GO:0120078 cell adhesion involved in sprouting angiogenesis: Endothelial Junction Dynamics, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0120078 describes the adhesion of endothelial cells to each other or to the extracellular matrix specifically during the formation of new blood vessel networks by sprouting.
• This process is distinct from general cell adhesion because it is spatially and temporally restricted to angiogenic sprouts and vascular anastomosis.
• Key molecular players include PECAM-1 (CD31), Vimentin, Rap1, Rho kinase, HoxB5, and Gicerin/CD146, all of which modulate endothelial cell-cell or cell-matrix contacts during sprouting.
• Dysregulation of this adhesion program contributes to tumor angiogenesis, wound healing defects, and cardiovascular pathology.
• CRISPR-based knockout, point mutation, knock-in, and overexpression models are essential to dissect the causal role of individual adhesion genes in sprouting angiogenesis.
• EDITGENE provides end-to-end CRISPR services including library screening and bioinformatics to accelerate discovery in this pathway.
Description
Sprouting angiogenesis is the process by which new blood vessels emerge from pre-existing vasculature, a fundamental event in development, wound healing, and tumor progression. Central to this process is the ability of endothelial cells to dynamically attach to one another and to the extracellular matrix, a specialized biological process captured by the Gene Ontology term GO:0120078, cell adhesion involved in sprouting angiogenesis. This term defines the attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules that contributes to the formation of a blood vessel network. Unlike generic cell adhesion, GO:0120078 is context-dependent, occurring specifically at the tips and stalks of angiogenic sprouts and during vascular anastomosis. Researchers study GO:0120078 because it bridges molecular adhesion machinery with tissue-level vascular morphogenesis. For example, platelet endothelial cell adhesion molecule-1 (PECAM-1/CD31) is a well-known endothelial junctional protein whose loss alters angiogenesis in vivo. Vimentin, a cytoskeletal intermediate filament protein, has been shown to regulate cell adhesion and endothelial sprouting, linking mechanical properties to junctional stability. Rap1 GTPase mediates angiopoietin-1-induced cell-cell junction stabilization and endothelial sprouting, highlighting the role of small GTPases in this process. Rho kinase controls blood vessel integrity and angiogenesis, further underscoring the importance of cytoskeletal-adhesion crosstalk. Understanding GO:0120078 has direct translational implications. In pancreatic cancer, HuR-regulated extracellular vesicles promote endothelial cell remodeling, a process that depends on adhesion dynamics. In wounded skin, genome-wide expression analyses have identified novel angiogenesis-related genes that may participate in adhesion during sprouting. Zebrafish studies of Gicerin/CD146 reveal its involvement in cardiovascular development and tumor angiogenesis, providing in vivo evidence for adhesion molecules in vascular network formation. Thus, GO:0120078 is a focal point for both basic vascular biology and therapeutic targeting.
cell adhesion involved in sprouting angiogenesis At A Glance
| GO ID | GO:0120078 |
|---|---|
| GO term | cell adhesion involved in sprouting angiogenesis |
| Ontology | biological_process |
| Synonym | cell adhesion involved in blood vessel anastomosis; cell adhesion involved in vascular anastomosis |
| Major function | Mediates endothelial cell-cell and cell-matrix attachments required for new blood vessel network formation |
| Related processes | Sprouting angiogenesis, vascular anastomosis, endothelial cell migration, junction stabilization |
| Key molecules | PECAM-1, Vimentin, Rap1, Rho kinase, HoxB5, Gicerin/CD146 |
| Disease relevance | Cancer, cardiovascular disease, wound healing disorders |
What Is GO:0120078?
GO:0120078, cell adhesion involved in sprouting angiogenesis, is a biological process defined as the attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules that contributes to the formation of a blood vessel network. This term encompasses adhesion events that are specifically required for endothelial cells to migrate, align, and connect during sprouting angiogenesis and vascular anastomosis. It excludes general cell adhesion that is not tied to vessel formation.
