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Effects of alpha interferon treatment on intrinsic anti-HIV-1 immunity in vivo
Mohamed Abdel-Mohsen1, Xutao Deng, Teri Liegler
1Department of Medicine, University of California, San Francisco, San Francisco, California, USA.
Abstract:
Alpha interferon (IFN-α) suppresses human immunodeficiency virus type 1 (HIV-1) replication in vitro by inducing cell-intrinsic retroviral restriction mechanisms. We investigated the effects of IFN-α/ribavirin (IFN-α/riba) treatment on 34 anti-HIV-1 restriction factors in vivo. Expression of several anti-HIV-1 restriction factors was significantly induced by IFN-α/riba in HIV/hepatitis C virus (HCV)-coinfected individuals. Fold induction of cumulative restriction factor expression in CD4(+) T cells was significantly correlated with viral load reduction during IFN-α/riba treatment (r(2) = 0.649; P < 0.016). Exogenous IFN-α induces supraphysiologic restriction factor expression associated with a pronounced decrease in HIV-1 viremia.
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