Related Experiment Video
Updated: Jun 2, 2026

08:15
Bead Aggregation Assays for the Characterization of Putative Cell Adhesion Molecules
Published on: October 17, 2014
beta-catenin-cell adhesion and beyond (review).
International Journal of Oncology
|April 30, 2011
Summary
Beta-catenin, a protein regulating cell adhesion, also mediates intracellular pathways involved in cell growth and proliferation. Its role in tumor progression is under investigation due to its association with tumor suppressor genes.
Area of Science:
- Cell biology
- Molecular biology
- Cancer research
Background:
- Beta-catenin was initially identified as a key component of the cadherin cell-cell adhesion complex.
- Emerging evidence highlights cadherin-independent roles for beta-catenin within the cell.
Purpose of the Study:
- To elucidate the multifaceted roles of beta-catenin beyond cell adhesion.
- To investigate beta-catenin's involvement in intracellular signaling pathways.
- To explore the potential implications of beta-catenin in tumor progression.
Main Methods:
- Analysis of beta-catenin's interactions with cadherins and other signaling molecules.
- Investigation of beta-catenin's role in Wnt-1, src, and Tcf-Lef mediated pathways.
- Examination of beta-catenin's association with tumor suppressor proteins like APC.
Main Results:
- Identified intracellular beta-catenin pools independent of cadherin interactions.
- Demonstrated beta-catenin's crucial role in Wnt-1, src, and Tcf-Lef signaling cascades.
- Highlighted the association of beta-catenin with APC, a tumor suppressor, suggesting a role in tumorigenesis.
Conclusions:
- Beta-catenin functions as a dual regulator, controlling both cell-cell adhesion and intracellular signaling.
- Beta-catenin mediates pathways critical for cell growth and proliferation.
- Beta-catenin's interactions suggest its involvement in the complex processes of tumor development and progression.
Related Concept Videos
Catenins
Catenins are characterized by multiple binding domains and dynamic structures that allow them to function as linker proteins in cell junction complexes. All catenins, except α-catenin, contain a characteristic protein sequence called the armadillo repeat and are therefore also called armadillo proteins.
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the adherens...
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the adherens...
Tension Response at Adherens Junctions
The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin homology) domains...
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin homology) domains...
Cadherins in Tissue Organization
The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
Cell Sorting During Development
Cell sorting plays an...
Cell Sorting During Development
Cell sorting plays an...
Intracellular Signaling Affects Focal Adhesions
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
Adherens Junctions
Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types – adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
Adherens Junctions are Dynamic
The endothelial cells...
Adherens Junctions are Dynamic
The endothelial cells...
Overview of Cell-Matrix Interactions
The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...

