通过单细胞证据,研究棕化基因和病之间的因果关系,利用多omics 门德尔随机化分析和验证
Jin Qiu1, Dehai Xian2, Kaiwen Yang3
1School of Basic Medical Sciences, Luzhou, Sichuan, China.
Journal of molecular neuroscience : MN
|October 16, 2025
概括
某些棕化基因ZDHHC3和ZDHHC20显示出对焦性风险的保护作用. 这项门德尔随机化研究强调了它们在减少发病率方面的作用,特别是在特定类型的脑细胞中.
科学领域:
- 遗传学 遗传学 是一个
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 是一种复杂的神经系统疾病,具有重要的遗传成分.
- 棕化是一种翻译后的修饰,在蛋白质的功能和局部化中起着至关重要的作用.
- ZDHHC基因家族编码参与棕化过程的蛋白酸转移酶.
研究的目的:
- 使用孟德尔随机化研究ZDHHC家族基因与风险之间的因果关系.
- 确定特定的ZDHHC基因,这些基因可能会保护或增加对的易感性.
- 探索脑组织中相关ZDHHC基因的细胞类型特定表达模式.
主要方法:
- 两个样本的孟德尔随机化 (MR) 分析利用来自血液和大脑组织的表达定量特征位置 (eQTL) 数据.
- 来自FinnGen资源的的全基因组关联研究 (GWAS) 数据.
- 逆方差加权 (IVW),加权中位数和MR-Egger方法用于初级和灵敏度分析.
- 基于总结数据的MR (SMR) 分析用于信号同位化和单细胞转录组数据 (GSE302285) 用于细胞表达模式.
主要成果:
- 门德尔随机分析显示,ZDHHC3和ZDHHC20的表达增加与风险降低有显著关联.
- 相反,ZDHHC8和ZDHHC18的高表达与的风险增加有关.
- 进一步的分析表明,ZDHHC3和ZDHHC20具有保护作用,特别是在焦点中.
- 细胞类型特定的eQTL分析表明,ZDHHC20在刺激神经元中具有显著的保护作用.
- 单细胞转录组学证实ZDHHC20在星细胞和神经元中的表达,以及患者脑组织中神经元中的ZDHHC3表达.
结论:
- 遗传证据支持ZDHHC3和ZDHHC20在焦点风险中的因果保护作用.
- 这些发现凸显了细胞类型特定的棕化过程在病理生理学中的重要性.
- 这项研究为了解机制和制定有针对性的治疗策略提供了新的理论基础.
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