GO:0046588 negative regulation of calcium-dependent cell-cell adhesion: Adhesion Disassembly Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0046588 describes any process that stops, prevents, or reduces the frequency, rate or extent of calcium-dependent cell-cell adhesion.
• Calcium-dependent cell-cell adhesion is primarily mediated by classical cadherins, whose extracellular domains require Ca2+ for homophilic binding.
• Dominant-negative cadherin constructs and alpha-catenin mutants are classic experimental tools that antagonize cadherin function and reduce adhesion.
• Negative regulation of calcium-dependent adhesion is critical in development, tissue remodeling, and cancer progression, where loss of E-cadherin promotes invasion and metastasis.
• TWIST1 upregulation and DNA methylation-induced E-cadherin silencing are established mechanisms that reduce calcium-dependent adhesion in melanoma and brain metastases.
• CDH1 large rearrangements and germline mutations are linked to hereditary breast cancer susceptibility, highlighting the clinical importance of adhesion regulation.
Description
Calcium-dependent cell-cell adhesion is a fundamental process that maintains tissue architecture and integrity. It is mediated primarily by classical cadherins, a family of transmembrane glycoproteins that require calcium ions to form homophilic adhesive bonds between neighboring cells. The Gene Ontology term GO:0046588, negative regulation of calcium-dependent cell-cell adhesion, encompasses any biological process that reduces the frequency, rate, or extent of this adhesion. This regulation is essential for normal development, where dynamic changes in adhesion allow cells to migrate, differentiate, and reorganize tissues. Disruption of this regulatory process is a hallmark of cancer progression, where loss of E-cadherin-mediated adhesion facilitates invasion and metastasis. Understanding the molecular players and mechanisms that negatively regulate calcium-dependent adhesion is therefore critical for both developmental biology and cancer research.
negative regulation of calcium-dependent cell-cell adhesion At A Glance
| GO ID | GO:0046588 |
|---|---|
| GO term | negative regulation of calcium-dependent cell-cell adhesion |
| Ontology | biological_process |
| Synonym | down regulation of calcium-dependent cell-cell adhesion, down-regulation of calcium-dependent cell-cell adhesion, downregulation of calcium-dependent cell-cell adhesion, inhibition of calcium-dependent cell-cell adhesion |
| Major function | Reduces or prevents cadherin-mediated cell-cell adhesion that depends on calcium ions |
| Key molecular players | Classical cadherins (E-cadherin, N-cadherin), catenins (alpha-catenin, beta-catenin, p120 catenin), TWIST1, T-cadherin |
| Associated diseases | Cancer (breast, melanoma, brain metastases), developmental disorders |
| Research methods | Dominant-negative constructs, CRISPR knockout, methylation analysis, live-cell imaging |
What Is GO:0046588?
GO:0046588 is a biological process term defined as any process that stops, prevents, or reduces the frequency, rate or extent of calcium-dependent cell-cell adhesion. In practice, this includes molecular events such as cadherin endocytosis, proteolytic cleavage of cadherin ectodomains, competitive inhibition by dominant-negative cadherin fragments, and transcriptional or epigenetic silencing of cadherin genes. It also encompasses signaling pathways that destabilize the cadherin-catenin complex at the plasma membrane.
Why Is negative regulation of calcium-dependent cell-cell adhesion Important in Cell Biology?
Negative regulation of calcium-dependent cell-cell adhesion is a central mechanism in both normal physiology and disease. During embryonic development, it enables epithelial-to-mesenchymal transitions (EMT) that are required for gastrulation and organ formation. In adult tissues, it contributes to wound healing and tissue remodeling. Pathologically, aberrant downregulation of cadherin-mediated adhesion is a key step in tumor progression, allowing cancer cells to detach from the primary tumor and invade surrounding tissues. Mutations in CDH1, which encodes E-cadherin, are associated with hereditary diffuse gastric cancer and breast cancer susceptibility. Therefore, understanding how this process is regulated offers insights into developmental biology and provides potential therapeutic targets for cancer and other diseases.
• Enables epithelial-to-mesenchymal transition (EMT) during development and cancer progression.
• Facilitates cell migration and tissue remodeling by dynamically weakening adhesion.
• Loss of E-cadherin function is a hallmark of invasive carcinomas.
• CDH1 germline mutations increase susceptibility to hereditary breast and gastric cancers.
• TWIST1-mediated downregulation of E-cadherin promotes brain metastasis.
• DNA methylation of the CDH1 promoter silences E-cadherin in melanoma and correlates with poor prognosis.
• Dominant-negative cadherin constructs are used to study adhesion in osteoblast and osteoclast differentiation.
