• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Molecular dissection of the nuclear division according to the developmental stages in Plasmodium

Research Project

Project/Area Number 18K07097
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49040:Parasitology-related
Research InstitutionNational Institute of Infectious Diseases

Principal Investigator

Annoura Takeshi  国立感染症研究所, 寄生動物部, 主任研究官 (90407239)

Co-Investigator(Kenkyū-buntansha) 佐々木 年則  国立感染症研究所, 昆虫医科学部, 主任研究官 (10300930)
川合 覚  獨協医科大学, 医学部, 教授 (70275733)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsマラリア / 核の制御 / 休眠 / 増殖 / 電子顕微鏡 / 肝内型原虫 / 増殖と休眠 / 増殖分子メカニズム / 休眠期 / 核
Outline of Final Research Achievements

Plasmodium is a unicellular eukaryotic parasite that is the causative agent of malaria, which is transmitted by Anopheles mosquito. The Plasmodium liver-stage parasite represents the first intracellular infectious step in human following a mosquito bite, and this asymptomatic stage forms several thousands of merozoites with tremendous multinuclear hyper-proliferation. Some Plasmodium species generate a dormant uninucleate parasite during liver-stage development termed the hypnozoite which persists for months or even years following an infection. The developmental decision-making that controls dormancy (or promote proliferation) in Plasmodium liver-stage is made before nuclear segregation. However, the detailed molecular mechanism(s) that regulates proliferation is poorly understood. In this study, we used focused-ion-beam-milling combined with scanning-electron-microscopy to revel the 3D architecture during nuclear segregation in several developmental stages in Plasmodium.

Academic Significance and Societal Importance of the Research Achievements

マラリアは、結核・エイズなどと共に世界中に蔓延する感染症の一つであり、赤道付近の熱帯・亜熱帯地域などを中心に広く流行し、様々な対策がなされているが制圧には至っていない。マラリアの病原体であるマラリア原虫はハマダラカによって媒介され、ヒト体内において肝細胞内(肝内型)と赤血球内(赤内型)に寄生する疾患であり、肝内型原虫は休眠期を有しており根治が難しくマラリア対策を困難にする。本研究では、この肝内型原虫の増殖・休眠の分子制御を明らかにするため、核の制御に着目し分子細胞生物学、逆遺伝学、電子顕微鏡学などのアプローチにより分子基盤の解明を試みることで、新たなマラリア対策に付与する研究を展開した。

Report

(3 results)
  • 2020 Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (11 results)

All 2020 2019 2018

All Journal Article (4 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results)

  • [Journal Article] Development of an effective alternative model for in vivo hypnozoite-induced relapse infection: A Japanese macaque (Macaca fuscata) model experimentally infected with Plasmodium cynomolgi.2020

    • Author(s)
      1).Kawai S, Annoura T, Araki T, Shiogama Y, Soma S, Takano JI, Sato MO, Kaneko O, Yasutomi Y, Chigusa Y.
    • Journal Title

      Parasitol Int.

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Three-dimensional electron microscopy analysis reveals endopolygeny-like nuclear architecture segregation in Plasmodium oocyst development.2020

    • Author(s)
      2).Araki T, Kawai S, Kakuta S, Kobayashi H, Umeki Y, Saito-Nakano Y, Sasaki T, Nagamune K, Yasutomi Y, Nozaki T, Franke-Fayard B, Khan SM, Hisaeda H, Annoura T.
    • Journal Title

      Parasitol Int.

      Volume: -

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Prevalence of human and non-human primate Plasmodium parasites in anopheline mosquitoes: A cross-sectional epidemiological study in southern Vietnam2019

    • Author(s)
      Vu Duc Chinh , Gaku Masuda , Vu Viet Hung , Hidekazu Takagi , Satoru Kawai , Takeshi Annoura , Yoshimasa Maeno
    • Journal Title

      Trop Med Health.

