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Chen X, Huang Y, Gao P, Wu F, Han Y, Zhang C, Hu Z, Zhao F, Shcherbakov DN, Pan W, Niu X, Li X, Liu S, Xu W. Engineering of novel hemagglutinin biosensors for rapid detection and drug screening of Influenza A H7N9 virus. Int J Biol Macromol 2024; 258:129126. [PMID: 38163504 DOI: 10.1016/j.ijbiomac.2023.129126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 12/27/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024]
Abstract
New pathogenic influenza virus strains are constantly emerging, posing a serious risk to both human health and economic growth. To effectively control the spread of this virus, there is an urgent need for early, rapid, sensitive, simple, and cost-effective detection technologies, as well as new and effective antiviral drugs. In this study, we have successfully achieved a significant milestone by successfully fusing the H7N9 influenza virus hemagglutinin (HA) protein with the nano-luciferase component, resulting in the development of a novel set of biosensors. This remarkable achievement marks the first instance of utilizing this biosensor technology for influenza antibody detection. Our biosensor technology also has the potential to facilitate the development of antiviral drugs targeting specific epitopes of the HA protein, providing a promising avenue for the treatment of H7N9 influenza virus infections. Furthermore, our biosensors have broad applications beyond H7N9 influenza virus detection, as they can be expanded for the detection of other pathogens and drug screening applications in the future. By providing a novel and effective solution to the detection and treatment of influenza viruses, our biosensors have the potential to revolutionize the field of infectious disease control.
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Affiliation(s)
- Xin Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yuan Huang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Peixuan Gao
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Fang Wu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yongyue Han
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Chuwen Zhang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Zhuowen Hu
- The Fifth Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong 510070, China
| | - Fang Zhao
- National Clinical Research Centre for Infectious Diseases, the Third People's Hospital of Shenzhen and the Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen 518112, Guangdong Province, China
| | - Dmitry N Shcherbakov
- State Research Center of Virology and Biotechnology VECTOR, Koltsovo 630559, Russia; Department of Physical-Chemistry Biology and Biotechnology, Altai State University, Barnaul 656049, Russia
| | - Weiqi Pan
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Xuefeng Niu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, China
| | - Xiaoyan Li
- The Fifth Affiliated Hospital, Southern Medical University, Guangzhou, Guangdong 510070, China.
| | - Shuwen Liu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Southern Medical University, Guangzhou 510515, China.
| | - Wei Xu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, China; Key Laboratory of Infectious Diseases Research in South China, Ministry of Education, Southern Medical University, Guangzhou, Guangdong 510515, China.
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Yi Z, Lu G, Chaojian S, Ping L, Renjun Z, Jida L, Yuhai B, Xiaoyan Z, Honglin Y, Quangang X, Yan L, Magalhães RJS, Youming W. Exploring the determinants of influenza A/H7N9 control intervention efficacy in China: disentangling the effect of the "1110" policy and poultry vaccination. Transbound Emerg Dis 2022; 69:e1982-e1991. [PMID: 35332680 DOI: 10.1111/tbed.14532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 02/23/2022] [Accepted: 03/21/2022] [Indexed: 12/01/2022]
Abstract
: The influenza A virus of the H7N9 subtype (FLUAV H7N9) emerged in Eastern China provinces in 2013 causing illness in both poultry and humans. Most reported FLUAV H7N9 human cases were related to those associated with the live poultry market chain. From 2013 to 2017, there were five epidemic waves of human infections, and from the end of 2016, the number of human cases increased sharply. To control FLUAV H7N9 in the market chain, the so-called "1110" policy at live poultry markets and a national vaccination programme were implemented. The relative efficacy of these two measures on the number of poultry and human infections has not been quantified and compared. To explore their efficacy, a