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Article

Effectiveness of sulforaphane as a radiosensitizer for murine osteosarcoma cells

  • Authors:
    • Yasushi Sawai
    • Hiroaki Murata
    • Motoyuki Horii
    • Kazutaka Koto
    • Takaaki Matsui
    • Naoyuki Horie
    • Yoshiro Tsuji
    • Eishi Ashihara
    • Taira Maekawa
    • Toshikazu Kubo
    • Shinji Fushiki
  • View Affiliations / Copyright

    Affiliations: Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan, Department of Transfusion Medicine and Cell Therapy, Kyoto University Hospital, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan, Department of Pathology and Applied Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto 602-8566, Japan
  • Pages: 941-945
    |
    Published online on: December 18, 2012
       https://doi.org/10.3892/or.2012.2195
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Abstract

Sulforaphane (SFN), a naturally occurring member of the isothiocyanate family, is effective against various types of malignant tumor cells. We studied whether the combination of SFN and radiation would be more effective against osteosarcoma cells when compared to these treatments alone. LM8 murine osteosarcoma cells were cultured with various concentrations of SFN for 24 h and/or 2 Gy X-irradiation. The effects of individual and combination treatments on the number of cells, the cell cycle, cell proliferation-related factors and apoptosis were analyzed. The combination of SFN plus radiation had significantly greater antitumor effects than either treatment alone. Exposure to SFN increased the population of cells in the G2/M phase. Combination treatment resulted in a higher percentage of cells being in sub-G1 than did SFN alone. In addition, the combination of SFN and radiation effectively induced nuclear fragmentation and apoptotic bodies, as shown by DAPI staining. The combination of SFN and 2 Gy radiation increased the cleavage and activation of caspase-3 compared with SFN or radiation alone, as shown by western blotting. Although radiation alone increased the phosphorylation of ERK and Akt proteins, the combination of SFN and radiation induced suppression of ERK and Akt phosphorylation when compared with radiation alone. We found that SFN enhanced the radiosensitivity of LM8 murine osteosarcoma cells by inducing apoptosis through G2/M-phase arrest and by inhibiting ERK and Akt activation. These findings suggest that SFN can be used as a radiosensitizer for osteosarcomas.
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Copy and paste a formatted citation
Spandidos Publications style
Sawai Y, Murata H, Horii M, Koto K, Matsui T, Horie N, Tsuji Y, Ashihara E, Maekawa T, Kubo T, Kubo T, et al: Effectiveness of sulforaphane as a radiosensitizer for murine osteosarcoma cells. Oncol Rep 29: 941-945, 2013.
APA
Sawai, Y., Murata, H., Horii, M., Koto, K., Matsui, T., Horie, N. ... Fushiki, S. (2013). Effectiveness of sulforaphane as a radiosensitizer for murine osteosarcoma cells. Oncology Reports, 29, 941-945. https://doi.org/10.3892/or.2012.2195
MLA
Sawai, Y., Murata, H., Horii, M., Koto, K., Matsui, T., Horie, N., Tsuji, Y., Ashihara, E., Maekawa, T., Kubo, T., Fushiki, S."Effectiveness of sulforaphane as a radiosensitizer for murine osteosarcoma cells". Oncology Reports 29.3 (2013): 941-945.
Chicago
Sawai, Y., Murata, H., Horii, M., Koto, K., Matsui, T., Horie, N., Tsuji, Y., Ashihara, E., Maekawa, T., Kubo, T., Fushiki, S."Effectiveness of sulforaphane as a radiosensitizer for murine osteosarcoma cells". Oncology Reports 29, no. 3 (2013): 941-945. https://doi.org/10.3892/or.2012.2195
Copy and paste a formatted citation
x
Spandidos Publications style
Sawai Y, Murata H, Horii M, Koto K, Matsui T, Horie N, Tsuji Y, Ashihara E, Maekawa T, Kubo T, Kubo T, et al: Effectiveness of sulforaphane as a radiosensitizer for murine osteosarcoma cells. Oncol Rep 29: 941-945, 2013.
APA
Sawai, Y., Murata, H., Horii, M., Koto, K., Matsui, T., Horie, N. ... Fushiki, S. (2013). Effectiveness of sulforaphane as a radiosensitizer for murine osteosarcoma cells. Oncology Reports, 29, 941-945. https://doi.org/10.3892/or.2012.2195
MLA
Sawai, Y., Murata, H., Horii, M., Koto, K., Matsui, T., Horie, N., Tsuji, Y., Ashihara, E., Maekawa, T., Kubo, T., Fushiki, S."Effectiveness of sulforaphane as a radiosensitizer for murine osteosarcoma cells". Oncology Reports 29.3 (2013): 941-945.
Chicago
Sawai, Y., Murata, H., Horii, M., Koto, K., Matsui, T., Horie, N., Tsuji, Y., Ashihara, E., Maekawa, T., Kubo, T., Fushiki, S."Effectiveness of sulforaphane as a radiosensitizer for murine osteosarcoma cells". Oncology Reports 29, no. 3 (2013): 941-945. https://doi.org/10.3892/or.2012.2195
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