Journal of Microbiology

Journal Articles

Description of Streptococcus dentalis sp. nov., Streptococcus gingivalis sp. nov., and Streptococcus lingualis sp. nov., Isolated from Human Oral Cavities: Beom-Jin Goo, Young-Sik Choi, Do-Hun Gim, Su-Won Jeong, Jee-Won Choi, Hojun Sung, Jae-Yun Lee, Jin-Woo Bae; J. Microbiol. 2024;62(11):973-983. Published online November 12, 2024; DOI: https://doi.org/10.1007/s12275-024-00178-1

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Abstract: We isolated three novel strains, S1^T, S2^T, and S5^T, from human oral cavities and identified them as distinct novel species. All these strains are facultatively anaerobic, Gram-stain-positive, and non-flagellated bacteria. Their optimal growth conditions for these strains were observed in Columbia broth (CB) at 37 °C, pH 7.0, and in the absence of NaCl. Phylogenetic analyses, employing the 16S rRNA gene and whole-genome sequencing, confirmed that all three strains belong to the genus Streptococcus. The 16S rRNA gene sequences of strains S1^T, S2^T, and S5^T showed the highest similarities to Streptococcus parasanguinis, 98.57%, 99.05%, and 99.05%, respectively, and the orthologous average nucleotide identity (OrthoANI) values between the three strains and S. parasanguinis were 93.82%, 93.67%, and 94.04%, respectively. The pairwise OrthoANI values between the novel strains were 94.37% (S1^T-S2^T), 95.03% (S2^T-S5^T), and 94.71% (S1^T-S5^T). All strains had C_20:1 ω9c and summed feature 8 (C_18:1 ω7c and/or C_18:1 ω6c) as major cellular fatty acids. Additionally, diphosphatidylglycerol (DPG) and hydroxyphosphatidylethanolamine (OH-PE) were identified as major polar lipids. Menaquinone was undetected in all strains. The results from the phylogenetic, phenotypic, chemotaxonomic, and genotypic analyses collectively indicated that strains S1^T, S2^T, and S5^T represent three distinct novel species within the genus Streptococcus, and we propose the names Streptococcus dentalis sp. nov. for strain S1^T (= KCTC 21234^T = JCM 36526^T), Streptococcus gingivalis sp. nov. for strain S2^T (= KCTC 21235^T = JCM 36527^T), and Streptococcus lingualis sp. nov. for strain S5^T (= KCTC 21236^T = JCM 36528^T).

Genomic Characterization and Comparative Analysis of Streptococcus zhangguiae sp. nov. Isolated from the Respiratory Tract of Marmota Himalayana: Caixin Yang, Jiajia Ma, Huimin Zhou, Jing Yang, Ji Pu, Shan Lu, Dong Jin, Liyun Liu, Kui Dong, Jianguo Xu; J. Microbiol. 2024;62(11):951-963. Published online November 4, 2024; DOI: https://doi.org/10.1007/s12275-024-00177-2

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Abstract: Two Gram-stain-positive, oxidase-negative, non-motile, facultative anaerobic, α-hemolytic, coccus-shaped bacteria (zg-86^T and zg-70) were isolated from the respiratory tracts of marmots (Marmota Himalayana) on the Qinghai-Tibet Plateau of China. Phylogenetic analysis of the 16S rRNA gene and 545 core genes revealed that these two strains belong to the Streptococcus genus. These strains were most closely related to Streptococcus respiraculi HTS25^T, Streptococcus cuniculi CCUG 65085^T, and Streptococcus marmotae HTS5^T. The average nucleotide identity (ANI) and digital DNA‒DNA hybridization (dDDH) were below the threshold for species delineation. The predominant cellular fatty acids (CFAs) in this novel species were C_16:0, C_18:0, and C_18:1ω9c, whereas the primary polar lipids were phosphatidylglycerol (PG), phosphatidylethanolamine (PE) and an unknown phosphoglycolipid (PGL). The optimal growth conditions for the strains were 37 °C, pH 7.0, and 0.5% (w/v) NaCl on brain-heart infusion (BHI) agar supplemented with 5% defibrinated sheep blood. Comparative genomics analyses revealed the potential pathogenicity of strain zg-86^T through comparisons with suis subclade strains in terms of virulence factors, pathogen-host interactions (PHIs) and mobile genetic factors (MGEs). Based on the phenotypic characteristics and phylogenetic analyses, we propose that these two isolates represent novel species in the genus Streptococcus, for which the names Streptococcus zhangguiae sp. nov. (the type strain zg-86^T=GDMCC 1.1758^T=JCM 34273^T) is proposed.

