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Updated: Jul 14, 2026
13:04
A Protocol for Analyzing Hepatitis C Virus Replication
Published on: June 26, 2014
Replication-competent recombinant vesicular stomatitis virus encoding hepatitis C virus envelope proteins.
Hideki Tani1, Yasumasa Komoda, Eiko Matsuo
1Department of Molecular Virology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Suita, Osaka 565-0871, Japan.
Journal of Virology
|June 8, 2007
Summary
Researchers developed a new hepatitis C virus (HCV) system using vesicular stomatitis virus (VSV) to study prevalent HCV genotypes 1a and 1b. This system allows for HCV envelope protein analysis and potential therapeutic target identification.
Area of Science:
- Virology
- Molecular Biology
Background:
- Hepatitis C virus (HCV) genotype 2a replication is established in vitro, but not for prevalent genotypes 1a and 1b.
- Existing pseudotype virus systems (VSV, retrovirus) offer limited insights into HCV envelope proteins.
Purpose of the Study:
- To develop a replication-competent recombinant VSV system (HCVrv) encoding unmodified HCV E1 and E2 proteins.
- To evaluate HCVrv for studying HCV envelope protein functions in entry and maturation.
Main Methods:
- Constructed a replication-competent recombinant VSV encoding unmodified HCV E1 and E2 proteins (HCVrv).
- Generated and compared infectivity and propagation of HCVrv and HCV pseudotype VSV (HCVpv) in human cell lines.
- Assessed neutralization by antibodies and patient sera, and inhibition by glucosidase/mannosidase inhibitors.
Main Results:
- HCVrv and HCVpv showed high infectivity in Huh7 cells.
- HCVrv, unlike HCVpv, propagated and formed foci in Huh7 cells.
- Infection was neutralized by anti-hCD81, anti-E2 antibodies, and patient sera; HCVrv maturation was sensitive to an ER alpha-glucosidase inhibitor (Nn-DNJ).
Conclusions:
- HCVrv serves as a robust system for studying HCV envelope proteins.
- This system facilitates research into HCV entry mechanisms and protein maturation processes.
- Potential for developing new therapeutic strategies against prevalent HCV genotypes.
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