Related Experiment Video
Updated: Jul 20, 2026

09:04
A Simple Bioassay for the Evaluation of Vascular Endothelial Growth Factors
Published on: March 15, 2016
Vascular endothelial growth factor signaling pathways: therapeutic perspective
Marcin Kowanetz1, Napoleone Ferrara
1Genentech, Inc., South San Francisco, California 94080, USA.
Summary
Vascular endothelial growth factors (VEGF) are crucial for blood vessel formation during embryonic development. Targeting the VEGF pathway offers potential therapeutic strategies for tumors and other diseases like macular degeneration.
Area of Science:
- Developmental Biology
- Molecular Biology
- Oncology
Background:
- Vascular network formation is essential for embryonic development, involving complex processes like vasculogenesis and angiogenesis.
- Growth factors, particularly vascular endothelial growth factors (VEGF) and their receptors, tightly regulate blood vessel development.
- VEGF signaling is implicated in tumor neovascularization and various pathologies, including age-related macular degeneration and rheumatoid arthritis.
Purpose of the Study:
- To highlight the critical role of VEGF in vascular development and its implications in disease.
- To underscore the therapeutic potential of targeting the VEGF axis in cancer and other conditions.
Main Methods:
- Review of existing literature on VEGF function in embryonic development and disease.
- Analysis of studies involving genetic deficiencies in VEGF ligands or receptors.
- Examination of the role of VEGF in tumor angiogenesis and pathological conditions.
Main Results:
- VEGF signaling is indispensable for proper vascular formation and maturation, as evidenced by severe defects in VEGF-deficient models.
- VEGF family members also regulate lymphangiogenesis, vascular permeability, and hematopoiesis.
- Tumor cells release VEGF, promoting neovascularization and tumor growth.
Conclusions:
- The VEGF axis is a fundamental regulator of vascular development and a key player in pathological neovascularization.
- Targeting VEGF signaling presents a promising therapeutic avenue for cancer treatment and managing other VEGF-dependent diseases.
Related Concept Videos
Regulation of Angiogenesis and Blood Supply
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
Mechanism of Angiogenesis
Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...
Targeted Cancer Therapies
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
There are several types of targeted therapies against specific...
Interactions Between Signaling Pathways
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Mitogens and the Cell Cycle
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...

