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He D, Wang X, Wu H, Cai K, Song X, Wang X, Hu J, Hu S, Liu X, Ding C, Peng D, Su S, Gu M, Liu X. Characterization of Conserved Evolution in H7N9 Avian Influenza Virus Prior Mass Vaccination. Virulence 2024; 15:2395837. [PMID: 39240070 PMCID: PMC11382709 DOI: 10.1080/21505594.2024.2395837] [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: 02/12/2024] [Revised: 07/09/2024] [Accepted: 07/30/2024] [Indexed: 09/07/2024] Open
Abstract
Vaccination is crucial for the prevention and mitigation of avian influenza infections in China. The inactivated H7N9 vaccine, when administered to poultry, significantly lowers the risk of infection among both poultry and humans, while also markedly decreasing the prevalence of H7N9 detections. Highly pathogenic (HP) H7N9 viruses occasionally appear, whereas their low pathogenicity (LP) counterparts have been scarcely detected since 2018. However, these contributing factors remain poorly understood. We conducted an exploratory investigation of the mechanics via the application of comprehensive bioinformatic approaches. We delineated the Yangtze River Delta (YRD) H7N9 lineage into 5 clades (YRD-A to E). Our findings highlight the emergence and peak occurrence of the LP H7N9-containing YRD-E clade during the 5th epidemic wave in China's primary poultry farming areas. A more effective control of LP H7N9 through vaccination was observed compared to that of its HP H7N9 counterpart. YRD-E exhibited a tardy evolutionary trajectory, denoted by the conservation of its genetic and antigenic variation. Our analysis of YRD-E revealed only minimal amino acid substitutions along its phylogenetic tree and a few selective sweep mutations since 2016. In terms of epidemic fitness, the YRD-E was measured to be lower than that of the HP variants. Collectively, these findings underscore the conserved evolutionary patterns distinguishing the YRD-E. Given the conservation presented in its evolutionary patterns, the YRD-E LP H7N9 is hypothesized to be associated with a reduction following the mass vaccination in a relatively short period owing to its lower probability of antigenic variation that might affect vaccine efficiency.
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Affiliation(s)
- Dongchang He
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- College of Veterinary Medicine, Jiangsu Agri-animal Husbandry Vocational College, Taizhou, China
| | - Xiyue Wang
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Huiguang Wu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Kairui Cai
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiaoli Song
- Animal Epidemic Prevention Office, Jiangsu Provincial Animal Disease Control Center, Nanjing, Jiangsu, China
| | - Xiaoquan Wang
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Jiao Hu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Shunlin Hu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Xiaowen Liu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Chan Ding
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Daxin Peng
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Shuo Su
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Min Gu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Xiufan Liu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
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Luczo JM, Spackman E. Epitopes in the HA and NA of H5 and H7 avian influenza viruses that are important for antigenic drift. FEMS Microbiol Rev 2024; 48:fuae014. [PMID: 38734891 PMCID: PMC11149724 DOI: 10.1093/femsre/fuae014] [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: 09/20/2023] [Revised: 04/23/2024] [Accepted: 05/10/2024] [Indexed: 05/13/2024] Open
Abstract
Avian influenza viruses evolve antigenically to evade host immunity. Two influenza A virus surface glycoproteins, the haemagglutinin and neuraminidase, are the major targets of host immunity and undergo antigenic drift in response to host pre-existing humoral and cellular immune responses. Specific sites have been identified as important epitopes in prominent subtypes such as H5 and H7, which are of animal and public health significance due to their panzootic and pandemic potential. The haemagglutinin is the immunodominant immunogen, it has been extensively studied, and the antigenic reactivity is closely monitored to ensure candidate vaccine viruses are protective. More recently, the neuraminidase has received increasing attention for its role as a protective immunogen. The neuraminidase is expressed at a lower abundance than the haemagglutinin on the virus surface but does elicit a robust antibody response. This review aims to compile the current information on haemagglutinin and neuraminidase epitopes and immune escape mutants of H5 and H7 highly pathogenic avian influenza viruses. Understanding the evolution of immune escape mutants and the location of epitopes is critical for identification of vaccine strains and development of broadly reactive vaccines that can be utilized in humans and animals.
