title: Preparation of avidin-labelled gelatin nanoparticles as carriers for biotinylated peptide nucleic acid (PNA).
abstract: The possibility of preparing uniform nanoparticles consisting of proteins such as gelatin followed by covalent linkage of avidin was investigated. Gelatin nanoparticles were prepared by two step desolvation. Functional groups at the surface of the particulate system were quantified with site-specific reagents. The surface of the nanoparticles was thiolated and avidin was covalently attached to the nanoparticles via a bifunctional spacer at high levels. Biotinylated peptide nucleic acid (PNA) was effectively complexed by the avidin-conjugated nanoparticles. Avidin-conjugated protein nanoparticles should prove as potential carrier system for biotinylated drug derivatives in antisense therapy.
authors.affiliation: Institut für Pharmazeutische Technologie, Biozentrum Niederursel, Johann Wolfgang Goethe-Universität, Marie-Curie-Strasse 9, 60439, Frankfurt am Main, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Coester
authors.forename: J
authors.initials: J
authors.lastname: Kreuter
authors.forename: H
authors.initials: H
authors.lastname: von Briesen
authors.forename: K
authors.initials: K
authors.lastname: Langer
mesh_terms: D001360:Avidin; D019921:Biotinylation; D002851:Chromatography, High Pressure Liquid; D003692:Delayed-Action Preparations / Q000737:chemistry*; D004337:Drug Carriers / Q000737:chemistry; D005780:Gelatin / Q000737:chemistry*; D010316:Particle Size; D020135:Peptide Nucleic Acids / Q000737:chemistry*
chemical_list: D003692:Delayed-Action Preparations; D004337:Drug Carriers; D020135:Peptide Nucleic Acids; D001360:Avidin; D005780:Gelatin