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人类大脑中细胞类型特异性遗传调节的单核地图

Biao Zeng^1,2,3,4, Hui Yang^1,2,3,4, Prashant N M^1,2,3,4

¹Center for Disease Neurogenomics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.

Research square

|December 23, 2024

概括

这项研究创建了人类大脑基因调节的单核地图,揭示了细胞特异性基因对疾病风险的影响. 它通过分析不同细胞类型和祖先的基因表达来确定神经系统疾病的新目标.

科学领域:

神经科学是一个神经科学.
遗传学是一个遗传学.
分子生物学分子生物学

背景情况:

常见疾病的遗传风险变体通常存在于非编码调节DNA中.
了解细胞特异性基因调节对于发现疾病机制至关重要.
之前的批量组织研究对细胞特异性的洞察力有限.

研究的目的:

在人类前额叶皮质中构建一个全面的单核遗传调节图谱.
确定细胞类型特定的基因调节效应及其与疾病特征的关联.
探索跨发育和细胞类型的动态和远程基因调节.

主要方法:

单核RNA测序 (snRNA-seq) 在560万个来自1384个不同人体捐赠者的细胞核上进行.
在8个主要细胞类和27个子类中进行多分辨率分析.
基因变异的局部化分析与基因调节和疾病特征.

主要成果:

确定了14,258个基因的基因调节,其中857个显示细胞类特异性和981个子类特异性效应.
发现了针对阿尔茨海默病和精神分裂症的新型细胞类型特异性基因,这些基因被大量分析遗漏.
发现了2073个具有整个发育过程中的动态调节效应的基因和1655个具有跨调节效应的基因.

结论:

高分辨率的地图集揭示了人类大脑的细胞类型特定的调节架构.
为了解神经精神病和神经退行性疾病的遗传基础提供了新的机制目标.
强调单核分辨率对于剖析疾病复杂的遗传结构的重要性.

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