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To understand its role in placental development, we established a novel Egfl7 knockout mouse. The mutant mice have gross defects in chorioallantoic branching morphogenesis and placental vascular patterning. Microangiography and 3D imaging revealed patchy perfusion of Egfl7\u2212\/\u2212 placentas marked by impeded blood conductance through sites of narrowed vessels. Consistent with poor feto-placental perfusion, Egfl7 knockout resulted in reduced placental weight and fetal growth restriction. The placentas also showed abnormal fetal vessel patterning and &amp;gt;50% reduction in fetal blood space. In vitro, placental endothelial cells were deficient in migration, cord formation, and sprouting. Expression of genes involved in branching morphogenesis, Gcm1, SynA, and SynB, and patterning of the extracellular matrix, Mmrn1, were temporally dysregulated in the placentas. Egfl7 knockout did not affect expression of the microRNA embedded within intron 7. Collectively, these data reveal that Egfl7 is critical for placental vascularization and embryonic growth, and may provide insight into etiological factors underlying placental pathologies associated with intrauterine growth restriction, a significant cause of infant morbidity and mortality.<\/jats:p>","DOI":"10.1242\/dev.147025","type":"journal-article","created":{"date-parts":[[2017,5,20]],"date-time":"2017-05-20T00:35:13Z","timestamp":1495240513000},"source":"Crossref","is-referenced-by-count":20,"title":["Altered feto-placental vascularization, feto-placental malperfusion, and fetal growth restriction in mice with Egfl7 loss-of-function"],"prefix":"10.1242","author":[{"given":"Lauretta A.","family":"Lacko","sequence":"first","affiliation":[{"name":"Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, Box 60, New York, NY 10065, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Romulo","family":"Hurtado","sequence":"additional","affiliation":[{"name":"Department of Physiology and Biophysics, Weill Cornell Medical College, 1300 York Avenue, Box 60, New York, NY 10065, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samantha","family":"Hinds","sequence":"additional","affiliation":[{"name":"Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, Box 60, New York, NY 10065, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael G.","family":"Poulos","sequence":"additional","affiliation":[{"name":"Department of Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 60, New York, NY 10065, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jason M.","family":"Butler","sequence":"additional","affiliation":[{"name":"Department of Medicine, Weill Cornell Medical College, 1300 York Avenue, Box 60, New York, NY 10065, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7217-768X","authenticated-orcid":false,"given":"Heidi","family":"Stuhlmann","sequence":"additional","affiliation":[{"name":"Department of Cell and Developmental Biology, Weill Cornell Medical College, 1300 York Avenue, Box 60, New York, NY 10065, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"237","published-online":{"date-parts":[[2017,1,1]]},"reference":[{"key":"2021042608595581700_DEV147025C1","doi-asserted-by":"publisher","first-page":"311","DOI":"10.1038\/77076","article-title":"The glial cells missing-1 protein is essential for branching morphogenesis in the chorioallantoic placenta","volume":"25","author":"Anson-Cartwright","year":"2000","journal-title":"Nat. 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