皮表皮生长因子受体通过YAP-CCN2依赖的方式促进糖尿病视网膜纤维化
Wei Zhang1, Xiaopei Zhang2, Kexin Chen2
1Department of Ophthalmology, People's Hospital of Hotan District, Xinjiang Uygur Autonomous Region, China; Tianjin Eye Hospital, Tianjin Key Lab of Ophthalmology and Visual Science, Tianjin Eye Institute, Clinical College of Ophthalmology Tianjin Medical University, Tianjin, 300020, China.
Experimental eye research
|November 14, 2025
概括
糖尿病视网膜病变会通过视网膜纤维化导致视力丧失. 向视网膜血管内皮细胞中的表皮生长因子受体 (EGFR) 信号,可以通过抑制穆勒细胞激活和细胞外基质沉积来减少纤维化.
科学领域:
- 眼科医生 眼科 眼科
- 糖尿病学 糖尿病学
- 细胞生物学 细胞生物学
背景情况:
- 糖尿病视网膜病变 (DR) 导致视力丧失,主要是由于糖尿病视网膜纤维化.
- 视网膜的穆勒细胞 (rMCs) 和细胞外基质 (ECM) 沉积是DR病变发生的关键组成部分.
研究的目的:
- 研究表皮生长因子受体 (EGFR) 在视网膜血管内皮细胞 (RVECs) 中的信号传递在刺激rMCs和促进DR的视网膜纤维化中的作用.
- 探索EGFR-YAP-CCN2信号通路作为糖尿病视网膜纤维化潜在的治疗标.
主要方法:
- 糖尿病小鼠接受了EGFR激酶抑制剂erlotinib的治疗.
- 来自初级培养RVECs的条件介质被用于评估rMC激活.
- 进行了连接组织生长因子 (CCN2) 的视网膜内皮特异性基因删除和Yes相关蛋白 (YAP) 的抑制.
- 研究了RhoA/岩石信号通路.
主要成果:
- 在糖尿病小鼠中,埃洛提尼布治疗减少了ECM沉积和视网膜纤维化.
- 糖尿病RVEC条件介质在体外激活了人类穆勒细胞系 (hMCs),表明了膜信号传递.
- 在视网膜内皮中CCN2缺乏抑制了rMC激活和ECM沉积.
- YAP抑制减少了视网膜纤维化和rMC激活,而YAP调节了CCN2.
- 在糖尿病人视网膜中,EGFR通过RhoA/Rock依赖机制调节YAP.
结论:
- 在糖尿病视网膜病变中,RVECs通过EGFR依赖的膜机制刺激rMCs并驱动纤维化.
- EGFR-YAP-CCN2信号轴对于糖尿病视网膜纤维化至关重要.
- 针对这种途径为治疗DR相关的视力丧失提供了潜在的治疗策略.
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