铜毒性和缺乏:在ALS中蛋白质聚合的核心是一个恶性循环
Jin-Hong Min1, Heela Sarlus1, Robert A Harris1
1Department of Clinical Neuroscience, Karolinska Institutet, Center for Molecular Medicine, Karolinska University Hospital at Solna, Stockholm, Sweden.
Frontiers in molecular neuroscience
|July 25, 2024
概括
肌缩性侧面硬化症 (ALS) 涉及铜恒温的破坏,导致cuproenzyme功能障碍. 通过配送剂和陪伴者恢复铜平衡,可以治疗这种无法治愈的神经退行性疾病.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 毒理学 毒理学 毒理学
背景情况:
- 肌缩性侧面硬化症 (ALS) 的病理生理学显示,铜的恒常性被破坏,有过量和缺乏.
- 对于生理功能至关重要的酶受到铜不平衡的影响.
- ALS的症状与铜缺乏 (血管,抗氧化剂,线粒体) 和毒性 (ROS,蛋白质聚合) 相一致.
研究的目的:
- 探索铜在ALS病理生理学中的作用,重点关注蛋白质静止和蛋白质聚合.
- 为了研究铜,聚合性蛋白 (TDP-43,C9ORF72,SOD1,FUS) 和它们的聚合之间的相互作用.
- 提出基于恢复铜平衡的ALS治疗策略.
主要方法:
- 对铜代谢,ALS病理生理学和蛋白质聚合现有文献的审查.
- 分析铜,活性氧物种 (ROS) 和关键的ALS相关蛋白质之间的相互作用.
- 综合发现,提出潜在的治疗方法.
主要成果:
- 铜的失调有助于ALS通过损害cuproprotein功能和促进ROS生成和蛋白质聚合.
- 蛋白质聚合物可以加剧铜不平衡,创造一个有害的反循环.
- 环境毒素 (BMAA,重金属) 可能通过扰乱铜代谢并促进聚合,引发或加剧ALS.
结论:
- 铜蛋白功能的丧失是ALS病理学的核心,由未结合的铜和ROS驱动.
- 蛋白质聚合和铜耗尽的积极反循环是ALS的特征.
- 通过铜输送剂和陪伴剂恢复铜平衡,可能与血清素,为ALS提供了一个有前途的治疗策略.
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