An M2e-based synthetic peptide vaccine for influenza A virus confers heterosubtypic protection from lethal virus challenge

文献类型： 外文期刊

第一作者： Ma, Ji-Hong

作者： Ma, Ji-Hong;Yang, Fu-Ru;Yu, Hai;Zhou, Yan-Jun;Li, Guo-Xin;Huang, Meng;Wen, Feng;Tong, Guangzhi

作者机构：

关键词： Influenza A virus;Influenza;M2e;Synthetic peptide vaccine

期刊名称：VIROLOGY JOURNAL （ 影响因子：4.099； 五年影响因子：3.719 ）

ISSN： 1743-422X

年卷期： 2013 年 10 卷

页码：

收录情况： SCI

摘要： Background: Vaccination is considered as the most effective preventive method to control influenza. The hallmark of influenza virus is the remarkable variability of its major surface glycoproteins, HA and NA, which allows the virus to evade existing anti-influenza immunity in the target population. So it is necessary to develop a novel vaccine to control animal influenza virus. Also we know that the ectodomain of influenza matrix protein 2 (M2e) is highly conserved in animal influenza A viruses, so a vaccine based on the M2e could avoid several drawbacks of the traditional vaccines. In this study we designed a novel tetra-branched multiple antigenic peptide (MAP) based vaccine, which was constructed by fusing four copies of M2e to one copy of foreign T helper (Th) cell epitope, and then investigated its immune responses. Results: Our results show that the M2e-MAP induced strong M2e-specific IgG antibody, which responses following 2 doses immunization in the presence of Freunds' adjuvant. M2e-MAP vaccination limited viral replication substantially. Also it could attenuate histopathological damage in the lungs of challenged mice and counteracted weight loss. M2e-MAP-based vaccine protected immunized mice against the lethal challenge with PR8 virus. Conclusions: Based on these findings, M2e-MAP-based vaccine seemed to provide useful information for the research of M2e-based influenza vaccine. Also it show huge potential to study vaccines for other similarly viruses.

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