cross-sectional study was conducted in six provinces of China, and the vaccination and surveillance data of H7N9 were analysed. Our survey data showed that poultry vendors were not widely aware of and did not accept the "1110" policy. For subjective and objective factors, some measures of the "1110" policy were not implemented in live bird markets (LBMs). However, the national vaccination programme achieved good immune effects and sharply decreased poultry FLUAV H7N9 infections. The detection rates of FLUAV H7N9 in LBMs and farms gradually decreased since the vaccination programme was implemented. Our analysis also indicated that human infections were closely related to poultry virus carriage rates; therefore, controlling FLUAV H7N9 circulation in poultry was an effective measure to control FLUAV H7N9 infections in humans. Although LBMs play a significant role in human infections, the management measures may not be implemented efficiently; hence, we need to conduct more investigations before developing related policies. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Zhang Yi
- College of public health, Zunyi Medical University, Guizhou Zunyi, China
| | - Gao Lu
- China Animal Health and Epidemiology Center (CAHEC), Shandong Qingdao, China
| | - Shen Chaojian
- China Animal Health and Epidemiology Center (CAHEC), Shandong Qingdao, China
| | - Liu Ping
- China Animal Health and Epidemiology Center (CAHEC), Shandong Qingdao, China
| | - Zhang Renjun
- Center for Animal Disease Control and Prevention of GuiZhou Province, Guizhou Guiyang, China
| | - Li Jida
- College of public health, Zunyi Medical University, Guizhou Zunyi, China
| | - Bi Yuhai
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Center for Influenza Research and Early-warning (CASCIRE), Beijing, China
| | - Zhou Xiaoyan
- China Animal Health and Epidemiology Center (CAHEC), Shandong Qingdao, China
| | - Yang Honglin
- China Animal Health and Epidemiology Center (CAHEC), Shandong Qingdao, China
| | - Xu Quangang
- China Animal Health and Epidemiology Center (CAHEC), Shandong Qingdao, China
| | - Li Yan
- College of public health, Zunyi Medical University, Guizhou Zunyi, China
| | - Ricardo J Soares Magalhães
- UQ Spatial Epidemiology Laboratory, School of Veterinary Science, The University of Queensland, Gatton Queensland, 4343, Australia.,Children Health and Environment Program, UQ Child Health Research Centre, The University of Queensland, South Brisbane, Queensland, 4101, Australia
| | - Wang Youming
- China Animal Health and Epidemiology Center (CAHEC), Shandong Qingdao, China
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Kiseleva I, Isakova-Sivak I, Stukova M, Erofeeva M, Donina S, Larionova N, Krutikova E, Bazhenova E, Stepanova E, Vasilyev K, Matyushenko V, Krylova M, Galatonova J, Ershov A, Lioznov D, Sparrow EG, Torelli G, Rudenko L. A Phase 1 Randomized Placebo-Controlled Study to Assess the Safety, Immunogenicity and Genetic Stability of a New Potential Pandemic H7N9 Live Attenuated Influenza Vaccine in Healthy Adults. Vaccines (Basel) 2020; 8:vaccines8020296. [PMID: 32532097 PMCID: PMC7350028 DOI: 10.3390/vaccines8020296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/30/2020] [Accepted: 06/09/2020] [Indexed: 01/06/2023] Open
Abstract
This study describes a double-blind randomized placebo-controlled phase I clinical trial in healthy adults of a new potential pandemic H7N9 live attenuated influenza vaccine (LAIV) based on the human influenza virus of Yangtze River Delta hemagglutinin lineage (ClinicalTrials.gov Identifier: NCT03739229). Two doses of H7N9 LAIV or placebo were administered intranasally to 30 and 10 subjects, respectively. The vaccine was well-tolerated and not associated with increased rates of adverse events or with any serious adverse events. Vaccine virus was detected in nasal swabs during the 6 days after vaccination or revaccination. A lower frequency of shedding was observed after the second vaccination. Twenty-five clinical viral isolates obtained after the first and second doses of vaccine retained the temperature-sensitive and cold-adapted phenotypic characteristics of LAIV. There was no confirmed transmission of the vaccine strain from vaccinees to placebo recipients. After the two H7N9 LAIV doses, an immune response was observed in 96.6% of subjects in at least one of the assays conducted.
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Affiliation(s)
- Irina Kiseleva
- Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”, 197376 St Petersburg, Russia; (I.I.-S.); (S.D.); (N.L.); (E.K.); (E.B.); (E.S.); (V.M.); (L.R.)
