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J. Virol., Jan 1995, 32-38, Vol 69, No. 1
BJ Yoo, MJ Selby, J Choe, BS Suh, SH Choi, JS Joh, GJ Nuovo, HS Lee, M Houghton and JH Han
T7 RNA polymerase transcripts of a putative full-length cDNA clone of
hepatitis C virus type 1 (HCV-1) were used to transfect a differentiated
human hepatoma cell line, Huh7. The transfected genome replicated in cells,
as evidenced by the appearance of progeny HCV RNA, detection of
negative-strand viral RNA, and incorporation of [3H]uridine into the viral
genome. Incubation of naive Huh7 cells with conditioned medium from
transfected cells resulted in a new HCV infection, suggesting the
production of biologically active virus in the inoculum. Maintenance of the
transfected cells under serum-free culture conditions resulted in the
selection of persistently infected cells which displayed a distinctive
cellular morphology. This is the first demonstration that HCV RNA produced
from cloned HCV cDNA is infectious and replication competent. This approach
should provide a valuable system for studying HCV replication, persistence,
and pathogenicity.
Copyright © 1995, American Society for Microbiology
Transfection of a differentiated human hepatoma cell line (Huh7) with in vitro-transcribed hepatitis C virus (HCV) RNA and establishment of a long-term culture persistently infected with HCV
Chiron Corporation, Emeryville, California 94608.
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