Abstract
The liver is the primary site for replication of the hepadnavirus genome. We asked whether the posttranscriptional phase of the viral replication cycle would depend on hepatocyte-specific functions. For this purpose, we assayed a previously constructed chimera between sequences of the cytomegalovirus immediate-early promoter-enhancer region and woodchuck hepatitis virus (WHV) (C. Seeger and J. Maragos, J. Virol. 63:1907-1915, 1989) for its ability to direct the synthesis of infectious WHV in hepatoma cells and in murine and avian fibroblast cells. Viruslike particles containing WHV DNA were produced transiently in transfected hepatoma cells and in fibroblasts. Inoculation of woodchucks with culture medium from hepatoma cells or fibroblasts transfected with viral DNA led to productive WHV infection, as observed following infection of woodchucks with serum from WHV-infected animals. These results demonstrate that posttranscriptional events of the hepadnavirus replication cycle are not dependent on hepatocyte-specific functions.
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