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• W2136213501 abstract "Metal-based scaffolds such as stents are the most preferred treatment methods for coronary artery disease. However, impaired endothelialization on the luminal surface of the stents is a major limitation occasionally leading to catastrophic consequences in the long term. Coating the stent surface with relevant bioactive molecules is considered to aid in recovery of endothelium around the wound site. However, this strategy remains challenging due to restrictions in availability of proper bioactive signals that will selectively promote growth of endothelium and the lack of convenience for immobilization of such signaling molecules on the metal surface. In this study, we developed self-assembled peptide nanofibers that mimic the native endothelium extracellular matrix and that are securely immobilized on stainless steel surface through mussel-inspired adhesion mechanism. We synthesized Dopa-conjugated peptide amphiphile and REDV-conjugated peptide amphiphile that are self-assembled at physiological pH. We report that Dopa conjugation enabled nanofiber coating on stainless steel surface, which is the most widely used backbone of the current stents. REDV functionalization provided selective growth of endothelial cells on the stainless steel surface. Our results revealed that adhesion, spreading, viability and proliferation rate of vascular endothelial cells are remarkably enhanced on peptide nanofiber coated stainless steel surface compared to uncoated surface. On the other hand, although vascular smooth muscle cells exhibited comparable adhesion and spreading profile on peptide nanofibers, their viability and proliferation significantly decreased. Our design strategy for surface bio-functionalization created a favorable microenvironment to promote endothelial cell growth on stainless steel surface, thereby providing an efficient platform for bioactive stent development for long term treatment of cardiovascular diseases." @default.
• W2136213501 created "2016-06-24" @default.
• W2136213501 creator A5023244283 @default.
• W2136213501 creator A5028351684 @default.
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• W2136213501 date "2011-12-01" @default.
• W2136213501 modified "2023-09-23" @default.
• W2136213501 title "Selective adhesion and growth of vascular endothelial cells on bioactive peptide nanofiber functionalized stainless steel surface" @default.
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• W2136213501 doi "https://doi.org/10.1016/j.biomaterials.2011.08.018" @default.
• W2136213501 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21885121" @default.
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