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-  2015 

USP22基因在人早孕期母-胎界面的表达及意义 Expression of USP22 Gene at Human Materno-Fetal Interface During Early Pregnancy

Keywords: USP22,母胎界面,绒毛,蜕膜,早孕,流产

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Abstract:

目的:检测早孕期绒毛及蜕膜组织中泛素特异性水解酶22(USP22)基因和蛋白水平表达,以探讨USP22在母-胎界面的生理性调节作用。方法:分别采用免疫组织化学方法、荧光实时定量PCR法、Western blot检测20例早孕期正常妊娠妇女及15例不明原因复发性流产患者绒毛、蜕膜组织中USP22的定位、mRNA及蛋白表达水平。结果:USP22在早孕期绒毛和蜕膜组织中均呈阳性表达。在蜕膜基质细胞,USP22主要定位于胞质,少部分定位于胞核;在绒毛滋养细胞,USP22主要表达于绒毛细胞滋养细胞的胞质和胞膜。实时荧光定量PCR及Western blot检测显示绒毛及蜕膜组织中均可见USP22mRNA及蛋白的表达;与正常妊娠组比较,复发性流产组绒毛USP22mRNA及蛋白表达水平显著降低(P<0.05),蜕膜组织中USP22mRNA及蛋白表达水平差异无统计学意义(P>0.05)。结论:USP22在人早孕期母-胎界面表达,并参与了正常早孕期绒毛滋养细胞侵袭的调控和正常妊娠的维持。母-胎界面USP22表达下降可能是导致自然流产发生的原因之一

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