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Luo S, Xie Z, Xie L, Liu J, Xie Z, Deng X, Huang L, Huang J, Zeng T, Khan MI. Reverse-transcription, loop-mediated isothermal amplification assay for the sensitive and rapid detection of H10 subtype avian influenza viruses. Virol J 2015; 12:145. [PMID: 26377809 PMCID: PMC4574065 DOI: 10.1186/s12985-015-0378-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 09/07/2015] [Indexed: 12/02/2022] Open
Abstract
Background The H10 subtype avian influenza viruses (H10N4, H10N5 and H10N7) have been reported to cause disease in mammals, and the first human case of H10N8 subtype avian influenza virus was reported in 2013. Recently, H10 subtype avian influenza viruses (AIVs) have been followed more closely, but routine diagnostic tests are tedious, less sensitive and time consuming, rapid molecular detection assays for H10 AIVs are not available. Methods Based on conserved sequences within the HA gene of the H10 subtype AIVs, specific primer sets of H10 subtype of AIVs were designed and assay reaction conditions were optimized. A reverse-transcription loop-mediated isothermal amplification (RT-LAMP) assay was established for the rapid detection of H10 subtype AIVs. The specificity was validated using multiple subtypes of AIVs and other avian respiratory pathogens, and the limit of detection (LOD) was tested using concentration gradient of in vitro-transcribed RNA. Results The established assay was performed in a water bath at 63 °C for 40 min, and the amplification result was visualized directly as well as under daylight reflections. The H10-RT-LAMP assay can specifically amplify H10 subtype AIVs and has no cross-reactivity with other subtypes AIVs or avian pathogens. The LOD of the H10-RT-LAMP assay was 10 copies per μL of in vitro-transcribed RNA. Conclusions The RT-LAMP method reported here is demonstrated to be a potentially valuable means for the detection of H10 subtype AIV and rapid clinical diagnosis, being fast, simple, and low in cost. Consequently, it will be a very useful screening assay for the surveillance of H10 subtype AIVs in underequipped laboratories as well as in field conditions.
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Affiliation(s)
- Sisi Luo
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, 530001, P.R. China.
| | - Zhixun Xie
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, 530001, P.R. China.
| | - Liji Xie
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, 530001, P.R. China.
| | - Jiabo Liu
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, 530001, P.R. China.
| | - Zhiqin Xie
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, 530001, P.R. China.
| | - Xianwen Deng
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, 530001, P.R. China.
| | - Li Huang
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, 530001, P.R. China.
| | - Jiaoling Huang
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, 530001, P.R. China.
| | - Tingting Zeng
- Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, Guangxi, 530001, P.R. China.
| | - Mazhar I Khan
- Department of Pathobiology and Veterinary Science, University of Connecticut, 61 North Eagleville Road Storrs, Connecticut, 06269-3089, USA.
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Wang F, Qi J, Bi Y, Zhang W, Wang M, Zhang B, Wang M, Liu J, Yan J, Shi Y, Gao GF. Adaptation of avian influenza A (H6N1) virus from avian to human receptor-binding preference. EMBO J 2015; 34:1661-73. [PMID: 25940072 DOI: 10.15252/embj.201590960] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 04/16/2015] [Indexed: 12/27/2022] Open
Abstract
The receptor-binding specificity of influenza A viruses is a major determinant for the host tropism of the virus, which enables interspecies transmission. In 2013, the first human case of infection with avian influenza A (H6N1) virus was reported in Taiwan. To gather evidence concerning the epidemic potential of H6 subtype viruses, we performed comprehensive analysis of receptor-binding properties of Taiwan-isolated H6 HAs from 1972 to 2013. We propose that the receptor-binding properties of Taiwan-isolated H6 HAs have undergone three major stages: initially avian receptor-binding preference, secondarily obtaining human receptor-binding capacity, and recently human receptor-binding preference, which has been confirmed by receptor-binding assessment of three representative virus isolates. Mutagenesis work revealed that E190V and G228S substitutions are important to acquire the human receptor-binding capacity, and the P186L substitution could reduce the binding to avian receptor. Further structural analysis revealed how the P186L substitution in the receptor-binding site of HA determines the receptor-binding preference change. We conclude that the human-infecting H6N1 evolved into a human receptor preference.
