在阿尔茨海默氏症的表观遗传失调外周免疫力
Abhirami Ramakrishnan1, Natalie Piehl1, Brooke Simonton1
1The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
Neuron
|February 10, 2024
概括
这项研究揭示了阿尔茨海默病 (AD) 患者的外周免疫系统的显著表观遗传变化. 我们在T细胞和单细胞中发现了新的DNA可访问性位点,为AD病原体提供了新的见解.
科学领域:
- 免疫学 免疫学 免疫学
- 神经科学是一个神经科学.
- 遗传学 遗传学是一种遗传学.
背景情况:
- 外周免疫系统在阿尔茨海默病 (AD) 中的作用仍然未被使用先进的测序研究.
- 在AD外周免疫力中的表观遗传和转录性改变需要详细的调查.
研究的目的:
- 研究患有阿尔茨海默病的个体外周免疫系统的表观遗传和转录性变化.
- 为了确定与AD相关的免疫细胞中的特定分子变化.
主要方法:
- 采用单细胞测序策略,包括检测转化酶可访问染色体 (ATAC-seq) 和RNA测序.
- 从AD患者的外周免疫细胞中分析了表观遗传修饰和基因表达.
主要成果:
- 从AD患者的外周免疫细胞中观察到大量的开放色素区域.
- 在CD8 T细胞中发现了CXC动机化学因子受体3基因附近的cis调节元件.
- 在单细胞中的核因子kappa B亚单元2基因附近确定了一个新的AD特异性转录因子结合部位.
- 在单细胞中证明了阿波利波蛋白E基因型依赖的表观遗传变化.
- 在与零星AD风险相关的基因中发现差异可访问的染色质区域.
结论:
- 周围免疫系统在阿尔茨海默病中表现出显著的表观遗传变化.
- 在T细胞和单细胞中发现了新的调控元素和AD特异性的结合部位.
- 这些发现突显了表观遗传学,遗传风险因素和外周免疫系统中AD进展之间的相互作用.
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