Abstract:
:Cell growth and differentiation are opposite events in the myogenic lineage. Growth factors block the muscle differentiation program by inducing the expression of transcription factors that negatively regulate the expression of muscle regulatory genes like MyoD. In contrast, extracellular clues that induce cell cycle arrest promote MyoD expression and muscle differentiation. Thus, the regulation of MyoD expression is critical for muscle differentiation. Here we show that estrogen induces MyoD expression in mouse skeletal muscle in vivo and in dividing myoblasts in vitro by relieving the MyoD promoter from AP-1 negative regulation through a mechanism involving estrogen receptor/AP-1 protein-protein interactions but independent of the estrogen receptor DNA binding activity.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Pedraza-Alva G,Zingg JM,Donda A,Pérez-Martínez Ldoi
10.1016/j.bbrc.2009.08.153subject
Has Abstractpub_date
2009-11-13 00:00:00pages
360-5issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(09)01748-3journal_volume
389pub_type
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