ta&# , Ay&# , Nermin Topalo&# , Vildan Alptüzün
J. Microbiol. 2018;56(11):828-837.   Published online October 24, 2018
DOI: https://doi.org/10.1007/s12275-018-8244-7
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AbstractAbstract
Methicillin resistant Staphylococcus aureus (MRSA) with multiple drug resistance patterns is frequently isolated from skin and soft tissue infections that are involved in chronic wounds. Today, difficulties in the treatment of MRSA associated infections have led to the development of alternative approaches such as antimicrobial photodynamic therapy. This study aimed to investigate photoinactivation with cationic porphyrin derivative compounds against MRSA in in-vitro conditions. In the study, MRSA clinical isolates with different antibiotic resistance profiles were used. The newly synthesized cationic porphyrin derivatives (PM, PE, PPN, and PPL) were used as photosensitizer, and 655 nm diode laser was used as light source. Photoinactivation experiments were performed by optimizing energy doses and photosensitizer concentrations. In photoinactivation experiments with different energy densities and photosensitizer concentrations, more than 99% reduction was achieved in bacterial cell viability. No decrease in bacterial survival was observed in control groups. It was determined that there was an increase in photoinactivation efficiency by increasing the energy dose. At the energy dose of 150 J/cm2 a survival reduction of over 6.33 log10 was observed in each photosensitizer type. While 200 μM PM concentration was required for this photoinactivation, 12.50 μM was sufficient for PE, PPN, and PPL. In our study, antimicrobial photodynamic therapy performed with cationic porphyrin derivatives was found to have potent antimicrobial efficacy against multidrug resistant S. aureus which is frequently isolated from wound infections.

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    Ticiane da Rosa Pinheiro, Carolina Gonzalez Urquhart, Thiago Vargas Acunha, Roberto Christ Vianna Santos, Bernardo Almeida Iglesias
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    Jing Shen, Qingfeng Liang, Guanyu Su, Yang Zhang, Zhiqun Wang, Christophe Baudouin, Antoine Labbé
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Anti protein A antibody-gold nanorods conjugate: a targeting agent for selective killing of methicillin resistant Staphylococcus aureus using photothermal therapy method
Rasoul Shokri , Mojtaba Salouti , Rahim Sorouri Zanjani
J. Microbiol. 2015;53(2):116-121.   Published online January 28, 2015
DOI: https://doi.org/10.1007/s12275-015-4519-4
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AbstractAbstract
The high prevalence of methicillin resistant Staphylococcus aureus (MRSA) and developing resistance to antibiotics requires new approaches for treatment of infectious diseases due to this bacterium. In this study, we developed a targeting agent for selective killing of MRSA using photothermal therapy method based on anti protein A antibody and gold nanorods (GNRs). Polystyrene sulfonate (PSS) coated GNRs were conjugated with anti protein A antibody. The FT-IR and UV-vis analyses approved the formation of anti protein A antibody-gold nanorods conjugate. In vitro study of photothermal therapy showed 82% reduction in the MRSA cells viability which was significantly greater than the ablation effect of free GNRs and laser alone. Significant accumulation of anti protein A antibody-GNRs in the infected muscle in comparison with normal muscle approved the targeting ability of new agent. In vivo study of photothermal therapy resulted in a significant reduction (73%) in the bacterial cells viability in the infected mouse model. These results demonstrated the ability of anti protein A antibody-GNRs conjugate in combination with NIR laser energy for selective killing of MRSA in mouse model.

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Research Support, Non-U.S. Gov't
Neutralization Potential of the Plasma of HIV-1 Infected Indian Patients in the Context of Anti-V3 Antibody Content and Antiretroviral Theraphy
Alok Kumar Choudhary , Raiees Andrabi , Somi Sankaran Prakash , Rajesh Kumar , Shubhasree Dutta Choudhury Choudhury , Naveet Wig , Ashutosh Biswas , Anjali Hazarika , Kalpana Luthra
J. Microbiol. 2012;50(1):149-154.   Published online February 27, 2012
DOI: https://doi.org/10.1007/s12275-012-1246-y
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AbstractAbstract
We assessed the anti-V3 antibody content and viral neutralization potential of the plasma of 63 HIV-1-infected patients (antiretroviral naïve=39, treated=24) against four primary isolates (PIs) of clade C and a tier 1 clade B isolate SF162. Depletion and inhibition of anti-V3 antibodies in the plasma of five patients with high titers of anti-V3 antibodies led to modest change in the neutralization percentage against two PIs (range 0–21%). The plasma of antiretroviral-treated patients exhibited higher neutralization potential than that of the drug-naïve plasmas against the four PIs tested which was further evidenced by a follow-up study.

Journal of Microbiology : Journal of Microbiology
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