盐酸埃克替尼对人非小细胞肺癌HCC827细胞凋亡及EGFR下游信号通路蛋白表达的影响

目的 探讨盐酸埃克替尼(Icotinib)对人非小细胞肺癌(NSCLC)HCC827细胞凋亡及EGFR下游信号通路蛋白表达的影响.方法 通过噻唑蓝比色(MTT)法检测Icotinib对HCC827细胞增殖的影响,流式细胞仪观察Icotinib对HCC827细胞凋亡的诱导作用,采用蛋白质免疫印迹(Western blot)检测表皮生长因子受体(EGFR)、蛋白激酶B(AKT)、胞外信号调节激酶(ERK)、p-EGFR、p-AKT、p-ERK和Survivin等EGFR下游信号通路蛋白的表达水平.结果 Icotinib抑制HCC827细胞增殖和诱导细胞凋亡的作用具有浓度依赖性和时间依赖性(P<0.05);随着Icotinib对HCC827细胞作用的药物浓度升高,p-EGFR、p-AKT、p-ERK和survivin等EGFR下游信号通路蛋白的表达水平均明显下调(P<0.05).结论 Icotinib可能通过抑制EGFR下游信号通路蛋白的表达,进而有效抑制HCC827细胞的增殖和诱导HCC827细胞的凋亡.

The influence of icotinib hydrochloride on apoptosis of non-small cell lung cancer cell-HCC827 and the protein expression levels of EGFR downstream signaling pathways in vitro

Objective To investigate the influence of icotinib hydrochloride on apoptosis of non-small cell lung cancer cell (NSCLC)-HCC827 and the protein expression levels of EGFR downstream signaling pathways in vitro.Methods The influence of icotinib hydrochloride on proliferation of HCC827 cell was detected by MTT,and the effects of icotinib-induced apoptosis of HCC827 cell were observed by flow cytometry,moreover, the expression levels of EGFR signaling pathways downstream proteins including epidermal growth factor receptor (EGFR),protein kinase B (AKT),extracellular signal regulating EGFR kinase (ERK),p-EGFR,p-AKT,p-ERK and Survivin were detected by Western Blot.Results The icotinib hydrochloride had inhibitory effects on HCC827 cell proliferation and could induce apoptosis of HCC827,with a concentration dependent and time dependence manner (P<0.05).With the increase of icotinib concentration,the expression levels of EGFR signaling pathways downstream protein including p-EGFR,p-AKT,p-ERK and Survivin were significantly down-regulated (P<0.05).Conclusion The icotinib hydrochloride can effectively inhibit HCC827 cell proliferation and induce apoptosis of HCC827 cells by inhibiting the expressions of EGFR signaling pathways downstream protein.