4.2 Article Proceedings Paper

Three-Dimensional Ingrowth of Bone Cells Within Biodegradable Cryogel Scaffolds in Bioreactors at Different Regimes

Journal

TISSUE ENGINEERING PART A
Volume 14, Issue 10, Pages 1743-1750

Publisher

MARY ANN LIEBERT, INC
DOI: 10.1089/ten.tea.2007.0277

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Three-dimensional cell ingrowth within biodegradable cryogel scaffolds made of cross-linked 2-hydroxyethyl methacrylate (HEMA)-lactate-dextran with interconnected macropores was studied in bioreactors at different regimes (static, perfusion, and compression-perfusion). An osteoblast-like cell line (MG63) was used in these studies. The samples taken after selected times from the bioreactors were examined by microscopy techniques (light, SEM, TEM, and laser scanning confocal). The cell culture conditions were found to have a significant impact not only on the cell morphology, such as the extent of cell attachment and ingrowth, but also on cellular activities. Dynamic conditions (perfusion and/or compression) greatly improved cell ingrowth and extracellular matrix (ECM) synthesis. Alkaline phosphatase activity results confirmed the positive effect of dynamic conditions on bone cells.

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