HCV-core protein accelerates recovery from the insensitivity of liver cells to Fas-mediated apoptosis induced by an injection of anti-Fas antibody in mice.

Abstract:

BACKGROUND/AIMS:Hepatitis C virus (HCV) is a major etiologic agent of chronic hepatitis, cirrhosis, and hepatocellular carcinoma. The aim of this study was to elucidate pathological effects of HCV-core protein on liver cells. METHODS:We have generated transgenic mice carrying HCV-core cDNA (Px-core) and pathologically examined livers of Px-core mice. RESULTS:HCV-core protein was detectable in livers from lines 5 (C5) and 8 (C8) of Px-core transgenic mice. Since chronic hepatitis and cirrhosis precede hepatocellular carcinoma in patients with HCV infection, we tried to examine the effect of repetitive injection of a small dose of anti-Fas antibody in the transgenic mice. Surprisingly, an initial injection of anti-Fas antibody induced resistance of liver cells to the second injection of anti-Fas antibody in both Px-core and littermate control mice. The insensitivity of liver cells induced in the control mice continued for more than 24 weeks after the first injection but was broken within 1 week after partial hepatectomy. However, the sensitivity was restored in the Px-core mice within 12 weeks after the injection. CONCLUSION:HCV-core protein in liver cells may affect persistence of Fas-mediated liver cell injury.

journal_name

J Hepatol

journal_title

Journal of hepatology

authors

Honda A,Hatano M,Kohara M,Arai Y,Hartatik T,Moriyama T,Imawari M,Koike K,Yokosuka O,Shimotohno K,Tokuhisa T

doi

10.1016/s0168-8278(00)80280-9

subject

Has Abstract

pub_date

2000-09-01 00:00:00

pages

440-7

issue

3

eissn

0168-8278

issn

1600-0641

pii

S0168-8278(00)80280-9

journal_volume

33

pub_type

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