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Affiliation(s)
- Jasmina M Luczo
- Australian Animal Health Laboratory, Australian Centre for Disease Preparedness, Commonwealth Scientific and Industrial Research Organisation, East Geelong, Victoria 3219, Australia
| | - Erica Spackman
- Exotic & Emerging Avian Viral Diseases Research, Southeast Poultry Research Laboratory, United States National Poultry Research Center, Agricultural Research Service, United States Department of Agriculture, Athens, GA 30605, United States
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Yin J, Liu H, Chen Y, Zhou J, Liu Y, Liang Z, Zhu X, Liu H, Ding P, Liu E, Zhang Y, Wu S, Wang A. Development and application of a high-sensitivity immunochromatographic test strip for detecting pseudorabies virus. Front Microbiol 2024; 15:1399123. [PMID: 38765685 PMCID: PMC11099248 DOI: 10.3389/fmicb.2024.1399123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 04/16/2024] [Indexed: 05/22/2024] Open
Abstract
Introduction Pseudorabies (PR) is a multi-animal comorbid disease caused by pseudorabies virus (PRV), which are naturally found in pigs. At the end of 2011, the emergence of PRV variant strains in many provinces in China had caused huge economic losses to pig farms. Rapid detection diagnosis of pigs infected with the PRV variant helps prevent outbreaks of PR. The immunochromatography test strip with colloidal gold nanoparticles is often used in clinical testing due to its low cost and high throughput. Methods This study was designed to produce monoclonal antibodies targeting PRV through immunization of mice using the eukaryotic system to express the gE glycoprotein. Subsequently, paired monoclonal antibodies were screened based on their sensitivity and specificity for use in the preparation of test strips. Results and discussion The strip prepared in this study was highly specific, only PRV was detected, and there was no cross-reactivity with glycoprotein gB, glycoprotein gC, glycoprotein gD, and glycoprotein gE of herpes simplex virus and varicellazoster virus, porcine epidemic diarrhea virus, Senecavirus A, classical swine fever virus, porcine reproductive and respiratory syndrome virus, and porcine parvovirus. Moreover, it demonstrated high sensitivity with a detection limit of 1.336 × 103 copies/μL (the number of viral genome copies per microliter); the coincidence rate with the RT-PCR detection method was 96.4%. The strip developed by our laboratory provides an effective method for monitoring PRV infection and controlling of PR vaccine quality.
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Affiliation(s)
- Jiajia Yin
- Longhu Laboratory, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Huimin Liu
- Longhu Laboratory, Zhengzhou, China
- College of Basic Science, Zhengzhou University of Technology, Zhengzhou, Henan, China
| | - Yumei Chen
- Longhu Laboratory, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Jingming Zhou
- Longhu Laboratory, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Yankai Liu
- Longhu Laboratory, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Zhenglun Liang
- Longhu Laboratory, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Xifang Zhu
- Longhu Laboratory, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Hongliang Liu
- Longhu Laboratory, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Peiyang Ding
- Longhu Laboratory, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Enping Liu
- Longhu Laboratory, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Ying Zhang
- Longhu Laboratory, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Sixuan Wu
- Longhu Laboratory, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
| | - Aiping Wang
- Longhu Laboratory, Zhengzhou, China
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
- Henan Provincial Key Laboratory of Immunobiology, Zhengzhou, China
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He D, Gu J, Gu M, Wu H, Li J, Zhan T, Chen Y, Xu N, Ge Z, Wang G, Hao X, Wang X, Hu J, Hu Z, Hu S, Liu X, Liu X. Genetic and antigenic diversity of H7N9 highly pathogenic avian influenza virus in China. INFECTION GENETICS AND EVOLUTION 2021; 93:104993. [PMID: 34242774 DOI: 10.1016/j.meegid.2021.104993] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/01/2021] [Accepted: 07/04/2021] [Indexed: 01/10/2023]
Abstract
Avian influenza virus (AIV) H7N9 that emerged in 2013 in eastern China is a novel zoonotic agent mainly circulating in poultry without clinical signs but causing severe disease with high fatality in humans in more than 5 waves. Since the emergence of highly pathogenic (HP) H7N9 variants in 2016, it has induced heavy losses in the poultry industry leading to the implementation of an intensive nationwide vaccination program at the end of wave 5 (September 2017). To characterize the ongoing evolution of H7N9 AIV, we conducted analyses of H7N9 glycoprotein genes obtained from 2013 to 2019. Bayesian analyses revealed a decreasing population size of HP H7N9 variants post wave 5. Phylogenetic topologies revealed that two novel small subclades were formed and carried several fixed amino acid mutations that were along HA and NA phylogenetic trees since wave 5. Some of the mutations were located at antigenic sites or receptor binding sites. The antigenic analysis may reveal a significant antigenic drift evaluated by hemagglutinin inhibition (HI) assay and the antigenicity of H7N9 AIV might evolute in large leaps in wave 7. Molecular simulations found that the mutations (V135T, S145P, and L226Q) around the HA receptor pocket increased the affinity to α2,3-linked sialic acid (SIA) while decreased to α2,6-linked SIA. Altered affinity may suggest that HP H7N9 variations aggravate the pathogenicity to poultry but lessen the threat to public health. Selection analyses showed that the HP H7N9 AIV experienced an increasing selection pressure since wave 5, and the national implementation of vaccination might intensify the role of natural selection during the evolution waves 6 and 7. In summary, our data provide important insights about the genetic and antigenic diversity of circulating HP H7N9 viruses from 2017 to 2019. Enhanced surveillance is urgently warranted to understand the current situation of HP H7N9 AIV.
