Combined deficiency of Notch1 and Notch3 causes pericyte dysfunction, models CADASIL, and results in arteriovenous malformations.

Abstract:

: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.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Kofler NM,Cuervo H,Uh MK,Murtomäki A,Kitajewski J

doi

10.1038/srep16449

subject

Has Abstract

pub_date

2015-11-13 00:00:00

pages

16449

issn

2045-2322

pii

srep16449

journal_volume

5

pub_type

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