Deubiquitinating Enzyme Inhibitors Block Chikungunya Virus Replication

Overview

Journal Viruses

Publisher MDPI

Specialty Microbiology

Date 2023 Feb 28

PMID 36851696

Authors

Lady S Lopez

Eliana P Calvo

Jaime E Castellanos

Affiliations

Soon will be listed here.

Abstract

Ubiquitination and deubiquitination processes are widely involved in modulating the function, activity, localization, and stability of multiple cellular proteins regulating almost every aspect of cellular function. Several virus families have been shown to exploit the cellular ubiquitin-conjugating system to achieve a productive infection: enter the cell, promote genome replication, or assemble and release viral progeny. In this study, we analyzed the role of deubiquitinating enzymes (DUBs) during chikungunya virus (CHIKV) infection. HEK293T, Vero-E6, and Huh-7 cells were treated with two DUB inhibitors (PR619 or WP1130). Then, infected cells were evaluated by flow cytometry, and viral progeny was quantified using the plaque assay method. The changes in viral proteins and viral RNA were analyzed using Western blotting and RT-qPCR, respectively. Results indicate that treatment with DUB inhibitors impairs CHIKV replication due to significant protein and viral RNA synthesis deregulation. Therefore, DUB activity may be a pharmacological target for blocking CHIKV infection.

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