Neural Stem Cell Spreading on Lipid Based Artificial Cell Surfaces, Characterized by Combined X-ray and Neutron Reflectometry
نویسندگان
چکیده
We developed a bioadhesive coating based on a synthetic peptide-conjugate (AK-cyclo[RGDfC]) which contains multiples of the arginyl-glycyl-aspartic acid (RGD) amino acid sequence. Biotinylated AK-cyclo[RGDfC] is bound to a supported lipid bilayer via a streptavidin interlayer. Layering, hydration and packing of the coating is quantified by X-ray and neutron reflectometry experiments. AK-cyclo[RGDfC] binds to the streptavidin interlayer in a stretched-out on edge configuration. The highly packed configuration with only 12% water content maximizes the number of accessible adhesion sites. Enhanced cell spreading of neural stem cells was observed for AK-cyclo[RGDfC] functionalized bilayers. Due to the large variety of surfaces which can be coated by physisorption of lipid bilayers, this approach is of general interest for the fabrication of biocompatible surfaces.
منابع مشابه
X-ray and neutron scattering study of organic-organic heterolayers for organic electronics and biointerfaces
We develop a bioadhesive coating based on a synthetic peptide-conjugate (AK-cyclo[RGDfC])which contains multiples of the arginyl-glycyl-aspartic acid (RGD) amino acid sequence.Biotinated AK-cyclo[RGDfC] is bound to a supported lipid bilayer via a streptavidin inter-layer. Layering, hydration and packing of the coating is quantified by x-ray and neutronreflectometry experimen...
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