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Huang C, Yu L, Xu Y, Huang J, Qin Y, Guo X, Zeng Y, Qin Y, Ouyang K, Wei Z, Huang W, García-Sastre A, Chen Y. Long-term co-circulation of multiple influenza A viruses in pigs, Guangxi, China. Emerg Microbes Infect 2024; 13:2337673. [PMID: 38572517 PMCID: PMC11005871 DOI: 10.1080/22221751.2024.2337673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 03/27/2024] [Indexed: 04/05/2024]
Abstract
Influenza A viruses (IAVs) pose a persistent potential threat to human health because of the spillover from avian and swine infections. Extensive surveillance was performed in 12 cities of Guangxi, China, during 2018 and 2023. A total of 2540 samples (including 2353 nasal swabs and 187 lung tissues) were collected from 18 pig farms with outbreaks of respiratory disease. From these, 192 IAV-positive samples and 19 genomic sequences were obtained. We found that the H1 and H3 swine influenza A viruses (swIAVs) of multiple lineages and genotypes have continued to co-circulate during that time in this region. Genomic analysis revealed the Eurasian avian-like H1N1 swIAVs (G4) still remained predominant in pig populations. Strikingly, the novel multiple H3N2 genotypes were found to have been generated through the repeated introduction of the early H3N2 North American triple reassortant viruses (TR H3N2 lineage) that emerged in USA and Canada in 1998 and 2005, respectively. Notably, when the matrix gene segment derived from the H9N2 avian influenza virus was introduced into endemic swIAVs, this produced a novel quadruple reassortant H1N2 swIAV that could pose a potential risk for zoonotic infection.
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Affiliation(s)
- Chongqiang Huang
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, People’s Republic of China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, People’s Republic of China
| | - Liangzheng Yu
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
| | - Yi Xu
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, People’s Republic of China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, People’s Republic of China
| | - Jiamo Huang
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, People’s Republic of China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, People’s Republic of China
| | - Yibin Qin
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Institute of Veterinary Medicine, Nanning, People’s Republic of China
| | - Xuan Guo
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Nongken Yongxin Animal Husbandry Group Co. Ltd., Nanning, People’s Republic of China
| | - Yongfang Zeng
- Nanning Zhufulai Animal Health Management Co. Ltd., Nanning, People’s Republic of China
| | - Yifeng Qin
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, People’s Republic of China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, People’s Republic of China
| | - Kang Ouyang
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, People’s Republic of China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, People’s Republic of China
| | - Zuzhang Wei
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, People’s Republic of China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, People’s Republic of China
| | - Weijian Huang
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, People’s Republic of China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, People’s Republic of China
| | - Adolfo García-Sastre
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ying Chen
- Laboratory of Animal Infectious Diseases and Molecular Immunology, College of Animal Science and Technology, Guangxi University, Nanning, People’s Republic of China
- Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning, People’s Republic of China
- Guangxi Key Laboratory of Animal Breeding, Disease Control and Prevention, Nanning, People’s Republic of China
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2
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Xing X, Shi J, Cui P, Yan C, Zhang Y, Zhang Y, Wang C, Chen Y, Zeng X, Tian G, Liu L, Guan Y, Li C, Suzuki Y, Deng G, Chen H. Evolution and biological characterization of H5N1 influenza viruses bearing the clade 2.3.2.1 hemagglutinin gene. Emerg Microbes Infect 2024; 13:2284294. [PMID: 37966008 PMCID: PMC10769554 DOI: 10.1080/22221751.2023.2284294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/12/2023] [Indexed: 11/16/2023]
Abstract
H5N1 avian influenza viruses bearing the clade 2.3.2.1 hemagglutinin (HA) gene have been widely detected in birds and poultry in several countries. During our routine surveillance, we isolated 28 H5N1 viruses between January 2017 and October 2020. To investigate the genetic relationship of the globally circulating H5N1 viruses and the biological properties of those detected in China, we performed a detailed phylogenic analysis of 274 representative H5N1 strains and analyzed the antigenic properties, receptor-binding preference, and virulence in mice of the H5N1 viruses isolated in China. The phylogenic analysis indicated that the HA genes of the 274 viruses belonged to six subclades, namely clades 2.3.2.1a to 2.3.2.1f; these viruses acquired gene mutations and underwent complicated reassortment to form 58 genotypes, with G43 being the dominant genotype detected in eight Asian and African countries. The 28 H5N1 viruses detected in this study carried the HA of clade 2.3.2.1c (two strains), 2.3.2.1d (three strains), or 2.3.2.1f (23 strains), and formed eight genotypes. These viruses were antigenically well-matched with the H5-Re12 vaccine strain used in China. Animal studies showed that the pathogenicity of the H5N1 viruses ranged from non-lethal to highly lethal in mice. Moreover, the viruses exclusively bound to avian-type receptors and have not acquired the ability to bind to human-type receptors. Our study reveals the overall picture of the evolution of clade 2.3.2.1 H5N1 viruses and provides insights into the control of these viruses.
