lysosomal 功能障碍的先天免疫感知驱动多个 lysosomal 存储障碍
Ailian Wang1,2,3, Chen Chen1, Chen Mei1,2,3
1MOE Laboratory of Biosystems Homeostasis and Protection, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, China.
Nature cell biology
|January 22, 2024
概括
溶酶体储存障碍 (LSD) 触发神经元内在的cGAS-STING信号,导致细胞死亡. 针对这种途径为各种LSD提供了统一的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 免疫学 免疫学 免疫学
背景情况:
- lysosomal 储存障碍 (LSD) 是一组超过 60 种遗传疾病,导致 lysosomal 功能障碍和渐进性细胞死亡.
- 在LSD中驱动细胞死亡的精确机制和有效的广谱治疗仍然难以捉摸.
研究的目的:
- 阐明不同LSD中神经元死亡的共同分子机制.
- 为多个LSD确定一个共同的治疗目标.
主要方法:
- 研究了cGAS-STING信号传递在受LSD引起基因突变 (Hexb,Gla,Npc1,Ctsd,Gba) 影响的神经元中的作用.
- 研究了cGAS或STING的基因切除,细胞质dDNA降解和溶酶体修复对疾病进展的影响.
- 在桑德霍夫病,法布里病和尼曼-皮克病的小鼠模型中评估治疗疗效.
主要成果:
- 各种与LSD相关的基因异常汇聚到激活神经元内在的cGAS-STING信号传递.
- 这种激活是由dSDNA的细胞质积累和神经元内的cGAS传感器驱动的.
- 在多个LSD模型中,这种途径的遗传或酶抑制,以及溶酶体修复,显著减少了神经元损失和减轻了疾病症状.
结论:
- 在LSD中溶解体功能障碍普遍激活神经元中的cGAS-STING先天免疫通路.
- 这一途径代表了多种LSD的共享致病机制.
- 针对cGAS-STING通路,为LSDs提供了一个有前途的统一治疗策略.
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