Integration of hepadnavirus DNA in infected liver: Evidence for a linear precursor

被引:105
作者
Yang, WG [1 ]
Summers, J [1 ]
机构
[1] Univ New Mexico, Dept Mol Genet & Microbiol, Albuquerque, NM 87131 USA
关键词
D O I
10.1128/JVI.73.12.9710-9717.1999
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
DNA of the avian hepadnavirus, duck hepatitis B virus, was found to be integrated at low abundance into the cellular DNA extracted from the livers of infected ducklings. The frequency of integration was estimated to be at least one viral genome per 10(3) to 10(4) cells by 6 days postinfection. The structures of virus-cell junctions determined by sequencing were compared with those of virus-virus junctions formed by nonhomologous recombination between the ends of linear viral DNA forms. This comparison allowed us to conclude that linear viral DNA was the preferential form used as an integration substrate. Potential factors promoting viral DNA integration during chronic infection are discussed.
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收藏
页码:9710 / 9717
页数:8
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