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Challenge of controling tooth root length by HDAC3 inhibition of dental mesenchym

Research Project

Project/Area Number 19K10220
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionTohoku University

Principal Investigator

Niibe Kunimichi  東北大学, 大学病院, 講師 (50468500)

Co-Investigator(Kenkyū-buntansha) 江草 宏  東北大学, 歯学研究科, 教授 (30379078)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords間葉系幹細胞 / 歯胚再生 / エピジェネティクス / HDAC3 / 歯根成長制御 / 振盪培養 / HDAC3阻害 / 分化制御 / 歯原性間葉 / 歯根長制御
Outline of Research at the Start

これまで行ってきた遺伝子改変マウスの 解析結果から,HDAC3阻害剤が歯原性間葉組織の分化を調整し,歯根の成長を制御できる 可能性に着目している。そこで,1 各種歯原性間葉細胞に対するHDAC3阻害剤を添加する ことで,阻害剤の影響を真に受ける細胞を同定する。2 マウスへのHDAC3阻害剤投与によ る歯原性間葉組織への直接的な影響を検証する。3 器官原器法におけるHDAC3阻害剤投与 が歯根形態に及ぼす影響を検証する。これらの実験から本申請研究は,HDAC3阻害剤が将 来的に歯根長制御に有効な薬剤となり得るか明らかにし,歯胚再生の実現化へ向け,歯根長 を人為的に操作する技術基盤を確立することを目的とする。

Outline of Final Research Achievements

The objective of this study is to control tooth root by inhibiting HDAC3 of dental mesenchyme.
Our MSC-spheroids which showed neural crest stem cell like phenotype highly expressed HDAC9, HDAC11 and down regulated ESCO2, AURKA, and AURKB by analyzing PCR array. Our experiments suggested that the epigenetic change of MSC-spheroids was related to the gene expression of cell proliferation and differentiation. In addition, we performed tooth organ germ method by using MSC-spheroid and fetal dental epithelium. We successfully generate tooth organ using our MSC-spheroids. The next step, we will use HDAC inhibitor to organ germ to make clear whether HDAC inhibitor can control tooth root length.

Academic Significance and Societal Importance of the Research Achievements

ヒトの永久歯は中切歯、側切歯から第2大臼歯までと一般的には智歯も含めると32本存在するが、形態や大きさはそれぞれの歯種でほぼ一定である。現在、歯の再生は実現化に至っていないが、器官原基法を応用可能であった場合、歯の形態や大きさ制御は困難な現状にあり、技術構築が必須となる。我々が発見したHDAC3の発現抑制は、歯の内部や歯根の成長に関わる象牙質の成長を抑制する働きがあることが示唆され、今後歯の再生技術が構築された際、任意の大きさに成長させたは歯胚の成長をストップさせる技術へつながる可能性がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results)

  • [Int'l Joint Research] Mayo Clinic(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Mayo Cinic(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] Mayo Clinic(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Novel Mesenchymal Stem Cell Spheroids with Enhanced Stem Cell Characteristics and Bone Regeneration Ability2022

    • Author(s)
      Ohori-Morita Yumi、Niibe Kunimichi、Limraksasin Phoonsuk、Nattasit Praphawi、Miao Xinchao、Yamada Masahiro、Mabuchi Yo、Matsuzaki Yumi、Egusa Hiroshi
    • Journal Title

      Stem Cells Translational Medicine

      Volume: xx Issue: 4 Pages: 1-16

    • DOI

      10.1093/stcltm/szab030

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Stage-Specific Role of Amelx Activation in Stepwise Ameloblast Induction from Mouse Induced Pluripotent Stem Cells2021

    • Author(s)
      Miao Xinchao、Niibe Kunimichi、Zhang Maolin、Liu Zeni、Nattasit Praphawi、Ohori-Morita Yumi、Nakamura Takashi、Jiang Xinquan、Egusa Hiroshi
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 13 Pages: 7195-7195

    • DOI

      10.3390/ijms22137195

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Shaking-Culture Method for Generating Bone Marrow Derived Mesenchymal Stromal/Stem Cell-Spheroids With Enhanced Multipotency in vitro2020

    • Author(s)
      Niibe Kunimichi、Ohori-Morita Yumi、Zhang Maolin、Mabuchi Yo、Matsuzaki Yumi、Egusa Hiroshi
    • Journal Title

      Frontiers in Bioengineering and Biotechnology

      Volume: 8 Pages: 590332-590332

    • DOI

      10.3389/fbioe.2020.590332

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Novel spheroid culture of mesenchymal stem cells for bone regeneration.2021

    • Author(s)
      Niibe K
    • Organizer
      IADR-APR 3rd Young Researchers Forum
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Stepwise ameloblast induction from induced pluripotent stem cells.2021

    • Author(s)
      Miao X, Niibe K, Zhang M, Egusa H.
    • Organizer
      The 99th general session of International Association for Dental Research
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Role of Amelx activation in stepwise ameloblast induction from mouse induced pluripotent stem cells.2021

    • Author(s)
      Miao X, Niibe K, Zhang M, Egusa H.
    • Organizer
      Chulalongkorn-Tohoku Joint Symposium in Dental Science 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 13.Novel spheroid culture of mesenchymal stem cells for bone regeneration.2021

    • Author(s)
      Niibe K
    • Organizer
      IADR-APR 3rd Young Researchers Forum,
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Long-term shaking culture maintains multipotency and anti-inflammatory property of mesenchymal stem cells.2020

    • Author(s)
      Ohori-Morita Y, Niibe K, Egusa H
    • Organizer
      International Society for Stem Cell Research 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Generating MSC spheroids recovers stemness characteristics for cortical bone formation.2020

    • Author(s)
      Ohori-Morita Y, Niibe K, Egusa H
    • Organizer
      The 68th Annual Meeting of Japanese Association for Dental Research
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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