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Affiliation(s)
- Xin Xing
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Jianzhong Shi
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, People’s Republic of China
- Institute of Western Agriculture, CAAS, Changji, People’s Republic of China
| | - Pengfei Cui
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Cheng Yan
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Yaping Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Yuancheng Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Congcong Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Yuan Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Xianying Zeng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Guobin Tian
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Liling Liu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Yuntao Guan
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
- National Poultry Laboratory Animal Resource Center, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Chengjun Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, People’s Republic of China
| | - Yasuo Suzuki
- Department of Medical Biochemistry, University of Shizuoka School of Pharmaceutical Sciences, Shizuoka, Japan
| | - Guohua Deng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
| | - Hualan Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, People’s Republic of China
- National Poultry Laboratory Animal Resource Center, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
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3
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Hou Y, Deng G, Cui P, Zeng X, Li B, Wang D, He X, Yan C, Zhang Y, Li J, Ma J, Li Y, Wang X, Tian G, Kong H, Tang L, Suzuki Y, Shi J, Chen H. Evolution of H7N9 highly pathogenic avian influenza virus in the context of vaccination. Emerg Microbes Infect 2024; 13:2343912. [PMID: 38629574 PMCID: PMC11060016 DOI: 10.1080/22221751.2024.2343912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 04/11/2024] [Indexed: 05/01/2024]
Abstract
Human infections with the H7N9 influenza virus have been eliminated in China through vaccination of poultry; however, the H7N9 virus has not yet been eradicated from poultry. Carefully analysis of H7N9 viruses in poultry that have sub-optimal immunity may provide a unique opportunity to witness the evolution of highly pathogenic avian influenza virus in the context of vaccination. Between January 2020 and June 2023, we isolated 16 H7N9 viruses from samples we collected during surveillance and samples that were sent to us for disease diagnosis. Genetic analysis indicated that these viruses belonged to a single genotype previously detected in poultry. Antigenic analysis indicated that 12 of the 16 viruses were antigenically close to the H7-Re4 vaccine virus that has been used since January 2022, and the other four viruses showed reduced reactivity with the vaccine. Animal studies indicated that all 16 viruses were nonlethal in mice, and four of six viruses showed reduced virulence in chickens upon intranasally inoculation. Importantly, the H7N9 viruses detected in this study exclusively bound to the avian-type receptors, having lost the capacity to bind to human-type receptors. Our study shows that vaccination slows the evolution of H7N9 virus by preventing its reassortment with other viruses and eliminates a harmful characteristic of H7N9 virus, namely its ability to bind to human-type receptors.
