A Library of Infectious Hepatitis C Viruses with Engineered Mutations in the E2 Gene Reveals Growth-Adaptive Mutations That Modulate Interactions with Scavenger Receptor Class B Type I

Overview

Journal J Virol

Publisher American Society for Microbiology

Date 2016 Sep 16

PMID 27630236

Citations 10

Authors

Adam Zuiani

Kevin Chen

Megan C Schwarz

James P White

Vincent C Luca

Daved H Fremont

David Wang

Matthew J Evans

Michael S Diamond

Affiliations

Soon will be listed here.

Abstract

Importance: Characterizing variant viruses can reveal new information about the life cycle of HCV and the roles played by different viral genes. However, it is difficult to recapitulate high levels of diversity in the laboratory because of limitations in the HCV culture system. To overcome this limitation, we engineered a library of mutations into the E2 gene in the context of an infectious clone of the virus. We used this library of viruses to identify nine mutations that enhance the growth rate of HCV. These growth-enhancing mutations reduced the dependence on a key entry receptor, SR-BI. By generating a highly diverse library of infectious HCV, we mapped regions of the E2 protein that influence a key virus-host interaction and provide proof of principle for the generation of large-scale mutant libraries for the study of pathogens with great sequence variability.

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