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Updated: Jan 1, 2026
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Rat Mesentery Exteriorization: A Model for Investigating the Cellular Dynamics Involved in Angiogenesis
Published on: May 20, 2012
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"Splitting the matrix": intussusceptive angiogenesis meets MT1-MMP
Gabriela D'Amico1, José M Muñoz-Félix1, Ana Rita Pedrosa1
1Barts Cancer Institute, John Vane Science Centre, Queen Mary University of London, London, UK.
EMBO Molecular Medicine
|December 21, 2019
Summary
Endothelial cell MT1-MMP regulates intussusceptive angiogenesis in inflammatory colitis. Its cleavage of Thrombospondin 1 (TSP1) promotes nitric oxide production, aiding inflammatory bowel disease treatment strategies.
Area of Science:
- Molecular Medicine
- Cell Biology
- Immunology
Background:
- Pathological angiogenesis is implicated in tumor progression and chronic inflammatory conditions.
- Intussusceptive angiogenesis (IA) is a crucial process in inflammatory diseases.
Purpose of the Study:
- To identify key regulators of IA in inflammatory colitis.
- To elucidate the molecular mechanisms underlying inflammatory IA.
Main Methods:
- Investigated the role of membrane type 1 matrix metalloproteinase (MT1-MMP) in endothelial cells.
- Analyzed the interaction between MT1-MMP, Thrombospondin 1 (TSP1), and αvβ3 integrin.
- Assessed the impact on nitric oxide (NO) production and vasodilation.
Main Results:
- Endothelial cell MT1-MMP was identified as a critical regulator of IA in inflammatory colitis.
- MT1-MMP cleavage of TSP1 releases a fragment that binds to αvβ3 integrin.
- This interaction triggers NO production and vasodilation, promoting IA.
Conclusions:
- A novel mechanism controlling inflammatory IA via MT1-MMP and TSP1 has been discovered.
- This pathway presents potential therapeutic targets for inflammatory bowel disease.
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