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Regulatory mechanism of stress-responding glycometabolism in ameloblast differentiation

Research Project

Project/Area Number 18K09505
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57010:Oral biological science-related
Research InstitutionNiigata University

Principal Investigator

IDA Hiroko  新潟大学, 医歯学系, 准教授 (60293213)

Co-Investigator(Kenkyū-buntansha) 原田 英光  岩手医科大学, 歯学部, 教授 (70271210)
入江 太朗  岩手医科大学, 歯学部, 教授 (00317570)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsエナメル質 / ストレス応答 / オートファジー / 糖代謝 / エナメル芽細胞 / エナメル上皮 / エナメル質形成不全
Outline of Final Research Achievements

In the process of ameloblast differentiation, the stress markers such as hypoxia and malnutrition were observed in the secretory and maturation stages of ameloblasts. At the same time, autophagy was seen in the papillary layer of the maturation stage. Therefore, the stress was loaded to the ameloblasts during secretion and calcification of enamel matrices, and the stress-responding reaction might be associated with autophagy. In the epithelium-specific autophagy deficient mice, the disorder of enamel formation was observed and it was notably in the hyperglycemic condition. These results suggest that autophagy is involved in the functional maintenance and glucose metabolism of ameloblast-lineage cells in amelogenesis.

Academic Significance and Societal Importance of the Research Achievements

本研究により低酸素や低栄養などに対するストレス応答の破綻がエナメル芽細胞の分化を阻害し、エナメル質形成不全を生じさせる可能性が明らかになった。これらの結果より、低栄養や妊娠糖尿病などによる子供のエナメル質形成不全の予防や発症リスクの予測につながると期待できる。エナメル質は象牙質と異なり二度と再生しない組織であるため、その形成過程での異常を未然に予防することは極めて重要である。さらに、母体状態から小児の歯の異常の発症リスク予測が可能となれば、重度齲蝕などの早期診断・治療も可能となることより、臨床的にも非常に意義深い結果がえられた。

Report

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

    (5 results)

All 2020 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Invited: 1 results)

  • [Journal Article] Functional Expression of Sodium-Dependent Glucose Transporter in Amelogenesis.2020

    • Author(s)
      Ida-Yonemochi H, Otsu K, Harada H, Ohshima H.
    • Journal Title

      Journal of Dental Research

      Volume: - Issue: 8 Pages: 1-10

    • DOI

      10.1177/0022034520916130

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 糖代謝異常がマウス歯髄組織へ及ぼす影響2020

    • Author(s)
      依田浩子,大島勇人
    • Organizer
      第125回日本解剖学会総会・全国学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] 肥満型 2 型糖尿病モデル TSOD マウスにおける口腔組織の経時的変化2019

    • Author(s)
      依田浩子,大島勇人
    • Organizer
      第61回歯科基礎医学会学術大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 肥満型糖尿病モデルTSODマウスにおける口腔組織の経時的変化2019

    • Author(s)
      依田浩子,監物新一,大島勇人
    • Organizer
      第124回日本解剖学会総会・全国 学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] 歯の形態形成におけるエネルギー代謝調節機構2018

    • Author(s)
      依田浩子
    • Organizer
      第60回歯科基礎医学会学術大会学術シンポジウム
    • Related Report
      2018 Research-status Report
    • Invited

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Published: 2018-04-23   Modified: 2022-01-27  

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