通过WNT抑制因子1介导的糖解保护糖尿病视网膜病变中的光受体细胞
Bolin Chen1,2, Jing Zou1,2, Lihui Xie1,2
1Eye Center of Xiangya Hospital, Hunan Key Laboratory of Ophthalmology, Central South University, No 87, Xiangya Road, Kaifu District, Changsha, 410008, Hunan, China.
Journal of translational medicine
|March 6, 2024
概括
在糖尿病视网膜病变 (DR) 鼠标模型中,Wnt抑制因子1 (WIF1) 过度表达改善了视力和视网膜健康. 通过抑制Wnt/β-catenin-HIF-1α-Glut1通路,WIF1减少了氧化应激,这为治疗DR提供了潜在的潜力.
科学领域:
- 眼科医生 眼科 眼科
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 糖尿病视网膜病变 (DR) 涉及缺氧诱导因子 (HIF-1α) 和氧化应激,导致光受体神经退行和微血管损伤.
- 在DR和其他神经退行性眼病中,Wnt抑制因子1 (WIF1) 的作用尚不清楚.
研究的目的:
- 研究WIF1在糖尿病视网膜病变中的治疗潜力.
- 阐明WIF1影响DR光受体功能的机制.
主要方法:
- 给C57BL/KsJ-db/db小鼠注射了WIF1过度表达的晶状病毒.
- 视网膜结构和功能使用OCT,TEM,H&E染色和ERG进行了评估.
- 在体外研究中,在高葡萄糖条件下使用了661个W细胞,并进行了分子分析,包括scRNA-seq,qPCR,免疫染色和西部斑点.
主要成果:
- 在db/db小鼠中WIF1过度表达改善了病理表现和视觉功能,恢复了线粒体和光受体结构.
- 在WIF1治疗后,ERG揭示了a波电位振幅的恢复.
- 在体外和scRNA-seq数据表明,WIF1抑制了Wnt/β-catenin-HIF-1α-Glut1通路,减少氧化应激并增强细胞活力.
结论:
- WIF1 抑制了 Wnt/β-catenin-HIF-1α-Glut1 糖解路径,减轻氧化应激,并保留了 DR.中的光受体结构和功能.
- 作为糖尿病视网膜病变和其他神经退行性眼部疾病的治疗剂,WIF1显示出希望.
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