Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA.
Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA; Howard Hughes Medical Institute, Duke University School of Medicine, Durham, NC 27710, USA.
Curr Opin Cell Biol. 2024 Aug;89:102383. doi: 10.1016/j.ceb.2024.102383. Epub 2024 Jun 21.
Dysfunction in mitochondrial maintenance and trafficking is commonly correlated with the development of neurodegenerative disorders such as Parkinson's disease and Alzheimer's disease. Thus, biomedical research has been dedicated to understanding how architecturally complex neurons maintain and transport their mitochondria. However, the systems that coordinate mitochondrial QC (quality control) dynamics and trafficking in response to neuronal activity and stress are less understood. Additionally, the degree of integration between the processes of mitochondrial trafficking and QC is unclear. Recent work indicates that mitochondrial motility modulators (i.e., anchors and tethers) help coordinate mitochondrial health by mediating distinct, stress-level-appropriate QC pathways following mitochondrial damage. This review summarizes current evidence supporting the role of two mitochondrial motility modulators, Syntaphilin and Mitofusin 2, in coordinating mitochondrial QC to promote neuronal health. Exploring motility modulators' intricate regulatory molecular landscape may reveal new therapeutic targets for delaying disease progression and enhancing neuronal survival post-insult.
线粒体维持和运输功能障碍通常与神经退行性疾病(如帕金森病和阿尔茨海默病)的发展相关。因此,生物医学研究致力于了解结构复杂的神经元如何维持和运输它们的线粒体。然而,协调线粒体 QC(质量控制)动力学和运输以响应神经元活动和应激的系统还不太清楚。此外,线粒体运输和 QC 过程之间的整合程度尚不清楚。最近的研究表明,线粒体运动调节剂(即锚定蛋白和系绳蛋白)通过在线粒体损伤后介导不同的、适应应激水平的 QC 途径,有助于协调线粒体健康。这篇综述总结了目前支持两种线粒体运动调节剂——突触磷蛋白和线粒体融合蛋白 2——在协调线粒体 QC 以促进神经元健康方面的作用的证据。探索运动调节剂复杂的调节分子景观可能会揭示新的治疗靶点,以延缓疾病进展并增强损伤后的神经元存活。