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Construction of enamel self-healing system by amelogenin

Research Project

Project/Area Number 22K10279
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57070:Developmental dentistry-related
Research InstitutionHealth Sciences University of Hokkaido

Principal Investigator

Kurashige Yoshihito  北海道医療大学, 歯学部, 講師 (30453278)

Co-Investigator(Kenkyū-buntansha) 吉田 光希  北海道医療大学, 歯学部, 講師 (30453260)
伊藤 修一  北海道医療大学, 歯学部, 教授 (50382495)
中尾 友也  北海道医療大学, 歯学部, 講師 (90733048)
Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2024: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2023: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsアメロジェニン / 器官培養 / エナメル質 / エムドゲイン / amelogenin / エナメル質再石灰化 / reminelarization
Outline of Research at the Start

歯の表面はエナメル質という人体で最も硬いものでできています。そのエナメル質は、虫歯により少しでも溶けてしまうと再生は困難です。虫歯などで溶けてしまった場合は、レジンで治しますが、虫歯の成り始めのわずかな表面の溶け出しは、フッ素なのでにより再石灰化により治すことが可能です。しかし、フッ素による再石灰化は期間がかかります。この研究は、エナメル質の形成時期に人体からでるタンパク質を使って、より短時間で再石灰化を導く研究になります。

Outline of Final Research Achievements

There are two types of enamel dysplasia: those that occur in all jaws due to genetic predisposition and those that are localized to specific teeth. Localized enamel dysplasia includes caries and trauma in primary teeth as well as Molar Incisor Hypomineralization (MIH), which is characteristic of permanent incisors and first molars. The results of this study revealed that although the enamel matrix protein amelogenin is important for enamel formation, ameloblastin, KLK-4, and MMP-20 also cooperate to induce calcification.

Academic Significance and Societal Importance of the Research Achievements

本研究結果から、歯胚においてアメロジェニンがエナメル質形成に重要であるものの、その他アメロブラスチン、KLK-4、MMP-20も協調して石灰化誘導することが明らかになった。本結果では、歯胚培養14日でハイドロキシアパタイトの形成を認めた。このことから、短期間でエナメル小柱類似石灰化物を既存エナメル質に誘導させることが可能となり、再生歯科分野において、歯胚形成のバイオミネラリゼーションの基盤研究が可能となった。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (4 results)

All 2024 2023

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results)

  • [Journal Article] Oral infection with Porphyromonas gingivalis augmented gingival epithelial barrier molecules alteration with aging.2024

    • Author(s)
      Giri S, Takada A, Paudel D, Uehara O, Kurashige Y, Kuramitsu Y, Furukawa M, Matsushita K, Arakawa T, Nagasawa T, Abiko Y, Furuichi Y.
    • Journal Title

      J Oral Biosci.

      Volume: 66 Issue: 1 Pages: 126-133

    • DOI

      10.1016/j.job.2024.01.012

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Correction: Regaining enamel color quality using enamel matrix derivative2023

    • Author(s)
      Sugaya Hiroyuki、Kurashige Yoshihito、Suzuki Kai、Sakakibara Sayaka、Fujita Yusuke、Islam Syed Taufiqul、Nezu Takashi、Ito Shuichi、Abiko Yoshihiro、Saitoh Masato
    • Journal Title

      Medical Molecular Morphology

      Volume: 56 Issue: 4 Pages: 303-303

    • DOI

      10.1007/s00795-023-00369-6

    • Related Report
      2023 Research-status Report
  • [Journal Article] Enhancement of receptor‐mediated calcium responses by phenytoin through the suppression of calcium excretion in human gingival fibroblasts2023

    • Author(s)
      Minowa Erika、Hayashi Yoshinobu、Goh Kenji、Ishida Narumi、Kurashige Yoshihito、Nezu Akihiro、Saitoh Masato、Tanimura Akihiko
    • Journal Title

      Journal of Periodontal Research

      Volume: 58 Issue: 2 Pages: 274-282

    • DOI

      10.1111/jre.13089

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Regaining enamel color quality using enamel matrix derivative2023

    • Author(s)
      Sugaya Hiroyuki、Kurashige Yoshihito、Suzuki Kai、Sakakibara Sayaka、Fujita Yusuke、Islam Syed Taufiqul、Nezu Takashi、Ito Shuichi、Abiko Yoshihiro、Saitoh Masato
    • Journal Title

      Medical Molecular Morphology

      Volume: 1 Issue: 2 Pages: 1-1

    • DOI

      10.1007/s00795-022-00346-5

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access

URL: 

Published: 2022-04-19   Modified: 2026-01-16  

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