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J Virol. 1988 April; 62(4): 1408-1415

A chronic carrierlike state is established in nude mice injected with cloned hepatitis B virus DNA.

M A Feitelson, L J DeTolla and X D Zhou

Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111.

ABSTRACT

BALB/c nude mice were injected intrahepatically with hepatitis B virus (HBV) DNA prepared from recombinant plasmids. Hepatitis B surface antigen appeared in the circulation in 19 of 23 mice (82%) 3 to 20 weeks postinjection and persisted for more than 6 months in most animals. Hepatitis B e antigen appeared transiently in the circulation in 12 of the 23 mice (52%) within a few weeks after the appearance of hepatitis B surface antigen. Antibodies to the core, X, and/or polymerase gene products of HBV have also been observed in 14 (61%) of the mice. Histopathological examination of the livers at 7 months postinjection demonstrated that nearly half had characteristics consistent with chronic hepatitis. HBV DNA appeared to be integrated into host liver DNA. No evidence of viral replication was observed in sera or livers from these mice at 7 months postinjection. These results demonstrate that an HBV chronic carrierlike state can be established in mice and that such a model could be used to study host and virus factors important in the establishment and maintenance of HBV-associated chronic liver disease.

J Virol. 1988 April; 62(4): 1408-1415




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