Why Is cell adhesion involved in sprouting angiogenesis Important in Cell Biology?
GO:0120078 is important because it defines the adhesion events that are indispensable for sprouting angiogenesis, a process that underlies normal development and contributes to numerous pathologies. Without precise regulation of cell-cell and cell-matrix adhesion, endothelial sprouts cannot extend, guide, or fuse into functional vessels. This term provides a framework for understanding how adhesion molecules such as PECAM-1, Vimentin, and Rap1 effectors coordinate vascular morphogenesis. It also helps researchers interpret how pathological angiogenesis in tumors and ischemic diseases hijacks these adhesion programs.
• Defines a critical step in sprouting angiogenesis, distinct from general cell adhesion.
• Links endothelial junctional biology to vascular network formation and anastomosis.
• Involves PECAM-1, a key endothelial adhesion molecule whose loss alters angiogenesis in vivo.
• Vimentin regulates cell adhesion and endothelial sprouting, connecting cytoskeletal dynamics to junction stability.
• Rap1 mediates angiopoietin-1-induced cell-cell junction stabilization and sprouting.
• Rho kinase controls blood vessel integrity and angiogenesis, highlighting adhesion-cytoskeleton crosstalk.
• HoxB5 induces endothelial sprouting and modifies intussusceptive angiogenesis involving angiopoietin-2.
• Gicerin/CD146 is involved in zebrafish cardiovascular development and tumor angiogenesis.
• Dysregulation contributes to tumor angiogenesis, as seen in pancreatic cancer extracellular vesicle-mediated remodeling.
• Wound healing studies have identified novel angiogenesis genes potentially involved in adhesion during sprouting.
What Happens During cell adhesion involved in sprouting angiogenesis?
Initiation of endothelial sprouting and adhesion turnover
In simple terms: Endothelial cells loosen their connections to start forming new sprouts.
Sprouting angiogenesis begins when endothelial cells in existing vessels become activated by pro-angiogenic signals. This activation leads to the destabilization of existing cell-cell junctions and the acquisition of a migratory phenotype. Cell adhesion molecules are dynamically remodeled to allow tip cells to extend filopodia and navigate through the extracellular matrix. Studies in zebrafish have shown that Gicerin/CD146 is involved in cardiovascular development and tumor angiogenesis, suggesting a role in early adhesion events during sprouting. In wounded skin, genome-wide expression analyses have revealed novel genes involved in angiogenesis, some of which may regulate adhesion turnover during sprouting.
Cell-matrix adhesion and sprout guidance
In simple terms: New sprouts stick to the matrix to pull themselves forward.
As endothelial sprouts extend, they must adhere to the extracellular matrix to generate traction forces and guide directional migration. Vimentin has been identified as an integral regulator of cell adhesion and endothelial sprouting, linking intermediate filament dynamics to matrix adhesion. Rho kinase controls blood vessel integrity and angiogenesis, and its activity influences actomyosin contractility that is coupled to matrix adhesion during sprout extension. These adhesion events are essential for proper guidance and are distinct from general cell adhesion because they are spatially restricted to the growing sprout.
Cell-cell junction stabilization and anastomosis
In simple terms: Sprouts connect to each other and seal the new vessel.
When two sprouts meet, they must form stable cell-cell junctions to create a continuous lumen, a process known as anastomosis. Rap1 is involved in angiopoietin-1-induced cell-cell junction stabilization and endothelial cell sprouting, directly implicating this small GTPase in the adhesion events of GO:0120078. PECAM-1 (CD31) is a well-characterized endothelial junctional adhesion molecule; studies in PECAM-1-null mice show altered angiogenesis, confirming its role in vascular adhesion. HoxB5 induces endothelial sprouting in vitro and modifies intussusceptive angiogenesis in vivo involving angiopoietin-2, further highlighting transcriptional control of adhesion during vessel formation.
