综合应激反应在自身免疫糖尿病中促进巨细胞的炎症和迁移
Jiayi E Wang1, Charanya Muralidharan1, Armando A Puente1,2
1Department of Medicine and the Kovler Diabetes Center, The University of Chicago, Chicago, IL, USA.
Cell communication and signaling : CCS
|August 21, 2025
概括
在1型糖尿病中,抑制巨细胞的综合应激反应 (ISR) 会减少炎症和迁移. 这强调了ISR,特别是PKR,作为早期T1D干预的潜在治疗目标.
科学领域:
- 免疫学
- 细胞生物学
- 内分泌学
背景情况:
- 1型糖尿病 (T1D) 涉及胰腺β细胞的自身免疫破坏,巨细胞很早就入小岛.
- 综合应激反应 (ISR) 是一种管理应激并维持细胞功能的细胞通路.
研究的目的:
- 研究ISR在T1D发病过程中的巨细胞功能.
- 评估ISR抑制在T1D中的治疗潜力.
主要方法:
- 用ISR抑制剂 (ISRIB) 治疗骨髓衍生的巨细胞,并使其极化为类似M1的状态.
- 进行RNA测序以分析基因表达变化.
- 在实验室和体内 (斑马鱼) 评估了巨细胞迁移.
- ISRIB 用于糖尿病前的非肥胖型糖尿病小鼠 (NOD).
主要成果:
- 治疗ISRIB可以降低M1- 类巨细胞和iNOS的表达.
- 抑制ISR降低了与压力反应和巨细胞迁移有关的途径.
- 在体外和体内,ISRIB减少了巨细胞的迁移.
- 在NOD小鼠中,ISRIB治疗降低了岛屿巨细胞的透率,并增加了胰岛区域的PD- L1水平.
结论:
- 特别是通过PKR,ISR对T1D中巨驱动的炎症和迁移进行了关键调节.
- 在巨细胞中准ISR是一种早期T1D干预的潜在策略.
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