Novel hepatitis B virus infection mouse model using herpes simplex virus type 1 thymidine kinase transgenic mice.

Journal of Gastroenterology and Hepatology
Ayumu KanbeHiroyasu Ito

Abstract

The chronicity of hepatitis B virus (HBV) infection is the result of impaired HBV-specific immune responses that cannot eliminate or cure the infected hepatocytes efficiently. Previous studies have used immunodeficient mice such as herpes simplex virus type 1 thymidine kinase NOD/Scid/IL2Rrnull (HSV-TK-NOG) mice. However, it is difficult to analyze the immune response in the previous models. In the present study, we established a novel HBV infection model using herpes simplex virus type 1 thymidine kinase (HSV-TK) mice in which the host immune system was not impaired. Herpes simplex virus type 1 thymidine kinase mice were injected intraperitoneally with ganciclovir (GCV). Seven days after GCV injection, GCV-treated mice were transplanted with 1 × 106 hepatocytes from HBV-transgenic (HBV-Tg) mice. Serum alanine aminotransferase levels in HSV-TK mice increased 1 and 2 weeks after GCV injection. The number and viability of hepatocytes from the whole liver of HBV-Tg mice significantly increased using digestion medium containing liberase. Hepatitis B surface antigen (HBsAg)-positive areas in the liver tissue were observed for at least 20 weeks after HBsAg-positive hepatocyte transplantation. In addition, we measured HBsAg in the ser...Continue Reading

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Citations

Aug 8, 2021·Cells·Niloofar Khoshdel-RadMassoud Vosough

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