线粒体过载是一氧化碳神经毒性的触发因素
Plamena R Angelova1, Artyom Y Baev2,3, Sergey O Bachurin4
1Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, London, UK. p.stroh@ucl.ac.uk.
Cell death & disease
|October 21, 2025
概括
有毒的一氧化碳 (CO) 破坏脑细胞中的信号传递,导致细胞死亡. 在重新氧化过程中防止线粒体过载和反应性氧物种 (ROS) 生产,可以保护神经元和星球细胞.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 一氧化碳 (CO) 作为调节细胞功能的传气体,但在高剂量时是有毒的.
- 高剂量的CO暴露会导致幸存者的死亡率和严重的神经疾病.
- 了解CO对中枢神经系统的影响对于治疗中毒至关重要.
研究的目的:
- 研究有毒CO度和随后的再氧化对原皮质神经元和星体细胞中信号传递的影响.
- 阐明中枢神经系统中CO诱导的细胞死亡背后的机制.
- 确定预防CO神经毒性的潜在治疗点.
主要方法:
- 主要皮层神经元和星体细胞暴露于CORM-401.1的有毒CO度.
- 监测细胞内 (Ca2+) 水平和信号通路.
- 评估线粒体吸收,反应性氧物种 (ROS) 生产和细胞活力.
- 评估抑制线粒体摄取和ROS产生的保护作用.
主要成果:
- 在神经元 (NMDA/AMPA受体介导) 和星球细胞 (VNUT2/P2Y受体介导) 中,CO诱导了不同的细胞内Ca2+信号.
- 这两种细胞类型都在CO去除 (再氧化) 时表现出线粒体Ca2+吸收和ROS产量的增加.
- 这种线粒体过载和ROS激增导致线粒体透性过渡和细胞死亡.
- 部分抑制线粒体Ca2+吸收或ROS产生可以防止CO诱导的细胞死亡.
结论:
- 线粒体过载和ROS产生之间的双向相互作用对于CO诱导的神经元和天体细胞死亡至关重要.
- 在复氧化阶段向线粒体摄取和ROS产生,提供了针对CO神经毒性的潜在治疗策略.
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