人口规模的骨肌单核多原子分析揭示了广泛的特定环境的遗传调节
Arushi Varshney1, Nandini Manickam1, Peter Orchard1
1Dept. of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA.
bioRxiv : the preprint server for biology
|January 3, 2024
概括
这项研究绘制了人类骨肌肉的地图.
科学领域:
- 基因组学就是基因组学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 人体生理学 人体生理学
背景情况:
- 骨肌肉是代谢特征的关键,如2型糖尿病.
- 了解其遗传调节需要识别细胞类型,调节元素和因果变异.
研究的目的:
- 在人类骨肌肉中创建染色质可访问性和转录组的人口规模单核地图.
- 确定细胞类型特定的影响代谢特征的遗传调节机制.
主要方法:
- 从287个人类骨肌肉活检中生成人口规模单核 (sn) 染色质可访问性 (snATAC-seq) 和转录组 (snRNA-seq) 地图.
- 综合基因变异以发现表达量的特征位点 (eQTL) 和染色质可访问性QTL (caQTL).
- 分析了细胞类型特定的调控模式和与全基因组关联研究 (GWAS) 信号的同位化.
主要成果:
- 确定了13种骨肌肉细胞类型和>7,000个eQTL和>100,000个caQTL.
- 发现了细胞特异性调节元素和基因型对环境的相互作用.
- 将38个特征的约3,500个GWAS信号与骨肌肉的sn-e/caQTLs联系在一起,通常是通过caQTLs,揭示了细胞特异性的调节范式.
结论:
- 在高分辨率下照亮了人类骨肌肉的遗传调节架构.
- 证明了在GWAS功能研究中种群规模染色体分析的重要性.
- 提供了复杂人体组织中多原子映射的模板.
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