从老年小鼠的卵细胞中代谢变化的代代际传播
Hafsa Gulzar1,2, Richard Musson1,2, Simona Bisogno1
1Malopolska Centre of Biotechnology, Jagiellonian University in Kraków, Kraków, Poland.
Aging cell
|February 26, 2026
概括
在小鼠中,母亲的晚年导致氧化应激和代谢变化,影响后代. 这些变化包括卵细胞中的脂质积累,影响后代.
科学领域:
- 生殖生物学 生殖生物学
- 发展生物学 发展生物学
- 代谢健康 代谢健康
背景情况:
- 增加母亲的年龄是一个全球趋势,对后代的潜在健康后果.
- 来自老年母亲的卵子细胞 (先进的孕产妇年龄,AMA F0) 显示脂质滴滴增加和氧化变化.
- 卵细胞中的这些氧化变化被传递给早期胚胎.
研究的目的:
- 为了研究氧化变化的传播从AMA F0卵细胞到胎儿.
- 检查这些变化对新生儿和成人器官发育的影响.
- 确定这些代谢变化的跨代遗传.
主要方法:
- 对AMA衍生产前小鼠 (AMA F1) 富含脂质的器官 (肝脏,大脑) 中抗氧化剂水平的分析.
- 对成年后代的代谢重编程的评估.
- 检查第三代卵细胞 (AMA F3) 的脂质积累和分子变化.
主要成果:
- AMA F1小鼠在肝脏和大脑中呈现抗氧化剂的增加,这表明氧化应激.
- AMA小鼠的成年后代显示了代谢重编程的证据.
- AMA F3卵细胞显示了脂质积累和改变的视网膜蛋白/OXPHOS介质配置文件,类似于AMA F0卵细胞.
结论:
- 改变AMA F0卵细胞中的氧化代谢会在后代器官中引发一连串的氧化变化.
- 这些代谢变化是跨代遗传的,影响卵细胞到AMA F3阶段.
- 先进的孕产妇年龄显著重塑卵细胞脂质稳态,并将代谢变化传递到代后代.
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