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Honda-Okubo Y, Bart Tarbet E, Hurst BL, Petrovsky N. An Advax-CpG adjuvanted recombinant H5 hemagglutinin vaccine protects mice against lethal influenza infection. Vaccine 2023; 41:5730-5741. [PMID: 37567799 DOI: 10.1016/j.vaccine.2023.08.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/11/2023] [Accepted: 08/03/2023] [Indexed: 08/13/2023]
Abstract
There is a major unmet need for strategies to improve the immunogenicity of vaccines to protect against highly pathogenic avian influenza strains with pandemic potential. This study tested the ability of adjuvants based on delta inulin (Advax™) alone or combined with a TLR9 agonist (Advax-CpG™) to enhance the immunogenicity of recombinant H5 hemagglutinin antigen expressed in insect cells (rH5HA) to protect mice against lethal influenza infection. The Advax-adjuvanted rH5HA induced high serum hemagglutination inhibition activity, as well as Th1 and Th2 cytokine secreting CD4 and CD8 T cells. Immunization protected mice against a lethal heterosubtypic H5N1 virus challenge. Mice immunized with an Advax-adjuvanted rHA2 stem antigen prepared by enzymatic cleavage of rH5HA produced serum antibodies devoid of hemagglutination inhibition activity, but these anti-HA2 antibodies were nevertheless able to transfer protection against lethal H1N1 or H3N2 infections to naïve mice. We hypothesize that the enhanced protection afforded by Advax-adjuvanted rH5HA may be mediated by the combination of neutralizing antibodies directed at the HA head, anti-HA2 stem antibodies plus memory CD4 + and CD8 + T cells. This outcome supports further development of the Advax-adjuvanted rH5 pandemic influenza vaccine platform.
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Affiliation(s)
- Yoshikazu Honda-Okubo
- Vaxine Pty Ltd, Warradale, Adelaide, SA 5046, Australia; Flinders University, Bedford Park, Adelaide, SA 5042, Australia
| | - E Bart Tarbet
- Institute for Antiviral Research, Department of Animal, Dairy, and Veterinary Sciences, 5600 Old Main Hill, Utah State University, Logan, UT 84322, USA
| | - Brett L Hurst
- Institute for Antiviral Research, Department of Animal, Dairy, and Veterinary Sciences, 5600 Old Main Hill, Utah State University, Logan, UT 84322, USA
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2
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Jiang L, Li J, Cui H, Zhang C, Jin Y, Fu Y, Ma N, Tang F, Zhang Y, Zheng J, Li L, Lu B, Chen Z, Guo Z, Wang Z. Etiologic characteristics of avian influenza H11 viruses isolated from the live poultry market in southeast coastal region in China. Front Microbiol 2022; 13:1002670. [PMID: 36338057 PMCID: PMC9634483 DOI: 10.3389/fmicb.2022.1002670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 08/24/2022] [Indexed: 11/27/2022] Open
Abstract
Since it was first identified in 1956, the H11 subvariant influenza virus has been reported worldwide. However, due to the low pathogenicity of the H11 subvariant and the absence of its widespread transmission among humans, there are only a few reports on the etiology of the H11 subvariant influenza virus. Therefore, in the present study, we isolated a strain of the H11N3 avian influenza virus (AIV) from poultry feces from the live poultry market in the southeast coastal region of China. Considering that the H11 subvariant is known to cause infections in humans and to enrich the knowledge of the H11 subvariant of the avian influenza virus, the genetics, pathogenicity, and transmissibility of the isolate were studied. The phylogenetic analysis indicated that the H11N3 isolate was of Eurasian origin and carried genes closely related to duck H7N2 and H4N6. The receptor binding analysis revealed that the H11N3 isolate only acquired a binding affinity for avian-derived receptors. In the respiratory system of mice, the isolate could directly cause infection without adaptation. In addition, the results from transmission experiments and antibody detection in guinea pigs demonstrated that H11N3 influenza viruses can efficiently transmit through the respiratory tract in mammalian models. Direct infection of the H11N3 influenza virus without adaptation in the mouse models and aerosol transmission between guinea pig models confirms its pandemic potential in mammals, underscoring the importance of monitoring rare influenza virus subtypes in future studies.
