基础医学与临床 ›› 2016, Vol. 36 ›› Issue (3): 307-310.

• 研究论文 • 上一篇    下一篇

5-杂氮-2′脱氧胞苷对肝癌细胞SMMC-7721 miR-1247-5p基因表达及其启动子区甲基化的影响

郭文伟1,徐广贤1,段相国1,赵瑾1,杨丽1,张议心1,魏军2   

  1. 1. 宁夏医科大学
    2. 宁夏医科大学总医院
  • 收稿日期:2015-06-23 修回日期:2015-11-26 出版日期:2016-03-05 发布日期:2016-02-22
  • 通讯作者: 魏军 E-mail:lydiajunwei@hotmail.com
  • 基金资助:
    从构筑转录因子HMGA2在胃癌中的调控网络探讨上皮间质转化和肿瘤细胞干性获取之间的关系;宁夏高等学校科学技术研究项目重点项目;宁夏科技支撑计划项目

Effect of 5-Aza-CdR on miR-1247-5p expression and its gene methylation degree in promoter region in hepatocellular carcinoma cell line SMMC-7721

  • Received:2015-06-23 Revised:2015-11-26 Online:2016-03-05 Published:2016-02-22

摘要: 目的 观察正常人肝细胞系L-O2和肝癌细胞系SMMC-7721中miR-1247-5p的表达,研究去甲基化药物5-杂氮-2′脱氧胞苷(5-Aza-CdR)对肝癌细胞系SMMC-7721中miR-1247-5p表达及其基因启动子区CpG 岛甲基化水平的影响。方法 用不同浓度(0、5和10 μmol/L)去甲基化药物5-杂氮-2′脱氧胞苷处理SMMC-7721细胞,用甲基化特异性PCR法检测miR-1247-5p基因启动子区甲基化水平;用SYBR Green qReal Time PCR 法检测miR-1247-5p的表达。结果 与正常人肝细胞系L-O2相比,肝癌细胞系SMMC-7721中miR-1247-5p表达降低(P < 0.05)且其基因启动子区CpG 岛甲基化水平高;经去甲基化药物干预后miR-1247-5p的表达较对照组有明显上调(P < 0.01),且其基因启动子区CpG 岛甲基化水平降低。结论 miR-1247-5p基因甲基化调控可能参与了肝癌的发生。

关键词: 关键词:肝癌细胞, miR-1247-5p, 甲基化, 5-杂氮-2′脱氧胞苷

Abstract: Objective To investigate the different expression of miR-1247-5p and its CpG island methylation on gene promoter region between normal human liver cell line L-O2 and hepatocellular carcinoma cell line SMMC-7721 by the intervention of different concentration of 5-Aza-CdR. Methods Normal human liver cell line L-O2 and hepatocellular carcinoma cell line SMMC-7721 were treated with different concentrations of 5-Aza-CdR(0, 5 and 10 μmol/L), and then to exam the methylation of miR-1247-5p gene promoter region of SMMC-7721 cell line by methylation-specific PCR (methylation specific polymerase chain reaction, MSP), finally, to detect the expression of miR-1247-5p by SYBR Green qReal Time PCR. Results Compared with normal human liver cell line L-O2, the expression of miR-1247-5p in hepatic carcinoma cell line SMMC-7721 was decreased(P < 0.05) and the methylation of its gene CpG Island in promoter region was higher. The expression of miR-1247-5p was significantly raised compared with the control group (p < 0.01) and the methylation of miR-1247-5p gene CpG Island in promoter region was reduced after demethylation drug intervention. Conclusion The methylation of miR-1247-5p expression might be involved in the occurrence and development of hepatocellular carcinoma.

Key words: Key words: hepatocellular carcinoma, miR-1247-5p, methylation, 5-Aza-CdR

中图分类号: