Cleavage of AUF1 by Coxsackievirus B Affects DDX5 Regulatory on Viral Replication through iTRAQ Proteomics Analysis.

Cleavage of AUF1 by Coxsackievirus B Affects DDX5 Regulatory on Viral Replication through iTRAQ Proteomics Analysis.
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通过 iTRAQ 蛋白质组学分析,柯萨奇病毒 B 切割 AUF1 会影响 DDX5 对病毒复制的调节

DOI:
10.1155/2022/8610467
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发表时间:
2022
影响因子:
--
通讯作者:
Guan, Jun
Guan, Jun
中科院分区:
生物学3区
文献类型:
--
作者:
Wang, Tianying;Qin, Yujing;Chen, Jiansheng;Chen, Shuang;Wu, Jingqi;Chen, Xuepin;Chen, Xiaomeng;Zhou, Shaofei;Zou, Jianhong;Guan, Jun

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柯萨奇病毒B(CVB)3C蛋白酶(3Cpro)对富AU结合因子(AUF 1,也称为hnRNP D)具有特异性切割作用,因此对AUF 1对下游分子的调控存在争议。在我们的研究中,iTRAQ方法首次用于定量AUF 1过表达HeLa细胞中差异表达的细胞蛋白,这为了解AUF 1在病毒感染期间的作用提供了直接的见解。共鉴定了1,290个差异表达蛋白(DEPs),包括882个上调蛋白和408个下调蛋白。DEP通过GO术语、蛋白质-蛋白质相互作用和一系列进一步的生物信息学分析参与各种细胞过程。在DEPs中,一些在细胞代谢中表现出重要作用。特别是,DDX 5被进一步验证为受AUF 1负调控,并且在CVB感染的细胞中增加,这反过来促进CVB复制。这些发现为探索新的抗病毒治疗靶点提供了新的思路。
Coxsackievirus B (CVB) 3C protease (3Cpro) plays a specific cleavage role on AU-rich binding factor (AUF1, also called hnRNP D), which consequently disputes the regulation of AUF1 on downstream molecules. In our study, the iTRAQ approach was first used to quantify the differentially expressed cellular proteins in AUF1-overexpressing HeLa cells, which provides straightforward insight into the role of AUF1 during viral infection. A total of 1,290 differentially expressed proteins (DEPs), including 882 upregulated and 408 downregulated proteins, were identified. The DEPs are involved in a variety of cellular processes via GO terms, protein–protein interactions, and a series of further bioinformatics analyses. Among the DEPs, some demonstrated important roles in cellular metabolism. In particular, DDX5 was further verified to be negatively regulated by AUF1 and increased in CVB-infected cells, which in turn promoted CVB replication. These findings provide potential novel ideas for exploring new antiviral therapy targets.
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