期刊
NATURE MEDICINE
卷 19, 期 6, 页码 722-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nm.3190
关键词
-
资金
- Intramural Research Program of the NIDDK, US National Institutes of Health (NIH)
Hepatitis C virus (HCV) interacts extensively with host factors to not only establish productive infection but also trigger unique pathological processes. Our recent genome-wide siRNA screen demonstrated that I kappa B kinase-alpha (IKK-alpha) is a crucial host factor for HCV. Here we describe a new nuclear factor kappa B (NF-kappa B)-independent and kinase-mediated nuclear function of IKK-a in HCV assembly. HCV, through its 3' untranslated region, interacts with DEAD box polypeptide 3, X-linked (DDX3X) to activate IKK-alpha, which translocates to the nucleus and induces a CBP/p300-mediated transcriptional program involving sterol regulatory element-binding proteins (SREBPs). This innate pathway induces lipogenic genes and enhances core-associated lipid droplet formation to facilitate viral assembly. Chemical inhibitors of IKK-alpha suppress HCV infection and IKK-alpha-induced lipogenesis, offering a proof-of-concept approach for new HCV therapeutic development. Our results show that HCV uses a novel mechanism to exploit intrinsic innate responses and hijack lipid metabolism, which may contribute to high chronicity rates and the pathological hallmark of steatosis in HCV infection.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据