血小板激活刺激巨细胞通过PF4/CXCR3信号传递来增强性结肠炎
Yuxiao Niu1, Anhong Li2, Weihua Xu3
1Graduate School, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China.
International journal of molecular medicine
|March 14, 2025
概括
血小板通过通过血小板因子4 (PF4) /C-X-C动机化学因子受体3 (CXCR3) 途径激活巨细胞来加剧性结肠炎 (UC). 抑制这种途径为UC提供了潜在的新疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 血液学 血液学 血液学
背景情况:
- 血小板的血液静止和免疫作用是众所周知的,但它们在炎症性肠病 (IBD),特别是性结肠炎 (UC) 中的具体参与仍然不清楚.
- 了解血小板 - 巨细胞相互作用对于阐明UC病原性至关重要.
研究的目的:
- 通过血小板因子4 (PF4) 调查血小板激活影响巨细胞C-X-C动机化学因子受体3 (CXCR3) 的机制.
- 确定PF4/CXCR3通路在恶化性结肠炎 (UC) 进展中的作用.
主要方法:
- 使用硫酸德克斯 (DSS) 诱导的大肠炎的小鼠模型.
- 进行了血小板与单细胞 (THP-1) 和用PF4或CXCR3抑制剂 (AMG487) 治疗的细胞的体外共同培养.
- 通过RT-qPCR,西部抹杀和流细胞计,评估巨表型,炎症性细胞因子表达 (IL-1β,IL-6,TNF-α),氧化应激,亡标记物和信号通路 (MAPK,NF-κB). 在体内研究涉及抗血小板药物和CXCR3抑制剂治疗.
主要成果:
- 血小板PF4在体内与M1巨标记物同局部化,并在体内诱导M1巨分化和促炎性细胞因子释放.
- 在THP-1细胞中,PF4治疗增强了氧化应激和亡,激活了MAPK和NF-κB通路.
- 抑制CXCR3可以逆转PF4诱导的M1极化和炎症.
- 在体内抑制血小板或CXCR3改善了小鼠的UC相关炎症.
结论:
- 血小板和巨细胞通过UC中的PF4/CXCR3通路相互作用,加剧炎症.
- PF4/CXCR3轴代表了治疗性结肠炎的潜在治疗目标.
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