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Affiliation(s)
- Lina Jiang
- Xiamen Center for Disease Control and Prevention, Xiamen, China
| | - Jiaming Li
- Beijing Institute of Biotechnology, Beijing, China
| | - Huan Cui
- Changchun Veterinary Research Institute, Chinese Academy of Agriculture Sciences, Changchun, China
| | - Cheng Zhang
- Changchun Veterinary Research Institute, Chinese Academy of Agriculture Sciences, Changchun, China
| | - Yifei Jin
- Beijing Institute of Biotechnology, Beijing, China
| | - Yingying Fu
- Beijing Institute of Biotechnology, Beijing, China
| | - Ningning Ma
- Beijing Institute of Health Care, Beijing, China
| | - Fei Tang
- Xiamen Center for Disease Control and Prevention, Xiamen, China
| | - Yidun Zhang
- Xiamen Center for Disease Control and Prevention, Xiamen, China
| | - Jing Zheng
- Xiamen Center for Disease Control and Prevention, Xiamen, China
| | - Li Li
- Xiamen Center for Disease Control and Prevention, Xiamen, China
| | - Bing Lu
- Beijing Institute of Biotechnology, Beijing, China
| | - Zehui Chen
- Xiamen Center for Disease Control and Prevention, Xiamen, China
- Zehui Chen
| | - Zhendong Guo
- Changchun Veterinary Research Institute, Chinese Academy of Agriculture Sciences, Changchun, China
- Zhendong Guo
| | - Zhongyi Wang
- Beijing Institute of Biotechnology, Beijing, China
- *Correspondence: Zhongyi Wang
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3
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Zhang C, Meng X, Zhao H. Comparison of Cell Fusions Induced by Influenza Virus and SARS-CoV-2. Int J Mol Sci 2022; 23:ijms23137365. [PMID: 35806369 PMCID: PMC9266613 DOI: 10.3390/ijms23137365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 06/28/2022] [Accepted: 06/28/2022] [Indexed: 12/10/2022] Open
Abstract
Virus–cell fusion is the key step for viral infection in host cells. Studies on virus binding and fusion with host cells are important for understanding the virus–host interaction and viral pathogenesis for the discovery of antiviral drugs. In this review, we focus on the virus–cell fusions induced by the two major pandemic viruses, including the influenza virus and SARS-CoV-2. We further compare the cell fusions induced by the influenza virus and SARS-CoV-2, especially the pH-dependent fusion of the influenza virus and the fusion of SARS-CoV-2 in the type-II transmembrane serine protease 2 negative (TMPRSS2-) cells with syncytia formation. Finally, we present the development of drugs used against SARA-CoV-2 and the influenza virus through the discovery of anti-fusion drugs and the prevention of pandemic respiratory viruses.
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Affiliation(s)
- Chuyuan Zhang
- Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (C.Z.); (X.M.)
| | - Xinjie Meng
- Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (C.Z.); (X.M.)
- Centre for Virology, Vaccinology and Therapeutics, Hong Kong Science and Technology Park, Hong Kong, China
| | - Hanjun Zhao
- Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China; (C.Z.); (X.M.)
