The functional role of calcineurin in hypertrophy, regeneration, and disorders of skeletal muscle.

The functional role of calcineurin in hypertrophy, regeneration, and disorders of skeletal muscle.
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DOI:
10.1155/2010/721219
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发表时间:
2010
影响因子:
--
通讯作者:
Yamaguchi A
Yamaguchi A
中科院分区:
其他
文献类型:
--
作者:
Sakuma K;Yamaguchi A

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骨骼肌使用钙作为第二信使来响应和适应环境刺激。细胞内钙水平的升高激活钙调神经磷酸酶,一种丝氨酸/苏氨酸磷酸酶,导致一组参与骨骼肌维持、生长和重塑的基因表达。在这篇综述中,我们讨论了钙调神经磷酸酶活性对骨骼肌肥大,再生和疾病的影响。钙调神经磷酸酶是肌肉重塑的有效调节剂,通过肌细胞生成素或MEF 2A的上调和Id 1家族和肌生长抑制素的下调来增强分化。Foxo也可能是肌肉再生过程中钙调磷酸酶信号分子的下游候选者。控制钙调神经磷酸酶的量的策略可能对治疗肌肉疾病如DMD、UCMD和LGMD有效。钙调神经磷酸酶的激活引起慢收缩比目鱼肌而不是快收缩肌的肌肉肥大。
Skeletal muscle uses calcium as a second messenger to respond and adapt to environmental stimuli. Elevations in intracellular calcium levels activate calcineurin, a serine/threonine phosphatase, resulting in the expression of a set of genes involved in the maintenance, growth, and remodeling of skeletal muscle. In this review, we discuss the effects of calcineurin activity on hypertrophy, regeneration, and disorders of skeletal muscle. Calcineurin is a potent regulator of muscle remodeling, enhancing the differentiation through upregulation of myogenin or MEF2A and downregulation of the Id1 family and myostatin. Foxo may also be a downstream candidate for a calcineurin signaling molecule during muscle regeneration. The strategy of controlling the amount of calcineurin may be effective for the treatment of muscular disorders such as DMD, UCMD, and LGMD. Activation of calcineurin produces muscular hypertrophy of the slow-twitch soleus muscle but not fast-twitch muscles.
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