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Affiliation(s)
- Fei Wang
- College of Veterinary Medicine China Agricultural University, Beijing, China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of Microbiology Chinese Academy of Sciences, Beijing, China
| | - Jianxun Qi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of Microbiology Chinese Academy of Sciences, Beijing, China Center of Influenza Research and Early-Warning Chinese Academy of Sciences, Beijing, China
| | - Yuhai Bi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of Microbiology Chinese Academy of Sciences, Beijing, China Center of Influenza Research and Early-Warning Chinese Academy of Sciences, Beijing, China
| | - Wei Zhang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of Microbiology Chinese Academy of Sciences, Beijing, China Center of Influenza Research and Early-Warning Chinese Academy of Sciences, Beijing, China
| | - Min Wang
- College of Veterinary Medicine China Agricultural University, Beijing, China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of Microbiology Chinese Academy of Sciences, Beijing, China
| | - Baorong Zhang
- Research Network of Immunity and Health (RNIH), Beijing Institutes of Life Science Chinese Academy of Sciences, Beijing, China Aviation General Hospital, Beijing, China
| | - Ming Wang
- College of Veterinary Medicine China Agricultural University, Beijing, China
| | - Jinhua Liu
- College of Veterinary Medicine China Agricultural University, Beijing, China
| | - Jinghua Yan
- CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of Microbiology Chinese Academy of Sciences, Beijing, China Center of Influenza Research and Early-Warning Chinese Academy of Sciences, Beijing, China
| | - Yi Shi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of Microbiology Chinese Academy of Sciences, Beijing, China Center of Influenza Research and Early-Warning Chinese Academy of Sciences, Beijing, China Research Network of Immunity and Health (RNIH), Beijing Institutes of Life Science Chinese Academy of Sciences, Beijing, China
| | - George F Gao
- College of Veterinary Medicine China Agricultural University, Beijing, China CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of Microbiology Chinese Academy of Sciences, Beijing, China Center of Influenza Research and Early-Warning Chinese Academy of Sciences, Beijing, China Research Network of Immunity and Health (RNIH), Beijing Institutes of Life Science Chinese Academy of Sciences, Beijing, China National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention (China CDC), Beijing, China Office of Director-General, Chinese Center for Disease Control and Prevention (China CDC), Beijing, China
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Genetics, Receptor Binding, and Virulence in Mice of H10N8 Influenza Viruses Isolated from Ducks and Chickens in Live Poultry Markets in China. J Virol 2015; 89:6506-10. [PMID: 25855738 DOI: 10.1128/jvi.00017-15] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 03/30/2015] [Indexed: 12/11/2022] Open
Abstract
We analyzed eight H10N8 viruses isolated from ducks and chickens in live poultry markets from 2009 to 2013 in China. These viruses showed distinct genetic diversity and formed five genotypes: the four duck isolates formed four different genotypes, whereas the four chicken viruses belong to a single genotype. The viruses bound to both human- and avian-type receptors, and four of the viruses caused 12.7% to 22.5% body weight loss in mice.