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Affiliation(s)
- Dongchang He
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Jinyuan Gu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Min Gu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Huiguang Wu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Juan Li
- Key Laboratory of Etiology and Epidemiology of Emerging Infectious Diseases in Universities of Shandong, Shandong First Medical University, Shandong Academy of Medical Sciences, Tai'an 271000, China
| | - Tiansong Zhan
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Yu Chen
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Naiqing Xu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zhichuang Ge
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Guoqing Wang
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Xiaoli Hao
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China
| | - Xiaoquan Wang
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Jiao Hu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Zenglei Hu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Shunlin Hu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Xiaowen Liu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Xiufan Liu
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.
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5
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Hu Z, Zhao J, Shi L, Hu J, Hu S, Liu X. Identification of the dominant non-neutralizing epitope in the haemagglutinin of H7N9 avian influenza virus. Virus Res 2021; 298:198409. [PMID: 33819520 DOI: 10.1016/j.virusres.2021.198409] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 03/25/2021] [Accepted: 03/29/2021] [Indexed: 12/31/2022]
Abstract
H7N9 avian influenza vaccines induce high levels of non-neutralizing (nonNeu) antibodies against the haemagglutinin (HA). However, the antigenic epitopes underlying this particular antibody response are still undefined. In this study, a panel of 13 monoclonal antibodies (mAbs) against the HA protein of H7N9 virus was generated and 12 of them had no hemagglutination inhibition and virus neutralizing activities. One linear epitope in the stalk (373-TAA-375) recognized by three mAbs and one conformational epitope in the head (220Q-225S-227G) targeted by one mAb were identified using peptide-based enzyme-linked immunosorbent assay (ELISA) and biopanning of phage display random peptide library. In addition, competition ELISA revealed that the mAb targeting the head epitope strongly inhibited HA-binding of chicken nonNeu anti-H7N9 sera, whereas lower inhibition was observed for chicken neutralizing antisera, indicating the immunodominance of this epitope in the elicitation of nonNeu antibodies. Moreover, the stalk epitope is conserved among the H1-H17 subtypes and the mAb recognizing this epitope exhibited cross-reactivity with different subtypes. In conclusion, two novel nonNeu epitopes in H7N9 HA were identified, and an epitope in the head was identified as an immunodominant epitope underlying the induction of nonNeu H7N9 antibodies. Our results add new knowledge to the molecular basis for antibody immunity against H7N9 vaccines and provide useful implications for vaccine design and modification.
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Affiliation(s)
- Zenglei Hu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China; Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Jiangyan Zhao
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Lei Shi
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Jiao Hu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Shunlin Hu
- Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Xiufan Liu
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China; Animal Infectious Disease Laboratory, School of Veterinary Medicine, Yangzhou University, Yangzhou, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China.
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6
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Li G, Wang A, Chen Y, Sun Y, Du Y, Wang X, Ding P, Jia R, Wang Y, Zhang G. Development of a Colloidal Gold-Based Immunochromatographic Strip for Rapid Detection of Severe Acute Respiratory Syndrome Coronavirus 2 Spike Protein. Front Immunol 2021; 12:635677. [PMID: 33777026 PMCID: PMC7992422 DOI: 10.3389/fimmu.2021.635677] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/12/2021] [Indexed: 11/17/2022] Open
Abstract
The outbreak and worldwide pandemic of the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have a significant impact on global economy and human health. In order to reduce the disease spread, 16 monoclonal antibodies (McAbs) again SARS-CoV-2 were generated by immunized mice with the spike protein receptor binding domain (RBD), which was expressed in Chinese hamster ovary cell (CHO). A colloidal gold-based immunochromatographic strip was developed with two McAbs to detect SARS-CoV-2 spike protein, which can play a potential role in monitoring vaccine quality. The strip is highly specific, detecting only SARS-CoV-2 spike protein, and does not show any non-specific reactions with syndrome coronavirus (SARS-CoV), Middle East respiratory syndrome coronavirus (MERS-CoV) and other coronavirus and influenza viruses. The strip detected subunit vaccine in our laboratory with a detection limit of spike protein of 62.5 ng/mL. This strip provides an effective method in monitoring vaccine quality by detecting the antigen content of spike protein.
