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雌二醇及雌激素受体抑制剂对卵巢癌SKOV3细胞凋亡及其PTEN、GSK3β、cyclinD1蛋白表达的影响 被引量:1

Effect of E_2 and ICI182,780 on the Apoptosis and Expressions of PTEN,GSK3β and CyclinD1 in SKOV3 Cells
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摘要 目的:探讨雌二醇(E2)与雌激素受体抑制剂ICI182,780作用后,对卵巢癌SKOV3细胞凋亡及磷脂酰肌醇/蛋白激酶B(PI3K/AKT)信号通路上蛋白表达的影响,明确E2及其受体抑制剂对SKOV3细胞作用的机制。方法:采用流式细胞技术检测普通培养液(对照组)、浓度为10-7mol/L的E2(E2组)和相同浓度E2与ICI182,780(E2+ICI182,780组)作用SKOV3细胞后不同时间段(24、48小时)SKOV3细胞凋亡率的变化,Western-Blot法检测E2与ICI182,780作用SKOV3细胞后不同时间段(0、1、2、6、12、24小时)PI3K/AKT信号通路相关分子的蛋白表达。结果:①E2组作用SKOV3细胞24、48小时后SKOV3细胞凋亡率明显低于对照组(P<0.05);E2+ICI182,780组作用SKOV3细胞24、48小时后SKOV3细胞凋亡率明显高于对照组(P<0.05)。②E2上调SKOV3细胞人第10号染色体缺失的磷酸酶及张力蛋白同源基因(PTEN)、p-PTEN、磷酸化糖原合成酶激酶3β(p-GSK3β)、细胞周期素D1(cyclinD1)蛋白表达;ICI182,780在不同程度上拮抗以上的作用,但是二者对GSK3β蛋白表达均无影响。结论:E2激活SKOV3细胞内的PI3K/AKT信号传导通路,促使通路上蛋白磷酸化,最终抑制细胞凋亡;雌激素受体抑制剂ICI182,780可抑制E2对PI3K/AKT信号传导通路的激活作用,从而促进细胞凋亡。 Objective :To investigate the effects of estradiol and anti-estrogen ICI182,780 on the PTEN, GSK3β and cyclinD1 expressions and phosphorylation of PI3K/AKT signal pathway in human epithelial ovari- an cancer SKOV3 cells. Methods:After interfered by E2 and E2 + ICI182,780 ,the expressions of proteins inSKOV3 cell were analyzed by Western-Blot, and observed by immunity fluorescence microscope. Results:①After 24h and 48h treatment of E2,the apoptosis rates were lower than those in control group( P 〈0. 05). Af- ter 24h and 48h treatment of E2 + ICI182,780,the apoptosis rates were higher than those in control group (P 〈 0. 05). ② E2 increased the expression of PTEN, p-PTEN, p-GSK3β and cyclinD1 while ICI182,780 counteract the effect of E2 on the expression of the protein before, neither E2 nor ICI182,780 have effect on the expression of GSK3β. Conclusions: The PI3K/AKT pathway could be activated by E2 in SKOV3 cells, while ICI182,780 counteract this effect.
作者 徐磊 石红
出处 《实用妇产科杂志》 CAS CSCD 北大核心 2012年第11期932-936,共5页 Journal of Practical Obstetrics and Gynecology
关键词 雌二醇 卵巢癌 雌激素受体抑制剂ICI182 780 细胞凋亡 人第10号染色体缺失的 磷酸酶及张力蛋白同源基因 糖原合成酶激酶3Β 细胞周期素D1 17β-estradiol Ovarian cancer Anti-estrogen ICI182,780 Apoptosis Phosphatase and ten-sin homolog deleted on chromosome ten Glycogen synthase kinase-3 CyclinD1
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