SiRNA Screen for Genes That Affect Junín Virus Entry Uncovers Voltage-gated Calcium Channels As a Therapeutic Target

Overview

Journal Sci Transl Med

Specialties General Medicine
Science

Date 2013 Sep 27

PMID 24068738

Citations 49

Authors

Madakasira Lavanya

Christian D Cuevas

Monica Thomas

Sara Cherry

Susan R Ross

Affiliations

Soon will be listed here.

Abstract

New World hemorrhagic fever arenavirus infection results in 15 to 30% mortality in humans. We performed a high-throughput small interfering RNA screen with Junín virus glycoprotein-pseudotyped viruses to find potential host therapeutic targets. Voltage-gated calcium channel (VGCC) subunits, for which there are Food and Drug Administration (FDA)-approved drugs, were identified in the screen. Knockdown of VGCC subunits or treatment with channel blockers diminished Junín virus-cell fusion and entry into cells and thereby decreased infection. Gabapentin, an FDA-approved drug used to treat neuropathic pain that targets the α₂δ₂ subunit, inhibited infection of mice by the Candid 1 vaccine strain of the virus. These findings demonstrate that VGCCs play a role in virus infection and have the potential to lead to therapeutic intervention of New World arenavirus infection.

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