Article ID Journal Published Year Pages File Type
9286791 Virology 2005 6 Pages PDF
Abstract
The hepatitis C virus (HCV) subgenomic replicon system was used to study a possible involvement of nonstructural protein 5A (NS5A) in the mechanisms of HCV resistance to interferon alpha (IFN-α). A series of chimeric HCV replicons was constructed. In these replicons, the NS5A gene in the backbone of the Con1 replicon was swapped by corresponding fragments obtained from four IFN-α responder and four IFN-α nonresponder patients that had been infected with the same HCV AD78 strain. Experiments with transfected Huh7 cells did not reveal significant differences in sensitivity of HCV RNA replication to IFN-α in cell clones, bearing chimeric Con1/AD78 replicons with NS5A sequences from IFN responders and nonresponders. Thus, these data provide no evidence that the NS5A protein contributes to the resistance of HCV replication to IFN-α.
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Life Sciences Immunology and Microbiology Virology
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