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Ma C, Lam TTY, Chai Y, Wang J, Fan X, Hong W, Zhang Y, Li L, Liu Y, Smith DK, Webby RJ, Peiris JSM, Zhu H, Guan Y. Emergence and evolution of H10 subtype influenza viruses in poultry in China. J Virol 2015; 89:3534-41. [PMID: 25589662 PMCID: PMC4403437 DOI: 10.1128/jvi.03167-14] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/31/2014] [Indexed: 02/05/2023] Open
Abstract
UNLABELLED The cases of human infections with H10N8 viruses identified in late 2013 and early 2014 in Jiangxi, China, have raised concerns over the origin, prevalence, and development of these viruses in this region. Our long-term influenza surveillance of poultry and migratory birds in southern China in the past 12 years showed that H10 influenza viruses have been introduced from migratory to domestic ducks over several winter seasons at sentinel duck farms at Poyang Lake, where domestic ducks share their water body with overwintering migratory birds. H10 viruses were never detected in terrestrial poultry in our survey areas until August 2013, when they were identified at live-poultry markets in Jiangxi. Since then, we have isolated 124 H10N8 or H10N6 viruses from chickens at local markets, revealing an ongoing outbreak. Phylogenetic analysis of H10 and related viruses showed that the chicken H10N8 viruses were generated through multiple reassortments between H10 and N8 viruses from domestic ducks and the enzootic chicken H9N2 viruses. These chicken reassortant viruses were highly similar to the human isolate, indicating that market chickens were the source of human infection. Recently, the H10 viruses further reassorted, apparently with H5N6 viruses, and generated an H10N6 variant. The emergence and prevalence of H10 viruses in chickens and the occurrence of human infections provide direct evidence of the threat from the current influenza ecosystem in China. IMPORTANCE After the outbreak of avian-origin H7N9 influenza viruses in China, fatal human infections with a novel H10N8 virus were reported. Utilizing data from 12 years of influenza surveillance in southern China, we showed that H10 viruses were regularly introduced by migratory ducks to domestic ducks on Poyang Lake, a major aggregative site of migratory birds in Asia. The H10 viruses were maintained and amplified in domestic ducks and then transmitted to chickens and reassorted with enzootic H9N2 viruses, leading to an outbreak and human infections at live-poultry markets. The emergence of the H10N8 virus, following a pathway similar to that of the recent H7N9 virus, highlights the role of domestic ducks and the current influenza ecosystem in China that facilitates influenza viruses moving from their reservoir hosts through the live-poultry system to cause severe consequences for public health.
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Affiliation(s)
- Chi Ma
- Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College, Shantou, China Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China State Key Laboratory of Emerging Infectious Diseases (Shenzhen Branch), Shenzhen Third People's Hospital, Shenzhen, China
| | - Tommy Tsan-Yuk Lam
- Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China
| | - Yujuan Chai
- Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China
| | - Jia Wang
- Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College, Shantou, China Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China
| | - Xiaohui Fan
- Department of Microbiology, Guangxi Medical University, Nanning, China
| | - Wenshan Hong
- Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College, Shantou, China
| | - Yu Zhang
- Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College, Shantou, China Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China
| | - Lifeng Li
- Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College, Shantou, China Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China
| | - Yongmei Liu
- Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China
| | - David K Smith
- Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China
| | - Richard J Webby
- Division of Virology, Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Joseph S M Peiris
- Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China State Key Laboratory of Emerging Infectious Diseases (Shenzhen Branch), Shenzhen Third People's Hospital, Shenzhen, China
| | - Huachen Zhu
- Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College, Shantou, China Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China State Key Laboratory of Emerging Infectious Diseases (Shenzhen Branch), Shenzhen Third People's Hospital, Shenzhen, China
| | - Yi Guan
- Joint Influenza Research Centre (SUMC/HKU), Shantou University Medical College, Shantou, China Centre of Influenza Research, School of Public Health, The University of Hong Kong, Hong Kong SAR, China State Key Laboratory of Emerging Infectious Diseases (Shenzhen Branch), Shenzhen Third People's Hospital, Shenzhen, China
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Structure and receptor binding preferences of recombinant hemagglutinins from avian and human H6 and H10 influenza A virus subtypes. J Virol 2015; 89:4612-23. [PMID: 25673707 DOI: 10.1128/jvi.03456-14] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
UNLABELLED During 2013, three new avian influenza A virus subtypes, A(H7N9), A(H6N1), and A(H10N8), resulted in human infections. While the A(H7N9) virus resulted in a significant epidemic in China across 19 provinces and municipalities, both A(H6N1) and A(H10N8) viruses resulted in only a few human infections. This study focuses on the major surface glycoprotein hemagglutinins from both of these novel human viruses. The detailed structural and glycan microarray analyses presented here highlight the idea that both A(H6N1) and A(H10N8) virus hemagglutinins retain a strong avian receptor binding preference and thus currently pose a low risk for sustained human infections. IMPORTANCE Human infections with zoonotic influenza virus subtypes continue to be a great public health concern. We report detailed structural analysis and glycan microarray data for recombinant hemagglutinins from A(H6N1) and A(H10N8) viruses, isolated from human infections in 2013, and compare them with hemagglutinins of avian origin. This is the first structural report of an H6 hemagglutinin, and our results should further the understanding of these viruses and provide useful information to aid in the continuous surveillance of these zoonotic influenza viruses.
