Recombinant Newcastle disease virus expressing H9 HA protects chickens against heterologous avian influenza H9N2 virus challenge
文献类型: 外文期刊
第一作者: Nagy, Abdou
作者: Nagy, Abdou;Lee, Jinhwa;Henningson, Jamie;Li, Yuhao;Ma, Jingjiao;Duff, Michael;Li, Yonghai;Lang, Yuekun;Yang, Jianmei;Richt, Juergen;Ma, Wenjun;Nagy, Abdou;Abdallah, Fatma;Ali, Ahmed;Mena, Ignacio;Garcia-Sastre, Adolfo;Mena, Ignacio;Garcia-Sastre, Adolfo;Yang, Jianmei;Garcia-Sastre, Adolfo
作者机构:
关键词: Influenza;Recombinant NDV LaSota viruses;H9N2;Cross-protection
期刊名称:VACCINE ( 影响因子:3.641; 五年影响因子:3.816 )
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收录情况: SCI
摘要: In order to produce an efficient poultry H9 avian influenza vaccine that provides cross-protection against multiple H9 lineages, two Newcastle disease virus (NDV) LaSota vaccine strain recombinant viruses were generated using reverse genetics. The recombinant NDV-H9Con virus expresses a consensus-H9 hemagglutinin (HA) that is designed based on available H9N2 sequences from Chinese and Middle Eastern isolates. The recombinant NDV-H9Chi virus expresses a chimeric-H9 HA in which the H9 ectodomain of A/Guinea Fowl/Hong Kong/WF10/99 was fused with the cytoplasmic and transmembrane domain of the fusion protein (F) of NDV. Both recombinant viruses expressed the inserted HA stably and grew to high titers. An efficacy study in chickens showed that both recombinant viruses were able to provide protection against challenge with a heterologous H9N2 virus. In contrast to the NDV-H9Chi virus, the NDV-H9Con virus induced a higher hemagglutination inhibition titer against both NDV and H9 viruses in immunized birds, and efficiently inhibited virus shedding through the respiratory route. Moreover, sera collected from birds immunized with either NDV-H9Con or NDV-H9Chi were able to cross-neutralize two different lineages of H9N2 viruses, indicating that NDV-H9Con and NDV-H9Chi are promising vaccine candidates that could provide cross-protection among different H9N2 lineage viruses. (C) 2016 Elsevier Ltd. All rights reserved.
分类号: R392
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