综合应激反应特征驱动单细胞功能障碍在GBA1和LRRK2相关的帕金森病
Daniele Mattei1,2,3,4, Erica Brophy1,2,3,4, Mikaela Rosen1,2,3,4
1Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
medRxiv : the preprint server for health sciences
|November 24, 2025
概括
帕金森病 (PD) 涉及单细胞功能障碍,特别是在遗传形式. 单细胞中受损的蛋白质处理和应激反应有助于PD的免疫问题,这表明了新的治疗点.
科学领域:
- 神经免疫学 神经免疫学
- 细胞生物学 细胞生物学
- 遗传学 遗传学 是一个
背景情况:
- 单细胞在帕金森病 (PD) 发病过程中发挥作用.
- 异常性PD病例显示线粒体和溶酶体功能障碍.
- 与PD相关的突变对单细胞功能的影响尚不清楚.
研究的目的:
- 调查GBA1-和LRRK2-相关PD和异常PD患者的单细胞中的转录和功能变化.
- 识别共享和突变特定的分子特征.
- 确定这些分子变化的功能后果.
主要方法:
- 对外围单细胞的转录组分析.
- 网络和路径分析.
- 对患者衍生的巨细胞的功能性测试.
主要成果:
- 转录组数据显示了免疫失调,溶酶体和线粒体通路缺陷,以及PD单细胞的综合应激反应 (ISR) 激活.
- 观察到与ER压力,蛋白质稳定,线粒和I型干扰素信号传递相关的异常基因表达.
- 巨体显示线粒体潜能受损,蛋白质解体功能障碍和缺陷的细胞化.
结论:
- 在PD中,单细胞免疫功能障碍与蛋白质稳定性受损,器官应激和ISR激活有关.
- 在遗传性PD单细胞中存在融合的分子和功能异常.
- 蛋白质稳定性衰竭和ISR激活是免疫功能障碍的潜在上游驱动因素,提供了新的治疗点.
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