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Affiliation(s)
- Yujie Hou
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People’s Republic of China
| | - Guohua Deng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Pengfei Cui
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Xianying Zeng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Bin Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Dongxue Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Xinwen He
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Cheng Yan
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Yaping Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Jiongjie Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Jinming Ma
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
- Institute of Western Agriculture, CAAS, Changji, People's Republic of China
| | - Yanbing Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Xiurong Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Guobin Tian
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Huihui Kong
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, People’s Republic of China
| | - Yasuo Suzuki
- Department of Medical Biochemistry, University of Shizuoka School of Pharmaceutical Sciences, Shizuoka, Japan
| | - Jianzhong Shi
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
- Institute of Western Agriculture, CAAS, Changji, People's Republic of China
| | - Hualan Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, CAAS,Harbin, People’s Republic of China
- National Poultry Laboratory Animal Resource Center, Harbin Veterinary Research Institute, CAAS, Harbin, People’s Republic of China
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4
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Yamaji R, Zhang W, Kamata A, Adlhoch C, Swayne DE, Pereyaslov D, Wang D, Neumann G, Pavade G, Barr IG, Peiris M, Webby RJ, Fouchier RAM, Von Dobschütz S, Fabrizio T, Shu Y, Samaan M. Pandemic risk characterisation of zoonotic influenza A viruses using the Tool for Influenza Pandemic Risk Assessment (TIPRA). THE LANCET. MICROBE 2024:100973. [PMID: 39396528 DOI: 10.1016/j.lanmic.2024.100973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 07/26/2024] [Accepted: 08/09/2024] [Indexed: 10/15/2024]
Abstract
A systematic risk assessment approach is essential for evaluating the relative risk of influenza A viruses (IAVs) with pandemic potential. To achieve this, the Tool for Influenza Pandemic Risk Assessment (TIPRA) was developed under the Global Influenza Programme of WHO. Since its release in 2016 and update in 2020, TIPRA has been used to assess the pandemic risk of 11 zoonotic IAVs across ten evaluation rounds. Notably, A(H7N9), A(H9N2), and A(H5) clade 2.3.4.4 viruses were re-evaluated owing to changes in epidemiological characteristics or virus properties. A(H7N9) viruses had the highest relative risk at the time of assessment, highlighting the importance of continuous monitoring and reassessment as changes in epidemiological trends within animal and human populations can alter risk profiles. The knowledge gaps identified throughout the ten risk assessments should help to guide the efficient use of resources for future research, including surveillance. The TIPRA tool reflects the One Health approach and has proven crucial for closely monitoring virus dynamics in both human and non-human populations to enhance preparedness for potential IAV pandemics.
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Affiliation(s)
- Reina Yamaji
- Global Influenza Programme, Epidemic and Pandemic Preparedness and Prevention, WHO Emergency Programme, World Health Organization, Geneva, Switzerland
| | - Wenqing Zhang
- Global Influenza Programme, Epidemic and Pandemic Preparedness and Prevention, WHO Emergency Programme, World Health Organization, Geneva, Switzerland
| | - Akiko Kamata
- The Food and Agriculture Organization of the UN (FAO), Rome, Italy
| | - Cornelia Adlhoch
- European Centre for Disease Prevention and Control, Solna, Sweden
| | | | - Dmitriy Pereyaslov
- Global Influenza Programme, Epidemic and Pandemic Preparedness and Prevention, WHO Emergency Programme, World Health Organization, Geneva, Switzerland
| | - Dayan Wang
- National Institute for Viral Disease Control and Prevention, China CDC, Changping District, Beijing, China
| | - Gabriele Neumann
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, USA
| | | | - Ian G Barr
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Malik Peiris
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Richard J Webby
- Department of Infectious Diseases, St Jude Children's Research Hospital, Memphis, TN, USA
| | - Ron A M Fouchier
- Department of Viroscience, Erasmus Medical Centre, Rotterdam, Netherlands
| | - Sophie Von Dobschütz
- The Food and Agriculture Organization of the UN (FAO), Rome, Italy; Emerging Diseases and Zoonoses Unit, Department for Epidemic and Pandemic Preparedness and Prevention, World Health Organization, Geneva, Switzerland
| | - Thomas Fabrizio
- Department of Infectious Diseases, St Jude Children's Research Hospital, Memphis, TN, USA
| | - Yuelong Shu
- Institute of Pathogen Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Magdi Samaan
- Global Influenza Programme, Epidemic and Pandemic Preparedness and Prevention, WHO Emergency Programme, World Health Organization, Geneva, Switzerland.
