title: Heparin-carrying polystyrene (HCPS)-bound collagen substratum to immobilize heparin-binding growth factors and to enhance cellular growth.
abstract: Heparin-carrying polystyrene (HCPS), consisting of low molecular weight heparin chains linked to a synthetic polystyrene core, is able to attach to polymeric surfaces. In this study, HCPS has efficiently bound to collagen-coated micro-plates and collagen membranes thereby retaining the binding of heparin-binding growth factors, such as vascular endothelial growth factor (VEGF)(165) or fibroblast growth factor (FGF)-2. Both human skin fibroblast cells and human umbilical vein endothelial cells have shown a good adherence to both collagen- and HCPS-bound collagen substrata. The growth rate of the fibroblast cells on the HCPS-bound collagen substratum in the presence of low concentrations of FGF-2 is higher than on a collagen surface. The fibroblast cells grow at a significantly higher rate on the HCPS-bound collagen substratum retained with FGF-2. Similarly, the growth rate of the endothelial cells on the HCPS-bound collagen substrata in the presence of low concentrations of either FGF-2 or VEGF(165) is higher than on collagen. The endothelial cells also grow at a significantly higher rate on the HCPS-bound collagen substratum retained with either FGF-2 or VEGF(165). These results indicate that HCPS-bound collagen substrata with various bioactive heparin-binding molecules may provide novel biomaterials controlling cellular activities such as growth and differentiation.
authors.affiliation: National Defense Medical College, Research Institute, Division of Biomedical Engineering, 3-2 Namiki, Tokorozawa, Saitama 359-8513, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ishihara
authors.forename: M
authors.initials: M
authors.lastname: Sato
authors.forename: H
authors.initials: H
authors.lastname: Hattori
authors.forename: Y
authors.initials: Y
authors.lastname: Saito
authors.forename: H
authors.initials: H
authors.lastname: Yura
authors.forename: K
authors.initials: K
authors.lastname: Ono
authors.forename: K
authors.initials: K
authors.lastname: Masuoka
authors.forename: M
authors.initials: M
authors.lastname: Kikuchi
authors.forename: K
authors.initials: K
authors.lastname: Fujikawa
authors.forename: A
authors.initials: A
authors.lastname: Kurita
mesh_terms: D001672:Biocompatible Materials; D002448:Cell Adhesion; D002455:Cell Division / Q000187:drug effects; D002478:Cells, Cultured; D018914:Cells, Immobilized; D003094:Collagen; D016228:Endothelial Growth Factors / Q000494:pharmacology; D004730:Endothelium, Vascular / Q000254:growth & development; D016222:Fibroblast Growth Factor 2 / Q000494:pharmacology; D006493:Heparin; D006801:Humans; D008222:Lymphokines / Q000494:pharmacology; D011137:Polystyrenes; D042461:Vascular Endothelial Growth Factor A; D042442:Vascular Endothelial Growth Factors
chemical_list: D001672:Biocompatible Materials; D016228:Endothelial Growth Factors; D008222:Lymphokines; D011137:Polystyrenes; C467484:VEGFA protein, human; D042461:Vascular Endothelial Growth Factor A; D042442:Vascular Endothelial Growth Factors; D016222:Fibroblast Growth Factor 2; D006493:Heparin; D003094:Collagen