在早产卵巢衰竭中对人类衰退DIS3变异的功能性表征††††††††††††††††††††††
Brianna L Kline1,2, Nicole A Siddall3, Fernando Wijaya3
1Murdoch Children's Research Institute, Royal Children's Hospital, 50 Flemington Rd, Parkville VIC 3052, Melbourne, Australia.
Biology of reproduction
|October 14, 2024
概括
我们在患有过早卵巢缺陷 (POI) 的患者中发现了DIS3基因中的新型同卵性误解变异. 酵母和的功能研究表明,这种变异会损害卵巢发育,为POI遗传学提供了新的见解.
科学领域:
- 遗传学 遗传学 是一个
- 生殖生物学 生殖生物学
- 分子生物学分子生物学
背景情况:
- 过早卵巢衰竭 (POI) 影响40岁以下的女性,呈现出不同的表型和遗传原因.
- 已知有100多种致病基因变异,但对误解变异的功能验证对于诊断至关重要.
- 对误解变异的生物信息预测有局限性,需要实验性表征.
研究的目的:
- 确定和功能性地描述与早产卵巢缺陷 (POI) 相关联的DIS3基因中的新型误解变异.
- 通过模型生物来研究已识别的DIS3变异对卵巢发育和功能的影响.
主要方法:
- 整体外体序列测序 (WES) 用于识别POI患者的遗传变异.
- 使用Saccharomyces cerevisiae和Drosophila melanogaster模型进行了DIS3变异的功能表征.
- 该研究评估了酵母和卵巢发育/果中的卵室完整性中的线粒生长.
主要成果:
- 在DIS3基因中的第一个同卵性误解变异 (c.2320C>T;p.His774Tyr) 在POI患者中被确定.
- 这种DIS3变异导致了Saccharomyces cerevisiae的线粒生长中轻微的缺陷.
- 在Drosophila中,携带患者变异的人类DIS3导致异常的卵巢发育和卵腔退化.
结论:
- 已确定的同卵性DIS3变体 (c.2320C>T; p.His774Tyr) 可能具有有害性,并与早产卵巢衰竭有关.
- 功能性研究提供了支持DIS3在卵巢发育中的作用的证据,并强调了变体表征的重要性.
- 这一发现扩大了POI的遗传景观,并为改善临床管理和生育保护策略提供了基础.
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