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Yang Y, Xu C, Zhang N, Wan Y, Wu Y, Meng F, Chen Y, Yang H, Liu L, Qiao C, Chen H. Two amino acid residues in the N-terminal region of the polymerase acidic protein determine the virulence of Eurasian avian-like H1N1 swine influenza viruses in mice. J Virol 2024:e0129324. [PMID: 39212447 DOI: 10.1128/jvi.01293-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Accepted: 07/30/2024] [Indexed: 09/04/2024] Open
Abstract
Reassortant Eurasian avian-like H1N1 (rEA H1N1) viruses carrying the internal genes of H1N1/2009 virus have been circulating in pigs for more than 10 years and have caused sporadic human infections. The enhanced virulence phenotype of the rEA H1N1 viruses highlights potential risks to public health. However, the molecular mechanism underlying the viral pathogenicity of the currently circulating rEA H1N1 viruses remains unclear. In this study, we found that two naturally isolated rEA H1N1 swine influenza viruses, A/swine/Liaoning/FX38/2017 (FX38) and A/swine/Liaoning/SY72/2018 (SY72), possessed similar genetic characteristics but exhibited significantly different pathogenicity in a mouse model. Using reverse genetics, we demonstrated that amino acid mutations at positions 100 and 122 in the polymerase acidic (PA) protein had individual and synergistic effects on the polymerase activity and viral replication capacity in vitro, as well as the viral pathogenicity in mice. Furthermore, we revealed that amino acid residue 100 in PA influenced the transcription of viral RNA (vRNA) by altering the endonuclease activity, and amino acid residue 122 affected the synthesis of complementary RNA and messenger RNA by altering the RNA-binding ability and endonuclease activity of the PA protein. Taken together, we identified that two naturally occurring amino acid mutations in PA derived from H1N1/2009 virus are crucial determinants of the virulence of rEA H1N1 viruses and revealed the differential mechanism by which these two mutations affect the transcription and replication of vRNA. These findings will extend our understanding of the roles of PA in the virulence of influenza A viruses.IMPORTANCEMultiple genetic determinants are involved in the virulence of influenza A viruses. In this study, we identified two naturally occurring amino acid mutations, located at residues 100 and 122 in the polymerase acidic (PA) protein, which are associated with viral polymerase activity, replication competence, and pathogenicity in mice. In particular, we clarified the specific mechanism by which the two residues play an important role in viral transcription and replication. These findings will help to improve understanding the functions of amino acid residues in the N-terminal region of the PA protein involved in the pathogenicity of influenza A viruses.
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Affiliation(s)
- Yuying Yang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Chengzhi Xu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Naixin Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Yunfei Wan
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Yunpu Wu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Fei Meng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Yan Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Huanliang Yang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Liling Liu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Chuanling Qiao
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
| | - Hualan Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academic Agricultural Sciences, Harbin, China
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6
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Zhao L, Li S, Deng L, Zhang Y, Jiang C, Wei Y, Xia J, Ping J. Host-specific SRSF7 regulates polymerase activity and replication of influenza A virus. Microbes Infect 2024:105401. [PMID: 39134172 DOI: 10.1016/j.micinf.2024.105401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/19/2024] [Accepted: 08/01/2024] [Indexed: 08/17/2024]
Abstract
Avian influenza viruses crossing the host barrier to infect humans have caused great panic in human society and seriously threatened public health. Herein, we revealed that knockdown of SRSF7 significantly down-regulated influenza virus titers and viral protein expression. We further observed for the first time that human SRSF7, but not avian SRSF7, significantly inhibited polymerase activity (PB2627E). Molecular mapping demonstrated that amino acids 206 to 228 of human SRSF7 play a decisive role in regulating the polymerase activity, which contains the amino acid motif absent in avian SRSF7. Importantly, our results illustrated that the PB2627K-encoding influenza virus induces SRSF7 protein degradation more strongly via the lysosome pathway and not via the proteasome pathway. Functional enrichment analysis of SRSF7-related KEGG pathways indicated that SRSF7 is closely related to cell growth and death. Lastly, our results showed that knocking down SRSF7 interferes with normal polymerase activity. Taken together, our results advance our understanding of interspecies transmission and our findings point out new targets for the development of drugs preventing or treating influenza virus infection.
