[关键词]
[摘要]
目的 研究血三七Polygonum amplexicaule var. sinense醋酸乙酯提取物(EAEP)对人肺癌A549和H1299细胞凋亡的影响及其机制。方法 通过CCK-8细胞增殖检测试剂盒及流式细胞术检测EAEP对A549和H1299细胞增殖、细胞周期及凋亡的影响;通过实时荧光定量PCR(qRT-PCR)及Western blotting法检测EAEP对A549和H1299细胞凋亡相关因子Bax、Bcl-2和Caspase-3 mRNA及蛋白表达的影响。结果 EAEP能显著促进A549和H1299细胞凋亡;显著提高促凋亡因子Bax、Caspase-3 mRNA表达水平,降低抗凋亡因子Bcl-2 mRNA的表达水平;显著提高Bax蛋白表达水平,降低Bcl-2蛋白表达水平。结论 EAEP能通过促进Bax的表达和抑制Bcl-2的表达诱导肺癌细胞凋亡。
[Key word]
[Abstract]
Objective To study the influence of ethyl-acetate extract of Polygonum amplexicaule var. sinense (EAEP) on lung cancer cellular proliferation and apoptosis and the underlying mechanisms. Methods The cell growth of A549 and H1299 cells was measured by cell counting kit-8 experiment and apoptosis was analyzed by flow cytometry. The treated cellular total mRNAs and proteins related to the apoptosis of A549 and H1299 cells were extracted, and then used for qRT-PCR and Western blotting experiments. Results The apoptosis rate of A549 and H1299 cells was observed to be markedly promoted by EAEP, and flow cytometry statistics suggested that this effect may mainly be produced by its pro-apoptotic procedures. qRT-qPCR and Western blotting assays also proved that EAEP significantly promoted expression of Bax and Caspase-3, and inhibited expression of Bcl-2. Conclusion EAEP may contain components that play a role in regulating cellular growth via influencing Bax and Bcl-2 pathway.
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[基金项目]
国家自然科学基金资助项目(31371307);湖北重点实验室建设基金资助项目(2018BFC360)