Review

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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Abstract

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

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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
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

Journal Articles

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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Abstract

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).

Citations

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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; : 132248. 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
Aharon Oren, Markus Göker
International Journal of Systematic and Evolutionary Microbiology .2024;[Epub] CrossRef

NEDD4 Regulated Pyroptosis Occurred from Co‑infection between Influenza A Virus and Streptococcus pneumoniae: Jiangzhou You , Linlin Zhou , Xudong San , Hailing Li , Mingyuan Li , Baoning Wang; J. Microbiol. 2023;61(8):777-789. Published online October 4, 2023; DOI: https://doi.org/10.1007/s12275-023-00076-y

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Abstract

Co-infection of respiratory tract viruses and bacteria often result in excess mortality, especially pneumonia caused by influenza viruses and Streptococcus pneumoniae. However, the synergistic mechanisms remain poorly understood. Therefore, it is necessary to develop a clearer understanding of the molecular basis of the interaction between influenza virus and Streptococcus pneumonia. Here, we developed the BALB/c mouse model and the A549 cell model to investigate inflammation and pyroptotic cell death during co-infection. Co-infection significantly activated the NLRP3 inflammasome and induced pyroptotic cell death, correlated with excess mortality. The E3 ubiquitin ligase NEDD4 interacted with both NLRP3 and GSDMD, the executor of pyroptosis. NEDD4 negatively regulated NLRP3 while positively regulating GSDMD, thereby modulating inflammation and pyroptotic cell death. Our findings suggest that NEDD4 may play a crucial role in regulating the GSDMD-mediated pyroptosis signaling pathway. Targeting NEDD4 represents a promising approach to mitigate excess mortality during influenza pandemics by suppressing synergistic inflammation during co-infection of influenza A virus and Streptococcus pneumoniae.

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Yinqin Qingfei granules alleviate Mycoplasma pneumoniae pneumonia via inhibiting NLRP3 inflammasome-mediated macrophage pyroptosis
Zhe Song, Chengen Han, Guangzhi Luo, Guangyuan Jia, Xiao Wang, Baoqing Zhang
Frontiers in Pharmacology.2024;[Epub] CrossRef
Overexpression of DTX1 inhibits D-GalN/TNF-α-induced pyroptosis and inflammation in hepatocytes by regulating NLRP3 ubiquitination
Mingshui Liu, Jing Gu, Li Chen, Wei Sun, Xiaoping Huang, Jianhe Gan
Toxicology Research.2024;[Epub] CrossRef
NLRP3 Inflammasomes: Dual Function in Infectious Diseases
Yanbo Li, Rui Qiang, Zhengmin Cao, Qingjuan Wu, Jiuchong Wang, Wenliang Lyu
The Journal of Immunology.2024; 213(4): 407. CrossRef

Lactobacillus rhamnosus KBL2290 Ameliorates Gut Inflammation in a Mouse Model of Dextran Sulfate Sodium‑Induced Colitis: Woon-ki Kim , Sung-gyu Min , Heeun Kwon , SungJun Park , Min Jung Jo , GwangPyo Ko; J. Microbiol. 2023;61(7):673-682. Published online June 14, 2023; DOI: https://doi.org/10.1007/s12275-023-00061-5

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Abstract

Ulcerative colitis, a major form of inflammatory bowel disease (IBD) associated with chronic colonic inflammation, may be induced via overreactive innate and adaptive immune responses. Restoration of gut microbiota abundance and diversity is important to control the pathogenesis. Lactobacillus spp., well-known probiotics, ameliorate IBD symptoms via various mechanisms, including modulation of cytokine production, restoration of gut tight junction activity and normal mucosal thickness, and alterations in the gut microbiota. Here, we studied the effects of oral administration of Lactobacillus rhamnosus (L. rhamnosus) KBL2290 from the feces of a healthy Korean individual to mice with DSS-induced colitis. Compared to the dextran sulfate sodium (DSS) + phosphate-buffered saline control group, the DSS + L. rhamnosus KBL2290 group evidenced significant improvements in colitis symptoms, including restoration of body weight and colon length, and decreases in the disease activity and histological scores, particularly reduced levels of pro-inflammatory cytokines and an elevated level of anti-inflammatory interleukin-10. Lactobacillus rhamnosus KBL2290 modulated the levels of mRNAs encoding chemokines and markers of inflammation; increased regulatory T cell numbers; and restored tight junction activity in the mouse colon. The relative abundances of genera Akkermansia, Lactococcus, Bilophila, and Prevotella increased significantly, as did the levels of butyrate and propionate (the major short-chain fatty acids). Therefore, oral L. rhamnosus KBL2290 may be a useful novel probiotic.

