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Related Experiment Video

Updated: Jun 21, 2026

A Simple Bioassay for the Evaluation of Vascular Endothelial Growth Factors

A Simple Bioassay for the Evaluation of Vascular Endothelial Growth Factors

Published on: March 15, 2016

Structure and function of VEGF receptors.

Edward Stuttfeld¹, Kurt Ballmer-Hofer

¹Paul Scherrer Institut, Biomolecular Research, Molecular Cell Biology, Villigen, Switzerland.

|August 7, 2009

Summary

Vascular endothelial growth factors (VEGFs) activate receptors through dimerization. New insights reveal how ligand-receptor and receptor-receptor interactions stabilize these dimers, enabling signaling for blood vessel development.

Area of Science:

Molecular Biology
Cell Signaling
Angiogenesis Research

Background:

Vascular endothelial growth factors (VEGFs) are crucial for blood and lymphatic vessel formation and maintenance.
VEGFs bind to receptor tyrosine kinases (VEGF receptors - VEGFRs) and coreceptors, initiating signaling pathways.
The structural mechanisms of VEGF receptor activation were previously unclear.

Purpose of the Study:

To elucidate the structural mechanisms underlying VEGF receptor activation.
To understand how ligand binding leads to receptor dimerization and downstream signaling.

Main Methods:

Analysis of recent structural data for VEGF and related receptor tyrosine kinases.
Investigating ligand-receptor and homotypic receptor-receptor interactions.

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Last Updated: Jun 21, 2026

A Simple Bioassay for the Evaluation of Vascular Endothelial Growth Factors

A Simple Bioassay for the Evaluation of Vascular Endothelial Growth Factors

Published on: March 15, 2016

In Vitro Model of Coronary Angiogenesis

In Vitro Model of Coronary Angiogenesis

Published on: March 10, 2020

Main Results:

Ligand binding induces dimerization of VEGF receptors.
Both ligand-receptor and homotypic receptor-receptor interactions stabilize these ligand-induced dimers.
Structural changes in the extracellular domain upon ligand binding are critical for signaling.

Conclusions:

VEGF receptor activation involves stabilized receptor dimers formed through multiple interactions.
Proper positioning of intracellular kinase domains within these dimers is essential for transmembrane signaling.
These findings advance our understanding of angiogenesis regulation at a structural level.