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Foxf2 Is Required for Brain Pericyte Differentiation and Development and Maintenance of the Blood-Brain Barrier
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2015 (English)In: Developmental Cell, ISSN 1534-5807, E-ISSN 1878-1551, Vol. 34, no 1, 19-32 p.Article in journal (Refereed) Published
Abstract [en]

Pericytes are critical for cerebrovascular maturation and development of the blood-brain barrier (BBB), but their role in maintenance of the adult BBB, and how CNS pericytes differ from those of other tissues, is less well understood. We show that the forkhead transcription factor Foxf2 is specifically expressed in pericytes of the brain and that Foxf2(-/-) embryos develop intracranial hemorrhage, perivascular edema, thinning of the vascular basal lamina, an increase of luminal endothelial caveolae, and a leaky BBB. Foxf2(-/-) brain pericytes were more numerous, proliferated faster, and expressed significantly less Pdgfr beta. Tgf beta-Smad2/3 signaling was attenuated, whereas phosphorylation of Smad1/5 and p38 were enhanced. Tgf beta pathway components, including Tgf beta 2, Tgf beta r2, Alk5, and integrins alpha(V)beta(8), were reduced. Foxf2 inactivation in adults resulted in BBB breakdown, endothelial thickening, and increased trans-endothelial vesicular transport. On the basis of these results, FOXF2 emerges as an interesting candidate locus for stroke susceptibility in humans.

Place, publisher, year, edition, pages
2015. Vol. 34, no 1, 19-32 p.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-259654DOI: 10.1016/j.devcel.2015.05.008ISI: 000357649300004PubMedID: 26120030OAI: oai:DiVA.org:uu-259654DiVA: diva2:847527
Funder
Swedish Cancer Society
Note

Funding: Swedish Medical Research Council 

Available from: 2015-08-20 Created: 2015-08-10 Last updated: 2017-12-04Bibliographically approved

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Pontén, Fredrik

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