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辅助生殖子代胎盘PEG10基因表达及其甲基化情况 被引量:3

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摘要 目的 探讨辅助生殖子代胎盘中印记基因PEG10的表达及启动子区甲基化状态,并分析两者的关系. 方法 运用实时荧光定量聚合酶链反应(polymerase chain reaction,PCR)技术、免疫组织化学、蛋白质印迹法及甲基化特异性PCR技术检测2010年12月至2012年5月在郑州大学第三附属医院行剖宫产分娩的30例通过辅助生殖技术(assisted reproductive technology,ART)妊娠(ART组)和30例行剖宫产分娩的自然妊娠子代(对照组)胎盘中PEG10的表达及其启动子区甲基化状态,并分析两者的关系.采用两独立样本t检验、x^2检验和2×2配对资料的关联性分析方法对数据进行统计学分析. 结果 ART组PEG10 mRNA的相对表达量高于对照组(0.99±0.51与0.70±0.44),差异有统计学意义(t=2.504,P=0.015).ART组PEG10蛋白质表达阳性率和表达水平均高于对照组[分别为66.7%(20/30)与25.0%(12/30),x^2=4.286;0.70±0.08与0.33±0.04,t=3.646],差异有统计学意义(P值均<0.05).ART组甲基化阳性率低于对照组[分别为30.0%(9/30)与56.7%(17/30)],差异有统计学意义(x^2=4.344,P=0.037).ART组甲基化部分的PEG10相对表达量低于非甲基化部分(0.66±0.31与1.14±0.44,t=2.947,P=0.006).PEG10甲基化状态与表达相关(r=0.420,P=0.035). 结论 ART子代胎盘中PEG10表达上调,可能导致ART孕妇发生子痫前期和胎儿生长受限及其子代发生低出生体重儿的风险增加.PEG10表达与其甲基化状态有负相关倾向,启动子区甲基化可能是其表达调节方式之一.
出处 《中华围产医学杂志》 CAS CSCD 2015年第5期375-377,共3页 Chinese Journal of Perinatal Medicine
基金 河南省教委资助项目(2010A320036)
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参考文献11

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