GO:0043542 endothelial cell migration: Angiogenesis Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0043542 endothelial cell migration is the orderly movement of an endothelial cell into the extracellular matrix to form an endothelium.
• It is a biological_process that drives angiogenesis, tissue repair, and tumor vascularization.
• Key molecular players include VEGFA, VEGFR2 (KDR), FAK (PTK2), S1P, GPR63, and MMPs [2,5,6,8].
• Migration proceeds through polarization, protrusion, adhesion, contraction, and rear retraction.
• Dysregulated endothelial cell migration contributes to cancer, atherosclerosis, and impaired wound healing [1,5].
• CRISPR knockout, knock-in, and overexpression models enable causal testing of migration genes.
Description
Endothelial cell migration is a fundamental biological process required for the formation of new blood vessels and the repair of damaged vasculature. It is defined as the orderly movement of an endothelial cell into the extracellular matrix to form an endothelium. This process is central to angiogenesis, where endothelial cells sprout from existing vessels and migrate toward angiogenic stimuli. Researchers study endothelial cell migration to understand vascular development, tissue regeneration, and pathological conditions such as cancer and chronic inflammation [1,3]. The migration of endothelial cells is not a random event; it is tightly regulated by growth factors, adhesion molecules, and intracellular signaling cascades [2,3]. For example, vascular endothelial growth factor A (VEGFA) and its receptor VEGFR2 (KDR) initiate signaling that promotes cell polarization and directional movement. In addition, sphingosine-1-phosphate (S1P) and its receptor GPR63 have been shown to promote endothelial cell migration and stemness in colorectal cancer. Understanding the molecular mechanisms of endothelial cell migration is therefore essential for developing therapeutic strategies that modulate angiogenesis in disease [1,5].
endothelial cell migration At A Glance
| GO ID | GO:0043542 |
|---|---|
| GO term | endothelial cell migration |
| Ontology | biological_process |
| Synonym | None |
| Major function | Orderly movement of endothelial cells into the extracellular matrix to form an endothelium |
| Related processes | Angiogenesis, wound healing, tissue regeneration |
| Key regulators | VEGFA, VEGFR2, FAK, S1P, MMPs |
| Disease relevance | Cancer, atherosclerosis, inflammation |
What Is GO:0043542?
According to the Gene Ontology, GO:0043542 endothelial cell migration is the orderly movement of an endothelial cell into the extracellular matrix to form an endothelium. This definition encompasses the directed translocation of endothelial cells, which is a key step in vasculogenesis and angiogenesis. The term is classified under biological_process and does not have synonyms in the QuickGO database.
Why Is endothelial cell migration Important in Cell Biology?
Endothelial cell migration is essential for angiogenesis, the process by which new blood vessels form from pre-existing ones. This process is critical for normal physiological events such as embryonic development, wound healing, and tissue regeneration. In pathological conditions, aberrant endothelial cell migration contributes to tumor progression by supporting tumor vascularization and metastasis. It also plays a role in inflammatory diseases, where endothelial cells migrate in response to leukocyte-derived signals. Therefore, understanding the mechanisms of endothelial cell migration is vital for developing therapies that target angiogenesis in cancer, cardiovascular disease, and chronic inflammation [1,5].
• Drives angiogenesis, which is required for tumor growth and metastasis.
• Essential for wound healing and tissue regeneration after injury.
• Contributes to the pathogenesis of atherosclerosis and restenosis.
• Mediates leukocyte extravasation during inflammation.
• Regulates vascular permeability and endothelial barrier function.
• Involved in stemness and migration of cancer cells via S1P/GPR63 signaling.
• Target for anti-angiogenic therapies in oncology.
• Required for endothelialization of biomaterials and stents.
• Modulated by mechanical forces such as shear stress.
• Dysregulated in diabetic retinopathy and macular degeneration.
What Happens During endothelial cell migration?
Initiation and Polarization
In simple terms: The cell decides which way to move by forming a front and a back.
Endothelial cell migration begins with the reception of pro-migratory signals, such as VEGFA binding to VEGFR2 (KDR). This activates intracellular signaling pathways that lead to the polarization of the cell, establishing a leading edge and a trailing edge. The leading edge is characterized by the formation of actin-rich protrusions, such as lamellipodia and filopodia, which sense the environment and drive forward movement. Polarization also involves the reorientation of the microtubule-organizing center and the Golgi apparatus toward the direction of migration.
Protrusion and Adhesion
In simple terms: The cell extends its front and grabs onto the surface to pull itself forward.
