在体外成熟过程中使用线素的风险及其潜在的保护作用,防止脂毒性诱导的卵细胞线粒体应激
Waleed F A Marei1,2, Omnia Mohey-Elsaeed3,4, Isabel Pintelon4
1Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Antwerp, Belgium. waleed.marei@uantwerpen.be.
Journal of assisted reproduction and genetics
|December 25, 2023
概括
高度的米托金 (MitoQ) 损害了卵细胞的发育,但精确的剂量可以防止脂肪酸引起的压力. 这一发现对于改善患有氧化应激和线粒体功能障碍的肥胖患者的生育治疗至关重要.
科学领域:
- 生殖生物学和线粒体医学.
背景情况:
- 肥胖引起的氧化应激和线粒体功能障碍会损害卵细胞质量和生育能力.
- 米托金 (MitoQ) 是一种辅酶Q10衍生物,向线粒体,以增强抗氧化能力.
研究的目的:
- 评估MitoQ补充剂在脂毒条件下对卵细胞的安全性和有效性.
- 确定MitoQ在体外成熟 (IVM) 期间在牛卵细胞中对棕酸诱导的线粒体功能障碍的保护作用.
主要方法:
- 在IVM期间,牛卵细胞暴露于MitoQ或其载体 (TPP) 的不同度.
- 评估了0.1μM MitoQ对棕酸 (PA) 诱导的脂毒性的保护能力.
- 分析了线粒体膜潜力,活性氧物种 (ROS) 水平和胚胎发育率.
主要成果:
- 高度 (1μM) 的MitoQ或TPP损害了线粒体潜力和胚胎发育.
- 棕酸 (PA) 增加了ROS和降低了卵细胞发育率,效应改善了0.1μM MitoQ.
- 在胚胎囊中,MitoQ使主要线粒体压力标志物 (HSP10,TFAM) 正常化,表明对脂毒性有保护作用.
结论:
- 虽然高的MitoQ度可能是有害的,由于阴离子过载,一个特定的剂量提供保护,防止脂毒性.
- 在IVM期间精心调整的MitoQ补充剂可以减轻线粒体压力,改善卵细胞发育能力,为生育治疗提供潜力.
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