基础医学与临床 ›› 2016, Vol. 36 ›› Issue (3): 353-357.

• 研究论文 • 上一篇    下一篇

Artemis对人肝癌细胞系BEL-7402/5FU DNA损伤的影响

张雪1,李大玉2,祝小波2,范芳3,刘云2,李长福1   

  1. 1. 遵义医学院
    2. 遵义医学院生化教研室
    3. 遵义医学院生物化学教研室
  • 收稿日期:2015-09-07 修回日期:2015-10-28 出版日期:2016-03-05 发布日期:2016-02-22
  • 通讯作者: 李长福 E-mail:974557593@qq.com
  • 基金资助:
    贵州省社发攻关项目

Effects of Artemis on DNA damage of human hepatic carcinoma cell line BEL-7402/5FU

  • Received:2015-09-07 Revised:2015-10-28 Online:2016-03-05 Published:2016-02-22

摘要: 目的 探讨转染shArtemis干扰质粒对人肝癌细胞BEL-7402/5FU DNA损伤的影响。方法 将人肝癌细胞分为正常对照组、脂质体对照组、空质粒对照组和转染shArtemis干扰质粒实验组(shArtemis实验组); 建立DNA损伤模型,分别用0.625、1.25、2.5、5.0和10.0μg/mL的丝裂霉素C作用BEL-7402/5FU细胞24 和48h,MTT法检测细胞活性,Western-blot观察磷酸化组蛋白H2AX(γ-H2AX)的表达;转染Artemis干扰质粒,检测Artemis、γ-H2AX表达;彗星实验检测DNA的损伤。结果 0.625、1.25、2.5、5.0和10.0μg/mL的丝裂霉素C作用48h后肝癌细胞活力明显下降(p<0.05);丝裂霉素C刺激细胞48h后γ-H2AX的表达量随着药物浓度的增加而增加;转染shArtemis干扰质粒后,γ-H2AX的表达量较正常对照组增加(p<0.05);shArtemis实验组较正常对照组拖尾DNA量增加(p<0.05)。结论 丝裂霉素C能够诱导肝癌细胞损伤;转染shArtemis干扰质粒促进丝裂霉素C诱导的人肝癌细胞BEL-7402/5FU DNA损伤。

关键词: Artemis, 人肝癌细胞BEL-7402/5FU, 丝裂霉素C, DNA损伤

Abstract: Objective To explore the cellular effects of shArtemis on DNA damage of human hepatic carcinoma cell line BEL-7402/5FU in vitro.Methods The experiment were divided into control group,Lipofectamine2000 group,contol plasmid group, shArtemis group;Human hepatic carcinoma cell line BEL-7402/5FU were treated with 0.625,1.25,2.5.5.0 and 10.0μg/mL mitomycin C for 24 and 48 huors.BEL-7402/5FU cell activity examined by MTT and observed the expression of phosphorylated histone2AX (γ-H2AX ) by Western blot.After 48h transfected shArtemis interference plasmid , Western blot detected the quantity of Artemis and γ-H2AX ;Commet assy detect the exent of DNA damage.Result The Determined by MTT show that after 48 h respectively treated within 0.625, 1.25, 2.5, 5.0 and 10.0 μg/mL Mitomycin C, cell activity of liver cancer happen to have significantly decreased.In addition, after 48h by incubating with Mitomycin C,the expression of γ-H2AX increased in a dose-dependent manner;The the expression of γ-H2AX increased following inhibitated Artemis. Moreover the tailing DNA of shArtemis experimental group increased than in the control group.Conclusion mitomycin C can induced DNA damage in human hepatic carcinoma cell line BEL-7402/5FU; shArtemis prmotes DNA damage which induced by mitomycin C.

Key words: Artemis, Human hepatic carcinoma cell line BEL-7402/5FU, Mitomycin C , DNA damage