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Beta-catenin interacts with MyoD and regulates its transcription activity.


ABSTRACT: Wnt regulation of muscle development is thought to be mediated by the beta-catenin-TCF/LEF-dependent canonical pathway. Here we demonstrate that beta-catenin, not TCF/LEF, is required for muscle differentiation. We showed that beta-catenin interacts directly with MyoD, a basic helix-loop-helix transcription factor essential for muscle differentiation and enhances its binding to E box elements and transcriptional activity. MyoD-mediated transactivation is inhibited in muscle cells when beta-catenin is deficient or the interaction between MyoD and beta-catenin is disrupted. These results demonstrate that beta-catenin is necessary for MyoD function, identifying MyoD as an effector in the Wnt canonical pathway.

SUBMITTER: Kim CH 

PROVIDER: S-EPMC2293083 | BioStudies | 2008-01-01

REPOSITORIES: biostudies

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