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Affiliation(s)
- Ge Li
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China.,School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Aiping Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Yumei Chen
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Yaning Sun
- Henan Zhongze Biological Engineering Co., Zhengzhou, China
| | - Yongkun Du
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Xun Wang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Peiyang Ding
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Rui Jia
- Henan Zhongze Biological Engineering Co., Zhengzhou, China
| | - Yanwei Wang
- Henan Zhongze Biological Engineering Co., Zhengzhou, China
| | - Gaiping Zhang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China.,School of Life Sciences, Zhengzhou University, Zhengzhou, China
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7
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Wang Q, Xu K, Xie W, Yang L, Chen H, Shi N, Bao C, Huang H, Zhang X, Liao Y, Jin H. Seroprevalence of H7N9 infection among humans: A systematic review and meta-analysis. Influenza Other Respir Viruses 2020; 14:587-595. [PMID: 32157809 PMCID: PMC7431636 DOI: 10.1111/irv.12736] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 12/27/2019] [Accepted: 02/19/2020] [Indexed: 12/12/2022] Open
Abstract
In spring 2013, a novel avian-origin influenza A (H7N9) virus emerged in mainland China. The burden of H7N9 infection was estimated based on systematic review and meta-analysis. The systematic search for available literature was conducted using Chinese and English databases. We calculated the pooled seroprevalence of H7N9 infection and its 95% confidence interval by using Freeman-Tukey double arcsine transformation. Out of 16 890 records found using Chinese and English databases, 54 articles were included in the meta-analysis. These included studies of a total of 64 107 individuals. The pooled seroprevalence of H7N9 infection among humans was 0.122% (95% CI: 0.023, 0.275). In high-risk populations, the highest pooled seroprevalence was observed among close contacts (1.075%, 95% CI: 0.000, 4.357). The seroprevalence among general population was (0.077%, 95% CI: 0.011, 0.180). Our study discovered that asymptomatic infection of H7N9 virus did occur, even if the seroprevalence among humans was low.
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Affiliation(s)
- Qiang Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Southeast University, Nanjing, China.,Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Ke Xu
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Weihua Xie
- Department of Epidemiology and Health Statistics, School of Public Health, Southeast University, Nanjing, China.,Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Liuqing Yang
- Department of Epidemiology and Health Statistics, School of Public Health, Southeast University, Nanjing, China.,Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Haiyan Chen
- Department of Laboratory Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Naiyang Shi
- Department of Epidemiology and Health Statistics, School of Public Health, Southeast University, Nanjing, China.,Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Changjun Bao
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Haodi Huang
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Xuefeng Zhang
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
| | - Yilan Liao
- The State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Hui Jin
- Department of Epidemiology and Health Statistics, School of Public Health, Southeast University, Nanjing, China.,Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
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8
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Le KT, Okamatsu M, Nguyen LT, Matsuno K, Chu DH, Tien TN, Le TT, Kida H, Sakoda Y. Genetic and antigenic characterization of the first H7N7 low pathogenic avian influenza viruses isolated in Vietnam. INFECTION GENETICS AND EVOLUTION 2019; 78:104117. [PMID: 31760087 DOI: 10.1016/j.meegid.2019.104117] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 11/07/2019] [Accepted: 11/11/2019] [Indexed: 01/31/2023]
Abstract
During the annual surveillance of avian influenza viruses (AIVs) in Vietnam in 2018, three H7N7 AIV isolates were identified in domestic ducks in a single flock in Vinh Long province. The present study is the first documented report of H7N7 virus isolates in Vietnam and aimed to characterize these viruses, both genetically and antigenically. Deduced amino acid sequences for the hemagglutinins (HAs) indicated a low pathogenicity of these viruses in chickens. Phylogenetic analysis revealed that the H7 HA genes of these isolates were closely related to each other and belonged to the European-Asian sublineage, together with those of H7N3 viruses isolated from ducks in Cambodia during 2017. They were not genetically related to those of Chinese H7N9 or H7N1 viruses that were previously detected in Vietnam during 2012. Interestingly, the M genes of the two H7N7 virus isolates were phylogenetically classified into distinct groups, suggesting an ongoing reassortment event in domestic ducks because they were isolated from the same flock. These H7N7 viruses exhibited somewhat different antigenic characteristics compared with other representative H7 low pathogenic AIVs. Surprisingly, the antigenicity of Vietnamese H7N7 viruses is similar to Chinese H7N9 highly pathogenic AIV. The findings of this study suggest that H7N7 viruses may be undergoing reassortment and antigenic diversification in poultry flocks in Vietnam. The silent spread of Vietnamese H7N7 viruses in chickens may lead to acquire high pathogenicity in chickens although the zoonotic potential of the viruses seems to be low since these viruses retain typical avian-specific motifs in the receptor-binding site in the HA and there is no mutation related to mammalian adaptation in PB2 gene. Thus, these results highlight the need for continuous and intensive surveillance of avian influenza in Vietnam, targeting not only highly pathogenic AIVs but also low pathogenic viruses.
