SEMA3C/PLXND1 相互作用通过TGF-β1信号通路调节基质纤维细胞中的原蛋白代谢
Yanqiu Tang1, Sihui Wang2, Yang Xu2
1Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China; Department of Dermatologic Surgery, Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences & Peking Union Medical College, Nanjing 210042, China.
The American journal of pathology
|March 15, 2026
概括
SEMA3C/PLXND1通路通过激活TGF-β1信号来驱动 keloid 纤维化,导致原和细胞外基质沉积的增加. 针对这个轴提供了一个潜在的治疗策略,用于 keloid 治疗.
科学领域:
- 皮肤病学和分子生物学
- 纤维化研究 纤维化研究
- 细胞信号通路 细胞信号通路
背景情况:
- 状体的发病包括复杂的信号通路和细胞外基质 (ECM) 沉积.
- 了解新的分子机制对于开发有效的 keloid 疗法至关重要.
研究的目的:
- 识别和表征新的信号轴,特别是SEMA3C/PLXND1通路,参与了 keloid 病原体的产生.
- 通过转化生长因子β1 (TGF-β1) 信号传递,研究SEMA3C/PLXND1在纤维化过程中的作用.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 在化体和正常皮肤样本上,以绘制细胞间通信的地图.
- 使用SEMA3C,PLXND1siRNA或TGF-β1抑制剂治疗的 keloid 纤维细胞进行实验验证.
- 使用转录组学,qPCR,西式斑点和免疫光学分析原蛋白,纤维素和TGF-β1表达的分析.
主要成果:
- scRNA-seq 确定了显著增强的细胞间沟通在 keloids,与增加的纤维细胞相互作用.
- SEMA3C (连接体) 和PLXND1 (受体) 对被确定为 keloid 样本中的关键相互作用.
- 在SEMA3C上调的原I/III,纤维蛋白和TGF-β1; PLXND1的淘汰或TGF-β1的抑制减弱了这些纤维化标志物.
结论:
- SEMA3C/PLXND1轴是通过激活TGF-β1信号传递而导致 keloid 纤维化的一个新型驱动器.
- 这一途径促进过度的原和ECM沉积在 keloids.
- 准SEMA3C/PLXND1轴为 keloid 治疗提供了一个有前途的治疗途径.
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