白头翁皂苷D介导AMPK/COX-2通路对食管癌细胞增殖、凋亡的影响

被引:11
作者
王凯 [1 ]
李伟伟 [1 ]
王佳 [2 ]
机构
[1] 延安大学附属医院胸外科
[2] 延安大学附属医院肿瘤科
关键词
白头翁皂苷D; 食管癌细胞; 增殖; 凋亡; 腺苷酸活化蛋白激酶/环氧合酶-2通路;
D O I
暂无
中图分类号
R285 [中药药理学];
学科分类号
100806 [中药药理学];
摘要
目的 探讨白头翁皂苷D调控腺苷酸活化蛋白激酶/环氧合酶-2(AMPK/COX-2)信号通路对人食管癌细胞EC9706增殖及凋亡的影响。方法 体外培养EC9706细胞,不同浓度梯度白头翁皂苷D处理后,MTT法检测EC9706细胞增殖,以筛选白头翁皂苷D的作用浓度。将EC9706细胞分为对照组,白头翁皂苷D(PSD)低、中、高剂量组(10、20、40μmol/L白头翁皂苷D),PSD高剂量+AMPK抑制剂(Compound C)组(40μmol/L白头翁皂苷D+10μmol/L Compound C),平板克隆形成实验检测EC9706细胞增殖;流式细胞术检测EC9706细胞凋亡;Western blot法检测EC9706细胞Bax、Bcl-2、p53、磷酸化AMPK(p-AMPK)、磷酸化乙酰辅酶A羧化酶(p-ACC)、COX-2蛋白表达水平。结果 与对照组比较,PSD低、中、高剂量组EC9706细胞克隆形成率、Bcl-2、COX-2蛋白表达水平显著降低,细胞凋亡率、Bax、p53、p-AMPKα、p-ACC蛋白表达水平显著升高,并呈浓度依赖性(P<0.05);与PSD高剂量组比较,PSD高剂量+Compound C组细胞克隆形成率、Bcl-2、COX-2蛋白表达水平显著升高(P<0.05),细胞凋亡率、Bax、p53、p-AMPKα、p-ACC蛋白表达水平显著降低(P<0.05)。结论 白头翁皂苷D通过激活AMPK途径抑制COX-2表达,进而抑制EC9706细胞增殖,促进细胞凋亡。
引用
收藏
页码:1943 / 1947
页数:5
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