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Wnt/β-catenin signaling in development and cancer
Research Guide
What is Wnt/β-catenin signaling in development and cancer?
Wnt/β-catenin signaling is a conserved pathway that regulates cell proliferation, differentiation, and polarity during embryonic development and is frequently dysregulated in diseases including cancer.
The pathway involves Wnt ligands binding to receptors, stabilizing β-catenin, which translocates to the nucleus to activate transcription factors. There are 37,828 papers on Wnt/β-catenin signaling in development and cancer. Components and mechanisms have been detailed across thousands of studies linking the pathway to stem cell maintenance and tumorigenesis.
Topic Hierarchy
Research Sub-Topics
Wnt/β-Catenin Pathway Components and Regulation
Researchers dissect canonical Wnt signaling machinery, including Frizzled receptors, LRP5/6 co-receptors, and Dishevelled scaffolds, alongside GSK-3β phosphorylation dynamics. Studies elucidate post-translational modifications and feedback loops modulating pathway activity.
Wnt/β-Catenin in Embryonic Development
This sub-topic covers Wnt's roles in axis formation, gastrulation, and organogenesis, with emphasis on β-catenin nuclear translocation in progenitor specification. Model organism studies reveal dosage-dependent effects and tissue-specific functions.
Wnt/β-Catenin Signaling in Stem Cell Maintenance
Investigations focus on Wnt-driven self-renewal in intestinal crypts, hematopoietic, and neural stem cells via Lgr5+ populations and YAP/TAZ crosstalk. Researchers probe niche interactions and asymmetric division control.
Wnt/β-Catenin Deregulation in Colorectal Cancer
Studies analyze APC mutations, β-catenin stabilizing mutations, and c-Myc transcriptional targets driving oncogenesis in colorectal tumors. Work includes tumor microenvironment influences and metastasis promotion.
Wnt/β-Catenin in Osteoblast Differentiation
Researchers examine canonical Wnt promotion of Runx2 expression and bone formation via β-catenin/TCF complexes in mesenchymal precursors. Studies link pathway variants to osteoporosis and sclerosteosis pathologies.
Why It Matters
Wnt/β-catenin signaling drives intestinal stem cell renewal, as shown by Barker et al. (2007) identifying Lgr5 as a marker for stem cells in small intestine and colon. Dysregulation promotes cancer progression through epithelial-mesenchymal transition (EMT), with Kalluri and Weinberg (2009) demonstrating EMT's role in tumor invasiveness and metastasis, and Thiery (2002) linking EMT to tumour progression. In colorectal cancer, APC mutations cause β-catenin accumulation that activates c-MYC transcription, per He et al. (1998), contributing to tumorigenesis.
Reading Guide
Where to Start
'Wnt/β-Catenin Signaling: Components, Mechanisms, and Diseases' by MacDonald et al. (2009), as it provides a clear breakdown of pathway architecture and core mechanisms before tackling disease contexts.
Key Papers Explained
Clevers (2006) in 'Wnt/β-Catenin Signaling in Development and Disease' establishes foundational roles in development; MacDonald et al. (2009) in 'Wnt/β-Catenin Signaling: Components, Mechanisms, and Diseases' details molecular components building on Clevers; Logan and Nusse (2004) in 'THE WNT SIGNALING PATHWAY IN DEVELOPMENT AND DISEASE' integrates genetics and biochemistry; Clevers and Nusse (2012) in 'Wnt/β-Catenin Signaling and Disease' extends to pathologies, synthesizing prior mechanistic insights.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Recent works emphasize Wnt's integration with EMT (Kalluri and Weinberg, 2009; Thiery, 2002) and stem cells (Barker et al., 2007), with APC-c-MYC links (He et al., 1998) highlighting therapeutic targets in colorectal cancer.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | The basics of epithelial-mesenchymal transition | 2009 | Journal of Clinical In... | 9.9K | ✓ |
| 2 | Epithelial–mesenchymal transitions in tumour progression | 2002 | Nature reviews. Cancer | 6.6K | ✕ |
| 3 | Identification of stem cells in small intestine and colon by m... | 2007 | Nature | 5.6K | ✕ |
| 4 | Role of YAP/TAZ in mechanotransduction | 2011 | Nature | 5.5K | ✓ |
| 5 | Wnt/β-Catenin Signaling in Development and Disease | 2006 | Cell | 5.5K | ✓ |
| 6 | Wnt/β-Catenin Signaling: Components, Mechanisms, and Diseases | 2009 | Developmental Cell | 5.5K | ✓ |
| 7 | Wnt/β-Catenin Signaling and Disease | 2012 | Cell | 5.4K | ✓ |
| 8 | THE WNT SIGNALING PATHWAY IN DEVELOPMENT AND DISEASE | 2004 | Annual Review of Cell ... | 5.2K | ✕ |
| 9 | Inhibition of glycogen synthase kinase-3 by insulin mediated b... | 1995 | Nature | 5.2K | ✕ |
| 10 | Identification of c- <i>MYC</i> as a Target of the APC Pathway | 1998 | Science | 4.5K | ✕ |
Frequently Asked Questions
What are the key components of Wnt/β-catenin signaling?
