Covalent RGD modification of the inner pore surface of polycaprolactone scaffolds

Matthias Gabriel, Kamran Nazmi, Manfred Dahm, Andrej Zentner, Christian Friedrich Vahl, Dennis Strand

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    15 Citations (Scopus)

    Abstract

    Scaffold production for tissue engineering was demonstrated by means of a hot compression molding technique and subsequent particulate leaching. The utilization of spherical salt particles as the pore-forming agent ensured complete interconnectivity of the porous structure. This method obviated the use of potentially toxic organic solvents. To overcome the inherent non-cell-adhesive properties of the hydrophobic polymer polycaprolactone (PCL) surface activation with a diamine was performed, followed by the covalent immobilization of the adhesion-promoting RGD-peptide. The wet-chemical approach was performed to guarantee modification throughout the entire scaffold structure. The treatment was characterized by means of chemical and physical methods with respect to an exclusive surface modification without altering the bulk properties of the polymer. RGD-modified scaffolds were tested in cell-culture experiments to investigate the initial attachment and the proliferation of three different cell types.

    Original languageEnglish
    Pages (from-to)941-953
    Number of pages13
    JournalJournal of Biomaterials Science, Polymer Edition
    Volume23
    Issue number7
    DOIs
    Publication statusPublished - 2012

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    Keywords

    • BIOMIMETIC MATERIAL
    • CONFOCAL MICROSCOPY
    • POLYCAPROLACTONE
    • RGD PEPTIDE
    • SCAFFOLD
    • SURFACE MODIFICATION

    ASJC Scopus subject areas

    • Biophysics
    • Bioengineering
    • Biomaterials
    • Biomedical Engineering

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