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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2017 ; 8
(ä): 16002
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The endothelial transcription factor ERG mediates Angiopoietin-1-dependent
control of Notch signalling and vascular stability
#MMPMID28695891
Shah AV
; Birdsey GM
; Peghaire C
; Pitulescu ME
; Dufton NP
; Yang Y
; Weinberg I
; Osuna Almagro L
; Payne L
; Mason JC
; Gerhardt H
; Adams RH
; Randi AM
Nat Commun
2017[Jul]; 8
(ä): 16002
PMID28695891
show ga
Notch and Angiopoietin-1 (Ang1)/Tie2 pathways are crucial for vascular maturation
and stability. Here we identify the transcription factor ERG as a key regulator
of endothelial Notch signalling. We show that ERG controls the balance between
Notch ligands by driving Delta-like ligand 4 (Dll4) while repressing Jagged1
(Jag1) expression. In vivo, this regulation occurs selectively in the maturing
plexus of the mouse developing retina, where Ang1/Tie2 signalling is active. We
find that ERG mediates Ang1-dependent regulation of Notch ligands and is required
for the stabilizing effects of Ang1 in vivo. We show that Ang1 induces ERG
phosphorylation in a phosphoinositide 3-kinase (PI3K)/Akt-dependent manner,
resulting in ERG enrichment at Dll4 promoter and multiple enhancers. Finally, we
demonstrate that ERG directly interacts with Notch intracellular domain (NICD)
and ?-catenin and is required for Ang1-dependent ?-catenin recruitment at the
Dll4 locus. We propose that ERG coordinates Ang1, ?-catenin and Notch signalling
to promote vascular stability.
|*Vascular Remodeling
[MESH]
|Adaptor Proteins, Signal Transducing
[MESH]
|Angiopoietin-1/*metabolism
[MESH]
|Animals
[MESH]
|Calcium-Binding Proteins
[MESH]
|Female
[MESH]
|Human Umbilical Vein Endothelial Cells
[MESH]
|Humans
[MESH]
|Intercellular Signaling Peptides and Proteins/metabolism
[MESH]