脂质介导的线粒变化导致与衰老相关的感觉运动缺陷
Natalia Oleinik1,2, Onder Albayram3,4, Mohamed Faisal Kassir1,2
1Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, South Carolina, USA.
Aging cell
|August 24, 2023
概括
研究人员发现了细胞清理过程 - - 细胞菌如何在衰老过程中影响大脑新陈代谢. 这一发现为与年龄相关的神经系统疾病 (如ALS) 提供了新的治疗途径.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 代谢过程中的代谢.
背景情况:
- 线粒细胞功能障碍在衰老和神经退行过程中对大脑新陈代谢的影响在很大程度上是未知的.
- 线粒体质量控制中至关重要的线粒体,随着年龄的增长而下降,可能导致神经元功能障碍.
研究的目的:
- 为了研究老年神经元中改变的线粒的代谢后果.
- 为了确定分子机制,链接mitophagy与神经元代谢和与年龄相关的缺陷.
主要方法:
- 使用了小鼠模型 (CerS1突变,PARKIN-/-, p17/PERMIT-/-) 和体外神经元培养.
- 研究了p17/PERMIT载体和陶胺合成酶1 (CerS1) 在线粒中的作用.
- 分析了代谢途径,包括氨酸酸盐/酸盐/酸盐轴和葡萄糖/果糖积累.
- 评估了LCL768.8的感觉运动功能和治疗潜力.
主要成果:
- p17/PERMIT-CerS1-介导的线粒会改变神经元的新陈代谢,导致d-葡萄糖和果糖的积累.
- 在CERS1突变,PARKIN-/-,或p17/PERMIT-/-小鼠中,功能障碍的线粒会阻止这些代谢变化.
- 类酸诱导的线粒会改善老年小鼠的运动缺陷,而烟酸/酸会损害线粒.
- 减轻线粒细胞衰变会加剧线粒体损伤和感官运动缺陷.
- 在老年p17/PERMIT-/-小鼠中,LCL768恢复了线粒和改善了感觉运动缺陷.
结论:
- p17/PERMIT/胺介导的线粒细胞衰变在调节神经元代谢和线粒体质量控制方面发挥着至关重要的作用.
- 线粒细胞的变化有助于年龄相关的感觉运动缺陷和神经退行性疾病.
- 用LCL768等药物向线粒菌显示出对包括ALS在内的与年龄有关的神经系统疾病的治疗前景.
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