基础医学与临床 ›› 2019, Vol. 39 ›› Issue (5): 641-645.

• 研究论文 • 上一篇    下一篇

腺瘤样结肠息肉基因在人肝癌细胞系BEL-7402脂肪代谢过程中对线粒体的影响

刘静,林国南   

  1. 首都医科大学基础医学院
  • 收稿日期:2018-11-14 修回日期:2019-02-20 出版日期:2019-05-05 发布日期:2019-04-24
  • 通讯作者: 林国南 E-mail:linguonan@ccmu.edu.cn
  • 基金资助:
    国家自然科学基金

Effect of adenomatous polyposis coli on mitochondria during fat metabolism in human hepatoma cell line BEL-7402

  • Received:2018-11-14 Revised:2019-02-20 Online:2019-05-05 Published:2019-04-24
  • Supported by:
    National Natural Science Foundation

摘要: 目的 观察在人肝癌细胞系脂肪代谢过程中,腺瘤样结肠息肉基因(APC)对细胞线粒体的影响。方法:给人肝癌细胞(BEL-7402)细胞转染APC基因敲减质粒,并用油酸(oleic acid,OA)刺激各组细胞,使细胞产生脂质堆积。油红O染色法检测各组细胞脂质堆积情况;使用ATP含量检测试剂盒检测各组细胞ATP含量;使用荧光探针标记法检测各组细胞内氧自由基(ROS)的含量 。结果:给细胞转染质粒后,APC基因的mRNA表达量降低(P<0.05),蛋白表达也降低(P<0.05);与对照组细胞相比,APC基因敲减组细胞加油酸刺激后细胞脂质堆积减少(P<0.05),ATP含量增高(P<0.05),细胞内氧自由基数量降低(P<0.01)。结论:APC在人肝癌细胞系脂质代谢过程中影响线粒体的生理功能。

关键词: 关键词:脂肪肝细胞, APC, 线粒体

Abstract: Objective To observe the effect of adenomatous polyposis coli (APC) on cell mitochondria in the process of fat metabolism in human hepatoma cell lines. Methods Human hepatoma cells (BEL-7402) cells were transfected with APC gene knockdown plasmid, and oleic acid (OA) was used to stimulate knockdown cells and control cells to produce lipid accumulation. Oil red O staining was used to detect the lipid accumulation in each group. ATP content detection kit was used to detect the ATP content of each group. The content of oxygen free radicals (ROS) in each group was detected by fluorescent probe labeling. Results After transfection of the plasmid, the mRNA expression of APC gene decreased (P<0.05) and protein expression decreased (P<0.05). Reduced cell lipid accumulation after stimulation with oleic acid in APC knockdown group compared with control cells (P<0.05), ATP content increased (P<0.05), and the number of intracellular oxygen free radicals decreased (P<0.01). Conclusions APC affects the physiological function of mitochondria during lipid metabolism in human hepatoma cell lines.

Key words: Key words: fatty liver cells, APC, mitochondria