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Affiliation(s)
- Kien Trung Le
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kitaku, Sapporo, Hokkaido 060-0818, Japan
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kitaku, Sapporo, Hokkaido 060-0818, Japan
| | - Lam Thanh Nguyen
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kitaku, Sapporo, Hokkaido 060-0818, Japan; Department of Veterinary Medicine, College of Agriculture, Can Tho University, Can Tho 900000, Viet Nam
| | - Keita Matsuno
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kitaku, Sapporo, Hokkaido 060-0818, Japan; Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido 001-0020, Japan
| | - Duc-Huy Chu
- Department of Animal Health, Ministry of Agriculture and Rural Development, Ha Noi 115-19, Viet Nam
| | - Tien Ngoc Tien
- Regional Animal Health Office VII, Department of Animal Health, Ministry of Agriculture and Rural Development, Can Tho 900000, Viet Nam
| | - Tung Thanh Le
- Sub-Departments of Animal Health, Ministry of Agriculture and Rural Development, Vinh Long 890000, Viet Nam
| | - Hiroshi Kida
- Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido 001-0020, Japan; Research Center for Zoonosis Control, Hokkaido University, Kita-20 Nishi-10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Faculty of Veterinary Medicine, Hokkaido University, Kita-18 Nishi-9, Kitaku, Sapporo, Hokkaido 060-0818, Japan; Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Hokkaido 001-0020, Japan.
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9
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Nakayama M, Uchida Y, Shibata A, Kobayashi Y, Mine J, Takemae N, Tsunekuni R, Tanikawa T, Harada R, Osaka H, Saito T. A novel H7N3 reassortant originating from the zoonotic H7N9 highly pathogenic avian influenza viruses that has adapted to ducks. Transbound Emerg Dis 2019; 66:2342-2352. [PMID: 31293102 DOI: 10.1111/tbed.13291] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 06/03/2019] [Accepted: 06/30/2019] [Indexed: 12/17/2022]
Abstract
The first human case of zoonotic H7N9 avian influenza virus (AIV) infection was reported in March 2013 in China. This virus continues to circulate in poultry in China while mutating to highly pathogenic AIVs (HPAIVs). Through monitoring at airports in Japan, a novel H7N3 reassortant of the zoonotic H7N9 HPAIVs, A/duck/Japan/AQ-HE30-1/2018 (HE30-1), was detected in a poultry meat product illegally brought by a passenger from China into Japan. We analysed the genetic, pathogenic and antigenic characteristics of HE30-1 by comparing it with previous zoonotic H7N9 AIVs and their reassortants. Phylogenetic analysis of the entire HE30-1 genomic sequence revealed that it comprised at least three different sources; the HA (H7), PB1, PA, NP, M and NS segments of HE30-1 were directly derived from H7N9 AIVs, whereas the NA (N3) and PB2 segments of HE30-1 were unrelated to zoonotic H7N9. Experimental infection revealed that HE30-1 was lethal in chickens but not in domestic or mallard ducks. HE30-1 was shed from and replicated in domestic and mallard ducks and chickens, whereas previous zoonotic H7N9 AIVs have not adapted well to ducks. This finding suggests the possibility that HE30-1 may disseminate to remote area by wild bird migration once it establishes in wild bird population. A haemagglutination-inhibition assay indicated that antigenic drift has occurred among the reassortants of zoonotic H7N9 AIVs; HE30-1 showed similar antigenicity to some of those H7N9 AIVs, suggesting it might be prevented by the H5/H7 inactivated vaccine that was introduced in China in 2017. Our study reports the emergence of a new reassortant of zoonotic H7N9 AIVs with novel viral characteristics and warns of the challenge we still face to control the zoonotic H7N9 AIVs and their reassortants.
