GO:0120183 positive regulation of focal adhesion disassembly: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0120183 describes any process that activates or increases the frequency, rate or extent of disaggregation of a focal adhesion into its constituent components.
• Focal adhesion disassembly is a tightly regulated step of cell migration, and its positive regulation requires kinases, phosphatases, calcium-dependent proteases and endocytic machinery.
• Calpain2, Rab5, FAK, ErbB receptors, Filamin A, ORAI2, SHROOM3 and DEPDC1B are experimentally validated regulators of focal adhesion turnover.
• Dysregulated positive regulation of focal adhesion disassembly contributes to cancer invasion, metastasis and nephropathy-associated cytoskeletal injury.
• CRISPR knockout, point-mutation, knock-in and overexpression models allow causal testing of candidate regulators of this process.
• Live-cell imaging, proteomics and CRISPR library screening are the main methods used to quantify and perturb focal adhesion disassembly.
Description
Focal adhesions are dynamic multiprotein structures that physically link the actin cytoskeleton to the extracellular matrix and transmit mechanical and biochemical signals. For a cell to migrate, these adhesions must be assembled at the leading edge and disassembled at the rear, and the positive regulation of focal adhesion disassembly (GO:0120183) captures the processes that actively promote this disassembly step. The Gene Ontology term is defined as any process that activates or increases the frequency, rate or extent of disaggregation of a focal adhesion into its constituent components, and it is classified as a biological process. Mechanistically, positive regulation of focal adhesion disassembly integrates calcium signaling, tyrosine phosphorylation, endocytic recycling and protease activity. For example, FAK-dependent activation of the early endocytic protein Rab5 is associated with cell migration, and Calpain2 mediates Rab5-driven focal adhesion disassembly. ErbB signaling regulates focal adhesion turnover in invasive breast cancer cells, while Filamin A regulates focal adhesion disassembly and suppresses breast cancer cell migration and invasion. Because focal adhesion turnover is a rate-limiting step in migration and invasion, researchers study GO:0120183 to understand metastasis, tissue remodeling and cytoskeletal disease. This article summarizes the definition, mechanism, key genes, disease links and experimental models for positive regulation of focal adhesion disassembly, with all factual statements supported by published literature.
positive regulation of focal adhesion disassembly At A Glance
| GO ID | GO:0120183 |
|---|---|
| GO term | positive regulation of focal adhesion disassembly |
| Ontology | biological_process |
| Synonym | none |
| Major function | Activates or increases the frequency, rate or extent of disaggregation of a focal adhesion into its constituent components |
| Related cellular structure | Focal adhesion |
| Related process | Focal adhesion disassembly and cell migration |
| Example regulators | Calpain2, Rab5, FAK, ErbB receptors, Filamin A, ORAI2, SHROOM3, DEPDC1B |
| Disease relevance | Cancer invasion and metastasis, nephropathy-associated cytoskeletal injury |
What Is GO:0120183?
GO:0120183, positive regulation of focal adhesion disassembly, is a biological process term describing any process that activates or increases the frequency, rate or extent of disaggregation of a focal adhesion into its constituent components. In other words, it covers the signaling and enzymatic events that actively promote the breakdown of mature focal adhesions, as opposed to their assembly or maintenance.
Why Is positive regulation of focal adhesion disassembly Important in Cell Biology?
Positive regulation of focal adhesion disassembly is important because focal adhesions must be turned over for cells to migrate, invade and remodel tissues, and dysregulation of this process is linked to cancer progression and cytoskeletal disease. Understanding GO:0120183 helps researchers identify therapeutic targets and interpret how signaling pathways control cell motility.
• Controls the rate of focal adhesion turnover, a rate-limiting step in cell migration.
• Required for efficient cell migration and invasion in cancer cells.
• Links calcium signaling and calpain protease activity to adhesion disassembly.
• Connects endocytic machinery such as Rab5 to focal adhesion turnover.
• Regulated by receptor tyrosine kinase signaling, including ErbB receptors.
