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2015 ; 5
(ä): 16449
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Combined deficiency of Notch1 and Notch3 causes pericyte dysfunction, models
CADASIL, and results in arteriovenous malformations
#MMPMID26563570
Kofler NM
; Cuervo H
; Uh MK
; Murtomäki A
; Kitajewski J
Sci Rep
2015[Nov]; 5
(ä): 16449
PMID26563570
show ga
Pericytes regulate vessel stability and pericyte dysfunction contributes to
retinopathies, stroke, and cancer. Here we define Notch as a key regulator of
pericyte function during angiogenesis. In Notch1(+/-); Notch3(-/-) mice, combined
deficiency of Notch1 and Notch3 altered pericyte interaction with the endothelium
and reduced pericyte coverage of the retinal vasculature. Notch1 and Notch3 were
shown to cooperate to promote proper vascular basement membrane formation and
contribute to endothelial cell quiescence. Accordingly, loss of pericyte function
due to Notch deficiency exacerbates endothelial cell activation caused by Notch1
haploinsufficiency. Mice mutant for Notch1 and Notch3 develop arteriovenous
malformations and display hallmarks of the ischemic stroke disease CADASIL. Thus,
Notch deficiency compromises pericyte function and contributes to vascular
pathologies.