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Affiliation(s)
- Lingcai Zhao
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Shengmin Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Lulu Deng
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Yijia Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Chenfeng Jiang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Yurong Wei
- Xinjiang Key Laboratory of Animal Infectious Diseases, Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, 830013, China.
| | - Jun Xia
- Key Laboratory of Herbivore Disease Prevention and Control, (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, China.
| | - Jihui Ping
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Engineering Laboratory of Animal Immunity of Jiangsu Province, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, 210095, China.
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7
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Cai M, Wei Z, Hu X, Ji Y, Li S, Huang J, Jin R, Liang Q, Zhang G, Zheng Z, Gong L, Li M. The evolution, complexity, and diversity of swine influenza viruses in China: A hidden public health threat. Virology 2024; 598:110167. [PMID: 39003988 DOI: 10.1016/j.virol.2024.110167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 06/27/2024] [Accepted: 07/01/2024] [Indexed: 07/16/2024]
Abstract
Swine influenza viruses (SIVs), including H1N1, H1N2, and H3N2, have spread throughout the global pig population. Potential pandemics are a concern with the recent sporadic cross-species transmission of SIVs to humans. We collected 1421 samples from Guangdong, Fujian, Henan, Yunnan and Jiangxi provinces during 2017-2018 and isolated 29 viruses. These included 21H1N1, 5H1N2, and 3H3N2 strains. Genome analysis showed that the domestic epidemic genotypes of H1N1 were mainly G4 and G5 reassortant EA swine H1N1. These genotypes have a clear epidemic advantage. Two strains were Clade 6B.1 pdm/09H1N1, suggesting a possible pig-to-human transmission route. Notably, three new H1N2 genotypes were identified using the genomic backbones of G4 or G5 viruses for recombination. The identification of various subtypes and genotypes highlight the complexity and diversity of SIVs in China and need for continuous monitoring of SIV evolution to assess the risks and prepare for potential influenza pandemics.
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Affiliation(s)
- Mengkai Cai
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Zhi Wei
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, 510462, China
| | - Xiaokun Hu
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, 510462, China
| | - Yikuan Ji
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Shaofang Li
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Junmei Huang
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Rong Jin
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Quanming Liang
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Guihong Zhang
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, 510462, China
| | - Zezhong Zheng
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, 510462, China
| | - Lang Gong
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming, 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, 510462, China.
| | - Meidi Li
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China.
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8
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Yang J, Lan R, Chang H, Li H, Yu H, Tong Q, Liu J, Sun H. Isolation and characterization of genotype 4 Eurasian avian-like H1N1 influenza virus in pigs suffering from pneumonia. Virology 2024; 592:110009. [PMID: 38330852 DOI: 10.1016/j.virol.2024.110009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/28/2023] [Accepted: 01/24/2024] [Indexed: 02/10/2024]
Abstract
Swine influenza viruses pose ongoing threat to pork industry throughout the world. In 2023, fattening pigs from a swine farm in Inner Mongolia of China experienced influenza-like symptoms. Co-infection of influenza A virus with Pasteurella multocida was diagnosed in lung tissues of diseased pigs and a genotype 4 (G4) Eurasian avian-like (EA) H1N1 virus was isolated, which was named as A/swine/Neimenggu/0326/2023. We demonstrated the virus preferentially bound human-like SAα2,6Gal receptor. It was noteworthy that the virus possessed multiple genetic markers for mammalian adaptation in the internal genes. Animal studies showed that compared with genotype 1 (G1) EA H1N1 virus and early prevalent G4 EA H1N1 virus, A/swine/Neimenggu/0326/2023 virus exhibited increased virus shedding, enhanced replication in lungs, and caused more severe lung lesions in pigs. These findings indicate that the G4 EA H1N1 virus poses increased threat to pork industry, controlling the prevailing viruses in pigs should be promptly implemented.
