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同时进行植入前遗传检测和通过转录组测序对人类胚胎进行能力评估
Yuqian Wang1,2,3,4,5,6,7, Ye Li1,2,3,4,5,7, Xiaohui Zhu1,2,3,4,5
1State Key Laboratory of Female Fertility Promotion, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|June 20, 2024
概括
本研究介绍了基于RNA的植入前遗传测试 (PGT),用于准确检测遗传突变和胚胎能力评估. 这种新的方法改进了基于DNA的PGT,提供了更高的准确性和更好的植入成功预测.
科学领域:
- 生殖生物学 生殖生物学
- 遗传学 是一个遗传学.
- 分子诊断学 分子诊断
背景情况:
- 目前用于植入前遗传测试 (PGT) 的单细胞全基因组放大方法存在基因覆盖不均和高等位基因脱落率,限制了准确性.
- 现有的PGT方法面临特定遗传条件的挑战,包括高de novo突变率,伪基因和重复扩张.
研究的目的:
- 开发和验证一种基于RNA的新型PGT方法,用于同时检测基因突变和评估胚胎能力.
- 为了克服基于DNA的PGT的局限性,利用丰富的mRNA转录在肌体细胞中.
主要方法:
- 开发一种基于RNA的诊断方法,利用mRNA转录在皮肤细胞中.
- 该方法在捐赠的胚胎细胞上进行验证,并随后应用于具有单一性缺陷的家族胚胎.
主要成果:
- 在直接突变检测中达到高达95%的准确性,超过了基于DNA的方法.
- 在87.5%的病例中成功预测了植入失败,并且在预测成功植入方面显示出希望.
- 在具有挑战性的突变检测场景中表现出卓越的表现,包括高de novo率,伪基因和重复扩张.
结论:
- 开发的基于RNA的PGT方法是可行的,与基于DNA的方法相比,它在检测基因突变方面提供了更高的准确性.
- 这种基于RNA的PGT方法为胚胎植入能力提供了宝贵的见解.
- 这项研究为PGT建立了一个有希望的新范式,增强了辅助生殖技术的诊断能力和预测能力.
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