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Control of microenvironmental cues with a smart biomaterial composite promotes endothelial progenitor cell angiogenesis
Aguirre, Adrián; Gonzalez, Arlyng; Navarro, Melba; Castaño Linares, Óscar; Planell Estany, Josep Anton; Engel López, Elisabeth
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. BIBITE - Biomaterials, Biomecànica i Enginyeria de Teixits
Smart biomaterials play a key role when aiming at successful tissue repair by means of regenerative medicine approaches, and are expected to contain chemical as well as mechanical cues that will guide the regenerative process. Recent advances in the understanding of stem cell biology and mechanosensing have shed new light onto the importance of the local microenvironment in determining cell fate. Herein we report the biological properties of a bioactive, biodegradable calcium phosphate glass/polylactic acid composite biomaterial that promotes bone marrowderived endothelial progenitor cell (EPC) mobilisation, differentiation and angiogenesis through the creation of a controlled bone healing-like microenvironment. The angiogenic response is triggered by biochemical and mechanical cues provided by the composite, which activate two synergistic cell signalling pathways: a biochemical one mediated by the calcium-sensing receptor and a mechanosensitive one regulated by non-muscle myosin II contraction. Together, these signals promote a synergistic response by activating EPCs-mediated VEGF and VEGFR-2 synthesis, which in turn promote progenitor cell homing, differentiation and tubulogenesis. These findings highlight the importance of controlling microenvironmental cues for stem/progenitor cell tissue engineering and offer exciting new therapeutical opportunities for biomaterialbased vascularisation approaches and clinical applications
Àrees temàtiques de la UPC::Enginyeria biomèdica::Biomaterials
Àrees temàtiques de la UPC::Ciències de la salut::Medicina::Medicina interna
Calcium phosphate
Biomedical materials
Calcium phosphate glass composite
smart biomaterial
endothelial progenitor cell
angiogenesis
mechanosensing
calcium-sensing receptor
Biomaterials
Enginyeria biomèdica
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
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