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Dietary supplementation with proanthocyanidins and rutin alleviates the symptoms of type 2 diabetes mice and regulates gut microbiota
Yue Gao, Binbin Huang, Yunyi Qin, Bing Qiao, Mengfei Ren, Liqing Cao, Yan Zhang, Maozhen Han
Frontiers in Microbiology.2025;[Epub] CrossRef
Probiotics: Shaping the gut immunological responses
Eirini Filidou, Leonidas Kandilogiannakis, Anne Shrewsbury, George Kolios, Katerina Kotzampassi
World Journal of Gastroenterology.2024; 30(15): 2096. CrossRef
Synergistic effects of probiotics with soy protein alleviate ulcerative colitis by repairing the intestinal barrier and regulating intestinal flora
Rentang Zhao, Bingqing Shang, Luyan Sun, Suyuan Lv, Guolong Liu, Qiu Wu, Yue Geng
Journal of Functional Foods.2024; 122: 106514. CrossRef
Lactobacillus gasseri BNR17 and Limosilactobacillus fermentum ABF21069 Ameliorate High Sucrose-Induced Obesity and Fatty Liver via Exopolysaccharide Production and β-oxidation
Yu Mi Jo, Yoon Ji Son, Seul-Ah Kim, Gyu Min Lee, Chang Won Ahn, Han-Oh Park, Ji-Hyun Yun
Journal of Microbiology.2024; 62(10): 907. CrossRef
Immune-Stimulating Potential of Lacticaseibacillus rhamnosus LM1019 in RAW 264.7 Cells and Immunosuppressed Mice Induced by Cyclophosphamide
Yeji You, Sung-Hwan Kim, Chul-Hong Kim, In-Hwan Kim, YoungSup Shin, Tae-Rahk Kim, Minn Sohn, Jeseong Park
Microorganisms.2023; 11(9): 2312. CrossRef

Negative regulation of the acsA1 gene encoding the major acetyl-CoA synthetase by cAMP receptor protein in Mycobacterium smegmatis: Eon-Min Ko , Yuna Oh , Jeong-Il Oh; J. Microbiol. 2022;60(12):1139-1152. Published online October 24, 2022; DOI: https://doi.org/10.1007/s12275-022-2347-x

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Abstract

Acetyl-CoA synthetase (ACS) is the enzyme that irreversibly catalyzes the synthesis of acetyl-CoA from acetate, CoA-SH, and ATP via acetyl-AMP as an intermediate. In this study, we demonstrated that AcsA1 (MSMEG_6179) is the predominantly expressed ACS among four ACSs (MSMEG_6179, MSMEG_0718, MSMEG_3986, and MSMEG_5650) found in Mycobacterium smegmatis and that a deletion mutation of acsA1 in M. smegmatis led to its compromised growth on acetate as the sole carbon source. Expression of acsA1 was demonstrated to be induced during growth on acetate as the sole carbon source. The acsA1 gene was shown to be negatively regulated by Crp1 (MSMEG_6189) that is the major cAMP receptor protein (CRP) in M. smegmatis. Using DNase I footprinting analysis and site-directed mutagenesis, a CRPbinding site (GGTGA-N6-TCACA) was identified in the upstream regulatory region of acsA1, which is important for repression of acsA1 expression. We also demonstrated that inhibition of the respiratory electron transport chain by inactivation of the major terminal oxidase, aa3 cytochrome c oxidase, led to a decrease in acsA1 expression probably through the activation of CRP. In conclusion, AcsA1 is the major ACS in M. smegmatis and its gene is under the negative regulation of Crp1, which contributes to some extent to the induction of acsA1 expression under acetate conditions. The growth of M. smegmatis is severely impaired on acetate as the sole carbon source under respiration-inhibitory conditions.

