Proteases of human rhinovirus: role in infection - PubMed

Review

Proteases of human rhinovirus: role in infection

Lora M Jensen et al. Methods Mol Biol. 2015.

Abstract

Human rhinoviruses (HRV) are the major etiological agents of the common cold and asthma exacerbations, with significant worldwide health and economic impact. Although large-scale population vaccination has proved successful in limiting or even eradicating many viruses, the more than 100 distinct serotypes mean that conventional vaccination is not a feasible strategy to combat HRV. An alternative strategy is to target conserved viral proteins such as the HRV proteases, 2A(pro) and 3C(pro), the focus of this review. Necessary for host cell shutoff, virus replication, and pathogenesis, 2A(pro) and 3C(pro) are clearly viable drug targets, and indeed, 3C(pro) has been successfully targeted for treating the common cold in experimental infection. 2A(pro) and 3C(pro) are crucial for virus replication due to their role in polyprotein processing as well as cleavage of key cellular proteins to inhibit cellular transcription and translation. Intriguingly, the action of the HRV proteases also disrupts nucleocytoplasmic trafficking, contributing to HRV cytopathic effects. Improved understanding of the protease-cell interactions should enable new therapeutic approaches to be identified for drug development.

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