The cellular bases of mobility from the Study of Muscle, Mobility and Aging (SOMMA).

The cellular bases of mobility from the Study of Muscle, Mobility and Aging (SOMMA).
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来自肌肉、活动性和衰老研究 (SOMMA) 的活动性细胞基础。

DOI:
10.1111/acel.14129
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发表时间:
2024
期刊:
影响因子:
7.8
通讯作者:
Ferrucci,Luigi
Ferrucci,Luigi
中科院分区:
生物学1区
文献类型:
--
作者:
Cummings,StevenR;Coen,PaulM;Ferrucci,Luigi

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本期《衰老细胞》中的肌肉、活动性和衰老研究 (SOMMA) 的研究结果表明,骨骼肌细胞中的多种生物途径在决定老年人的活动性方面发挥着重要作用。这些是基于从 SOMMA 中年龄 70 岁及以上的参与者获得的骨骼肌活检分析,测试了与活动能力相关的评估的关联性,包括肌肉质量、力量、爆发力、心肺健康和 400 米步行速度。论文表明,通过质谱分析,对肌细胞功能至关重要的蛋白质的氧化修饰与较差的流动性相关。使用 RNA-seq 量化基因表达,线粒体、自噬、参与自噬的基因表达模式以及随去神经支配而增加的较高水平的 RNA 转录物的表达水平较低,与流动性测试中的较差表现相关。这些结果扩展了巴尔的摩纵向衰老研究的先前研究以及 SOMMA 最近的研究,显示了线粒体能量学在流动性中的重要性。总之,这些发现描绘了基本的细胞过程如何影响随着衰老而丧失的活动能力。它们也可能是了解其他细胞、组织和系统衰老的窗口。 SOMMA 收集的数据是公开的,SOMMA 欢迎与对人类衰老研究感兴趣的科学家合作。
Findings from the Study of Muscle, Mobility and Aging (SOMMA) in this issue of Aging Cell show that several biological pathways in skeletal muscle cells play an important role in determining mobility in older adults. These are based on assays in skeletal muscle biopsies obtained from participants, aged 70 years and older in SOMMA tested for association with assessments related to mobility, including muscle mass, strength, power, cardiopulmonary fitness, and 400 m walking speed. The papers show that, using mass spectrometry, oxidative modifications of proteins essential to myocellular function are associated with poorer mobility. Using RNA‐seq to quantify gene expression, lower levels of expression of antioxidant enzymes located in mitochondria, autophagy, patterns of expression of genes involved in autophagy, and higher levels of RNA transcripts that increase with denervation were associated with poorer performance on tests of mobility. These results extend previous research from the Baltimore Longitudinal Study of Aging and recent studies from SOMMA showing the importance of mitochondrial energetics in mobility. Together, these findings are painting a picture of how fundamental cellular processes influence the loss of mobility with aging. They may also be a window on aging in other cells, tissues, and systems. The data collected in SOMMA are publicly available and SOMMA welcomes collaborations with scientists who are interested in research about human aging.
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