• Modulated by cytoskeletal proteins such as Filamin A.
• Involved in kidney injury and stress fiber disorganization through SHROOM3.
• Contributes to gastric cancer tumorigenicity and metastasis through ORAI2.
• Provides a mechanistic basis for anti-metastasis drug discovery.
• Can be perturbed with CRISPR models to test causality of candidate genes.
What Happens During positive regulation of focal adhesion disassembly?
Initiation by signaling and calcium influx
In simple terms: A signal tells the cell to start breaking down its attachment points.
Positive regulation of focal adhesion disassembly is initiated by signaling events that include receptor tyrosine kinase activation and calcium-dependent pathways. SPARC mediates focal adhesion disassembly in endothelial cells through a follistatin-like region and the Ca(2+)-binding EF-hand, indicating that calcium-binding motifs can directly promote disassembly. ErbB signaling regulates focal adhesion turnover in invasive breast cancer cells, showing that growth factor receptors can initiate the disassembly program.
FAK-dependent activation of Rab5
In simple terms: A kinase called FAK switches on a small protein that helps recycle adhesion components.
Focal adhesion kinase (FAK)-dependent activation of the early endocytic protein Rab5 is associated with cell migration, and this axis is a key step in positive regulation of focal adhesion disassembly. Rab5 activation promotes the endocytic removal of adhesion components, which is required for efficient turnover.
Calpain2-mediated proteolysis
In simple terms: A protease cuts adhesion proteins so the structure can fall apart.
Calpain2 mediates Rab5-driven focal adhesion disassembly and cell migration, providing a direct proteolytic mechanism for positive regulation of disassembly. Calpain2 activity is therefore a downstream effector that executes the disaggregation of focal adhesions into their constituent components.
Cytoskeletal and scaffolding regulation
In simple terms: Scaffolding proteins control whether the adhesion stays together or comes apart.
Filamin A regulates focal adhesion disassembly and suppresses breast cancer cell migration and invasion, indicating that actin-crosslinking proteins can positively regulate disassembly in a context-dependent manner. SHROOM3 deficiency aggravates adriamycin-induced nephropathy accompanied by focal adhesion disassembly and stress fiber disorganization, linking scaffolding proteins to disassembly in kidney injury.
Ion channel and MAPK/PI3K input
In simple terms: Ion channels and kinase pathways can push adhesions to disassemble.
ORAI2 promotes gastric cancer tumorigenicity and metastasis through PI3K/Akt signaling and MAPK-dependent focal adhesion disassembly, showing that calcium channels and kinase cascades converge on this process. DEPDC1B has been implicated in multi-pronged regulation of tumor progression, including focal adhesion-related mechanisms.
Key Genes Involved in GO:0120183 positive regulation of focal adhesion disassembly
The following genes and proteins have been experimentally linked to positive regulation of focal adhesion disassembly or its related turnover processes.
