死亡巨细胞释放的循环FABP5作为DAMP起作用,加剧了败血症炎症
Rong Wu1, Yunong Zeng2, Jiaochan Han3
1Department of Rheumatology and Immunology, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China.
Cell reports
|October 31, 2025
概括
循环脂肪酸结合蛋白5 (FABP5) 表明败血症的结果更差. 这种与损伤相关的分子模式 (DAMP) 通过激活巨细胞上的Toll-like受体4 (TLR4) 来驱动炎症,但阻止它可以提高生存率.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 败血症病理生理学病理生理学
背景情况:
- 与损伤相关的分子模式 (DAMPs) 可以触发过度的免疫反应.
- 脂肪酸结合蛋白5 (FABP5) 已知用于脂肪酸运输,但其在败血症中的作用尚不清楚.
- 增加FABP5与不良的败血症结局有关.
研究的目的:
- 研究FABP5在败血症中的作用.
- 确定FABP5在败血症中的作用来源和机制.
- 评估FABP5作为败血症治疗点.
主要方法:
- 在败血症患者中测量了循环FABP5水平.
- 研究的FABP5起源于巨细胞的烧灭.
- 检查了FABP5与托尔类受体4 (TLR4) 和下游信号通路 (NF-κB,MAPK) 的相互作用.
- 在小鼠败血症模型中评估了阻断循环FABP5的治疗潜力.
主要成果:
- 在败血症患者中,循环FABP5水平升高,与不良结果相关.
- 在晚期败血症中,FABP5源于巨细胞的热.
- 循环FABP5激活TLR4,通过NF-κB和MAPK通路诱导二次炎症.
- 减少的,细胞内FABP5抑制了巨细胞质死,而氧化的,细胞外FABP5促进了它.
- 阻断循环FABP5改善了败血症小鼠的生存率.
结论:
- 循环的FABP5在败血症中充当DAMP,通过TLR4激活加剧炎症.
- FABP5为败血症治疗提供了潜在的治疗点.
- 减少循环FABP5水平的策略可能会改善败血症的结果.
更多相关视频
07:55A Macrophage Reporter Cell Assay to Examine Toll-Like Receptor-Mediated NF-kB/AP-1 Signaling on Adsorbed Protein Layers on Polymeric Surfaces
Published on: January 7, 2020
7.8K
07:46Isolation, Characterization, and Purification of Macrophages from Tissues Affected by Obesity-related Inflammation
Published on: April 3, 2017
25.9K
相关概念视频
Inflammation
61.5K
Overview
61.5K
Phagocytosis of Apoptotic Cells
4.9K
Cells undergoing apoptosis form apoptotic bodies that must be removed immediately to prevent inflammation, autoimmune diseases, and necrosis. Phagocytosis is carried out by professional phagocytes such as macrophages or immature dendritic cells. Non-professional phagocytes such as epithelial cells and fibroblasts also take part in this process; however, they are not as effective as professional phagocytes.
Normal cells contain receptors that prevent them from being recognized...
Normal cells contain receptors that prevent them from being recognized...
4.9K