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Affiliation(s)
- Momoko Nakayama
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Yuko Uchida
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Akihiro Shibata
- Exotic Disease Inspection Division, Laboratory Department, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Tokoname, Japan
| | - Yoshifumi Kobayashi
- Pathological and Physiochemical Examination Division, Laboratory Department, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Yokohama, Japan
| | - Junki Mine
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Nobuhiro Takemae
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Ryota Tsunekuni
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Taichiro Tanikawa
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Rieko Harada
- Exotic Disease Inspection Division, Laboratory Department, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Tokoname, Japan
| | - Hiroyuki Osaka
- Exotic Disease Inspection Division, Laboratory Department, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Tokoname, Japan
| | - Takehiko Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), Tsukuba, Japan.,United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
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10
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Xiao YL, Ren L, Zhang X, Qi L, Kash JC, Xiao Y, Wu F, Wang J, Taubenberger JK. Deep Sequencing of H7N9 Influenza A Viruses from 16 Infected Patients from 2013 to 2015 in Shanghai Reveals Genetic Diversity and Antigenic Drift. mSphere 2018; 3:e00462-18. [PMID: 30232169 PMCID: PMC6147129 DOI: 10.1128/mspheredirect.00462-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 08/28/2018] [Indexed: 11/20/2022] Open
Abstract
Influenza A virus (IAV) infections are a major public health concern, including annual epidemics, epizootic outbreaks, and pandemics. A significant IAV epizootic outbreak was the H7N9 avian influenza A outbreak in China, which was first detected in 2013 and which has spread over 5 waves from 2013 to 2017, causing human infections in many different Chinese provinces. Here, RNA from primary clinical throat swab samples from 20 H7N9-infected local patients with different clinical outcomes, who were admitted and treated at one hospital in Shanghai, China, from April 2013 to April 2015, was analyzed. Whole-transcriptome amplification, with positive enrichment of IAV RNA, was performed, all 20 samples were subjected to deep sequencing, and data from 16 samples were analyzed in detail. Many single-nucleotide polymorphisms, including ones not previously reported, and many nonsynonymous changes that could affect hemagglutinin head and stalk antibody binding epitopes were observed. Minor populations representing viral quasispecies, including nonsynonymous hemagglutinin changes shared by antigenically variant H7N9 clades identified in the most recent wave of H7N9 infections in 2016 to 2017, were also identified.IMPORTANCE H7N9 subtype avian influenza viruses caused infections in over 1,400 humans from 2013 to 2017 and resulted in almost 600 deaths. It is important to understand how avian influenza viruses infect and cause disease in humans and to assess their potential for efficient person-to-person transmission. In this study, we used deep sequencing of primary clinical material to assess the evolution and potential for human adaptation of H7N9 influenza viruses.
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Affiliation(s)
- Yong-Li Xiao
- Viral Pathogenesis and Evolution Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Lili Ren
- MOH Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory, Institute of Pathogen Biology, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Xi Zhang
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, People's Republic of China
| | - Li Qi
- Viral Pathogenesis and Evolution Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - John C Kash
- Viral Pathogenesis and Evolution Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Yan Xiao
- MOH Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory, Institute of Pathogen Biology, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Fan Wu
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, People's Republic of China
| | - Jianwei Wang
- MOH Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory, Institute of Pathogen Biology, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Jeffery K Taubenberger
- Viral Pathogenesis and Evolution Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
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11
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Sun Z, Shi B, Meng F, Ma R, Hu Q, Qin T, Chen S, Peng D, Liu X. Development of a Colloidal Gold-Based Immunochromatographic Strip for Rapid Detection of H7N9 Influenza Viruses. Front Microbiol 2018; 9:2069. [PMID: 30233542 PMCID: PMC6127252 DOI: 10.3389/fmicb.2018.02069] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 08/14/2018] [Indexed: 01/01/2023] Open
Abstract
Both high- and low-pathogenic H7N9 influenza A virus (IAV) infections have been found in human and poultry in China, and most human cases are related to contact with infected poultry. It is necessary to develop a rapid and simple method to detect H7N9 IAV in poultry. In this study, 13 monoclonal antibodies (McAbs) against the H7N9 IAV hemagglutinin were developed, and three critical amino acid epitopes (198, 227, 235) were identified based on the reactivity of these variant and wild-type strains with the McAbs. We developed an immunochromatographic assay for H7N9 AIVs using two McAbs recognizing the epitope position 227 and 235. The assay had good specificity, stability, and sensitivity, with a detection limit of swab and tissue samples of 2.5 log10EID50/0.1 mL, which is suitable for the analysis of clinical samples. This assay provides an effective method for the rapid detection of H7N9 AIVs in poultry.
