Streptococcus suis serotype 4: a population with the potential pathogenicity in humans and pigs
Streptococcus suis is a major bacterial pathogen in pigs and an emerging zoonotic pathogen. Different S. suis serotypes exhibit diverse characteristics in population structure and pathogenicity. Surveillance data highlight the significance of S. suis serotype 4 (SS4) in swine streptococcusis, a path...
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Taylor & Francis Group
2024-12-01
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| Series: | Emerging Microbes and Infections |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/22221751.2024.2352435 |
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| author | Jinlu Zhu Jianping Wang Weiming Kang Xiyan Zhang Anusak Kerdsin Huochun Yao Han Zheng Zongfu Wu |
| author_facet | Jinlu Zhu Jianping Wang Weiming Kang Xiyan Zhang Anusak Kerdsin Huochun Yao Han Zheng Zongfu Wu |
| author_sort | Jinlu Zhu |
| collection | DOAJ |
| description | Streptococcus suis is a major bacterial pathogen in pigs and an emerging zoonotic pathogen. Different S. suis serotypes exhibit diverse characteristics in population structure and pathogenicity. Surveillance data highlight the significance of S. suis serotype 4 (SS4) in swine streptococcusis, a pathotype causing human infections. However, except for a few epidemiologic studies, the information on SS4 remains limited. In this study, we investigated the population structure, pathogenicity, and antimicrobial characteristics of SS4 based on 126 isolates, including one from a patient with septicemia. We discovered significant diversities within this population, clustering into six minimum core genome (MCG) groups (1, 2, 3, 4, 7-2, and 7-3) and five lineages. Two main clonal complexes (CCs), CC17 and CC94, belong to MCG groups 1 and 3, respectively. Numerous important putative virulence-associated genes are present in these two MCG groups, and 35.00% (7/20) of pig isolates from CC17, CC94, and CC839 (also belonging to MCG group 3) were highly virulent (mortality rate ≥ 80%) in zebrafish and mice, similar to the human isolate ID36054. Cytotoxicity assays showed that the human and pig isolates of SS4 strains exhibit significant cytotoxicity to human cells. Antimicrobial susceptibility testing showed that 95.83% of strains isolated from our labs were classified as multidrug-resistant. Prophages were identified as the primary vehicle for antibiotic resistance genes. Our study demonstrates the public health threat posed by SS4, expanding the understanding of SS4 population structure and pathogenicity characteristics and providing valuable information for its surveillance and prevention. |
| format | Article |
| id | doaj-art-e19b84b661404eaf99b61676dd3dbccd |
| institution | OA Journals |
| issn | 2222-1751 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Emerging Microbes and Infections |
| spelling | doaj-art-e19b84b661404eaf99b61676dd3dbccd2025-08-20T02:20:37ZengTaylor & Francis GroupEmerging Microbes and Infections2222-17512024-12-0113110.1080/22221751.2024.2352435Streptococcus suis serotype 4: a population with the potential pathogenicity in humans and pigsJinlu Zhu0Jianping Wang1Weiming Kang2Xiyan Zhang3Anusak Kerdsin4Huochun Yao5Han Zheng6Zongfu Wu7MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, People’s Republic of ChinaNational Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of ChinaNational Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of ChinaNational Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of ChinaFaculty of Public Health, Kasetsart University Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon, ThailandMOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, People’s Republic of ChinaNational Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of ChinaMOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, People’s Republic of ChinaStreptococcus suis is a major bacterial pathogen in pigs and an emerging zoonotic pathogen. Different S. suis serotypes exhibit diverse characteristics in population structure and pathogenicity. Surveillance data highlight the significance of S. suis serotype 4 (SS4) in swine streptococcusis, a pathotype causing human infections. However, except for a few epidemiologic studies, the information on SS4 remains limited. In this study, we investigated the population structure, pathogenicity, and antimicrobial characteristics of SS4 based on 126 isolates, including one from a patient with septicemia. We discovered significant diversities within this population, clustering into six minimum core genome (MCG) groups (1, 2, 3, 4, 7-2, and 7-3) and five lineages. Two main clonal complexes (CCs), CC17 and CC94, belong to MCG groups 1 and 3, respectively. Numerous important putative virulence-associated genes are present in these two MCG groups, and 35.00% (7/20) of pig isolates from CC17, CC94, and CC839 (also belonging to MCG group 3) were highly virulent (mortality rate ≥ 80%) in zebrafish and mice, similar to the human isolate ID36054. Cytotoxicity assays showed that the human and pig isolates of SS4 strains exhibit significant cytotoxicity to human cells. Antimicrobial susceptibility testing showed that 95.83% of strains isolated from our labs were classified as multidrug-resistant. Prophages were identified as the primary vehicle for antibiotic resistance genes. Our study demonstrates the public health threat posed by SS4, expanding the understanding of SS4 population structure and pathogenicity characteristics and providing valuable information for its surveillance and prevention.https://www.tandfonline.com/doi/10.1080/22221751.2024.2352435Streptococcus suis serotype 4population structurepathogenicityantimicrobial susceptibilityprophageintegrative and conjugative elements |
| spellingShingle | Jinlu Zhu Jianping Wang Weiming Kang Xiyan Zhang Anusak Kerdsin Huochun Yao Han Zheng Zongfu Wu Streptococcus suis serotype 4: a population with the potential pathogenicity in humans and pigs Emerging Microbes and Infections Streptococcus suis serotype 4 population structure pathogenicity antimicrobial susceptibility prophage integrative and conjugative elements |
| title | Streptococcus suis serotype 4: a population with the potential pathogenicity in humans and pigs |
| title_full | Streptococcus suis serotype 4: a population with the potential pathogenicity in humans and pigs |
| title_fullStr | Streptococcus suis serotype 4: a population with the potential pathogenicity in humans and pigs |
| title_full_unstemmed | Streptococcus suis serotype 4: a population with the potential pathogenicity in humans and pigs |
| title_short | Streptococcus suis serotype 4: a population with the potential pathogenicity in humans and pigs |
| title_sort | streptococcus suis serotype 4 a population with the potential pathogenicity in humans and pigs |
| topic | Streptococcus suis serotype 4 population structure pathogenicity antimicrobial susceptibility prophage integrative and conjugative elements |
| url | https://www.tandfonline.com/doi/10.1080/22221751.2024.2352435 |
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