alexa Human endothelial progenitor cell attachment to polysaccharide-based hydrogels: a pre-requisite for vascular tissue engineering.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Tissue Science & Engineering

Author(s): Thbaud NB, Pierron D, Bareille R, Le Visage C, Letourneur D,

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Abstract A hydrogel was prepared from polysaccharides (pullulan/dextran/fucoidan) and evaluated as a novel biomaterial for Endothelial Progenitor Cell (EPC) culture. Using a cross-linking process with sodium trimetaphosphate in aqueous solution, homogeneous, transparent and easy to handle gels were obtained with a water content higher than 90\%. Circular scaffolds (6 mm diameter and 2 mm thickness discs) were used for cell culture. Different types of EPCs were used: CD34+ derived ECs from cord blood and two sorts of CD133+ derived ECs from human bone marrow, old (30 days) and young (4 days) cells. EPCs were characterised as endothelial cells by immunofluorescent stainings for CD31 and Dil-Ac-LDL. CD133+ derived ECs from bone marrow were characterized by RT-PCR for CD31, VE-cadherin and KDR. HSVECs (Human Saphenous Vein Endothelial Cells) were used as control cells. We evaluated whether different kinds of EPCs could adhere on this novel hydrogel 4 h and 24 h after seeding, by a colorimetric quantitative test. EPCs adhered to hydrogels in serum- free conditions with values being over than 80\% for young CD133+ cells at 4 h and 24 h. This pullulan-based hydrogel could constitute a suitable support for vascular cell adhesion as a pre-requisite for vascular tissue engineering. This article was published in J Mater Sci Mater Med and referenced in Journal of Tissue Science & Engineering

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