17β-雌二醇对子宫内膜癌细胞磷脂酰肌醇3激酶/蛋白激酶B信号传导通路的激活作用

被引:33
作者
郭瑞霞
魏丽惠
王建六
孙蓬明
孙秀丽
机构
[1] 北京大学人民医院妇科,北京大学人民医院妇科,北京大学人民医院妇科,北京大学人民医院妇科,北京大学人民医院妇科,,,,
关键词
子宫内膜肿瘤; 雌二醇; 1-磷脂酰肌醇3激酶; 原癌基因蛋白质类; 信号传导;
D O I
暂无
中图分类号
R737.33 [子宫肿瘤];
学科分类号
100214 ;
摘要
目的 探讨 17β 雌二醇 (E2 )对子宫内膜癌细胞系Ishikawa细胞磷脂酰肌醇 3激酶 /蛋白激酶B(PI 3K/PKB)信号传导通路的激活作用以及PI 3K抑制剂对其的影响。方法 应用免疫印迹杂交技术 ,检测一定浓度 (1× 10 -6mol/L) 17β E2 作用于Ishikawa细胞不同时间 (分别为 0、5、15、30、6 0、12 0min)后和不同浓度 (分别为 0、1× 10 -10 、1× 10 -8、1× 10 -6、1× 10 -4mol/L) 17β E2 作用Ishikawa细胞一定时间 (30min)后PKB的活化情况 [以磷酸化PKB和总PKB比值 (p PKB/PKB)表示 ],以及用同法检测PI 3K抑制剂LY2 94 0 0 2对 17β E2 活化PKB的影响。结果  1× 10 -6mol/L 17β E2 作用于Ishikawa细胞 15min时 ,PKB的活化水平 (0 5 33± 0 0 2 9)已明显高于对照 (0 36 1± 0 0 2 9,P <0 0 5 ) ,30min时最明显 (0 6 6 6± 0 0 2 1,P <0 0 0 1) ,而且持续至少达 12 0min时 ;随着 17β E2 浓度 (分别为 1× 10 -10 、1×10 -8、1× 10 -6、1× 10 -4mol/L)的增加 ,PKB的活化水平逐渐增高 ,与对照比较 ,差异有显著性 (除 1×10 -10 mol/L外 ,P值分别为 >0 0 5、<0 0 5、<0 0 5、<0 0 0 1)。随着LY2 94 0 0 2作用浓度 (分别为 0 1、10、5 0、10 0 μmol/L)的增加 ,17β E2 作用Ishikawa细胞后P
引用
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页码:40 / 44
页数:5
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