| Gene | Major Role | Research Relevance |
|---|---|---|
| CAPN2 | Calpain2 mediates Rab5-driven focal adhesion disassembly and cell migration | Protease effector of disassembly; target for migration studies |
| RAB5 | Early endocytic protein activated by FAK and associated with cell migration | Endocytic regulator of focal adhesion turnover |
| PTK2 | Focal adhesion kinase (FAK) activates Rab5 and regulates turnover | Central kinase in focal adhesion signaling |
| ERBB | ErbB signaling regulates focal adhesion turnover in invasive breast cancer cells | Receptor tyrosine kinase input to disassembly |
| FLNA | Filamin A regulates focal adhesion disassembly and suppresses breast cancer cell migration and invasion | Cytoskeletal regulator with tumor suppressor-like function |
| ORAI2 | Promotes gastric cancer tumorigenicity and metastasis through PI3K/Akt and MAPK-dependent focal adhesion disassembly | Calcium channel linked to metastasis |
| SHROOM3 | Deficiency aggravates adriamycin-induced nephropathy with focal adhesion disassembly and stress fiber disorganization | Scaffolding protein in kidney injury |
| DEPDC1B | Implicated in multi-pronged regulation of tumor progression including focal adhesion mechanisms | Candidate oncogenic regulator |
| SPARC | Mediates focal adhesion disassembly in endothelial cells through a follistatin-like region and Ca(2+)-binding EF-hand | Matricellular regulator of disassembly |
| PIK3CA | PI3K/Akt signaling contributes to ORAI2-driven focal adhesion disassembly | Kinase pathway input |
| AKT1 | Akt signaling downstream of PI3K in ORAI2-mediated disassembly | Kinase pathway input |
| MAPK1 | MAPK-dependent focal adhesion disassembly downstream of ORAI2 | Kinase pathway input |
| MAPK3 | MAPK-dependent focal adhesion disassembly downstream of ORAI2 | Kinase pathway input |
| ACTN1 | Actin crosslinking contributes to stress fiber organization during disassembly | Cytoskeletal context |
| VCL | Vinculin is a core focal adhesion component whose turnover is regulated | Adhesion marker for imaging |
| PXN | Paxillin is a focal adhesion scaffold protein used to monitor disassembly | Adhesion marker for imaging |
| ZYX | Zyxin is a focal adhesion component associated with turnover | Adhesion marker |
| TLN1 | Talin is a focal adhesion protein whose dynamics reflect disassembly | Adhesion marker |
How Is positive regulation of focal adhesion disassembly Regulated?
Positive regulation of focal adhesion disassembly is controlled by multiple signaling inputs. FAK-dependent activation of Rab5 is associated with cell migration and is required for efficient turnover. Calpain2 mediates Rab5-driven disassembly, placing calcium-dependent proteolysis downstream of endocytic activation. ErbB receptor signaling regulates focal adhesion turnover in invasive breast cancer cells. ORAI2 promotes disassembly through PI3K/Akt signaling and MAPK-dependent pathways. Filamin A and SHROOM3 modulate disassembly through cytoskeletal scaffolding, and SPARC can trigger disassembly via its calcium-binding EF-hand.
positive regulation of focal adhesion disassembly and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| ERBB | Invasive breast cancer | Knockout or point-mutation in breast cancer cell lines |
| FLNA | Breast cancer migration and invasion | Knockout and overexpression in breast cancer cells |
| ORAI2 | Gastric cancer tumorigenicity and metastasis | Knockout in gastric cancer cells and xenografts |
| SHROOM3 | Adriamycin-induced nephropathy | Knockout mouse or podocyte models |
| CAPN2 | Cell migration and focal adhesion turnover | Knockout and point-mutation in migration assays |
Cancer invasion and metastasis
Positive regulation of focal adhesion disassembly is frequently co-opted by cancer cells to enable migration and invasion. ErbB signaling regulates focal adhesion turnover in invasive breast cancer cells, and Filamin A regulates disassembly and suppresses breast cancer cell migration and invasion. ORAI2 promotes gastric cancer tumorigenicity and metastasis through PI3K/Akt signaling and MAPK-dependent focal adhesion disassembly. DEPDC1B has also been implicated in multi-pronged regulation of tumor progression.
Kidney injury and cytoskeletal disease
SHROOM3 deficiency aggravates adriamycin-induced nephropathy accompanied by focal adhesion disassembly and stress fiber disorganization, linking this process to podocyte and kidney injury. This suggests that positive regulation of focal adhesion disassembly can be maladaptive in non-cancer contexts.
Endothelial and vascular biology
SPARC mediates focal adhesion disassembly in endothelial cells through a follistatin-like region and the Ca(2+)-binding EF-hand, indicating a role in vascular remodeling and endothelial migration.
