数字农科院2.0

The rescue and evaluation of FLAG and HIS epitope-tagged Asia 1 type foot-and-mouth disease viruses

文献类型： 外文期刊

作者： Yang, Bo;Yang, Fan;Zhang, Yan;Liu, Huanan;Jin, Ye;Cao, Weijun;Zhu, Zixiang;Zheng, Haixue;Yin, Hong

作者机构：

关键词： Foot-and-mouth disease virus (FMDV);Reverse genetic;Recombinant;Marker vaccine

期刊名称： VIRUS RESEARCH

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收录情况： SCI

摘要： The VP1 G-H loop of the foot-and-mouth disease virus (FMDV) contains the primary antigenic site, as well as an Arg-Gly-Asp (RGD) binding motif for the alpha v-integrin family of cell surface receptors. We anticipated that introducing a foreign epitope tag sequence downstream of the RGD motif would be tolerated by the viral capsid and would not destroy the antigenic site of FMDV. In this study, we have designed, generated, and characterized two recombinant FMDVs with a FLAG tag or histidine (HIS) inserted in the VP1 G-H loop downstream of the RGD motif +9 position. The tagged viruses were genetically stable and exhibited similar growth properties with their parental virus. What is more, the recombinant viruses rFMDVFLAG and rFMDV-HIS showed neutralization sensitivity to FMDV type Asial-specific mAbs, as well as to polyclonal antibodies. Additionally, the r(1) values of the recombinant viruses were similar to that of the parental virus, indicating that the insertion of FLAG or HIS tag sequences downstream of the RGD motif +9 position do not eradicate the antigenic site of FMDV and do not affect its antigenicity. These results indicated that the G-H loop of Asial FMDV is able to effectively display the foreign epitopes, making this a potential approach for novel FMDV vaccines development. (C) 2015 Elsevier B.V. All rights reserved.

分类号： R37

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