Remodeling and maturation of the new vessel network
In simple terms: The new vessel network is refined and stabilized.
After anastomosis, the newly formed vessel network undergoes remodeling and maturation, which requires continued adhesion signaling to maintain integrity and adapt to hemodynamic forces. Rho kinase activity is critical for blood vessel integrity and angiogenesis, and its inhibition affects vessel stabilization. In pancreatic cancer, HuR-regulated extracellular vesicles promote endothelial cell remodeling, a process that involves adhesion-dependent changes in the endothelium. These events ensure that the new vessels become stable and functional, completing the process described by GO:0120078.
Key Genes Involved in GO:0120078 cell adhesion involved in sprouting angiogenesis
The following genes and proteins have been experimentally implicated in cell adhesion involved in sprouting angiogenesis (GO:0120078) or closely related vascular adhesion processes.
| Gene | Major Role | Research Relevance |
|---|---|---|
| PECAM1 (CD31) | Endothelial cell-cell adhesion molecule | PECAM-1-null mice show altered angiogenesis |
| VIM | Intermediate filament protein regulating cell adhesion | Regulates endothelial sprouting and adhesion |
| RAP1A/RAP1B | Small GTPase mediating junction stabilization | Involved in angiopoietin-1-induced cell-cell junction stabilization and sprouting |
| ROCK1/ROCK2 | Rho kinase effectors controlling actomyosin | Endothelial Rho kinase controls blood vessel integrity and angiogenesis |
| HOXB5 | Transcription factor inducing sprouting | Induces endothelial sprouting and modifies intussusceptive angiogenesis |
| CD146 (MCAM) | Cell adhesion molecule | Gicerin/Cd146 involved in zebrafish cardiovascular development and tumor angiogenesis |
| ANGPT1 | Angiopoietin-1 ligand | Stabilizes cell-cell junctions via Rap1 |
| ANGPT2 | Angiopoietin-2 ligand | Involved in HoxB5-mediated intussusceptive angiogenesis |
| ELAVL1 (HuR) | RNA-binding protein | Regulates extracellular vesicles promoting endothelial remodeling |
| CDH5 (VE-cadherin) | Endothelial adherens junction protein | Core component of endothelial cell-cell adhesion (implied by junction studies) |
| ITGB1 | Integrin beta-1 | Mediates cell-matrix adhesion during sprouting (implied by matrix adhesion studies) |
| FN1 | Fibronectin | Extracellular matrix ligand for integrins during sprouting |
| COL4A1 | Collagen type IV | Basement membrane component supporting endothelial adhesion |
| RAC1 | Rho family GTPase | Regulates cytoskeletal dynamics and adhesion during angiogenesis |
| CDC42 | Rho family GTPase | Controls filopodia formation and adhesion in tip cells |
| WASF2 | WASP family member | Regulates actin polymerization at adhesion sites (implied by cytoskeletal studies) |
| PXN | Paxillin | Focal adhesion protein involved in cell-matrix adhesion |
How Is cell adhesion involved in sprouting angiogenesis Regulated?
The process of cell adhesion involved in sprouting angiogenesis is tightly regulated by a network of signaling pathways. Angiopoietin-1, acting through its receptor Tie2, stabilizes endothelial cell-cell junctions via Rap1, which is essential for controlled sprouting. Rho kinase (ROCK) activity downstream of RhoA modulates actomyosin contractility and adhesion turnover, and its inhibition disrupts vessel integrity and angiogenesis. Transcription factors such as HoxB5 regulate the expression of adhesion-related genes and angiopoietin-2, thereby influencing sprouting and intussusceptive angiogenesis. Additionally, RNA-binding proteins like HuR control the release of extracellular vesicles that promote endothelial remodeling, adding a post-transcriptional layer of regulation. These pathways ensure that adhesion is spatially and temporally coordinated during vessel formation.
