具有跨祖先差异表达的基因被丰富为祖先特异性疾病效应,可能是由于基因与环境相互作用
Juehan Wang1, Zixuan Zhang1, Zeyun Lu1
1Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA; Center for Genetic Epidemiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
祖先之间的遗传差异影响基因表达和疾病风险. 了解细胞类型特定的基因表达和环境相互作用是解开祖先特异性疾病影响的关键.
科学领域:
- 基因组学就是基因组学.
- 人类遗传学 人类遗传学
- 分子生物学分子生物学
背景情况:
- 全基因组关联研究 (GWAS) 揭示了祖先特异性的变异效应大小.
- 了解这些差异的起源对于疾病遗传学至关重要.
研究的目的:
- 在祖先之间 (ancDE基因) 描述细胞类型特定的基因表达差异.
- 调查在祖先特异性疾病GWASs中ancDE基因附近变异的丰富.
- 探索基因与环境相互作用在祖先特异性影响中的作用.
主要方法:
- 分析了来自东亚 (EAS) 和欧洲 (EUR) 外周血液单核细胞 (172,385个细胞) 的单细胞RNA测序数据.
- 杆祖先匹配的GWAS数据用于31种疾病和复杂的特征 (平均. n ~9万个EAS, ~267000欧元).
- 测试了与疾病相关的变异中ancDE基因周围变异的丰富性,具有祖先特异性的效应大小.
主要成果:
- ancDE基因通常是细胞类型特定的.
- 这些基因被丰富了环境相互作用途径和变异,具有祖先特异性疾病影响.
- 在B细胞中表现出祖先特异性髓质细胞白血病1 (MCL1) 表达和在淋巴细胞数量GWASs中的等位基因效应.
结论:
- 特定于细胞类型的基因环境相互作用可能会在祖先之间连接调节和疾病架构.
- 多样化,大规模的单细胞和GWAS数据集对于推进人类疾病理解至关重要.
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