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Development of human gingival organoid systems and investigation for the induction mechanisms of gingival inflammation and autoimmune diseases.

Research Project

Project/Area Number 20K09913
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57020:Oral pathobiological science-related
Research InstitutionNihon University

Principal Investigator

TSUDA Hiromasa  日本大学, 歯学部, 准教授 (60325470)

Co-Investigator(Kenkyū-buntansha) 三上 剛和  新潟大学, 医歯学系, 准教授 (80434075)
鳥海 拓  日本歯科大学, 新潟生命歯学部, 准教授 (40610308)
篠塚 啓二  日本大学, 歯学部, 講師 (30431745)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords短鎖脂肪酸 / 歯肉上皮 / 細胞死 / マクロファージ / オルガノイド / 歯周組織 / 歯肉上皮細胞 / DAMPs / 三次元培養系 / HDAC阻害 / 血管 / 白血球 / 歯肉オルガノイド / 歯肉培養系モデル / オートファジー / 活性酸素種 / 歯肉 / 炎症 / 自己免疫疾患
Outline of Research at the Start

歯周疾患および同疾患の関連する全身疾患の細胞生物学的・分子的メカニズムを考察する上で、これまでは二次元培養や動物実験を用いた研究がなされてきた。しかしながら、それらによる実験結果はヒト生体と違う結果となる可能性が高い。その上、実際の歯周組織は様々な由来の細胞からなっており、単純すぎる系では細胞や分子の挙動について本当の事がわからない。本研究では、実際の生体歯肉結合組織には存在する毛細血管や白血球等の遊走細胞を導入した歯肉組織と極めて類似性が高いヒト歯肉オルガノイド組織の作成を試み、これまでの申請者等の研究結果がオルガノイド組織ではどのようになるかを検討することを目的とする。

Outline of Final Research Achievements

In this study, we aimed to prepare three-dimensional gingival tissues using primary human gingival epithelial cells and fibroblasts with capillaries and examined the effects of short-chain fatty acids produced by oral bacteria on epithelial cells. Because it was difficult to overcome the problems of primary epithelial cell isolation and cryopreservation of primary gingival epithelial cells, matching conditions with other cells, and detachment of the epithelial layer from lamina propria, we conducted parallelly explore the mechanism of cell death induced by short-chain fatty acids produced by periodontal pathogenic bacteria in human gingival epithelial cells. The results suggest that increased histone acetylation of gingival epithelial cells by short-chain fatty acids and increased autophagy by ROS production are involved in the induction of cell death. It was also suggested that LPS-induced M1 macrophage activation may be inhibited.

Academic Significance and Societal Importance of the Research Achievements

歯と歯肉の境目に蓄積した歯垢は大量の口腔内細菌を含み、これらの細菌は代謝産物として、高濃度の短鎖脂肪酸を産生する。歯肉上皮細胞への短鎖脂肪酸の作用は細胞死を誘導し、damage-associated molecular patternsと呼ばれる炎症を引き起こす因子を放出することから、歯肉炎の原因の一つとして口腔内細菌の産生する短鎖脂肪酸が考えられる。本研究では、短鎖脂肪酸誘導の細胞死メカニズムの一端としてヒストンのアセチル化の関与および活性酸素産生によるオートファジーの亢進が細胞死に重要であることを発見した。これらの知見は歯肉炎予防法開発に役に立つと考える。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2024 2023 2022 2021

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 1 results) Presentation (5 results)

  • [Journal Article] Reactive oxygen species generation required for autophagy induction during butyrate- or propionate-induced release of damage-associated molecular patterns from dying gingival epithelial Ca9-22 cells2024

    • Author(s)
      Miyake Kiwa、Mikami Yoshikazu、Asayama Takayuki、Toriumi Taku、Shinozuka Keiji、Tonogi Morio、Yonehara Yoshiyuki、Tsuda Hiromasa
    • Journal Title

      Journal of Oral Science

      Volume: 66 Issue: 2 Pages: 125-129

    • DOI

      10.2334/josnusd.23-0421

    • ISSN
      1343-4934, 1880-4926
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Possible roles of short-chain fatty acids produced by oral bacteria in the development of alveolar osteitis2024