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Chan JFW, To KKW, Chen H, Yuen KY. Cross-species transmission and emergence of novel viruses from birds. Curr Opin Virol 2015; 10:63-9. [PMID: 25644327 PMCID: PMC7102742 DOI: 10.1016/j.coviro.2015.01.006] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 12/29/2014] [Accepted: 01/09/2015] [Indexed: 12/29/2022]
Abstract
The role of birds in cross-species transmission and emergence of novel viruses such as avian influenza A viruses are discussed. The novel avian viruses identified between 2012 and 2014 are summarized. The concept of ‘pathogen augmentation’ is introduced.
Birds, the only living member of the Dinosauria clade, are flying warm-blooded vertebrates displaying high species biodiversity, roosting and migratory behavior, and a unique adaptive immune system. Birds provide the natural reservoir for numerous viral species and therefore gene source for evolution, emergence and dissemination of novel viruses. The intrusions of human into natural habitats of wild birds, the domestication of wild birds as pets or racing birds, and the increasing poultry consumption by human have facilitated avian viruses to cross species barriers to cause zoonosis. Recently, a novel adenovirus was exclusively found in birds causing an outbreak of Chlamydophila psittaci infection among birds and humans. Instead of being the primary cause of an outbreak by jumping directly from bird to human, a novel avian virus can be an augmenter of another zoonotic agent causing the outbreak. A comprehensive avian virome will improve our understanding of birds’ evolutionary dynamics.
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Affiliation(s)
- Jasper Fuk-Woo Chan
- State Key Laboratory of Emerging Infectious Diseases, Department of Microbiology, and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Kelvin Kai-Wang To
- State Key Laboratory of Emerging Infectious Diseases, Department of Microbiology, and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Honglin Chen
- State Key Laboratory of Emerging Infectious Diseases, Department of Microbiology, and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Kwok-Yung Yuen
- State Key Laboratory of Emerging Infectious Diseases, Department of Microbiology, and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region.
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Liu M, Li X, Yuan H, Zhou J, Wu J, Bo H, Xia W, Xiong Y, Yang L, Gao R, Guo J, Huang W, Zhang Y, Zhao X, Zou X, Chen T, Wang D, Li Q, Wang S, Chen S, Hu M, Ni X, Gong T, Shi Y, Li J, Zhou J, Cai J, Xiao Z, Zhang W, Sun J, Li D, Wu G, Feng Z, Wang Y, Chen H, Shu Y. Genetic diversity of avian influenza A (H10N8) virus in live poultry markets and its association with human infections in China. Sci Rep 2015; 5:7632. [PMID: 25591167 PMCID: PMC5379002 DOI: 10.1038/srep07632] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 11/21/2014] [Indexed: 11/09/2022] Open
Abstract
Following the first human infection with the influenza A (H10N8) virus in Nanchang, China in December 2013, we identified two additional patients on January 19 and February 9, 2014. The epidemiologic, clinical, and virological data from the patients and the environmental specimen collected from 23 local live poultry markets (LPMs) were analyzed. The three H10N8 cases had a history of poultry exposure and presented with high fever (>38°C), rapidly progressive pneumonia and lymphopenia. Substantial high levels of cytokines and chemokines were observed. The sequences from an isolate (A/Environment/Jiangxi/03489/2013 [H10N8]) in an epidemiologically linked LPM showed highly identity with human H10N8 virus, evidencing LPM as the source of human infection. The HA and NA of human and environmental H10N8 isolates showed high identity (99.1–99.9%) while six genotypes with internal genes derived from H9N2, H7N3 and H7N9 subtype viruses were detected in environmental H10N8 isolates. The genotype of the virus causing human infection, Jiangxi/346, possessed a whole internal gene set of the A/Environment/Jiangxi/10618/2014(H9N2)-like virus. Thus, our findings support the notion that LPMs can act as both a gene pool for the generation of novel reassortants and a source for human infection, and intensive surveillance and management should therefore be conducted.
