Establishment of stable Vero cell lines expressing TMPRSS2 and MSPL: A useful tool for propagating porcine epidemic diarrhea virus in the absence of exogenous trypsin

文献类型： 外文期刊

第一作者： Wang, Xiaona

作者： Wang, Xiaona;Qiao, Xinyuan;Sui, Ling;Li, Fengsai;Guo, Yuyao;Jiang, Yanping;Wang, Li;Zhou, Han;Tang, Lijie;Xu, Yigang;Li, Yijing;Qiao, Xinyuan;Tang, Lijie;Xu, Yigang;Li, Yijing;Zhao, Haiyuan;Tang, Yan-Dong;Shi, Wen

作者机构：

关键词： Porcine epidemic diarrhea virus; TMPRSS2; MSPL; Vero cell lines; isolation and propagation

期刊名称：VIRULENCE （ 影响因子：5.428； 五年影响因子：6.735 ）

ISSN： 2150-5594

年卷期： 2020 年 11 卷 1 期

页码：

收录情况： SCI

摘要： Porcine epidemic diarrhea virus (PEDV) is the causative agent of porcine epidemic diarrhea, causing substantial economic losses to the swine industry worldwide. However, the development of PEDV vaccine is hampered by its low propagation titer in vitro, due to difficulty in adapting to the cells and complex culture conditions, even in the presence of trypsin. Furthermore, the frequent variation, recombination, and evolution of PEDV resulted in reemergence and vaccination failure. In this study, we established the Vero/TMPRSS2 and Vero/MSPL cell lines, constitutively expressing type II transmembrane serine protease TMPRSS2 and MSPL, in order to increase the stability and titer of PEDV culture and isolation in vitro. Our study revealed that the Vero/ TMPRSS2, especially Vero/MSPL cell lines, can effectively facilitate the titer and multicycle replication of cell-adapted PEDV in the absence of exogenous trypsin, by cleaving and activating PEDV S protein. Furthermore, our results also highlighted that Vero/TMPRSS2 and Vero/MSPL cells can significantly enhance the isolation of PEDV from the clinical tissue samples as well as promote viral infection and replication by cell-cell fusion. The successful construction of the Vero/TMPRSS2 and Vero/MSPL cell lines provides a useful approach for the isolation and propagation of PEDV, simplification of virus culture, and large-scale production of industrial vaccine, and the cell lines are also an important system to research PEDV S protein cleaved by host protease.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序