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神经红素表达调节线粒体功能和内皮细胞内氧化还原平衡

Ashton N Jorgensen¹, Nabil A Rashdan², K N Shashanka Rao³

¹Department of Pharmacology, Toxicology, and Neuroscience, Louisiana State University Health Sciences Center, Shreveport, LA, 71103, USA.

|February 15, 2024

概括

内皮细胞中神经红素 (Ng) 缺乏会损害线粒体功能,增加氧化应激,导致血管功能障碍. 米托埃布塞伦治疗挽救了这些影响,突出了Ng Ng.

科学领域:

心血管生物学心血管生物学
线粒体医学线粒体医学
神经生物学神经生物学神经生物学

背景情况:

内皮功能障碍是血管疾病的早期指标,通常与线粒体问题有关.
神经红素 (Ng),以其在神经元信号传递中的作用而闻名,现在在内皮细胞中发现.

研究的目的:

调查内皮神经红素 (Ng) 在调节线粒体功能和氧化应激在血管健康中的作用.
确定缺乏对内皮激活和心血管疾病进展的影响.

主要方法:

使用内皮特异性的NG淘汰小鼠 (Cre-CDH5-Ng) 和人类大动脉内皮细胞 (HAEC).
采用无标签量化蛋白质组学,西部涂抹,免疫光染色,海马测定和RoGFP-Orp1用于ROS检测.
研究了MitoEbselen的治疗潜力.

主要成果:

在HAEC中耗导致Ca2+-CaM信号传递,内皮活化和氧化还原不平衡的增加.
恩格淘汰赛小鼠显示流媒体扩张 (FMD) 功能受损.
缺乏导致线粒体功能障碍,线粒体呼吸能力下降,线粒体ROS (mtROS) 生产升高.
米托埃布塞伦治疗恢复了线粒体呼吸,减少了mtROS,并改善了eNOS表达和氧化 (NO) 水平.

结论:

内皮内在维护线粒体功能和氧化还原平衡方面发挥着至关重要的作用.
缺乏症通过增加mtROS和降低NO生物可用性而加剧内皮功能障碍.
用MitoEbselen等药物准线粒体ROS可能为与Ng功能障碍相关的血管疾病提供治疗益处.

关键词:

过氧化是一种过氧化.这就是MitoEbselen.线粒体中的线粒体.神经激素素是一种神经激素.有反应性氧物种的反应性氧物种.

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