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Affiliation(s)
- Mingbin Liu
- Nanchang Center for Disease Control and Prevention, Nanchang, China, 330038
| | - Xiaodan Li
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Hui Yuan
- Jiangxi Provincial Disease Control and Prevention, Nanchang, China, 330029
| | - Jianfang Zhou
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Jingwen Wu
- Nanchang Center for Disease Control and Prevention, Nanchang, China, 330038
| | - Hong Bo
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Wen Xia
- Nanchang Center for Disease Control and Prevention, Nanchang, China, 330038
| | - Ying Xiong
- Jiangxi Provincial Disease Control and Prevention, Nanchang, China, 330029
| | - Lei Yang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Rongbao Gao
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Junfeng Guo
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Weijuan Huang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Ye Zhang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Xiang Zhao
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Xiaohui Zou
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Tao Chen
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Dayan Wang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Qun Li
- Chinese Center for Disease Control and Prevention, Beijing, China, 102206
| | - ShiWen Wang
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Shengen Chen
- Nanchang Center for Disease Control and Prevention, Nanchang, China, 330038
| | - Maohong Hu
- Nanchang Center for Disease Control and Prevention, Nanchang, China, 330038
| | - Xiansheng Ni
- Nanchang Center for Disease Control and Prevention, Nanchang, China, 330038
| | - Tian Gong
- Jiangxi Provincial Disease Control and Prevention, Nanchang, China, 330029
| | - Yong Shi
- Jiangxi Provincial Disease Control and Prevention, Nanchang, China, 330029
| | - Jianxiong Li
- Jiangxi Provincial Disease Control and Prevention, Nanchang, China, 330029
| | - Jun Zhou
- Jiangxi Provincial Disease Control and Prevention, Nanchang, China, 330029
| | - Jun Cai
- Donghu District Center for Disease Control and Prevention, Nanchang, China, 330008
| | - Zuke Xiao
- Jiangxi Provincial people's Hospital, Nanchang, China, 330006
| | - Wei Zhang
- The first affiliated hospital of Nanchang University, Nanchang, China, 330008
| | - Jian Sun
- The fourth affiliated hospital of Nanchang University, China, 330006
| | - Dexin Li
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Guizhen Wu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
| | - Zijian Feng
- Chinese Center for Disease Control and Prevention, Beijing, China, 102206
| | - Yu Wang
- Chinese Center for Disease Control and Prevention, Beijing, China, 102206
| | - Haiying Chen
- Nanchang Center for Disease Control and Prevention, Nanchang, China, 330038
| | - Yuelong Shu
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Key Laboratory for Medical Virology, National Health and Family Planning Commission, Beijing, China, 102206
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Wang M, Zhang W, Qi J, Wang F, Zhou J, Bi Y, Wu Y, Sun H, Liu J, Huang C, Li X, Yan J, Shu Y, Shi Y, Gao GF. Structural basis for preferential avian receptor binding by the human-infecting H10N8 avian influenza virus. Nat Commun 2015; 6:5600. [DOI: 10.1038/ncomms6600] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 10/20/2014] [Indexed: 01/26/2023] Open
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Li Q, Wang X, Gao Z, Sun Z, Cui Z, Duan Z, Li J, Gu M, Wang X, Hu J, Liu X, Liu X. Novel reassortant H5N5 viruses bind to a human-type receptor as a factor in pandemic risk. Vet Microbiol 2014; 175:356-61. [PMID: 25575877 DOI: 10.1016/j.vetmic.2014.11.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 11/14/2014] [Accepted: 11/17/2014] [Indexed: 12/09/2022]
Abstract
