树突细胞PAR1-S1P3信号对凝血和炎症
Frank Niessen1, Florence Schaffner, Christian Furlan-Freguia
1Department of Immunology, The Scripps Research Institute, La Jolla, California 92037, USA.
Nature
|February 29, 2008
概括
败血症中的凝血和炎症涉及蛋白酶激活受体1 (PAR1) 和斯芬戈-1-酸盐受体3 (S1P3) 在树突细胞中发出信号. 抑制这种交叉谈话可以减少全身炎症和致命性.
科学领域:
- 免疫学 免疫学 免疫学
- 血管生物学 血管生物学
- 传染性疾病 传染性疾病
背景情况:
- 由组织因子启动的凝血是全身炎症反应综合征 (如败血症) 的关键.
- 凝血和炎症之间的联系尚未完全理解.
- 蛋白酶激活受体1 (PAR1) 信号与致命的炎症反应有关.
研究的目的:
- 为了阐明结血和炎症在败血症中的合机制.
- 为了研究PAR1和斯芬戈-1-酸盐 (S1P) 在败血症期间在树突细胞中信号传递的作用.
- 为了确定败血症引起的炎症和凝血的治疗点.
主要方法:
- 利用化学和遗传探针研究PAR1和S1P受体3 (S1P3) 在树突细胞中的信号传递.
- 研究了抑制血栓或PAR1信号传递的影响.
- 研究了树突细胞PAR1-S1P3交叉对话在败血症模型中的作用.
主要成果:
- 在败血症中,PAR1信号维持致命的炎症反应,这种反应可以通过抑制血栓或PAR1来阻止.
- 树突细胞PAR1-S1P3交叉交谈对于放大败血症炎症至关重要.
- 状细胞作为血液凝结和炎症交叉的中心枢纽,在淋巴管内起作用.
- 破坏树突细胞的PAR1-S1P3信号隔离淋巴结中的炎症,并减少肺炎.
结论:
- 淋巴细胞凝固的状细胞激活是一种促进全身炎症和败血症致死性的新机制.
- 在树突细胞中准PAR1-S1P3轴为败血症提供了潜在的治疗策略.
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