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Zhou K, Zhang T, Chen XW, Xu Y, Zhang R, Qian PY. Viruses in Marine Invertebrate Holobionts: Complex Interactions Between Phages and Bacterial Symbionts. ANNUAL REVIEW OF MARINE SCIENCE 2024; 16:467-485. [PMID: 37647612 DOI: 10.1146/annurev-marine-021623-093133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Marine invertebrates are ecologically and economically important and have formed holobionts by evolving symbiotic relationships with cellular and acellular microorganisms that reside in and on their tissues. In recent decades, significant focus on symbiotic cellular microorganisms has led to the discovery of various functions and a considerable expansion of our knowledge of holobiont functions. Despite this progress, our understanding of symbiotic acellular microorganisms remains insufficient, impeding our ability to achieve a comprehensive understanding of marine holobionts. In this review, we highlight the abundant viruses, with a particular emphasis on bacteriophages; provide an overview of their diversity, especially in extensively studied sponges and corals; and examine their potential life cycles. In addition, we discuss potential phage-holobiont interactions of various invertebrates, including participating in initial bacterial colonization, maintaining symbiotic relationships, and causing or exacerbating the diseases of marine invertebrates. Despite the importance of this subject, knowledge of how viruses contribute to marine invertebrate organisms remains limited. Advancements in technology and greater attention to viruses will enhance our understanding of marine invertebrate holobionts.
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Affiliation(s)
- Kun Zhou
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China;
- Department of Ocean Science, Hong Kong University of Science and Technology, Hong Kong, China
| | - Ting Zhang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Institute of Marine Microbes and Ecospheres, Xiamen University (Xiang'an), Xiamen, Fujian, China
| | - Xiao-Wei Chen
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Institute of Marine Microbes and Ecospheres, Xiamen University (Xiang'an), Xiamen, Fujian, China
| | - Ying Xu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China;
| | - Rui Zhang
- Institute for Advanced Study, Shenzhen University, Shenzhen, China;
| | - Pei-Yuan Qian
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China;
- Department of Ocean Science, Hong Kong University of Science and Technology, Hong Kong, China
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Ha EJ, Hong SM, Kim SJ, Ahn SM, Kim HW, Choi KS, Kwon HJ. Tracing the Evolutionary Pathways of Serogroup O78 Avian Pathogenic Escherichia coli. Antibiotics (Basel) 2023; 12:1714. [PMID: 38136748 PMCID: PMC10740950 DOI: 10.3390/antibiotics12121714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/17/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Avian pathogenic E. coli (APEC) causes severe economic losses in the poultry industry, and O78 serogroup APEC strains are prevalent in chickens. In this study, we aimed to understand the evolutionary pathways and relationships between O78 APEC and other E. coli strains. To trace these evolutionary pathways, we classified 3101 E. coli strains into 306 subgenotypes according to the numbers and types of single nucleotide polymorphisms (RST0 to RST63-1) relative to the consensus sequence (RST0) of the RNA polymerase beta subunit gene and performed network analysis. The E. coli strains showed four apparently different evolutionary pathways (I-1, I-2, I-3, and II). The thirty-two Korean O78 APEC strains tested in this study were classified into RST4-4 (45.2%), RST3-1 (32.3%), RST21-1 (12.9%), RST4-5 (3.2%), RST5-1 (3.2%), and RST12-6 (3.2%), and all RSTs except RST21-1 (I-2) may have evolved through the same evolutionary pathway (I-1). A comparative genomic study revealed the highest relatedness between O78 strains of the same RST in terms of genome sequence coverage/identity and the spacer sequences of CRISPRs. The early-appearing RST3-1 and RST4-4 prevalence among O78 APEC strains may reflect the early settlement of O78 E. coli in chickens, after which these bacteria accumulated virulence and antibiotic resistance genes to become APEC strains. The zoonotic risk of the conventional O78 APEC strains is low at present, but the appearance of genetically distinct and multiple virulence gene-bearing RST21-1 O78 APEC strains may alert us to a need to evaluate their virulence in chickens as well as their zoonotic risk.
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Affiliation(s)
- Eun-Jin Ha
- Laboratory of Avian Diseases, Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 PLUS for Veterinary Science, Seoul National University, Seoul 088026, Republic of Korea; (E.-J.H.); (S.-M.H.); (S.-J.K.)
