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Osteosarcoma cell apoptosis induced by selenium.

K Hiraoka1, S Komiya, T Hamada

  • 1Department of Orthopaedic Surgery, Kurume University School of Medicine, Japan.

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
|September 20, 2001
PubMed
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Selenium, an essential nutrient, demonstrated anti-cancer properties by inhibiting osteosarcoma cell growth in vitro and in vivo. This suggests selenium

Area of Science:

  • Oncology
  • Nutritional Science
  • Cancer Research

Background:

  • Selenium is an essential nutrient with reported cancer-preventive properties.
  • The anti-proliferative mechanisms of selenium, particularly in osteosarcoma, remain largely uncharacterized.
  • Osteosarcoma is a primary bone cancer with significant treatment challenges.

Purpose of the Study:

  • To investigate the anti-proliferative effects of selenium on osteosarcoma cells in vitro.
  • To evaluate the efficacy of selenium in inhibiting osteosarcoma tumor growth in vivo.
  • To assess the safety and cytotoxic effects of selenium on normal tissues during treatment.

Main Methods:

  • In vitro studies utilized three human osteosarcoma cell lines exposed to selenium.
  • In vivo experiments involved a transplantable osteosarcoma model in nude mice treated with selenium.

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  • Tumor growth inhibition, morphological changes, and cytotoxicity in normal tissues were assessed.

    • Main Results:

    • Selenium significantly inhibited osteosarcoma cell proliferation in vitro.
    • In vivo studies showed selenium suppressed tumor growth in nude mice.
    • Selenium treatment did not induce cytotoxic effects in normal tissues.

    Conclusions:

    • Selenium exhibits significant anti-proliferative and tumor-inhibitory effects on osteosarcoma.
    • The findings support selenium's potential as a therapeutic agent for osteosarcoma.
    • Further research into selenium's mechanism of action in osteosarcoma is warranted.