alexa Mouse models to study the interaction of risk factors for human liver cancer.
Molecular Biology

Molecular Biology

Journal of Cytology & Histology

Author(s): Sell S

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Abstract Each of the risk factors for human liver cancer (aflatoxin exposure, hepatitis B virus-associated liver injury, p53 loss, p53ser249 mutation, and male sex) also increases the incidence of hepatocellular carcinoma (HCC) in mouse models of hepatocarcinogenesis. Neonatal mice, partially hepatectomized adult mice, and p53-deficient mice each have a higher hepatocyte proliferation rate, are less able to detoxify AFB1, and form more DNA adducts than do normal wild-type controls. However, transgenic hepatitis B surface antigen mice, expressing hepatitis B surface antigen under control of the albumin promoter (alb/psx), are able to detoxify AFB1 at the same level as do wild-type mice. Thus, AFB1-induced HCC development in neonatal mice and p53+/- mice may be due to "immature" carcinogen metabolism, whereas increased HCC in transgenic hepatitis B virus mice may be due to promotion effects of increased proliferation. Future studies will explore the effects of modifying factors on the development of HCC.
This article was published in Cancer Res and referenced in Journal of Cytology & Histology

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