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Inhibitory activity and antioomycete mechanism of citral against Phytophthora capsici
Kaidi Cui, Yinan Wang, Mengke Wang, Te Zhao, Fulong Zhang, Leiming He, Lin Zhou
Pesticide Biochemistry and Physiology.2024; 204: 106067. CrossRef
Mycobacterial Regulatory Systems Involved in the Regulation of Gene Expression Under Respiration-Inhibitory Conditions
Yuna Oh, Ha-Na Lee, Eon-Min Ko, Ji-A Jeong, Sae Woong Park, Jeong-Il Oh
Journal of Microbiology.2023; 61(3): 297. CrossRef

Cytophaga hutchinsonii chu_2177, encoding the O-antigen ligase, is essential for cellulose degradation: Yahong Tan , Wenxia Song , Lijuan Gao , Weican Zhang , Xuemei Lu; J. Microbiol. 2022;60(4):364-374. Published online January 7, 2022; DOI: https://doi.org/10.1007/s12275-022-1531-3

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Abstract

Cytophaga hutchinsonii can efficiently degrade crystalline cellulose, in which the cell surface cellulases secreted by the type IX secretion system (T9SS) play important roles, but the degradation mechanism remains unclear, and the anchor mechanism of cellulases on the outer membrane in C. hutchinsonii has not been studied. Here, chu_2177 was identified by transposon mutagenesis and was proved to be indispensable for cellulose utilization in C. hutchinsonii. Disruption of chu_2177 resulted in O-antigen deficiency and chu_ 177 could confer O-antigen ligase activity upon an Escherichia coli waal mutant, indicating that chu_2177 encoded the Ontigen ligase. Moreover, deletion of chu_2177 caused defects in cellulose utilization, cell motility, biofilm formation, and stress resistance. Further study showed that the endoglucanase activity was markedly decreased in the outer membrane but was increased in the culture fluid without chu_2177. Western blot proved that endoglucanase CHU_1336 was not located on the outer membrane but was released in the culture fluid of the Δ2177 mutant. Further proteomics analysis showed that many cargo proteins of T9SS were missing in the outer membrane of the Δ2177 mutant. Our study revealed that the deletion of chu_2177 affected the localization of many T9SS cargo proteins including cellulases on the outer membrane of C. hutchinsonii.

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Screening and genome-wide analysis of lignocellulose-degrading bacteria from humic soil
Tianjiao Zhang, Shuli Wei, Yajie Liu, Chao Cheng, Jie Ma, Linfang Yue, Yanrong Gao, Yuchen Cheng, Yongfeng Ren, Shaofeng Su, Xiaoqing Zhao, Zhanyuan Lu
Frontiers in Microbiology.2023;[Epub] CrossRef
The type IX secretion system: Insights into its function and connection to glycosylation in Cytophaga hutchinsonii
Wenxia Song, Xueke Zhuang, Yahong Tan, Qingsheng Qi, Xuemei Lu
Engineering Microbiology.2022; 2(3): 100038. CrossRef

Antibacterial pathway of cefquinome against Staphylococcus aureus based on label-free quantitative proteomics analysis: Linglin Gao , Hao Zhu , Yun Chen , Yuhui Yang; J. Microbiol. 2021;59(12):1112-1124. Published online November 9, 2021; DOI: https://doi.org/10.1007/s12275-021-1201-x

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Abstract

Cefquinome (CEQ) is a novel β-lactam antibiotic that exhibits excellent antibacterial activity against Staphylococcus aureus. However, the bacterial protein targets of CEQ are unclear. To evaluate the relationship between the pharmacokinetic/ pharmacodynamic (PK/PD) parameters of CEQ and strains with varying degrees of resistance and to elucidate bacterial protein responses to CEQ treatment, label-free quantitative proteomics analysis was conducted. The sensitive S. aureus ATCC6538 and the resistant 2MIC and 8MIC were tested for differentially expressed proteins. An in vitro model was treated with different concentrations of CEQ (3, 5, or 10 μg/ml) with different terminal half-lives (2.5 or 5 h) at different intervals (12 or 24 h). Differentially expressed proteins were evaluated using Gene Ontology analysis followed by KEGG pathway enrichment analysis and STRING network analysis. RT-qPCR was performed to validate the differentially expressed proteins at the molecular level. The results showed that the degree of resistance increased in a cumulative manner and increased gradually with the extension of administration time. The resistant strain would not have appeared in the model only if %T > mutant prevention concentration ≥ 50%. The expression of 45 proteins significantly changed following CEQ treatment, among which 42 proteins were obviously upregulated and 3 were downregulated. GO analysis revealed that the differentially expressed proteins were mainly present on cells and the cell membrane, participated in metabolic and intracellular processes, and had catalytic and binding activities. The RPSO, SDHB, CITZ, ADK, and SAOUHSC 00113 genes in S. aureus may play important roles in the development of resistance to CEQ. These results provided important reference candidate proteins as targets for overcoming S. aureus resistance to CEQ.