- Centre for Virology, Vaccinology and Therapeutics, Hong Kong Science and Technology Park, Hong Kong, China
- State Key Laboratory of Emerging Infectious Diseases, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- Correspondence: or ; Tel.: +852-2255-4892
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Wang G, Liu D, Hu J, Gu M, Wang X, He D, Zhang L, Li J, Zheng X, Zeng Z, Liu H, Hu S, Peng D, Jiao X, Liu X. Mutations during the adaptation of H7N9 avian influenza virus to mice lungs enhance human-like sialic acid binding activity and virulence in mice. Vet Microbiol 2021; 254:109000. [PMID: 33515926 DOI: 10.1016/j.vetmic.2021.109000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 01/18/2021] [Indexed: 01/18/2023]
Abstract
The first avian H7N9 influenza outbreak in spring of 2013 emerged in an unprecedented transmission from infected poultry to humans in the Yangtze delta area, eastern China, posing a dual challenge to public health and poultry industry. However, the mechanism for how avian H7N9 influenza virus adapts to mammalian hosts has not been clearly understood. Here, to identify adaptive changes that confer enhanced virulence of H7N9 virus in mammals, we generated a mouse-adapted H7N9 variant virus (S8) by serial lung-to-lung passages of the wild-type SDL124 virus in mice and compared their phenotype in vivo and in vitro. Sequence analysis showed that the two viruses differed by 27 amino acids distributed among six genes, containing changes in PB2 (E627K, D701N) and HA (Q226L) genes. The 50% mouse lethal dose (MLD50) of S8 reduced about 500 folds, to be moderately pathogenic to mice when compared to that of low pathogenic wild-type SDL124. Moreover, S8 replicated efficiently in mouse lungs and displayed expanded tissue tropism, and induced a greater degree of pulmonary edema and higher level of inflammatory cell infiltration in bronchoalveolar lavage fluids than SDL124 did. Interestingly, the mouse adapted S8 virus obtained strong affinity for human-like (SAα-2,6 Gal) receptor during the adaptation in mice. Correspondingly, compared with SDL124 virus, S8 virus showed higher replication efficiency in mammalian cells, whereas lower replication ability in avian cells. Taken together, these findings suggest that these mutations synergistically elevate the ability of H7N9 virus to disseminate to multiple organs and subsequently enhance the virulence of H7N9 virus in mammalian hosts.
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Affiliation(s)
- Guoqing Wang
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Dong Liu
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Jiao Hu
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Min Gu
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Xiaoquan Wang
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Dongchang He
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Lei Zhang
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Jun Li
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Xinxin Zheng
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Zixiong Zeng
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Huimou Liu
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Shunlin Hu
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Daxin Peng
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Xinan Jiao
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis, Yangzhou University, Yangzhou, Jiangsu, China; Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China
| | - Xiufan Liu
- Animal Infectious Disease Laboratory, School 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, Jiangsu, China; Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agri-food Safety and Quality, Ministry of Agriculture of China(26116120), Yangzhou University, Yangzhou, China.
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Borland S, Gracieux P, Jones M, Mallet F, Yugueros-Marcos J. Influenza A Virus Infection in Cats and Dogs: A Literature Review in the Light of the "One Health" Concept. Front Public Health 2020; 8:83. [PMID: 32266198 PMCID: PMC7098917 DOI: 10.3389/fpubh.2020.00083] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 03/02/2020] [Indexed: 12/27/2022] Open
Abstract
Influenza A viruses are amongst the most challenging viruses that threaten both human and animal health. Constantly evolving and crossing species barrier, the emergence of novel zoonotic pathogens is one of the greatest challenges to global health security. During the last decade, considerable attention has been paid to influenza virus infections in dogs, as two canine H3N8 and H3N2 subtypes caused several outbreaks through the United States and Southern Asia, becoming endemic. Cats, even though less documented in the literature, still appear to be susceptible to many avian influenza infections. While influenza epidemics pose a threat to canine and feline health, the risks to humans are largely unknown. Here, we review most recent knowledge of the epidemiology of influenza A viruses in dogs and cats, existing evidences for the abilities of these species to host, sustain intraspecific transmission, and generate novel flu A lineages through genomic reassortment. Such enhanced understanding suggests a need to reinforce surveillance of the role played by companion animals-human interface, in light of the “One Health” concept and the potential emergence of novel zoonotic viruses.
