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Elucidation of the role of ferredoxin mutations in artemisinin resistance in malaria parasites

Research Project

Project/Area Number 20K06557
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 43030:Functional biochemistry-related
Research InstitutionYamaguchi University

Principal Investigator

Kimata Yoko  山口大学, 大学院創成科学研究科, 教授 (60255429)

Co-Investigator(Kenkyū-buntansha) 齊藤 貴士  北海道科学大学, 薬学部, 准教授 (00432914)
小崎 紳一  山口大学, 大学院創成科学研究科, 教授 (40280581)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsマラリア原虫 / 薬剤耐性 / フェレドキシン / 薬剤耐性メカニズム / アルテミシニン
Outline of Research at the Start

近年マラリア原虫の特効薬であるアルテミシニンへの耐性株が出現し、大きな問題となっている。マラリア原虫が持つフェレドキシンという電子伝達タンパク質の97番目アミノ酸の変異(Asp から Tyr)が、この耐性と強く関連することが明らかとなった。本研究では、このフェレドキシンの変異がアルテミシニン耐性をもたらす仕組みの解明を目指し、このフェレドキシン変異体を調製してその機能変化を多面的且つ定量的手法により精密に解析する。それらの結果を総合してマラリア原虫フェレドキシン変異によるアルテミシニン耐性メカニズムを提唱し、アルテミシニン耐性を阻止する解決策の創出とマラリア根絶に貢献する

Outline of Final Research Achievements

Malaria is caused by malaria parasites that infect the body through mosquitoes. Artemisinin is a special drug for this purpose, but in recent years malaria parasites that are resistant to this drug have emerged, posing a serious problem. Mutations in an electron transport protein called ferredoxin, which malaria parasites have, have been reported to be one of the causes of resistance. In this study, we prepared this mutant ferredoxin protein and found that there were significant changes in protein functions such as the affinity and electron transfer rate of ferredoxin with the enzymes that donates and/or accepts electrons (FNR). Based on these results, we proposed a mechanism in which mutations in ferredoxin cause drug resistance by affecting various oxidative stress responses controlled by ferredoxin and related enzymes.

Academic Significance and Societal Importance of the Research Achievements

マラリア原虫の生化学的研究は、設備や培養材料の制約から限られており、アルテミシニンの標的や作用機序についてもごく少数例の報告しかない。本研究では、代表者らがこれまで蓄積してきた植物のフェレドキシンの生化学、物理化学、構造生物学的な知見や手法を用いて、マラリア原虫フェレドキシンが関与するアルテミシニン耐性の仕組みを提唱した。この仕組みの解明は、アルテミシニン耐性原虫の出現や拡散を抑制し、マラリア根絶を進めるための重要な情報を提供できると考える。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (11 results)

All 2023 2022 2021 2020

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 1 results) Presentation (4 results)

  • [Journal Article] Inter-domain interaction of ferredoxin-NADP+ reductase important for the negative cooperativity by ferredoxin and NADP(H)2023

    • Author(s)
      Kimata-Ariga Yoko、Shinkoda Rina、Abe Ryuya
    • Journal Title

      The Journal of Biochemistry

      Volume: 174 Issue: 4 Pages: 327-334

    • DOI

      10.1093/jb/mvad046

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of Histidine 78 of leaf ferredoxin in the interaction with ferredoxin-NADP+ reductase: regulation of pH dependency and negative cooperativity with NADP(H)2022

    • Author(s)
      Kimata-Ariga Yoko、Fukuta Karen、Miyata Masayuki
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 86 Issue: 5 Pages: 618-623

    • DOI

      10.1093/bbb/zbac022

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Molecular mechanism of negative cooperativity of ferredoxin-NADP+ reductase by ferredoxin and NADP(H): role of the ion pair of ferredoxin Arg40 of and FNR Glu1542022

    • Author(s)
      Kimata-Ariga Yoko、Nishimizu Yoshiro、Shinkoda Rina
    • Journal Title

      The Journal of Biochemistry

      Volume: 172 Issue: 6 Pages: 377-383

    • DOI

      10.1093/jb/mvac075

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of Artemisinin on the Redox System of NADPH/FNR/Ferredoxin from Malaria Parasites2022

    • Author(s)
      Kimata-Ariga Yoko、Morihisa Rena
    • Journal Title

      Antioxidants

      Volume: 11 Issue: 2 Pages: 273-273

    • DOI

      10.3390/antiox11020273

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Functional analyses of Plasmodium ferredoxin Asp97Tyr mutant related to artemisinin resistance of human malaria parasites2021

    • Author(s)
      Kimata-Ariga Yoko、Morihisa Rena
    • Journal Title

      The Journal of Biochemistry

      Volume: 170 Issue: 4 Pages: 521-529

    • DOI

      10.1093/jb/mvab070

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Molecular mechanism of negative cooperativity of ferredoxin-NADP+ reductase by ferredoxin and NADP(H): involvement of a salt bridge between Asp60 of ferredoxin and Lys33 of FNR2021

    • Author(s)
      Chikuma Yutaro、Miyata Masayuki、Lee Young-Ho、Hase Toshiharu、Kimata-Ariga Yoko
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 85 Issue: 4 Pages: 860-865

    • DOI

      10.1093/bbb/zbaa102

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] C-terminal aromatic residue of Plasmodium ferredoxin important for the interaction with ferredoxin: NADP(H) oxidoreductase: possible involvement for artemisinin resistance of human malaria parasites2020

    • Author(s)
      Kimata-Ariga Yoko、Sakamoto Asako、Kamatani Miho、Saitoh Takashi、Hase Toshiharu
    • Journal Title

      The Journal of Biochemistry

      Volume: 168 Issue: 4 Pages: 427-434

    • DOI

      10.1093/jb/mvaa060

    • NAID

      40022393407

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] フェレドキシン:NADP+還元酵素のドメイン間相互作用(Asp104-Arg178イオン結合)が、NADPHによるアロステリックなフェレドキシンとの親和性抑制に重要である Interdomain interaction of ferredoxin:NADP+ reductase (Asp104-Arg178 ionic bond) important for the allosteric suppression of the affinity with ferredoxin by NADP(H)2023

    • Author(s)
      木股洋子、新小田里奈、安部龍哉
    • Organizer
      第96回日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] フェレドキシン:NADP+還元酵素とフェレドキシンとの親和性を、NADP(H)がアロステリックに抑制する分子メカニズム Molecular mechanism by which NADP (H) allosterically suppresses the affinity between ferredoxin:NADP+reductase and ferredoxin2022

    • Author(s)
      木股洋子、宮田昌幸、福田カレン、新小田里奈、西水禎朗
    • Organizer
      第95回日本生化学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] アルテミシニン耐性に関与するマラリア原虫フェレドキシン変異体の機能解析2021

    • Author(s)
      木股洋子、森久鈴菜、齊藤貴士、新小田里奈、西水禎朗
    • Organizer
      第94回日本生化学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] マラリア原虫フェレドキシンとフェレドキシン-NADP(H)酸化還元酵素との結合に重要な芳香族アミノ酸残基間相互作用:アルテミシニン耐性との関連性2020

    • Author(s)
      木股洋子、坂本麻沙子、鎌谷美穂、森久鈴菜、齊藤貴士
    • Organizer
      第93回日本生化学会大会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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