Resistance to fulminant hepatitis and carcinogenesis conferred by overexpression of retinoblastoma protein in mouse liver.
Previously, retinoblastoma (Rb) transgenic mice were produced under the control of the Rb gene promoter and showed dwarf characteristics. Here, we created transgenic mice, in which the human Rb gene was controlled by the hepatocyte nuclear factor-1 gene promoter/enhancer and was expressed primarily in the liver. The liver of these novel transgenic mice was normally developed. Intriguingly, these mice showed resistance to fulminant hepatitis induced by anti-Fas antibody as well as resistance to chemical carcinogenesis in the liver. These results show that the Rb protein acts as an anti-apoptotic and anti-oncogenic agent in vivo. Our novel construct may be useful as a gene cassette in gene therapy for prevention of fulminant hepatitis and hepatoma.
Department of Biochemistry, Akita University School of Medicine, Japan.
T
T
Ichihara
Y
Y
Komagata
X L
XL
Yang
T
T
Uezato
K
K
Enomoto
K
K
Koyama
J
J
Miyazaki
T
T
Sugiyama
N
N
Miura
D000818:Animals; D017209:Apoptosis / Q000187:drug effects; D004198:Disease Susceptibility; D005260:Female; D006505:Hepatitis / Q000517:prevention & control*; D008099:Liver / Q000187:drug effects* / Q000502:physiology; D008113:Liver Neoplasms / Q000517:prevention & control*; D008297:Male; D051379:Mice; D008809:Mice, Inbred C3H; D008822:Mice, Transgenic / Q000235:genetics; D016160:Retinoblastoma Protein / Q000235:genetics / Q000494:pharmacology*
D016160:Retinoblastoma Protein