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Molecular analysis for pathogenesis of SubAB produced by Enterohemorrhagic Escherichia coli through the inhibitory effects on host innate immunity

Research Project

Project/Area Number 17K10019
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Infectious disease medicine
Research InstitutionKumamoto University

Principal Investigator

Tsutsuki Hiroyasu  熊本大学, 大学院生命科学研究部(医), 助教 (40586608)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords腸管出血性大腸菌 / Subtilase cytotoxin / 自然免疫 / インフラマソーム / 小胞体ストレス / 宿主防御機構 / 細菌毒素
Outline of Final Research Achievements

Subtilase cytotoxin (SubAB), a toxin produced by Enterohemorrhagic Escherichia coli, induces cytotoxicity through Endoplasmic reticulum (ER) stress. Here we investigated the molecular mechanisms of inhibitory effects of SubAB on host innate immunity. We found that SubAB inhibited IL-1β production and inflammasome activation in macrophages. As a result of mouse infection model, SubAB increased the number of pathogenic bacteria in mouse feces. These data suggested that SubAB enhance EHEC colonization through inhibition of host innate immunity.

Academic Significance and Societal Importance of the Research Achievements

腸管出血性大腸菌(EHEC)の主な病原因子は志賀毒素であり、血清型O157が最も知られているが、O111やO104など様々な血清型のEHECも集団食中毒を起こしている。近年、新たな毒素SubABを産生するO113などが臨床患者から検出される事例が増加している。これまでEHEC感染病態におけるSubABの役割は不明であり、制御法は開発されていない。本研究提案は、EHEC 感染病態におけるSubAB の役割を解明することで、新たな治療戦略の立案に役立つ。未知の炎症機構の発見にも繋がり、細菌学研究にとどまらず、病態生理・感染症学分野を含む臨床応用研究領域に全く新しい知見を与えることが期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (27 results)

All 2020 2019 2018 2017 Other

All Journal Article (10 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (15 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Preparation of Biodegradable PLGA-Nanoparticles Used for pH-Sensitive Intracellular Delivery of an Anti-inflammatory Bacterial Toxin to Macrophages2020

    • Author(s)
      Harada Ayaka、Tsutsuki Hiroyasu、Zhang Tianli、Lee Ruda、Yahiro Kinnosuke、Sawa Tomohiro、Niidome Takuro
    • Journal Title

      Chemical and Pharmaceutical Bulletin

      Volume: 68 Issue: 4 Pages: 363-368

    • DOI

      10.1248/cpb.c19-00917

    • NAID

      130007824942

    • ISSN
      0009-2363, 1347-5223
    • Year and Date
      2020-04-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Involvement of protein disulfide isomerase in subtilase cytotoxin-induced cell death in HeLa cells2020

    • Author(s)
      Tsutsuki Hiroyasu、Zhang Tianli、Harada Ayaka、Rahman Azizur、Ono Katsuhiko、Yahiro Kinnosuke、Niidome Takuro、Sawa Tomohiro
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 525 Issue: 4 Pages: 1068-1073

    • DOI

      10.1016/j.bbrc.2020.03.008

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 8-Nitro-cGMP modulates exocytosis in adrenal chromaffin cells2020

    • Author(s)
      Tsutsuki Hiroyasu、Kasamatsu Shingo、Kunieda Kohei、Ida Tomoaki、Sawa Tomohiro、Sasakawa Nobuyuki、Akaike Takaaki、Ihara Hideshi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: in press Issue: 1 Pages: 225-230

    • DOI

      10.1016/j.bbrc.2020.03.045

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synthesis of Pegylated Manganese Protoporphyrin as a Catalase Mimic and Its Therapeutic Application to Acetaminophen-Induced Acute Liver Failure2019

    • Author(s)
      Zhang Tianli、Fang Jun、Tsutsuki Hiroyasu、Ono Katsuhiko、Islam Waliul、Sawa Tomohiro
    • Journal Title

      Biological and Pharmaceutical Bulletin

      Volume: 42 Issue: 7 Pages: 1199-1206

    • DOI

      10.1248/bpb.b19-00152

    • NAID

      130007672166

    • ISSN
      0918-6158, 1347-5215
    • Year and Date
      2019-07-01
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gold-Treated Silver Nanoparticles Have Enhanced Antimicrobial Activity2019

    • Author(s)
      Harada Ayaka、Ichimaru Hiroaki、Kawagoe Takayuki、Tsushida Masayuki、Niidome Yasuro、Tsutsuki Hiroyasu、Sawa Tomohiro、Niidome Takuro
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 92 Issue: 2 Pages: 297-301

