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Mechanisms of Bacterial Competition and Coordination: Adaptation to Hostile Environments

Research Project

Project/Area Number 18K19451
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 49:Pathology, infection/immunology, and related fields
Research InstitutionOsaka University

Principal Investigator

Nishino Kunihiko  大阪大学, 産業科学研究所, 教授 (30432438)

Project Period (FY) 2018-06-29 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords腸内細菌 / 異物排出 / トランスポーター / インドール / 胆汁酸 / 脂肪酸 / サルモネラ / 大腸菌 / 異種細菌 / 薬剤排出 / 耐性 / TolC / EmrAB / AcrAB / 検出 / tnaAB / 環境適応 / ポンプ / 系統解析 / 進化 / 阻害剤 / インフルエンザ菌 / 細菌 / 競合 / 協調 / 宿主
Outline of Final Research Achievements

This project aims to identify the signaling networks among heterologous bacteria and to elucidate the interactions between the molecules forming the networks and the signaling molecules and substances present in the host environment, and to detect and identify the mechanisms of competition and cooperation among heterologous bacteria and the substances present in them. In this study, regarding the drug efflux pumps that are involved in adaptation to the host environment and survival in the presence of heterologous bacteria, we conducted analyses on phylogenetic development of hundreds of pumps in heterologous bacteria, clarified the different roles of the pumps in different bacterial species, and elucidated their involvement in bile acid and fatty acid resistance. We also succeeded in detecting indole, which is produced by some bacteria in the intestine, by a method that does not rely on conventional extraction or enrichment.

Academic Significance and Societal Importance of the Research Achievements

これまで細菌の異物排出トランスポーターは、耐性化を理解するため研究が進められてきた。本研究により、胆汁酸や脂肪酸への抵抗性に関与していることが明らかになり、様々な細菌が生存している環境において、環境に応答するたにもトランスポーターが必要であることが分かった。さらに、数百種におよぶ系統解析は、他細菌や生物種に存在する未知のトランスポーターをより簡便に分類するためのツールとして役立つ。また、宿主環境適応におけるトランスポーターの生理的役割を理解する上でも役立つものである。さらに、腸内細菌が産生するインドールを簡便に検出する方法を開発した。成果は、細菌恒常性を破綻させることのできる創薬にもつながる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (19 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 7 results) Remarks (3 results)

  • [Int'l Joint Research] ユストゥス・リービッヒ大学ギーセン(ドイツ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ゲント大学(ベルギー)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Analysis of multidrug efflux transporters in resistance to fatty acid salts reveals a TolC-independent function of EmrAB in Salmonella enterica2022

    • Author(s)
      Yoneda Tomohiro、Sakata Hiroki、Yamasaki Seiji、Hayashi-Nishino Mitsuko、Nishino Kunihiko
    • Journal Title

      PLOS ONE

      Volume: 17 Issue: 4 Pages: e0266806-e0266806

    • DOI

      10.1371/journal.pone.0266806

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mutations in the Phenicol Exporter Gene fexA Impact Resistance Levels in Three Bacterial Hosts According to Susceptibility Testing and Protein Modeling2022

    • Author(s)
      M?ller Anja、Sakurai Keisuke、Seinige Diana、Nishino Kunihiko、Kehrenberg Corinna
    • Journal Title

      Frontiers in Microbiology

      Volume: 12 Pages: 794435-794435

    • DOI

      10.3389/fmicb.2021.794435

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Identification of Genetic Variants via Bacterial Respiration Gas Analysis2020

    • Author(s)
      Koga Naoki、Hosomi Takuro、Zwama Martijn、Jirayupat Chaiyanut、Yanagida Takeshi、Nishino Kunihiko、Yamasaki Seiji
    • Journal Title

      Frontiers in Microbiology

      Volume: 11 Pages: 581571-581571

    • DOI

      10.3389/fmicb.2020.581571

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 多剤排出ポンプの機能と阻害機構2020

    • Author(s)
      西野邦彦、山崎聖司、中島良介
    • Journal Title

      膜タンパク質工学ハンドブック

      Volume: 1-2-13 Pages: 83-92

    • Related Report
      2020 Research-status Report
  • [Journal Article] Phylogenetic and functional characterisation of the Haemophilus influenzae multidrug efflux pump AcrB2019

    • Author(s)
      Zwama Martijn、Yamaguchi Akihito、Nishino Kunihiko
    • Journal Title

      Communications Biology

      Volume: 2 Issue: 1 Pages: 340-340

    • DOI

      10.1038/s42003-019-0564-6

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of a structure determination method using a multidrug-resistance regulator protein as a framework2019

    • Author(s)
      Matsumoto Takashi、Nakashima Ryosuke、Yamano Akihito、Nishino Kunihiko
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 518 Issue: 2 Pages: 402-408

    • DOI

      10.1016/j.bbrc.2019.08.070

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Salmonella Enteritidis TolC outer membrane channel is essential for egg white survival2019

    • Author(s)
      Raspoet R.、Eeckhaut V.、Vermeulen K.、De Smet L.、Wen Y.、Nishino K.、Haesebrouck F.、Ducatelle R.、Devreese B.、Van Immerseel F.
    • Journal Title

      Poultry Science

      Volume: 98 Issue: 5 Pages: 2281-2289

    • DOI

      10.3382/ps/pey584

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 細菌薬剤排出ポンプと耐性菌新規判別手法2022

    • Author(s)
      西野邦彦
    • Organizer
      第56回 緑膿菌感染症学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 抗菌薬標的としての細菌薬剤排出ポンプ2021

    • Author(s)
      西野邦彦
    • Organizer
      日本細菌学会総会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Function and Regulation of Bacterial Multidrug Efflux Pumps2020

    • Author(s)
      Kunihiko Nishino
    • Organizer
      Croucher Advanced Study Institute 2020 Metals in Biology and Medicine: From Molecular Image to Drug Resistance
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Crystal structure of the multidrug resistance regulator RamR complexed with bile acids2019

    • Author(s)
      S. Yamasaki, R. Nakashima, K. Sakurai, S. Baucheron, E. Giraud, B. Doublet, A. Cloeckaert, K. Nishino
    • Organizer
      8th Symposium on Antimicrobial Resistance in Animals and the Environment
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Bacterial adaptation to the gut environment: a constant fight against bile and drugs2019

    • Author(s)
      K. Nishino
    • Organizer
      Taiwan-Japan Joint Seminar for biomedical informatics and engineering
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] K. Nishino2019

    • Author(s)
      Antibiotic-Resistant Bacteria: Biggest Threats and Data
    • Organizer
      The 1st AIRC-ISIR International Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] K. Nishino2019

    • Author(s)
      Antibiotic-Resistant Bacteria: Biggest Threats and Data
    • Organizer
      8th imec Handai International Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] researchmap

    • URL

      https://researchmap.jp/read0210124

    • Related Report
      2021 Annual Research Report
  • [Remarks] 大阪大学産業科学研究所

    • URL

      https://www.sanken.osaka-u.ac.jp

    • Related Report
      2019 Research-status Report
  • [Remarks] 生体分子制御科学研究分野(西野研)

    • URL

      https://www.sanken.osaka-u.ac.jp/organization/thi/thi_06/

    • Related Report
      2019 Research-status Report

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Published: 2018-07-25   Modified: 2023-01-30  

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