• p120 catenin regulates actin cytoskeleton and can modulate cadherin stability.
• T-cadherin acts as an antiadhesive molecule in vascular cells.
• Understanding this process aids in designing therapies that target metastasis and developmental disorders.
What Happens During negative regulation of calcium-dependent cell-cell adhesion?
Initiation: Signals that Trigger Adhesion Downregulation
In simple terms: Cells receive signals that tell them to loosen their connections with neighbors.
Negative regulation of calcium-dependent cell-cell adhesion can be initiated by extracellular cues such as growth factors, cytokines, or developmental morphogens. These signals activate intracellular pathways that ultimately target cadherin complexes. For example, TWIST1, a transcription factor induced during EMT, represses E-cadherin expression, leading to reduced adhesion. Similarly, epigenetic modifications such as DNA methylation of the CDH1 promoter can silence E-cadherin transcription, as observed in melanoma. In Xenopus embryos, expression of an alpha-catenin mutant antagonizes cell adhesion and interferes with Wnt signaling, demonstrating that disruption of the cadherin-catenin complex can initiate adhesion loss.
Cadherin Complex Destabilization and Endocytosis
In simple terms: The molecular glue between cells is weakened or removed from the cell surface.
Once triggered, the cadherin-catenin complex at the plasma membrane can be destabilized. p120 catenin, which binds to the juxtamembrane domain of cadherins, regulates cadherin turnover and actin cytoskeleton dynamics through Rho family GTPases. Dominant-negative cadherin constructs, which lack the extracellular adhesive domain, can compete with endogenous cadherins and disrupt adhesion. In osteoclasts, dominant-negative N-cadherin inhibits differentiation by interfering with beta-catenin regulation of RANKL, independent of cell-cell adhesion, showing that cadherin signaling can be uncoupled from adhesion. Endocytosis of cadherins further reduces surface levels and weakens adhesion.
Transcriptional and Epigenetic Silencing of Cadherin Genes
In simple terms: The cell stops producing the proteins that stick cells together.
Long-term negative regulation often involves reduced cadherin gene expression. TWIST1 upregulation represses E-cadherin (CDH1) transcription, promoting brain metastasis. DNA methylation of the CDH1 promoter is a common mechanism of E-cadherin silencing in melanoma, and this methylation correlates with clinicopathological features. Large rearrangements involving intron 2 of CDH1 have been identified in breast cancer susceptibility, further highlighting the importance of CDH1 regulation. These transcriptional and epigenetic changes lead to a stable loss of calcium-dependent adhesion.
Cytoskeletal Remodeling and Adhesion Disassembly
In simple terms: The cell's internal skeleton changes, pulling the adhesion structures apart.
Cadherin-mediated adhesion is tightly linked to the actin cytoskeleton. p120 catenin regulates actin dynamics via Rho GTPases, and its dissociation from cadherins can lead to cytoskeletal rearrangements that destabilize junctions. Alpha-catenin, which links cadherins to actin, is also a target; mutant alpha-catenin antagonizes cell adhesion in Xenopus embryos. Dominant-negative cadherin expression in osteoblasts inhibits differentiation, likely by disrupting cytoskeletal organization and downstream signaling. T-cadherin, an atypical cadherin, lacks the cytoplasmic domain and can act as an antiadhesive molecule in vascular cells. Together, these events lead to the physical separation of cells.
