食品科学 ›› 2018, Vol. 39 ›› Issue (17): 140-144.doi: 10.7506/spkx1002-6630-201817023

• 营养卫生 • 上一篇    下一篇

蒲公英萜醇对人乳腺癌细胞MCF-7增殖及凋亡的影响

朱 坤1,丁米娜1,杨 洋2,车拴龙2,陈丽艳1,*   

  1. 1.延边大学医学院生物化学与分子生物学教研室,吉林 延吉 133002;2.延边大学医学院病理学教研室,吉林 延吉 133002
  • 出版日期:2018-09-15 发布日期:2018-09-18
  • 基金资助:
    国家自然科学基金地区科学基金项目(81460399)

Effect of Taraxerol on the Proliferation and Apoptosis of MCF-7 Human Breast Cancer Cells

ZHU Kun1, DING Mina1, YANG Yang2, CHE Shuanlong2, CHEN Liyan1,*   

  1. 1. Department of Biochemistry and Molecular Biology, Medical College, Yanbian University, Yanji 133002, China; 2. Department of Pathology, Medical College, Yanbian University, Yanji 133002, China
  • Online:2018-09-15 Published:2018-09-18

摘要: 目的:探讨蒲公英萜醇对人乳腺癌细胞MCF-7增殖、凋亡的影响及其可能的分子机制。方法:体外培养人 乳腺癌细胞MCF-7,采用噻唑蓝比色法和平板克隆实验检测蒲公英萜醇对MCF-7细胞增殖的影响;Hoechst 33342荧 光染色法检测细胞凋亡的形态变化;Western blot法检测凋亡相关蛋白的表达。结果:蒲公英萜醇对人乳腺癌细胞 MCF-7有明显的增殖抑制作用(P<0.05);Hoechst染色结果显示,给药后细胞核内染色质凝集,核固缩,可见凋 亡小体;Western blot结果显示,蒲公英萜醇可极显著提高Bax/Bcl-2的比值(P<0.01)以及上调活化型Caspase-3/9 的表达(P<0.01),下调PARP的表达(P<0.01)。结论:蒲公英萜醇能够明显抑制人乳腺癌细胞MCF-7增殖, 并通过线粒体途径诱导其凋亡。

关键词: 乳腺癌, 蒲公英萜醇, 凋亡, 线粒体途径

Abstract: Objective: To investigate the effect of taraxerol on the proliferation and apoptosis of breast cancer MCF-7 cells and to explore its possible mechanism of action. Methods: The effect of taraxerol on the proliferation of MCF-7 cells was detected by methylthiazolyldiphenyltetrazolium bromide assay and colony formation assay; cell apoptosis was tested by Hoechst 33342 fluorescence staining, and apoptosis-related protein expression was detected by Western blot. Results: Taraxerol significantly inhibited the proliferation of MCF-7 cells (P < 0.05). Hoechst staining revealed a series of morphological changes in MCF-7 cells associated with apoptosis, and Western blot data indicated that taraxerol significantly increased the ratio of Bax/Bcl-2 (P < 0.01) and up-regulated cleaved caspase-3/9 expression (P < 0.01), and down-regulated PARP expression (P < 0.01). Conclusion: Taraxerol can inhibit the proliferation, and induce the apoptosis of MCF-7 cells via the mitochondrial signaling pathway.

Key words: breast cancer, taraxerol, apoptosis, mitochondrial pathway

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