Recombinant adenovirus expressing type Asia1 foot-and-mouth disease virus capsid proteins induces protective immunity against homologous virus challenge in mice

文献类型： 外文期刊

第一作者： Zhou, Guohui

作者： Zhou, Guohui;Wang, Haiwei;Wang, Fang;Yu, Li

作者机构：

关键词： Foot-and-mouth disease virus;Replication-defective adenovirus expression of capsid proteins;Immune protection

期刊名称：RESEARCH IN VETERINARY SCIENCE （ 影响因子：2.534； 五年影响因子：2.382 ）

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收录情况： SCI

摘要： Foot-and-mouth disease (FMD) is a highly contagious disease worldwide affecting cloven-hoofed animals that is caused by foot-and-mouth disease virus (FMDV). The FMDV capsid polyprotein and 3C proteinase are required for capsid precursor processing and assembly. The FMDV capsid protein, which contains the entire repertoire of immunogenic sites, can stimulate both humoral immunity and T-cell-mediated immune responses. In this study, we constructed a recombinant adenovirus, rAdV-Asi-05, that expresses the P1-2A and 3C genes of the type Asia1 FMDV strain Asia1/YS/CHA/05. The humoral immune responses elicited by the Ad5-vectored capsid protein of type Asia1 FMDV in BALB/c mice and the ability of rAdV-Asi-05 to rapidly induce protection against challenge with FMDV Asia1/YS/CHA/05 in C57BL/6 mice were evaluated. The processing of polyprotein PI into the structural proteins VP0, VP3, and VP1 in rAdV-Asi-05-infected HEK 293 cells was detected by Western blotting. BALB/c mice immunised with rAdV-Asi-05 produced type Asia1 FMDV-specific neutralising antibodies, and the neutralisation titres increased significantly after the boost. Importantly, C57BL/6 mice immunised with a single 10(7) PFU dose of rAdV-Asi-05 exhibited protective immunity against challenge with 100 times the lethal dose of FMDV Asia1/YS/CHA/05. In summary, rAdV-Asi-05 elicited a high titre of neutralising antibodies against type Asia1 FMDV in BALB/c mice. Moreover, rAdV-Asi-05 provided complete protection against FMDV Asia1/YS/CHA/05 challenge in C57BL/6 mice. This study highlights the potential of rAdV-Asi-05 to serve as a type Asia1 FMDV vaccine

分类号： S85

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