诱导多能干细胞生长速度的遗传学
Brian N Lee1, Henry J Taylor1,2,3, Filippo Cipriani4
1Center for Precision Health Research, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA.
bioRxiv : the preprint server for biology
|July 9, 2025
概括
人类诱导的多能干细胞 (iPSCs) 对其增殖率具有复杂的遗传控制. 罕见的基因变异,如WDR54中的变异,显著影响iPSC生长,以及影响细胞生长的多基因背景.
科学领域:
- 干细胞生物学 干细胞生物学
- 遗传学 遗传学 是一个
- 生物医学研究生物医学研究
背景情况:
- 人类诱导的多能干细胞 (iPSCs) 是研究中的重要工具,但它们的增殖决定因素尚未完全理解.
- 了解iPSC生长变异对于可靠的实验和疾病建模应用至关重要.
研究的目的:
- 研究影响人类诱导多能干细胞 (iPSC) 增殖的遗传和表观遗传因素.
- 识别与iPSC生长率变异相关的特定基因和遗传变异.
主要方法:
- 使用高通量时间延迟成像测量了来自602名捐赠者的iPSC线的扩散.
- 增长曲线下的增长面积 (gAUC) 被量化并与基因表达和基因型数据相关联.
- 进行了全基因组关联研究和双胞胎分析,以评估遗传贡献.
主要成果:
- 3,091个基因与iPSC增殖 (gAUC) 相关,包括已知的细胞生长调节剂.
- 在WDR54中,罕见的有害变异与减少iPSC生长有关.
- 共同的遗传变异解释了iPSC生长率差异的很大一部分 (71-75%),表明了高度多基因的基础.
结论:
- iPSC的生长速度受到复杂的遗传结构的影响,包括罕见的,高影响的变体和常见的多基因因素.
- 这些发现凸显了在聚合研究和疾病建模中需要考虑内在iPSC生长差异的必要性.
- WDR54被确定为与iPSC增殖相关的基因,为未来的研究提供了潜在的目标.
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