Enhanced HOXA10 sumoylation inhibits embryo implantation in women with recurrent implantation failure.

Enhanced HOXA10 sumoylation inhibits embryo implantation in women with recurrent implantation failure.
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增强的 HOXA10 sumoylation 会抑制反复植入失败的女性的胚胎植入。

DOI:
10.1038/cddiscovery.2017.57
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发表时间:
2017
影响因子:
7
通讯作者:
Sun H
Sun H
中科院分区:
医学2区
文献类型:
--
作者:
Jiang R;Ding L;Zhou J;Huang C;Zhang Q;Jiang Y;Liu J;Yan Q;Zhen X;Sun J;Yan G;Sun H

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HOXA 10已成为子宫内膜容受性的重要分子标志物。体外受精-胚胎移植(IVF-ET)治疗后复发性植入失败(RIF)与子宫内膜容受性受损有关,但这种现象的确切潜在机制仍然难以捉摸。我们发现HOXA 10在进化上保守的赖氨酸164残基处被小泛素样修饰物1(SUMO 1)修饰。SUMO化抑制HOXA 10蛋白的稳定性和转录活性,而不影响其亚细胞定位。SUMO 1修饰的HOXA 10表达在雌二醇和孕酮处理的石川细胞中降低。SUMO化抑制HOXA 10在BeWo球体和小鼠胚胎附着到石川细胞中的促进作用。重要的是,与对照生育妇女相比,在RIF妇女的分泌中期卵泡中检测到异常高的SUMO 1-HOXA 10表达。总之,我们的研究结果表明,HOXA 10类小泛素化损害胚胎植入过程中的体外,并参与了RIF的发展。
HOXA10 has emerged as an important molecular marker of endometrial receptivity. Recurrent implantation failure (RIF) after in vitro fertilization-embryo transplantation (IVF-ET) treatment is associated with impaired endometrial receptivity, but the exact underlying mechanism of this phenomenon remains elusive. Here we found that HOXA10 was modified by small ubiquitin like-modifier 1 (SUMO1) at the evolutionarily conserved lysine 164 residue. Sumoylation inhibited HOXA10 protein stability and transcriptional activity without affecting its subcellular localization. SUMO1-modified HOXA10 expression was decreased in estradiol- and progesterone-treated Ishikawa cells. Sumoylation inhibited the accelerant role of HOXA10 in BeWo spheroid and mouse embryo attachment to Ishikawa cells. Importantly, aberrantly high SUMO1-HOXA10 expression was detected in mid-secretory endometria of women with RIF compared with that of the control fertile women. Together, our results suggest that HOXA10 sumoylation impairs the process of embryo implantation in vitro and takes part in the development of RIF.
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