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul 08826, Republic of Korea; (S.-M.A.); (H.-W.K.)
| | - Seung-Min Hong
- Laboratory of Avian Diseases, Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 PLUS for Veterinary Science, Seoul National University, Seoul 088026, Republic of Korea; (E.-J.H.); (S.-M.H.); (S.-J.K.)
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul 08826, Republic of Korea; (S.-M.A.); (H.-W.K.)
| | - Seung-Ji Kim
- Laboratory of Avian Diseases, Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 PLUS for Veterinary Science, Seoul National University, Seoul 088026, Republic of Korea; (E.-J.H.); (S.-M.H.); (S.-J.K.)
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul 08826, Republic of Korea; (S.-M.A.); (H.-W.K.)
| | - Sun-Min Ahn
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul 08826, Republic of Korea; (S.-M.A.); (H.-W.K.)
| | - Ho-Won Kim
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul 08826, Republic of Korea; (S.-M.A.); (H.-W.K.)
| | - Kang-Seuk Choi
- Laboratory of Avian Diseases, Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 PLUS for Veterinary Science, Seoul National University, Seoul 088026, Republic of Korea; (E.-J.H.); (S.-M.H.); (S.-J.K.)
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul 08826, Republic of Korea; (S.-M.A.); (H.-W.K.)
| | - Hyuk-Joon Kwon
- Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul 08826, Republic of Korea; (S.-M.A.); (H.-W.K.)
- Laboratory of Poultry Medicine, Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 PLUS for Veterinary Science, Seoul National University, Seoul 088026, Republic of Korea
- Farm Animal Clinical Training and Research Center (FACTRC), GBST, Seoul National University, Pyeongchang 25354, Republic of Korea
- GeNiner Inc., Seoul 08826, Republic of Korea
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Yoon S, Lee YJ. Molecular characteristics of ESBL-producing Escherichia coli isolated from chickens with colibacillosis. J Vet Sci 2022; 23:e37. [PMID: 35332711 PMCID: PMC9149503 DOI: 10.4142/jvs.21105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 12/31/2021] [Accepted: 02/03/2022] [Indexed: 11/20/2022] Open
Affiliation(s)
- Sunghyun Yoon
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Korea
- Division of Microbiology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR 72079, USA
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Korea
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Liang J, Kou Z, Qin S, Chen Y, Li Z, Li C, Duan R, Hao H, Zha T, Gu W, Huang Y, Xiao M, Jing H, Wang X. Novel Yersinia enterocolitica Prophages and a Comparative Analysis of Genomic Diversity. Front Microbiol 2019; 10:1184. [PMID: 31191498 PMCID: PMC6548840 DOI: 10.3389/fmicb.2019.01184] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 05/09/2019] [Indexed: 12/18/2022] Open
Abstract
Yersinia enterocolitica is a major agent of foodborne diseases worldwide. Prophage plays an important role in the genetic evolution of the bacterial genome. Little is known about the genetic information about prophages in the genome of Y. enterocolitica, and no pathogenic Y. enterocolitica prophages have been described. In this study, we induced and described the genomes of six prophages from pathogenic Y. enterocolitica for the first time. Phylogenetic analysis based on whole genome sequencing revealed that these novel Yersinia phages are genetically distinct from the previously reported phages, showing considerable genetic diversity. Interestingly, the prophages induced from O:3 and O:9 Y. enterocolitica showed different genomic sequences and morphology but highly conserved among the same serotype strains, which classified into two diverse clusters. The three long-tailed Myoviridae prophages induced from serotype O:3 Y. enterocolitica were highly conserved, shared ≥99.99% identity and forming genotypic cluster A; the three Podoviridae prophages induced from the serotype O:9 strains formed cluster B, also shared more than 99.90% identity with one another. Cluster A was most closely related to O:5 non-pathogenic Y. enterocolitica prophage PY54 (61.72% identity). The genetic polymorphism of these two kinds of prophages and highly conserved among the same serotype strains, suggested a possible shared evolutionary past for these phages: originated from distinct ancestors, and entered pathogenic Y. enterocolitica as extrachromosomal genetic components during evolution when facing selective pressure. These results are critically important for further understanding of phage roles in host physiology and the pathology of disease.
