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Regulation of Mineral metabolism by circadian Clock System

Research Project

Project/Area Number 17K10071
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Pediatrics
Research InstitutionOsama Woman's and Children's Hospital

Principal Investigator

Kinoshita Saori  地方独立行政法人大阪府立病院機構大阪母子医療センター(研究所), 骨発育疾患研究部門(旧環境影響部門), 研究技術員Ⅱ (40746418)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords生物時計 / Bmal1 / FGF23 / リン / ビタミンD / 骨細胞 / BMAL1 / VDR / 時計遺伝子 / リン代謝 / 時間栄養学
Outline of Final Research Achievements

The role for circadian clock system in the regulation of phosphate metabolism was analyzed using mice lacking Bmal1 gene in osteocytes (KO mouse). Body weight and tail length were not different between control and KO mice. FGF23 levels in the serum was decreased in KO mice in a time-dependent manner, which resulted in higher phosphate levels in the serum and decreased urinary excretion of phosphate. These findings indicate the important role for skeletal circadian clock system in the regulation of phosphate metabolism.

Academic Significance and Societal Importance of the Research Achievements

近年、生物時計の破綻が健康に悪影響を及ぼすことが明らかとなってきている。肥満、がんなどとの関連は明らかになってきているが、最近では骨粗鬆症と体内リズム破綻の関連も明らかになってきている。本研究は、骨代謝の重要な一部であるリン代謝に注目し、
生物時計とリン代謝の関連を証明した研究である。本研究成果は、生物時計の破綻による骨ミネラル代謝異常の機序解明に寄与する研究と考えられる。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (4 results)

All 2020 2018 2017

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (2 results)

  • [Journal Article] Lack of PTEN in osteocytes increases circulating phosphate concentrations by decreasing intact fibroblast growth factor 23 levels2020

    • Author(s)
      Masanobu Kawai, Saori Kinoshita, Keiichi Ozono, Toshimi Michigami
    • Journal Title

      Scientific Reports

      Volume: 10(1) Issue: 1 Pages: 21501-21501

    • DOI

      10.1038/s41598-020-78692-6

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Intestinal clock system regulates skeletal homeostasis.2018

    • Author(s)
      Kawai M, Kinoshita S, Yamazaki M, Yamamoto K, Rosen CJ, Shimba S, Ozono K, Michigami T.
    • Journal Title

      JCI Insight

      Volume: 7 Issue: 5

    • DOI

      10.1172/jci.insight.121798

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 骨細胞特異的PPTEN欠損マウスでは血清FGF23濃度が低下し、血清リン濃度が増加する2020

    • Author(s)
      川井正信、木下さおり、大薗恵一、道上敏美
    • Organizer
      第38日本骨代謝学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 腸管生物時計はVDR依存性カルシウム吸収を制御し、その破綻は骨量減少を引き起こす2017

    • Author(s)
      2.川井正信、木下さおり、山崎美和、山本景子、大薗恵一、道上敏美
    • Organizer
      第51回日本小児内分泌学会学術集会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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