Negative feedback regulation of cellular antiviral signaling by RBCK1-mediated degradation of IRF3

被引：119

作者：

Zhang, Min ^{[1
]}

Tian, Yang ^{[1
]}

Wang, Rui-Peng ^{[1
]}

Gao, Dong ^{[1
]}

Zhang, Yan ^{[1
]}

Diao, Fei-Ci ^{[1
]}

Chen, Dan-Ying ^{[1
]}

Zhai, Zhong-He ^{[1
]}

Shu, Hong-Bing ^{[2
]}

机构：

[1] Peking Univ, Coll Life Sci, Beijing 100871, Peoples R China

[2] Wuhan Univ, Coll Life Sci, Wuhan 430072, Peoples R China

来源：

CELL RESEARCH | 2008年 / 18卷 / 11期

基金：

中国国家自然科学基金;

关键词：

RBCK1; IRF3; antiviral response; type I IFNs; feedback regulation; E3; ligase;

D O I：

10.1038/cr.2008.277

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Viral infection causes host cells to produce type I interferons (IFNs), which are critically involved in viral clearance. Previous studies have demonstrated that activation of the transcription factor interferon regulatory factor (IRF) 3 is essential for virus-triggered induction of type I IFNs. Here we show that the E3 ubiquitin ligase RBCC protein interacting with PKC1 (RBCK1) catalyzes the ubiquitination and degradation of IRF3. Overexpression of RBCK1 negatively regulates Sendai virus-triggered induction of type I IFNs, while knockdown of RBCK1 has the opposite effect. Plaque assays consistently demonstrate that RBCK1 negatively regulates the cellular antiviral response. Furthermore, viral infection leads to induction of RBCK1 and subsequent degradation of IRF3. These findings suggest that the cellular antiviral response is controlled by a negative feedback regulatory mechanism involving RBCK1-mediated ubiquitination and degradation of IRF3.

引用

页码：1096 / 1104

页数：9

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