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Understanding of tooth morphogenesis by studying supernumerary teeth

Research Project

Project/Area Number 17K11957
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Orthodontics/Pediatric dentistry
Research InstitutionNiigata University

Principal Investigator

Saito Yoko  新潟大学, 医歯学系, 助教 (30404487)

Co-Investigator(Kenkyū-buntansha) 齊藤 一誠  新潟大学, 医歯学系, 准教授 (90404540)
大峡 淳  新潟大学, 医歯学系, 教授 (40266169)
佐藤 正宏  鹿児島大学, 総合科学域総合研究学系, 教授 (30287099)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords過剰歯 / 歯学 / 分子生物学
Outline of Final Research Achievements

The feature of this study is to analyze human supernumerary teeth by both a combination of the molecular biological technique and the morphological technique.
First we succeeded to separate only a chamber of the dental pulp and then pick out and analyze it by micro CT as morphological approach.On the other hand, an analysis result by molecular biological technique suggested the possibility that cusp number of a human supernumerary tooth was controlled by different gene in mouse.

Academic Significance and Societal Importance of the Research Achievements

歯種決定にまつわる遺伝子の検索はマウスで数多く報告されているが、ヒトではほんの数例であり、また、マウスで起こる事象がヒトに当てはまるかが不明であった。本研究では小児歯科臨床において遭遇する機会が多く、しかも治療方針として抜歯を選択する場合が多い「ヒトの過剰歯」を実験材料に用いる点が特色であり、新たな侵襲を必要とすることなく、歯胚の解析を行うことができた。今回、ヒトにおいてはマウスの場合とは異なる遺伝子による制御の可能性が示唆され、歯種決定のメカニズムを解明するためには、ヒトの歯を用いて更に詳細な解析が必要であることが判明した。

Report

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

    (3 results)

All 2019

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

  • [Journal Article] piggyBac Transposon-Based Immortalization of Human Deciduous Tooth Dental Pulp Cells with Multipotency and Non-Tumorigenic Potential.2019

    • Author(s)
      Inada E, Saitoh I, Kubota N, Iwase Y, Kiyokawa Y, Shibasaki S, Noguchi H, Yamasaki Y, Sato M
    • Journal Title

      International Journal of Molecular Science

      Volume: 20 Issue: 19 Pages: 4904-4904

    • DOI

      10.3390/ijms20194904

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Increased Expression of Cell Surface SSEA-1 is Closely Associated with Na?ve-Like Conversion from Human Deciduous Teeth Dental Pulp Cells-Derived iPS Cells2019

    • Author(s)
      Inada Emi、Saitoh Issei、Kubota Naoko、Iwase Yoko、Murakami Tomoya、Sawami Tadashi、Yamasaki Youichi、Sato Masahiro
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 20 Issue: 7 Pages: 1651-1651

    • DOI

      10.3390/ijms20071651

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Repeated human deciduous tooth-derived dental pulp cell reprogramming factor transfection yields multipotent intermediate cells with enhanced iPS cell formation capability2019

    • Author(s)
      Soda Miki、Saitoh Issei、Murakami Tomoya、Inada Emi、Iwase Yoko、Noguchi Hirofumi、Shibasaki Shinji、Kurosawa Mie、Sawami Tadashi、Terunuma Miho、Kubota Naoko、Terao Yutaka、Ohshima Hayato、Hayasaki Haruaki、Sato Masahiro
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 1490-1490

    • DOI

      10.1038/s41598-018-37291-2

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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