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The development of high-snsitivity detection system of bacteria-derived membrane vesicle and detection of membrane vesicle in the chronic inflamatory vascular deseases

Research Project

Project/Area Number 20K09943
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57030:Conservative dentistry-related
Research InstitutionAichi Medical University (2021, 2023)
Oita University (2020)

Principal Investigator

Miyazaki Hidetaka  愛知医科大学, 医学部, 准教授 (70420271)

Co-Investigator(Kenkyū-buntansha) 中尾 龍馬  国立感染症研究所, 細菌第一部, 主任研究官 (10370959)
工藤 敏文  東京医科歯科大学, 大学院医歯学総合研究科, 准教授 (50431911)
平山 悟  新潟大学, 医歯学系, 助教 (70778555)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords歯周病 / Porphyromonus gingivalis / Pg / メンブレンヴェシクル / 細菌 / ワクチン / 慢性炎症
Outline of Research at the Start

口腔細菌の関与とそのメカニズムを解明することを目指して、本研究では以下の一連の研究計画を立てた。まずMVが口腔粘膜上皮や 血管内皮を攻撃した時に生じる炎症・免疫応答を包括的に検討する。さらに高速原子間力顕微鏡を活用し、MV添加による各種細胞の形態変化をリアルタイムでナノイメージングする。 一方で、Pgに由来するMVの高感度検出法を確立し、実験モデル動物や実際の歯周病患者、糖尿病患者、下腿の潰瘍の患者などから臨床検体 (唾液・血液・切除組織など)を得て、臨床検体からのPgの単離やMVの同定を行う。

Outline of Final Research Achievements

We focused on the fact that membrane vesicles (MVs) released by Porphyromonus gingivalis, the main causative agent of periodontal disease, contain pathogenic and immunologically active factors, and performed a series of studies to elucidate the effects of MVs on the body. We performed a series of studies to elucidate the effects of MVs on living organisms. As a result, the characteristic structure of membrane vesicles, their cytotoxicity, and effects on living organisms have been clarified. We have also started development of a vaccine using MVs. It is speculated that the analysis of membrane vesicles of oral bacteria will become an important key to understand the cause and progression of not only periodontal disease but also systemic diseases.

Academic Significance and Societal Importance of the Research Achievements

歯周病の主たる原細菌であるPorphyromonus gingivalis (以下Pg)は、近年歯周病のみならず全身に生ずる様々な炎症性疾患の発症起点もしくは増悪因子となると考えられているが、その詳細は明らかになっていなかった。われわれは細菌が放出する膜小胞(メンブレン・ヴェシクル)が病原因子・免疫活性因子を内包していることに着目し、研究を行った。その結果、膜小胞の特徴的な構造や生体へ与える影響が明らかとなってきた。今後の膜小胞の解析が口腔細菌と全身疾患の関わりを考える上での重要な鍵となることが推測された。

Report

(2 results)
  • 2023 Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (8 results)

All 2021

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

  • [Journal Article] Effects of oral moisturizing gel containing propolis following head and neck radiotherapy: randomized controlled pilot trial2021

    • Author(s)
      Ryoma Nakao and Takao Ueno
    • Journal Title

      BDJ Open

      Volume: 7 Issue: 1 Pages: 12-12

    • DOI

      10.1038/s41405-021-00068-3

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of oral moisturizing gel containing propolis following head and neck radiotherapy: randomized controlled pilot trial2021

    • Author(s)
      Ryoma Nakao, Takao Ueno
    • Journal Title

      BDJ Open

      Volume: 7 Issue: 10 Pages: 12-12

    • DOI

      10.3390/pathogens10101286

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of pH on the properties of membrane vesicles including glucosyltransferase in Streptococcus mutans2021

    • Author(s)
      Yusuke Iwabuchi, Tomoyo Nakamura, Yasuka Kusumoto, Ryoma Nakao, Tsutomu Iwamoto, Osamu Shinozuka, Hidenobu Senpuku
    • Journal Title

      Microorganisms

      Volume: 9 Issue: 11 Pages: 2308-2308

    • DOI

      10.3390/microorganisms9112308

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] P. gingivalis の膜小胞産生誘導及び迅速な殺菌効果を示すフェンネル抽出物2021

    • Author(s)
      吉野七海、池田剛、中尾龍馬
    • Organizer
      第94回日本細菌学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 細菌由来メンブレンヴェシクル:その優れた特性を活用したワクチン開発2021

    • Author(s)
      中尾龍馬
    • Organizer
      第94回日本細菌学会
    • Related Report
      2021 Research-status Report
  • [Presentation] グリシンにより誘導された細菌メンブレンベシクルの性質とアジュバント活性の解析2021

    • Author(s)
      Hirayama S, Nakao R.
    • Organizer
      第63回歯科基礎医学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Prospective vaccine strategy using bacterial membrane vesicles delivered into nasal cavity2021

    • Author(s)
      Ryoma Nakao
    • Organizer
      EMBO Workshop: Bacterial Membrane Vesicles: Biogenesis, functions, and medical applications
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of anti-TB vaccine using mycobacterial membrane vesicles2021

    • Author(s)
      Takehiro Yamaguchi, Noriaki Samukawa, Ryoma Nakao and Shuhei Tomita
    • Organizer
      EMBO Workshop: Bacterial Membrane Vesicles: Biogenesis, functions, and medical applications
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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