Infections with hepatitis C virus (HCV) genotype 3 exhibit differences in clinical phenotype including an increase in response to interferon therapy and development of steatosis. To initiate studies on genotype 3, we created a chimeric genotype 1b replicon containing a genotype 3a NS5A domain. The chimera was capable of efficient colony formation after the selection of a novel dominant adaptive mutation. Thus, domains from highly different strains can interact to form a functional replicase. A new genotype 1a replicon was constructed as well. Genotype specific influence on interferon sensitivity was examined using genotype 1a, 1b and chimeric 1b-3a replicons. The genotype 3a NS5A domain did not increase the sensitivity of the chimeric replicon to IFNalpha. The results suggest that NS5A is not sufficient to convey the increased IFNalpha response by genotype 3 or the replicon model is not capable of mimicking the events involved in increased sustained viral response.
Hepatitis C virus genotype 1b chimeric replicon containing genotype 3 NS5A domain. Publishing Authors By Initials
Chemical & Substance for Abstract: Hepatitis C virus genotype 1b chimeric replicon containing genotype 3 NS5A domain. Information
Substance Name: Viral Nonstructural Proteins
Registry Number: 0
Grant and Affiliation Information for Hepatitis C virus genotype 1b chimeric replicon containing genotype 3 NS5A domain.
AFFILIATION: Department of Virology and Immunology, Southwest National Primate Research Center, Southwest Foundation for Biomedical Research, 7620 NW Loop 410, San Antonio, TX 78227, USA. rlanford@icarus.sfbr.org
Country: United States
AGENCY: United States NIAID
GRANT: U19 AI40035
ACRONYM: AI
MEDLINETA: Virology
REFSOURCE:
DATABASENAME:
ACCESSION NUMBER:
Number Hits: 0
Hepatitis C virus genotype 1b chimeric replicon containing genotype 3 NS5A domain Related Publications