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Molecular targeting of antiviral drugs used against hepatitis C virus infection

M. Irshad,Priyanka Gupta,Khushboo Irshad

Published 2018 in Hepatoma Research

ABSTRACT

Present study reports an update on the molecular interaction of antiviral drugs with viral and host cell components during hepatitis C virus (HCV) infection. In addition to the traditional therapeutic drug regimen, termed as standard of care, some recent drugs have been added in the existing regimen used for HCV infection. These drugs were categorized as direct-acting antivirals (DAAs) agents and “other agents”, with their efficacious impact in the control of HCV infection. They target both viral proteases and host cell receptor proteins/enzymes involved in HCV entry into the cell, replication, and assembly to check their propagation both in situ as well as in cell to cell transmission. Recent studies have reported a significant rise in sustained virological response after the use of these drugs both alone and in combination with pegylated interferon-α (PegIFN-α) plus ribavirin. Recently, DAAs have been reported to be highly effective in eradication of HCV infection, especially liver cirrhosis, reducing but not avoiding the occurrence of liver cancer. Some studies have demonstrated that the presence of resistant HCV variants, arising during viral replication, may be controlled by the new drug regimen. It is important to note here that all these drugs are influenced by viral as well as host factors including basic viral load, HCV genotypes, IFN action, interleukin 28B polymorphism and some liver and metabolic diseases, etc . This is an area with on-going investigations to explore more antiviral agents that may address new challenges in HCV therapy.

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