雌激素信号在塞尔托利细胞中隙通路激活中的作用
Sylwia Lustofin1, Alicja Kamińska1, Barbara Bilińska1
1Department of Endocrinology, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, Krakow, 30-387, Poland.
Reproductive sciences (Thousand Oaks, Calif.)
|June 12, 2025
概括
雌激素信号传递,特别是通过雌激素受体2,增强了Sertoli细胞中的Notch1通路活性,这对精子生成至关重要. 这揭示了雌激素在维持丸平衡中的新机制.
科学领域:
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
- 细胞信号传递 细胞信号传递
背景情况:
- 塞尔托利细胞对于哺乳动物丸的精子生成至关重要.
- 这些细胞对雄激素和雌激素做出反应,这是关键的生殖激素.
- 雌激素信号在塞尔托利细胞功能中的作用,特别是Notch通路,需要进一步阐明.
研究的目的:
- 为了研究雌激素信号对动物塞尔托利细胞中正规的Notch通路的影响.
- 为了确定参与这种相互作用的特定雌激素受体.
- 了解雌激素如何影响细胞间细胞间的细胞间通信.
主要方法:
- 使用了塞尔托利细胞系和初级的塞尔托利细胞培养.
- 用17β-雌激醇来评估其对Notch通路组件的影响.
- 测量了Notch1激活,RBPJ转录活性,以及效应基因/蛋白质表达 (Hes1,Hey1).
主要成果:
- 17β-雌激醇通过雌激素受体2促进了Notch1的激活和Hes1的表达.
- 17β-雌激醇与雌激素受体1结合,降低了Hey1基因表达.
- G蛋白结合雌激素受体1在调节Notch1信号传递方面没有显著作用.
结论:
- 核雌激素受体在控制塞尔托利细胞中Notch1通路活性方面发挥着关键作用.
- 雌激素受体2介导的信号增强了Notch1的激活和Hes1的表达.
- 雌激素受体1介导的信号抑制了Hey1的表达,表明了差异调节.
- 这项研究揭示了一种新的雌激素作用机制,用于维持精子表皮的恒常性.
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