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Affiliation(s)
- Junrong Liang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases - Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Zengqiang Kou
- Shandong Provincial Centre for Disease Control and Prevention, Jinan, China
| | - Shuai Qin
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases - Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Yuhuang Chen
- Shenzhen Nanshan Maternity and Child Heath Care Hospital, Shenzhen, China
| | - Zhenpeng Li
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases - Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Chuchu Li
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases - Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China.,Department of Pathogenic Biology, School of Medical Science, Jiangsu University, Zhenjiang, China
| | - Ran Duan
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases - Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Huijing Hao
- Chang Ping Women and Children Health Care Hospital, Beijing, China
| | - Tao Zha
- Wuhu Municipal Centre for Disease Control and Prevention, Wuhu, China
| | - Wenpeng Gu
- Yunnan Provincial Centre for Disease Control and Prevention, Kunming, China
| | - Yuanming Huang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases - Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Meng Xiao
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases - Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Huaiqi Jing
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases - Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Xin Wang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases - Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
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Lai JYH, Zhang H, Chiang MHY, Lun CHI, Zhang R, Lau SCK. The putative functions of lysogeny in mediating the survivorship of Escherichia coli in seawater and marine sediment. FEMS Microbiol Ecol 2019; 94:4780272. [PMID: 29293955 DOI: 10.1093/femsec/fix187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Accepted: 12/25/2017] [Indexed: 01/07/2023] Open
Abstract
Escherichia coli colonizes various body parts of animal hosts as a commensal and a pathogen. It can also persist in the external environment in the absence of fecal pollution. It remains unclear how this species has evolved to adapt to such contrasting habitats. Lysogeny plays pivotal roles in the diversification of the phenotypic and ecologic characters of E. coli as a symbiont. We hypothesized that lysogeny could also confer fitness to survival in the external environment. To test this hypothesis, we used the induced phages of an E. coli strain originating from marine sediment to infect a fecal E. coli strain to obtain an isogenic lysogen of the latter. The three strains were tested for survivorship in microcosms of seawater, marine sediment and sediment interstitial water as well as swimming motility, glycogen accumulation, biofilm formation, substrate utilization and stress resistance. The results indicate that lysogenic infection led to tractable changes in many of the ecophysiological attributes tested. Particularly, the lysogen had better survivorship in the microcosms and had a substrate utilization profile resembling the sediment strain more than the wild type fecal strain. Our findings provide new insights into the understanding of how E. coli survives in the natural environment.
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Affiliation(s)
- Jennifer Yuet Ha Lai
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Hao Zhang
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Miranda Hei Yin Chiang
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Clare Hau In Lun
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
| | - Rui Zhang
- Institute of Marine Microbes and Ecospheres, and State Key Laboratory of Marine Environmental Science, Xiamen University, People's Republic of China
| | - Stanley Chun Kwan Lau
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong
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Ko DS, Seong WJ, Kim D, Kim EK, Kim NH, Lee CY, Kim JH, Kwon HJ. Molecular prophage typing of Staphylococcus aureus isolates from bovine mastitis. J Vet Sci 2019; 19:771-781. [PMID: 30173494 PMCID: PMC6265582 DOI: 10.4142/jvs.2018.19.6.771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 08/14/2018] [Accepted: 08/21/2018] [Indexed: 01/22/2023] Open
Abstract
Staphylococcus aureus is one of the major pathogens causing bovine mastitis and foodborne diseases associated with dairy products. To determine the genetic relationships between human and bovine or bovine isolates of S. aureus, various molecular methods have been used. Previously we developed an rpoB sequence typing (RSTing) method for molecular differentiation of S. aureus isolates and identification of RpoB-related antibiotic resistance. In this study, we performed spa typing and RSTing with 84 isolates from mastitic cows (22 farms, 72 cows, and 84 udders) and developed a molecular prophage typing (mPPTing) method for molecular epidemiological analysis of bovine mastitis. To compare the results, human isolates from patients (n = 14) and GenBank (n = 166) were used for real and in silico RSTing and mPPTing, respectively. Based on the results, RST10-2 and RST4-1 were the most common rpoB sequence types (RSTs) in cows and humans, respectively, and most isolates from cows and humans clearly differed. Antibiotic resistance-related RSTs were not detected in the cow isolates. A single dominant prophage type and gradual evolution through prophage acquisition were apparent in most of the tested farms. Thus, RSTing and mPPTing are informative, simple, and economic methods for molecular epidemiological analysis of S. aureus infections.
