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Identification of Immune System Biomarkers Regulating the Gut-Oral axis

Research Project

Project/Area Number 21K09846
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

KOBAYASHI Ryoki  日本大学, 松戸歯学部, 助教 (10609085)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords腸口腔相関 / 免疫系バイオマーカー / 抗菌性ペプチド / βディフェンシン / ディフェンシン / 自然免疫 / 粘膜免疫 / 腸ー口腔相関 / 抗菌ペプチド / microRNA
Outline of Research at the Start

生体の入口である口腔は外来抗原や病原性微生物の侵入を防ぐだけでなく、独自の常在菌叢に対応するユニークな免疫系ネットワークシステムを構築している。免疫系システムの活性化は腸管免疫システムを起点として全身に波及し、生体恒常性の維持・亢進の中心的役割を担うことで生体リズムを安定させている。しかしながら、腸管から口腔への波及経路は不明である。本研究は腸管を起点とした口腔への免疫波及効果について免疫系システムを中心としたシグナル分子の探索を行う。

Outline of Final Research Achievements

The oral cavity, as the gateway to the body, has a crucial function in protecting against the entry of foreign substances and harmful microorganisms. Otherwise, the small intestines contain approximately 60% of the body's immune cells. Stimulation by dietary components activates both the innate and acquired immune systems, which then spread to various organs throughout the body, thus maintaining and enhancing homeostasis. Probiotics, such as lactic acid bacteria, are known to activate the immune function, starting in the gut and spreading throughout the body. We have identified immune signaling molecules that activate the immune system in the oral cavity. This activation of the oral immune system by dietary components provides essential information that contributes to the development of healthcare and preventive medical technologies, starting from the gut.

Academic Significance and Societal Importance of the Research Achievements

解剖学的特徴から独自の常在菌叢を有し、全身免疫システムと粘膜免疫システムを併せ持つユニークな免疫システムを構築している。腸管を起点とした全身の臓器連関を理解するために免疫系システムによる解明が取り組まれている。本研究では口腔免疫システムを活性化させる機序を腸-口腔相関と捉えて免疫系シグナル分子の探索を行った。腸管免疫システムを起点とした免疫機能の賦活化が口腔に至る機序を解明することは口腔内疾患だけでなく、生活習慣病を含む全身疾患の発症リスクの軽減にも有効であり、「子供の健やかな育ち」や「高齢者の健やかな老い」に対する取り組みの起点となると考えられる。

Report

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

    (14 results)

All 2023 2022 2021

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (8 results)

  • [Journal Article] <i>Fusobacterium nucleatum</i> Induces Gut Dysbiosis and Inflammasome and Promotes Colonic Inflammation2023

    • Author(s)
      Miyuki Toda, Ryoki Kobayashi, Tomoko Kurita-Ochiai, Tetsuro Kono, Arata Watanabe, Hidenobu Senpuku, Hiroyuki Okada
    • Journal Title

      International Journal of Oral-Medical Sciences

      Volume: 21 Issue: 3 Pages: 60-70

    • DOI

      10.5466/ijoms.21.60

    • ISSN
      1347-9733, 2185-4254
    • Year and Date
      2023-03-27
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] The Mechanism of Inflammation Caused by Oral Infection with <i>Fusobacterium nucleatum</i> in Periodontal Tissue2023

    • Author(s)
      Miyuki Toda, Ryoki Kobayashi, Tomoko Kurita-Ochiai, Tetsuro Kono, Arata Watanabe, Hidenobu Senpuku, Hiroyuki Okada
    • Journal Title

      International Journal of Oral-Medical Sciences

      Volume: 21 Issue: 3 Pages: 112-119

    • DOI

      10.5466/ijoms.21.112

    • ISSN
      1347-9733, 2185-4254
    • Year and Date
      2023-03-27
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Female reproductive tract-organ axes2023

    • Author(s)
      Kazuhide Takada, Vyacheslav G. Melnikov, Ryoki Kobayashi, Shihoko Komine-Aizawa, Noriko M. Tsuji. Satoshi Hayakawa
    • Journal Title

      Frontiers in Immunology

      Volume: 14 Pages: 111001-111001

    • DOI

      10.3389/fimmu.2023.1110001

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Identification of Nutritional Factors to Evaluate Periodontal Clinical Parameters in Patients with Systemic Disease2023

    • Author(s)
      Yohei Nakayama, Shinichi Tabe, Arisa Yamaguchi, Yuto Tsuruya, Ryoki Kobayashi, Katsunori Oyama, Daisuke Kitano, Keisuke Kojima, Rijutaje Kagawa, Yasuo Okamura, Jun Ogiwara, Hidenobu senpuku, Yorimasa Ogata.
    • Journal Title

      Nutrients

      Volume: 15 Issue: 2 Pages: 365-365

    • DOI

      10.3390/nu15020365

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Patients with Chronic Periodontitis Undergoing Supportive Periodontal Therapy.2023

    • Author(s)
      Shinichi Tabe, Yohei Nakayama, Ryoki Kobayashi, Katsunori Oyama, Daisuke Kitano, Jun Ogiwara, Hidenobu senpuku, Yorimasa Ogata.
    • Journal Title

      Nutrients

      Volume: 14 Issue: 23 Pages: 4993-4993

    • DOI

      10.3390/nu14234993

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lymphocyte antigen 6 complex locus G6D downregulation is a novel parameter for functional impairment of neutrophils in aged mice2022

    • Author(s)
      Suguru Saito, Alato Okuno, Toshio Maekawa, Ryoki Kobayashi, Osamu Yamashita, Noriyuki Tsujimura, Morihiko Inaba, Yasushi Kageyama, Noriko M. Tsuji.
    • Journal Title

      Frontiers in Immunology

      Volume: 13 Pages: 1001179-1001179

    • DOI

      10.3389/fimmu.2022.1001179

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] IL-22 promotes β-defensin3 production in the oral cavity.2023

    • Author(s)
      Kobayashi R, Senpuku H.
    • Organizer
      第65回歯科基礎医学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] L-22 regulated salivary β-defensin3 production after lactic acid bacteria administration.2023

    • Author(s)
      Kobayashi R, Senpuku H.
    • Organizer
      第52回日本免疫学会学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Investigation of the mechanism of periodontitis-related colitis in a mouse model.2023

    • Author(s)
      Ryoki Kobayashi, Miyuki Toda, Hiroyuki Okada, Hidenobu Senpuku.
    • Organizer
      第96回日本細菌学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Fusobacterium nucleatum の誘導による新規歯周病モデルマウスの作製と評価.2022

    • Author(s)
      戸田みゆき, 小林良喜, 泉福英信, 岡田裕之.
    • Organizer
      第64回歯科基礎医学会学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] IL-22 receptor produced by probiotic lactic acid bacteria may promote β-Defensin 3 productions in the oral mucosa.2021

    • Author(s)
      Ryoki Kobayashi, Hidenobu Senpuku
    • Organizer
      第50回日本免疫学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 唾液中のβ-defensin 3の誘導に対する乳酸菌の経口投与の効果2021

    • Author(s)
      小林良喜, 泉福英信
    • Organizer
      第65回日本唾液腺学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 歯周病関連疾患の解明を目的とした歯周病モデルマウスの確立2021

    • Author(s)
      小林良喜, 瀧澤智美, 齋藤真規, 桑原紀子, 泉福英信
    • Organizer
      第63回歯科基礎医学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] IL-10が歯周病病態モデルマウスに及ぼす影響2021

    • Author(s)
      小林良喜, 辻典子
    • Organizer
      第17回日本食品免疫学会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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