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机构地区:[1]嘉兴市第一医院泌尿外科,314000 [2]上海市第一人民医院泌尿外科,200080
出 处:《中华实验外科杂志》2017年第7期1224-1226,共3页Chinese Journal of Experimental Surgery
基 金:嘉兴市科技计划项目(2015AY23010)
摘 要:目的研究磷酸肌醇3激酶(PI3K)/蛋白激酶B(Akt)信号通路在人类膀胱癌中的表达情况,并观察其与膀胱癌干细胞的关系,探讨PI3K/Akt信号通路住膀胱癌发生发展中的意义。方法采用反转录-聚合酶链反应(RT—PCR)和Western blot检测人膀胱癌中PI3K、磷酸化Akt(p-Akt)蛋白及mRNA的表达;采用免疫荧光双标技术检测膀胱癌干细胞标志物CD133存膀胱癌组织中的表达及其与p-Akt的共表达。结果在膀胱癌组织中,PI3K、p-Akt蛋白(PI3K:1.05±0.03,p-Akt:1.21±0.04)及PI3K mRNA(0.68±0.03)水平表达明显高于正常膀胱组织(PI3K蛋白:0.68±0.04,p-Ak蛋白:0.71±0.02,PI3K mRNA:0.42±0.02),膀胱癌下细胞标志物CD133在膀胱痛组织中有表达;p-Akt与CD133的共表达呈阳性。结论PI3K/Akt信号通路存膀胱癌组织中被激活,并且p-Akt与膀胱癌组织中膀胱癌干细胞标志物CD133存在共表达,推测通过干扰PI3K/Akt信号通路抑制膀胱癌干细胞异常分化可防治膀胱痛的发生发展。Objective To examine the expression of phosphatidylinositol 3 kinase (PI3K)/protein kinase B (Akt) signaling pathway in hladder cancer cells, and demonstrate relationship with cancer stein cells. Methods The expression of PI3K, phosphorylated protein kinase B ( p - Akt) in bladder cancer cells was detected by reverse transcription -polymeric chain reaetion( RT- PCR) and Western blotting. Double immunoflnorescence analysis was applied to detect the expression of CD133, the Co- expression of p - Akt and CD133. CD133 is one of surface marker of bladder cancer stem ceils. Results We detected a strong up - regulation of PI3K, p - Akt ( PI3K protein : 1.05 ± 0. 03, p - Akt protein : 1.21 ±0. 04, PI3K mRNA: 0. 68 ± 0. 03 ) in bladder cancer tissue samples compared to norlnal bladder tissues (PI3K protein: 0.68 ±0.04, p - Akt protein: 0. 71 ±0. 02, PI3K mRNA: 0. 42 ±0. 02) by Western blot and RT - PCR approaches. We also detected a strong Co - expression of p - Akt and CD133 in bladder cancer tissue sampies. Conclusion The expression of PI3K/Akt signaling pathway is up - regulation in bladder cancer tissues, and the expression of CD133 and p- Akt was co- expressed, suggesting that the activation and differentiation of bladder eaneer stem cells eould be inhibited by interference with PI3K/Akt signaling pathway to prevent the oecun'ence and development of bladder cancer.
关 键 词:膀胱癌 膀胱癌T细胞 磷酸肌醇3激酶/蛋白激酶B信号通路
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