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Affiliation(s)
- Jizhe Yang
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Riguo Lan
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Haoyu Chang
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Han Li
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Haili Yu
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Qi Tong
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Jinhua Liu
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Honglei Sun
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory for Prevention and Control of Avian Influenza and Other Major Poultry Diseases, Ministry of Agriculture and Rural Affairs, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
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9
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Hu Y, Jiang L, Wang G, Song Y, Shan Z, Wang X, Deng G, Shi J, Tian G, Zeng X, Liu L, Chen H, Li C. M6PR interacts with the HA2 subunit of influenza A virus to facilitate the fusion of viral and endosomal membranes. SCIENCE CHINA. LIFE SCIENCES 2024; 67:579-595. [PMID: 38038885 DOI: 10.1007/s11427-023-2471-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 10/18/2023] [Indexed: 12/02/2023]
Abstract
Influenza A virus (IAV) commandeers numerous host cellular factors for successful replication. However, very few host factors have been revealed to be involved in the fusion of viral envelope and late endosomal membranes. In this study, we identified cation-dependent mannose-6-phosphate receptor (M6PR) as a crucial host factor for the replication of IAV. We found that siRNA knockdown of M6PR expression significantly reduced the growth titers of different subtypes of IAV, and that the inhibitory effect of M6PR siRNA treatment on IAV growth was overcome by the complement of exogenously expressed M6PR. When A549 cells were treated with siRNA targeting M6PR, the nuclear accumulation of viral nucleoprotein (NP) was dramatically inhibited at early timepoints post-infection, indicating that M6PR engages in the early stage of the IAV replication cycle. By investigating the role of M6PR in the individual entry and post-entry steps of IAV replication, we found that the downregulation of M6PR expression had no effect on attachment, internalization, early endosome trafficking, or late endosome acidification. However, we found that M6PR expression was critical for the fusion of viral envelope and late endosomal membranes. Of note, M6PR interacted with the hemagglutinin (HA) protein of IAV, and further studies showed that the lumenal domain of M6PR and the ectodomain of HA2 mediated the interaction and directly promoted the fusion of the viral and late endosomal membranes, thereby facilitating IAV replication. Together, our findings highlight the importance of the M6PR-HA interaction in the fusion of viral and late endosomal membranes during IAV replication.
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Affiliation(s)
- Yuzhen Hu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Li Jiang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Guangwen Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Yangming Song
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Zhibo Shan
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Xuyuan Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Guohua Deng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Jianzhong Shi
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Guobin Tian
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Xianying Zeng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Liling Liu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China
| | - Hualan Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China.
| | - Chengjun Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, 150069, China.
