线粒体DNA基因型,女性不育,卵巢反应和卵细胞突变发生之间的相互作用
Annelore Van Der Kelen1,2, Letizia Li Piani1,3,4,5, Joke Mertens1
1Vrije Universiteit Brussel (VUB), Brussels Health Campus/Faculty of Medicine and Pharmacy, Research Group Genetics, Reproduction and Development , Laarbeeklaan 103, 1090 Brussels, Belgium.
Human reproduction open
|January 20, 2025
概括
线粒体DNA (mtDNA) 变异会影响接受生育治疗的女性的卵巢反应. 某些mtDNA基因型与卵细胞产量相关,这表明线粒体遗传学在女性生殖成功中的作用以及通过医疗辅助生殖 (MAR) 怀孕的后代的潜在风险.
科学领域:
- 生殖医学 生殖医学
- 线粒体遗传学 线粒体遗传学
- 不孕症研究 不孕症研究
背景情况:
- 不孕症与各种基因有关,人们担心医疗辅助生殖 (MAR) 可能会将这些基因传递给后代.
- 线粒体DNA (mtDNA) 变异在女性不孕症和卵巢反应中的特定作用仍然在很大程度上未被探索.
- 了解mtDNA的影响对于评估生殖结果和与MAR相关的潜在风险至关重要.
研究的目的:
- 调查线粒体DNA (mtDNA) 基因型与女性不育或卵巢反应之间的关联.
- 确定医疗辅助生殖 (MAR) 技术是否会影响卵细胞中mtDNA变异的流行.
- 探索特定mtDNA变异和关键生育指标 (如卵细胞检索数) 之间的关系.
主要方法:
- 一项队列研究分析了132名接受卵巢刺激的妇女的261个卵细胞.
- 进行了卵细胞mtDNA的深度测序,以确定基因型,并比较肥沃和不育的群体.
- 通过统计分析 (费舍尔精确测试,曼-惠特尼U,逻辑/波森/线性回归) 评估了与生育特征和卵细胞产量的关联.
主要成果:
- 在同质细胞mtDNA变异或单元组与不孕状态或抗穆勒激素 (AMH) 水平之间没有发现任何关联.
- 哈普乐组K与检索的第II阶段 (MII) 卵子细胞数量呈正相关性.
- 异质体变异的增加,特别是非同义蛋白编码,高变性 (HV) 区域和rRNA变异的增加,与检索的卵细胞数量呈正相关.
结论:
- 线粒体遗传学似乎影响卵巢反应,特定的mtDNA变异与卵细胞产量相关.
- 这项研究证实了研究结果,即卵细胞队列大小与潜在有害mtDNA变异的存在有关.
- 鉴于这些遗传关联,需要进一步的研究来评估通过MAR怀孕的后代的潜在风险.
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