cell adhesion involved in sprouting angiogenesis and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| PECAM1 | Tumor angiogenesis, vascular permeability | PECAM-1 knockout mouse |
| VIM | Wound healing, fibrosis, cancer | Vimentin knockout or overexpression in endothelial cells |
| RAP1A/RAP1B | Vascular leak, inflammation | Rap1 knockout or point mutation in endothelial cells |
| ROCK1/ROCK2 | Cardiovascular disease, hypertension | Rho kinase knockout or inhibitor-treated models |
| CD146 | Tumor angiogenesis, cardiovascular development | Zebrafish gicerin/cd146 mutants |
Cancer and tumor angiogenesis
Tumor angiogenesis relies on sprouting endothelial cells that must adhere to each other and to the matrix to form new blood vessels supplying the tumor. In pancreatic cancer, HuR-regulated extracellular vesicles promote endothelial cell remodeling, a process dependent on adhesion dynamics. Gicerin/CD146 is involved in tumor angiogenesis in zebrafish models, suggesting its potential as a therapeutic target. Dysregulation of adhesion molecules like PECAM-1 can alter tumor vascularization, as shown in PECAM-1-null mice.
Cardiovascular disease and vascular integrity
Proper regulation of endothelial adhesion is critical for vascular integrity. Rho kinase controls blood vessel integrity and angiogenesis; its dysregulation can lead to vascular leakage and pathological remodeling. Rap1-mediated junction stabilization is essential for maintaining endothelial barrier function, and its impairment contributes to vascular disease. HoxB5-induced sprouting and its effects on intussusceptive angiogenesis may influence cardiovascular development and disease.
Wound healing and tissue repair
Sprouting angiogenesis is a key component of wound healing, where new vessels must form to deliver oxygen and nutrients to repairing tissue. Genome-wide expression analysis of wounded skin has revealed novel genes involved in angiogenesis, some of which are likely to participate in adhesion during sprouting. Vimentin, an integral regulator of cell adhesion and endothelial sprouting, plays a role in wound healing by modulating endothelial cell migration and junction formation.
From cell adhesion involved in sprouting angiogenesis-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of PECAM-1 affect sprouting angiogenesis in vivo? | PECAM-1 knockout mouse |
| How does Vimentin regulate endothelial cell adhesion during sprouting? | Vimentin knockout or overexpression in endothelial cells |
| What is the role of Rap1 in angiopoietin-1-induced junction stabilization? | Rap1 knockout or point mutation in endothelial cells |
| Does Rho kinase control blood vessel integrity and angiogenesis? | Rho kinase knockout or conditional knockout mouse |
| How does HoxB5 induce endothelial sprouting? | HoxB5 overexpression or knockout in endothelial cells |
| What is the function of Gicerin/CD146 in cardiovascular development? | Zebrafish cd146 knockout or knockdown |
How to Study the cell adhesion involved in sprouting angiogenesis Process
| Method | What It Measures | Typical Application |
|---|---|---|
| CRISPR knockout | Loss-of-function phenotype | Testing causal role of adhesion genes in sprouting |
| RNA-seq | Transcriptional changes | Identifying novel angiogenesis genes in wounded skin |
| Proteomics | Protein expression and interactions | Profiling adhesion complex components |
| Live-cell imaging | Dynamic adhesion and sprouting | Visualizing endothelial sprout formation |
| Pharmacological inhibition | Pathway activity | Assessing Rho kinase or Rap1 roles |
| Zebrafish models | In vivo vascular development | Studying gicerin/cd146 function |
| Endothelial sprouting assay | Sprout formation and adhesion | Testing Vimentin or HoxB5 effects |
| Extracellular vesicle analysis | Intercellular communication | Investigating HuR-regulated remodeling |
Genetic knockout and knockdown models
CRISPR-Cas9-mediated knockout of candidate adhesion genes in endothelial cells or animal models is a powerful approach to study GO:0120078. For example, PECAM-1-null mice have been used to demonstrate altered angiogenesis. Zebrafish gicerin/cd146 mutants reveal cardiovascular developmental defects. These models allow researchers to assess the causal role of specific adhesion molecules in sprouting angiogenesis.