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Affiliation(s)
- Zhihao Sun
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China
| | - Baolan Shi
- Sinopharm Yangzhou Vac Biological Engineering Co., Ltd., Yangzhou, China
| | - Feifei Meng
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China
| | - Ruonan Ma
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China
| | - Qingyun Hu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China
| | - Tao Qin
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture and Agricultural-Products, Yangzhou, China
| | - Sujuan Chen
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture and Agricultural-Products, Yangzhou, China
| | - Daxin Peng
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture and Agricultural-Products, Yangzhou, China.,College of Veterinary Medicine, Cagayan State University, Tuguegarao, Philippines
| | - Xiufan Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China.,Jiangsu Co-innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.,Jiangsu Research Centre of Engineering and Technology for Prevention and Control of Poultry Disease, Yangzhou, China.,Joint Laboratory Safety of International Cooperation of Agriculture and Agricultural-Products, Yangzhou, China
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12
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Yao Y, Zhang T, Yang W, Shao Z, He B, Chen X, Wu L, Jin E, Liu H, Chen J, Chen J. Avian Influenza A (H7N9) Virus in a Wild Land Bird in Central China, Late 2015. Virol Sin 2018; 33:96-99. [PMID: 29508189 DOI: 10.1007/s12250-018-0001-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 08/30/2017] [Indexed: 11/27/2022] Open
Affiliation(s)
- Yanfeng Yao
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, 430208, China
| | - Tao Zhang
- Department of Earth System Science, Tsinghua University, Beijing, 100084, China
| | - Wenhai Yang
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, 430208, China
| | - Zhiyong Shao
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, 430208, China
| | - Bin He
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, 430208, China
| | - Xiabing Chen
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, 430208, China
| | - Lijun Wu
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, 430208, China
| | - Erguang Jin
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, 430208, China
| | - Haizhou Liu
- CAS Key Laboratory of Special Pathogens and Biosafety, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Jianjun Chen
- CAS Key Laboratory of Special Pathogens and Biosafety, Chinese Academy of Sciences, Wuhan, 430071, China.
| | - Jie Chen
- Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Science and Technology, Wuhan, 430208, China.
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13
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Ou H, Yao W, Wu N, Wang FXC, Weng T, Han C, Lu X, Yu D, Wu H, Cheng L, Chen H, Yao H, Li L. Preclinical evaluation of the safety and pathogenicity of a live attenuated recombinant influenza A/H7N9 seed strain and corresponding MF59-adjuvanted split vaccine. Oncotarget 2018; 7:81012-81025. [PMID: 27768591 PMCID: PMC5348373 DOI: 10.18632/oncotarget.12746] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 10/12/2016] [Indexed: 12/03/2022] Open
Abstract
Developing a safe and effective H7N9 influenza vaccine was initiated in early spring 2013, following human infections with a novel avian influenza A (H7N9) virus. In this study, a candidate H7N9 vaccine seed strain is produced using reverse genetics, with HA and NA derived from a human H7N9 virus and the remaining genes from the PR8 backbone virus which grows well in eggs. We verified that the virulence and transmissibility of the recombinant H7N9 vaccine seed strain were decreased as compared to wild-type H7N9 virus, to levels comparable with PR8. Using the seed virus, we produced a monovalent split influenza A (H7N9) MF59-adjuvanted vaccine that was immunogenic in mice. Our H7N9 vaccine is selected for clinical investigation and potential human use. To assess the safety of our H7N9 vaccine, we performed acute toxicity, repeated dose toxicity and active systemic anaphylaxis tests. Our results showed that, under the conditions used in this study, the NOEAL (no obvious adverse effect level) was 30 μg/0.5 mL.
