GO:0098609 cell-cell adhesion: Mechanism, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0098609 cell-cell adhesion is the biological process by which one cell attaches to another cell via adhesion molecules.
• It is mediated by specialized junctional complexes, including tight junctions, adherens junctions, desmosomes and gap junctions, which are dynamically linked to the actin and intermediate filament cytoskeletons.
• Cell-cell adhesion is not a static glue: it is a mechanosensitive signaling hub that converts mechanical forces into biochemical signals through crosstalk with cell-matrix adhesion complexes.
• Adhesion molecules such as cadherins, immunoglobulin superfamily members (e.g. ALCAM/CD166) and integrins are frequently deregulated in cancer, where they drive invasion, metastasis and immune evasion.
• Loss or mutation of cell-cell adhesion components is linked to endometrial cancer, endothelial disease and impaired tissue regeneration.
• CRISPR knockout, point-mutation, knock-in and overexpression models, combined with CRISPR library screening and bioinformatics, are core tools for dissecting cell-cell adhesion gene function.
Description
Cell-cell adhesion (GO:0098609) is the biological process by which one cell attaches to another cell via adhesion molecules. This process is fundamental to the architecture of multicellular organisms, providing the physical cohesion that holds tissues together while simultaneously serving as a signaling platform that instructs cell fate, migration and survival. The QuickGO definition captures its essence: the attachment of one cell to another cell via adhesion molecules. Researchers study GO:0098609 because it sits at the intersection of tissue morphogenesis, barrier function, mechanotransduction and disease progression. At the molecular level, cell-cell adhesion is executed by transmembrane adhesion receptors, including cadherins, immunoglobulin superfamily members such as ALCAM/CD166, and junctional proteins that connect to the cytoskeleton. These receptors do not act in isolation; they form multiprotein complexes that crosstalk with cell-matrix adhesion and mechanotransduction machinery. This crosstalk allows cells to sense and respond to mechanical forces, a property that is essential for tissue regeneration and homeostasis. Dysregulation of cell-cell adhesion is a hallmark of many human diseases. In cancer, altered expression of adhesion molecules such as ALCAM/CD166 and migfilin promotes invasion and metastasis. In endometrial cancer, cell adhesion molecules have been systematically reviewed as diagnostic and prognostic candidates. In endothelial cells, integrin-dependent adhesion is critical for vascular health and disease. Understanding GO:0098609 therefore has direct translational relevance for oncology, regenerative medicine and vascular biology.
cell-cell adhesion At A Glance
| GO ID | GO:0098609 |
|---|---|
| GO term | cell-cell adhesion |
| Ontology | biological_process |
| Synonym | single organismal cell-cell adhesion |
| Definition | The attachment of one cell to another cell via adhesion molecules. |
| Major function | Physical cohesion of cells and mechanosensitive signaling in tissues |
| Key molecular players | Cadherins, immunoglobulin superfamily members (e.g. ALCAM/CD166), junctional adaptors, integrins |
| Associated diseases | Cancer (endometrial, metastatic), endothelial disease, impaired tissue regeneration |
| Research methods | CRISPR KO/point mutation/knock-in/overexpression, CRISPR library screening, imaging, proteomics |
What Is GO:0098609?
In simple terms, GO:0098609 cell-cell adhesion is the process by which a cell sticks to a neighboring cell using specialized surface molecules. The official QuickGO definition is: The attachment of one cell to another cell via adhesion molecules. This process is distinct from cell-matrix adhesion, although the two systems communicate extensively. Cell-cell adhesion is mediated by transmembrane receptors that engage in homophilic or heterophilic interactions across the intercellular space, and these receptors are anchored intracellularly to the cytoskeleton through adaptor proteins. The synonym single organismal cell-cell adhesion emphasizes that this process occurs within one organism and is not a pathogen-host interaction.
Why Is cell-cell adhesion Important in Cell Biology?
GO:0098609 cell-cell adhesion is important because it governs tissue integrity, barrier function and mechanotransduction, and its disruption is causally linked to cancer progression, vascular disease and regenerative failure. Because adhesion complexes are dynamic and mechanosensitive, they represent actionable targets for experimental perturbation and therapeutic intervention.
• Maintains tissue architecture by physically linking cells through junctional complexes.