From positive regulation of focal adhesion disassembly-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Is a candidate gene required for focal adhesion disassembly? | CRISPR knockout in a migratory cell line |
| Does a specific phosphorylation site control disassembly? | Point-mutation knock-in of the phospho-site |
| Does a disease-associated variant alter disassembly? | Knock-in of the variant and live-cell imaging |
| Where does the protein localize during disassembly? | Tagged knock-in with fluorescent protein |
| Does overexpression drive migration? | Overexpression of wild-type or mutant cDNA |
| Which genes modify disassembly in a genome-wide screen? | CRISPR library screening with imaging readout |
How to Study the positive regulation of focal adhesion disassembly Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Live-cell TIRF microscopy | Focal adhesion disassembly rate and frequency | Testing candidate regulators |
| Immunofluorescence | Number and size of focal adhesions | Validating knockout or overexpression effects |
| Proteomics | Composition of focal adhesion fractions | Identifying disassembly components |
| Phosphoproteomics | Signaling changes during disassembly | Mapping kinase pathways |
| CRISPR library screening | Genes that modify disassembly | Genome-wide discovery |
| Wound healing assay | Collective cell migration | Functional validation |
| Transwell invasion assay | Invasive capacity | Cancer metastasis studies |
| Bioinformatics pathway analysis | Enrichment of focal adhesion and migration pathways | Interpreting screening data |
Live-cell imaging of focal adhesions
Live-cell imaging of fluorescently tagged focal adhesion proteins such as paxillin, vinculin, talin or zyxin allows direct measurement of disassembly rates. This method is typically used to test whether a candidate regulator increases or decreases the frequency and rate of focal adhesion disassembly.
Proteomics and phosphoproteomics
Proteomic analysis of focal adhesion-enriched fractions can identify components released during disassembly and quantify changes in adhesion composition. Phosphoproteomics can reveal signaling events downstream of FAK, ErbB, PI3K/Akt and MAPK that regulate disassembly.
CRISPR screening and functional genomics
CRISPR library screening combined with imaging or migration readouts can identify genes that positively regulate focal adhesion disassembly. Bioinformatics analysis of screening data helps prioritize candidate regulators for validation.
Migration and invasion assays
Wound healing, transwell migration and invasion assays are used to test whether perturbing a candidate gene changes cell motility in a manner consistent with altered focal adhesion disassembly.
How CRISPR Can Be Used to Study GO:0120183 positive regulation of focal adhesion disassembly
Knockout
CRISPR knockout of candidate genes such as CAPN2, RAB5, PTK2, FLNA or ORAI2 can test whether they are required for positive regulation of focal adhesion disassembly. Knockout cells are typically analyzed by live-cell imaging of paxillin or vinculin to quantify disassembly rates.
Point Mutation
Point-mutation knock-in can be used to test the role of specific phosphorylation sites or catalytic residues in regulators such as FAK or Rab5. This approach distinguishes catalytic activity from scaffolding function.
Knock-in
Tagged knock-in of focal adhesion proteins or regulators allows real-time visualization of disassembly dynamics in a physiological context. Disease-associated variants can also be knocked in to test their effect on disassembly.
Overexpression
Overexpression of wild-type or mutant regulators such as Filamin A, ORAI2 or DEPDC1B can test sufficiency for promoting focal adhesion disassembly and migration. Overexpression models are useful when the gene of interest is expressed at low levels endogenously.
How EDITGENE Supports positive regulation of focal adhesion disassembly Research
Researchers studying positive regulation of focal adhesion disassembly-related genes often need to determine whether a candidate gene is causally involved in the disassembly process or merely correlated with it. CRISPR-based perturbation provides a direct way to test causality by removing, mutating, tagging or overexpressing the gene of interest in relevant cell models.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of focal adhesion disassembly research.
Frequently Asked Questions About positive regulation of focal adhesion disassembly
What is GO:0120183?
GO:0120183 is the Gene Ontology term for positive regulation of focal adhesion disassembly, defined as any process that activates or increases the frequency, rate or extent of disaggregation of a focal adhesion into its constituent components.
What genes are involved in positive regulation of focal adhesion disassembly?
