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Identification of novel in vivo bacterial essential factors for blood stream infection-specific therapy

Research Project

Project/Area Number 19K16648
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 49050:Bacteriology-related
Research InstitutionSapporo Medical University

Principal Investigator

SATO TOYOTAKA  札幌医科大学, 医学部, 講師 (30756474)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords細菌学 / 細菌感染症 / 薬剤耐性菌 / 血流感染症 / 生体内菌発育必須因子(vivoEF) / 生体内菌発育必須因子 / 大腸菌 / vivoEF阻害剤 / 細菌 / 多剤耐性
Outline of Research at the Start

敗血症といった細菌性血流感染症による死亡率は増加の一途をたどっており、多剤耐性菌はその治療を一層困難にしている。本研究では、新たな耐性菌を生み出さない多剤耐性菌感染症治療戦略の確立を最終目標とし、既存の抗菌性物質の標的とは全く異なる細菌因子である『生体内菌発育必須因子(vivoEF) 』に着目した研究を行う。

Outline of Final Research Achievements

Bloodstream infections such as sepsis are sometimes life-threatening and serious diseases, and most of them are caused by bacterial infections. In this study, we searched for and identified bacterial factors of pathogens necessary for the establishment of bloodstream infections such as the disease sepsis, and identified several bacterial factors essential for survival in the blood. We also succeeded in identifying compounds that suppress the function of these bacterial factors.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、細菌感染症の中でも生命に重篤な影響を及ぼす可能性が高い敗血症などの血流感染症の発症に必要となる細菌側の要因を詳細に解析したものである。よって、本研究によって発見された同定された細菌因子を抑制する物質は、新規の血流感染症治療薬となり得る可能性を秘めている。また、本研究によって明らかにされた血流感染症の成立に必要な細菌因子は将来的な新規の細菌性血流感染症治療の際の新たなターゲットになる可能性を秘めている。

Report

(2 results)
  • 2020 Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2020 2019

All Journal Article (7 results) (of which Peer Reviewed: 7 results) Presentation (7 results) (of which Invited: 2 results)

  • [Journal Article] Campylobacter upsaliensis isolated from a giant hepatic cyst2020

    • Author(s)
      Ohkoshi Yasuo、Sato Toyotaka、Murabayashi Hiromi、Sakai Kohei、Takakuwa Yasunari、Fukushima Yukari、Nakajima Chie、Suzuki Yasuhiko、Yokota Shin-ichi
    • Journal Title

      Journal of Infection and Chemotherapy

      Volume: S1341-321X(20) Issue: 7 Pages: 30063-5

    • DOI

      10.1016/j.jiac.2020.02.015

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Contribution of β-lactamase and efflux pump overproduction to tazobactam-piperacillin resistance in clinical isolates of Escherichia coli2020

    • Author(s)
      Suzuki Yuuki、Sato Toyotaka、Fukushima Yukari、Nakajima Chie、Suzuki Yasuhiko、Takahashi Satoshi、Yokota Shin-ichi
    • Journal Title

      International Journal of Antimicrobial Agents

      Volume: online ahead of print Issue: 4 Pages: 105919-105919

    • DOI

      10.1016/j.ijantimicag.2020.105919

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Prevalence and characterization of Clostridioides difficile isolates from retail food products (vegetables and meats) in Japan2020

    • Author(s)
      Usui Masaru、Maruko Aika、Harada Michiko、Kawabata Fumi、Sudo Tsubasa、Noto Sayo、Sato Toyotaka、Shinagawa Masaaki、Takahashi Satoshi、Tamura Yutaka
    • Journal Title

      Anaerobe

      Volume: 61 Pages: 102132-102132

    • DOI

      10.1016/j.anaerobe.2019.102132

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Clonality investigation of clinical Escherichia coli isolates by polymerase chain reaction-based open-reading frame typing method2020

    • Author(s)
      Saeki Masachika、Sato Toyotaka、Furuya Daisuke、Yakuwa Yuki、Sato Yuki、Kobayashi Ryo、Ono Mayumi、Nirasawa Shinya、Tanaka Makito、Nakafuri Hirotaka、Nakae Mami、Shinagawa Masaaki、Asanuma Kouichi、Yanagihara Nozomi、Yokota Shin-ichi、Takahashi Satoshi
    • Journal Title

