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The correlation between the structure of PyGM75 and the function in exflagellation of microgamete

Research Project

Project/Area Number 15K08443
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Parasitology (including sanitary zoology)
Research InstitutionEhime University

Principal Investigator

Tachibana Mayumi  愛媛大学, プロテオサイエンスセンター, 助教 (00301325)

Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsマラリア / 雄性生殖体 / 鞭毛放出 / 雄性生殖母体 / プロテアーゼ / マラリア原虫 / 生殖母体 / ミクロガメート
Outline of Final Research Achievements

PyGM75 expressed on the male gamete surface of Plasmodium yoelii functions in exflagellation of microgametes. In this study, we investigated whether the molecular structure of protease-like domain and transmembrane domain of PyGM75 is involved in PyGM75 function. The transgenic parasite lacking the transmembrane region of pygm75 did not express the PyGM75 on the surface of male gametes. Furthermore, the infectivity to mosquito (the number of oocysts) was decreased compared to the wild type. These results suggested that the transmembrane domain of PyGM75 at C-terminal is important for the expression of PyGM75 on the male gamete and the ability to infect mosquitoes.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (6 results)

All 2018 2017 2016 2015

All Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Presentation] 新規伝搬阻止ワクチン候補PyMiGS抗体は、ミクロガメートの動きを止める2018

    • Author(s)
      橘 真由美, 鳥居 本美, 坪井 敬文, 石野 智子
    • Organizer
      日本寄生虫学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 雄特異的osmiophilic body タンパク質PyGM75の生殖体・接合体形成過程における役割の解析2017

    • Author(s)
      橘 真由美、 鳥居 本美、 須藤 萌、坪井 敬文、石野 智子
    • Organizer
      日本寄生虫学会
    • Place of Presentation
      北海道大学(北海道 札幌市)
    • Year and Date
      2017-05-28
    • Related Report
      2016 Research-status Report
  • [Presentation] PyGM75, a protein in osmiophilic bodies, is dispensable for egress of male gametocytes but important for exflagellation of microgametes2017

    • Author(s)
      Mayumi Tachibana, Motomi Torii, Takafumi Tsuboi, Tomoko Ishino
    • Organizer
      American society of tropical medicine & hygiene
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 新規伝搬阻止ワクチン候補PyGM75の抗原決定領域の探索2016

    • Author(s)
      橘 真由美, 鳥居 本美, 須藤 萌, 坪井 敬文, 石野 智子
    • Organizer
      日本寄生虫学会
    • Place of Presentation
      宮崎県宮崎市宮崎市民プラザ
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report
  • [Presentation] C-terminus region of male gamete surface protein, PyGM75 induce malaria transmission-blocking antibody2016

    • Author(s)
      Mayumi Tachibana, Moe Sudo, Takafumi Tsuboi, Motomi Torii , Tomoko Ishino
    • Organizer
      Molecular approach to malaria
    • Place of Presentation
      Mantra Beach Resort, lorne, Australia
    • Year and Date
      2016-02-21
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Screening for highly immunogenic region of PyGM75, a novel transmission-blocking vaccine candidate2015

    • Author(s)
      Mayumi Tachibana, Motomi Torii, Moe Sudo, Takafumi Tsuboi, Tomoko Ishino
    • Organizer
      American society of tropical medicine and hygiene
    • Place of Presentation
      Philadelphia Marriott Downtown, Philadelphia, USA
    • Year and Date
      2015-10-25
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2019-03-29  

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