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The role of oxidative stress in the maintenance of bone metabolism

Research Project

Project/Area Number 24791568
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Orthopaedic surgery
Research InstitutionJuntendo University

Principal Investigator

SAITA Yoshitomo  順天堂大学, 医学部, 助教 (00534885)

Co-Investigator(Kenkyū-buntansha) NOJIRI Hidetoshi  順天堂大学, 整形外科, 助教 (10317456)
Co-Investigator(Renkei-kenkyūsha) SHIMIZU Takahiko  千葉大学, 大学院医学研究院先進加齢医学講座, 准教授 (40301791)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords酸化ストレス / 骨粗鬆症 / 骨細胞 / Mn-SOD / 骨芽細胞 / 破骨細胞 / 加齢 / 骨代謝
Outline of Final Research Achievements

Osteocytes play a crucial role in maintaining the quality of and healing damage to bone tissue. However, the pathological effects of mitochondrial redox imbalances on osteocytes and bone metabolism have not been fully elucidated. We generated mice lacking mitochondrial superoxide dismutase 2 (Sod2) in osteocytes. Sod2 depletion in the osteocytes positively enhanced the production of cellular superoxide in vivo. Sod2-deficient femurs showed remarkable bone loss in an age-dependent manner. Sod2 deficiency significantly suppressed bone formation and increased bone resorption concomitant with the upregulation of sclerostin and receptor activator of NF-κB ligand (RANKL). These findings demonstrate that the mitochondrial superoxide induced in osteocytes by Sod2 ablation causes age-related bone loss due to the impairment of canalicular networks and bone metabolism via the deregulation of the sclerostin and RANKL expression.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (16 results)

All 2015 2014 2013 2012

All Journal Article (6 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (10 results)

  • [Journal Article] Mitochondrial superoxide in osteocytes perturbs canalicular networks in the setting of age-related osteoporosis.2015

    • Author(s)
      Kobayashi K1, Nojiri H2, Saita Y2, Morikawa D1, Ozawa Y3, Watanabe K3, Koike M1, Asou Y4, Shirasawa T5, Yokote K6, Kaneko K2, Shimizu T3.
    • Journal Title

      Scientific Reports

      Volume: Mar 16;5 Issue: 1 Pages: 9148-9148

    • DOI

      10.1038/srep09148

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cytoplasmic reactive oxygen species and SOD1 regulate bone mass during mechanical unloading.2013

    • Author(s)
      Morikawa D, Nojiri H, Saita Y, Kobayashi K, Watanabe K, Ozawa Y, Koike M, Asou Y, Takaku T, Kaneko K, Shimizu T.
    • Journal Title

      J Bone Miner Res

      Volume: november 28(11) Issue: 11 Pages: 2368-80

    • DOI

      10.1002/jbmr.1981

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] 骨細胞における抗酸化酵素Sod2の骨リモデリング制御機構2013

    • Author(s)
      小林 慶司, 野尻 英俊, 齋田 良知, 森川 大智, 小池 正人, 麻生 義則, 金子 和夫, 清水 孝彦
    • Journal Title

      日本整形外科学会雑誌

      Volume: 87巻8号

    • Related Report
      2013 Research-status Report
  • [Journal Article] 骨細胞特異的Sod2欠損マウスにおける骨リモデリング制御機構の解析2013

    • Author(s)
      小林 慶司, 野尻 英俊, 齋田 良知, 森川 大智, 小池 正人, 麻生 義則, 金子 和夫, 清水 孝彦
    • Journal Title

      日本骨代謝学会学術集会プログラム抄録集

      Volume: 31 Pages: 77-77

    • Related Report
      2013 Research-status Report
  • [Journal Article] スーパーオキサイドディスムターゼ1(SOD1)による骨代謝制御機構の解析2012

    • Author(s)
      野尻 英俊, 斎田 良知
    • Journal Title

      整形外科

      Volume: 63巻11号 Pages: 1168-1168

    • Related Report
      2012 Research-status Report
  • [Journal Article] CuZn-SOD 欠損は低骨代謝回転型骨量減少と加齢性コラーゲン架橋変化を引き起こし骨脆弱化する2012

    • Author(s)
      清水 孝彦, 野尻 英俊
    • Journal Title

      Biomedical Research on Trace Elements

      Volume: 23巻1号 Pages: 1-5

    • NAID

      10030755992

    • Related Report
      2012 Research-status Report
  • [Presentation] Chondrocyte-specific Deletion of Sod2 Exacerbates Cartilage Degeneration Associated with Low Mitochondrial Membrane Potential in Mice2014

