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奥利奥坎塔尔通过调节人类视网膜色素上皮细胞中的MAPK通路来缓解CoCl2诱导的氧化损伤和亡
Ko-Chieh Huang1, Yi-Fen Chiang1, Mohamed Ali2
1School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan; Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
|October 28, 2024
概括
甲醇可以保护视网膜色素上皮细胞 (RPE) 免受低氧诱导的氧化应激和亡. 这种天然化合物增强了细胞活力,减少了DNA损伤,为视网膜疾病提供了潜在的治疗益处.
科学领域:
- 眼科医生 眼科 眼科
- 细胞生物学 细胞生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 视网膜缺氧导致RPE细胞功能障碍和亡,导致视力受损.
- 氧化应激是视网膜疾病的关键因素,但其在缺氧引起的损伤中的确切作用尚未完全理解.
- 橄油中发现的甲醇具有已知的生物活性.
研究的目的:
- 为了研究oleocanthal对ARPE-19细胞中化 (CoCl2) 诱导的缺氧的保护作用.
- 在视网膜缺氧的背景下,阐明奥莱康塔尔抗氧化特性背后的分子机制.
主要方法:
- ARPE-19细胞暴露于CoCl2以诱导缺氧.
- 用MTT测定来评估细胞活力.
- 分别使用Annexin V/PI染色,彗星测定,H2DCFDA/MitoSOX和JC-1染色来评估亡,DNA损伤,活性氧物种 (ROS) 水平和线粒体膜潜力 (MMP).
- 西部斑点分析用于检查MAPK信号通路.
主要成果:
- 在CoCl2治疗的ARPE-19细胞中,奥利奥坎塔尔显著改善了细胞活力.
- 甲醇减少了DNA损伤,并降低了由CoCl2.2诱导的ROS水平.
- 通过增加JC-1聚合物/单体比率,奥洛坎塔尔保留了MMP,并通过降低MAPK信号调节减轻了CoCl2诱导的亡.
结论:
- 奥利奥坎塔尔对RPE细胞中缺氧诱导的损伤表现出显著的抗氧化和抗亡作用.
- 甲醇通过增强活力,减少氧化应激和DNA损伤以及调节MAPK信号来保护RPE细胞.
- 这些发现表明oleocanthal是治疗视网膜缺氧和相关视力障碍的潜在治疗剂.
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