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Establishment of new oral biofilm formation control system targeting membrane proteins

Research Project

Project/Area Number 20H03897
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 57070:Developmental dentistry-related
Research InstitutionOkayama University

Principal Investigator

Nakano Michiyo  岡山大学, 医歯薬学域, 教授 (30359848)

Co-Investigator(Kenkyū-buntansha) 仲 周平  岡山大学, 大学病院, 講師 (10589774)
稲葉 裕明  岡山大学, 医歯薬学域, 准教授 (70359850)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2022: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2020: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
KeywordsStreptococcus mutans / バイオフィルム / 膜タンパク / ABC膜輸送体 / シグナル伝達システム / グラム陽性細菌 / グラム陰性細菌
Outline of Research at the Start

バイオフィルムを形成する細菌は高い抗菌物質耐性機構を獲得しており、バイオフィルムが簡単には除去できない要因となっている。これらの完全な除去および再形成の抑制は非常に困難であるため、機械的清掃に加えて「局所に有効な薬剤を適用する」ことで根本療法の構築につなげたいと考えてきた。バイオフィルム形成は、細胞―細胞間情報伝達機構であるクオラムセンシングにより制御されており、必要な栄養素を取り込み不要な物質を排出する役割を持つ「膜タンパク」が関与しているがその詳細は不明である。本研究の目的は、分子生物学的手法を用いて齲蝕および歯周病の主要な起炎菌における膜タンパクの役割を明らかにすることである。

Outline of Final Research Achievements

Streptococcus mutans, reported to be associated with dental caries induction, also forms biofilm. ATP-binding cassette (ABC) transporters exist in cell membranes, and function to export and import molecules. In the present study, functional analyses of the SMU1519 gene, predicted to be a zinc transporter, regarding its relationship to biofilm formation by S. mutans were performed. S. mutans MT8148 (serotype c) and an isogenic mutant strain with inactivation of the SMU1519 gene, termed ΔSMU1519, were used. The growth rate of ΔSMU1519 was slightly lower than that of MT8148, though in the presence of ZnSO4, there was no difference between them. Furthermore, while the biomass of biofilms formed by ΔSMU1519 was significantly lower than that of MT8148 biofilms, the difference between them was even greater in the presence of ZnSO4.
These results suggest that SMU1519 contributes to zinc transport by S. mutans, which is related to biofilm formation by the organism.

Academic Significance and Societal Importance of the Research Achievements

Streptococcus mutans の保有するABC膜輸送体はクオラムセンシングの主要タンパクである膜タンパクの一つであり、菌の生存に必要な物質の輸送だけでなく、バイオフィルム形成能に関与する可能性が示唆されている。クオラムセンシングによってバイフォイルム形成は制御されているため、ABC膜輸送体の機能を明らかにすることはバイフォイルム形成制御メカニズムの解明につながる可能性が高い。本研究で同定したABC膜輸送体は亜鉛の輸送体として機能し、バイオフィルム形成に関与していた。この結果は、バイオフィルム形成を抑制物質を開発する上で、ABC膜輸送体が新たなターゲットとなる可能性が示された。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (20 results)

All 2022 2021 2020

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (12 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Cnm of Streptococcus mutans is important for cell surface structure and membrane permeability2022

    • Author(s)
      Naka S, Matsuoka D, Goto K, Misaki T, Nagasawa Y, Ito S, Nomura R, Nakano K, Matsumoto-Nakano M
    • Journal Title

      Front Cell Infect Microbiol.

      Volume: - Pages: 994014-994014

    • DOI

      10.3389/fcimb.2022.994014

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Distribution of periodontopathic bacterial species between saliva and tonsils2022

    • Author(s)
      Nomura Ryota, Nagasawa Yasuyuki, Misaki Taro, Ito Seigo, Naka Shuhei、Okunaka Mieko、Watanabe Maiko, Tsuzuki Kenzo, Matsumoto-Nakano Michiyo, Nakano Kazuhiko
    • Journal Title

      Odontology

      Volume: 10 Issue: 3 Pages: 719-72

    • DOI

      10.1007/s10266-022-00776-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Efficacy of FimA antibody and clindamycin in silkworm larvae stimulated with Porphyromonas gulae.2021

    • Author(s)
      Yoshida S, Inaba H, Nomura R, Murakami M, Yasuda H, Nakano K, Matsumoto-Nakano M
    • Journal Title

      Journal of Oral Microbiology

      Volume: 13 Issue: 1 Pages: 1914499-1914499

    • DOI

      10.1080/20002297.2021.1914499

    • NAID

      120007037383

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibitory effects of flavedo, albedo, fruits, and leaves of Citrus unshiu extracts on Streptococcus mutans.2021