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Affiliation(s)
- Dae-Sung Ko
- Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea.,Laboratory of Avian Diseases, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Won-Jin Seong
- Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea.,Laboratory of Avian Diseases, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Danil Kim
- Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Eun-Kyung Kim
- Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Nam-Hyung Kim
- Laboratory of Avian Diseases, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Chung-Young Lee
- Laboratory of Avian Diseases, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Jae-Hong Kim
- Laboratory of Avian Diseases, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea.,Research Institute for Veterinary Science, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea
| | - Hyuk-Joon Kwon
- Department of Farm Animal Medicine, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea.,Research Institute for Veterinary Science, College of Veterinary Medicine and BK21 for Veterinary Science, Seoul National University, Seoul 08826, Korea
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Liu J, Mu X, Wang X, Huan H, Gao Q, Chen J, Qiao P, Jiang L, Gao S, Liu X. Unexpected transcriptome pompT' contributes to the increased pathogenicity of a pompT mutant of avian pathogenic Escherichia coli. Vet Microbiol 2018; 228:61-68. [PMID: 30593381 DOI: 10.1016/j.vetmic.2018.11.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 11/10/2018] [Accepted: 11/15/2018] [Indexed: 11/17/2022]
Abstract
The lambda red recombination system makes it suitable for screening virulence gene utility in avian pathogenic Escherichia coli (APEC) on account of its wide applicability, simplicity and high efficiency. In APEC E058 (O2 serogroup), there are two copies of the outer membrane protease (ompT) gene, compT encoding cOmpT that is located on the chromosome and pompT encoding pOmpT that is located on a ColV plasmid. However, the relationship between pathogenesis and pompT expression in APEC E058 has yet to be elucidated. Here, we successfully constructed two pompT gene mutants: E058ΔpompT containing a chloramphenicol (cat) resistance gene and E058ΔpompT' without the cat gene. By RT-PCR and sequencing analysis, an unexpected transcriptome pompT' was detected in mutant strain E058ΔpompT' after deletion of the cat gene induced by the lambda red recombination system. Surprisingly, the pathogenicity of mutant E058ΔpompT was significantly attenuated compared to its parental strain in the chicken infection model and HD11 cell model then the pompT gene was knocked out, while the pathogenicity of the other mutant strain E058ΔpompT' had no difference. Furthermore, the presence of unexpected transcriptome pompT' influenced the bactericidal activity of SPF chicken serum and decreased the transcription level of TLR2 in the heart tissue of chickens. Our study identifies the pompT gene plays an important role in the virulence of APEC E058, and the unexpected transcriptome pompT' contributes to the increased pathogenicity of APEC E058 mutants following deletion of the cat gene induced by the lambda red recombination system, which suggests that this system still has some limitations for construction of mutant strains particularly where these are used in development of live vaccine.
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Affiliation(s)
- Juanhua Liu
- Key Laboratory for Avian Bioproducts Development, Animal Infectious Disease Laboratory, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Yangzhou, China; The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory for Zoonosis, Jiangsu Key Laboratory of Preventive Veterinary Medicine, Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Xiaohui Mu
- Key Laboratory for Avian Bioproducts Development, Animal Infectious Disease Laboratory, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Yangzhou, China; The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory for Zoonosis, Jiangsu Key Laboratory of Preventive Veterinary Medicine, Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Xiaobo Wang
- Key Laboratory for Avian Bioproducts Development, Animal Infectious Disease Laboratory, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Yangzhou, China; The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory for Zoonosis, Jiangsu Key Laboratory of Preventive Veterinary Medicine, Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Haixia Huan
- College of Life Science, Huaiyin Normal University, Huaian, China
| | - Qingqing Gao
- Key Laboratory for Avian Bioproducts Development, Animal Infectious Disease Laboratory, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Yangzhou, China; The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory for Zoonosis, Jiangsu Key Laboratory of Preventive Veterinary Medicine, Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Juan Chen
- Key Laboratory for Avian Bioproducts Development, Animal Infectious Disease Laboratory, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Yangzhou, China; The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory for Zoonosis, Jiangsu Key Laboratory of Preventive Veterinary Medicine, Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Peizhuang Qiao
- Key Laboratory for Avian Bioproducts Development, Animal Infectious Disease Laboratory, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Yangzhou, China; The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory for Zoonosis, Jiangsu Key Laboratory of Preventive Veterinary Medicine, Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Luyao Jiang
- Key Laboratory for Avian Bioproducts Development, Animal Infectious Disease Laboratory, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Yangzhou, China; The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory for Zoonosis, Jiangsu Key Laboratory of Preventive Veterinary Medicine, Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Song Gao
- Key Laboratory for Avian Bioproducts Development, Animal Infectious Disease Laboratory, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Yangzhou, China; The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory for Zoonosis, Jiangsu Key Laboratory of Preventive Veterinary Medicine, Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, College of Veterinary Medicine, Yangzhou University, Yangzhou, China.
