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Three-Dimensional Cell Growth on Structures Fabricated from ORMOCER® by Two-Photon Polymerization TechniqueInstitute of Biophysics, University Hannover, Herrenhäuserstr. 2, D-30419 Hannover, Germany
Institute of Biophysics, University Hannover, Herrenhäuserstr. 2, D-30419 Hannover, Germany, ngezahayo{at}biophysik.uni-hannover.de
Laser Zentrum Hannover e.V., Hollerithallee 8, D-30419 Hannover, Germany
Zentrum für Biomedizintechnik, Universität Hannover, Lise-Meitner-Str. 1 D-30823 Garbsen, Germany
Institute of Biophysics, University Hannover, Herrenhäuserstr. 2, D-30419 Hannover, Germany
Zentrum für Biomedizintechnik, Universität Hannover, Lise-Meitner-Str. 1 D-30823 Garbsen, Germany
Laser Zentrum Hannover e.V., Hollerithallee 8, D-30419 Hannover, Germany Two-photon polymerization technique was applied to generate three-dimensional (3D) scaffold-like structures using the photosensitive organic—inorganic hybrid polymer ORMOCER®. The structures were studied with respect to potential applications as scaffold for tissue engineering. Cell counting and comet assay, respectively, demonstrated that doubling time and DNA strand breaks of CHO cells, GFSHR-17 granulosa cells, GM-7373 endothelial cells, and SH-SY5Y neuroblastoma cells were not affected by ORMOCER®. ORMOCER® related alteration of formation of tissue specific cell-to-cell adhesions like gap junctions was ruled out by double whole-cell patch-clamp technique. Additionally, growth of cells on the vertical surfaces of 3D structures composed of ORMOCER® is shown.
Key Words: tissue engineering two-photon polymerization ORMOCER® 3D scaffolds gap junction comet assay DNA strand breaks.
This version was published on November
1, 2007 Journal of Biomaterials Applications, Vol. 22, No. 3,
275-287 (2007) |
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