    • Author(s)
      Asayama Takayuki、Takada Ayaka、Mikami Yoshikazu、Yamaguchi Hirofumi、Tamura Muneaki、Matsumoto Kunihito、Miyake Kiwa、Yonehara Yoshiyuki、Tsuda Hiromasa
    • Journal Title

      Journal of Oral Science

      Volume: 66 Issue: 2 Pages: 102-106

    • DOI

      10.2334/josnusd.23-0410

    • ISSN
      1343-4934, 1880-4926
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Butyrate-treatment induces gingival epithelial cell death in a three-dimensional gingival-connective tissue hybrid co-culture system2023

    • Author(s)
      Kurosawa Yusuke、Yamaguchi Hirofumi、Uemichi Kazuki、Shinozuka Keiji、Kirihara Yuki、Tsuda Hiromasa
    • Journal Title

      Journal of Dental Sciences

      Volume: 18 Issue: 2 Pages: 893-897

    • DOI

      10.1016/j.jds.2022.08.034

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Histone-deacetylase-inhibitory effects of periodontopathic-bacterial metabolites induce human gingival epithelial Ca9-22 cell death2022

    • Author(s)
      Uemichi Kazuki、Mikami Yoshikazu、Watanabe Takayasu、Shinozuka Keiji、Tonogi Morio、Tsuda Hiromasa
    • Journal Title

      Odontology

      Volume: - Issue: 3 Pages: 658-667

    • DOI

      10.1007/s10266-022-00775-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reactive oxygen species-dependent release of damage-associated molecular patterns from human gingival epithelial Ca9-22 cells during butyrate or propionate exposure2021

    • Author(s)
      Fujiwara Yui、Murofushi Takahisa、Koshi Ryosuke、Mikami Yoshikazu、Tsuda Hiromasa
    • Journal Title

      Journal of Oral Science

      Volume: 63 Issue: 2 Pages: 195-197

    • DOI

      10.2334/josnusd.20-0411

    • NAID

      130008009597

    • ISSN
      1343-4934, 1880-4926
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Bioinformatics analysis of dysregulated exosomal microRNAs derived from oral squamous cell carcinoma cells2021

    • Author(s)
      Masaoka Tadashi、Shinozuka Keiji、Ohara Kenshin、Tsuda Hiromasa、Imai Kenichi、Tonogi Morio
    • Journal Title

      Journal of Oral Science

      Volume: 63 Issue: 2 Pages: 174-178

    • DOI

      10.2334/josnusd.20-0662

    • NAID

      130008009559

    • ISSN
      1343-4934, 1880-4926
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Presynaptic NK1 Receptor Activation by Substance P Suppresses EPSCs via Nitric Oxide Synthesis in the Rat Insular Cortex2021

    • Author(s)
      Matsumura Sachie、Yamamoto Kiyofumi、Nakaya Yuka、O'Hashi Kazunori、Kaneko Keisuke、Takei Hiroki、Tsuda Hiromasa、Shirakawa Tetsuo、Kobayashi Masayuki
    • Journal Title

      Neuroscience

      Volume: 455 Pages: 151-164

    • DOI

      10.1016/j.neuroscience.2020.12.012

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 口腔内細菌の代謝産物が抜歯窩治癒不全時の抜歯窩骨壁への骨添加および炎症の遅延を引き起こす可能性2023

    • Author(s)
      朝山雄之、津田啓方、鈴木直人
    • Organizer
      第65回歯科基礎医学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 口腔内細菌の 代謝産物である短鎖脂肪酸がRANKL誘導破骨細胞形成に及ぼす影響2022

    • Author(s)
      朝山 雄之,津田 啓方
    • Organizer
      第64回 歯科基礎医学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 歯肉上皮細胞の短鎖脂肪酸誘導細胞死には活性酸素によるオートファジー誘導が必要である2022

    • Author(s)
      三宅希和,津田啓方,篠塚啓二,鈴木直人,外木守雄
    • Organizer
      第74回日本大学歯学会総会・学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 口腔内細菌代謝産物が破骨細胞分化に及ぼす影響2022

    • Author(s)
      朝山雄之,津田啓方,生木俊輔,鈴木直人,米原啓之
    • Organizer
      第74回日本大学歯学会総会・学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 歯周組織で誘導される細胞死が歯周疾患および全身疾患に及ぼしうる影響2021

    • Author(s)
      津田啓方
    • Organizer
      歯科基礎医学会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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