• Acts as a mechanosensor that converts mechanical cues into biochemical signals.
• Regulates cell migration and invasion, key steps in cancer metastasis.
• Is frequently altered in endometrial cancer and other malignancies.
• Controls endothelial barrier function and vascular health.
• Supports tissue regeneration in response to mechanical stretching.
• Provides a signaling hub that crosstalks with cell-matrix adhesion.
• Involves immunoglobulin superfamily members such as ALCAM/CD166 that modulate adhesion and migration.
• Includes migfilin, a component with cell adhesion effects and comorbidities.
• Is a rich source of candidate biomarkers and drug targets.
What Happens During cell-cell adhesion?
Initiation and receptor engagement
In simple terms: Cells first reach out and touch each other using adhesion molecules on their surfaces.
Cell-cell adhesion begins when transmembrane adhesion receptors on opposing cells engage in homophilic or heterophilic binding. Immunoglobulin superfamily members such as ALCAM/CD166 participate in these initial recognition events, and their modulation can alter adhesion and migration. Migfilin is also implicated in cell adhesion effects and associated comorbidities. This step is highly dynamic and is influenced by the local mechanical environment.
Junctional complex assembly
In simple terms: Once receptors touch, they cluster into specialized junctions that seal and organize the contact.
Following receptor engagement, adhesion molecules cluster into organized junctional complexes, including tight junctions, adherens junctions and desmosomes. New aspects of cell adhesion at tight junctions have been reviewed, highlighting their roles beyond barrier function. These complexes are linked to the cytoskeleton and are essential for mechanical stability.
Cytoskeletal coupling and mechanotransduction
In simple terms: The adhesion contact is connected to the cell's internal skeleton, allowing forces to be sensed and transmitted.
Intracellular adaptor proteins connect adhesion receptors to actin and intermediate filaments, enabling force transmission. Crosstalk between cell-cell and cell-matrix adhesion complexes regulates mechanotransduction, converting mechanical forces into biochemical signals. Tissue regeneration from mechanical stretching of cell-cell adhesion demonstrates the functional importance of this coupling.
Dynamic remodeling and crosstalk
In simple terms: Adhesion contacts are not permanent; they are constantly remodeled and communicate with other adhesion systems.
Cell-cell adhesion complexes undergo continuous remodeling, and they crosstalk with integrin-dependent cell-matrix adhesion. Integrin-dependent adhesion in endothelial health and disease illustrates how these systems cooperate. The role and regulation of integrins in cell migration and invasion further highlights the integration of adhesion signaling.
Pathological disruption
In simple terms: When adhesion goes wrong, cells can detach, migrate inappropriately, or lose tissue organization.
Disruption of cell-cell adhesion is associated with cancer progression, including endometrial cancer where cell adhesion molecules have been systematically reviewed. ALCAM/CD166 modulation affects adhesion and migration, contributing to metastatic behavior. Migfilin dysregulation has been linked to comorbidities.
Key Genes Involved in GO:0098609 cell-cell adhesion
The following genes and proteins are central to cell-cell adhesion (GO:0098609) and are frequently studied using CRISPR-based models.
| Gene | Major Role | Research Relevance |
|---|---|---|
| CDH1 | Core adherens junction cadherin | Epithelial integrity and cancer invasion |
| CDH2 | Neural cadherin mediating adhesion | Neuronal and mesenchymal adhesion |
| ALCAM | Immunoglobulin superfamily adhesion molecule | Modulates adhesion and migration in metastasis |
| CTNNB1 | Links cadherins to actin cytoskeleton | Adherens junction signaling |
| CTNNA1 | Cadherin-catenin complex component | Junctional assembly and mechanotransduction |
| JUP | Desmosomal and adherens junction protein | Tissue cohesion |
| DSP | Desmosomal cadherin-associated protein | Mechanical resilience |
| TJP1 | Tight junction scaffold protein | Barrier function and tight junction adhesion |
| OCLN | Tight junction transmembrane protein | Epithelial barrier |
| CLDN1 | Tight junction claudin | Paracellular sealing |
| ITGB1 | Integrin beta subunit | Cell-matrix adhesion crosstalk |
| ITGAV | Integrin alpha V subunit | Endothelial adhesion and migration |
| FERMT2 | Migfilin, links adhesion to cytoskeleton | Cell adhesion effects and comorbidities |
| VCL | Vinculin, actin-binding adhesion protein | Mechanotransduction |
| TLN1 | Talin, integrin activator | Adhesion complex dynamics |
| PXN | Paxillin, focal adhesion adaptor | Adhesion signaling |
| ACTN1 | Actinin, actin crosslinker | Cytoskeletal coupling |
How Is cell-cell adhesion Regulated?
