Cellular hnRNPAB interacts with avian influenza viral protein PB2 and inhibits virus replication potentially by restricting PB2 mRNA nuclear export and PB2 protein level

文献类型： 外文期刊

第一作者： Ye, Hongliu

作者： Ye, Hongliu;Fan, Wentao;Song, Suquan;Yan, Liping;Bi, Zhenwei

作者机构：

关键词： Avian influenza virus; PB2; hnRNPAB; Polymerase activity; Virus replication; Nucleo-cytoplasmic distribution

期刊名称：VIRUS RESEARCH （ 影响因子：3.303； 五年影响因子：3.445 ）

ISSN： 0168-1702

年卷期： 2021 年 305 卷

页码：

收录情况： SCI

摘要： The PB2 protein of avian influenza virus (AIV) is essential for transcription and replication of virus genome. In this study, we reported that chicken heterogenous nuclear riboncleoprotein AB (hnRNPAB) cooperated with avian influenza viral protein PB2 and inhibited the polymerase activity and virus replication. We found that hnRNPAB was associated with PB2 mRNA and overexpression of hnRNPAB reduced PB2 mRNA nuclear export and PB2 protein level, but had no influence on PB2 mRNA level. At the same time, overexpression of hnRNPAB also reduced protein levels rather than mRNA levels of PA, PB1 and NP. In addition, overexpression of hnRNPAB restricted the polymerase activity and virus replication, while knockdown of hnRNPAB resulted in enhanced polymerase activity and virus replication. Lastly, virus infection induced the nuclear accumulation of hnRNPAB, but did not cause the change of expression level of endogenous hnRNPAB in DF-1 cells. Collectively, these findings suggested that hnRNPAB played a restrictive role in polymerase activity and virus replication potentially through inhibiting PB2 mRNA nuclear export and PB2 protein level.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序