- Correspondence: ; Tel.: +7-(812)-2346-860
| | - Irina Isakova-Sivak
- Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”, 197376 St Petersburg, Russia; (I.I.-S.); (S.D.); (N.L.); (E.K.); (E.B.); (E.S.); (V.M.); (L.R.)
| | - Marina Stukova
- Smorodintsev Research Institute of Influenza, Ministry of Health of the Russian Federation, 197376 St Petersburg, Russia; (M.S.); (M.E.); (K.V.); (D.L.)
| | - Marianna Erofeeva
- Smorodintsev Research Institute of Influenza, Ministry of Health of the Russian Federation, 197376 St Petersburg, Russia; (M.S.); (M.E.); (K.V.); (D.L.)
| | - Svetlana Donina
- Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”, 197376 St Petersburg, Russia; (I.I.-S.); (S.D.); (N.L.); (E.K.); (E.B.); (E.S.); (V.M.); (L.R.)
| | - Natalie Larionova
- Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”, 197376 St Petersburg, Russia; (I.I.-S.); (S.D.); (N.L.); (E.K.); (E.B.); (E.S.); (V.M.); (L.R.)
| | - Elena Krutikova
- Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”, 197376 St Petersburg, Russia; (I.I.-S.); (S.D.); (N.L.); (E.K.); (E.B.); (E.S.); (V.M.); (L.R.)
| | - Ekaterina Bazhenova
- Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”, 197376 St Petersburg, Russia; (I.I.-S.); (S.D.); (N.L.); (E.K.); (E.B.); (E.S.); (V.M.); (L.R.)
| | - Ekaterina Stepanova
- Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”, 197376 St Petersburg, Russia; (I.I.-S.); (S.D.); (N.L.); (E.K.); (E.B.); (E.S.); (V.M.); (L.R.)
| | - Kirill Vasilyev
- Smorodintsev Research Institute of Influenza, Ministry of Health of the Russian Federation, 197376 St Petersburg, Russia; (M.S.); (M.E.); (K.V.); (D.L.)
| | - Victoria Matyushenko
- Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”, 197376 St Petersburg, Russia; (I.I.-S.); (S.D.); (N.L.); (E.K.); (E.B.); (E.S.); (V.M.); (L.R.)
| | - Marina Krylova
- The Federal State Unitary Enterprise “Scientific and Production Association for Immunological Preparations “Microgen”, Ministry of Health of Russian Federation, 127473 Moscow, Russia; (M.K.); (J.G.); (A.E.)
| | - Julia Galatonova
- The Federal State Unitary Enterprise “Scientific and Production Association for Immunological Preparations “Microgen”, Ministry of Health of Russian Federation, 127473 Moscow, Russia; (M.K.); (J.G.); (A.E.)
| | - Aleksey Ershov
- The Federal State Unitary Enterprise “Scientific and Production Association for Immunological Preparations “Microgen”, Ministry of Health of Russian Federation, 127473 Moscow, Russia; (M.K.); (J.G.); (A.E.)
| | - Dmitry Lioznov
- Smorodintsev Research Institute of Influenza, Ministry of Health of the Russian Federation, 197376 St Petersburg, Russia; (M.S.); (M.E.); (K.V.); (D.L.)
| | | | - Guido Torelli
- World Health Organization, 1211 Geneva, Switzerland; (E.G.S.); (G.T.)
| | - Larisa Rudenko
- Federal State Budgetary Scientific Institution “Institute of Experimental Medicine”, 197376 St Petersburg, Russia; (I.I.-S.); (S.D.); (N.L.); (E.K.); (E.B.); (E.S.); (V.M.); (L.R.)
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Yoshikura H. On the Case Fatality Rate: H7N9 Influenza Resurgence in China in 2017. Jpn J Infect Dis 2018; 71:315-317. [PMID: 29709980 DOI: 10.7883/yoken.jjid.2017.455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ren Z, Zhao Y, Liu J, Ji X, Meng L, Wang T, Sun W, Zhang K, Sang X, Yu Z, Li Y, Feng N, Wang H, Yang S, Yang Z, Ma Y, Gao Y, Xia X. Intramuscular and intranasal immunization with an H7N9 influenza virus-like particle vaccine protects mice against lethal influenza virus challenge. Int Immunopharmacol 2018; 58:109-116. [PMID: 29571081 DOI: 10.1016/j.intimp.2017.12.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 11/23/2017] [Accepted: 12/14/2017] [Indexed: 01/06/2023]
Abstract
The H7N9 influenza virus epidemic has been associated with a high mortality rate in China. Therefore, to prevent the H7N9 virus from causing further damage, developing a safe and effective vaccine is necessary. In this study, a vaccine candidate consisting of virus-like particles (VLPs) based on H7N9 A/Shanghai/2/2013 and containing hemagglutinin (HA), neuraminidase (NA), and matrix protein (M1) was successfully produced using a baculovirus (BV) expression system. Immunization experiments showed that strong humoral and cellular immune responses could be induced by the developed VLPs when administered via either the intramuscular (IM) or intranasal (IN) immunization routes. Notably, VLPs administered via both immunization routes provided 100% protection against lethal infection caused by the H7N9 virus. The IN immunization with 40μg of H7N9 VLPs induced strong lung IgA and lung tissue resident memory (TRM) cell-mediated local immune responses. These results provide evidence for the development of an effective preventive vaccine against the H7N9 virus based on VLPs administered through both the IM and IN immunization routes.