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10
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Wang Z, He Y, Wang W, Tian Y, Ge C, Jia F, Zhang T, Zhang G, Wang M, Gong J, Huang H, Wang J, Shi C, Yang W, Cao X, Zeng Y, Wang N, Qian A, Jiang Y, Yang G, Wang C. A novel "prime and pull" strategy mediated by the combination of two dendritic cell-targeting designs induced protective lung tissue-resident memory T cells against H1N1 influenza virus challenge. J Nanobiotechnology 2023; 21:479. [PMID: 38093320 PMCID: PMC10717309 DOI: 10.1186/s12951-023-02229-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 11/20/2023] [Indexed: 12/17/2023] Open
Abstract
Vaccination is still the most promising strategy for combating influenza virus pandemics. However, the highly variable characteristics of influenza virus make it difficult to develop antibody-based universal vaccines, until now. Lung tissue-resident memory T cells (TRM), which actively survey tissues for signs of infection and react rapidly to eliminate infected cells without the need for a systemic immune reaction, have recently drawn increasing attention towards the development of a universal influenza vaccine. We previously designed a sequential immunization strategy based on orally administered Salmonella vectored vaccine candidates. To further improve our vaccine design, in this study, we used two different dendritic cell (DC)-targeting strategies, including a single chain variable fragment (scFv) targeting the surface marker DC-CD11c and DC targeting peptide 3 (DCpep3). Oral immunization with Salmonella harboring plasmid pYL230 (S230), which displayed scFv-CD11c on the bacterial surface, induced dramatic production of spleen effector memory T cells (TEM). On the other hand, intranasal boost immunization using purified DCpep3-decorated 3M2e-ferritin nanoparticles in mice orally immunized twice with S230 (S230inDC) significantly stimulated the differentiation of lung CD11b+ DCs, increased intracellular IL-17 production in lung CD4+ T cells and elevated chemokine production in lung sections, such as CXCL13 and CXCL15, as determined by RNAseq and qRT‒PCR assays, resulting in significantly increased percentages of lung TRMs, which could provide efficient protection against influenza virus challenge. The dual DC targeting strategy, together with the sequential immunization approach described in this study, provides us with a novel "prime and pull" strategy for addressing the production of protective TRM cells in vaccine design.
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Affiliation(s)
- Zhannan Wang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Yingkai He
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Wenfeng Wang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Yawen Tian
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Chongbo Ge
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Futing Jia
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Tongyu Zhang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Gerui Zhang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Mingyue Wang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Jinshuo Gong
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Haibin Huang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Jianzhong Wang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Chunwei Shi
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Wentao Yang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Xin Cao
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Yan Zeng
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Nan Wang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Aidong Qian
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China
| | - Yanlong Jiang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China.
| | - Guilian Yang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China.
| | - Chunfeng Wang
- College of Veterinary Medicine, Jilin Provincial Engineering Research Center of Animal Probiotics, Jilin Provincial Key Laboratory of Animal Microecology and Healthy Breeding, Engineering Research Center of Microecological Vaccines (Drugs) for Major Animal Diseases, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China.
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11
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Mai Z, Cai M, Hu X, Li M, Ji Y, Li S, Huang J, Liang Q, Ji C, Yi H, Zhang G, Gong L. Protection efficacy of the H1 and H3 bivalent virus-like particle vaccine against swine influenza virus infection. Vet Microbiol 2023; 280:109719. [PMID: 36940524 DOI: 10.1016/j.vetmic.2023.109719] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 03/03/2023] [Accepted: 03/09/2023] [Indexed: 03/12/2023]
Abstract
Swine influenza (SI) is widely prevalent in pig herds worldwide, causing huge economic losses to the pig industry and public health risks. The traditional inactivated swine influenza virus (SIV) vaccines are produced in chicken embryos, and egg-adaptive substitutions that occur during production process can impact vaccine effectiveness. Thus, developing an SI vaccine that can decrease the dependence on chicken embryos with a high immunogenicity is urgently needed. In this study, the utility of insect cell-derived SIV H1 and H3 bivalent virus-like particle (VLP) vaccines containing HA and M1 proteins of Eurasian avian-like (EA) H1N1 SIV and recent human-like H3N2 SIV were assessed in piglets. Antibody levels were monitored, and the protection efficacy of the vaccine after viral challenge was evaluated and compared with the inactivated vaccine. Results show that piglets produced high hemagglutination inhibition (HI) titers of antibodies against H1 and H3 SIV after immunization with SIV VLP vaccine. The neutralizing antibody level was significantly higher in SIV VLP vaccine than in the inactivated vaccine at 6 weeks post vaccination (p < 0.05). Furthermore, piglets immunized with the SIV VLP vaccine were protected against the challenge of H1 and H3 SIV, displaying inhibition of viral replication in piglets, and reduced lung damage. These results show that SIV VLP vaccine has good application prospects, thus laying the foundation for further research and commercialization of SIV VLP vaccine.