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Detection of Antibiotic Resistance in Feline-Origin ESBL Escherichia coli from Different Areas of China and the Resistance Elimination of Garlic Oil to Cefquinome on ESBL E. coli
Yin-Chao Tong, Peng-Cheng Li, Yang Yang, Qing-Yi Lin, Jin-Tong Liu, Yi-Nuo Gao, Yi-Ning Zhang, Shuo Jin, Su-Zhu Qing, Fu-Shan Xing, Yun-Peng Fan, Ying-Qiu Liu, Wei-Ling Wang, Wei-Min Zhang, Wu-Ren Ma
International Journal of Molecular Sciences.2023; 24(11): 9627. CrossRef

Review

Recent advances in the development of β-lactamase inhibitors: Shivakumar S. Jalde , Hyun Kyung Choi; J. Microbiol. 2020;58(8):633-647. Published online July 27, 2020; DOI: https://doi.org/10.1007/s12275-020-0285-z

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Abstract

β-Lactam antibiotics are the most commonly prescribed antibiotics worldwide; however, antimicrobial resistance (AMR) is a global challenge. The β-lactam resistance in Gram-negative bacteria is due to the production of β-lactamases, including extended-spectrum β-lactamases, metallo-β-lactamases, and carbapenem-hydrolyzing class D β-lactamases. To restore the efficacy of BLAs, the most successful strategy is to use them in combination with β-lactamase inhibitors (BLI). Here we review the medically relevant β-lactamase families and penicillins, diazabicyclooctanes, boronic acids, and novel chemical scaffold-based BLIs, in particular approved and under clinical development.

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Yoshiki Kato, Toshio Yamaguchi, Haruka Nakagawa-Kamura, Yoshikazu Ishii, Akiko Shimizu-Ibuka, Pablo Power
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Jessica L. Ortega-Balleza, Lenci K. Vázquez-Jiménez, Eyra Ortiz-Pérez, Guadalupe Avalos-Navarro, Alma D. Paz-González, Edgar E. Lara-Ramírez, Gildardo Rivera
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Hao Chang, Renzhong Qiao, Chao Li
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Ying Luo, Taha Majid Mahmood Sheikh, Xin Li, YuMeng Yuan, Fen Yao, Meimei Wang, Xiaoling Guo, Jilong Wu, Muhammad Shafiq, Qingdong Xie, Xiaoyang Jiao
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Shida Ji, Bin Liu, Jing Han, Ning Kong, Yongfeng Yang, Yucheng Wang, Zhihua Liu
Fungal Genetics and Biology.2024; 172: 103889. CrossRef
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Darren J. Bentley
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Clyde A. Smith, Nichole K. Stewart, Marta Toth, Pojun Quan, John D. Buynak, Sergei B. Vakulenko
ACS Infectious Diseases.2023; 9(5): 1123. CrossRef
Phenotypes, genotypes and breakpoints: an assessment of β-lactam/β-lactamase inhibitor combinations against OXA-48
Tomefa E Asempa, Abigail K Kois, Christian M Gill, David P Nicolau
Journal of Antimicrobial Chemotherapy.2023; 78(3): 636. CrossRef
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Yushuang Wu, Shudi Huang, Donglai Zhang, Hua Ji, Yongqing Ni, Xueling Zhang, Juan Dong, Baokun Li
Foodborne Pathogens and Disease.2023; 20(7): 270. CrossRef
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Journal Articles

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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Abstract

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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Superantigen SpeA attenuates the biofilm forming capacity of Streptococcus pyogenes: Anshu Babbar , Israel Barrantes , Dietmar H. Pieper , Andreas Itzek; J. Microbiol. 2019;57(7):626-636. Published online June 27, 2019; DOI: https://doi.org/10.1007/s12275-019-8648-z

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Abstract

Beta haemolytic Group A streptococcus (GAS) or Streptococcus pyogenes are strict human pathogens responsible for mild to severe fatal invasive infections. Even with enormous number of reports exploring the role of S. pyogenes exotoxins in its pathogenesis, inadequate knowledge on the biofilm process and the potential role of exotoxins in bacterial dissemination from matured biofilms has been a hindrance in development of effective and targeted treatments. Therefore, the present study was aimed in investigating the uncharted role of these exotoxins in biofilm process. Through our study the putative role of ciaRH in the SpeA dependent ablation of biofilm formation could be speculated and thus helping in bacterial dissemination. The seed-dispersal effect of SpeA was time and concentration dependent and seen to be consistent within various streptococcal species. Transcriptome analysis of SpeA treated S. pyogenes biofilms revealed the involvement of many transcriptional regulators (ciaRH) and response genes (luxS, shr, shp, SPy_0572), hinting towards specific mechanisms underlying the dispersal effect by SpeA. This finding opens up a discussion towards understanding a new mechanism involved in the pathogenesis of Streptococcus pyogenes and might help in understanding the bacterial infections in a better way.

