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Crosstalk between oral and systemic responses

Research Project

Project/Area Number 19K22702
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 57:Oral science and related fields
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Azuma Miyuki  東京医科歯科大学, 大学院医歯学総合研究科, 教授 (90255654)

Co-Investigator(Kenkyū-buntansha) 平山 和宏  東京大学, 大学院農学生命科学研究科(農学部), 教授 (60208858)
竹内 康雄  東京医科歯科大学, 大学院医歯学総合研究科, 講師 (60396968)
Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords腸内細菌 / 歯周細菌 / 腸管免疫 / 口腔免疫 / 歯周病原細菌 / 免疫 / 歯周病 / 細菌叢 / 腸疾患
Outline of Research at the Start

歯周プラーク細菌叢が腸内細菌および腸菅免疫に与える影響を調べるために、無菌マウスにヒト正常腸内細菌叢を移植したヒトフローラマウス(HFマウス)を作出する。HFマウスの口腔および腸管・全身の基準となる免疫応答を確認しておく。 HFマウスで、デキストラン硫酸ナトリウム (DSS)誘導性腸炎を惹起させる。その際、歯周フローラのディスバイオーシスが生じている歯周病患者の短期培養歯周細菌を口腔内投与し、腸炎発症への影響および全身および腸管免疫に与える影響を調べる。

Outline of Final Research Achievements

We found the dysbiosis occured in periodontal plaques between healthy donors and patients with severe periondontitis by microbiome analyses. We successfully performed anaerobic 10 Frequently-detectable severe periodontitis bacteria (FSPB) culture. Development of dextran sulfate sodium-induced colitis, which mimic human ulcerative colitis, were differ in three mouse breeder companies. This differences were related to intestinal microbiome and immune responses. We will plan to analyze the effects of 10FSPB treatment by oral feeding or gingival application.

Academic Significance and Societal Importance of the Research Achievements

残念ながら、最終結果の獲得には至らなかったが、樹立したマウス実験モデルで、歯周病細菌と全身疾患との関連を模倣することができれば、今後の口腔と全身とのクローストーク解析に新規のアプローチを生み出すことになる。

Report

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

    (5 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Overexpression of PD‐L1 in gingival basal keratinocytes reduces periodontal inflammation in a ligature‐induced periodontitis model2021

    • Author(s)
      Wongtim Keeratika、Ikeda Eri、Ohno Tatsukuni、Nagai Shigenori、Okuhara Shigeru、Kure Keitetsu、Azuma Miyuki
    • Journal Title

      Journal of Periodontology

      Volume: 93 Issue: 1 Pages: 146-155

    • DOI

      10.1002/jper.21-0017

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Japanese subgingival microbiota in health vs disease and their roles in predicted functions associated with periodontitis2019

    • Author(s)
      Ikeda E, Shiba T, Ikeda Y, Suda W, Nakasato A, Takeuchi Y, Azuma M, Hattori M, Izumi Y.
    • Journal Title

      Odontology

      Volume: 108 Issue: 2 Pages: 280-291

    • DOI

      10.1007/s10266-019-00452-4

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deep sequencing reveals specific bacterial signatures in the subgingival microbiota of healthy subjects2019

    • Author(s)
      Ikeda Eri、Shiba Takahiko、Ikeda Yuichi、Suda Wataru、Nakasato Akinori、Takeuchi Yasuo、Azuma Miyuki、Hattori Masahira、Izumi Yuichi
    • Journal Title

      Clinical Oral Investigations

      Volume: 23 Issue: 3 Pages: 1489-1493

    • DOI

      10.1007/s00784-019-02805-3

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Overexpression of immune checkpoint molecule PD-L1 in gingival basal keratinocytes regulates periodontal inflammation2022

    • Author(s)
      Keeratika Wongtim1, 2, Pornpan Piboonratanakij, Eri Ikeda, Shigeru Okuhara, Shigenori Nagai, Miyuki Azuma
    • Organizer
      2022 AIDR (International Association for Dental Research)/APR
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 免疫チェックポイント分子PD-L1の歯肉過剰発現は、早期および慢性の歯肉炎症を抑制する.2020

    • Author(s)
      Wongtim Keeratika, 池田 恵莉、大野 建州、永井 重徳、奥原 滋、呉 圭哲、東 みゆき.
    • Organizer
      第74回日本口腔科学会
    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2023-01-30  

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