脂肪衍生干细胞外体KLF3-AS1通过YBX1/PI3K/Akt/mTOR信号减弱卵巢功能
Wei Zhao1,2, Haili Zhang3, Liyan Zhang1
11Department of Reproductive Center, Xilingol League Central Hospital, Inner Mongolia Xilingol League, 026000, China.
Physiology international
|April 11, 2025
概括
携带 lncRNA KLF3-AS1 的脂肪酸衍生干细胞外体可以通过提高粒粉细胞活力来使衰老的卵巢复苏. 这种疗法针对YBX1和PI3K/AKT/mTOR通路,为卵巢衰老提供了一种新的方法.
科学领域:
- 生殖生物学 生殖生物学
- 干细胞生物学 干细胞生物学
- 分子生物学分子生物学
背景情况:
- 脂肪衍生干细胞 (ADSC) 衍生外体被研究用于治疗生物活性分子,如长非编码RNA (lncRNAs).
- 长非编码RNAs (lncRNAs) 是在外体中丰富的关键调节剂,影响细胞功能.
- 这项研究重点关注由ADSC外体传递的lncRNA KLF3-AS1及其对卵巢衰老的影响.
研究的目的:
- 研究ADSC衍生的外体KLF3-AS1在减轻卵巢衰老中的治疗潜力.
- 阐明涉及YBX1和PI3K/AKT/mTOR信号通路的潜在分子机制.
主要方法:
- 分离了ADSCs,并对外体进行了表征.
- 由ADSC衍生的外基因组被设计为输送KLF3-AS1并给老年雌性小鼠.
- 评估了卵巢功能,卵泡发育和细胞亡/衰老.
- 分析了分子相互作用 (RNA拉向,RIP) 和信号通路激活 (PI3K/AKT/mTOR).
主要成果:
- 由ADSC衍生出来的外体细胞成功地将KLF3-AS1传递到初级颗粒细胞 (pGCs).
- 外体KLF3-AS1治疗改善了卵巢体重,增强了卵泡发育,并减少了老年小鼠的亡.
- KLF3-AS1直接与YBX1相互作用,调节PI3K/AKT/mTOR路径.
- KLF3-AS1 枯竭逆转了有益效应,而 YBX1 过度表达则挽救了它们.
结论:
- ADSC衍生的外体KLF3-AS1对卵巢衰老有治疗作用.
- 该机制涉及准YBX1并激活PI3K/AKT/mTOR信号通路.
- 这种方法增强了pGC活力,并改善了老年人卵巢功能.
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