Notch signaling and taxis mechanims regulate early stage angiogenesis: A mathematical and computational model.

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ID: 90773
2020
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Abstract
During angiogenesis, new blood vessels sprout and grow from existing ones. This process plays a crucial role in organ development and repair, in wound healing and in numerous pathological processes such as cancer progression or diabetes. Here, we present a mathematical model of early stage angiogenesis that permits exploration of the relative importance of mechanical, chemical and cellular cues. Endothelial cells proliferate and move over an extracellular matrix by following external gradients of Vessel Endothelial Growth Factor, adhesion and stiffness, which are incorporated to a Cellular Potts model with a finite element description of elasticity. The dynamics of Notch signaling involving Delta-4 and Jagged-1 ligands determines tip cell selection and vessel branching. Through their production rates, competing Jagged-Notch and Delta-Notch dynamics determine the influence of lateral inhibition and lateral induction on the selection of cellular phenotypes, branching of blood vessels, anastomosis (fusion of blood vessels) and angiogenesis velocity. Anastomosis may be favored or impeded depending on the mechanical configuration of strain vectors in the ECM near tip cells. Numerical simulations demonstrate that increasing Jagged production results in pathological vasculatures with thinner and more abundant vessels, which can be compensated by augmenting the production of Delta ligands.
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vega2020notchplos Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Vega, Rocío;Carretero, Manuel;Travasso, Rui D M;Bonilla, Luis L;
Journal PLoS computational biology
Year 2020
DOI
10.1371/journal.pcbi.1006919
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Keywords
climate policy ethics leadership climate crisis health impacts health care industry

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