Journal
BIOTECHNOLOGY ADVANCES
Volume 28, Issue 1, Pages 119-129Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biotechadv.2009.10.005
Keywords
Vascular grafts; Endothelial progenitor cells; Cell seeding; Endothelialization; Hemocompatibility; Restenosis
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For years intensive research has been done to improve the hemocompatibility of blood contacting vascular devices. Despite the enormous progress in physicochemical surface optimization technologies, the native endothelium still represents the ideal surface for blood contact. Numerous tissue engineering strategies aspired towards the endothelialization of graft surfaces to generate a non-thrombogenic barrier on artificial materials. A paradigm change in surface modification concepts is the in vivo endothelialization of vascular grafts by capturing circulating endothelial progenitor cells (EPCs) directly from the blood stream via biofunctionalized implant materials. Thereby, capture molecules are immobilized on artificial vascular grafts to mimic a pro-homing substrate for EPCs. In this review, different coating strategies for in vivo capturing of EPCs on synthetic implants are discussed. This therapeutic concept opens a new chapter in regenerative medicine by realizing the vision that every patient seeds his implants with his own progenitor cells to make the synthetic grafts unrecognizable for the body's rejection mechanisms. (C) 2009 Elsevier Inc. All rights reserved.
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