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Diethylnitrosamine- and partial hepatectomy-induced decrease in α2u-globulin mRNA level in the rat liver

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Abstract

Changes in gene expression in the rat liver were investigated by analyzing cDNA libraries for liver mRNAs from adult male rats injected with a chemical carcinogen diethylnitrosamine (DEN). Differential screening using normal and DEN-treated liver cDNAs as probes demonstrated that some of the mRNA species had noticeably lower abundance in the DEN-treated liver than in the untreated liver. Surprisingly, most of those clones were found to code for α2u-globulin (A2uG), an abundant protein in the male rat liver. Further analysis by in situ hybridization revealed that the decrease in the A2uG mRNA level occurred in the area where liver cells were proliferating due to DEN treatment and/or partial hepatectomy (PH). The findings indicate coincidence of cell proliferation with a decrease in the A2uG gene expression in the adult male rat liver, implying that the A2uG-related change favors chemical carcinogen-induced cell growth.

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Abbreviations

A2uG:

α2u-globulin

DEN:

diethylnitrosamine

PH:

partial hepatectomy

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Matuoka, K., Markus, I., Wong, A. et al. Diethylnitrosamine- and partial hepatectomy-induced decrease in α2u-globulin mRNA level in the rat liver. J Cancer Res Clin Oncol 119, 572–575 (1993). https://doi.org/10.1007/BF01372719

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  • DOI: https://doi.org/10.1007/BF01372719

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