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Pathomolecular epidemiology, antimicrobial resistance, and virulence genes of Streptococcus dysgalactiae subsp. equisimilis isolates from slaughtered pigs in India
Sagar M Patel, Monalisa Sahoo, Jigarji Chaturji Thakor, Dinesh Murali, Pradeep Kumar, Rajendra Singh, Karam Pal Singh, G Saikumar, Chandrakanta Jana, Shailesh Kumar Patel, Akash B Mote, Ravichandran Karthikeyan, Rajesh Kumar Vandre, Jitendra Kumar Biswal,
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The involvement of CiaR and the CiaR-regulated serine protease HtrA in thermal adaptation of Streptococcus pneumoniae
Ozcan Gazioglu, Medhanie Habtom, Peter W. Andrew, Hasan Yesilkaya
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An Inventory of CiaR-Dependent Small Regulatory RNAs in Streptococci
Nancy Jabbour, Marie-Frédérique Lartigue
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Microbial biofilms and some aspects of anti-inflammatory drug use
T. M. Rumynska, A. R. Hural, Y. T. Konechnyi, R. B. Vynnytska, A. V. Lozynskyi, Y. T. Salyha, O. P. Korniychuk, R.B. Lesyk
Biopolymers and Cell.2021; 37(4): 247. CrossRef
A current review of pathogenicity determinants of Streptococcus sp.
P.S. Lannes‐Costa, J.S.S. Oliveira, G. Silva Santos, P.E. Nagao
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Gilbert Donders, Peter Greenhouse, Francesca Donders, Ulrike Engel, Jorma Paavonen, Werner Mendling
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Deciphering Streptococcal Biofilms
Puja Yadav, Shalini Verma, Richard Bauer, Monika Kumari, Meenakshi Dua, Atul Kumar Johri, Vikas Yadav, Barbara Spellerberg
Microorganisms.2020; 8(11): 1835. CrossRef
Dissecting Streptococcus pyogenes interaction with human
Munazza Ijaz, Fuad Ameen, Yaseen Abd Alfoteih, Saba Shamim, Wafa A. Alshehri, Ghulam Murtaza
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Transcriptomic and proteomic profiling revealed global changes in Streptococcus thermophilus during pH-controlled batch fermentations: Yali Qiao , Cong Leng , Gefei Liu , Yanjiao Zhang , Xuepeng Lv , Hongyu Chen , Jiahui Sun , Zhen Feng; J. Microbiol. 2019;57(9):769-780. Published online June 14, 2019; DOI: https://doi.org/10.1007/s12275-019-8604-y

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Abstract

Understanding global changes of physiological processes at the molecular level during the growth of Streptococcus thermophilus is essential for the rational design of cultivation media and the optimization of bioprocesses. Transcriptomics and proteomics were combined to investigate the global changes at the transcript and protein level during the growth of S. thermophilus. The expression of 1396 genes (FDR ≤ 0.001) and 876 proteins (P < 0.05) changed significantly over time. The most remarkable growth phase dependent changes occurred in the late-lag phase and were related to heterofermentation, glycolysis, peptidoglycan biosynthesis, conversion between amino acids and stress response. The present
results
could provide theoretical guidance for high-cell-density culture, help design cultivation media, and help attain a high biomass of S. thermophilus.

