Effect of Gentamicin on Growth and Differentiation of Human Mesenchymal Stem Cells

  • Kagiwada Harumi
    Tissue Engineering Research Group, Research Institute for Cell Engineering (RICE), National Institute of Advanced Industrial Science and Technology (AIST)
  • Fukuchi Takeshi
    Life Science Laboratories, Life Science RD Center, KANEKA Corporation
  • Machida Hiroko
    Tissue Engineering Research Group, Research Institute for Cell Engineering (RICE), National Institute of Advanced Industrial Science and Technology (AIST)
  • Yamashita Kenji
    Life Science Laboratories, Life Science RD Center, KANEKA Corporation
  • Ohgushi Hajime
    Tissue Engineering Research Group, Research Institute for Cell Engineering (RICE), National Institute of Advanced Industrial Science and Technology (AIST)

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抄録

A tissue engineering approach using human mesenchymal stem cells (MSCs) can be used to regenerate bone/cartilage tissue. For effective tissue regeneration, cell cultivation under biologically safe conditions is essential. The objective of this study was to determine suitable antibiotic concentrations in culture media for MSCs while maintaining their inherent capabilities for proliferation and osteogenic/chondrogenic differentiation. When human MSCs were cultured with over 200 μg/mL of gentamicin, the rate of cell growth decreased significantly. In contrast, a concentration of 20 μg/mL gentamicin supported cell proliferation and differentiation capability very well and did not change the expression patterns of cell surface antigens (CD44+, CD105+, CD34-, CD45-). The concentration of 20 μg/ml is much higher than that of the MIC (Minimum Inhibition Concentration) of common bacteria, such as Staphylococcus aureus, Haemophilus influenzae and Escherichia coli. Therefore, we recommend 20 μg/mL of gentamicin in culture media for effective tissue regeneration to avoid bacterial contamination and maintain the osteogenic/chondrogenic capability of MSCs. <br>

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