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Título:	Functionalization of CoCr surfaces with cell adhesive peptides to promote HUVECs adhesion and proliferation
Autor/a:	Castellanos, Maria Isabel; Mas Moruno, Carlos; Grau, Anna; Serra-Picamal, Xavier; Trepat, Xavier; Albericio Palomera, Fernando; Joner, Michael; Gil Mur, Francisco Javier; Ginebra Molins, Maria Pau; Manero Planella, José María; Pegueroles Neyra, Marta
Otros autores:	Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits; Center for Research in NanoEngineering (CRNE); Deutsches Herzzentrum München; Institut de Bioenginyeria de Catalunya
Abstract:	Biomimetic surface modification with peptides that have specific cell-binding moieties is a promising approach to improve endothelialization of metal-based stents. In this study, we functionalized CoCr surfaces with RGDS, REDV, YIGSR peptides and their combinations to promote endothelial cells (ECs) adhesion and proliferation. An extensive characterization of the functionalized surfaces was performed by XPS analysis, surface charge and quartz crystal microbalance with dissipation monitoring (QCM-D), which demonstrated the successful immobilization of the peptides to the surface. Cell studies demonstrated that the covalent functionalization of CoCr surfaces with an equimolar combination of RGDS and YIGSR represents the most powerful strategy to enhance the early stages of ECs adhesion and proliferation, indicating a positive synergistic effect between the two peptide motifs. Although these peptide sequences slightly increased smooth muscle cells (SMCs) adhesion, these values were ten times lower than those observed for ECs. The combination of RGDS with the REDV sequence did not show synergistic effects in promoting the adhesion or proliferation of ECs. The strategy presented in this study holds great potential to overcome clinical limitations of current metal stents by enhancing their capacity to support surface endothelialization.
Abstract:	Peer Reviewed
Materia(s):	-Àrees temàtiques de la UPC::Enginyeria dels materials -Peptides -Chromium-copper alloys -Biomedical materials -CoCr alloy -Surface functionalization -Cell adhesive peptides -HUVEC proliferation -Endothelialization -SMCs adhesion -Pèptids -Aliatges de coure i crom -- Ús terapèutic -Materials biomèdics
Derechos:	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Tipo de documento:	Artículo - Versión presentada Artículo
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