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Alaa T. Qumsani
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Multi-omics analysis for mechanistic understanding of microbial-mediated synthesis of silver nanoparticles
Wenjing Liu, Aofan Wang, Xitong Li, Jishi Wang, Xiaowei Liu, Yujie Zhao, Zeying He, Jingjing Du
Chemical Engineering Journal.2024; 497: 154410. CrossRef
Arginine deiminase pathway of Tetragenococcus halophilus contributes to improve the acid tolerance of lactic acid bacteria
Huan Yang, Dingkang Wang, Yao Jin, Rongqing Zhou, Jun Huang, Chongde Wu
Food Microbiology.2023; 113: 104281. CrossRef
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Shengtong Wan, Xin Liu, Wentao Sun, Bo Lv, Chun Li
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Chandraprakash Yamini, Govindasamy Sharmila, Chandrasekaran Muthukumaran, Kumar Pavithran, Narasimhan Manojkumar
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Comparative transcriptome analysis for the biosynthesis of antioxidant exopolysaccharide in Streptococcus thermophilusCS6
Yang Zhou, Yanhua Cui, Xiaojun Qu
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Genome-Scale Metabolic Modeling Combined with Transcriptome Profiling Provides Mechanistic Understanding of Streptococcus thermophilus CH8 Metabolism
Martin H. Rau, Paula Gaspar, Maiken Lund Jensen, Asger Geppel, Ana Rute Neves, Ahmad A. Zeidan, Danilo Ercolini
Applied and Environmental Microbiology.2022;[Epub] CrossRef
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Rubén Agregán, Noemí Echegaray, Asad Nawaz, Christophe Hano, Gholamreza Gohari, Mirian Pateiro, José M. Lorenzo
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Milk Fermentation by Lacticaseibacillus rhamnosus GG and Streptococcus thermophilus SY-102: Proteolytic Profile and ACE-Inhibitory Activity
Jessica Lizbeth Sebastián-Nicolas, Elizabeth Contreras-López, Juan Ramírez-Godínez, Alma Elizabeth Cruz-Guerrero, Gabriela Mariana Rodríguez-Serrano, Javier Añorve-Morga, Judith Jaimez-Ordaz, Araceli Castañeda-Ovando, Emmanuel Pérez-Escalante, Alexis Ayal
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Metabolic Pathway Profiling in Intracellular and Extracellular Environments of Streptococcus thermophilus During pH-Controlled Batch Fermentations
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Gamma-irradiation of Streptococcus pneumoniae for the use as an immunogenic whole cell vaccine: Min Yong Jwa , Soyoung Jeong , Eun Byeol Ko , A Reum Kim , Hyun Young Kim , Sun Kyung Kim , Ho Seong Seo , Cheol-Heui Yun , Seung Hyun Han; J. Microbiol. 2018;56(8):579-585. Published online July 25, 2018; DOI: https://doi.org/10.1007/s12275-018-8347-1

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Abstract

Streptococcus pneumoniae is a major respiratory pathogen that causes millions of deaths worldwide. Although subunit vaccines formulated with the capsular polysaccharides or their protein conjugates are currently-available, low-cost vaccines with wide serotype coverage still remain to be developed, especially for developing countries. Recently, gamma- irradiation has been considered as an effective inactivation
method
to prepare S. pneumoniae vaccine candidate. In this study, we investigated the immunogenicity and protective immunity of gamma-irradiated S. pneumoniae (r-SP), by comparing with heat-inactivated S. pneumoniae (h-SP) and formalin-inactivated S. pneumoniae (f-SP), both of which were made by traditional inactivation methods. Intranasal immunization of C57BL/6 mice with r-SP in combination with cholera toxin as an adjuvant enhanced S. pneumoniaespecific antibodies on the airway mucosal surface and in sera more potently than that with h-SP or f-SP under the same conditions. In addition, sera from mice immunized with r- SP potently induced opsonophagocytic killing activity more effectively than those of h-SP or f-SP, implying that r-SP could induce protective antibodies. Above all, immunization with r-SP effectively protected mice against S. pneumoniae infection. Collectively, these results suggest that gamma- irradiation is an effective method for the development of a killed whole cell pneumococcal vaccine that elicits robust mucosal and systemic immune responses.