    • Author(s)
      Masato Koike, Nojiri Hidetoshi, Yoshitomo Saita et al.
    • Organizer
      ASBMR 2014 Annual Meeting
    • Place of Presentation
      Houston, Texas, USA
    • Year and Date
      2014-09-13
    • Related Report
      2014 Annual Research Report
  • [Presentation] 骨細胞における酸化ストレスは骨リモデリングバランスの破綻をもたらす2014

    • Author(s)
      小林 慶司, 野尻 英俊, 齋田 良知, 森川 大智, 小池 正人, 小澤 裕介, 麻生 義則, 金子 和夫, 清水 孝彦
    • Organizer
      日本整形外科学会
    • Place of Presentation
      神戸国際展示場
    • Year and Date
      2014-05-22 – 2014-05-25
    • Related Report
      2014 Annual Research Report
  • [Presentation] SOD2 deficiency in chondrocytes accelerates age-related osteoarthritis in mice2014

    • Author(s)
      M. Koike, H. Nojiri, Y. Ozawa, K. Watanabe, I. Masuda, Y. Muramatsu, H. Kaneko, D. Morikawa, K. Kobayashi, Y. Saita, T. Sasho, T. Shirasawa, K. Yokote, K. Kaneko, T. Shimizu
    • Organizer
      Osteoarthritis and Cartilage 2014 World Congress
    • Place of Presentation
      Paris, France
    • Year and Date
      2014-04-24 – 2014-04-27
    • Related Report
      2014 Annual Research Report
  • [Presentation] Osteocyte Specific Deletion of Superoxide Dismutase2 Induces Osteocyte Loss Resulting in Bone Loss Associated with Impairment of Bone Remodeling2013

    • Author(s)
      Keiji Kobayashi, Hidetoshi Nojiri, Yoshitomo Saita, Daichi Morikawa, Masato Koike, Yusuke Ozawa, Yoshinori Asou, Kazuo Kaneko, Takahiko Shimizu,
    • Organizer
      2013 ASBMR Annual Meeting Abstracts
    • Place of Presentation
      Baltimore, USA
    • Related Report
      2013 Research-status Report
  • [Presentation] 骨細胞における抗酸化酵素Sod2の骨リモデリング制御機構2013

    • Author(s)
      小林 慶司, 野尻 英俊, 齋田 良知, 森川 大智, 小池 正人, 麻生 義則, 金子 和夫, 清水 孝彦
    • Organizer
      日本整形外科学会基礎学術集会
    • Place of Presentation
      幕張メッセ
    • Related Report
      2013 Research-status Report
  • [Presentation] 骨細胞特異的Sod2欠損マウスにおける骨リモデリング制御機構の解析2013

    • Author(s)
      小林 慶司, 野尻 英俊, 齋田 良知, 森川 大智, 小池 正人, 麻生 義則, 金子 和夫, 清水 孝彦
    • Organizer
      日本骨代謝学会
    • Place of Presentation
      神戸
    • Related Report
      2013 Research-status Report
  • [Presentation] 細胞質活性酸素とSOD1は機械的刺激応答に伴う骨量変化を制御する2013

    • Author(s)
      清水 孝彦, 森川 大智, 野尻 英俊, 斎田 良知, 渡辺 憲史, 麻生 義則, 金子 和夫
    • Organizer
      日本基礎老化学会
    • Place of Presentation
      大阪
    • Related Report
      2013 Research-status Report
  • [Presentation] スーパーオキサイドディスムターゼ1(SOD1)欠損は低代謝回転型骨量減少と加齢性コラーゲン架橋変化を引き起こし骨脆弱化する2012

    • Author(s)
      野尻 英俊, 斎田 良知, 森川 大智, 小林 慶司, 宮崎 剛, 斎藤 充, 丸毛 啓史, 金子 和夫, 清水 孝彦
    • Organizer
      第30回日本骨代謝学会学術集会
    • Place of Presentation
      新宿
    • Related Report
      2012 Research-status Report
  • [Presentation] メカニカルストレス応答における酸化ストレスと抗酸化酵素の解析2012

    • Author(s)
      森川 大智, 野尻 英俊, 齋田 良知, 小林 慶司, 渡辺 憲史, 麻生 義則, 金子 和夫, 清水 孝彦
    • Organizer
      第30回日本骨代謝学会学術集会
    • Place of Presentation
      新宿
    • Related Report
      2012 Research-status Report
  • [Presentation] 細胞質酸化ストレスは低代謝型骨量減少を引き起こす2012

    • Author(s)
      森川 大智, 野尻 英俊, 斎田 良知, 津田 千鶴, 斎藤 充, 宮崎 剛, 金子 和夫, 清水 孝彦
    • Organizer
      日本生化学会大会・日本分子生物学会年会合同大会
    • Place of Presentation
      福岡
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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