Key Genes Involved in GO:0046588 negative regulation of calcium-dependent cell-cell adhesion
The following genes and proteins are central to the negative regulation of calcium-dependent cell-cell adhesion, based on experimental evidence from the cited literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| CDH1 (E-cadherin) | Calcium-dependent adhesion molecule; its downregulation reduces cell-cell adhesion | Mutations and epigenetic silencing linked to breast, gastric, and melanoma cancers |
| CDH2 (N-cadherin) | Mediates calcium-dependent adhesion in neural and mesenchymal cells | Dominant-negative N-cadherin inhibits osteoclast differentiation |
| CTNNA1 (alpha-catenin) | Links cadherins to actin cytoskeleton; mutant forms antagonize adhesion | Alpha-catenin mutants disrupt adhesion and Wnt signaling in Xenopus |
| CTNNB1 (beta-catenin) | Binds cadherin cytoplasmic domain; involved in Wnt signaling | Dominant-negative N-cadherin interferes with beta-catenin regulation of RANKL |
| CTNND1 (p120 catenin) | Regulates cadherin stability and actin cytoskeleton via Rho GTPases | p120 catenin modulates adhesion dynamics |
| TWIST1 | Transcription factor that represses E-cadherin expression | Upregulation affects E-cadherin in brain metastases |
| CDH13 (T-cadherin) | Atypical cadherin with antiadhesive properties | Acts as an antiadhesive molecule in vascular cells |
| CDH1 promoter | Epigenetic regulation via DNA methylation | Methylation-induced silencing correlates with melanoma features |
| RANKL | Cytokine regulated by beta-catenin; affects osteoclast differentiation | Dominant-negative N-cadherin inhibits osteoclast differentiation via RANKL |
| Rho GTPases | Regulate actin cytoskeleton downstream of p120 catenin | p120 catenin regulates actin via Rho family GTPases |
| Wnt signaling components | Interact with alpha-catenin; modulate adhesion and transcription | Alpha-catenin antagonizes Wnt signaling in Xenopus |
| Osteoblast differentiation markers | Affected by dominant-negative cadherin | Dominant-negative cadherin inhibits osteoblast differentiation |
| BRCA1/2 | Breast cancer susceptibility genes; CDH1 rearrangements found in BRCA1/2 negative patients | Large rearrangements in CDH1 intron 2 in breast cancer |
| Melanoma clinicopathological markers | Correlate with E-cadherin methylation | DNA methylation-induced E-cadherin silencing in melanoma |
| Brain metastasis markers | TWIST1 and E-cadherin expression | TWIST1 upregulation affects E-cadherin in brain metastases |
How Is negative regulation of calcium-dependent cell-cell adhesion Regulated?
The negative regulation of calcium-dependent cell-cell adhesion is controlled at multiple levels. Transcriptional repression of CDH1 by TWIST1 and other EMT-inducing transcription factors reduces cadherin levels. Epigenetic silencing through promoter DNA methylation provides a stable mechanism for long-term downregulation. Post-translational modifications and protein-protein interactions, such as p120 catenin-mediated regulation of cadherin turnover and Rho GTPase signaling, modulate adhesion strength dynamically. Dominant-negative cadherin fragments and alpha-catenin mutants can interfere with the assembly of functional adhesion complexes. Additionally, T-cadherin acts as an antiadhesive molecule in vascular cells, further illustrating the diversity of regulatory mechanisms. These pathways converge to precisely control when and where calcium-dependent adhesion is weakened.
negative regulation of calcium-dependent cell-cell adhesion and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| CDH1 | Hereditary diffuse gastric cancer, breast cancer susceptibility | CRISPR knockout of CDH1 in gastric organoids or breast cancer cell lines |
| TWIST1 | Brain metastasis, EMT | Overexpression of TWIST1 in brain metastatic cell lines |
| CDH13 (T-cadherin) | Vascular disorders, antiadhesive function | Knockout of CDH13 in endothelial cells |
| CTNNA1 | Developmental defects, Wnt signaling | Point mutation of alpha-catenin in Xenopus embryos |
| CTNND1 (p120 catenin) | Cancer, cytoskeletal regulation | Knockdown of p120 catenin in carcinoma cell lines |
Cancer Progression and Metastasis
Loss of calcium-dependent cell-cell adhesion is a critical step in cancer invasion and metastasis. Downregulation of E-cadherin, often through transcriptional repression by TWIST1 or epigenetic silencing, allows cancer cells to detach from the primary tumor and disseminate. In breast cancer, large rearrangements in CDH1 are associated with susceptibility, and CDH1 mutations are linked to hereditary diffuse gastric cancer. Melanoma studies show that DNA methylation-induced E-cadherin silencing correlates with clinicopathological features, suggesting its role as a prognostic marker. Thus, negative regulation of calcium-dependent adhesion is a central mechanism in tumor progression.
Bone Remodeling and Osteoclast/Osteoblast Differentiation
Calcium-dependent adhesion molecules are involved in bone cell differentiation. Dominant-negative N-cadherin inhibits osteoclast differentiation by interfering with beta-catenin regulation of RANKL, independent of cell-cell adhesion. Similarly, a dominant-negative cadherin inhibits osteoblast differentiation, highlighting the importance of cadherin-mediated adhesion in bone formation. These findings suggest that negative regulation of calcium-dependent adhesion can modulate bone remodeling and may be relevant to osteoporosis and other bone diseases.
Developmental Disorders and Embryonic Patterning
During embryonic development, dynamic regulation of calcium-dependent adhesion is essential for morphogenesis. In Xenopus embryos, an alpha-catenin mutant antagonizes cell adhesion and interferes with Wnt signaling, leading to developmental defects. T-cadherin, an antiadhesive molecule, is expressed in vascular cells and may play a role in vascular development. Disruption of these regulatory processes can cause developmental abnormalities, underscoring the importance of precise control over calcium-dependent adhesion.
