非白血病原体体点突变的遗传决定因素和基因组后果
Joshua S Weinstock1, Sharjeel A Chaudhry2,3, Maria Ioannou4
1Department of Human Genetics, School of Medicine, Emory University, Atlanta, GA, USA.
medRxiv : the preprint server for health sciences
|September 4, 2024
概括
没有已知突变的克隆性血液形成 (CH-LPMneg) 使用整个基因组进行了表征. 一种新的方法,GEM率,确定了遗传和表型联系,包括白细胞数量增加和外周动脉疾病风险.
科学领域:
- 遗传学 遗传学 是一个
- 基因组学就是基因组学.
- 血液学 血液学 血液学
背景情况:
- 克隆性血液形成 (CH) 涉及血液中遗传相同的细胞扩张.
- 已知的遗传病变经常驱动CH,但CH可以在没有它们的情况下发生.
- 没有已知的驱动突变的CH的特征对于了解血液健康至关重要.
研究的目的:
- 在缺乏白血病原点突变 (CH-LPMneg) 的个体中鉴定CH的特征.
- 开发一种方法来量化从没有配对组织的整个基因组的突变负担.
- 确定CH-LPMneg.的遗传,基因组和表型相关物.
主要方法:
- 分析了来自NHLBI TOPMed倡议的51,399个完整基因组.
- 开发了基因组和表观基因组知情突变 (GEM) 率,以量化体质突变负担.
- 进行了全基因组关联研究,精细映射,变异对基因分析和多组织转录组分析.
主要成果:
- 已经确定了七个与CH-LPMneg相关的基因 (TCL1A,TERT,SMC4,NRIP1,PRDM16,MSRA,SCARB1).
- GEM率与白细胞数量增加和外围动脉疾病风险有关.
- 功能性分析表明,SMC4和NRIP1与HSC的自我更新和扩散有关.
结论:
- GEM率有效量化了整个基因组的突变负担.
- 发现了CH-LPMneg的新型遗传决定因素和表型关联.
- 这项工作提供了关于无已知驱动突变的CH的机制和健康影响的见解.
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