在个体体体外成熟过程中,毛囊液衍生的小细胞外囊泡改善了母细胞体的发育
Nima Azari-Dolatabad1,2,3, Davoud Eshghi1,4, Camilla Benedetti1,5
1Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium.
Frontiers in veterinary science
|October 6, 2025
概括
在体外卵细胞成熟过程中补充卵泡液衍生的小细胞外囊泡 (FF-sEVs),在个体培养系统中改善了牛胚胎的发育. 组培养条件掩盖了FF-sEVs对胚胎质量和细胞数量的有益影响.
科学领域:
- 生殖生物学 生殖生物学
- 细胞外囊泡 细胞外囊泡
- 辅助生殖技术 辅助生殖技术
背景情况:
- 毛囊液含有小的细胞外囊泡 (sEVs),在生殖过程中发挥作用.
- 了解FF-sEVs对卵细胞成熟和随后胚胎发育的影响对于改善辅助生殖技术 (ART) 至关重要.
研究的目的:
- 为了评估补充牛卵细胞成熟的效果,用卵泡液衍生的小细胞外囊泡 (FF-sEVs).
- 为了比较FF-sEVs补充剂在组与单个卵细胞培养系统中的结果.
- 评估对随后的牛胚胎发育和质量的影响.
主要方法:
- 从牛卵泡液 (FF) 中分离出小细胞外囊泡 (sEVs),并进行了表征.
- FF-sEVs被光标记,以确认在体外成熟 (IVM) 过程中被卵细胞和颗粒细胞吸收.
- 积卵细胞复合体 (COCs) 在体外成熟,在组和个体培养系统中具有不同度的FF-sEVs,随后进行受精,胚胎培养和胚胎细胞质量评估.
主要成果:
- 在组培养中,高度的FF-sEVs (10-50μg/mL) 与对照组相比,降低了第8天的胚胎细胞率和总细胞数量.
- 用6.5μg/mL的FF-sEV进行个体成熟,显著提高了第8天的胚胎细胞率,总细胞数量,内细胞质量和减少的亡比率.
- 只有在个体培养系统中观察到FF-sEVs的有益影响,这表明在组培养中具有掩盖效应.
结论:
- 补充FF-sEV可以提高牛胚胎能力,但效果高度依赖于培养系统.
- 在群体培养中的细胞间通信可能会掩盖FF-sEVs的好处,而个体系统则揭示了它们的潜力.
- 在采用最佳培养条件的情况下,FF-sEVs是提高ART结果的有希望的工具.
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