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Affiliation(s)
- Stéphanie Borland
- bioMérieux S.A./BioFire Diagnostics LLC Research and Development, Centre Christophe Mérieux, Grenoble, France
| | - Patrice Gracieux
- bioMérieux S.A./BioFire Diagnostics LLC Research and Development, Centre Christophe Mérieux, Grenoble, France
| | - Matthew Jones
- BioFire Diagnostics LLC, Salt Lake City, UT, United States
| | - François Mallet
- Joint Research Unit, Hospice Civils de Lyon, bioMérieux S.A., Centre Hospitalier Lyon Sud, Pierre-Benite, France
| | - Javier Yugueros-Marcos
- bioMérieux S.A./BioFire Diagnostics LLC Research and Development, Centre Christophe Mérieux, Grenoble, France
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Experimental pathology of two highly pathogenic H5N1 viruses isolated from crows in BALB/c mice. Microb Pathog 2020; 141:103984. [PMID: 31972269 DOI: 10.1016/j.micpath.2020.103984] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 12/28/2019] [Accepted: 01/15/2020] [Indexed: 12/27/2022]
Abstract
In this study, we assessed the pathogenicity of two H5N1 viruses isolated from crows in mice. Eighteen 6-8 weeks BALB/c mice each were intranasally inoculated with 106 EID50/ml of H5N1 viruses A/crow/India/03CA04/2015 (H9N2-PB2 reassortant H5N1) and A/crow/India/02CA01/2012 (Non-reassortant H5N1). The infected mice showed dullness, weight loss and ruffled fur coat. Histopathological examination of lungs showed severe congestion, haemorrhage, thrombus, fibrinous exudate in perivascular area, interstitial septal thickening, bronchiolitis and alveolitis leading to severe pneumonic changes and these lesions were less pronounced in reassortant virus infected mice. Viral replication was demonstrated in nasal mucosa, lungs, trachea and brain in both the groups. Brain, lung, nasal mucosa and trachea showed significantly higher viral RNA copies and presence of antigen in immunohistochemistry in both the groups. This study concludes that both the crow viruses caused morbidity and mortality in mice and the viruses were phenotypically highly virulent in mice. The H5N1 viruses isolated from synanthropes pose a serious public health concern and should be monitored continuously for their human spill-over.
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Qin J, Peng O, Shen X, Gong L, Xue C, Cao Y. Multiple amino acid substitutions involved in the adaption of three avian-origin H7N9 influenza viruses in mice. Virol J 2019; 16:3. [PMID: 30621708 PMCID: PMC6323857 DOI: 10.1186/s12985-018-1109-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 12/17/2018] [Indexed: 12/16/2022] Open
Abstract
Background Avian influenza A H7N9 virus has caused five outbreak waves of human infections in China since 2013 and posed a dual challenge to public health and poultry industry. The number of reported H7N9 virus human cases confirmed by laboratory has surpassed that of H5N1 virus. However, the mechanism for how H7N9 influenza virus overcomes host range barrier has not been clearly understood. Methods To generate mouse-adapted H7N9 influenza viruses, we passaged three avian-origin H7N9 viruses in mice by lung-to-lung passages independently. Then, the characteristics between the parental and mouse-adapted H7N9 viruses was compared in the following aspects, including virulence in mice, tropism of different tissues, replication in MDCK cells and molecular mutations. Results After ten passages in mice, MLD50 of the H7N9 viruses reduced >750-3,160,000 folds, and virus titers in MDCK cells increased 10-200 folds at 48 hours post-inoculation. Moreover, the mouse-adapted H7N9 viruses showed more expanded tissue tropism and more serious lung pathological lesions in mice. Further analysis of the amino acids changes revealed 10 amino acid substitutions located in PB2 (E627K), PB1 (W215R and D638G), PA (T97I), HA (H3 numbering: R220G, L226S, G279R and G493R) and NA (P3Q and R134I) proteins. Moreover, PB2 E627K substitution was shared by the three mouse-adapted viruses (two viruses belong to YRD lineage and one virus belongs to PRD lineage), and PA T97A substitution was shared by two mouse-adapted viruses (belong to YRD lineage). Conclusions Our result indicated that the virulence in mice and virus titer in MDCK cells of H7N9 viruses significantly increased after adapted in mouse model. PB2 E627K and PA T97A substitutions are vital in mouse adaption and should be monitored during epidemiological study of H7N9 virus. Electronic supplementary material The online version of this article (10.1186/s12985-018-1109-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jianru Qin
