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microRNA-146a基因多态性与胃癌的相关性分析 被引量:6

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摘要 目的分析microRNA-146a基因多态性(single nucleotide polymorphism,SNP)及miR-146a表达水平与胃癌的关系。方法纳入胃癌患者86例设为胃癌组,取胃癌及自身正常胃癌旁组织,另取正常胃黏膜42例作对照设为对照组。使用基因测序方法确定单核苷酸多态性的等位基因,分析不同基因型与胃癌发生及转移的关系。使用RT-PCR方法检测并比较不同基因型胃黏膜组织中miR-146a表达量;对比癌组织与自身正常组织中miR-146表达量;同时比较转移患者以及未转移患者癌组织miR-146表达量。结果胃癌组与对照组miR-146a基因型分布不同,Logistic回归显示GG及GC是胃癌发病危险因素;对照组中GG及GC基因型携带者miR-146a表达量较胃癌基因型携带者低;胃癌患者中癌组织miR-146a水平较其自身正常组织低。转移患者及未转移患者基因型分布亦有所不同,前者GG基因型比例较高,miR-146a表达量则降低,显示GG是胃癌转移的危险因素之一。结论 miR-146a多态性中的G等位基因是胃癌发病和转移的危险因素之一,可能与其导致的较低miR-146a表达量有关。
作者 马博 郑建忠
出处 《中国老年学杂志》 CAS CSCD 北大核心 2012年第15期3150-3152,共3页 Chinese Journal of Gerontology
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