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p38α MAPK disables KMT1A-mediated repression of myogenic differentiation program.

Skeletal muscle | 2016

Master transcription factor MyoD can initiate the entire myogenic gene expression program which differentiates proliferating myoblasts into multinucleated myotubes. We previously demonstrated that histone methyltransferase KMT1A associates with and inhibits MyoD in proliferating myoblasts, and must be removed to allow differentiation to proceed. It is known that pro-myogenic signaling pathways such as PI3K/AKT and p38α MAPK play critical roles in enforcing associations between MyoD and transcriptional activators, while removing repressors. However, the mechanism which displaces KMT1A from MyoD, and the signals responsible, remain unknown.

Pubmed ID: 27551368 RIS Download

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Associated grants

  • Agency: NIAMS NIH HHS, United States
    Id: R01 AR051502

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