Highly pathogenic avian influenza A(HPAI) H5N1 viruses pose a serious pandemic threat due to their virulence and high mortality in humans, and their increasingly expanding host range and significant ongoing evolution could enhance their human-to-human transmissibility. Recently, various reassortant viruses were detected in different domestic poultry, with the HA gene derived from the A/goose/Guangdong/1/96-like (Gs/GD-like) lineage and the NA gene from influenza viruses of other subtypes. It is reported that some natural reassortant H5N5 highly pathogenic avian influenza viruses were isolated from poultry in China. And their HA genes were belonged to a new clade 2.3.4.4. We evaluated the receptor binding property and transmissibility in guinea pigs of these reassortant H5N5 HPAIVs. The results showed that these viruses bound to both avian-type (α-2,3) and human-type (α-2,6) receptors. In addition, we found that one of these viruses, 031, not only replicated but also transmitted efficiently in guinea pigs. Therefore, such reassortant influenza viruses may pose a pandemic threat.
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Affiliation(s)
- Qunhui Li
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Xuan Wang
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zhao Gao
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zhongtao Sun
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zhu Cui
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zhiqiang Duan
- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Juan Li
- 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
| | - 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 Zoonoses, Yangzhou, Jiangsu 225009, 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 Zoonoses, Yangzhou, Jiangsu 225009, 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 Zoonoses, Yangzhou, Jiangsu 225009, 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 Zoonoses, Yangzhou, Jiangsu 225009, China.
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Li Q, Wang X, Gu M, Zhu J, Hao X, Gao Z, Sun Z, Hu J, Hu S, Wang X, Liu X, Liu X. Novel H5 clade 2.3.4.6 viruses with both α-2,3 and α-2,6 receptor binding properties may pose a pandemic threat. Vet Res 2014; 45:127. [PMID: 25516306 PMCID: PMC4268885 DOI: 10.1186/s13567-014-0127-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 12/01/2014] [Indexed: 12/13/2022] Open
Abstract
The emerging H5 clade 2.3.4.6 viruses of different NA subtypes have been detected in different domestic poultry in China. We evaluated the receptor binding property and transmissibility of four novel H5 clade 2.3.4.6 subtype highly pathogenic avian influenza viruses. The results show that these viruses bound to both avian-type (α-2,3) and human-type (α-2,6) receptors. Furthermore, we found that one of these viruses, GS/EC/1112/11, not only replicated but also transmitted efficiently in guinea pigs. Therefore, such novel H5 subtype viruses have the potential of a pandemic threat.
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Affiliation(s)
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- Animal Infectious Disease Laboratory, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu, China.
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Abstract
Inappropriately named gain-of-function influenza research seeks to confer airborne transmission on avian influenza A viruses that otherwise cause only dead-end infections in humans. A recent study has succeeded in doing this with a highly pathogenic ostrich H7N1 virus in a ferret model without loss of virulence. If transposable to humans, this would constitute a novel virus with a case fatality rate ~30 greater than that of Spanish flu. A commentary from three distinguished virologists considered the benefits of this work to outweigh potential risks. I beg to disagree with conclusions in both papers, for the underlying science is not as strong as it appears.
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The pandemic potential of H10N8. Nat Rev Microbiol 2014. [DOI: 10.1038/nrmicro3301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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