期刊
WORLD JOURNAL OF GASTROENTEROLOGY
卷 13, 期 36, 页码 4865-4872出版社
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.3748/wjg.v13.i36.4865
关键词
hepatitis C; spoptosis; TRAIL; CD95/Fas; TNF alpha; perforin
Apoptosis is central for the control and elimination of viral infections. In chronic hepatitis C virus (HCV) infection, enhanced hepatocyte apoptosis and upregulation of the death inducing ligands CD95/Fas, TRAIL and TNF alpha occur. Nevertheless, HCV infection persists in the majority of patients. The impact of apoptosis in chronic HCV infection is not well understood. It may be harmful by triggering liver fibrosis, or essential in interferon (IFN) induced HCV elimination. For virtually all HCV proteins, pro- and anti-apoptotic effects have been described, especially for the core and NS5A protein. To date, it is not known which HCV protein affects apoptosis in vivo and whether the infectious virions act pro- or antiapoptotic. With the availability of an infectious tissue culture system, we now can address pathophysiologically relevant issues. This review focuses on the effect of HCV infection and different HCV proteins on apoptosis and of the corresponding signaling cascades. (c) 2007 WJG. All rights reserved.
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