线粒体DNA量化与人类欧卵性胚胎囊的发育潜力相关,但与马赛克胚胎囊的发育潜力不相关
Wen Luo1,2, Yi-Min Zheng1,3, Yan Hao1,2
1Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei, 230022, Anhui, China.
BMC pregnancy and childbirth
|June 15, 2023
概括
体皮活检中的线粒体DNA (mtDNA) 水平与胚胎细胞活力相关. 欧倍体胚胎中mtDNA的高水平与流产的增加和活产率的降低有关,这影响了试管婴儿的成功.
科学领域:
- 生殖生物学 生殖生物学
- 遗传学 是一个遗传学.
- 胚胎学 胚胎学
背景情况:
- 线粒体DNA (mtDNA) 在细胞能量生产中起着至关重要的作用.
- 评估胚胎细胞发育潜力对于体外受精 (IVF) 成功至关重要.
- 用于植入前遗传检测 (PGT) 的皮活检为胚胎健康提供了一个窗口.
研究的目的:
- 为了研究中皮膜活检样本中的线粒体DNA (mtDNA) 水平与欧体和马赛克胚芽细胞的发育潜力之间的关联.
- 确定mtDNA含量是否可以作为胚胎细胞活力和试管婴儿结果的生物标志物.
主要方法:
- 对2814个来自576对接受PGT治疗的夫妇的胚胎囊中的相对mtDNA水平的分析.
- 在盲目的研究设计中,在单个胚胎移植时,mtDNA含量是未知的.
- 胚胎命运 (幼体或马赛克) 与测量mtDNA水平的比较.
主要成果:
- 欧体胚胎的mtDNA水平较低,而非欧体和马赛克体胚胎的mtDNA水平较低.
- 在第5天活检的胚胎比在第6天活检的胚胎具有更高的mtDNA.
- 欧体胚胎中较高的mtDNA含量与流产率的增加和活产率的降低相关,但不是在马赛克胚胎中.
- 爆发率与mtDNA得分相关,下一代测序平台显著影响了mtDNA含量测量.
结论:
- 在皮活检中调整的mtDNA水平可能与胚胎细胞活力和试管婴儿结果有关.
- mtDNA含量可以作为预测性生物标志物用于流产和活产率在euploid胚胎.
- 需要进一步改进mtDNA分析方法,以提高预测胚胎细胞发育潜力的能力.
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