卵巢毛囊中N-cadherin机械感应控制卵细胞成熟和排卵
Alaknanda Emery1, Orest W Blaschuk2, Doan T Dinh1
1Robinson Research Institute, Adelaide Medical School, The University of Adelaide, Adelaide, Australia.
eLife
|July 29, 2025
概括
通过感知机械线索,N-cadherin (CDH2) 对卵巢毛囊发育和排卵至关重要. 用抗体向N-cadherin抑制了积卵细胞复合体成熟和排卵,提供了一个潜在的避孕机制.
科学领域:
- 生殖生物学 生殖生物学
- 细胞生物学 细胞生物学
- 分子内分泌学分子内分泌学
背景情况:
- N-cadherin (CDH2) 是细胞粘附分子,对组织形态发生至关重要.
- 在哺乳动物的卵巢中,N-cadherin形成粘附于粒状细胞,积细胞和卵细胞之间的结点.
- 这些结点与调节卵巢卵泡发育和排卵有关.
研究的目的:
- 研究N-cadherin在卵巢卵泡发育和排卵中的机械传感作用.
- 探索向N-cadherin作为抑制排卵的方法的潜力.
主要方法:
- 在试验室和活体小鼠模型中利用小分子N-cadherin对手.
- 进行了转录组分析,以分析基因表达变化.
- 通过使用遗传模型 (Cdh2Fl/FL;Amhr2Cre/+) 进行了颗粒素特异性的N-cadherin耗尽.
主要成果:
- N-cadherin对抗剂抑制了积卵细胞复合体的成熟,并显著降低了小鼠的排卵率.
- 观察到Hippo/YAP和β-catenin通路的失调以及细胞外矩阵重组.
- 特定于花粉的N-cadherin枯竭也导致排卵减少和改变机械敏感基因表达.
结论:
- 通过机械传感集成,N-cadherin在卵巢卵泡发育和排卵中发挥着关键作用.
- 准N-cadherin信号传递是抑制排卵的潜在策略.
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