Nuclear localization of the p17 protein of avian reovirus is correlated with autophagy induction and an increase in viral replication

被引:0
|
作者
Chenxi Li
Hongchen Wei
Liping Yu
Shipeng Duan
Jinghua Cheng
Wenguang Yan
Xiaorong Zhang
Yantao Wu
机构
[1] Yangzhou University,Jiangsu Co
来源
Archives of Virology | 2015年 / 160卷
关键词
Vero Cell; Nuclear Localization Signal; Newcastle Disease Virus; Chicken Embryo Fibroblast Cell; Avian Reovirus;
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摘要
p17 is a nonstructural protein of avian reovirus (ARV) that induces autophagy in infected cells. In the present study, we investigated the effect of p17 and its nuclear localization signal (NLS) on autophagy and viral replication. When Vero cells and DF1 cells were transfected with mutant p17 in which lysine (K) at position 122 and arginine (R) at position 123 were mutated to alanine (A), the expression level of LC3 II decreased dramatically after transfection. The expression of the polypeptide encompassing the first 103 amino acids of p17, a region that did not contain the NLS, did not have a significant effect on autophagy. Moreover, when cells overexpressing mutant p17 were infected with the ARV GX2010/1 strain, the viral titer was significantly decreased compared with the expression of wild-type p17. In general, the NLS of p17 facilitates the induction of autophagy and is correlated with an increase in virus production.
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页码:3001 / 3010
页数:9
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