黑可以通过激活神经元中的Nrf2/HO-1通路来缓解血诱导的铁亡
1Department of Neurosurgery, the Second Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, Shaanxi, China. shpingg@126.com.
European review for medical and pharmacological sciences
|October 3, 2024
概括
黑色素通过减少铁诱导的神经细胞死亡 (ferroptosis) 来保护脑内出血后的脑损伤. 它激活Nrf2/HO-1通路,为ICH中的铁亡提供了一个有前途的治疗策略.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 细胞生物学 细胞生物学
背景情况:
- 铁亡是一种编程细胞死亡,在脑内出血 (ICH) 后显著导致神经元损伤.
- 血红蛋白中的含铁分子血红素会加剧ICH后的神经损伤.
- 梅拉素对ICH的保护作用是公认的,但其精确的机制,特别是在血红素诱导的铁亡中,需要阐明.
研究的目的:
- 在ICH的背景下,研究黑在缓解血红素诱导的铁亡中的作用和潜在机制.
- 探索黑激素的保护作用是否涉及Nrf2/HO-1信号通路的激活.
主要方法:
- 在体内研究中,小鼠接受了血红素注射,随后接受了黑治疗,评估包括行为测试和组织学分析 (H&E,Nissl,普鲁士蓝色染色).
- 在体外研究中使用了用血红素治疗的HT-22细胞,通过RT-qPCR和免疫涂抹来评估细胞活力,铁含量,脂质过氧化标记 (MDA,4-HNE) 和关键蛋白/mRNA表达 (GPX4,SLC7A11,Nrf2,HO-1).
- 使用siRNA进行了Nrf2淘汰,以证实它在美拉托尼治疗效果中的作用.
主要成果:
- 在接受血红素注射的小鼠中,黑治疗显著改善了神经功能,并减少了神经元损伤.
- 在体外和体外,黑素降低了细胞死亡和铁积累,同时增加了氧化应激标志物 (MDA,4-HNE).
- 黑色素逆转了血红素诱导的GPX4,SLC7A11,Nrf2和HO-1的降低调节;Nrf2敲击降低了黑色素对血红素诱导的铁亡的保护作用.
结论:
- 黑色素有效地减轻血红素诱导的铁亡以及随后的神经元损伤.
- 治疗机制涉及Nrf2/HO-1通路的激活.
- 黑素代表着一种潜在的治疗药物,用于管理与脑内出血相关的铁亡.
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