6 documents found, page 1 of 1
A non-genetic model of vascular shunts informs on the cellular mechanisms of fo...
Ouarné, Marie; Pena, Andreia; Ramalho, Daniela; Conchinha, Nadine V.; Costa, Tiago; Enjalbert, Romain; Figueiredo, Ana M.; Saraiva, Marta PimentelAIMS: Arteriovenous malformations (AVMs), a disorder characterized by direct shunts between arteries and veins, are associated with genetic mutations. However, the mechanisms leading to AV shunt formation and how shunts can be reverted are poorly understood. METHODS AND RESULTS: Here, we report that oxygen-induced retinopathy (OIR) protocol leads to the consistent and stereotypical formation of AV shunts in non...
Competition for endothelial cell polarity drives vascular morphogenesis in the ...
Barbacena, Pedro; Dominguez-Cejudo, Maria; Fonseca, Catarina G.; Gómez-González, Manuel; Faure, Laura M.; Zarkada, Georgia; Pena, AndreiaBlood-vessel formation generates unique vascular patterns in each individual. The principles governing the apparent stochasticity of this process remain to be elucidated. Using mathematical methods, we find that the transition between two fundamental vascular morphogenetic programs—sprouting angiogenesis and vascular remodeling—is established by a shift of collective front-to-rear polarity of endothelial cells ...
Tyrosine-protein kinase Yes controls endothelial junctional plasticity and barr...
Jin, Yi; Ding, Yindi; Richards, Mark; Kaakinen, Mika; Giese, Wolfgang; Baumann, Elisabeth; Szymborska, Anna; Rosa, André; Nordling, SofiaVascular endothelial (VE)-cadherin in endothelial adherens junctions is an essential component of the vascular barrier, critical for tissue homeostasis and implicated in diseases such as cancer and retinopathies. Inhibitors of Src cytoplasmic tyrosine kinase have been applied to suppress VE-cadherin tyrosine phosphorylation and prevent excessive leakage, edema and high interstitial pressure. Here we show that t...
Competition for endothelial cell polarity drives vascular morphogenesis in the ...
Barbacena, Pedro; Dominguez-Cejudo, Maria Angeles; Fonseca, Catarina; Gómez-González, Manuel; Faure, Laura M.; Zarkada, Georgia; Pena, AndreiaBlood-vessel formation generates unique vascular patterns in each individual. The principles governing the apparent stochasticity of this process remain to be elucidated. Using mathematical methods, we find that the transition between two fundamental vascular morphogenetic programs-sprouting angiogenesis and vascular remodeling-is established by a shift of collective front-to-rear polarity of endothelial cells ...
On the preservation of vessel bifurcations during flow-mediated angiogenic remo...
Edgar, Lowell T.; Franco, Claudio; Gerhardt, Holger; Bernabeu, Miguel O.During developmental angiogenesis, endothelial cells respond to shear stress by migrating and remodelling the initially hyperbranched plexus, removing certain vessels whilst maintaining others. In this study, we argue that the key regulator of vessel preservation is cell decision behaviour at bifurcations. At flow-convergent bifurcations where migration paths diverge, cells must finely tune migration along both...
Computer simulations reveal complex distribution of haemodynamic forces in a mo...
Bernabeu, Miguel O.; Jones, Martin; Nielsen, Jens H.; Krüger, Timm; Nash, Rupert W.; Groen, Derek; Schmieschek, Sebastian; Hetherington, JamesThere is currently limited understanding of the role played by haemodynamic forces on the processes governing vascular development. One of many obstacles to be overcome is being able to measure those forces, at the required resolution level, on vessels only a few micrometres thick. In this paper, we present an in silico method for the computation of the haemodynamic forces experienced by murine retinal vasculat...