    • Author(s)
      Nomura R, Ohata J, Otsugu M, Okawa R, Naka S, Matsumoto-Nakano M, Nakano K.
    • Journal Title

      Archives of Oral Biology

      Volume: 124 Pages: 105056-105056

    • DOI

      10.1016/j.archoralbio.2021.105056

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Roles of Porphyromonas gulae proteases in bacterial and host cell biology2021

    • Author(s)
      Urmi AS, Inaba H, Nomura R, Yoshida S, Ohara N, Asai F, Nakano K, Matsumoto-Nakano M
    • Journal Title

      Cellular Microbiology

      Volume: in press Issue: 8

    • DOI

      10.1111/cmi.13312

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification and functional analysis of glutamine transporter in Streptococcus mutans2020

    • Author(s)
      Morikawa Y, Morimoto S, Yoshida E, Naka S, Inaba H, Matsumoto-Nakano M
    • Journal Title

      Journal of Oral Microbiology

      Volume: 12 Issue: 1 Pages: 1797320-1797320

    • DOI

      10.1080/20002297.2020.1797320

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibition of Porphyromonas gulae and periodontal disease in dogs by a combination of clindamycin and interferon alpha2020

    • Author(s)
      Nomura R*, Inaba H*, Yasuda H*, Shirai M, Kato Y, Murakami M, Iwashita N, Shirahata S, Yoshida S, Matayoshi S, Yasuda J, Arai N, Asai F, Matsumoto-Nakano M, Nakano K. (*Contributed equally)
    • Journal Title

      Scientific reports

      Volume: 22 Issue: 12

    • DOI

      10.1111/cmi.13254

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Oral Lactobacilli Related to Caries Status of Children with Primary Dentition2020

    • Author(s)
      Lapirattanakul Jinthana、Nomura Ryota、Okawa Rena、Morimoto Setsuyo、Tantivitayakul Pornpen、Maudcheingka Thaniya、Nakano Kazuhiko、Matsumoto-Nakano Michiyo
    • Journal Title

      Caries Research

      Volume: 54 Issue: 2 Pages: 194-204

    • DOI

      10.1159/000506468

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 口腔バイオフィルム形成におけるABC膜輸送体の機能解析2022

    • Author(s)
      後藤花奈、仲野道代
    • Organizer
      第41回日本小児歯科学会中四国地方会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Streptococcus mutans のコラーゲン結合タンパク Cnm の構造解析2022

    • Author(s)
      松岡大貴,仲 周平,稲葉裕明,仲野道代
    • Organizer
      第41回日本小児歯科学会中四国地方会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 亜鉛の細胞膜輸送に関連するABCトランスポーターの機能解析2022

    • Author(s)
      後藤花奈、仲野道代
    • Organizer
      第60回日本小児歯科学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Streptococcus mutans コラーゲン結合タンパク Cnm の病原性に関する検討2022

    • Author(s)
      松岡大貴,仲 周平,後藤花奈,野村良太,仲野和彦,仲野道代
    • Organizer
      第60回日本小児歯科学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Streptococcus mutansのバイオフィルム形成におけるABC膜輸送体の機能解析2021

    • Author(s)
      後藤 花奈, 仲野 道代
    • Organizer
      第59回日本小児歯科学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 口腔バイオフィルム形成における ABC 膜輸送体の機能解析2021

    • Author(s)
      後藤 花奈, 仲野 道代
    • Organizer
      第 40 回日本小児小児歯科学会中四国地方会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Role of ABC transporter in biofilm formation by Streptococcus mutans2021

    • Author(s)
      K. Goto, M. Matsumoto-Nakano
    • Organizer
      69th JADR
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Streptococcus mutans のバイオフィルム形成における ABC 膜輸送体の機能解析2021

    • Author(s)
      後藤 花奈, 仲野 道代
    • Organizer
      第 59 回日本小児歯科学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ABC transporter activities in biofilm formation by Streptococcus mutans2020

    • Author(s)
      Goto K, Matsumoto-Nakano M
    • Organizer
      68th Annual Meeting of JADR
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Streptococcus mutans におけるDnaKの表層タンパク発現への影響と役割2020

    • Author(s)
      吉田衣里、松三友紀、森川優子、仲 周平、高島 由紀子、仲野道代
    • Organizer
      第58回日本小児歯科学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] The role of Porohyromonas gulae protease on bacterial growth and hemagglutination2020

    • Author(s)
      Alam Urmi Saki, 稲葉 裕明, 吉田 翔, 野村 良太, 仲野 和彦, 仲野 道代
    • Organizer
      第58回日本小児歯科学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Inhibitory effect of cyclodextran on glucosyltransferase B in Streptococcus mutans.2020

    • Author(s)
      Asaumi H, Goto K, Matsumoto-Nakano M
    • Organizer
      68th Annual Meeting of JADR
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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