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Synthesis, Analytical Characterization, and Osteoblast Adhesion Properties on RGD-grafted Polypyrrole Coatings on Titanium Substrates

Synthesis, Analytical Characterization, and Osteoblast Adhesion Properties on RGD-grafted Polypyrrole Coatings on Titanium Substrates

E De Giglio, L Sabbatini, S Colucci, G Zambonin

J Biomater Sci Polym Ed. 2000;11(10):1073-83.

PMID: 11211158

Abstract:

The covalent attachment of an Arg-Gly-Asp (RGD) containing peptide to polypyrrole(PPy)-coated titanium substrates has been investigated in order to develop a bioactive material of potential use in orthopedic fields. Polypyrrole has been employed as the coating polymer because of its suitability to be electrochemically grown directly onto metallic substrates of different shapes, leading to remarkably adherent films. The synthetic peptide Cys-Gly-(Arg-Gly-Asp)-Ser-Pro-Lys, containing the cell-adhesive region of fibronectin (RGD), has been grafted to the polymer substrate via the cysteine residue using a procedure recently developed in the authors laboratory. The effectiveness of grafting was monitored by X-ray photoelectron spectroscopy (XPS), which assessed the presence of the peptide grafted onto the polymer surface exploiting the cysteine sulfur as target element. Neonatal rat calvarial osteoblasts were attached to RGD-modified PPy-coated Ti substrates at levels significantly greater than on unmodified PPy-coated Ti and glass coverslip substrates.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP111119289	Gly-Arg-Gly-Asp-Ser-Pro-Lys		111119-28-9	Price

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