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Initial biocompatibility and enhanced osteoblast response of Si doping in a porous BCP bone graft substitute

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Abstract

Granular shape biphasic calcium phosphate (BCP) bone grafts with and without doping of silicon cations were evaluated in regards to biocompatibility and MG-63 cellular response. To do this we studied Cellular cytotoxicity, cellular adhesion and spreading behavior and cellular differentiation with alizarin red S staining. Gene expression in MG-63 cells on the implanted bone substitutes was also examined at different time points using RT-PCR. In comparison, the Si-doped BCP granule showed more cellular viability than the BCP granule without doping in MTT assay. Moreover, cell proliferation was much higher when Si doping was employed. The cells grown on the silicon-doped BCP substitutes had more active filopodial growth with cytoplasmic webbing that proceeded to the flattening stage, which was indicative of well cellular adhesion. When these cells were exposed to Si-doped BCP granules for 14 days, well differentiated MG-63 cells were observed. Osteonectin and osteopontin genes were highly expressed in the late stage of differentiation (14 days), whereas collagen type I mRNA were found to be highly expressed during the early stage (day 3). These combined results of this study demonstrate that silicon-doped BCP enhanced osteoblast attachment/spreading, proliferation, differentiation and gene expression.

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Authors and Affiliations

  1. Department of Immunology, School of Medicine, Soonchunhyang University, Cheonan, Chungnum, 330-090, South Korea

    In-Seon Byun, M. Anirban Jyoti, Young-Ki Min & Ho-Yeon Song

  2. Department of Biomedical Engineering and Materials, School of Medicine, Soonchunhyang University, Cheonan, Chungnum, 330-090, South Korea

    Swapan Kumar Sarkar & Byong-Taek Lee

  3. Department of Health Science, Konyang University, Nonsan, Chungnum, 320-711, South Korea

    Hyung-Seok Seo

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  1. In-Seon Byun
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Correspondence to Ho-Yeon Song.

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Byun, IS., Sarkar, S.K., Anirban Jyoti, M. et al. Initial biocompatibility and enhanced osteoblast response of Si doping in a porous BCP bone graft substitute. J Mater Sci: Mater Med 21, 1937–1947 (2010). https://doi.org/10.1007/s10856-010-4061-1

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  • DOI: https://doi.org/10.1007/s10856-010-4061-1

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