TGF-β1驱动着因特林依赖的细胞迁移和纤维性疾病中的微血管不稳定
Amanda S Pellowe1, Michelle J Wu1, Tae-Yun Kang1
1Department of Biomedical Engineering, Yale University, New Haven, Connecticut.
The American journal of pathology
|March 28, 2024
概括
皮细胞 (PCs) 在纤维性疾病中从血管迁移,由转化生长因子β1 (TGF-β1) 和整体素驱动. 这种迁移会破坏微血管的稳定,表明早期的组织纤维化.
科学领域:
- 细胞生物学 细胞生物学
- 血管生物学 血管生物学
- 纤维化研究纤维化.
背景情况:
- 内皮细胞 (EC) - 细胞 (PC) 相互作用对于微血管稳定性至关重要.
- 功能障碍的EC-PC相互作用是纤维化疾病的特征,如全身性硬化症.
- 个人电脑在微血管信号和功能障碍中的作用尚未完全理解.
研究的目的:
- 研究整合素-矩阵相互作用如何影响PC迁移和肌纤维细胞转化.
- 确定促炎性 (TNFα) 和纤维性 (TGF-β1) 因素对PC表型的影响.
- 评估PC变化对内皮功能障碍和血管稳定性的影响.
主要方法:
- 人类PC被用TNFα或TGF-β1.1治疗.
- 评估了PC迁移,矩阵沉积和整体表达.
- 测量EC angiopoietin-2水平作为血管不稳定性的标志物.
- 检查了系统性硬化症患者的皮肤,以检查血管稳定性的变化.
主要成果:
- 无论是TNFα还是TGF-β1,都改变了PC整蛋白表达和矩阵沉积.
- TGF-β1诱导PC迁移以整合素依赖的方式.
- PC迁移与EC angiopoietin-2水平的增加相关,这表明血管不稳定.
- 系统性硬化皮肤显示血管稳定性发生变化.
结论:
- TNFα和TGF-β1改变PC整合蛋白表达和矩阵沉积,促进迁移.
- 综合素依赖的PC迁移会使微血管系统不稳定.
- 微血管不稳定可能是组织纤维化的早期指标.
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