量化方法绘制线粒体专业化和可塑性的地图
Anna S Monzel1, Jack Devine1, Darshana Kapri1
1Division of Behavioral Medicine, Department of Psychiatry, Columbia University Irving Medical Center, New York, NY, USA.
bioRxiv : the preprint server for biology
|February 20, 2025
概括
线粒体表现出不同的分子专业化,称为线粒型. 这项研究引入了一条量化线粒体多样性和可塑性的管道,揭示了在衰老过程中和响应干扰时的组织特异性模式和变化.
科学领域:
- 细胞生物学 细胞生物学
- 线粒体生物学 线粒体生物学
- 系统生物学 系统生物学
背景情况:
- 线粒体是具有多种功能的必不可少的器官,但它们的分子专业化 (线粒体类型) 尚未完全理解.
- 现有的方法缺乏量化方法来评估不同背景下的线粒体多样性.
- 了解线粒体可塑性对于理解细胞功能,衰老和疾病至关重要.
研究的目的:
- 开发和验证用于定义和测量线粒体表型 (线粒体类型) 的定量管道.
- 用转录组学和蛋白质组学数据在各种生物环境中分析线粒体的多样性和可塑性.
- 为研究人员提供一种工具,以探索和解释线粒体专业化.
主要方法:
- 开发了一个使用数百个经过验证的线粒体基因/蛋白质的定量管道.
- 将数据蒸成149个生物学上可解释的MitoPathway分数 (MitoCarta 3.0).
- 将管道应用于来自小鼠和人类组织的转录组学和蛋白质组学数据,以及培养的人类纤维细胞.
主要成果:
- 在小鼠和人类器官中确定了线粒体专业化的两个主要轴,对比了合成体 (肝脏) 和合成体 (大脑) 组织.
- 证明纤维细胞线型型随着时间的推移而变化,与衰老的特征相关.
- 展示了对基因,药物和代谢干扰的反应中的线粒型重新校准.
结论:
- 开发的线粒型定型管道使线粒体多样性和可塑性的定量评估成为可能.
- 线粒体类型分析揭示了线粒体组织间的专业化和衰老过程中的动态变化以及对刺激的反应的根本差异.
- MitotypeExplorer.org为研究人员解释线粒体生物学提供了一个有价值的资源.
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