A novel muscle-specific beta 1 integrin binding protein (MIBP) that modulates myogenic differentiation.

A novel muscle-specific beta 1 integrin binding protein (MIBP) that modulates myogenic differentiation.
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DOI:
10.1083/jcb.147.7.1391
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发表时间:
1999-12-27
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Wu C
Wu C
中科院分区:
其他
文献类型:
--
作者:
Li J;Mayne R;Wu C

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肌生成受细胞粘附受体(包括β1家族的整合素)调节。我们报告了一种新的肌肉特异性β1整合素结合蛋白(MIBP)的鉴定。MIBP与β1A和β1D整联蛋白共有的近膜胞质区结合,并且这种结合在体内和体外都发生。此外,我们表明,MIBP是丰富的C2C12肌源性细胞融合前表达,MIBP的表达显着下调,在随后的分化。最后,我们发现,MIBP在C2C12细胞中的过度表达导致融合和终末分化的抑制,这表明MIBP可能在控制肌肉分化的进展中发挥关键作用。
Myogenesis is regulated by cell adhesion receptors, including integrins of the β1 family. We report the identification of a novel muscle-specific β1 integrin binding protein (MIBP). MIBP binds to the membrane-proximal cytoplasmic region shared by β1A and β1D integrins, and the binding occurs in vivo as well as in vitro. Furthermore, we show that MIBP is abundantly expressed by C2C12 myogenic cells before fusion, and the expression of MIBP is dramatically downregulated during subsequent differentiation. Finally, we show that overexpression of MIBP in C2C12 cells resulted in a suppression of fusion and terminal differentiation, suggesting that MIBP may play a key role in controlling the progression of muscle differentiation.
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影响因子: --
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