Key components include Wnt ligands, Frizzled and LRP5/6 receptors, the destruction complex with Axin, APC, GSK-3, and CK1, and β-catenin as the central effector. Upon Wnt binding, the destruction complex is inhibited, stabilizing β-catenin for nuclear translocation and TCF/LEF-mediated transcription. MacDonald et al. (2009) outlined these in 'Wnt/β-Catenin Signaling: Components, Mechanisms, and Diseases'.
How does Wnt/β-catenin signaling function in development?
Wnt/β-catenin signaling controls cell fate decisions, patterning, and organ formation during embryogenesis. Logan and Nusse (2004) described its mediation of cell-cell communication in 'THE WNT SIGNALING PATHWAY IN DEVELOPMENT AND DISEASE'. Clevers (2006) reviewed its roles in tissue homeostasis and stem cell regulation in 'Wnt/β-Catenin Signaling in Development and Disease'.
What is the role of Wnt/β-catenin in cancer?
Aberrant activation leads to uncontrolled proliferation and metastasis via targets like c-MYC. He et al. (1998) identified c-MYC as a target of the APC pathway in 'Identification of c-MYC as a Target of the APC Pathway'. Clevers and Nusse (2012) detailed disease associations in 'Wnt/β-Catenin Signaling and Disease'.
How does GSK-3 regulate Wnt/β-catenin signaling?
GSK-3 phosphorylates β-catenin in the destruction complex, targeting it for degradation. Insulin inhibits GSK-3 via PKB, stabilizing β-catenin, as shown by Cross et al. (1995) in 'Inhibition of glycogen synthase kinase-3 by insulin mediated by protein kinase B'. This links metabolic signals to pathway activity.
What connects Wnt/β-catenin to epithelial-mesenchymal transition?
Wnt/β-catenin drives EMT, enabling tumor invasion. Kalluri and Weinberg (2009) explained mesenchymal cell origins in tissue fibrosis and cancer in 'The basics of epithelial-mesenchymal transition'. Thiery (2002) linked EMT to tumour progression in 'Epithelial–mesenchymal transitions in tumour progression'.
Open Research Questions
- ? How do context-specific co-factors modulate β-catenin transcriptional outputs in different tissues?
- ? What mechanisms allow Wnt/β-catenin pathway reactivation in metastatic cancers despite targeted inhibition?
- ? How does Wnt/β-catenin integrate with YAP/TAZ mechanotransduction to regulate stem cell fate?
- ? What are the precise roles of Lgr5+ stem cells in Wnt-driven intestinal regeneration versus tumorigenesis?
- ? How do APC mutations alter destruction complex dynamics beyond β-catenin stabilization?
Recent Trends
The field encompasses 37,828 papers with sustained high citations for reviews like Clevers , MacDonald et al. (2009), and Clevers and Nusse (2012), each over 5,000 citations, reflecting ongoing focus on core mechanisms amid no new preprints or news in the last year.
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