DAP12通过调节巨细胞透来影响UPEC或LPS引起的急性炎症反应
Shuangshuang Sun1, Ruilin Yi1, Xiaoyu Wang2
1Institute of Immunology and Molecular Medicine, Jining Medical University, Jining, China.
Molecular immunology
|August 20, 2025
概括
12 kD (DAP12) 信号的DNAX激活蛋白在尿路感染 (UTI) 期间会加剧损伤. 抑制这种途径减少了巨细胞的透和脏损伤,为尿路感染提供了潜在的治疗点.
科学领域:
- 免疫学
- 肝脏病学
- 微生物学
背景情况:
- 尿路感染 (UTI),通常是由尿病原菌大肠杆菌 (UPEC) 引起的,是常见的细菌感染.
- 严重的尿路感染可能导致损伤,其特征是M1型巨细胞透的增加.
- 12 kD的DNAX激活蛋白 (DAP12) 在髓状细胞和NK细胞中表达,并通过TREM受体调解免疫反应.
研究的目的:
- 研究DAP12在UPEC引起的损伤中的作用.
- 为了确定DAP12是否在UPEC感染期间调节巨细胞极化.
- 探索TREM1-DAP12途径作为尿路感染的潜在治疗点.
主要方法:
- 在UPEC感染模型中研究了DAP12缺失对损伤的影响.
- 分析了对UPEC感染的宏细胞透和偏离.
- 使用LPS诱导的内毒素冲击模型来评估DAP12缺乏的影响.
主要成果:
- 在感染UPEC的小鼠中,DAP12的删除显著减少了损伤.
- 在UPEC感染期间,在DAP12缺乏的小鼠中观察到巨细胞透的减少.
- 在内毒素冲击模型中,DAP12缺乏抑制了LPS诱导的巨分化,并降低了死亡率.
结论:
- 在UPEC感染期间,TREM1-DAP12信号通路对中介损伤至关重要.
- 针对TREM1-DAP12途径可能为UPEC诱导的损伤提供一种新的治疗策略.
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