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Importance for the existence of mobile-genetic elements in cytotoxic Anginosus group streptococci

Research Project

Project/Area Number 17K11615
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Morphological basic dentistry
Research InstitutionThe University of Tokushima

Principal Investigator

TABATA Atsushi  徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 講師 (10432767)

Co-Investigator(Kenkyū-buntansha) 友安 俊文  徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 准教授 (20323404)
長宗 秀明  徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 教授 (40189163)
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: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsアンギノーサス群レンサ球菌 / Streptococcus anginosus / β溶血 / ストレプトリジンS / 可動性遺伝因子 / プラスミド / Toxin-antitoxin system / ファージ / アンギノーサス群連鎖球菌 / 口腔細菌学
Outline of Final Research Achievements

Streptococcus anginosus subsp. anginosus is an opportunistic pathogen habitual in the oral cavity of human. Some of this species show cytotoxicity by producing the peptide-type toxin named streptolysin S. This study was conducted to investigate the presence of “mobile-genetic elements”, such as plasmids and bacteriophages, that may give the novel characteristics such as pathogenicity and/or antibiotic resistance, and to reveal the functions of these elements in the species. From the result of this study, the presence of plasmid and the induction of lysogenic phage was observed in the strain of S. anginosus subsp. anginosus, and their molecular characters were investigated based on the genetic information of these elements. The results shown in this study will provide the important information to discuss the real pathogenicity of human commensal S. anginosus subsp. anginosus strains and to enlighten the adequate oral health of human.

Academic Significance and Societal Importance of the Research Achievements

本研究により、ヒト口腔に常在するレンサ球菌であるStreptococcus anginosus subsp. anginosusの中に、可動性遺伝因子であるプラスミドや溶原ファージを保有する株が存在していることを明らかにした。細菌は、可動性遺伝子因子の獲得によって表現型が変化する可能性があり、ヒト口腔内に常在する日和見病原菌である本菌種において可動性遺伝因子の存在が確認されたことは、本菌の潜在的な病原性を議論する上で、また適切なオーラルケアを啓蒙する上でも、重要な知見であると考える。

Report

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

    (8 results)

All 2020 2019 2018 2017

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] β-Hemolytic Streptococcus anginosus subsp. anginosus causes streptolysin S-dependent cytotoxicity to human cell culture lines in vitro2019

    • Author(s)
      Atsushi Tabata, Takuya Yamada, Hiromi Ohtani, Kazuto Ohkura, Toshifumi Tomoyasu, Hideaki Nagamune
    • Journal Title

      Journal of Oral Microbiology

      Volume: 11 Issue: 1 Pages: 1609839-1609839

    • DOI

      10.1080/20002297.2019.1609839

    • NAID

      120006711364

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A novel plasmid, pSAA0430-08, from Streptococcus anginosus subsp. anginosus strain 0430-082018

    • Author(s)
      Atsushi Tabata, Douglas Deutsch, Seiya Otsuka, Kathleen Verratt, Toshifumi Tomoyasu, Hideaki Nagamune, Vincent A. Fischetti
    • Journal Title

      Plasmid

      Volume: 95 Pages: 16-27

    • DOI

      10.1016/j.plasmid.2018.01.002

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] アンギノーサス群レンサ球菌が産生するペプチド溶血毒素Streptolysin Sの特徴と細胞障害性2020

    • Author(s)
      田端厚之
    • Organizer
      第93回日本細菌学会総会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Streptococcus anginosus由来溶原性ファージの特性2019

    • Author(s)
      田端 厚之、友安 俊文、長宗 秀明
    • Organizer
      第92回日本細菌学会総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Streptococcus anginosus subsp. anginosus由来溶原性ファージの遺伝子的特性2019

    • Author(s)
      田端厚之、友安俊文、長宗秀明
    • Organizer
      第51回レンサ球菌研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Streptococcus anginosus subsp. anginosusが保有するプラスミドとその特徴2018

    • Author(s)
      田端厚之、大塚誠也、Douglas Deutsch、菊池賢、Vincent A. Fischetti、友安俊文、長宗秀明
    • Organizer
      第50回レンサ球菌研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] S. anginosus subsp. anginosusにおけるプラスミドの保有状況とそれらの特性2018

    • Author(s)
      田端 厚之、大塚 誠也、菊池 賢、友安 俊文、長宗 秀明
    • Organizer
      第91回日本細菌学会総会
    • Related Report
      2017 Research-status Report
  • [Presentation] Characterization of a novel plasmid discovered in a clinical isolate of Streptococcus anginosus subsp. anginosus2017

    • Author(s)
      Atsushi Tabata, Douglas Deutsch, Seiya Otsuka, Kathleen Verratt, Toshifumi Tomoyasu, Hideaki Nagamune, Vincent A. Fischetti
    • Organizer
      20th Lancefield International Symposium on Streptococci and Streptococcal Diseases
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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

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