自由的顶端表面异细胞CDH1同型结合是人类胚胎囊-子宫内膜相互作用的主要媒介
Hanzhang Ruan1,2, Andy Chun Hang Chen1,2,3, Yuxuan Xue4
1Department of Obstetrics and Gynaecology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.
Human reproduction (Oxford, England)
|February 18, 2026
概括
胚胎信号诱导子宫内膜上皮细胞 (EEC) 表面的E-cadherin (CDH1) 表达,通过同性恋结合促进胚胎的附着. 这一发现突出了CDH1的存在.
科学领域:
- 生殖生物学 生殖生物学
- 细胞粘附 细胞粘附
- 分子生物学分子生物学
背景情况:
- 人类胚胎囊-子宫内膜相互作用对于生育治疗至关重要,有助于评估子宫内膜接受度和胚胎囊质量.
- 众所周知,E-cadherin (CDH1) 通过侧面粘附结保持上皮质完整性,但其在某些上皮质的顶端表面的功能尚不清楚.
研究的目的:
- 调查表达在子宫内膜上皮细胞 (EECs) 自由角表面的E-cadherin (CDH1) 是否参与胚胎附着.
- 阐明CDH1在人类胚胎细胞和子宫内膜之间的初始相互作用中的作用.
主要方法:
- 对 trofhoblastic球体 (BAP-EB) 和受体EEC进行比较表面蛋白质分析,以确定潜在的粘附蛋白.
- 活细胞免疫光染色以确认人类胚芽细胞和EEC中的顶端CDH1表达.
- 使用抗体阻断和基因淘汰来评估CDH1在细胞粘附和胚胎附着中的作用的功能性研究,使用原子力显微镜测量细胞表面粘附性.
主要成果:
- CDH1被确定为一种关键的交互性蛋白质,可以调解 trofhectodermal CDH1 和子宫内膜 CDH1.1 之间的同性结合.
- 在植入窗口期间,EECs中的角CDH1表达显著更高,并且与成功的怀孕结果相关.
- 胚胎信号,包括来自胚芽细胞和hCG的信号,被证明可以诱导EEC中的顶端CDH1表达,增强它们的粘性.
结论:
- 胚胎信号诱导子宫内膜上皮细胞中的顶端CDH1表达,这对于通过同型CDH1结合来粘附胚胎细胞至关重要.
- 在EEC中角CDH1表达作为子宫内膜受容性的标志物,并可能预测试管婴儿结果.
- 这项研究增强了对人类胚胎与母亲相互作用的理解,并将CDH1确定为改进辅助生殖技术的潜在目标.
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