Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
권호 표지

DNA microarray analysis of gene expression of MC3T3-E1 osteoblast cell cultured on anodized- or machined titanium surface

  • Park, Ju-Mi (Ewha Womans University Graduate School of Clinical Dentistry Department of Implant Dentistry) ;
  • Jeon, Hye-Ran (Ewha Womans University Graduate School of Clinical Dentistry Department of Implant Dentistry) ;
  • Pang, Eun-Kyoung (Ewha Womans University School of Medicine Department of Periodontology) ;
  • Kim, Myung-Rae (Ewha Womans University Graduate School of Clinical Dentistry Department of Implant Dentistry) ;
  • Kang, Na-Ra (Ewha Womans University Graduate School of Clinical Dentistry Department of Implant Dentistry)
  • Published : 2008.08.15
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Abstract

Purpose: The aim of this study was to evaluate adhesion and gene expression of the MC3T3-E1 cells cultured on machined titanium surface (MS) and anodized titanium surface (AS) using MTT test, Scanning electron micrograph and cDNA microarray. Materials and Methods: The MTT test assay was used for examining the proliferation of MC3T3-E1 cells, osteoblast like cells from Rat calvaria, on MS and AS for 24 hours and 48 hours. Cell cultures were incubated for 24 hours to evaluate the influence of the substrate geometry on both surfaces using a Scanning Electron Micrograph (SEM). The cDNA microarray Agilent Rat 22K chip was used to monitor expressions of genes. Results: After 24 hours of adhesion, the cell density on AS was higher than MS (p < 0.05). After 48 hours the cell density on both titanium surfaces were similar (p > 0.05). AS had the irregular, rough and porous surface texture. After 48 hours incubation of the MC3T3-E1 cells, connective tissue growth factor (CTGF) was up-regulated on AS than MS (more than 2 fold) and the insulin-like growth factor 1 receptor was down-regulated (more than 2 fold) on AS than MS. Conclusion: Microarray assay at 48 hours after culturing the cells on both surfaces revealed that osteoinductive molecules appeared more prominent on AS, whereas the adhesion molecules on the biomaterial were higher on MS than AS, which will affect the phenotype of the plated cells depending on the surface morphology.

Keywords

References

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