ArticleMedical & biological engineering & computing2026
Influence of cell culture parameters on oxygen diffusion and cell distribution in 3D-porous scaffolds for bone tissue engineering: finite element modeling and experimental verification.
Article in Medical & biological engineering & computing, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Successful bone tissue engineering using 3D-porous scaffolds is hampered by insufficient oxygen diffusion and non-uniform cell distribution, which are determined by cell culture parameters. Here we aimed to investigate the influence of cell culture parameters on oxygen diffusion and cell distribution in 3D-porous scaffolds during 15-days by finite-element (FE) modeling. Osteosarcoma cells were cultured in 3D-porous silk scaffolds under 0.05, 0.12, and 0.2 mol/m3 medium-oxygen to validate FE modeling. Oxygen concentration in scaffolds decreased by enhancing initial cell number seeded, medium-oxygen concentration, and maximum specific cell growth rate, while it increased by enhancing cell motility-coefficient and molecular diffusivity of oxygen-in-the-cell-phase. Cell density increased by enhancing medium-oxygen concentration, maximum specific cell growth rate, cell motility-coefficient, and molecular diffusivity of oxygen-in-the-cell-phase, while it decreased by enhancing initial cell seeding number. The FE modeling results of cell proliferation in scaffolds were not significantly (< 8%) different from experimental results, indicating that FE modeling data were in good agreement with experimental results. In conclusion, initial cell number seeded, medium-oxygen concentration, and maximum specific cell growth rate, but not cell motility-coefficient or molecular diffusivity of oxygen-in-the-cell-phase, are crucial for creating densely cell-populated constructs with uniform cell distribution in 3D-porous scaffolds, informing future scaffold-based bone regeneration strategies.
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