Construction of an infectious cDNA clone of hepatitis E virus strain JE03-1760F that can propagate efficiently in cultured cells.

作者: Kentaro Yamada , Masaharu Takahashi , Yu Hoshino , Hideyuki Takahashi , Koji Ichiyama

DOI: 10.1099/VIR.0.007559-0

关键词:

摘要: A full-length infectious cDNA clone (pJE03-1760F/wt) of a genotype 3 hepatitis E virus (HEV) (strain JE03-1760F) obtained from faecal specimen was constructed in this study. Upon transfection the capped vitro transcripts pJE03-1760F/wt into PLC/PRF/5 cells, viral RNA levels culture supernatant started to increase on day 6 post-transfection (p.t.) and reached 107 copies ml−1 28 p.t. Detection increasing numbers cells with ORF2 protein expression by immunofluorescence assay at 5, 7, 11 15 days indicated spread HEV infection cell culture. When cDNA-derived inoculated or A549 it grew as efficiently faeces-derived both reaching 106 copies ml−1 30 days post-inoculation. Our reverse genetics system for that is usable robust cell-culture will be useful elucidation mechanism replication functional roles proteins.

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