title: Covalent RGD modification of the inner pore surface of polycaprolactone scaffolds.
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.
authors: a Department of Cardiothoracic and Vascular Surgery, Johannes Gutenberg-University School of Medicine, Langenbeckstr. 1, B 505, 55131 Mainz, Germany. mgabriel@uni-mainz.de.
authors: Matthias
authors: M
authors: Gabriel
authors: Kamran
authors: K
authors: Nazmi
authors: Manfred
authors: M
authors: Dahm
authors: Andrej
authors: A
authors: Zentner
authors: Christian-Friedrich
authors: CF
authors: Vahl
authors: Dennis
authors: D
authors: Strand
mesh_terms: D000123:Acetyltransferases / Q000737:chemistry; D040761:Biomimetic Materials / Q000138:chemical synthesis* / Q000737:chemistry*; D002448:Cell Adhesion; D049109:Cell Proliferation; D042783:Endothelial Cells / Q000166:cytology / Q000502:physiology; D005347:Fibroblasts / Q000166:cytology / Q000502:physiology; D006358:Hot Temperature; D006801:Humans; D057927:Hydrophobic and Hydrophilic Interactions; D008422:Materials Testing; D015394:Molecular Structure; D010011:Osteocytes / Q000166:cytology / Q000502:physiology; D011091:Polyesters / Q000737:chemistry*; D016062:Porosity; D012492:Salts / Q000737:chemistry; D023822:Tissue Engineering / Q000379:methods*; D054457:Tissue Scaffolds / Q000737:chemistry*; D014867:Water / Q000737:chemistry; D000099228:Diamine N-Acetyltransferase
chemical_list: D000123:Acetyltransferases; D011091:Polyesters; D012492:Salts; D014867:Water; D000099228:Diamine N-Acetyltransferase; C016240:polycaprolactone