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Basic research on the influence of oral bacteria on respiratory virus infections

Research Project

Project/Area Number 21K10265
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57080:Social dentistry-related
Research InstitutionNihon University

Principal Investigator

KAMIO Noriaki  日本大学, 歯学部, 准教授 (60546472)

Project Period (FY) 2021-04-01 – 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 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords口腔細菌 / 歯周病 / 呼吸器ウイルス
Outline of Research at the Start

新型コロナウイルスやインフルエンザウイルスなどの呼吸器ウイルスによる感染症は、全世界に甚大な被害をもたらしている。そのため、呼吸器ウイルス感染症予防対策の構築は重要である。呼吸器ウイルスの侵入門戸である口腔には多くの細菌が常在しているため、呼吸器ウイルスの感染に口腔細菌が影響を及ぼしている可能性がある。そこで本研究では、口腔細菌が呼吸器ウイルス感染に及ぼす影響を明らかにし、良好な口腔環境が呼吸器ウイルス感染対策に有効であることを示す分子基盤の構築を目指す。

Outline of Final Research Achievements

Poor oral hygiene and periodontal disease are risk factors for respiratory virus infections, such as COVID-19 and influenza. This study explored the effect of periodontopathic bacteria, particularly Fusobacterium nucleatum, on respiratory virus infection. Our findings revealed that F. nucleatum enhanced influenza virus replication by inducing TMPRSS2 expression. We also found that F. nucleatum can affect respiratory epithelial tight junction proteins and potentially cause an increase in paracellular permeability in the alveoli. These results provide a scientific basis to support the importance of maintaining good oral hygiene in effectively preventing the onset and/or progression of respiratory virus infections.

Academic Significance and Societal Importance of the Research Achievements

本研究により、歯周病原菌が呼吸器ウイルス感染を促進させること、さらにそのメカニズムの一端を明らかにした。また、生体防御において重要となる呼吸器上皮バリア機能を歯周病原菌が低下させることを明らかにした。この上皮バリア機能の低下は呼吸器ウイルス感染の重症化に関わる可能性が考えられる。以上の結果から、健康な口腔環境を維持し、口腔細菌をコントロールすることが、呼吸器ウイルス感染症の発症や重症化の予防につながる可能性が示唆された。

Report

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

    (8 results)

All 2024 2023 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Fusobacterium nucleatum putatively affects the alveoli by disrupting the alveolar epithelial cell tight junction, enlarging the alveolar space, and increasing paracellular permeability2023

    • Author(s)
      Karahashi Yukihiro、Cueno Marni E.、Kamio Noriaki、Takahashi Yuwa、Takeshita Ikuko、Soda Kaori、Maruoka Shuichiro、Gon Yasuhiro、Sato Shuichi、Imai Kenichi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 682 Pages: 216-222

    • DOI

      10.1016/j.bbrc.2023.10.026

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Butyric acid modulates periodontal nociception in <i>Porphyromonas gingivalis</i>-induced periodontitis2022

    • Author(s)
      Murakami Naoki、Yoshikawa Kenji、Tsukada Kohei、Kamio Noriaki、Hayashi Yoshinori、Hitomi Suzuro、Kimura Yuki、Shibuta Ikuko、Osada Ayaka、Sato Shuichi、Iwata Koichi、Shinoda Masamichi
    • Journal Title

      Journal of Oral Science

      Volume: 64 Issue: 1 Pages: 91-94

    • DOI

      10.2334/josnusd.21-0483

    • NAID

      130008142667

    • ISSN
      1343-4934, 1880-4926
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Porphyromonas gingivalis Mfa1 fimbria putatively binds to TLR2 and induces both IL-6 and IL-8 production in human bronchial epithelial cells.2022

    • Author(s)
      Takahashi Y, Cueno ME, Kamio N, Iinuma T, Hasegawa T, Imai K
    • Journal Title

      Biochem Biophys Res Commun

      Volume: 589 Pages: 35-40

    • DOI

      10.1016/j.bbrc.2021.12.003

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fusobacterium nucleatum exacerbates chronic obstructive pulmonary disease in elastase-induced emphysematous mice.2022

    • Author(s)
      Suzuki R, Kamio N, Kaneko T, Yonehara Y, Imai K.
    • Journal Title

      FEBS Open Bio.

      Volume: 12(3) Issue: 3 Pages: 638-648

    • DOI

      10.1002/2211-5463.13369

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Periodontopathic Bacterium Fusobacterium nucleatum Affects Matrix Metalloproteinase-9 Expression in Human Alveolar Epithelial Cells and Mouse Lung2022

    • Author(s)
      SUZUKI RYUTA、KAMIO NORIAKI、SUGIMOTO KOZUE、MARUOKA SHUICHIRO、GON YASUHIRO、KANEKO TADAYOSHI、YONEHARA YOSHIYUKI、IMAI KENICHI
    • Journal Title

      In Vivo

      Volume: 36 Issue: 2 Pages: 649-656

    • DOI

      10.21873/invivo.12749

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 歯周病原菌Porphyromonas gingivalisが産生するジンジパインはインフルエンザウイルスのヘマグルチニンを開裂させ感染を促進させる2024

    • Author(s)
      神尾宜昌,今井健一
    • Organizer
      第53回日本嫌気性菌感染症学会総会・学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 口腔に見出されるウイルスの存在意義-細菌-ウイルス相互作用-2022

    • Author(s)
      神尾 宜昌,今井 健一
    • Organizer
      第64回歯科基礎医学会学術大会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Oral bacterial neuraminidase enhances influenza virus infections.2021

    • Author(s)
      Noriaki Kamio, Kenichi Imai
    • Organizer
      The 25th Congress of the Asia Pacific Society of Respirology
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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

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