Judith M. Gottwein,Troels Kasper Høyer Scheel,Jesper Eugen-Olsen,Jens Bukh
申请号:
US12595822
公开号:
US08945584B2
申请日:
2008.04.11
申请国别(地区):
US
年份:
2015
代理人:
摘要:
A robust and genetically stable cell culture system for Hepatitis C Virus (HCV) genotype 3a is provided. A genotype 3a/2a (S52/JFH1) recombinant containing the structural genes (Core, E1, E2), p7 and NS2 of strain S52 was constructed and characterized in Huh7.5 cells. S52/JFH1 and J6/JFH viruses passaged in cell culture had comparable growth kinetics and yielded similar peak HCV RNA titers and infectivity titers. Direct genome sequencing of cell culture derived S52/JFH1 viruses identified putative adaptive mutations in Core, E2, p7, NS3, and NS5A clonal analysis revealed that all genomes analyzed exhibited different combinations of these mutations. Finally, viruses resulting from transfection with RNA transcripts of five S52/JFH1 recombinants containing these combinations of putative adaptive mutations performed as efficiently as J6/JFH viruses in Huh7.5 cells and were all genetically stable after viral passage.