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Minimally invasive acquisition of keratinized gingival tissues by controlling of basement membrane component molecules induction.

Research Project

Project/Area Number 19H03841
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionOsaka Dental University (2022)
Okayama University (2019-2021)

Principal Investigator

MAEKAWA Kenji  大阪歯科大学, 歯学部, 教授 (20304313)

Co-Investigator(Kenkyū-buntansha) 窪木 拓男  岡山大学, 医歯薬学域, 教授 (00225195)
冨田 秀太  岡山大学, 大学病院, 准教授 (10372111)
ハラ エミリオ・サトシ  岡山大学, 医歯薬学域, 研究准教授 (40779443)
大橋 俊孝  岡山大学, 医歯薬学域, 教授 (50194262)
大野 充昭  岡山大学, 医歯薬学域, 准教授 (60613156)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2022: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Keywords角化歯肉 / 上皮 / 間葉 / 基底膜 / 再生療法
Outline of Research at the Start

天然歯や口腔インプラント義歯が長期的に良好な予後を維持するためには,歯や口腔インプラント周囲に十分な幅の「角化した付着歯肉」が必要であると考えられている。歯肉組織は上皮組織と間葉組織から形成されるが,我々の研究グループは既に角化歯肉の分化・維持には,間葉組織より上皮に向けて発現されているシグナルが関与する可能性を掴んでいる.本研究では上皮細胞の角化を維持・促進するための間葉組織由来シグナルの分子基盤を同定し,そのシグナルがどのような間葉細胞から産生され,どのように上皮細胞に伝搬されるかを明らかにする。ひいては,付着・角化歯肉を生物学的に誘導する方法を開発する一助とする。

Outline of Final Research Achievements

This study aimed to develop a minimally invasive keratinized gingival tissue acquisition therapy. we first attempted to construct an in vitro model that resembles normal oral mucosal tissue using epithelial cells and oral mucosa cell-derived fibroblasts, and succeeded in forming a basement membrane tissue between the epithelium and mesenchyme, which resembles normal oral mucosal tissue. We succeeded in forming tissue similar to normal oral mucosal tissue, including the formation of basement membrane tissue between the epithelium and mesenchyme.
Next, we succeeded in extracting genes that are highly expressed in the mesenchyme of keratinized mucosa, and performed functional analysis using a three-dimensional co-culture experimental model. The extracted genes promoted keratinization only in the three-dimensional epithelial cell culture model, indicating that the genes act directly on epithelial cells and are functional.

Academic Significance and Societal Importance of the Research Achievements

天然歯や口腔インプラント義歯が長期的に良好な予後を維持するためには,臨床的に健康な歯周組織,なかでも,歯頚部や口腔インプラント周囲に十分な幅の「角化した付着歯肉」が必要であると考えられている.しかし,生来の個体差,さらには歯周病やメカニカルストレスなどにより角化した付着歯肉の幅が不足,喪失することも少なくない.この問題に対して申請研究は,角化歯肉の形質を維持する力を生物学的に理解し,歯槽粘膜を構成する細胞や,未分化な細胞を角化歯肉に生物学的に分化誘導することで,低侵襲な角化歯肉の再生療法の開発を目指し,正常な口腔粘膜組織に類似したin vitro モデル構築に成功したという臨床的意義を持つ.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (5 results)

All 2020 2019

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

  • [Journal Article] Type XVIII Collagen Modulates Keratohyalin Granule Formation and Keratinization in Oral Mucosa.2019

    • Author(s)
      Nguyen HTT, Ono M, Hara ES, Komori T, Edamatsu M, Yonezawa T, Kimura-Ono A, Maekawa K, Kuboki T, Oohashi T.
    • Journal Title

      Int J Mol Sci.

      Volume: 20 Issue: 19 Pages: 4739-4739

    • DOI

      10.3390/ijms20194739

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 口腔粘膜上皮の角化制御に関わる基底膜分子の同定2020

    • Author(s)
      Nguyen Ha,大野充昭,小盛大志,植田淳二,前川賢治,窪木拓男
    • Organizer
      第50回公益社団法人日本口腔インプラント学会記念学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Type XVIII collagen modulates oral mucosal keratinization in adult mice.2020

    • Author(s)
      Nguyen HTT, Ono M, Hara ES, Komori T, Edamatsu M, Yonezawa T, Kimura-Ono A, Maekawa K, Kuboki T, Oohashi T.
    • Organizer
      98th General Session & Exhibition of the IADR 2020.3.21 Washington DC, USA.
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A new function of type XVIII collagen in basement membrane of oral mucosa: a regulator of keratinization.2019

    • Author(s)
      Nguyen HTT, Ono M, Hara ES, Komori T, Edamatsu M, Yonezawa T, Kimura-Ono A, Maekawa K, Kuboki T, Oohashi T.
    • Organizer
      11th International Conference on Proteoglycans
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Type XIII collagen modulates keratohyalin granule formation and keratinization in oral mucosa.2019

    • Author(s)
      Nguyen HTT, Ono M, Hara ES, Komori T, Edamatsu M, Yonezawa T, Kimura-Ono A, Maekawa K, Kuboki T, Oohashi T.
    • Organizer
      The 4th International Symposium of Medical and Dental Education in Okayama
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2024-01-30  

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