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EGFL7 Mediates BMP9-Induced Sprouting Angiogenesis of Endothelial Cells Derived from Human Embryonic Stem Cells
Univ Iceland, BioMed Ctr, Dept Biochem & Mol Biol, Vatnsmyrarvegur 16, IS-101 Reykjavik, Iceland.
Univ Iceland, BioMed Ctr, Dept Anat, Sturlugata 8, IS-101 Reykjavik, Iceland.
Univ Iceland, BioMed Ctr, Dept Biochem & Mol Biol, Vatnsmyrarvegur 16, IS-101 Reykjavik, Iceland.
Univ Iceland, BioMed Ctr, Dept Anat, Sturlugata 8, IS-101 Reykjavik, Iceland.
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2019 (English)In: Stem Cell Reports, ISSN 2213-6711, Vol. 12, no 6, p. 1250-1259Article in journal (Refereed) Published
Abstract [en]

Human embryonic stem cells (hESCs) are instrumental in characterizing the molecular mechanisms of human vascular development and disease. Bone morphogenetic proteins (BMPs) play a pivotal role in cardiovascular development in mice, but their importance for vascular cells derived from hESCs has not yet been fully explored. Here, we demonstrate that BMP9 promotes, via its receptor ALK1 and SMAD1/5 activation, sprouting angiogenesis of hESC-derived endothelial cells. We show that the secreted angiogenic factor epidermal growth factor-like domain 7 (EGFL7) is a downstream target of BMP9-SMAD1/5-mediated signaling, and that EGFL7 promotes expansion of endothelium via interference with NOTCH signaling, activation of ERK, and remodeling of the extracellular matrix. CRISPR/Cas9-mediated deletion of EGFL7 highlights the critical role of EGFL7 in BMP9-induced endothelial sprouting and the promotion of angiogenesis. Our study illustrates the complex role of the BMP family in orchestrating hESC vascular development and endothelial sprouting.

Place, publisher, year, edition, pages
2019. Vol. 12, no 6, p. 1250-1259
National Category
Cell and Molecular Biology
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URN: urn:nbn:se:uu:diva-389592DOI: 10.1016/j.stemcr.2019.04.022ISI: 000471007700011PubMedID: 31155507OAI: oai:DiVA.org:uu-389592DiVA, id: diva2:1338940
Available from: 2019-07-25 Created: 2019-07-25 Last updated: 2019-07-25Bibliographically approved

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