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Updated: Jun 14, 2025

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Culture and Co-Culture of Mouse Ovaries and Ovarian Follicles
Published on: March 17, 2015
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在实验室中,通过重建粒粉细胞-卵细胞复合体†,从未发育的卵子中在小鼠前腔毛囊中生产可行的卵子
Tomohiro Kohama1, Ikuo Tomioka2, Kanako Morohaku1
1Laboratory of Germ Cell Physiology and Engineering, Faculty of Agriculture, Shinshu University, Nagano, Japan.
Biology of reproduction
|September 5, 2024
概括
这项研究展示了一种新的方法,通过使用重建的粒状细胞-卵细胞复合体,从剥离的未发育卵细胞中生产可行的卵子. 这一突破为辅助生殖技术提供了新的可能性,通过挽救以前丢弃的卵子.
科学领域:
- 生殖生物学 生殖生物学
- 辅助生殖技术 辅助生殖技术
- 卵细胞发育 卵细胞发育
背景情况:
- 在实验室培养前毛囊对于辅助生殖技术至关重要,但剥离的未发育卵细胞往往被丢弃.
- 缺乏有效的培养这些卵子细胞成可活卵的方法.
- 了解细胞通信是改善卵细胞发育的关键.
研究的目的:
- 通过重建粒粉细胞-卵细胞复合体,为小鼠剥离未发育的卵细胞建立体外培养方法.
- 分析这些重建的复合体内的细胞通信.
- 评估使用这种新方法培养的卵细胞的生命力和发育潜力.
主要方法:
- 被剥离的未发育的卵细胞与颗粒细胞聚合,形成复合体.
- 复合体在不同氧气条件下 (20%对5%O2) 培养了8天.
- 重建后的复合体在5%O2.2下4天内在原蛋白涂层插件上进一步培养.
- 评估了成熟率,受精率和胚胎发育率.
主要成果:
- 重建的粒粉细胞-卵细胞复合体形成在5%O2 (64.9%) 下显著高于20%O2 (42.3%).
- 观察到跨区域的投影,表明细胞通信得到改善.
- 较高的成熟卵 (>90%) 和胚芽细胞 (61.9%) 的比率在5% O2.2.以下实现.
- 在胚胎移植后,出生了6只活着的幼.
结论:
- 颗粒状细胞-卵细胞复合体的重建为体外培养脱皮未发育卵细胞提供了一种有效的方法.
- 低氧张力 (5%O2) 增强了复杂的形成和随后的卵细胞发育.
- 这种技术为拯救和利用以前被认为在辅助生殖中不可行的卵子提供了一个有希望的策略.
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