2 log10IU/mL was the optimal cut-off for characterizing cholestatic hepatitis C. All of the patients were serum HCV RNA negative after treatment with pegylated interferon and ribavirin and all the patients are alive. Early extensive viremia, but not the rs8099917 genotype, was the only predictor for cholestatic hepatitis C after LDLT. “
“Liver and pancreatic cancers are both highly lethal diseases with limited to no therapeutic options for patients. Recent studies suggest that deregulated autophagy plays a role in the pathogenesis of these diseases by perturbing cellular homeostasis and
laying the foundation for disease development. While RAD001 accumulation of p62 upon impaired autophagy has been implicated in hepatocellular carcinoma, its role in pancreatic ductal adenocarcinoma remains less clear. This review will focus on recent studies illustrating the role of autophagy in liver and pancreatic cancers. The relationships between autophagy, nuclear factor-κB signaling AZD9668 mouse and obesity in hepatocellular carcinoma will be discussed, as well as the dual role of autophagy in pancreatic ductal adenocarcinoma. “
“Host cellular factor apolipoprotein B messenger RNA (mRNA)-editing enzyme
catalytic polypeptide-like 3G (hA3G) is a cytidine deaminase that inhibits a group of viruses including human immunodeficiency virus-1 (HIV-1). In the continuation of our research on hA3G, we found that hA3G stabilizing compounds significantly inhibited hepatitis C virus (HCV) replication. Therefore, this study investigated the role of hA3G in HCV replication. Introduction of external hA3G into HCV-infected Huh7.5 human hepatocytes inhibited HCV replication; knockdown of endogenous hA3G enhanced HCV replication. Exogenous HIV-1 virion infectivity factor (Vif) decreased intracellular hA3G and therefore enhanced HCV proliferation, 3-mercaptopyruvate sulfurtransferase suggesting that the presence of Vif might
be an explanation for the HIV-1/HCV coinfection often observed in HIV-1(+) individuals. Treatment of the HCV-infected Huh7.5 cells with RN-5 or IMB-26, two known hA3G stabilizing compounds, increased intracellular hA3G and accordingly inhibited HCV replication. The compounds inhibit HCV through increasing the level of hA3G incorporated into HCV particles, but not through inhibiting HCV enzymes. However, G/A hypermutation in the HCV genome were not detected, suggesting a new antiviral mechanism of hA3G in HCV, different from that in HIV-1. Stabilization of hA3G by RN-5 was safe in vivo. Conclusion: hA3G appears to be a cellular restrict factor against HCV and could be a potential target for drug discovery. (HEPATOLOGY 2011;) Human APOBEC3G (apolipoprotein B messenger RNA [mRNA]-editing enzyme catalytic polypeptide-like 3G, hA3G) belongs to the APOBEC superfamily, which covers at least 10 members sharing a cytidine deaminase motif (a conserved His-X-Glu and Cys-X-X-Cys Zn2+ coordination motif).
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