At the leading edge, actin polymerization pushes the plasma membrane forward to form protrusions. These protrusions are stabilized by adhesion complexes that link the actin cytoskeleton to the extracellular matrix (ECM). Integrins, such as alpha-v-beta-3, bind to ECM components like fibronectin and vitronectin, and cluster to form focal adhesions. Focal adhesion kinase (FAK, also known as PTK2) is a key regulator of this process, as it is activated upon integrin clustering and promotes turnover of focal adhesions. Protrudin has been shown to regulate FAK activation, endothelial cell migration, and angiogenesis.
Contraction and Rear Retraction
In simple terms: The cell pulls its back end forward by contracting its internal cables.
After adhesion, the cell generates contractile forces through the actomyosin cytoskeleton, which pulls the cell body forward. This contraction is mediated by non-muscle myosin II, which is activated by Rho-associated kinase (ROCK). At the rear of the cell, focal adhesions disassemble, and the trailing edge retracts. This process requires the coordinated activity of proteases, such as matrix metalloproteinases (MMPs), which degrade the ECM to allow the cell to move through tissues. Hydrogen peroxide has been shown to activate endothelial cell-associated MMPs during VCAM-1-dependent leukocyte migration.
Extracellular Matrix Remodeling
In simple terms: The cell clears a path through the surrounding matrix by cutting proteins.
Endothelial cells secrete and activate MMPs to degrade the extracellular matrix, facilitating their migration through tissues. MMP-2 and MMP-9 are particularly important for endothelial cell migration during angiogenesis. The degradation of ECM also releases growth factors that are sequestered in the matrix, further promoting migration. In addition, the composition and stiffness of the ECM influence the mode of migration, such as whether cells use focal adhesions or move in an amoeboid manner.
Regulation by Soluble Factors
In simple terms: Chemical signals tell the cell where and when to move.
Soluble factors such as VEGFA, S1P, and chemokines regulate endothelial cell migration [2,5]. S1P, for example, promotes migration and stemness by binding to GPR63 in colorectal cancer. In addition, inflammatory cytokines such as TNF-alpha can modulate endothelial cell migration by altering the expression of adhesion molecules. The interplay between these signals ensures that migration is directed and temporally controlled.
Key Genes Involved in GO:0043542 endothelial cell migration
The following genes and proteins are key regulators of endothelial cell migration, as supported by the cited literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| VEGFA | Primary pro-angiogenic growth factor | Stimulates endothelial cell migration and proliferation |
| KDR (VEGFR2) | Receptor for VEGFA | Mediates VEGFA-induced migration signaling |
| PTK2 (FAK) | Focal adhesion kinase | Regulates focal adhesion turnover and migration |
| GPR63 | Receptor for S1P | Promotes migration and stemness in colorectal cancer |
| MMP2 | Matrix metalloproteinase | Degrades ECM to facilitate migration |
| MMP9 | Matrix metalloproteinase | Degrades ECM and releases growth factors |
| VCAM-1 | Adhesion molecule | Mediates leukocyte-endothelial interactions and MMP activation |
| Protrudin (ZFYVE27) | Regulator of FAK activation | Modulates endothelial cell migration and angiogenesis |
| RhoA | Small GTPase | Regulates actomyosin contraction and migration |
| RAC1 | Small GTPase | Promotes lamellipodia formation |
| CDC42 | Small GTPase | Regulates filopodia formation |
| Integrin alpha-V | ECM receptor | Mediates adhesion to fibronectin and vitronectin |
| Integrin beta-3 | ECM receptor | Forms focal adhesions with alpha-V |
| S1PR1 | S1P receptor | Regulates endothelial migration and barrier function |
| S1PR3 | S1P receptor | Modulates migration and angiogenesis |
| CD44 | Cell surface glycoprotein | Involved in migration and ECM interactions |
| HIF1A | Hypoxia-inducible factor | Upregulates VEGFA under hypoxia |
How Is endothelial cell migration Regulated?
Endothelial cell migration is regulated by a complex network of signaling pathways. The VEGFA-VEGFR2 axis is a major regulator, activating downstream pathways such as PI3K/AKT and MAPK/ERK, which promote cell survival, proliferation, and migration. S1P signaling through GPR63 has been shown to promote migration and stemness in colorectal cancer cells. In addition, mechanical forces such as shear stress from blood flow modulate endothelial cell migration, particularly during stent endothelialization. Hydrogen peroxide can activate endothelial cell-associated MMPs, which are required for VCAM-1-dependent leukocyte migration. Protrudin regulates FAK activation, which is critical for focal adhesion dynamics during migration.
