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Oral biofilm inhibition or dispersal by bacterial supernatant

Research Project

Project/Area Number 20K18485
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57020:Oral pathobiological science-related
Research InstitutionKyushu Dental College

Principal Investigator

Yamasaki Ryota  九州歯科大学, 歯学部, 助教 (70841998)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords口腔疾患 / 口腔ケア / 口腔病原細菌 / バイオフィルム / バイオサーファクタント / 口腔細菌 / ラムノリピッド / サーファクチン / 殺菌 / 口腔バイオフィルム / 菌液上清 / 歯周病原性細菌 / 齲蝕原性細菌 / 分散・抑制 / 歯周病 / 齲蝕 / 全身疾患
Outline of Research at the Start

口腔疾患(歯周病や齲蝕)は口腔病原細菌のバイオフィルムによって引き起こされる。これらの口腔病原細菌は口腔疾患にとどまらず、菌血症を介して重篤な全身疾患に繋がることが近年明らかになっている。ゆえに口腔バイオフィルムを分散・抑制することは口腔疾患の抑制だけではなく全身疾患を抑制することに繋がる。本研究ではバイオフィルム形成に関与する化合物を含む様々な菌種の”菌液上清”を用い、口腔病原細菌が形成するバイオフィルムへの効果を検証する。更には菌液上清内の成分で最も効果を発揮する成分を特定することで、その化合物を応用した医薬品など新規薬剤開発を目指す。

Outline of Final Research Achievements

Oral diseases such as dental caries and periodontal disease can affect anyone. These oral diseases have recently been recognized to cause serious and sometimes life-threatening systemic diseases. The purpose of this study is to search for effective components in substances secreted by bacteria, and to develop new oral care agents. Pseudomonas aeruginosa and Bacillus subtilis each secrete unique biosurfactants, which have been shown to exhibit high antibacterial activity against oral pathogenic bacteria.

Academic Significance and Societal Importance of the Research Achievements

口腔病原細菌が引きおこす全身疾患に感染性心内膜炎や誤嚥性肺炎がある。これらは特にお年寄りに多く、超高齢化社会を迎える我が国では軽視できない問題となっている。身体面や精神面の問題で十分な口腔ケアが行えず、口腔環境が悪化し口腔疾患や全身疾患を招いている。ゆえに簡便にかつ安全に口腔ケアが行える薬剤の開発が求められており、本研究はそれらをターゲットとした重要な意義を担っている。

Report

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

    (9 results)

All 2022 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Quick and environmentally friendly sterilization process of dental instruments by radical vapor reactor2022

    • Author(s)
      Okita Kaede、Yamasaki Ryota、Nakamura Yohei、Sakakura Tatsuya、Kawano Aki、Takatsuji Yoshiyuki、Haruyama Tetsuya、Yoshioka Yoshie、Ariyoshi Wataru
    • Journal Title

      Process Biochemistry

      Volume: 113 Pages: 22-26

    • DOI

      10.1016/j.procbio.2021.12.014

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnesium Hydroxide Nanoparticles Kill Exponentially Growing and Persister Escherichia coli Cells by Causing Physical Damage2021

    • Author(s)
      Nakamura Yohei、Okita Kaede、Kudo Daisuke、Phuong Dao Nguyen Duy、Iwamoto Yoshihito、Yoshioka Yoshie、Ariyoshi Wataru、Yamasaki Ryota
    • Journal Title

      Nanomaterials

      Volume: 11 Issue: 6 Pages: 1584-1584

    • DOI

      10.3390/nano11061584

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Rhamnolipids and surfactin inhibit the growth or formation of oral bacterial biofilm2020

    • Author(s)
      Yamasaki Ryota、Kawano Aki、Yoshioka Yoshie、Ariyoshi Wataru
    • Journal Title

      BMC Microbiology

      Volume: 20 Issue: 1

    • DOI

      10.1186/s12866-020-02034-9

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reactive Oxygen Species Penetrate Persister Cell Membranes of Escherichia coli for Effective Cell Killing2020

    • Author(s)
      Kawano Aki、Yamasaki Ryota、Sakakura Tatsuya、Takatsuji Yoshiyuki、Haruyama Tetsuya、Yoshioka Yoshie、Ariyoshi Wataru
    • Journal Title

      Frontiers in Cellular and Infection Microbiology

      Volume: 10 Pages: 1-13

    • DOI

      10.3389/fcimb.2020.00496

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Magnesium hydroxide nanoparticles kill Escherichia coli exponential or persister cells physically2021

    • Author(s)
      Ryota Yamasaki, Yohei Nakamura, Kaede Okita, Daisuke Kudo, Dao Nguyen Duy Phuong, Yoshihito Iwamoto, Yoshie Yoshioka, Wataru Ariyoshi
    • Organizer
      Asia-Pacific Conference 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Short-time sterilization of the dental instruments by radical vapor reactor2021

    • Author(s)
      Kaede Okita, Yohei Nakamura, Ryota Yamasaki, Tatsuya Sakakura, Aki Kawano, Yoshiyuki Takatsuji, Tetsuya Haruyama, Yoshie Yoshioka, Wataru Ariyoshi
    • Organizer
      Asia-Pacific Conference 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] メタン微生物燃料電池の開発と高効率化2021

    • Author(s)
      山﨑 亮太
    • Organizer
      電気化学会トークシャワーin九州
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 過酸化水素処理によって生じる Aggregatibacter actinomycetemcomitans persiterの形成メカニズムとその排除2021

    • Author(s)
      中村 鷹平,山崎 亮太,有吉 渉,吉岡 香絵
    • Organizer
      第63回 歯科基礎医学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] β-glucan による破骨細胞における NFATc1 の発現抑制の分子メカニズムの解明2021

    • Author(s)
      古賀 絢雅,吉岡 香絵,山崎 亮太,藤井 航,有吉 渉
    • Organizer
      第63回 歯科基礎医学会
    • Related Report
      2021 Annual Research Report

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Published: 2020-04-28   Modified: 2023-01-30  

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