      Journal of Infection and Chemotherapy

      Volume: 26 Issue: 1 Pages: 38-42

    • DOI

      10.1016/j.jiac.2019.06.014

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] In Vitro Derivation of Fluoroquinolone-Resistant Mutants from Multiple Lineages of Haemophilus influenzae and Identification of Mutations Associated with Fluoroquinolone Resistance2019

    • Author(s)
      Honda Hiroyuki、Sato Toyotaka、Shinagawa Masaaki、Fukushima Yukari、Nakajima Chie、Suzuki Yasuhiko、Kuronuma Koji、Takahashi Satoshi、Takahashi Hiroki、Yokota Shin-ichi
    • Journal Title

      Antimicrobial Agents and Chemotherapy

      Volume: 64 Issue: 2

    • DOI

      10.1128/aac.01500-19

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Synthesis and biological evaluation of a MraY selective analogue of tunicamycins2019

    • Author(s)
      Yamamoto Kazuki、Sato Toyotaka、Hikiji Yuta、Katsuyama Akira、Matsumaru Takanori、Yakushiji Fumika、Yokota Shin-Ichi、Ichikawa Satoshi
    • Journal Title

      Nucleosides, Nucleotides and Nucleic Acids

      Volume: 39 Issue: 1-3 Pages: 349-364

    • DOI

      10.1080/15257770.2019.1649696

    • NAID

      120006887715

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Evaluation of Susceptibilities to Carbapenems and Faropenem Against Cephalosporin-Resistant Neisseria gonorrhoeae Clinical Isolates with penA Mosaic Alleles2019

    • Author(s)
      Hiyama Yoshiki、Takahashi Satoshi、Sato Toyotaka、Shinagawa Masaaki、Fukushima Yukari、Nakajima Chie、Suzuki Yasuhiko、Masumori Naoya、Yokota Shin-ichi
    • Journal Title

      Microbial Drug Resistance

      Volume: 25 Issue: 3 Pages: 427-433

    • DOI

      10.1089/mdr.2018.0263

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 生体内菌発育必須因子(vivoEF)を標的とする感染部位特異的(ピンポイント)抗菌薬のスクリーニング2019

    • Author(s)
      佐藤 豊孝、小笠原徳子、霧島正浩、高橋 聡、横田 伸一
    • Organizer
      第68回日本感染症学会東日本地方会学術集会・第66回日本化学療法学会東日本支部総会合同学会
    • Related Report
      2019 Research-status Report
  • [Presentation] 伴侶動物領域におけるESBL産生菌の現状2019

    • Author(s)
      佐藤 豊孝、田村 豊、高橋 聡、横田 伸一
    • Organizer
      第68回日本感染症学会東日本地方会学術集会・第66回日本化学療法学会東日本支部総会合同学会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 人臨床検体から分離された腸内細菌科細菌のコリスチン感受性および分子遺伝学的解析2019

    • Author(s)
      佐藤 豊孝、品川 雅明、高橋 聡、横田 伸一
    • Organizer
      第67回日本化学療法学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] 既存抗菌薬の概念にとらわれない抗菌活性物質の検索とその評価2019

    • Author(s)
      佐藤 豊孝
    • Organizer
      医薬品産業情報研究会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 感染部位特異的細菌感染症治療法の確立に向けたvivoEF阻害剤の検索2019

    • Author(s)
      佐藤 豊孝
    • Organizer
      BioJapan 2019
    • Related Report
      2019 Research-status Report
  • [Presentation] 生体内菌発育必須因子(vivoEF)に着目した細菌性血流感染症特異的vivoEF阻害剤の特性と作用メカニズムの解析2019

    • Author(s)
      佐藤 豊孝、山本 聡、白石 宗、小笠原 徳子、髙橋 聡、横田 伸一
    • Organizer
      日本細菌学会北海道支部会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] コリスチン耐性の付与が及ぼす大腸菌の病原性変化2019

    • Author(s)
      佐藤豊孝, 山本聡、小笠原徳子、臼井優、鈴木仁人、林航、長野則之、土井洋平、田村豊、髙橋聡、横田伸一
    • Organizer
      第48回耐性菌研究会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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