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Updated: May 21, 2026

Analysis of Minerals Produced by hFOB 1.19 and Saos-2 Cells Using Transmission Electron Microscopy with Energy Dispersive X-ray Microanalysis
Published on: June 24, 2018
Osteoblast-like cellular response to dynamic changes in the ionic extracellular environment produced by
J Gustavsson1, M P Ginebra, J Planell
1Institute for Bioengineering of Catalonia, Baldiri Reixac 15-21, 08028 Barcelona, Spain.
Calcium phosphate biomaterials influence cell activity through solution-mediated reactions. Competition for calcium and phosphate ions between cells and materials impacts extracellular matrix deposition, crucial for understanding material performance.
Area of Science:
- Biomaterials Science
- Cell Biology
- Biochemistry
Background:
- Ionic substitutions in calcium phosphate biomaterials aim to enhance biological performance.
- Cellular responses to dynamic extracellular ionic changes in biomaterials are understudied.
Purpose of the Study:
- To investigate the kinetic influence of calcium-deficient hydroxyapatite (CDHA) on osteoblast-like SAOS-2 cells.
- To analyze the impact of CDHA on extracellular pH, calcium, and phosphate concentrations in vitro.
Main Methods:
- SAOS-2 cells cultured on ion-permeable membranes in contact with CDHA.
- Monitoring of extracellular pH, calcium, and phosphate levels.
- Assessment of cellular proliferation and alkaline phosphatase activity.
Main Results:
- CDHA adsorption of calcium and phosphate had minimal effect on cell proliferation and alkaline phosphatase activity.
- Competition for calcium and phosphate between SAOS-2 cells and CDHA significantly delayed and reduced extracellular matrix calcium deposition.
- Solution-mediated reactions influenced cellular response to biomaterials.
Conclusions:
- Understanding solution-mediated reactions is vital for interpreting biomaterial performance in vitro and in vivo.
- Biomaterial-cell interactions involving ion exchange affect crucial cellular functions like matrix mineralization.
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