VEGFA Protein: Target Overview, Research Applications, and Selection Guide
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Vascular endothelial growth factor A (VEGFA) is a secreted protein that plays a central role in angiogenesis and vascular development. It regulates endothelial cell proliferation, migration, and survival under both physiological and pathological conditions. In cancer, VEGFA is often overexpressed, promoting tumor angiogenesis and growth, making it a key target in anti-angiogenic therapy development.
VEGFA Target Overview
VEGFA is a secreted growth factor that primarily acts on endothelial cells through binding to VEGF receptors, especially VEGFR2. It is involved in:
- Angiogenesis regulation
- Endothelial cell proliferation and migration
- Vascular permeability control
- Tumor vascularization and progression
VEGFA exerts its biological functions mainly by activating receptor tyrosine kinases, with VEGFR2 being the dominant signaling mediator. Upon ligand binding, VEGFR2 undergoes dimerization and autophosphorylation, initiating downstream signaling cascades. Multiple VEGFA isoforms exist due to alternative splicing, with differences in receptor binding, extracellular matrix association, and bioavailability, which are important considerations in experimental design.
VEGFA Target Information
Target Name: VEGFA
Synonyms: VEGF; Vascular endothelial growth factor A
UniProt ID: P15692
Target Class: Secreted growth factor; angiogenic factor
VEGFA Mechanism of Action
VEGFA binds to VEGFR2 on endothelial cells, inducing receptor dimerization and activation of its tyrosine kinase activity. This activation triggers multiple downstream pathways, including PI3K/AKT, MAPK/ERK, and PLCγ signaling, leading to gene transcription and cellular responses. These signaling events promote endothelial cell survival, proliferation, migration, and vascular permeability, ultimately driving angiogenesis, while anti-VEGF therapies block this process to inhibit abnormal vessel formation.
Key Research Applications of VEGFA Protein
Angiogenesis and Vascular Development Research
- Study endothelial cell proliferation, migration, and survival.
- Model angiogenic signaling in vitro.
- Evaluate vascular development and remodeling mechanisms.
Cancer Progression and Tumor Microenvironment Studies
- Investigate tumor angiogenesis.
- Study VEGFA overexpression in cancer models.
- Analyze vascular support within the tumor microenvironment.
Anti-Angiogenic Drug Development
- Screen anti-VEGF antibodies, inhibitors, or receptor-blocking molecules.
- Evaluate inhibition of VEGFA–VEGFR signaling.
- Support drug discovery assays targeting abnormal angiogenesis.
Endothelial Cell Biology and Signaling Studies
- Study VEGFR2 activation and downstream signaling.
- Measure PI3K/AKT, MAPK/ERK, and PLCγ pathway responses.
- Analyze endothelial survival and migration responses.
Biomarker Research
- Evaluate VEGFA as a disease progression marker.
- Support ELISA-based detection and quantification.
- Study VEGFA levels in cancer, inflammatory, or vascular disease models.
Hypoxia and Stress-Response Studies
- Investigate hypoxia-induced VEGFA expression.
- Study stress-responsive angiogenic signaling.
- Connect VEGFA activity with HIF-related pathway regulation.
VEGFA Experimental Workflows and Use Cases
- Binding assays – VEGFA–VEGFR interaction analysis
- Cell proliferation assays – endothelial growth response
- Migration assays – angiogenesis modeling (e.g., wound healing, transwell)
- Tube formation assays – in vitro angiogenesis models
- Inhibition assays – evaluation of anti-VEGF therapeutics
- ELISA / SPR / BLI – binding affinity and kinetics measurement
Because VEGFA is a secreted ligand, it is best suited for functional cell-based assays and receptor interaction studies, rather than intracellular enzyme assays.
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