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- W1992230320 abstract "Poly(ethylene oxide) (PEO) with terminal alkyne and amino groups was grafted to a poly(glycidyl methacrylate) (PGMA) anchoring layer and the PEO/PGMA coatings were investigated as a non-fouling platform for the assessment of ligand–cell receptor interactions. The PEO/PGMA coatings deposited on Si/SiO2 substrate were stable in phosphate buffered saline over a period of 8 days if the thickness of the PEO was less than 30 nm. The stability of the coating could be enhanced by an additional layer of 3-mercaptopropyltrimethoxysilane between the substrate and the PGMA layer. The grafted layers were shown to efficiently suppress nonspecific protein adsorption and cell adhesion. Based on the theoretical ligand-binding capacity, protein adsorption and stability data, the optimum thickness range of the PEO layer is 10–20 nm. The binding of an arginine–glycine–aspartic acid (RGD) ligand using azide–alkyne click chemistry demonstrated that the ligand surface density is controllable in the range from 100 pmol/cm2 up to the capacity of the grafted layer of 102 pmol/cm2 by varying the ligand concentration in the reaction mixture. Calf pulmonary artery endothelial cells adhered to and spread on ligand modified layers proportionally to the ligand surface density, thus demonstrating the applicability of these “grafted to” PEO brushes as a platform for cell receptor–ligand engagement studies." @default.
- W1992230320 created "2016-06-24" @default.
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- W1992230320 date "2014-09-01" @default.
- W1992230320 modified "2023-10-17" @default.
- W1992230320 title "Poly(ethylene oxide) brushes prepared by the “grafting to” method as a platform for the assessment of cell receptor–ligand binding" @default.
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- W1992230320 doi "https://doi.org/10.1016/j.eurpolymj.2014.06.004" @default.
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