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- W2089804938 abstract "Genotype 1a is a most prevalent genotype of hepatitis C virus in North America yet HCV replication has been studied predominantly with genotype 1b subgenomic replicons under neomycin selection in Huh-7 cells. Development of 1a-related dicistronic replicons under neo selection proved difficult and required either conditioned Huh-7 cells and/or chimeric genomes harboring pre-engineered adaptive mutations. We report the construction of a novel dicistronic genotype 1a(H77C) replicon expressing the puromycin N-acetyltransferase (PAC) gene as a selectable marker that, without prior introduction of adaptive mutations, allows establishment of puromycin-resistant Huh-7 colonies after transfection of naive Huh-7 cells. The large majority of HCV1a/PAC replicons did not reveal any adaptive mutations on short-term passage of Huh-7 cells. Continued passage led to mutations in the non-structural genes although these mutations did not significantly enhance replication of the original replicon. Transfection with total cellular RNA isolated from HCV1a/PAC replicon-containing cells led to a significant increase in colony-forming ability. The data identify PAC as an efficient selectable marker for studies of HCV replication, which may be useful with different genotypes in different host cell systems." @default.
- W2089804938 created "2016-06-24" @default.
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- W2089804938 date "2005-03-01" @default.
- W2089804938 modified "2023-10-18" @default.
- W2089804938 title "Replication of a novel subgenomic HCV genotype 1a replicon expressing a puromycin resistance gene in Huh-7 cells" @default.
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- W2089804938 doi "https://doi.org/10.1016/j.virol.2004.12.031" @default.
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