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探索米勒细胞衍生的外体在糖尿病视网膜病变中的作用
Mohamed S Gad1, Nehal M Elsherbiny2, Dalia R El-Bassouny3
1Eye Research Institute, Oakland University, Rochester, MI 48309-4479, USA; Eye Research Center (OUWB)/ERC, William Beaumont School of Medicine, Royal Oak, MI 48309-4479, USA; Medical Histology and Cell Biology, Faculty of Medicine, Mansoura University, Egypt.
Microvascular research
|May 9, 2024
概括
糖尿病视网膜病变 (DR) 涉及穆勒细胞外体,损害视网膜内皮细胞. 正常的Müller细胞的外体可以保护这些细胞,这表明DR的潜在治疗作用.
科学领域:
- 细胞生物学 细胞生物学
- 眼科医生 眼科 眼科
- 纳米医学是一种纳米医学.
背景情况:
- 外体细胞作为细胞间的载荷载体.
- 穆勒细胞与糖尿病视网膜病变 (DR) 病原发生有关,有助于屏障破坏和新血管化.
- 内皮细胞形成了内部的血视网膜屏障 (BRB).
研究的目的:
- 为了研究勒细胞衍生的外体对人类视网膜内皮细胞 (HREC) 活力和屏障功能的影响.
- 为了在正常和高血糖条件下比较这些影响.
主要方法:
- 穆勒细胞衍生的外体的分离和表征 (西式涂抹,纳米粒子追踪,电子显微镜).
- 评估HRECs (PKH67标记) 的外体细胞吸收.
- 评估HREC活力 (MTT测定,细胞缩蛋白质分析),屏障功能 (ZO-1,TER通过ECIS) 和细胞内水平 (光谱测量).
主要成果:
- 来自高血糖的穆勒细胞的外体较大,并显著降低了HREC活力,增加了亡,降低了ZO-1和TER,并增加了细胞内.
- 相反,正常血糖的米勒细胞衍生外体保护HREC免受高血糖引起的损伤,保持生命力和屏障完整性.
- 外基因组数量没有显著改变,但在高血糖症下,外基因组数量增加.
结论:
- 来自米勒细胞的外体体在DR中高血糖引起的内部BRB功能障碍中发挥着重要作用.
- 这些外体可以作为治疗点或DR治疗的输送系统.
- 进一步的体内研究是有必要的,以探索它们的治疗潜力.
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