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脑胶质瘤中miR-21以及EGFR信号通路异常表达的相关性研究

Chinese Journal of Neurosurgery(2010)

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Abstract
目的 探讨不同病理级别国人脑胶质瘤中miR-21表达;miR-21编码基因扩增与突变;miR-21与EGFR信号通路关键成员表达关系.方法 荧光实时定量PCR法和荧光原位杂交法测定不同病理级别人脑胶质瘤标本中miR-21表达;半定量PCR法检测miR-21编码基因拷贝数并测序PCR产物;免疫组织化学染色法检测胶质瘤标本EGFR、pAKT和PTEN表达水平.结果 荧光实时定量PCR与荧光原位杂交miR-21表达随着胶质瘤病理级别的升高而增加(F=35.516;P=0.000);不同病理级别中人脑胶质瘤中miR-21编码基因拷贝数差异无统计学意义(F=1.219;P=0.305);miR-21表达与EGFR(rs=0.710,P=0.000)、pAKT(rs=0.638,P=0.000)表达呈正相关,与PTEN表达呈负相关(rs=-0.286,P=0.027).结论 miR-21在国人脑胶质瘤中过表达且与EGFR信号通路关键成员表达相关.
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Key words
miR - 21,Human glioblastoma,Gene amplification,Gene mutation,EGFR- AKT signaling transduction pathway
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