Cell-cell adhesion is regulated at multiple levels, including transcriptional control of adhesion molecule expression, post-translational modifications, and mechanical feedback. Crosstalk between cell adhesion complexes and mechanotransduction pathways modulates junctional stability. Integrin-dependent signaling in endothelial cells is dynamically regulated in health and disease. The immunoglobulin superfamily member ALCAM/CD166 is subject to modulation that affects adhesion and migration. Migfilin regulation has been linked to cell adhesion effects and comorbidities. Tight junction adhesion is also regulated by new and emerging mechanisms.
cell-cell adhesion and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| CDH1 | Epithelial cancer, invasion | CRISPR knockout in cancer cell lines |
| ALCAM | Metastasis, migration | Overexpression and knockout models |
| FERMT2 | Cell adhesion comorbidities | Point mutation knock-in |
| ITGB1 | Endothelial disease | Endothelial-specific knockout |
| TJP1 | Barrier dysfunction | Knockout and rescue |
Cancer and metastasis
Altered cell-cell adhesion is a hallmark of cancer. In endometrial cancer, cell adhesion molecules have been systematically reviewed as potential biomarkers and therapeutic targets. ALCAM/CD166 modulation promotes adhesion and migration changes associated with metastasis. Migfilin dysregulation has been linked to comorbidities in cancer. Integrins also play key roles in cell migration and invasion.
Endothelial and vascular disease
Integrin-dependent cell-matrix adhesion is critical for endothelial health and disease, and crosstalk with cell-cell adhesion influences vascular barrier function. Disruption of these adhesion systems contributes to vascular pathology.
Tissue regeneration and mechanobiology
Mechanical stretching of cell-cell adhesion can promote tissue regeneration, highlighting the therapeutic potential of targeting adhesion complexes. Mechanotransduction crosstalk between adhesion systems is central to this process.
Other adhesion-related pathologies
Migfilin has been associated with cell adhesion effects and comorbidities beyond cancer. Tight junction adhesion defects are linked to barrier dysfunction in multiple tissues.
From cell-cell adhesion-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is a gene required for cell-cell adhesion? | CRISPR knockout |
| Does a specific mutation alter adhesion? | Point mutation knock-in |
| Can a tagged protein track adhesion dynamics? | Tagged knock-in |
| Does overexpression drive migration? | Overexpression |
| Which genes regulate adhesion globally? | CRISPR library screening |
| How does adhesion respond to force? | Mechanical stretching models |
How to Study the cell-cell adhesion Process
| Method | What It Measures | Typical Application |
|---|---|---|
| CRISPR knockout | Loss-of-function phenotype | Adhesion gene requirement |
| Point mutation knock-in | Specific residue function | Mechanism of adhesion proteins |
| Tagged knock-in | Protein localization and dynamics | Live imaging of adhesion |
| Overexpression | Gain-of-function effects | Migration and invasion |
| CRISPR library screening | Global genetic dependencies | Adhesion regulator discovery |
| Mechanical stretching | Force response | Tissue regeneration |
| Proteomics | Protein interactions | Adhesion complex composition |
CRISPR-based genetic perturbation
CRISPR knockout, point mutation, knock-in and overexpression are used to dissect the function of adhesion genes. These approaches allow causal testing of candidate genes identified from reviews of cell adhesion molecules and immunoglobulin superfamily members.
Imaging and junctional analysis
High-resolution imaging of tight junctions and adherens junctions reveals how adhesion complexes assemble and remodel. Live-cell imaging of tagged adhesion proteins can track dynamics.
Mechanobiology assays
Mechanical stretching and force measurements are used to study mechanotransduction at cell-cell adhesion sites. These assays link adhesion to tissue regeneration.
Proteomics and interactomics
Proteomic analysis of adhesion complexes identifies novel components and crosstalk with integrin-dependent adhesion. This helps map the adhesion network.