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Affiliation(s)
- Huilin Ou
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Wei Yao
- Department of Pre-clinical Research and Development, Zhejiang Tianyuan Bio-Pharmaceutical Co., Ltd., Hangzhou, China
| | - Nanping Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Frederick X C Wang
- Department of Bioengineering, Erik Jonsson School of Engineering and Computer Science, The University of Texas at Dallas, Texas, USA
| | - Tianhao Weng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chengcong Han
- Department of Pre-clinical Research and Development, Zhejiang Tianyuan Bio-Pharmaceutical Co., Ltd., Hangzhou, China
| | - Xiangyun Lu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Dongshan Yu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Haibo Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Linfang Cheng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Honglin Chen
- State Key Laboratory for Emerging Infectious Diseases, Carol Yu Centre for Infection, The University of Hong Kong, Hong Kong, China
| | - Hangping Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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14
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Research progress in human infection with avian influenza H7N9 virus. SCIENCE CHINA-LIFE SCIENCES 2017; 60:1299-1306. [DOI: 10.1007/s11427-017-9221-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/06/2017] [Indexed: 12/26/2022]
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15
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Xiao J, Zhang L, Wang Z, Xiang W, Lu P, Zhao Y, Han M, Ma A, Qi P, Wang M, Gao GF, Liu WJ. Conserved peptides enhance immune efficiency of inactive vaccines against emerging avian influenza viruses in chicken. SCIENCE CHINA-LIFE SCIENCES 2017; 60:1340-1347. [DOI: 10.1007/s11427-017-9153-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 06/06/2017] [Indexed: 11/30/2022]
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16
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The S128N mutation combined with an additional potential N-linked glycosylation site at residue 133 in hemagglutinin affects the antigenicity of the human H7N9 virus. Emerg Microbes Infect 2016; 5:e66. [PMID: 27381217 PMCID: PMC4972904 DOI: 10.1038/emi.2016.66] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 03/17/2016] [Accepted: 04/05/2016] [Indexed: 11/09/2022]
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17
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Fang S, Wang X, Dong F, Jin T, Liu G, Lu X, Peng B, Wu W, Liu H, Kong D, Tang X, Qin Y, Mei S, Xie X, He J, Ma H, Zhang R, Cheng J. Genomic characterization of influenza A (H7N9) viruses isolated in Shenzhen, Southern China, during the second epidemic wave. Arch Virol 2016; 161:2117-32. [PMID: 27169600 DOI: 10.1007/s00705-016-2872-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 04/24/2016] [Indexed: 10/21/2022]
Abstract
There were three epidemic waves of human infection with avian influenza A (H7N9) virus in 2013-2014. While many analyses of the genomic origin, evolution, and molecular characteristics of the influenza A (H7N9) virus have been performed using sequences from the first epidemic wave, genomic characterization of the virus from the second epidemic wave has been comparatively less reported. In this study, an in-depth analysis was performed with respect to the genomic characteristics of 11 H7N9 virus strains isolated from confirmed cases and four H7N9 virus strains isolated from environmental samples in Shenzhen during the second epidemic wave. Phylogenetic analysis demonstrated that six internal segments of the influenza A (H7N9) virus isolated from confirmed cases and environmental samples in Shenzhen were clustered into two different clades and that the origin of the influenza A (H7N9) virus isolated from confirmed cases in Shenzhen was different from that of viruses isolated during the first wave. In addition, H9N2 viruses, which were prevalent in southern China, played an important role in the reassortment of the influenza A (H7N9) virus isolated in Shenzhen. HA-R47K and -T122A, PB2-V139I, PB1-I397M, and NS1-T216P were the signature amino acids of the influenza A (H7N9) virus isolated from confirmed cases in Shenzhen. We found that the HA, NA, M, and PA genes of the A(H7N9) viruses underwent positive selection in the human population. Therefore, enhanced surveillance should be carried out to determine the origin and mode of transmission of the novel influenza A (H7N9) virus and to facilitate the formulation of effective policies for prevention and containment of a human infection epidemics.
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Affiliation(s)
- Shisong Fang
- Major Infectious Disease Control Key Laboratory, Key Reference Laboratory of Pathogen and Biosafety, Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Xin Wang
- Major Infectious Disease Control Key Laboratory, Key Reference Laboratory of Pathogen and Biosafety, Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Fangyuan Dong
- College of Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou, China
| | - Tao Jin
- BGI-Shenzhen, Shenzhen, 518083, China
| | - Guang Liu
- BGI-Shenzhen, Shenzhen, 518083, China
| | - Xing Lu
- Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Bo Peng
- Major Infectious Disease Control Key Laboratory, Key Reference Laboratory of Pathogen and Biosafety, Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Weihua Wu
- Major Infectious Disease Control Key Laboratory, Key Reference Laboratory of Pathogen and Biosafety, Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Hui Liu
- Major Infectious Disease Control Key Laboratory, Key Reference Laboratory of Pathogen and Biosafety, Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Dongfeng Kong
- Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Xiujuan Tang
- Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Yanmin Qin
- Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Shujiang Mei
- Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Xu Xie
- Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Jianfan He
- Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Hanwu Ma
- Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China
| | - Renli Zhang
- Major Infectious Disease Control Key Laboratory, Key Reference Laboratory of Pathogen and Biosafety, Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China.
| | - Jinquan Cheng
- Shenzhen Center for Disease Control and Prevention, No. 8, Longyuan Road, Nanshan District, Shenzhen, Guangdong, China.
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