Protective efficacy of an H1N1 cold-adapted live vaccine against the 2009 pandemic H1N1, seasonal H1N1, and H5N1 influenza viruses in mice
文献类型: 外文期刊
第一作者: Shi, Jianzhong
作者: Shi, Jianzhong;Wen, Zhiyuan;Guo, Jing;Zhang, Ying;Deng, Guohua;Jiang, Yongping;Bu, Zhigao;Chen, Hualan;Shu, Yuelong;Wang, Dayan;Kawaoka, Yoshihiro
作者机构:
关键词: H1N1;H5N1;Influenza;Live attenuated vaccine
期刊名称:ANTIVIRAL RESEARCH ( 影响因子:5.97; 五年影响因子:5.801 )
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收录情况: SCI
摘要: Vaccination is a key strategy for preventing influenza virus infections. Here, we generated a reassortant virus (SC/AAca) containing the hemagglutinin and neuraminidase genes from a 2009 pandemic influenza virus A/Sichuan/1/2009 (H1N1) (SC/09) and six internal genes from the cold-adapted virus A/Ann Arbor/6/60 (H2N2) (AAca). The SC/AAca reassortant induced a sound humoral immune response and complete protection against homologous SC/09 virus challenge in mice after intranasal administration of an at least 10 6 50% egg infectious dose (EID 50) of SC/AAca. SC/AAca inoculation also induced significant CD4+ and CD8+ T cell responses and provided solid protection against heterologous H1N1 and H5N1 virus challenge. Our results suggest that this 2009 H1N1 live vaccine will provide protection against both 2009 pandemic and seasonal H1N1 virus infection and might reduce the severity of H5N1 virus infection in humans. The induction of cross-reactive virus-specific T cell responses may be an effective approach to develop universal influenza vaccines.
分类号: R37
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