- State Key Laboratory of Biocontrol, School of Life Sciences, Higher Education Mega Center, Sun Yat-sen University, Guangzhou, 510006, China
| | - Ouyang Peng
- State Key Laboratory of Biocontrol, School of Life Sciences, Higher Education Mega Center, Sun Yat-sen University, Guangzhou, 510006, China
| | - Xiaoting Shen
- State Key Laboratory of Biocontrol, School of Life Sciences, Higher Education Mega Center, Sun Yat-sen University, Guangzhou, 510006, China
| | - Lang Gong
- State Key Laboratory of Biocontrol, School of Life Sciences, Higher Education Mega Center, Sun Yat-sen University, Guangzhou, 510006, China
| | - Chunyi Xue
- State Key Laboratory of Biocontrol, School of Life Sciences, Higher Education Mega Center, Sun Yat-sen University, Guangzhou, 510006, China.
| | - Yongchang Cao
- State Key Laboratory of Biocontrol, School of Life Sciences, Higher Education Mega Center, Sun Yat-sen University, Guangzhou, 510006, China.
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Three amino acid substitutions in the NS1 protein change the virus replication of H5N1 influenza virus in human cells. Virology 2018; 519:64-73. [PMID: 29677653 DOI: 10.1016/j.virol.2018.04.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 04/05/2018] [Accepted: 04/10/2018] [Indexed: 12/15/2022]
Abstract
Influenza A viruses have sophisticated strategies to promote their own replication. Here, we found that three H5N1 influenza viruses display different replication patterns in human A549 and macrophage cells. The HN01 virus displayed poor replication compared to HN021 and JS01. In addition, the HN01 virus was unable to counteract the interferon response and block general gene expression. This capability was restored by three amino acid substitutions on the NS1 protein: K55E, K66E, and C133F, resulting in recovered binding to CPSF30 and decreased interferon response activity. Furthermore, a recombinant HN01 virus expressing either NS1-C133F or the triple mutation replicate with higher titers in human A549 cells and macrophages compared to the parent virus. These three amino acid mutations reveal a new pathway to alter H5N1 virus replication.
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9
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Ding Y, Chen L, Wu W, Yang J, Yang Z, Liu S. Andrographolide inhibits influenza A virus-induced inflammation in a murine model through NF-κB and JAK-STAT signaling pathway. Microbes Infect 2017; 19:605-615. [PMID: 28889969 DOI: 10.1016/j.micinf.2017.08.009] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 08/22/2017] [Accepted: 08/25/2017] [Indexed: 12/22/2022]
Abstract
Influenza viruses, the main cause of respiratory tract diseases, cause high morbidity and mortality in humans. Excessive inflammation in the lungs is proposed to be a hallmark for the severe influenza virus infection, especially influenza A virus infection. Strategies against inflammation induced by influenza A virus infection could be a potential anti-influenza therapy. Here, lethal dose of mouse-adapted H1N1 strain PR8A/PR/8/34 was inoculated C57BL/6 mice to detect the anti-influenza activity of andrographolide, the active component of traditional Chinese medicinal herb Andrographis paniculata, with or without influenza virus entry inhibitor CL-385319. Treatment was initiated on 4 days after infection. The survival rate, body weight, lung pathology, viral loads, cytokine expression were monitored in 14 days post inoculation. The combination group had the highest survival rate. Andrographolide treatment could increase the survival rate, diminish lung pathology, decrease the virus loads and the inflammatory cytokines expression induced by infection. Mechanism studies showed the NF-κB and JAK-STAT signaling pathway were involved in the activity of andrographolide. In conclusion, combination of virus entry inhibitor with immunomodulator might be a promising therapeutic approach for influenza.
