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. 1987 May;84(9):2678–2682. doi: 10.1073/pnas.84.9.2678

Hepatitis B virus (HBV) particles are produced in a cell culture system by transient expression of transfected HBV DNA.

K Yaginuma, Y Shirakata, M Kobayashi, K Koike
PMCID: PMC304721  PMID: 3033659

Abstract

An in vitro system for the production of hepatitis B virus (HBV) particles was established by the transient expression of transfected HBV DNA using a human hepatocellular carcinoma cell, HuH-7, as a recipient. The 3.6- and 2.2-kilobase transcripts observed were similar to those in virus-infected liver cells. Both transcripts revealed the microheterogeneity of their 5' ends. The formation of virus-related particles subsequent to the RNA transcription was demonstrated. The core particles observed in the cytoplasm and the virus particles secreted in the culture medium contained the replicative intermediates of HBV DNA and banded at densities of 1.35-1.36 g/cm3 and 1.22-1.24 g/cm3, respectively. Furthermore, the in vitro mutagenesis of the template HBV DNA demonstrated that the P gene as well as the C gene products were essential for the production of HBV particles.

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