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Affiliation(s)
- Zhanzhuo Mai
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou 510462, China
| | - Mengkai Cai
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510462, China; Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Xiaokun Hu
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou 510462, China
| | - Meidi Li
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Yikuan Ji
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Shaofang Li
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Junmei Huang
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Quanming Liang
- Meizhou Engineering Research Center for Veterinary Medicine and Natural Medicine, Guangdong Meizhou Vocational and Technical College, Meizhou 514028, China
| | - Chihai Ji
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou 510462, China
| | - Heyou Yi
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou 510462, China
| | - Guihong Zhang
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou 510462, China.
| | - Lang Gong
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510462, China; Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Maoming 525000, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou 510462, China.
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12
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Zhu H, Li X, Chen H, Qian P. Genetic characterization and pathogenicity of a Eurasian avian-like H1N1 swine influenza reassortant virus. Virol J 2022; 19:205. [PMID: 36461007 PMCID: PMC9716174 DOI: 10.1186/s12985-022-01936-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 11/27/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Swine influenza viruses (SIV), considered the "mixing vessels" of influenza viruses, posed a significant threat to global health systems and are dangerous pathogens. Eurasian avian-like H1N1(EA-H1N1) viruses have become predominant in swine populations in China since 2016. METHODS Lung tissue samples were obtained from pregnant sows with miscarriage and respiratory disease in Heilongjiang province, and pathogens were detected by Next-generation sequencing (NGS) and PCR. The nucleic acid of isolates was extracted to detect SIV by RT-PCR. Then, SIV-positive samples were inoculated into embryonated chicken eggs. After successive generations, the isolates were identified by RT-PCR, IFA, WB and TEM. The genetic evolution and pathogenicity to mice of A/swine/Heilongjiang/GN/2020 were analyzed. RESULTS The major pathogens were influenza virus (31%), Simbu orthobunyavirus (15%) and Jingmen tick virus (8%) by NGS, while the pathogen that can cause miscarriage and respiratory disease was influenza virus. The SIV(A/swine/Heilongjiang/GN/2020) with hemagglutination activity was isolated from lung samples and was successfully identified by RT-PCR, IFA, WB and TEM. Homology and phylogenetic analysis showed that A/swine/Heilongjiang/GN/2020 is most closely related to A/swine/Henan/SN/10/2018 and belonged to EA-H1N1. Pathogenicity in mice showed that the EA-H1N1 could cause lethal or exhibit extrapulmonary virus spread and cause severe damage to respiratory tracts effectively proliferating in lung and trachea. CONCLUSION A/swine/Heilongjiang/GN/2020 (EA-H1N1) virus was isolated from pregnant sows with miscarriage and respiratory disease in Heilongjiang province, China. Clinical signs associated with influenza infection were observed during 14 days with A/swine/Heilongjiang/GN/2020 infected mice. These data suggest that A/swine/Heilongjiang/GN/2020 (EA-H1N1) had high pathogenicity and could be systemic spread in mice.
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Affiliation(s)
- Hechao Zhu
- grid.35155.370000 0004 1790 4137State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070 Hubei China ,grid.35155.370000 0004 1790 4137Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070 Hubei China
| | - Xiangmin Li
- grid.35155.370000 0004 1790 4137State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070 Hubei China ,grid.35155.370000 0004 1790 4137College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070 Hubei China ,grid.35155.370000 0004 1790 4137Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070 Hubei China
| | - Huanchun Chen
- grid.35155.370000 0004 1790 4137State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070 Hubei China ,grid.35155.370000 0004 1790 4137College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070 Hubei China ,grid.35155.370000 0004 1790 4137Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070 Hubei China
| | - Ping Qian
- grid.35155.370000 0004 1790 4137State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070 Hubei China ,grid.35155.370000 0004 1790 4137College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070 Hubei China ,grid.35155.370000 0004 1790 4137Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, 430070 Hubei China
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