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Affiliation(s)
- Yi Ding
- Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Lizhu Chen
- Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Wenjiao Wu
- Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Jie Yang
- Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Zifeng Yang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Disease, National Clinical Centre of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Shuwen Liu
- Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China; State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou, China.
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10
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He B, Zheng BJ, Wang Q, Du L, Jiang S, Lu L. Adenovirus-based vaccines against avian-origin H5N1 influenza viruses. Microbes Infect 2015; 17:135-41. [PMID: 25479556 PMCID: PMC7110517 DOI: 10.1016/j.micinf.2014.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 11/18/2014] [Accepted: 11/18/2014] [Indexed: 02/03/2023]
Abstract
Since 1997, human infection with avian H5N1, having about 60% mortality, has posed a threat to public health. In this review, we describe the epidemiology of H5N1 transmission, advantages and disadvantages of different influenza vaccine types, and characteristics of adenovirus, finally summarizing advances in adenovirus-based H5N1 systemic and mucosal vaccines.
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Affiliation(s)
- Biao He
- Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, Shanghai Medical College and Institute of Medical Microbiology, Fudan University, Shanghai 200032, China
| | - Bo-jian Zheng
- Department of Microbiology, University of Hong Kong, Pokfulam, Hong Kong 999077, China
| | - Qian Wang
- Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, Shanghai Medical College and Institute of Medical Microbiology, Fudan University, Shanghai 200032, China
| | - Lanying Du
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA
| | - Shibo Jiang
- Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, Shanghai Medical College and Institute of Medical Microbiology, Fudan University, Shanghai 200032, China; Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY 10065, USA.
| | - Lu Lu
- Key Laboratory of Medical Molecular Virology of Ministries of Education and Health, Shanghai Medical College and Institute of Medical Microbiology, Fudan University, Shanghai 200032, China.
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11
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Schultz-Cherry S, Webby RJ, Webster RG, Kelso A, Barr IG, McCauley JW, Daniels RS, Wang D, Shu Y, Nobusawa E, Itamura S, Tashiro M, Harada Y, Watanabe S, Odagiri T, Ye Z, Grohmann G, Harvey R, Engelhardt O, Smith D, Hamilton K, Claes F, Dauphin G. Influenza gain-of-function experiments: their role in vaccine virus recommendation and pandemic preparedness. mBio 2014; 5:e02430-14. [PMID: 25505124 PMCID: PMC4278542 DOI: 10.1128/mbio.02430-14] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In recent years, controversy has arisen regarding the risks and benefits of certain types of gain-of-function (GOF) studies involving avian influenza viruses. In this article, we provide specific examples of how different types of data, including information garnered from GOF studies, have helped to shape the influenza vaccine production process-from selection of candidate vaccine viruses (CVVs) to the manufacture and stockpiling of safe, high-yield prepandemic vaccines for the global community. The article is not written to support a specific pro- or anti-GOF stance but rather to inform the scientific community about factors involved in vaccine virus selection and the preparation of prepandemic influenza vaccines and the impact that some GOF information has had on this process.