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Affiliation(s)
- Zhiguang Ren
- Joint National Laboratory for Antibody Drug Engineering, Henan University, School of Basic Medical Sciences, Kaifeng 475004, China; Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China; Key Lab of Cellular and Molecular Immunology, Henan University, School of Basic Medicine, Kaifeng 475004, China
| | - Yongkun Zhao
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Jing Liu
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Xianliang Ji
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Lingnan Meng
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Tiecheng Wang
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Weiyang Sun
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Kun Zhang
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Xiaoyu Sang
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Zhijun Yu
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Yuanguo Li
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Na Feng
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Hualei Wang
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Songtao Yang
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China
| | - Zhengyan Yang
- Joint National Laboratory for Antibody Drug Engineering, Henan University, School of Basic Medical Sciences, Kaifeng 475004, China; Key Lab of Cellular and Molecular Immunology, Henan University, School of Basic Medicine, Kaifeng 475004, China
| | - Yuanfang Ma
- Joint National Laboratory for Antibody Drug Engineering, Henan University, School of Basic Medical Sciences, Kaifeng 475004, China; Key Lab of Cellular and Molecular Immunology, Henan University, School of Basic Medicine, Kaifeng 475004, China
| | - Yuwei Gao
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225000, China; Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China.
| | - Xianzhu Xia
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130122, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225000, China; Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, China.
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Teng Y, Bi D, Guo X, Hu D, Feng D, Tong Y. Contact reductions from live poultry market closures limit the epidemic of human infections with H7N9 influenza. J Infect 2018; 76:295-304. [PMID: 29406153 DOI: 10.1016/j.jinf.2017.12.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 10/27/2017] [Accepted: 12/08/2017] [Indexed: 11/20/2022]
Abstract
An early steep increase in the number of humans infected with avian influenza A(H7N9) virus was observed in China, raising great public concern domestically and internationally. Little is known about the dynamics of the transmission contacts between poultry and human populations, although such understanding is essential for developing effective strategies to control this zoonosis. In this study, we evaluated the effects of contact reductions from live poultry markets (LPMs) closures on the transmission of H7N9 virus during epidemics in Guangdong Province, China. A mathematical model of the poultry-to-person transmission dynamics of H7N9 virus was constructed. The parameters in the model were estimated from publicly available data on confirmed cases of human infection and information on LPMs closure during 2013-2017. By fitting the model, we measured the time-dependent contact quantity of the susceptible population to LPMs. The results showed that periodic intervention strategies can greatly reduce the magnitude of outbreaks, and the earlier interventions for policy are implemented, the smaller is the outbreak. The control efforts for LPMs to decrease the contact quantity are critical in preventing epidemics in the long term. This model should provide important insights for the development of a national intervention strategy for the long-term control of avian influenza virus epidemics.
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Yu F, Song H, Wu Y, Chang SY, Wang L, Li W, Hong B, Xia S, Wang C, Khurana S, Feng Y, Wang Y, Sun Z, He B, Hou D, Manischewitz J, King LR, Song Y, Min JY, Golding H, Ji X, Lu L, Jiang S, Dimitrov DS, Ying T. A Potent Germline-like Human Monoclonal Antibody Targets a pH-Sensitive Epitope on H7N9 Influenza Hemagglutinin. Cell Host Microbe 2017; 22:471-483.e5. [PMID: 28966056 DOI: 10.1016/j.chom.2017.08.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/12/2017] [Accepted: 08/22/2017] [Indexed: 11/20/2022]
Abstract
The H7N9 influenza virus causes high-mortality disease in humans but no effective therapeutics are available. Here we report a human monoclonal antibody, m826, that binds to H7 hemagglutinin (HA) and protects against H7N9 infection. m826 binds to H7N9 HA with subnanomolar affinity at acidic pH and 10-fold lower affinity at neutral pH. The high-resolution (1.9 Å) crystal structure of m826 complexed with H7N9 HA indicates that m826 binds an epitope that may be fully exposed upon pH-induced conformational changes in HA. m826 fully protects mice against lethal challenge with H7N9 virus through mechanisms likely involving antibody-dependent cell-mediated cytotoxicity. Interestingly, immunogenetic analysis indicates that m826 is a germline antibody, and m826-like sequences can be identified in H7N9-infected patients, healthy adults, and newborn babies. These m826 properties offer a template for H7N9 vaccine immunogens, a promising candidate therapeutic, and a tool for exploring mechanisms of virus infection inhibition by antibodies.
