Regulation of signaling interactions and receptor endocytosis in growing blood vessels
Identifieur interne : 002583 ( Main/Exploration ); précédent : 002582; suivant : 002584Regulation of signaling interactions and receptor endocytosis in growing blood vessels
Auteurs : Mara E. Pitulescu ; Ralf H. AdamsSource :
- Cell Adhesion & Migration [ 1933-6918 ] ; 2014.
Abstract
Blood vessels and the lymphatic vasculature are extensive tubular networks formed by endothelial cells that have several indispensable functions in the developing and adult organism. During growth and tissue regeneration but also in many pathological settings, these vascular networks expand, which is critically controlled by the receptor EphB4 and the ligand ephrin-B2. An increasing body of evidence links Eph/ephrin molecules to the function of other receptor tyrosine kinases and cell surface receptors. In the endothelium, ephrin-B2 is required for clathrin-dependent internalization and full signaling activity of VEGFR2, the main receptor for vascular endothelial growth factor. In vascular smooth muscle cells, ephrin-B2 antagonizes clathrin-dependent endocytosis of PDGFRβ and controls the balanced activation of different signal transduction processes after stimulation with platelet-derived growth factor. This review summarizes the important roles of Eph/ephrin molecules in vascular morphogenesis and explains the function of ephrin-B2 as a molecular hub for receptor endocytosis in the vasculature.
Url:
DOI: 10.4161/19336918.2014.970010
PubMed: 25482636
PubMed Central: 4594521
Affiliations:
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