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Affiliation(s)
- S Schultz-Cherry
- WHO Collaborating Center for Studies on the Ecology of Influenza in Animals, Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - R J Webby
- WHO Collaborating Center for Studies on the Ecology of Influenza in Animals, Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - R G Webster
- WHO Collaborating Center for Studies on the Ecology of Influenza in Animals, Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - A Kelso
- WHO Collaborating Centre for Reference and Research on Influenza, Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - I G Barr
- WHO Collaborating Centre for Reference and Research on Influenza, Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - J W McCauley
- WHO Collaborating Centre for Reference and Research on Influenza, Division of Virology, MRC National Institute for Medical Research, Mill Hill, London, United Kingdom
| | - R S Daniels
- WHO Collaborating Centre for Reference and Research on Influenza, Division of Virology, MRC National Institute for Medical Research, Mill Hill, London, United Kingdom
| | - D Wang
- WHO Collaborating Center for Reference and Research on Influenza, Chinese National Influenza Center, National Institute for Viral Disease Control and Prevention China CDC, Beijing, People's Republic of China
| | - Y Shu
- WHO Collaborating Center for Reference and Research on Influenza, Chinese National Influenza Center, National Institute for Viral Disease Control and Prevention China CDC, Beijing, People's Republic of China
| | - E Nobusawa
- WHO Collaborating Centre for Reference and Research on Influenza, National Institute of Infectious Diseases, Laboratory of Influenza Virus Surveillance, Influenza Virus Research Center, Tokyo, Japan
| | - S Itamura
- WHO Collaborating Centre for Reference and Research on Influenza, National Institute of Infectious Diseases, Laboratory of Influenza Virus Surveillance, Influenza Virus Research Center, Tokyo, Japan
| | - M Tashiro
- WHO Collaborating Centre for Reference and Research on Influenza, National Institute of Infectious Diseases, Laboratory of Influenza Virus Surveillance, Influenza Virus Research Center, Tokyo, Japan
| | - Y Harada
- WHO Collaborating Centre for Reference and Research on Influenza, National Institute of Infectious Diseases, Laboratory of Influenza Virus Surveillance, Influenza Virus Research Center, Tokyo, Japan
| | - S Watanabe
- WHO Collaborating Centre for Reference and Research on Influenza, National Institute of Infectious Diseases, Laboratory of Influenza Virus Surveillance, Influenza Virus Research Center, Tokyo, Japan
| | - T Odagiri
- WHO Collaborating Centre for Reference and Research on Influenza, National Institute of Infectious Diseases, Laboratory of Influenza Virus Surveillance, Influenza Virus Research Center, Tokyo, Japan
| | - Z Ye
- Division of Viral Products, Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Rockville, Maryland, USA
| | - G Grohmann
- Immunology and Vaccines, Therapeutic Goods Administration Laboratories, Woden, ACT, Australia
| | - R Harvey
- National Institute for Biological Standards and Control, Medicines and Healthcare Products Regulatory Agency, Potters Bar, United Kingdom
| | - O Engelhardt
- National Institute for Biological Standards and Control, Medicines and Healthcare Products Regulatory Agency, Potters Bar, United Kingdom
| | - D Smith
- Center for Pathogen Evolution, Department of Zoology, WHO CC for Modeling Evolution and Control of Emerging Infectious Diseases, University of Cambridge, Cambridge, United Kingdom
| | - K Hamilton
- OIE Scientific and Technical Department, OIE, Paris, France
| | - F Claes
- OFFLU/EMPRES Laboratory Unit, Animal Health Service, FAO, Rome, Italy
| | - G Dauphin
- OFFLU/EMPRES Laboratory Unit, Animal Health Service, FAO, Rome, Italy
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12
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Genetic tuning of avian influenza A (H7N9) virus promotes viral fitness within different species. Microbes Infect 2014; 17:118-22. [PMID: 25498867 DOI: 10.1016/j.micinf.2014.11.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 11/26/2014] [Accepted: 11/28/2014] [Indexed: 11/22/2022]
Abstract
Since their emergence in eastern China, novel influenza A (H7N9) viruses have been continuously circulating in poultry and causing human infections and death. We have proposed a "genetic tuning" mechanism for the genesis and evolution of the novel H7N9 virus during interspecies transmission.
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