How CRISPR Can Be Used to Study GO:0098609 cell-cell adhesion
Knockout
CRISPR knockout of adhesion genes such as CDH1 or TJP1 is used to test their requirement for cell-cell adhesion and barrier function.
Point Mutation
Point mutation knock-in can model disease-associated variants in adhesion molecules and reveal residue-specific functions.
Knock-in
Tagged knock-in of genes like ALCAM allows visualization of adhesion dynamics in live cells.
Overexpression
Overexpression of adhesion molecules such as integrins or ALCAM is used to study gain-of-function effects on migration and invasion.
How EDITGENE Supports cell-cell adhesion Research
Researchers studying cell-cell adhesion-related genes often need to determine whether a candidate gene is causally involved in adhesion, migration or disease progression. EDITGENE provides end-to-end CRISPR services to generate precisely engineered cell models for such studies.
Contact EDITGENE today to design your custom CRISPR model for cell-cell adhesion research.
Frequently Asked Questions About cell-cell adhesion
What is GO:0098609 cell-cell adhesion?
GO:0098609 cell-cell adhesion is the biological process by which one cell attaches to another cell via adhesion molecules.
What genes are involved in cell-cell adhesion?
Key genes include CDH1, CDH2, ALCAM, CTNNB1, TJP1, OCLN, CLDN1, ITGB1 and FERMT2.
What is the definition of cell-cell adhesion?
The attachment of one cell to another cell via adhesion molecules.
How is cell-cell adhesion regulated?
It is regulated by transcriptional, post-translational and mechanical mechanisms, with crosstalk to cell-matrix adhesion.
What diseases are linked to cell-cell adhesion defects?
Cancer, endothelial disease and impaired tissue regeneration are linked to adhesion defects.
What are the main types of cell-cell junctions?
Tight junctions, adherens junctions, desmosomes and gap junctions are the main types.
How do CRISPR models help study cell-cell adhesion?
CRISPR knockout, point mutation, knock-in and overexpression allow causal testing of adhesion genes.
What is the role of ALCAM in cell adhesion?
ALCAM/CD166 modulates cell adhesion and migration, influencing metastasis.
What is migfilin and how does it relate to adhesion?
Migfilin has cell adhesion effects and is associated with comorbidities.
How does mechanotransduction relate to cell-cell adhesion?
Adhesion complexes sense mechanical forces and convert them into biochemical signals.
Conclusion
GO:0098609 cell-cell adhesion is a fundamental biological process that maintains tissue integrity, mediates mechanotransduction and is frequently dysregulated in disease. Its study requires precise genetic models, and CRISPR-based approaches are indispensable for dissecting the causal roles of adhesion genes. EDITGENE offers comprehensive CRISPR services to accelerate discovery in this field.
References
- 1. Duan B et al.. 2022. Migfilin: Cell Adhesion Effect and Comorbidities.. Onco Targets Ther 15:411-422 PMID: 35469339
- 2. Wibbe N et al.. 2023. Cell Adhesion at the Tight Junctions: New Aspects and New Functions.. Cells 12(23) PMID: 38067129
- 3. Zuidema A et al.. 2020. Crosstalk between Cell Adhesion Complexes in Regulation of Mechanotransduction.. Bioessays 42(11):e2000119 PMID: 32830356
- 4. Aman J et al.. 2023. Integrin-Dependent Cell-Matrix Adhesion in Endothelial Health and Disease.. Circ Res 132(3):355-378 PMID: 36730379
- 5. Lewczuk Ł et al.. 2019. Cell adhesion molecules in endometrial cancer - A systematic review.. Adv Med Sci 64(2):423-429 PMID: 31539810
- 6. Monemian Esfahani A et al.. 2019. Tissue Regeneration from Mechanical Stretching of Cell-Cell Adhesion.. Tissue Eng Part C Methods 25(11):631-640 PMID: 31407627
- 7. Chastney MR et al.. 2025. The role and regulation of integrins in cell migration and invasion.. Nat Rev Mol Cell Biol 26(2):147-167 PMID: 39349749
- 8. von Lersner A et al.. 2019. Modulation of cell adhesion and migration through regulation of the immunoglobulin superfamily member ALCAM/CD166.. Clin Exp Metastasis 36(2):87-95 PMID: 30778704
