Bone morphogenetic protein and blood vessels new insights into endothelial cell junction regulationBautch, Victoria L.Current Opinion in Hematology: May 2019 - Volume 26 - Issue 3 - p 154–160 doi: 10.1097/MOH.0000000000000492 VASCULAR BIOLOGY: Edited by M. Luisa Iruela-Arispe Buy Abstract Author InformationAuthors Article MetricsMetrics Purpose of review BMP signaling is an important regulator of vascular development and homeostasis, and perturbations of BMP pathway components are linked to vascular disease. However, until recently BMP's broad requirements in many developmental programs delayed cause-and-effect and mechanistic studies of its vascular role in vivo. This review covers recent findings that illuminate the role of BMP signaling in endothelial cells of blood vessels, and highlights effects of BMP signaling on endothelial cell junctions and vascular barrier function. Recent findings BMP signaling in endothelial cells of blood vessels is context-dependent, and can either be pro-angiogenic and promote vascular sprouting, or antiangiogenic and promote vascular homeostasis. I discuss how distinct BMP signaling inputs impact blood vessel formation and function, with emphasis on new studies that investigate how BMP signaling affects endothelial cell junctions and vascular permeability. Summary BMP signaling is important but complex in endothelial cells of blood vessels, with multiple distinct inputs leading to opposing cellular behaviors and phenotypic outputs in ways that are poorly understood. Endothelial cell–cell junctions are a target of BMP signaling, and junction stability can be tuned in either direction by BMP inputs. Several human diseases have perturbed junctions linked to BMP signaling changes. Department of Biology, McAllister Heart Institute, Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, USA Correspondence to Victoria L. Bautch, PhD, Professor of Biology, Department of Biology, McAllister Heart Institute, Lineberger Comprehensive Cancer Center, CB#3280, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. Tel: +1 919 966 6797; fax: +1 919 962 4574; e-mail: email@example.com Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.