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- W4212794860 abstract "The effects of growing the Saos-2 human osteosarcoma cell line onto surfaces containing -CH3, -OH, -COOH, -NH2, and C6H5 groups obtained by silane modification were examined. These cells were used because of the great importance of bone cells in many aspects of biomaterials research. Silane-modified surfaces were characterized by contact angle measurements and, subsequently, surface energies were calculated. Cells grown on clean glass, as well as those grown on glass surfaces containing the functional groups cited above, were examined by light and scanning electron microscopy and assessed for their growth characteristics (i.e., determination of cell number and Ki67 antigen expression). The data presented seemed to indicate that if Saos-2 cells are grown on silane-modifed surfaces containing the methyl (CH3), hydroxyl (OH), and phenyl (C6H5) functional groups, their proliferation is slowed down while growth of these cells on glass surfaces modified with amino (NH2) and carboxyl (COOH) groups did not significantly affect growth. Once it was demonstrated that these three functional groups induce significant variations in proliferation, cells grown on these surfaces were also tested for apoptosis and expression of important markers of bone cell differentiation (i.e., osteonectin and osteopontin) by flow cytometry and eventual rearrangement of these markers by fluorescence microscopy. The data suggested that growth of Saos-2 cells on CH3 induces the most evident morphological changes while growth of these cells on OH and C6H5 brings about the greater variations in osteonectin and osteopontin. We hypothesized that these changes are indicative of an increase in differentiation of Saos-2 cells when grown on the OH and C6H5 groups. © 2001 John Wiley & Sons, Inc. J Biomed Mater Res 55: 338–349, 2001" @default.
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- W4212794860 date "2001-06-05" @default.
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- W4212794860 title "Modulation of osteosarcoma cell growth and differentiation by silane‐modified surfaces" @default.
- W4212794860 doi "https://doi.org/10.1002/1097-4636(20010605)55:3<338::aid-jbm1022>3.3.co;2-e" @default.
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