From negative regulation of calcium-dependent cell-cell adhesion-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does knockout of CDH1 reduce calcium-dependent adhesion? | CRISPR knockout of CDH1 in epithelial cell lines |
| Does a point mutation in alpha-catenin disrupt adhesion? | CRISPR point mutation of CTNNA1 in Xenopus embryos |
| Can overexpression of TWIST1 downregulate E-cadherin? | Overexpression of TWIST1 in melanoma cell lines |
| Does knock-in of a dominant-negative cadherin inhibit osteoblast differentiation? | Knock-in of mutant CDH2 in osteoblast precursors |
| Does p120 catenin regulate actin cytoskeleton via Rho GTPases? | Knockout of CTNND1 in fibroblasts followed by Rho GTPase assays |
| Does T-cadherin act as an antiadhesive molecule? | Overexpression of CDH13 in vascular smooth muscle cells |
How to Study the negative regulation of calcium-dependent cell-cell adhesion Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Live-cell imaging | Dynamics of adhesion complex assembly/disassembly | Visualizing cadherin turnover after TWIST1 induction |
| Bisulfite sequencing | DNA methylation status of CDH1 promoter | Correlating E-cadherin silencing with melanoma features |
| CRISPR knockout screens | Identification of genes affecting adhesion | Discovering novel negative regulators |
| Co-immunoprecipitation | Protein-protein interactions | Studying p120 catenin and Rho GTPase binding |
| Dominant-negative constructs | Functional disruption of cadherin complexes | Inhibiting osteoclast/osteoblast differentiation |
| Alpha-catenin mutant expression | Antagonism of adhesion and Wnt signaling | Xenopus embryo development studies |
| T-cadherin overexpression | Antiadhesive effects in vascular cells | Studying vascular cell behavior |
| RANKL reporter assays | Beta-catenin regulation of RANKL | Osteoclast differentiation studies |
Live-Cell Imaging of Adhesion Dynamics
Live-cell imaging using fluorescently tagged cadherins or catenins allows real-time visualization of adhesion complex assembly and disassembly. This method can quantify changes in adhesion strength and dynamics upon negative regulation, such as after TWIST1 induction or dominant-negative cadherin expression.
DNA Methylation Analysis
Bisulfite sequencing or methylation-specific PCR can detect DNA methylation of the CDH1 promoter, a key mechanism of E-cadherin silencing. This approach is used to correlate methylation status with clinicopathological features in melanoma and other cancers.
CRISPR-Based Genetic Screens
Genome-wide CRISPR knockout or activation screens can identify genes that negatively regulate calcium-dependent adhesion. For example, knocking out candidate genes and measuring adhesion phenotypes can reveal novel regulators. This is particularly useful for discovering pathways that modulate cadherin function.
Protein-Protein Interaction Studies
Co-immunoprecipitation and mass spectrometry can identify proteins that interact with cadherin complexes and regulate their stability. For instance, p120 catenin interactions with Rho GTPases have been elucidated using such methods.
How CRISPR Can Be Used to Study GO:0046588 negative regulation of calcium-dependent cell-cell adhesion
Knockout
CRISPR knockout of genes such as CDH1, CTNNA1, or CTNND1 can abolish their function and reveal their role in calcium-dependent adhesion. For example, knocking out CDH1 in epithelial cells leads to loss of adhesion and increased migration, mimicking cancer progression. Knockout of CTNND1 (p120 catenin) disrupts actin cytoskeleton regulation and cadherin stability.
Point Mutation
CRISPR point mutations can introduce specific amino acid changes that disrupt protein function without completely eliminating expression. For instance, point mutations in CTNNA1 can create dominant-negative alpha-catenin mutants that antagonize adhesion, as seen in Xenopus studies. Such models are valuable for dissecting precise molecular mechanisms.
Knock-in
Knock-in of dominant-negative cadherin constructs or tagged cadherins allows precise control over expression and tracking. For example, knocking in a dominant-negative N-cadherin into osteoclast precursors can inhibit differentiation by interfering with beta-catenin signaling. Tagged knock-ins enable live-cell imaging of cadherin dynamics.
Overexpression
Overexpression of negative regulators such as TWIST1 or T-cadherin can downregulate calcium-dependent adhesion. TWIST1 overexpression represses E-cadherin and promotes brain metastasis, while T-cadherin overexpression acts as an antiadhesive molecule in vascular cells. These models help establish causality and identify downstream effects.