      Volume: 47.9 Issue: 1 Pages: 1-6

    • DOI

      10.1186/s41182-019-0139-8

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Plasmodium falciparum subtilisin-like ookinete protein SOPT plays an important and conserved role during ookinete infection of the Anopheles stephensi midgut2018

    • Author(s)
      Armistead Jennifer S.、Jennison Charlie、O'Neill Matthew T.、Lopaticki Sash、Liehl Peter、Hanson Kirsten K.、Annoura Takeshi、Rajasekaran Pravin、Erickson Sara M.、Tonkin Christopher J.、Khan Shahid M.、Mota Maria M.、Boddey Justin A.
    • Journal Title

      Molecular Microbiology

      Volume: 109 Issue: 4 Pages: 458-473

    • DOI

      10.1111/mmi.13993

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] A novel histone methylase SET-hyp play a critical role in Plasmodium liver-stage development2020

    • Author(s)
      Tamasa Araki, Satoru Kawai, Masaki Kikuchi, Takashi Umehara, Yuko Umeki, Yumiko Saito-Nakano, Blandine Franke-Fayard, Shahid M. Khan, Chris J. Janse, Tomoyoshi Nozaki, Hajime Hisaeda, Takeshi Annoura
    • Organizer
      United States-Japan Cooperative Medical Science Program The 50th Joint Conference on Parasitic Diseases;
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 「SET-TAによる肝内型マラリア原虫の増殖制御機構の解明2019

    • Author(s)
      1).荒木 球沙、川合 覚、菊地 正樹、梅原 崇史、永宗 喜三郎、野崎 智義、久枝 一、案浦 健、
    • Organizer
      第27回 分子寄生虫学ワークショップ/第17回 分子寄生虫・マラリア研究フォーラム合同大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 霊長類マラリアを用いた原虫の休眠・増殖・病態メカニズムの解明2019

    • Author(s)
      2).案浦 健、 荒木 球沙、川合 覚、前野 芳正、Vu Duc Chinh、久枝 一、
    • Organizer
      第27回 分子寄生虫学ワークショップ/第17回 分子寄生虫・マラリア研究フォーラム合同大会;
    • Related Report
      2019 Research-status Report
  • [Presentation] ヒストン制御機構に着目した新規マラリア薬開発と分子メカニズムの解明2019

    • Author(s)
      3).梅木優子、荒木球沙、川合覚、菊地正樹、梅原崇史、中野由美子、久枝一、〇案浦健 (発表者)
    • Organizer
      第88回日本寄生虫学会大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Insights into the molecular machinery involved in regulating liver-stage and mosquito-stage proliferation in Plasmodium2018

    • Author(s)
      1).Takeshi Annoura, Tamasa Araki, Satoru Kawai, Hirotaka Kobayashi, Michiyo Kataoka, Soichiro Kakuta, Shahid M. Khan , Yasuhiro Yasutomi, Tomoyoshi Nozaki, Hajime Hisaeda
    • Organizer
      タイ国立霊長類センター チュラーロンコーン大学 公式オープニングセレモニー及びシンポジウム
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Insights into the molecular machinery involved in regulating Plasmodium liver-stage proliferation2018

    • Author(s)
      2).Takeshi Annoura, Tamasa Araki, Satoru Kawai, Hirotaka Kobayashi, Michiyo Kataoka, Soichiro Kakuta, Shahid M. Khan , Tomoyoshi Nozaki, Hajime Hisaeda
    • Organizer
      第14回国際寄生虫学会 (ICOPA 2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 「核制御を中心としたマラリア原虫の増殖分子メカニズムの解明2018

    • Author(s)
      4).案浦健、荒木球沙、川合覚、小林宏尚、片岡紀代、角田宗一郎、Heussler VT、野崎智義、久枝一
    • Organizer
      第26回 分子寄生虫学ワークショップ/第16回 分子寄生虫・マラリア研究フォーラム合同大会
    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2025-12-26  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi