miR-133b、Bcl-w在老年食管鳞癌中表达及相关机制

被引:0
|
作者
张帅
葛晓晴
张进
侯露
杨鲲鹏
机构
[1] 郑州大学第二附属医院胸外科
关键词
miR-133b; B细胞淋巴瘤(Bcl)-w; 食管鳞状细胞癌;
D O I
暂无
中图分类号
R735.1 [食管肿瘤];
学科分类号
摘要
目的 探讨microRNA(miR)-133b、B细胞淋巴瘤(Bcl)-w在老年食管鳞状细胞癌中的表达及对食管鳞状细胞癌细胞的影响。方法 使用实时荧光定量聚合酶链反应(qRT-PCR)检测30例老年患者食管鳞状细胞癌组织及其对应癌旁组织中miR-133b及Bcl-w mRNA表达。将miR-133b mimics及阴性对照转染至食管鳞状细胞癌ECA109细胞株,检测转染效率。检测转染后ECA109细胞的增殖和凋亡情况,使用TargetScan和miRDB软件预测miR-133b的靶基因,并通过双荧光素酶报告实验方法验证,Western印迹检测靶基因Bcl-w蛋白表达。结果 食管鳞状细胞癌中miR-133b mRNA表达量明显低于癌旁组织(P<0.001),而食管鳞状细胞癌中Bcl-w蛋白表达量明显高于癌旁组织(P<0.001),miR-133b与Bcl-w表达呈负相关(r=-0.792,P<0.01)。miR-133b mimics转染能明显上调ECA109细胞中的miR-133b水平,并明显降低其增殖能力,明显促进其凋亡(P<0.001)。miR-133b与Bcl-w存在靶向调控关系,过表达miR-133b可明显下调Bcl-w蛋白表达水平(P<0.05)。结论 miR-133b可能通过靶向下调Bcl-w基因的表达抑制食管鳞状细胞癌细胞的增殖并促进其凋亡。
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页码:5064 / 5067
页数:4
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