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Wu UI, Hsieh SM, Lee WS, Wang NC, Kung HC, Ou TY, Chen FL, Lin TY, Chen YC, Chang SC. Safety and immunogenicity of an inactivated cell culture-derived H7N9 influenza vaccine in healthy adults: A phase I/II, prospective, randomized, open-label trial. Vaccine 2017; 35:4099-104. [PMID: 28668573 DOI: 10.1016/j.vaccine.2017.06.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/26/2017] [Accepted: 06/19/2017] [Indexed: 01/27/2023]
Abstract
BACKGROUND We conducted a phase I/II clinical trial to evaluate the safety and immunogenicity of a Madin-Darby canine kidney (MDCK) cell-grown inactivated H7N9 influenza vaccine for pandemic preparedness purposes. METHODS Between April 7, 2015 and May 27, 2016, healthy adults aged 20-60years were enrolled sequentially in phase I (n=40) and phase II (n=160) from three hospitals in Taiwan and randomized to receive 2 doses of whole-virus H7N9 vaccine (15 or 30μg hemagglutinin antigen (HA) with or without an aluminum hydroxide adjuvant) at 21-day intervals. Safety up to 180days and changes in hemagglutinin inhibition (HI) titers at 21days after each vaccination were determined. RESULTS Of the 200 randomized subjects, 193 (96.5%) received 2 doses of the study vaccine and were included in the intention-to-treat analysis for safety, and 190 (95%) were included in the per-protocol analysis for immunogenicity. Most adverse events were mild and transient; no death or vaccine-related serious adverse events were reported. Overall, higher immune responses were observed in the groups administered with 30μgHA formulation than in the other two groups administered with 15μgHA formulation. The highest immune response was observed in subjects who received 2 doses of the adjuvanted vaccine containing 30μgHA with HI titer, seroprotection rate, seroconversion rate, and seroconversion factor of 36.2, 64.6%, 64.6% and 5.7, respectively. CONCLUSIONS Our study demonstrated that the H7N9 influenza vaccine containing 30µgHA with aluminum hydroxide adjuvant was immunogenic and safe in adults aged 20-60years. CLINICALTRIALS.GOV identifier: NCT02436928.
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Wu Z, Sha J, Yu Z, Zhao N, Cheng W, Chan TC, Amer S, Zhang Z, Liu S. Epidemiological and virological differences in human clustered and sporadic infections with avian influenza A H7N9. Int J Infect Dis 2016; 49:9-17. [PMID: 27235087 DOI: 10.1016/j.ijid.2016.05.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 05/16/2016] [Accepted: 05/18/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Previous research has suggested that avian influenza A H7N9 has a greater potential pandemic risk than influenza A H5N1. This research investigated the difference in human clustered and sporadic cases of H7N9 virus and estimated the relative risk of clustered infections. METHODS Comparative epidemiology and virology studies were performed among 72 sporadic confirmed cases, 17 family clusters (FCs) caused by human-to-human transmission, and eight live bird market clusters (LCs) caused by co-exposure to the poultry environment. RESULTS The case fatality of FCs, LCs and sporadic cases (36%, 26%, and 29%, respectively) did not differ among the three groups (p>0.05). The average age (36 years, 60 years, and 58 years), co-morbidities (31%, 60%, and 54%), exposure to birds (72%, 100%, and 83%), and H7N9-positive rate (20%, 64%, and 35%) in FCs, LCs, and sporadic cases, respectively, differed significantly (p<0.05). These higher risks were associated with increased mortality. There was no difference between primary and secondary cases in LCs (p>0.05). However, exposure to a person with confirmed avian influenza A H7N9 (primary 12% vs. secondary 95%), history of visiting a live bird market (100% vs. 59%), multiple exposures (live bird exposure and human-to-human transmission history) (12% vs. 55%), and median days from onset to antiviral treatment (6 days vs. 3 days) differed significantly between primary and secondary cases in FCs (p<0.05). Mild cases were found in 6% of primary cases vs. 32% of secondary cases in FCs (p<0.05). Twenty-five isolates from the three groups showed 99.1-99.9% homology and increased human adaptation. CONCLUSIONS There was no statistical difference in the case fatality rate and limited transmission between FCs and LCs. However, the severity of the primary cases in FCs was much higher than that of the secondary cases due to the older age and greater underlying disease of the latter patients.
