Interleukin-6 myokine signaling in skeletal muscle: a double-edged sword?

Interleukin-6 myokine signaling in skeletal muscle: a double-edged sword?
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DOI:
10.1111/febs.12338
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发表时间:
2013-09
期刊:
The FEBS journal
影响因子:
--
通讯作者:
Serrano AL
Serrano AL
中科院分区:
其他
文献类型:
--
作者:
Muñoz-Cánoves P;Scheele C;Pedersen BK;Serrano AL

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白细胞介素(IL)-6是一种在不同组织和器官中具有多效功能的细胞因子。骨骼肌在长时间运动后会产生并释放显着水平的 IL-6,因此被认为是肌因子。肌肉也是细胞因子的重要靶点。 IL-6 信号传导通过调节肌肉干细胞的增殖能力与刺激肥大肌肉生长和肌生成相关。 IL-6 的其他有益作用包括调节能量代谢,这与主动收缩肌肉合成和释放 IL-6 的能力有关。矛盾的是,IL-6 的有害作用也被提出,例如促进萎缩和肌肉萎缩。我们回顾了这些明显矛盾的效应的当前证据、所涉及的机制,并讨论了它们可能的生物学意义。
Interleukin (IL)‐6 is a cytokine with pleiotropic functions in different tissues and organs. Skeletal muscle produces and releases significant levels of IL‐6 after prolonged exercise and is therefore considered as a myokine. Muscle is also an important target of the cytokine. IL‐6 signaling has been associated with stimulation of hypertrophic muscle growth and myogenesis through regulation of the proliferative capacity of muscle stem cells. Additional beneficial effects of IL‐6 include regulation of energy metabolism, which is related to the capacity of actively contracting muscle to synthesize and release IL‐6. Paradoxically, deleterious actions for IL‐6 have also been proposed, such as promotion of atrophy and muscle wasting. We review the current evidence for these apparently contradictory effects, the mechanisms involved and discuss their possible biological implications.
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