A short synthetic peptide inhibits signal transduction, migration and angiogenesis mediated by Tie2 receptor

Tie2, an endothelial cell‐specific receptor kinase, has an important role in tumour angiogenesis. In an attempt to identify peptides that specifically interact with and block the Tie2 pathway, a phage‐displayed peptide library was screened on a recombinant Tie2 receptor. One peptide, NLLMAAS, comple...

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Veröffentlicht in:EMBO reports 2004-03, Vol.5 (3), p.262-267
Hauptverfasser: Tournaire, Roselyne, Simon, Marie-Pierre, Noble, Ferdinand le, Eichmann, Anne, England, Patrick, Pouysségur, Jacques
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container_issue 3
container_start_page 262
container_title EMBO reports
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creator Tournaire, Roselyne
Simon, Marie-Pierre
Noble, Ferdinand le
Eichmann, Anne
England, Patrick
Pouysségur, Jacques
description Tie2, an endothelial cell‐specific receptor kinase, has an important role in tumour angiogenesis. In an attempt to identify peptides that specifically interact with and block the Tie2 pathway, a phage‐displayed peptide library was screened on a recombinant Tie2 receptor. One peptide, NLLMAAS, completely abolished the binding to Tie2 of both angiopoietin 2 and angiopoietin 1 (Ang1). We further show that NLLMAAS specifically suppresses both Ang1‐induced ERK activity and migration in human umbilical endothelial cells. Moreover, in vivo , this peptide inhibits angiogenesis in the chick chorioallantoic membrane assay. NLLMAAS is the first peptide described to interact with Tie2. Our results demonstrate that it is an efficient and specific antagonist of the binding of Tie2 ligands, and suggest that this peptide or its derivates may have potential applications in the treatment of angiogenesis diseases. It also represents a potent tool to dissect the molecular mechanisms involved in the Tie2 pathway.
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subjects angiogenesis
angiopoietin
Angiotensin I
Angiotensin I - antagonists & inhibitors
Angiotensin II
Angiotensin II - antagonists & inhibitors
Animals
antagonist peptides
Binding, Competitive
Biochemistry, Molecular Biology
Biological Assay
Cancer
Cell Behavior
Cell Movement
Cell Movement - drug effects
Cells, Cultured
Cellular Biology
Chick Embryo
Consensus Sequence
Endothelial Cells
Endothelial Cells - metabolism
Enzyme Inhibitors
Enzyme Inhibitors - chemistry
Enzyme Inhibitors - pharmacology
ERK signalling
Humans
Life Sciences
Mitogen-Activated Protein Kinase Kinases
Mitogen-Activated Protein Kinase Kinases - metabolism
Neovascularization, Physiologic
Neovascularization, Physiologic - drug effects
Oligopeptides
Oligopeptides - chemistry
Oligopeptides - pharmacology
Peptide Library
Peptides
phage display
Receptor, TIE-2
Receptor, TIE-2 - antagonists & inhibitors
Scientific Report
Signal Transduction
Signal Transduction - drug effects
Subcellular Processes
Tie2
Umbilical Veins
Umbilical Veins - cytology
Vascular Endothelial Growth Factor A
Vascular Endothelial Growth Factor A - metabolism
title A short synthetic peptide inhibits signal transduction, migration and angiogenesis mediated by Tie2 receptor
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