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Acute otitis media pneumococcal disease burden and nasopharyngeal colonization in children due to serotypes included and not included in current and new pneumococcal conjugate vaccines
Michael Pichichero, Richard Malley, Ravinder Kaur, Robert Zagursky, Porter Anderson
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Low-Energy Electron Irradiation of Tick-Borne Encephalitis Virus Provides a Protective Inactivated Vaccine
Julia Finkensieper, Leila Issmail, Jasmin Fertey, Alexandra Rockstroh, Simone Schopf, Bastian Standfest, Martin Thoma, Thomas Grunwald, Sebastian Ulbert
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Pedro H. Silva, Yaneisi Vázquez, Camilo Campusano, Angello Retamal-Díaz, Margarita K. Lay, Christian A. Muñoz, Pablo A. González, Alexis M. Kalergis, Susan M. Bueno
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Shannon C. David, Erin B. Brazel, Eve V. Singleton, Vikrant Minhas, Zoe Laan, Catherine Scougall, Austen Y. Chen, Hui Wang, Chloe J. Gates, Kimberley T. McLean, Jeremy S. Brown, Giuseppe Ercoli, Rachel A. Higgins, Paul V. Licciardi, Kim Mulholland, Justin
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William Walkowski, Justin Bassett, Manmeet Bhalla, Blaine A. Pfeifer, Elsa N. Bou Ghanem
Vaccines.2021; 9(6): 589. CrossRef
Immune Responses to Irradiated Pneumococcal Whole Cell Vaccine
Eunbyeol Ko, Soyoung Jeong, Min Yong Jwa, A Reum Kim, Ye-Eun Ha, Sun Kyung Kim, Sungho Jeong, Ki Bum Ahn, Ho Seong Seo, Cheol-Heui Yun, Seung Hyun Han
Vaccines.2021; 9(4): 405. CrossRef
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Palmy R. Jesudhasan, Sohini S. Bhatia, Kirthiram K. Sivakumar, Chandni Praveen, Kenneth J. Genovese, Haiqi L. He, Robert Droleskey, Jack L. McReynolds, James A. Byrd, Christina L. Swaggerty, Michael H. Kogut, David J. Nisbet, Suresh D. Pillai
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Automated application of low energy electron irradiation enables inactivation of pathogen- and cell-containing liquids in biomedical research and production facilities
Jasmin Fertey, Martin Thoma, Jana Beckmann, Lea Bayer, Julia Finkensieper, Susann Reißhauer, Beatrice Sarah Berneck, Leila Issmail, Jessy Schönfelder, Javier Portillo Casado, Andre Poremba, Frank-Holm Rögner, Bastian Standfest, Gustavo R. Makert, Lia Walc
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Catherine B. Blackwood, Emel Sen-Kilic, Dylan T. Boehm, Jesse M. Hall, Melinda E. Varney, Ting Y. Wong, Shelby D. Bradford, Justin R. Bevere, William T. Witt, F. Heath Damron, Mariette Barbier
Vaccines.2020; 8(4): 647. CrossRef
Low-Energy Electron Irradiation Efficiently Inactivates the Gram-Negative Pathogen Rodentibacter pneumotropicus—A New Method for the Generation of Bacterial Vaccines with Increased Efficacy
Jasmin Fertey, Lea Bayer, Sophie Kähl, Rukiya M. Haji, Anke Burger-Kentischer, Martin Thoma, Bastian Standfest, Jessy Schönfelder, Javier Portillo Casado, Frank-Holm Rögner, Christoph Georg Baums, Thomas Grunwald, Sebastian Ulbert
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Victor Morais, Esther Texeira, Norma Suarez
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Min Yong Jwa, Eun Byeol Ko, Hyun Young Kim, Sun Kyung Kim, Soyoung Jeong, Ho Seong Seo, Cheol-Heui Yun, Seung Hyun Han
Microbial Pathogenesis.2018; 124: 38. CrossRef

The synthetic human beta-defensin-3 C15 peptide exhibits antimicrobial activity against Streptococcus mutans, both alone and in combination with dental disinfectants: Ki Bum Ahn , A Reum Kim , Kee-Yeon Kum , Cheol-Heui Yun , Seung Hyun Han; J. Microbiol. 2017;55(10):830-836. Published online September 28, 2017; DOI: https://doi.org/10.1007/s12275-017-7362-y

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Abstract

Streptococcus mutans is a major etiologic agent of human dental caries that forms biofilms on hard tissues in the human oral cavity, such as tooth and dentinal surfaces. Human β-defensin-3 (HBD3) is a 45-amino-acid natural antimicrobial peptide that has broad spectrum antimicrobial activity against bacteria and fungi. A synthetic peptide consisting of the C-terminal 15 amino acids of HBD3 (HBD3-C15) was recently shown to be sufficient for its antimicrobial activity. Thus, clinical applications of this peptide have garnered attention. In this study, we investigated whether HBD3-C15 inhibits the growth of the representative cariogenic pathogen Streptococcus mutans and its biofilm formation. HBD3-C15 inhibited bacterial growth, exhibited bactericidal activity, and attenuated bacterial biofilm formation in a dose-dependent manner. HBD3-C15 potentiated the bactericidal and anti-biofilm activity of calcium hydroxide (CH) and chlorhexidine digluconate (CHX), which are representative disinfectants used in dental clinics, against S. mutans. Moreover, HBD3-C15 showed antimicrobial activity by inhibiting biofilm formation by S. mutans and other dentinophilic bacteria such as Enterococcus faecalis and Streptococcus gordonii, which are associated with dental caries and endodontic infection, on human dentin slices. These effects were observed for HBD3-C15 alone and for HBD3-C15 in combination with CH or CHX. Therefore, we suggest that HBD3-C15 is a potential alternative or additive disinfectant that can be used for the treatment of oral infectious diseases, including dental caries and endodontic infections.

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