在全身性硬化症中,CCL19+ 纤维细胞-CCR7+ T 细胞交叉协调免疫纤维细胞信号网络
Wei Guo1, Zhaohua Li1, Dan Xu1
1Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing, China.
The British journal of dermatology
|December 1, 2025
概括
系统性硬化症 (SSc) 纤维化是由CCL19+纤维细胞驱动的,这些纤维细胞招募CCR7+ T细胞. 阻止这种CCL19-CCR7相互作用在小鼠模型中减少了纤维化,揭示了SSc病变发生的关键途径.
科学领域:
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
- 纤维化研究 纤维化研究
背景情况:
- 了解多样化的纤维细胞子集对于阐明系统性硬化症 (SSc) 发病因子至关重要.
- 纤维细胞在SSc病理中的免疫调节功能仍然不太清楚.
研究的目的:
- 探索纤维细胞如何通过免疫调节信号传递促进纤维化,并与SSc.中的免疫细胞交叉交流.
- 研究CCL19-CCR7轴在SSc中的作用.
主要方法:
- 单细胞RNA测序 (scRNAseq) 来自SSc患者和对照者的皮肤和血液.
- 使用多重免疫组织化学,流细胞测量和白素诱导的SSc小鼠模型进行验证.
- 在体外测量纤维细胞中CCL19表达和体内阻断CCL19-CCR7轴.
主要成果:
- CCL19+纤维细胞在SSc皮肤上升调节,与纤维化严重程度相关,可能由VEGFA诱导.
- CCL19+纤维细胞在空间上位于T细胞中,CCL19-CCR7是关键的相互作用.
- CCR7+ T 细胞,特别是 CD8+ T 细胞,表现出亲纤维细胞的特性,并与细胞外基质产生纤维细胞相互作用.
- 在小鼠模型中,阻断CCL19-CCR7轴可缓解皮肤纤维化.
结论:
- 可能由VEGFA诱导的CCL19+纤维细胞通过促进CCR7+T细胞透来重塑profibrotic免疫.
- 这种相互作用驱动SSc纤维化进展.
- CCL19-CCR7轴代表了SSc.的潜在治疗目标.
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