赛马福林7a调节视网膜内皮细胞中的炎症媒介和透性
Li Liu1, Youde Jiang1, Jena J Steinle1
1Department of Ophthalmology, Visual, and Anatomical Sciences, Wayne State University School of Medicine, Detroit, MI 48201, USA.
Microvascular research
|July 15, 2023
概括
赛马林7a (Sema7a) 在糖尿病视网膜病变中驱动炎症和血管损伤. 在视网膜细胞中抑制Sema7a会恢复保护性蛋白质,这表明糖尿病眼病的新治疗点.
科学领域:
- 眼科医生 眼科 眼科
- 血管生物学 血管生物学
- 细胞生物学 细胞生物学
背景情况:
- 炎症在损害视网膜血管系统方面起着至关重要的作用.
- 了解炎症通路的调节对于治疗糖尿病视网膜病变至关重要.
研究的目的:
- 为了研究赛马福林7a (Sema7a) 在高葡萄糖诱导的炎症和视网膜内皮细胞 (REC) 透性变化的作用.
- 探索Sema7a作为糖尿病视网膜病变的潜在治疗点.
主要方法:
- 主要视网膜内皮细胞 (REC) 在正常 (5 mM) 或高葡萄糖 (25 mM) 中培养.
- 在高葡萄糖条件下使用小干扰RNA (siRNA) 抑制了Sema7a.
- 炎症调解剂,ZO-1和奥克卢丁的水平使用西班牙白斑测量.
主要成果:
- 在REC中,高葡萄糖增加了炎症媒介,并减少了紧结蛋白 (ZO-1,ocludin).
- 治疗Sema7a siRNA显著降低了炎症介导体.
- 在高葡萄糖条件下,Sema7a抑制恢复了ZO-1和奥克卢丁的水平.
结论:
- 赛马福林7a调解高葡萄糖对视网膜内皮细胞的有害影响.
- 向Sema7a可能是通过保持血管完整性来管理糖尿病视网膜病变的新疗法策略.
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