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Analysis of evasion mechanisms of neutrophil killing by V. vulnificus.

Research Project

Project/Area Number 18H02350
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionKitasato University

Principal Investigator

Kashimoto Takashige  北里大学, 獣医学部, 准教授 (50327459)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥13,000,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥3,000,000)
Fiscal Year 2021: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2018: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywordsビブリオ / バルニフィカス / 敗血症 / 好中球 / 新規治療法 / リン脂質 / 感染モデル / 新規病原遺伝子同定法 / 人食いバクテリア / 好中球逃避機構 / 網羅的同定 / 人喰いバクテリア
Outline of Final Research Achievements

We have developed the novel method named ISLAP that comprehensively identifies the V. vulnificus genes required to evade neutrophils. Among 40 identified genes, VV1_0055 and VV1_0056 were involved in a protein transport system from inner membrane to outer membrane in periplasm. 0055 binds Enoyl-[acyl-carrier-protein] reductase [NADH] 2, which is the enzyme for Acyl ACP synthesis. Interestingly, 0058, 0059, 0060 and 0061 were found on the same pathway for Acyl ACP. Thus, the acylated proteins modified by 0055 and 0056 are involved in ability of evading neutrophils.

Academic Significance and Societal Importance of the Research Achievements

V. vulnificusは、感染者を短時間内に死に至らしめるため、人食いバクテリアと呼ばれ恐れられている。しかし、どのような機構で短時間内における感染者体内での増殖を可能にしているかは明らかでない。本研究成果により、V. vulnificusが生体内で好中球から逃避し、増殖できる能力を証明できたと共に、それには菌体外膜に局在するタンパク質のアシル化が重要である可能性を示すことができた。本研究成果を発展させ、好中球逃避機構を担うアシル化修飾タンパク質を同定し、その働きを明らかにすることにより、人食いバクテリアの抗生物質に頼らない、新たな治療法が開発可能かもしれない。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (14 results)

All 2022 2020 2019 2018 Other

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

  • [Journal Article] Increased Vascular Permeability Due to Spread and Invasion of Vibrio vulnificus in the Wound Infection Exacerbates Potentially Fatal Necrotizing Disease2022

    • Author(s)
      Yamazaki Kohei、Kashimoto Takashige、Kado Takehiro、Yoshioka Kazuki、Ueno Shunji
    • Journal Title

      Frontiers in Microbiology

      Volume: 13 Pages: 00-00

    • DOI

      10.3389/fmicb.2022.849600

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Chemotactic invasion in deep soft tissue by Vibrio vulnificus is essential for the progression of necrotic lesions2020

    • Author(s)
      Yamazaki Kohei、Kashimoto Takashige、Kado Takehiro、Akeda Yukihiro、Yoshioka Kazuki、Kodama Toshio、Yamamoto Mai、Okamura Masashi、Kakuda Tsutomu、Ueno Shunji
    • Journal Title

      Virulence

      Volume: 11 Issue: 1 Pages: 839-847

    • DOI

      10.1080/21505594.2020.1782707

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vibiro vulnificus hemolysin associates with gangliosides.2020

    • Author(s)
      Kashimoto T, Sugiyama H, Kawamidori K, Yamazaki K, Kado T, Matsuda K, Kodama T, Mukai T, Ueno S.
    • Journal Title

      BMC microbiology

      Volume: 30 Issue: 1 Pages: 1-9

    • DOI

      10.1186/s12866-020-01755-1

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Accurate prediction of anti‐phagocytic activity of Vibrio vulnificus by measurement of bacterial adherence to hydrocarbons. Prediction of Anti‐Phagocytic Activity2019

    • Author(s)
      Takehiro Kado, Takashige Kashimoto*, Kohei Yamazaki, Kaho Matsuda, and Shunji Ueno
    • Journal Title

      APMIS.

      Volume: 127 Issue: 2 Pages: 80-86

    • DOI

      10.1111/apm.12910

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of in vivo Essential Genes of Vibrio vulnificus for Establishment of Wound Infection by Signature-Tagged Mutagenesis2019

    • Author(s)
      Kohei Yamazaki, Takashige Kashimoto*, Mio Morita, Takehiro Kado, Kaho Matsuda, Moeko Yamasaki, and Shunji Ueno
    • Journal Title

      Front Microbiol.

      Volume: 10 Pages: 1-12

    • DOI

      10.3389/fmicb.2019.00123

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 壊死性軟部組織感染症において壊死した軟部組織は感染菌の生体内リザーバーとして機能する2019

    • Author(s)
      Takashige KASHIMOTO, Kohei YAMAZAKI, Shunji UENO.
    • Organizer
      日本細菌学会第93回総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Vibrio vulnificusの生体内における増殖・拡散に必須な因子の探索2019

    • Author(s)
      大谷 豪、柏本 孝茂、山崎 浩平、松田 果穂、上野 俊治
    • Organizer
      第162回日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 軟部組織壊死感染症における壊死性筋膜炎発症の意義2019

    • Author(s)
      柏本 孝茂、山﨑 浩平、門 武宏、松田 果穂、上野 俊治
    • Organizer
      第32回北里大学バイオサイエンスフォーラム
    • Related Report
      2019 Annual Research Report
  • [Presentation] 壊死筋肉組織はNSTI起因菌の生体内リザーバーとなる2019

    • Author(s)
      柏本 孝茂、山﨑 浩平、上野 俊治
    • Organizer
      令和元年度獣医学術東北地区学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Accurate prediction of anti‐phagocytic activity of Vibrio vulnificus by measurement of bacterial adherence to hydrocarbons.2019

    • Author(s)
      Takashige Kashimoto, Takehiro Kado, Kohei Yamazaki, and Shunji Ueno
    • Organizer
      8th Congress of European Microbiologists
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Knock out of a putative transporter system in Vibrio vulnificus reduces lethality of mice.2018

    • Author(s)
      Takehiro Kado, Takashige Kashimoto, Kohei Yamazaki, Yukihiro Akeda, Toshio Kodama, and Shunji Ueno
    • Organizer
      The 17th Awaji International Forum on Infection and Immunity
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 北里大学獣医公衆衛生学ホームページ

    • URL

      http://www.vmas.kitasato-u.ac.jp/publichealth/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 北里大学獣医公衆衛生学研究室

    • URL

      http://www2.vmas.kitasato-u.ac.jp/publichealth/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 北里大学獣医公衆衛生学研究室 Publications

    • URL

      http://www2.vmas.kitasato-u.ac.jp/publichealth/

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report

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Published: 2018-04-23   Modified: 2023-01-30  

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