Balancing cell adhesion and Wnt signaling, the key role of beta-catenin
- PMID: 16377174
- DOI: 10.1016/j.gde.2005.12.007
Balancing cell adhesion and Wnt signaling, the key role of beta-catenin
Abstract
Controlled regulation of cell proliferation and differentiation is essential for embryonic development and requires the coordinated regulation of cell-cell adhesion and gene transcription. The armadillo repeat protein beta-catenin is an important integrator of both processes. Beta-catenin acts in the Wnt signaling pathway, activating the transcription of crucial target genes responsible for cellular proliferation and differentiation. Beta-catenin also controls E-cadherin-mediated cell adhesion at the plasma membrane and mediates the interplay of adherens junction molecules with the actin cytoskeleton. Both functions of beta-catenin are de-regulated in human malignancies, thereby leading both to the loss of cell-cell adhesion and to the increased transcription of Wnt target genes.
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