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2017 ; 7
(1
): 325
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Selective inhibitor of Wnt/?-catenin/CBP signaling ameliorates hepatitis C
virus-induced liver fibrosis in mouse model
#MMPMID28336942
Tokunaga Y
; Osawa Y
; Ohtsuki T
; Hayashi Y
; Yamaji K
; Yamane D
; Hara M
; Munekata K
; Tsukiyama-Kohara K
; Hishima T
; Kojima S
; Kimura K
; Kohara M
Sci Rep
2017[Mar]; 7
(1
): 325
PMID28336942
show ga
Chronic hepatitis C virus (HCV) infection is one of the major causes of serious
liver diseases, including liver cirrhosis. There are no anti-fibrotic drugs with
efficacy against liver cirrhosis. Wnt/?-catenin signaling has been implicated in
the pathogenesis of a variety of tissue fibrosis. In the present study, we
investigated the effects of a ?-catenin/CBP (cyclic AMP response element binding
protein) inhibitor on liver fibrosis. The anti-fibrotic activity of PRI-724, a
selective inhibitor of ?-catenin/CBP, was assessed in HCV GT1b transgenic mice at
18 months after HCV genome expression. PRI-724 was injected intraperitoneally or
subcutaneously in these mice for 6 weeks. PRI-724 reduced liver fibrosis, which
was indicated by silver stain, Sirius Red staining, and hepatic hydroxyproline
levels, in HCV mice while attenuating ?SMA induction. PRI-724 led to increased
levels of matrix metalloproteinase (MMP)-8 mRNA in the liver, along with elevated
levels of intrahepatic neutrophils and macrophages/monocytes. The induced
intrahepatic neutrophils and macrophages/monocytes were identified as the source
of MMP-8. In conclusion, PRI-724 ameliorated HCV-induced liver fibrosis in mice.
We hypothesize that inhibition of hepatic stellate cells activation and induction
of fibrolytic cells expressing MMP-8 contribute to the anti-fibrotic effects of
PRI-724. PRI-724 is a drug candidate which possesses anti-fibrotic effect.