| | - Xiufan Liu
- Key Laboratory for Avian Bioproducts Development, Animal Infectious Disease Laboratory, Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Yangzhou, China; The International Joint Laboratory for Cooperation in Agriculture and Agricultural Product Safety, Ministry of Education, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Jiangsu Key Laboratory for Zoonosis, Jiangsu Key Laboratory of Preventive Veterinary Medicine, Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
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8
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Geng P, Tian S, Yuan Z, Hu X. Identification and genomic comparison of temperate bacteriophages derived from emetic Bacillus cereus. PLoS One 2017; 12:e0184572. [PMID: 28886124 PMCID: PMC5590980 DOI: 10.1371/journal.pone.0184572] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 08/25/2017] [Indexed: 01/21/2023] Open
Abstract
Cereulide-producing Bacillus cereus isolates can cause serious emetic (vomiting) syndrome and even acute lethality. As mobile genetic elements, the exploration of prophages derived from emetic B. cereus isolates will help in our understanding of the genetic diversity and evolution of these pathogens. In this study, five temperate phages derived from cereulide-producing B. cereus strains were induced, with four of them undergoing genomic sequencing. Sequencing revealed that they all belong to the Siphoviridae family, but presented in different forms in their hosts. PfNC7401 and PfIS075 have typical icosahedral heads, probably existing alone as phagemids in the host with self-replicating capability in the lysogenic state. PfEFR-4, PfEFR-5, and PfATCC7953 have elongated heads, with the genomes of the former two identified as linear dsDNA, which could be integrated into the host genome during the lysogenic state. Genomic comparison of the four phages with others also derived from emetic B. cereus isolates showed similar genome structures and core genes, thus displaying host spectrum specificity. In addition, phylogenic analysis based on the complete genome and conserved tail fiber proteins of 36 Bacillus species-derived phages confirmed that the phages derived from emetic B. cereus strains were highly similar. Furthermore, one endolysin LysPfEFR-4 was cloned and showed lytic activity against all tested emetic B. cereus strains and cross-lytic activity against some other pathogenic bacteria, implying a potential to control bacterial contamination in the food supply.
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Affiliation(s)
- Peiling Geng
- Key Laboratory of Special Pathogens and Biosafety, Center for Emerging Infectious Diseases, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- University of the Chinese Academy of Sciences, Beijing, China
| | - Shen Tian
- Key Laboratory of Special Pathogens and Biosafety, Center for Emerging Infectious Diseases, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Zhiming Yuan
- Key Laboratory of Special Pathogens and Biosafety, Center for Emerging Infectious Diseases, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- * E-mail: (XH); (ZY)
| | - Xiaomin Hu
- Key Laboratory of Special Pathogens and Biosafety, Center for Emerging Infectious Diseases, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- * E-mail: (XH); (ZY)
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The transfer-messenger RNA-small protein B system plays a role in avian pathogenic Escherichia coli pathogenicity. J Bacteriol 2013; 195:5064-71. [PMID: 24013628 DOI: 10.1128/jb.00628-13] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Extraintestinal pathogenic Escherichia coli (ExPEC) is capable of colonizing outside of the intestinal tract and evolving into a systemic infection. Avian pathogenic E. coli (APEC) is a member of the ExPEC group and causes avian colibacillosis. Transfer-mRNA-small protein B (tmRNA-SmpB)-mediated trans-translation is a bacterial translational control system that directs the modification and degradation of proteins, the biosynthesis of which has stalled or has been interrupted, facilitating the rescue of ribosomes stalled at the 3' ends of defective mRNAs that lack a stop codon. We found that disruption of one, or both, of the smpB or ssrA genes significantly decreased the virulence of the APEC strain E058, as assessed by chicken infection assays. Furthermore, the mutants were obviously attenuated in colonization and persistence assays. The results of quantitative real-time reverse transcription-PCR analysis indicated that the transcription levels of the transcriptional regulation gene rfaH and the virulence genes kpsM, chuA, and iss were significantly decreased compared to those of the wild-type strain. Macrophage infection assays showed that the mutant strains reduced the replication and/or survival ability in the macrophage HD11 cell line compared to that of the parent strain, E058. However, no significant differences were observed in ingestion by macrophages and in chicken serum resistance between the mutant and the wild-type strains. These data indicate that the tmRNA-SmpB system is important in the pathogenesis of APEC O2 strain E058.
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