Modulation of Antiviral Immunity by Heme Oxygenase-1

Abstract : Heme oxygenase-1 (HO-1) is a stress-inducible, anti-inflammatory, and cytoprotective enzyme expressed in most cell types in the organism. Under several stress stimuli, HO-1 expression and activity is up-regulated to catalyze the rate-limiting enzymatic step of heme degradation into carbon monoxide, free iron, and biliverdin. Besides its effects on cell metabolism, HO-1 is also capable of modulating host innate and adaptive immune responses in response to sepsis, transplantation, and autoimmunity, and preventing oxidative damage associated with inflammation. In addition, recent studies have reported that HO-1 can exert a significant antiviral activity against a wide variety of viruses, including HIV, hepatitis C virus, hepatitis B virus, enterovirus 71, influenza virus, respiratory syncytial virus, dengue virus, and Ebola virus, among others. Herein, we address the current understanding of the functional significance of HO-1 against a variety of viruses and its potential as a therapeutic strategy to prevent and control viral infections. Furthermore, we review the most important features of the immunoregu-latory functions for this enzyme.
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Janyra Espinoza, Pablo Gonzalez, Alexis Kalergis. Modulation of Antiviral Immunity by Heme Oxygenase-1. American Journal of Pathology, American Society for Investigative Pathology, 2017, 187 (3), pp.487-493. ⟨10.1016/j.ajpath.2016.11.011⟩. ⟨inserm-02153859⟩

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