    • DOI

      10.1246/bcsj.20180232

    • NAID

      130007595735

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Enhanced Cellular Polysulfides Negatively Regulate TLR4 Signaling and Mitigate Lethal Endotoxin Shock2019

    • Author(s)
      Zhang Tianli、Ono Katsuhiko、Tsutsuki Hiroyasu、Ihara Hideshi、Islam Waliul、Akaike Takaaki、Sawa Tomohiro
    • Journal Title

      Cell Chemical Biology

      Volume: in press Issue: 5 Pages: 686-698.e4

    • DOI

      10.1016/j.chembiol.2019.02.003

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanism of inhibition of Shiga-toxigenic Escherichia coli SubAB cytotoxicity by steroids and diacylglycerol analogues2018

    • Author(s)
      Yahiro Kinnosuke、Nagasawa Sayaka、Ichimura Kimitoshi、Takeuchi Hiroki、Ogura Kohei、Tsutsuki Hiroyasu、Shimizu Takeshi、Iyoda Sunao、Ohnishi Makoto、Iwase Hirotaro、Moss Joel、Noda Masatoshi
    • Journal Title

      Cell Death Discovery

      Volume: 4 Issue: 1 Pages: 22-22

    • DOI

      10.1038/s41420-017-0007-4

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Gold Coating of Silver Nanoplates for Enhanced Dispersion Stability and Efficient Antimicrobial Activity against Intracellular Bacteria2018

    • Author(s)
      Ichimaru Hiroaki、Harada Ayaka、Yoshimoto Soichiro、Miyazawa Yuta、Mizoguchi Daigou、Kyaw Kaung、Ono Katsuhiko、Tsutsuki Hiroyasu、Sawa Tomohiro、Niidome Takuro
    • Journal Title

      Langmuir

      Volume: 34 Issue: 35 Pages: 10413-10418

    • DOI

      10.1021/acs.langmuir.8b00540

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reactive Persulfides from Salmonella Typhimurium Downregulate Autophagy-Mediated Innate Immunity in Macrophages by Inhibiting Electrophilic Signaling2018

    • Author(s)
      Khan Shahzada、Fujii Shigemoto、Matsunaga Tetsuro、Nishimura Akira、Ono Katsuhiko、Ida Tomoaki、Ahmed Khandaker Ahtesham、Okamoto Tatsuya、Tsutsuki Hiroyasu、Sawa Tomohiro、Akaike Takaaki
    • Journal Title

      Cell Chemical Biology

      Volume: 25 Issue: 11 Pages: 1403-1413

    • DOI

      10.1016/j.chembiol.2018.08.007

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reactive Cysteine Persulphides: Occurrence, Biosynthesis, Antioxidant Activity, Methodologies, and Bacterial Persulphide Signalling2018

    • Author(s)
      Sawa Tomohiro、Ono Katsuhiko、Tsutsuki Hiroyasu、Zhang Tianli、Ida Tomoaki、Nishida Motohiro、Akaike Takaaki
    • Journal Title

      Advances in Microbial Physiology

      Volume: 72 Pages: 1-28

    • DOI

      10.1016/bs.ampbs.2018.01.002

    • ISBN
      9780128144138
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 腸管出血性大腸菌毒素Subtilase cytotoxinの病原性発現におけるレドックス調節機構2020

    • Author(s)
      津々木 博康、張 田力、八尋 錦之助、小野 勝彦、伊豫田 淳、大西 真、赤池 孝章、澤 智裕
    • Organizer
      第93回日本細菌学会総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Subtilase cytotoxinによる宿主自然免疫抑制を介した病原性発現機構の解析2020

    • Author(s)
      津々木博康、張 田力、八尋 錦之助、小野 勝彦、赤池 孝章、澤 智裕
    • Organizer
      第19回分子予防環境医学研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 腸管出血性大腸菌毒素Subtilase cytotoxinが誘導する自然免疫抑制シグナルの解析2019

    • Author(s)
      津々木 博康、張 田力、八尋 錦之助、小野 勝彦、伊豫田 淳、勢戸 和子、大西 真、野田 公俊、赤池 孝章、澤 智裕
    • Organizer
      第92回日本細菌学会総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 腸管出血性大腸菌毒素SubABによる自然免疫抑制を介した病原性発現機構の解析2019

    • Author(s)
      津々木 博康、張 田力、小野 勝彦、八尋 錦之助、居原 秀、赤池 孝章、澤 智裕
    • Organizer
      第19回日本NO学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] マウス感染モデルを用いた腸管出血性大腸菌毒素Subtilase cytotoxinの機能解析2018

