PCL-PU composite vascular scaffold production for vascular tissue engineering: attachment, proliferation and bioactivity of human vascular endothelial cells

M. Williamson, R.A. Black, C.M. Kielty

    Research output: Contribution to journalArticle

    193 Citations (Scopus)

    Abstract

    A new compliant scaffold suitable for small-diameter vascular grafts has been developed that promotes strong attachment of endothelial cells. Composite scaffolds were produced by wet spinning polycaprolactone (PCL) fibres which form the luminal surface, then electrospinning porous polyurethane (PU) onto the back of the PCL fibres to form the vessel wall substitute. Human endothelial cells demonstrated strong attachment to the composite PCL-PU scaffold, and proliferated to form a monolayer with strong PECAM-1 expression and cobblestone morphology. Attached cells demonstrated abundant release of von Willebrand factor, nitric oxide and ICAM-1 under physiological stimuli, and exhibited an immune response to lipopolysaccharide. The composite scaffold may also deliver bioactive molecules. Active trypsin, used as a test molecule, had a defined 48 h pattern of release from luminal PCL fibres. These data confirm the potential of this novel composite scaffold in vascular tissue engineering.
    Original languageEnglish
    Pages (from-to)3608-3616
    Number of pages8
    JournalBiomaterials
    Volume27
    Issue number19
    DOIs
    Publication statusPublished - 2006

    Keywords

    • polycaprolactone
    • polyurethane
    • vascular tissue engineering
    • endothelial cells
    • bioengineering

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