Transcriptomic and proteomic profiling
Genome-wide expression analysis of wounded skin has identified novel genes involved in angiogenesis, providing candidates for further study in the context of adhesion during sprouting. Proteomic approaches can quantify changes in adhesion complex composition following genetic or pharmacological perturbations. RNA-seq and mass spectrometry are commonly used to profile endothelial cells under angiogenic conditions.
Live-cell imaging and adhesion assays
Live-cell imaging of endothelial sprouting in vitro and in vivo allows direct visualization of adhesion dynamics. Vimentin's role in cell adhesion and endothelial sprouting was demonstrated using such assays. Zebrafish models enable real-time observation of vascular development and anastomosis. These methods are essential to confirm that observed molecular changes translate into functional adhesion events.
Pharmacological and genetic modulation of signaling
Small molecule inhibitors and genetic modifiers can be used to dissect signaling pathways regulating adhesion during sprouting. Rho kinase inhibitors have been used to show effects on blood vessel integrity and angiogenesis. Rap1 activation or inhibition studies reveal its role in junction stabilization. These approaches complement CRISPR-based models.
How CRISPR Can Be Used to Study GO:0120078 cell adhesion involved in sprouting angiogenesis
Knockout
CRISPR knockout of genes such as PECAM1, VIM, or RAP1 in endothelial cells or animal models can reveal their essential functions in cell adhesion involved in sprouting angiogenesis. For instance, PECAM-1-null mice exhibit altered angiogenesis, validating the role of this adhesion molecule. Knockout of Rho kinase effectors disrupts vessel integrity. These models are foundational for target validation.
Point Mutation
Introducing precise point mutations in adhesion genes can dissect specific domains or phosphorylation sites required for sprouting angiogenesis. For example, mutations in Rap1 that affect its GTPase activity can clarify its role in angiopoietin-1-induced junction stabilization. Point mutations in Vimentin can test its regulatory role in cell adhesion. This approach provides mechanistic insights beyond simple knockout.
Knock-in
Knock-in of tagged versions of adhesion proteins (e.g., GFP-PECAM1 or mCherry-Vimentin) allows real-time visualization of protein localization and dynamics during sprouting. Knock-in of reporter genes under the control of endogenous promoters can track gene expression in vivo. These models are valuable for studying GO:0120078 in living tissues.
Overexpression
Overexpression of pro-angiogenic adhesion molecules such as HoxB5 or Gicerin/CD146 can induce or enhance sprouting angiogenesis in vitro and in vivo. HoxB5 overexpression induces endothelial sprouting and modifies intussusceptive angiogenesis. Overexpression of Vimentin can alter adhesion and sprouting. These gain-of-function models complement loss-of-function studies.
How EDITGENE Supports cell adhesion involved in sprouting angiogenesis Research
Researchers studying cell adhesion involved in sprouting angiogenesis-related genes often need to determine whether a candidate gene is causally involved in endothelial adhesion, junction stabilization, or vascular network formation. EDITGENE provides a comprehensive suite of CRISPR-based services to generate precisely engineered cell and animal models, enabling rigorous functional interrogation of GO:0120078.
Contact EDITGENE today to design your custom CRISPR model for cell adhesion involved in sprouting angiogenesis research.
Frequently Asked Questions About cell adhesion involved in sprouting angiogenesis
What is GO:0120078?
GO:0120078 is the Gene Ontology term for cell adhesion involved in sprouting angiogenesis, defined as the attachment of a cell to another cell or extracellular matrix via adhesion molecules that contributes to blood vessel network formation.
What genes are involved in cell adhesion involved in sprouting angiogenesis?
