Transforming growth factor-beta-regulated miR-24 promotes skeletal muscle differentiation.
Transforming growth factor-beta-regulated miR-24 promotes skeletal muscle differentiation.
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转化生长因子-β 调节的 miR-24 促进骨骼肌分化。
DOI:
10.1093/nar/gkn032
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发表时间:
2008-05
影响因子:
14.9
通讯作者:
Yang X
中科院分区:
文献类型:
--
作者:
Sun Q;Zhang Y;Yang G;Chen X;Zhang Y;Cao G;Wang J;Sun Y;Zhang P;Fan M;Shao N;Yang X
MicroRNAs (miRNAs) have recently been proposed as a versatile class of molecules involved in regulation of a variety of biological processes. However, the role of miRNAs in TGF-β-regulated biological processes is poorly addressed. In this study, we found that miR-24 was upregulated during myoblast differentiation and could be inhibited by TGF-β1. Using both a reporter assay and Northern blot analysis, we showed that TGF-β1 repressed miR-24 transcription which was dependent on the presence of Smad3 and a Smads binding site in the promoter region of miR-24. TGF-β1 was unable to inhibit miR-24 expression in Smad3-deficient myoblasts, which exhibited accelerated myogenesis. Knockdown of miR-24 led to reduced expression of myogenic differentiation markers in C2C12 cells, while ectopic expression of miR-24 enhanced differentiation, and partially rescued inhibited myogenesis by TGF-β1. This is the first study demonstrating a critical role for miRNAs in modulating TGF-β-dependent inhibition of myogenesis, and provides a novel mechanism of the genetic regulation of TGF-β signaling during skeletal muscle differentiation.
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DOI:
10.1083/jcb.200603008
发表时间:
2006-08-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
Kim HK;Lee YS;Sivaprasad U;Malhotra A;Dutta A
通讯作者:
Dutta A
影响因子:
2.7
作者:
Amthor, H;Huang, RJ;Patel, K
通讯作者:
Patel, K
影响因子:
10.5
作者:
Liu, D;Black, BL;Derynck, R
通讯作者:
Derynck, R
影响因子:
16
作者:
Lu, JR;McKinsey, TA;Olson, EN
通讯作者:
Olson, EN
影响因子:
3.1
作者:
Callis, Thomas E.;Chen, Jian-Fu;Wan, Da-Zhi
通讯作者:
Wan, Da-Zhi