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Affiliation(s)
- Zuqun Wu
- Department of Respiratory Medicine, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jianping Sha
- Department of Endocrinology, The 421 Hospital of the Chinese People's Liberation Army, Guangzhou, China
| | - Zhao Yu
- Department of Infectious Diseases and Key Lab of Vaccine against Hemorrhagic Fever with Renal Syndrome, Zhejiang Provincial Centre for Disease Control and Prevention, Hangzhou, Zhejiang Province, China
| | - Na Zhao
- National Research Centre for Wildlife-Borne Diseases, Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Wei Cheng
- Department of Infectious Diseases and Key Lab of Vaccine against Hemorrhagic Fever with Renal Syndrome, Zhejiang Provincial Centre for Disease Control and Prevention, Hangzhou, Zhejiang Province, China
| | - Ta-Chien Chan
- Research Centre for Humanities and Social Sciences, Academia Sinica, Taipei, Taiwan
| | - Said Amer
- Department of Zoology, Faculty of Science, Kafr El Sheikh University, Kafr El Sheikh, Egypt
| | - Zhiruo Zhang
- School of Public Health, Shanghai Jiaotong University School of Medicine, 227 Chongqing South Road, Shanghai 200025, China.
| | - Shelan Liu
- Department of Infectious Diseases and Key Lab of Vaccine against Hemorrhagic Fever with Renal Syndrome, Zhejiang Provincial Centre for Disease Control and Prevention, Hangzhou, Zhejiang Province, China.
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Abstract
Severe acute respiratory syndrome (SARS) and human infection H7N9 influenza are emerging infectious diseases having a relatively high mortality. Epidemics of each began in China. By searching through Science Citation Index, this study analyzed the article literature on SARS and H7N9 influenza, particularly papers in the leading journals The Lancet, New England Journal of Medicine (NEJM), Nature and Science. The results show that the quantity and quality of SARS and H7N9 influenza literature from mainland China changed distinctly over the course of 10 years. Researchers from mainland China published 12 article literature in the The Lancet, NEJM, Nature and Science about H7N9 influenza, whereas mainland China had only 2 article literature about SARS in the same journals. The literature reflects China's growing strength in the science and technology of emerging infectious disease.
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Affiliation(s)
- Deqiao Tian
- Beijing Institute of Biotechnology, Beijing, 100071 People’s Republic of China
| | - Tao Zheng
- Beijing Institute of Biotechnology, Beijing, 100071 People’s Republic of China
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11
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Liu R, Moise L, Tassone R, Gutierrez AH, Terry FE, Sangare K, Ardito MT, Martin WD, De Groot AS. H7N9 T-cell epitopes that mimic human sequences are less immunogenic and may induce Treg-mediated tolerance. Hum Vaccin Immunother 2015; 11:2241-52. [PMID: 26090577 PMCID: PMC4635734 DOI: 10.1080/21645515.2015.1052197] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Avian-origin H7N9 influenza is a novel influenza A virus (IAV) that emerged in humans in China in 2013. Using immunoinformatics tools, we identified several H7N9 T cell epitopes with T cell receptor (TCR)-facing residues identical to those of multiple epitopes from human proteins. We hypothesized that host tolerance to these peptides may impair T helper response and contribute to the low titer, weak hemagglutination inhibiting (HI) antibody responses and diminished seroconversion rates that have been observed in human H7N9 infections and vaccine trials. We found that the magnitude of human T effector responses to individual H7N9 peptides was inversely correlated with the peptide's resemblance to self. Furthermore, a promiscuous T cell epitope from the hemagglutinin (HA) protein suppressed responses to other H7N9 peptides when co-administered in vitro. Along with other highly ‘human-like’ peptides from H7N9, this peptide was also shown to expand FoxP3+ regulatory T cells (Tregs). Thus, H7N9 may be camouflaged from effective human immune response by T cell epitope sequences that avert or regulate effector T cell responses through host tolerance.
