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- Title
Two-dimensional differential gel electrophoresis/analysis of diethylnitrosamine induced rat hepatocellular carcinoma.
- Authors
Qi, Yanting; Chen, Xiaona; Chan, Chu-yan; Li, Dan; Yuan, Chonggang; Yu, Fei; Lin, Marie C.; Yew, David T.; Kung, Hsiang-Fu; Lai, Lihui
- Abstract
Diethylnitrosamine (DEN) is a known carcinogen that can alkylate DNA molecules. In rats, DEN-induced hepatocellular carcinoma (HCC) model is well established. In this study, we used a two-dimensional differential gel electrophoresis (2D-DIGE) system and liquid chromatography/mass spectrometry/mass spectrometry to identify the differential expression protein profiles between the DEN-induced HCC and healthy liver cells. Western blotting and semiquantitative RT-PCR were used to further confirm the results. Seventeen differentially expressed spots were identified in DEN-induced HCC cells. Among all, the most prominent upregulated proteins include the members of the glutathione S-transferase super family, aldo-keto reductase superfamily and proteins involved in the response to oxidative stress. Downregulation was observed in 2 proteins that were known to contribute to hepatic dysfunction. This study provides the first comprehensive protein profiling of the DEN-induced HCC in rats. This model simulates the differential protein expression of human HCC and may be useful for further understanding the mechanism of HCC tumorigenesis. © 2008 Wiley-Liss, Inc.
- Publication
International Journal of Cancer, 2008, Vol 122, Issue 12, p2682
- ISSN
0020-7136
- Publication type
Article
- DOI
10.1002/ijc.23464