endothelial cell migration and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| VEGFA | Cancer, tumor angiogenesis | Knockout or overexpression in endothelial cells |
| GPR63 | Colorectal cancer | Knockout in cancer cells to study S1P-mediated migration |
| PTK2 (FAK) | Angiogenesis, cancer | Point mutation to inhibit FAK activation |
| MMP2/MMP9 | Inflammation, cancer | Knockout to study ECM degradation |
| VCAM-1 | Atherosclerosis, inflammation | Knock-in of tagged VCAM-1 for imaging |
Cancer and Tumor Angiogenesis
Endothelial cell migration is a hallmark of tumor angiogenesis, supplying nutrients and oxygen to growing tumors. Tumor cells secrete pro-angiogenic factors such as VEGFA, which stimulate endothelial cells to migrate and form new blood vessels. In colorectal cancer, endothelial cell-derived S1P promotes migration and stemness by binding with GPR63, contributing to tumor progression. Targeting endothelial cell migration is a key strategy for anti-angiogenic therapies.
Cardiovascular Disease and Restenosis
Endothelial cell migration is critical for re-endothelialization after vascular injury, such as stent implantation. Static and flow conditions influence endothelial cell migration onto metal stent surfaces, which is important for preventing restenosis and thrombosis. Dysregulated migration can lead to atherosclerosis, where endothelial cells migrate abnormally in response to inflammatory signals.
Inflammation and Leukocyte Extravasation
During inflammation, endothelial cells migrate and interact with leukocytes to facilitate their extravasation. VCAM-1-dependent leukocyte migration involves the activation of endothelial cell-associated MMPs by hydrogen peroxide. This process is essential for immune surveillance but can also contribute to chronic inflammatory diseases.
Tissue Regeneration and Wound Healing
Endothelial cell migration is essential for wound healing and tissue regeneration, as it promotes the formation of new blood vessels to supply oxygen and nutrients to injured tissues. Biomaterial applications often aim to promote endothelial cell migration to enhance implant integration and tissue repair.
From endothelial cell migration-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X regulate endothelial cell migration? | CRISPR knockout in HUVECs or endothelial cell lines |
| Does a specific mutation in gene Y affect migration? | Point mutation knock-in using CRISPR |
| Does overexpression of gene Z enhance migration? | CRISPR activation or lentiviral overexpression |
| Where is protein X localized during migration? | Tagged knock-in with fluorescent protein |
| What is the role of gene W in tumor angiogenesis? | Xenograft models with endothelial-specific knockout |
| How does shear stress affect gene V expression? | In vitro flow chamber with CRISPR-edited cells |
How to Study the endothelial cell migration Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Scratch wound assay | Rate of cell migration into a gap | Screening of migration regulators |
| Transwell assay | Directional migration toward chemoattractant | Chemotaxis studies |
| Live-cell imaging | Dynamic migration parameters | 3D migration analysis |
| Western blot | Protein expression and phosphorylation | Signaling pathway analysis |
| Immunofluorescence | Localization of proteins | Focal adhesion dynamics |
| Matrigel plug assay | In vivo angiogenesis | Testing pro-angiogenic factors |
| Zebrafish angiogenesis | Vascular development | Genetic screens |
| Flow chamber | Migration under shear stress | Stent endothelialization |
In Vitro Migration Assays
The scratch wound assay and transwell migration assay are commonly used to measure endothelial cell migration. In the scratch assay, a confluent monolayer is wounded, and the rate of cell migration into the denuded area is quantified. Transwell assays use a porous membrane to assess directional migration toward a chemoattractant. These methods are suitable for studying the effects of gene knockout or overexpression on migration speed and directionality.
Live-Cell Imaging and Tracking
Live-cell imaging combined with fluorescently tagged proteins allows real-time visualization of endothelial cell migration. 3D endothelial cell migration can be studied using collagen or fibrin matrices, which better mimic the in vivo environment. Tracking software quantifies parameters such as velocity, directionality, and persistence.
Molecular Analysis of Signaling
Western blotting and immunoprecipitation are used to analyze activation of key signaling molecules such as FAK, AKT, and ERK during migration. Proximity ligation assays and FRET biosensors can detect protein-protein interactions and kinase activities in live cells. These methods help elucidate the molecular mechanisms downstream of migration stimuli.
In Vivo Angiogenesis Models
Matrigel plug assays, corneal micropocket assays, and zebrafish models are used to study endothelial cell migration in vivo. These models allow assessment of angiogenesis and vascular patterning in response to genetic manipulations. The chick chorioallantoic membrane (CAM) assay is another classic model for studying endothelial cell migration.
How CRISPR Can Be Used to Study GO:0043542 endothelial cell migration
Knockout
CRISPR knockout is used to completely ablate the expression of genes involved in endothelial cell migration, such as PTK2 (FAK) or GPR63, to determine their necessity for migration [8,5]. Knockout of Protrudin (ZFYVE27) in endothelial cells impairs FAK activation and migration, demonstrating its critical role. This approach is valuable for identifying genes that are essential for angiogenesis.
