在阿尔茨海默病进展和认知性中单细胞多区域表观基因组重组
Zunpeng Liu1, Shanshan Zhang1, Benjamin T James1
1Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
Cell
|August 2, 2025
概括
这项研究揭示了阿尔茨海默病 (AD) 如何在单细胞分辨率下改变大脑表观基因组. 我们绘制了阿尔茨海默病的表观基因变化, 发现广泛的放松和侵蚀与认知衰退和性有关.
科学领域:
- 神经科学
- 基因组学
- 表观遗传学
背景情况:
- 阿尔茨海默病 (AD) 是一种进展性神经退行性疾病,表观遗传机制尚不清楚.
- 现有的研究缺乏单细胞分辨率来剖析AD的全脑表观遗传变化.
研究的目的:
- 创建阿尔茨海默病大脑的一个单细胞多原子图谱.
- 研究表观基因组变化的动态及其与AD病理和认知功能的关联.
主要方法:
- 从111个AD和对照个体的6个大脑区域中的350万个细胞中整合单细胞表观基因组和转录基因组资料.
- 识别和描述超过100万个候选 cis 调节元件 (cCREs) 和它们的调节模块.
- 大规模表观基因组组的分析及其AD进展的动态.
主要成果:
- 在AD大脑中发现广泛的表观基因松和细胞类型特异性的表观基因侵蚀特征.
- 表观基因稳定力学与细胞类型比例变化和质细胞状态转变的关联.
- 鉴定与AD病理,认知障碍和弹性相关的协调表观基因和转录基因失调.
结论:
- 这项研究提供了对阿尔茨海默病进展的表观遗传情景的关键见解.
- 这些发现突显了表观基因动态在认知衰退和弹性方面的作用,为阿尔茨海默病研究提供了宝贵的资源.
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