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Secreted Interferon-Inducible Factors Restrict Hepatitis B and C Virus Entry In Vitro

Overview
Journal J Immunol Res
Publisher Wiley
Date 2017 Apr 4
PMID 28367455
Citations 20
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Abstract

Interferon- (IFN-) has been used for more than 20 years as the first-line therapy for hepatitis B virus (HBV) and hepatitis C virus (HCV) infection, because it has a number of antiviral effects. In this study, we describe a novel mode of its antiviral action. We demonstrate that the supernatant from IFN--treated cultured cells restricted HBV and HCV infection by inhibiting viral entry into hepatoma cells. The factors contained in the supernatant competed with the virus for binding to heparan glycosaminoglycans-the nonspecific attachment step shared by HBV and HCV. Secreted factors of high molecular mass that bind to heparin columns elicited the antiviral effect. In conclusion, IFN- is able to induce soluble factors that can bind to heparan glycosaminoglycans thus leading to the inhibition of viral binding.

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