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线粒体DNA疾病的单细胞多基因组学揭示了人类免疫细胞中净化选择的动态
Caleb A Lareau1,2,3,4,5, Sonia M Dubois6, Frank A Buquicchio7
1Department of Pathology, Stanford University, Stanford, CA, USA. clareau@stanford.edu.
Nature genetics
|June 29, 2023
概括
线粒体DNA (mtDNA) 突变通过破坏细胞代谢引起疾病. 这项研究揭示了mtDNA删除动态和代谢脆弱性如何在不同类型的血液细胞中使用单细胞多组学而变化.
科学领域:
- 遗传学 是一个遗传学.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 致病性线粒体DNA (mtDNA) 突变会损害细胞代谢,导致疾病异质.
- 临床表型不同,表明细胞类型和器官特定的代谢缺陷.
研究的目的:
- 从单个大规模 mtDNA 缺失 (SLSMD) 患者的单个细胞中量化 mtDNA 缺失和细胞状态.
- 研究致病性mtDNA异质体和不同细胞类型的代谢脆弱性的动态.
主要方法:
- 开发了一种多omics方法来分析单细胞mtDNA删除和细胞状态特征.
- 分析了来自六名代表SLSMD表型谱的患者的206,663个细胞.
- 经过验证的体外发现和扩展分析,用于造血和红细胞原始体.
主要成果:
- 揭示了致病性mtDNA删除异质体的动态,与净化选择一致.
- 在体内T细胞状态中识别出明显的代谢脆弱性.
- 观察到细胞类型特定的基因调控适应性,以应对mtDNA完整性扰乱.
结论:
- 病原性mtDNA异质体的动态在个体血液和免疫细胞和血统之间有所不同.
- 单细胞多组学对于了解疾病中的线粒体遗传学具有强大作用.
- 细胞环境显著影响线粒体基因组不稳定性的影响.
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