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Mechanism of induction of epithelial-mesenchymal transition by periodontal pathogenic bacteria

Research Project

Project/Area Number 18K17066
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57030:Conservative dentistry-related
Research InstitutionOsaka University

Principal Investigator

Ohshima Jun  大阪大学, 歯学研究科, 助教 (30755450)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords歯学 / 微生物学 / 口腔細菌学 / 上皮間葉転換 / 口腔感染症
Outline of Final Research Achievements

In this study, we focused on epithelial-mesenchymal transition (EMT) induced by P. gingivalis, a major periodontal pathogenic bacterium, and aimed to elucidate a novel mechanism by which periodontal pathogenic bacteria disrupt gingival barrier function. As the results, we found that P. gingivalis induces EMT through β-catenin signaling, indicating that FOXO1 is an important nuclear transcription factor that interacts with β-catenin. Furthermore, Streptococcus gordonii, an oral indigenous bacterium, significantly inhibited the induction of EMT by P. gingivalis by preventing the nuclear translocation of FOXO1.

Academic Significance and Societal Importance of the Research Achievements

P. gingivalisによる病的なEMTの促進は、歯肉上皮細胞の上皮としての特性を失わせることにつながり、歯肉の物理的・生物学的なバリア機能を大きく破綻させる可能性がある。したがって、本研究によって得られたEMT誘導機構における新たな知見により、P. gingivalisがもつ歯周病における病原性発現機序の新たな側面を明らかにすることができた。また、本研究を通じて明らかとなった歯周病原性細菌による病的EMT誘導に関わる分子(β‐カテニン、FOXO1など)を標的とした新規の創薬・治療戦略につながることが期待される。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (5 results)

All 2019 2018

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

  • [Journal Article] Streptococcus gordoniiprograms epithelial cells to resist ZEB2 induction byPorphyromonas gingivalis2019

    • Author(s)
      Ohshima Jun、Wang Qian、Fitzsimonds Zackary R.、Miller Daniel P.、Sztukowska Maryta N.、Jung Young-Jung、Hayashi Mikako、Whiteley Marvin、Lamont Richard J.
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 116 Issue: 17 Pages: 8544-8553

    • DOI

      10.1073/pnas.1900101116

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Porphyromonas gingivalis Tyrosine Phosphatase Php1 Promotes Community Development and Pathogenicity2019

    • Author(s)
      Jung Young-Jung、Miller Daniel P.、Perpich John D.、Fitzsimonds Zackary R.、Shen Daonan、Ohshima Jun、Lamont Richard J.
    • Journal Title

      mBio

      Volume: 10 Issue: 5

    • DOI

      10.1128/mbio.02004-19

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Streptococcus gordonii antagonizes Porphyromonas gingivalis-mediated signaling in epithelial cells.2019

    • Author(s)
      Fitzsimonds ZR, Ohshima J, Wang Q, Sztukowska MN, Miller DP, Lamont RJ.
    • Organizer
      97th International Association for Dental Research General Session.
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Porphyromonas gingivalis induces mesenchymal-like transition through beta-catenin signaling.2019

    • Author(s)
      Ohshima J, Hayashi M, Lamont RJ.
    • Organizer
      97th International Association for Dental Research General Session.
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Porphyromonas gingivalis はβ-カテニンシグナルを介して歯肉上皮細胞に上皮間葉転換を誘導する2018

    • Author(s)
      大嶋 淳、林 美加子
    • Organizer
      第148回日本歯科保存学会春季学術大会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2021-02-19  

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