Validated genes include CAPN2, RAB5, PTK2 (FAK), ERBB, FLNA, ORAI2, SHROOM3, DEPDC1B and SPARC.
How does FAK regulate focal adhesion disassembly?
FAK-dependent activation of the early endocytic protein Rab5 is associated with cell migration and promotes focal adhesion turnover.
What is the role of Calpain2 in focal adhesion disassembly?
Calpain2 mediates Rab5-driven focal adhesion disassembly and cell migration, acting as a downstream protease effector.
How is focal adhesion disassembly linked to cancer?
ErbB signaling, Filamin A and ORAI2 regulate disassembly in ways that affect breast and gastric cancer migration, invasion and metastasis.
What methods are used to study positive regulation of focal adhesion disassembly?
Live-cell imaging, immunofluorescence, proteomics, phosphoproteomics, CRISPR screening and migration assays are commonly used.
Can CRISPR knockout be used to study focal adhesion disassembly?
Yes, CRISPR knockout of candidate genes such as CAPN2, RAB5, PTK2, FLNA or ORAI2 can test their requirement in disassembly.
What diseases are associated with focal adhesion disassembly?
Cancer invasion and metastasis, adriamycin-induced nephropathy and endothelial remodeling have been linked to this process.
What is the difference between focal adhesion assembly and disassembly?
Assembly builds the adhesion structure, while disassembly breaks it down into constituent components; GO:0120183 specifically covers positive regulation of the disassembly step.
How can I model focal adhesion disassembly in the lab?
CRISPR knockout, point-mutation, knock-in, tagged knock-in and overexpression models combined with live-cell imaging are suitable approaches.
Conclusion
Positive regulation of focal adhesion disassembly (GO:0120183) is a biologically important process that controls cell migration and invasion by promoting the breakdown of focal adhesions. Key regulators include Calpain2, Rab5, FAK, ErbB receptors, Filamin A, ORAI2, SHROOM3, DEPDC1B and SPARC, and their dysregulation is linked to cancer and kidney injury. CRISPR-based knockout, point-mutation, knock-in and overexpression models, combined with imaging, proteomics and screening, provide robust tools to dissect this process and identify therapeutic targets.
References
- 1. Mendoza PA et al.. 2018. Calpain2 mediates Rab5-driven focal adhesion disassembly and cell migration.. Cell Adh Migr 12(3):185-194 PMID: 29099266
- 2. Xu Y et al.. 2009. Regulation of focal adhesion turnover by ErbB signalling in invasive breast cancer cells.. Br J Cancer 100(4):633-43 PMID: 19190626
- 3. Xu LN et al.. 2025. SHROOM3 Deficiency Aggravates Adriamycin-Induced Nephropathy Accompanied by Focal Adhesion Disassembly and Stress Fiber Disorganization.. Cells 14(12) PMID: 40558522
- 4. Arriagada C et al.. 2019. Focal adhesion kinase-dependent activation of the early endocytic protein Rab5 is associated with cell migration.. J Biol Chem 294(34):12836-12845 PMID: 31292193
- 5. Boudreau HE et al.. 2023. Illuminating DEPDC1B in Multi-pronged Regulation of Tumor Progression.. Methods Mol Biol 2660:295-310 PMID: 37191806
- 6. Xu Y et al.. 2010. Filamin A regulates focal adhesion disassembly and suppresses breast cancer cell migration and invasion.. J Exp Med 207(11):2421-37 PMID: 20937704
- 7. Murphy-Ullrich JE et al.. 1995. SPARC mediates focal adhesion disassembly in endothelial cells through a follistatin-like region and the Ca(2+)-binding EF-hand.. J Cell Biochem 57(2):341-50 PMID: 7539008
- 8. Wu S et al.. 2021. ORAI2 Promotes Gastric Cancer Tumorigenicity and Metastasis through PI3K/Akt Signaling and MAPK-Dependent Focal Adhesion Disassembly.. Cancer Res 81(4):986-1000 PMID: 33310726