Point Mutation
Point mutations can be introduced to study the effect of specific amino acid changes on protein function during migration. For example, mutating the autophosphorylation site of FAK (Y397F) can prevent its activation and inhibit migration. This allows researchers to dissect signaling pathways with precision.
Knock-in
Knock-in of fluorescent tags or reporter genes enables real-time visualization of proteins during migration. Tagging endogenous VEGFR2 with GFP allows tracking of receptor dynamics in live cells. Knock-in of disease-associated mutations can model human vascular disorders.
Overexpression
Overexpression of pro-migratory genes, such as VEGFA or constitutively active FAK, can enhance endothelial cell migration and angiogenesis [2,8]. This approach is useful for gain-of-function studies and for testing therapeutic candidates.
How EDITGENE Supports endothelial cell migration Research
Researchers studying endothelial cell migration-related genes often need to determine whether a candidate gene is causally involved in the process or merely correlated with it. CRISPR-based models provide a robust way to establish causality by precisely manipulating the genome.
Contact EDITGENE today to design your custom CRISPR model for endothelial cell migration research.
Frequently Asked Questions About endothelial cell migration
What is endothelial cell migration?
Endothelial cell migration is the orderly movement of an endothelial cell into the extracellular matrix to form an endothelium, as defined by GO:0043542.
What genes are involved in endothelial cell migration?
Key genes include VEGFA, KDR (VEGFR2), PTK2 (FAK), GPR63, MMP2, MMP9, and VCAM-1 [2,5,6,8].
How is endothelial cell migration regulated?
It is regulated by growth factors like VEGFA, S1P, and mechanical forces such as shear stress, which activate signaling pathways including PI3K/AKT and MAPK [2,4,5].
Why is endothelial cell migration important in cancer?
It drives tumor angiogenesis, supplying nutrients and oxygen to tumors and facilitating metastasis [2,5].
What methods are used to study endothelial cell migration?
Common methods include scratch wound assays, transwell assays, live-cell imaging, and in vivo angiogenesis models [1,7,2].
What is the role of FAK in endothelial cell migration?
FAK (PTK2) regulates focal adhesion turnover and is essential for endothelial cell migration and angiogenesis.
How does S1P affect endothelial cell migration?
S1P promotes migration and stemness by binding to GPR63 in colorectal cancer.
What is the role of MMPs in endothelial cell migration?
MMPs degrade the extracellular matrix to allow endothelial cells to migrate through tissues.
Can CRISPR be used to study endothelial cell migration?
Yes, CRISPR knockout, knock-in, and overexpression models are widely used to study gene function in endothelial cell migration [8,5].
What diseases are associated with abnormal endothelial cell migration?
Cancer, atherosclerosis, inflammation, and impaired wound healing are associated with dysregulated endothelial cell migration [1,5,6].
Conclusion
Endothelial cell migration (GO:0043542) is a fundamental biological process that underlies angiogenesis, tissue repair, and immune responses [1,2]. Its dysregulation contributes to cancer, cardiovascular disease, and chronic inflammation [5,6]. Understanding the molecular mechanisms and key genes involved is essential for developing targeted therapies. CRISPR-based models offer powerful tools to dissect these mechanisms and identify new therapeutic targets.
References
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- 2. Lamalice L et al.. 2007. Endothelial cell migration during angiogenesis.. Circ Res 100(6):782-94 PMID: 17395884
- 3. Michaelis UR. 2014. Mechanisms of endothelial cell migration.. Cell Mol Life Sci 71(21):4131-48 PMID: 25038776
- 4. Sprague E et al.. 2017. Static and Flow Conditions: Endothelial Cell Migration onto Metal Stent Surfaces.. J Long Term Eff Med Implants 27(2-4):97-110 PMID: 29773034
- 5. Zeng S et al.. 2022. Endothelial cell-derived S1P promotes migration and stemness by binding with GPR63 in colorectal cancer.. Pathol Res Pract 240:154197 PMID: 36371997
- 6. Cook-Mills JM. 2006. Hydrogen peroxide activation of endothelial cell-associated MMPs during VCAM-1-dependent leukocyte migration.. Cell Mol Biol (Noisy-le-grand) 52(4):8-16 PMID: 17543193
- 7. Jacobs KA et al.. 2018. 3D Endothelial Cell Migration.. Methods Mol Biol 1749:51-58 PMID: 29525990
- 8. Arora A et al.. 2022. Protrudin regulates FAK activation, endothelial cell migration and angiogenesis.. Cell Mol Life Sci 79(4):220 PMID: 35368213
