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肺癌组织中miRNA-34a表达对肺癌细胞系A549增殖和迁移的影响 被引量:4

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摘要 目的探讨肺癌组织中微小RNA(miR)-34a的表达情况及其对肺癌细胞系A549增殖和迁移的影响。方法 RT-PCR方法检测miR-34a在肺癌组织和肺癌细胞系A549中的表达情况。克隆形成实验检测miR-34a对肺癌细胞系A549增殖能力的影响;划痕实验检测miR-34a对肺癌细胞系A549迁移能力的影响。Target Scans软件预测miR-34a可能的靶基因,并采用荧光素酶报告基因实验验证预测的靶基因。Western印迹方法检测miR-34a对预测靶基因表达的影响。结果 miR-34a在肺癌组织和肺癌细胞系A549中的表达较正常组织显著降低(P<0.01)。转染miR-34a可显著抑制A549细胞的增殖和迁移能力(P<0.01),而转染miR-34a抑制剂可增加A549细胞的增殖和迁移能力(P<0.01)。Target Scans软件预测miR-34a可能的靶基因为B淋巴细胞瘤-2基因(Bcl-2),且得到荧光素报告实验结果证实。Western印迹结果显示转染miR-34a可显著抑制A549细胞中Bcl-2的表达(P<0.01),而转染miR-34a抑制剂可增加A549细胞中Bcl-2的表达(P<0.01)。结论 miR-34a可通过调节Bcl-2的表达而发挥肺癌抑制作用。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2015年第22期6446-6448,共3页 Chinese Journal of Gerontology
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共引文献4

同被引文献48

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