How EDITGENE Supports negative regulation of calcium-dependent cell-cell adhesion Research
Researchers studying negative regulation of calcium-dependent cell-cell adhesion-related genes often need to determine whether a candidate gene is causally involved in adhesion disassembly, whether specific mutations alter protein function, or whether overexpression mimics pathological states. EDITGENE provides comprehensive CRISPR-based services to address these questions with precision and reproducibility.
Contact EDITGENE today to design your custom CRISPR model for negative regulation of calcium-dependent cell-cell adhesion research.
Frequently Asked Questions About negative regulation of calcium-dependent cell-cell adhesion
What is GO:0046588?
GO:0046588 is a Gene Ontology biological process term defined as any process that stops, prevents, or reduces the frequency, rate or extent of calcium-dependent cell-cell adhesion.
What genes are involved in negative regulation of calcium-dependent cell-cell adhesion?
Key genes include CDH1 (E-cadherin), CDH2 (N-cadherin), CTNNA1 (alpha-catenin), CTNNB1 (beta-catenin), CTNND1 (p120 catenin), TWIST1, and CDH13 (T-cadherin).
How does TWIST1 affect E-cadherin?
TWIST1 upregulation represses E-cadherin expression, leading to reduced calcium-dependent adhesion and promoting brain metastasis.
What is the role of DNA methylation in E-cadherin silencing?
DNA methylation of the CDH1 promoter silences E-cadherin transcription, and this methylation correlates with clinicopathological features in melanoma.
Can dominant-negative cadherin inhibit osteoblast differentiation?
Yes, a dominant-negative cadherin inhibits osteoblast differentiation, demonstrating the importance of cadherin-mediated adhesion in bone formation.
What is the link between CDH1 mutations and breast cancer?
Large rearrangements involving intron 2 of CDH1 have been identified in BRCA1/2 negative breast cancer susceptibility, and CDH1 mutations are linked to hereditary diffuse gastric cancer.
How does p120 catenin regulate adhesion?
p120 catenin regulates the actin cytoskeleton via Rho family GTPases and modulates cadherin stability at the plasma membrane.
What is T-cadherin and how does it affect adhesion?
T-cadherin (CDH13) is an atypical cadherin that acts as an antiadhesive molecule in vascular cells, lacking the cytoplasmic domain typical of classical cadherins.
What experimental models are used to study negative regulation of calcium-dependent adhesion?
Common models include CRISPR knockout of CDH1 or CTNND1, dominant-negative cadherin expression, alpha-catenin mutants in Xenopus, and overexpression of TWIST1 or T-cadherin.
Why is negative regulation of calcium-dependent cell-cell adhesion important in cancer?
It allows cancer cells to detach from the primary tumor and invade, a critical step in metastasis, often through loss of E-cadherin.
Conclusion
The negative regulation of calcium-dependent cell-cell adhesion (GO:0046588) is a vital biological process that controls tissue architecture, development, and disease progression. Key mechanisms include transcriptional repression, epigenetic silencing, and protein-level disruption of cadherin complexes. Understanding these pathways provides insights into cancer metastasis, bone remodeling, and developmental disorders. Researchers can leverage CRISPR-based models to dissect these mechanisms and identify new therapeutic targets.
References
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- 2. Brlek P et al.. 2021. TWIST1 upregulation affects E-cadherin expression in brain metastases.. Clin Transl Oncol 23(6):1085-1095 PMID: 33006113
- 3. Sehgal RN et al.. 1997. Antagonism of cell adhesion by an alpha-catenin mutant, and of the Wnt-signaling pathway by alpha-catenin in Xenopus embryos.. J Cell Biol 139(4):1033-46 PMID: 9362521
- 4. Ben Aissa-Haj J et al.. 2022. The Identification of Large Rearrangements Involving Intron 2 of the CDH1 Gene in BRCA1/2 Negative and Breast Cancer Susceptibility.. Genes (Basel) 13(12) PMID: 36553480
- 5. Cheng SL et al.. 2000. A dominant negative cadherin inhibits osteoblast differentiation.. J Bone Miner Res 15(12):2362-70 PMID: 11127201
- 6. Venza M et al.. 2016. DNA methylation-induced E-cadherin silencing is correlated with the clinicopathological features of melanoma.. Oncol Rep 35(4):2451-60 PMID: 26883095
- 7. Noren NK et al.. 2000. p120 catenin regulates the actin cytoskeleton via Rho family GTPases.. J Cell Biol 150(3):567-80 PMID: 10931868
- 8. Rubina KA et al.. 2004. [Antiadhesive molecule T-cadherin is an atypical low-density lipoprotein receptor in vascular cells].. Ross Fiziol Zh Im I M Sechenova 90(8):968-86 PMID: 15552364
