Title: The effect of 5-Aza-CdR on TIMP-3 gene in hepatocellular carcinoma cells
Abstract:Objective The aim of this study is to investigate the CpG island methylation status of TIMP- 3 in HCC cell lines, to treate the HCC cells that exhibit positive methylation with DNA methyltransferase i...Objective The aim of this study is to investigate the CpG island methylation status of TIMP- 3 in HCC cell lines, to treate the HCC cells that exhibit positive methylation with DNA methyltransferase in- hibitor(5-Aza-CdR), and to observe the influence of 5-Aza-CdR on the expression of TIMP-3 mRNA and its CpG island methylation degree. Methods TIMP-3 CpG methylation status of HCC cells were examined using MSP assay. Methylation-positive HCC cells were treated with DNA methyltransferase inhibitor(5-Aza- CdR)(intervention group), and the difference of TIMP-3 mRNA expression was observed between interven- tion group and control group. Pyrosequencing method was applied to quantitatively examine the CpG island methylation percentage. Results The methylation of TIMP-3 CpG islands in C3A, HepG-2, and Hep-3B was positive. The results showed that TIMP-3 mRNA expression was increased(P 0.05) and the methylation level was decreased(P 0.05) in the intervention group compared to control group. Conclusion 5-Aza-CdR could remarkably reduce the level of the CpG island methylation and increase the expression of TIMP-3 mR- NA in HCC cells.Read More
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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