Macrophage plasticity and the role of inflammation in skeletal muscle repair.

Macrophage plasticity and the role of inflammation in skeletal muscle repair.
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DOI:
10.1155/2013/491497
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发表时间:
2013
影响因子:
4.6
通讯作者:
Muñoz-Cánoves P
Muñoz-Cánoves P
中科院分区:
医学3区
文献类型:
--
作者:
Kharraz Y;Guerra J;Mann CJ;Serrano AL;Muñoz-Cánoves P

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受损组织和器官的有效修复需要几种细胞类型的协调作用,包括浸润性炎症细胞和驻留细胞。最近的研究发现,巨噬细胞在急性损伤后骨骼肌修复中发挥着重要作用。如果损伤持续存在,如在骨骼肌病理如杜氏肌营养不良症(DMD)中,巨噬细胞浸润持续存在并导致进行性纤维化,从而加剧疾病的严重程度。在这里,我们讨论如何在受损的肌肉组织中的巨噬细胞群体和激活状态的动态变化有助于其有效的再生。我们描述了从M1到M2亚型的巨噬细胞极化的有序变化如何不同地影响肌肉干细胞(卫星细胞)功能。最后,我们还强调了一些新的机制,潜在的巨噬细胞的可塑性,并简要讨论了淋巴细胞和其他炎症细胞类型在正常与病理肌肉修复的新的影响。
Effective repair of damaged tissues and organs requires the coordinated action of several cell types, including infiltrating inflammatory cells and resident cells. Recent findings have uncovered a central role for macrophages in the repair of skeletal muscle after acute damage. If damage persists, as in skeletal muscle pathologies such as Duchenne muscular dystrophy (DMD), macrophage infiltration perpetuates and leads to progressive fibrosis, thus exacerbating disease severity. Here we discuss how dynamic changes in macrophage populations and activation states in the damaged muscle tissue contribute to its efficient regeneration. We describe how ordered changes in macrophage polarization, from M1 to M2 subtypes, can differently affect muscle stem cell (satellite cell) functions. Finally, we also highlight some of the new mechanisms underlying macrophage plasticity and briefly discuss the emerging implications of lymphocytes and other inflammatory cell types in normal versus pathological muscle repair.
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