Short-term calorie restriction enhances skeletal muscle stem cell function.

Short-term calorie restriction enhances skeletal muscle stem cell function.
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DOI:
10.1016/j.stem.2012.04.002
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发表时间:
2012-05-04
期刊:
影响因子:
23.9
通讯作者:
Wagers, Amy J.
Wagers, Amy J.
中科院分区:
医学1区
文献类型:
--
作者:
Cerletti, Massimiliano;Jang, Young C.;Finley, Lydia W. S.;Haigis, Marcia C.;Wagers, Amy J.

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热量限制(CR)延长了寿命,并改善了大多数物种的年龄相关的病理研究,但这些影响的机制仍不清楚。使用小鼠骨骼肌作为模型,我们表明CR部分通过增强组织特异性干细胞的功能发挥作用。即使是短期CR也显著增强了年轻和老年动物肌肉中干细胞的可用性和活性,同时增加了线粒体丰度并诱导了保守的代谢和寿命调节因子。此外,CR增强了内源性肌肉修复,并且在供体或受体动物中启动的CR改善了供体细胞在移植后再生肌肉的贡献。这些研究表明,代谢因子在调节干细胞功能中起着关键作用,并且这种调节可以影响从损伤中恢复的功效和移植细胞的植入。
Calorie restriction (CR) extends lifespan and ameliorates age-related pathologies in most species studied; yet the mechanisms underlying these effects remain unclear. Using mouse skeletal muscle as a model, we show that CR acts in part by enhancing the function of tissue-specific stem cells. Even short-term CR significantly enhanced stem cell availability and activity in the muscle of young and old animals, in concert with an increase in mitochondrial abundance and induction of conserved metabolic and longevity regulators. Moreover, CR enhanced endogenous muscle repair and CR initiated in either donor or recipient animals improved the contribution of donor cells to regenerating muscle following transplant. These studies indicate that metabolic factors play a critical role in regulating stem cell function and that this regulation can influence the efficacy of recovery from injury and the engraftment of transplanted cells.
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发表时间: 2009-03-06
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