Gradient micropattern immobilization of heparin and its interaction with cells.
Heparin was immobilized on a polystyrene plate in a graded micropattern by photolithography. The micropattern was confirmed by staining with brilliant green. In the presence of basic fibroblast growth factor (bFGF), the growth of NIH3T3 cells was enhanced only in the heparin-immobilized regions. This result indicated that gradient-micropattern-immobilized heparin activated bFGF for cell growth. In addition, the growth of cells was found to be affected by the surface density of immobilized heparin. The surface density was regulated by a gap length of 2 microm-width stripes immobilized with heparin. Although a high density (a region having short gap length) of immobilized heparin suppressed the cell growth in the absence of bFGF, it enhanced cell growth in the presence of bFGF. The dependence of cell function on the density of immobilized heparin was visualized by gradient-micropattern-immobilization.
Ito
Y
Y
Department of Biological Science and Technology, Faculty of Engineering, The University of Tokushima, Japan.
Hayashi
M
M
Imanishi
Y
Y
D016475:3T3 Cells; D000814:Aniline Compounds; D000818:Animals; D001391:Azo Compounds; D001672:Biocompatible Materials / Q000494:pharmacology; D002455:Cell Division / Q000187:drug effects; D016222:Fibroblast Growth Factor 2 / Q000494:pharmacology; D006493:Heparin / Q000494:pharmacology; D008422:Materials Testing; D051379:Mice; D011137:Polystyrenes; D013499:Surface Properties
D000814:Aniline Compounds; D001391:Azo Compounds; D001672:Biocompatible Materials; D011137:Polystyrenes; D016222:Fibroblast Growth Factor 2; C070827:4-azidoaniline; D006493:Heparin