    • Author(s)
      津々木 博康、張 田力、八尋 錦之助、小野 勝彦、伊豫田 淳、勢戸 和子、大西 真、野田 公俊、赤池 孝章、澤 智裕
    • Organizer
      第91回日本細菌学会総会
    • Related Report
      2018 Research-status Report
  • [Presentation] Subtilase cytotoxin (SubAB)による宿主の自然免疫抑制機構の解析2018

    • Author(s)
      津々木 博康、張 田力、小野 勝彦、八尋 錦之助、伊豫田 淳、勢戸 和子、大西 真、赤池 孝章、野田 公俊、澤 智裕
    • Organizer
      第65回トキシンシンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] 腸管出血性大腸菌毒素Subtilase cytotoxinによる宿主自然免疫抑制機構の解明2018

    • Author(s)
      津々木 博康
    • Organizer
      第27回内毒素LPS研究会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 腸管出血性大腸菌毒素Subtilase cytotoxinによるNLRP3インフラマソームの活性化抑制機構2018

    • Author(s)
      津々木 博康、張 田力、八尋 錦之助、小野 勝彦、伊豫田 淳、勢戸 和子、大西 真、赤池 孝章、澤 智裕
    • Organizer
      第71回日本細菌学会九州支部総会
    • Related Report
      2018 Research-status Report
  • [Presentation] PROTECTION OF MICE AGAINST LETHAL ENDOTOXIN SHOCK BY NOVEL PERSULFIDE DONORS BASED ON N-ACETYL-L-CYSTEINE.2018

    • Author(s)
      Tsutsuki H., Zhang T., Ono K., Ihara H., Akaike T., Sawa T.
    • Organizer
      10th International Conference on the Biology, Chemistry and Therapeutic Applications of Nitric Oxide.
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] マウス感染モデルを用いた腸管出血性大腸菌毒素Subtilase cytotoxinの解析2018

    • Author(s)
      津々木博康、張 田力、八尋 錦之助、小野 勝彦、伊豫田 淳、勢戸 和子、大西 真、野田 公俊、赤池 孝章、澤 智裕
    • Organizer
      第17回分子予防環境医学研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Functional in vivo analysis of Subtilase cytotoxin by means of murine infection model2018

    • Author(s)
      津々木 博康、張 田力、八尋 錦之助、小野 勝彦、 伊豫田 淳、勢戸 和子、大西 真、野田 公俊、赤池 孝章、澤 智裕
    • Organizer
      第91回日本細菌学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] 腸管出血性大腸菌が産生する毒素Subtilase cytotoxinによるNLRP3インフラマソームの活性化抑制機構2017

    • Author(s)
      津々木 博康、張 田力、小野 勝彦、八尋 錦之助、伊豫田 淳、勢戸 和子、大西 真、野田 公俊、赤池 孝章、澤 智裕
    • Organizer
      第17回日本NO学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] 腸管出血性大腸菌毒素Subtilase cytotoxinによる小胞体ストレスを介したNLRP3インフラマソームの活性化抑制機構2017

    • Author(s)
      津々木 博康、張 田力、小野 勝彦、八尋 錦之助、伊豫田 淳、勢戸 和子、大西 真、野田 公俊、赤池 孝章、澤 智裕
    • Organizer
      第28回日本生体防御学会学術総会
    • Related Report
      2017 Research-status Report
  • [Presentation] Subtilase cytotoxin (SubAB)による小胞体ストレスを介したNLRP3インフラマソーム抑制機構の解析2017

    • Author(s)
      津々木博康、張 田力、小野 勝彦、八尋 錦之助、伊豫田 淳、勢戸 和子、大西 真、赤池 孝章、野田 公俊、澤 智裕
    • Organizer
      第64回トキシンシンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] マウス感染モデルを用いた腸管出血性大腸菌毒素Subtilase cytotoxinの機能解析2017

    • Author(s)
      津々木 博康、張 田力、八尋 錦之助、小野 勝彦、伊豫田 淳、勢戸 和子、大西 真、赤池 孝章、澤 智裕
    • Organizer
      第 70 回 日本細菌学会九州支部総会
    • Related Report
      2017 Research-status Report
  • [Book] 生体の科学(特集 タンパク質・核酸の分子修飾)2018

    • Author(s)
      津々木博康、澤 智裕、居原 秀
    • Total Pages
      2
    • Publisher
      公益財団法人金原一郎記念医学医療振興財団/医学書院
    • Related Report
      2018 Research-status Report
  • [Remarks]

    • URL

      http://kumadai-bisei.com/

    • Related Report
      2019 Annual Research Report

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Published: 2017-04-28   Modified: 2021-02-19  

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