天然产物研究与开发 ›› 2018, Vol. 30 ›› Issue (2): 169-175.doi: 10.16333/j.1001-6880.2018.2.001

• 研究论文 •    下一篇

木犀草素通过上调microRNA-34a-5p诱导肺癌细胞株H460凋亡的研究

姜泽群,李沐涵,马艳霞,覃月穆,张旭,吴勉华*   

  1. 南京中医药大学 江苏省中医药防治肿瘤协同创新中心,南京 210023
  • 出版日期:2018-02-28 发布日期:2018-02-28
  • 基金资助:

    国家自然科学基金(81603584);第59批中国博士后科学基金面上课题(2016M590485)

Luteolin Induces Apoptosis of Human Lung Cancer H460 Cells by Up-regulation of MicroRNA-34a-5p

JIANG Ze-qun,LI Mu-han,MA Yan-xia,QIN Yue-mu,ZHANG Xu,WU Mian-hua*   

  1. Nanjing University of Chinese Medicine,Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine (TCM) Prevention and Treatment of Tumor,Nanjing 210023,China
  • Online:2018-02-28 Published:2018-02-28

摘要: 探究木犀草素诱导人肺癌细胞株H460凋亡的分子机制,为其治疗肺癌提供新的科学依据。选取处于对数生长期的H460细胞株,并分为对照组和不同剂量的木犀草素组。采用CCK-8法检测木犀草素对H460细胞增殖的影响;流式细胞术检测细胞凋亡率;PCR array检测肺癌相关基因mRNA表达;Western-blot检测p53、p21、Bax、Bcl-2表达量变化;qRT-PCR 法检测microRNA-34a(miR-34a)的表达水平;本实验还检测了过表达miR-34a-5p后对H460细胞凋亡及凋亡相关蛋白表达的影响。结果显示,木犀草素能有效抑制人肺癌H460细胞的增殖,并促进其凋亡,其机制可能是通过激活p53信号通路,上调miR-34a-5p,最终影响凋亡相关蛋白Bax/Bcl-2 的表达来实现的。

关键词: 木犀草素, 肺癌, H460细胞凋亡, miR-34a-5p, p53

Abstract: To investigate the molecular mechanism for the induction of apoptosis by luteolin in human lung cancer H460 cells,and to provide a new scientific basis for its treatment of lung cancer.H460 cells in logarithm growth phase were selected and randomly divided into various groups:a blank control group and different concentrations of luteolin (LTL) groups.The cell viability was detected by CCK-8 assay,while the cell apoptosis was measured by flow cytometry analysis.The mRNA expression of lung cancer related genes in H460 cells were determined by PCR array.The protein levels of p53,p21,Bax and Bcl-2 were detected by Western blot.The expression levels of microRNA-34a (miR-34a) in H460 cells were assessed by qRT-PCR.Then,the miR-34a-5p was transfected into H460 cells,to observe its effects on cell apoptosis and related protein expression.The results showed that luteolin exhibited the anti-cancer effect in H460 cells through the induction of cell apoptosis and inhibition of cell proliferation,which may be mediated through the activation of the p53 signal pathway,up-regulation of miR-34a-5p,and subsequent regulation of apoptosis-related protein expression such as Bax/Bcl-2.

Key words: luteolin, lung cancer, H460 cell apoptosis, miR-34a-5p, p53

中图分类号: 

R93