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Target intelligence / Profile preview
Catenin beta-1 (CTNNB1)
- Target
- CTNNB1
- Molecular classification
- Catenin family, Transcription factor coactivator
01
Overview
Catenin beta-1 (CTNNB1) is a dual-function protein involved in cell adhesion and Wnt signaling. It's a key component of adherens junctions, connecting cadherins to the actin cytoskeleton. In the Wnt pathway, it acts as a transcriptional coactivator for TCF/LEF transcription factors upon Wnt stimulation, promoting cell proliferation and differentiation. Dysregulation of CTNNB1, often through mutations preventing its degradation, is implicated in various cancers, making it an important oncogene. It also plays a role in cardiac disease. Targeting CTNNB1 therapeutically is challenging due to its critical roles in normal cellular processes.
- Other names
- Beta-catenin
02
Mechanism of action
As a transcription factor, mechanism would involve disrupting interaction with TCF/LEF, preventing nuclear accumulation, or promoting degradation via the destruction complex.
03
Biological functions
Cell adhesionSignal transductionWnt signaling pathway regulationRegulation of cell proliferationRegulation of cell differentiationEmbryonic developmentTissue morphogenesis
04
Disease associations
CancerColorectal carcinomaHepatocellular carcinomaLung cancerBreast cancerOvarian cancerEndometrial cancerMedulloblastomaDesmoid tumorsCardiac diseaseDilated cardiomyopathyPilomatrixomaSkin cancersThyroid cancer
05
Safety considerations
Inhibition of Wnt signaling can have developmental consequences.Excessive inhibition of beta-catenin can disrupt normal tissue homeostasis.Potential for off-target effects due to the widespread role of beta-catenin.
06
Biomarkers
CTNNB1 mutationsBeta-catenin protein levels (cytoplasmic/nuclear)Expression of Wnt target genes (e.g., cyclin D, c-myc)
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