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Affiliation(s)
- Rui Liu
- a Institute for Immunology and Informatics; University of Rhode Island ; Providence , RI USA
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12
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Spackman E, Pantin-Jackwood M, Swayne DE, Suarez DL, Kapczynski DR. Impact of route of exposure and challenge dose on the pathogenesis of H7N9 low pathogenicity avian influenza virus in chickens. Virology 2015; 477:72-81. [PMID: 25662310 DOI: 10.1016/j.virol.2015.01.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 01/06/2015] [Accepted: 01/14/2015] [Indexed: 12/01/2022]
Abstract
H7N9 influenza A first caused human infections in early 2013 in China. Virus genetics, histories of patient exposures to poultry, and previous experimental studies suggest the source of the virus is a domestic avian species, such as chickens. In order to better understand the ecology of this H7N9 in chickens, we evaluated the infectious dose and pathogenesis of A/Anhui/1/2013 H7N9 in two common breeds of chickens, White Leghorns (table-egg layers) and White Plymouth Rocks (meat chickens). No morbidity or mortality were observed with doses of 10(6) or 10(8)EID50/bird when administered by the upper-respiratory route, and the mean infectious dose (10(6) EID50) was higher than expected, suggesting that the virus is poorly adapted to chickens. Virus was shed at higher titers and spread to the kidneys in chickens inoculated by the intravenous route. Challenge experiments with three other human-origin H7N9 viruses showed a similar pattern of virus replication.
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Affiliation(s)
- Erica Spackman
- Southeast Poultry Research Laboratory, USDA-Agricultural Research Service, 934 College Station Rd., Athens, GA 30605, USA.
| | - Mary Pantin-Jackwood
- Southeast Poultry Research Laboratory, USDA-Agricultural Research Service, 934 College Station Rd., Athens, GA 30605, USA.
| | - David E Swayne
- Southeast Poultry Research Laboratory, USDA-Agricultural Research Service, 934 College Station Rd., Athens, GA 30605, USA.
| | - David L Suarez
- Southeast Poultry Research Laboratory, USDA-Agricultural Research Service, 934 College Station Rd., Athens, GA 30605, USA.
| | - Darrell R Kapczynski
- Southeast Poultry Research Laboratory, USDA-Agricultural Research Service, 934 College Station Rd., Athens, GA 30605, USA.
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13
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Chu DH, Sakoda Y, Nishi T, Hiono T, Shichinohe S, Okamatsu M, Kida H. Potency of an inactivated influenza vaccine prepared from A/duck/Mongolia/119/2008 (H7N9) against the challenge with A/Anhui/1/2013 (H7N9). Vaccine 2014; 32:3473-9. [PMID: 24793949 DOI: 10.1016/j.vaccine.2014.04.060] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 03/06/2014] [Accepted: 04/21/2014] [Indexed: 11/18/2022]
Abstract
H7N9 influenza virus infection in humans was reported in China on March 31, 2013. Humans are immunologically naïve to the H7N9 subtype, for which the seasonal influenza vaccine is not effective. Thus, the development of an H7N9 influenza virus vaccine is an urgent issue. To prepare for the emergence of an influenza pandemic, we have established a library comprising more than 1300 influenza virus strains with 144 different combinations of 16 HA and 9 NA subtypes. An H7N9 virus strain isolated from a 35-year-old woman, A/Anhui/1/2013 (H7N9), was found to be antigenically similar to H7N9 influenza viruses isolated from migratory ducks. In the present study, the potency of an inactivated whole virus particle vaccine prepared from an H7N9 low pathogenic avian influenza virus, A/duck/Mongolia/119/2008 (H7N9), selected from the library, was assessed by a challenge with A/Anhui/1/2013 (H7N9). The results indicate that the test vaccine was potent enough to induce sufficient immunity to reduce the impact of disease caused by the challenge with A/Anhui/1/2013 (H7N9) in mice. The present results indicate that an inactivated whole virus particle vaccine prepared from an influenza virus strain stored in the library could be useful as a vaccine strain in case of an influenza pandemic.
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Affiliation(s)
- Duc-Huy Chu
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Yoshihiro Sakoda
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Tatsuya Nishi
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Takahiro Hiono
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Shintaro Shichinohe
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Masatoshi Okamatsu
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan
| | - Hiroshi Kida
- Laboratory of Microbiology, Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido 060-0818, Japan; Research Center for Zoonosis Control, Hokkaido University, Sapporo 001-0020, Japan.
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