Key genes include PECAM1, VIM, RAP1A/RAP1B, ROCK1/ROCK2, HOXB5, and CD146, as shown in studies of endothelial sprouting and vascular development.
How does cell adhesion contribute to sprouting angiogenesis?
Cell adhesion provides the mechanical links needed for endothelial cells to migrate, stabilize junctions, and form new vessel connections during sprouting.
What is the role of PECAM-1 in sprouting angiogenesis?
PECAM-1 (CD31) is an endothelial cell-cell adhesion molecule; PECAM-1-null mice show altered angiogenesis, indicating its importance in vascular adhesion.
How is Rap1 involved in endothelial cell adhesion?
Rap1 mediates angiopoietin-1-induced cell-cell junction stabilization and is required for proper endothelial sprouting.
What experimental models are used to study GO:0120078?
Common models include CRISPR knockout mice or cells, zebrafish mutants, and in vitro sprouting assays with pharmacological inhibitors.
Why is cell adhesion important for tumor angiogenesis?
Tumor angiogenesis depends on endothelial adhesion to form new vessels; molecules like CD146 and HuR-regulated vesicles promote this process in cancer.
What methods are used to study cell adhesion in sprouting angiogenesis?
Methods include live-cell imaging, RNA-seq, proteomics, CRISPR screens, and endothelial sprouting assays.
Can CRISPR be used to study cell adhesion involved in sprouting angiogenesis?
Yes, CRISPR knockout, point mutation, knock-in, and overexpression models enable precise functional dissection of adhesion genes in this process.
What diseases are linked to defects in sprouting angiogenesis adhesion?
Cancer, cardiovascular disease, and wound healing disorders are associated with dysregulated endothelial adhesion during sprouting.
Conclusion
GO:0120078, cell adhesion involved in sprouting angiogenesis, is a specialized biological process that integrates endothelial cell adhesion with vascular morphogenesis. Through the actions of molecules such as PECAM-1, Vimentin, Rap1, Rho kinase, HoxB5, and Gicerin/CD146, this process ensures proper sprout extension, junction stabilization, and anastomosis. Dysregulation contributes to cancer, cardiovascular disease, and impaired wound healing. Researchers can leverage CRISPR-based knockout, point mutation, knock-in, and overexpression models, combined with advanced imaging and omics, to dissect the causal roles of individual genes in this pathway. EDITGENE offers comprehensive services to accelerate such discoveries, from custom model generation to library screening and bioinformatics analysis.
References
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- 2. Dave JM et al.. 2014. Vimentin as an integral regulator of cell adhesion and endothelial sprouting.. Microcirculation 21(4):333-44 PMID: 24387004
- 3. Gaonac'h-Lovejoy V et al.. 2020. Rap1 is Involved in Angiopoietin-1-Induced Cell-Cell Junction Stabilization and Endothelial Cell Sprouting.. Cells 9(1) PMID: 31936361
- 4. Finan JM et al.. 2025. HuR-Regulated Extracellular Vesicles Promote Endothelial Cell Remodeling in Pancreatic Cancer.. Cancer Res Commun 5(9):1501-1515 PMID: 40814996
- 5. Lange M et al.. 2026. Endothelial Rho kinase controls blood vessel integrity and angiogenesis.. Cardiovasc Res 121(18):2968-2982 PMID: 41403023
- 6. Winnik S et al.. 2009. HoxB5 induces endothelial sprouting in vitro and modifies intussusceptive angiogenesis in vivo involving angiopoietin-2.. Cardiovasc Res 83(3):558-65 PMID: 19403561
- 7. Brönneke S et al.. 2015. Genome-wide expression analysis of wounded skin reveals novel genes involved in angiogenesis.. Angiogenesis 18(3):361-71 PMID: 26018928
- 8. So JH et al.. 2010. Gicerin/Cd146 is involved in zebrafish cardiovascular development and tumor angiogenesis.. Genes Cells 15(11):1099-110 PMID: 20977546
