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Study on Toxoplasma-derived brain manipulator which controls central nervous system of hosts

Research Project

Project/Area Number 15K15118
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Parasitology (including sanitary zoology)
Research InstitutionObihiro University of Agriculture and Veterinary Medicine

Principal Investigator

Nishikawa Yoshifumi  帯広畜産大学, 原虫病研究センター, 准教授 (90431395)

Co-Investigator(Renkei-kenkyūsha) MUROI Yoshikage  帯広畜産大学, 畜産学部, 准教授 (80552760)
SUZUKI Yutaka  東京大学, 新領域創成科学研究科, 教授 (40323646)
Research Collaborator MAHMOUD Motamed  
IHARA Fumiaki  
NISHIMURA Maki  
FURUOKA Hidefumi  
FEREIG Ragab  
UMEDA Kousuke  
Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords感染症 / 中枢神経系 / 免疫 / トキソプラズマ / トランスクリプトーム
Outline of Final Research Achievements

Toxoplasma gondii infects approximately one-third of the human population. T. gondii infection is a risk factor for developing mental diseases and nervous diseases. However, the mechanism(s) underlying the behavioral changes and onset of nervous diseases induced by T. gondii infection remains unclear. Therefore, this study aimed at elucidation of Toxoplasma-derived brain manipulator which controls host central nervous system. We identified TgGRAI as parasite molecule affecting host signal for brain function. TgGRAI activated NFkB signal. Furthermore,experiments of mouse behavior using TgGRAI-deficient parasite suggested that TgGRAI was involved in fear memory consolidation. Our results indicated the presence of parasite molecule for manipulation of host brain function.

Report

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

    (31 results)

All 2017 2016 2015 Other

All Int'l Joint Research (2 results) Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Acknowledgement Compliant: 3 results,  Open Access: 3 results) Presentation (15 results) (of which Int'l Joint Research: 3 results,  Invited: 3 results) Book (3 results) Remarks (7 results)

  • [Int'l Joint Research] Sohag University(エジプト)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Sohag University(エジプト)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Involvement of host defense mechanisms against Toxoplasma gondii infection in anhedonic and despair-like behaviors in mice2017

    • Author(s)
      Mahmoud ME, Fereig R, Nishikawa Y
    • Journal Title

      Infect Immun

      Volume: 85 Issue: 4

    • DOI

      10.1128/iai.00007-17

    • NAID

      120006391011

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Toxoplasma gondii Infection in Mice Impairs Long-Term Fear Memory Consolidation Through Dysfunction of the Cortex and Amygdala2016

    • Author(s)
      Ihara, F., Nishimura, M., Muroi, Y., Mahmoud, M.E., Yokoyama, N., Nagamune, K., Nishikawa, Y.
    • Journal Title

      Infect Immun.

      Volume: 84 Issue: 10 Pages: 2861-2871

    • DOI

      10.1128/iai.00217-16

    • NAID

      120006390959

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Changes in neurotransmitter levels and expression of immediate early genes in brain of mice infected with Neospora caninum.2016

    • Author(s)
      Ihara F, Nishimura M, Muroi Y, Furuoka H, Yokoyama N, Nishikawa Y
    • Journal Title

      Sci Rep.

      Volume: 6:23052 Issue: 1 Pages: 1-9

    • DOI

      10.1038/srep23052

    • NAID

      120006390936

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Induction of depression-related behaviors by reactivation of chronic Toxoplasma gondii infection in mice.2016

    • Author(s)
      Mahmoud ME, Ihara F, Fereig RM, Nishimura M, Nishikawa Y
    • Journal Title

      Behav Brain Res.

      Volume: 298 Pages: 125-133

    • DOI

      10.1016/j.bbr.2015.11.005

    • NAID

      120006402299

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Brain manipulation by intracellular parasite, Toxoplasma gondii2016

    • Author(s)
      Yoshifumi Nishikawa
    • Organizer
      The annual Joint International Tropical Medicine Meeting (JITMM2016)
    • Place of Presentation
      バンコク(タイ)
    • Year and Date
      2016-12-07
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] トキソプラズマ感染脳神経細胞を用いたケモカイン受容体CCR5依存的細胞応答に関するトランスクリプトーム解析2016

    • Author(s)
      小林薫、猪原史成、田中沙智、山岸潤也、鈴木穣、西川義文
    • Organizer
      第159回日本獣医学会学術集会
    • Place of Presentation
      日本大学(神奈川県・藤沢市)
    • Year and Date
      2016-09-06
    • Related Report
      2016 Annual Research Report
  • [Presentation] トキソプラズマ感染によるマウスの恐怖記憶固定の障害は大脳皮質および扁桃核における機能異常が引き起こす2016

    • Author(s)
      猪原史成、西村麻紀、室井善景、Mahmoud Motamed、横山直明、永宗喜三郎、西川義文
    • Organizer
      第159回日本獣医学会学術集会、寄生虫分科会若手ゼミナール
    • Place of Presentation
      日本大学(神奈川県・藤沢市)
    • Year and Date
      2016-09-06
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Toxoplasma gondii 由来Cyclophilin 18 が宿主免疫応答阻止に果たす機能の解明2016

    • Author(s)
      梅田剛佑、西川義文
    • Organizer
      第24回分子寄生虫学ワークショップ/第14回分子寄生虫・マラリア研究フォーラム合同大会
    • Place of Presentation
      帯広畜産大学(北海道・帯広市)
    • Year and Date
      2016-08-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] トキソプラズマ感染脳神経細胞を用いたケモカイン受容体CCR5 依存的細胞応答に関するトランスクリプトーム解析2016

    • Author(s)
      小林 薫、西川 義文
    • Organizer
      第24回分子寄生虫学ワークショップ/第14回分子寄生虫・マラリア研究フォーラム合同大会
    • Place of Presentation
      帯広畜産大学(北海道・帯広市)
    • Year and Date
      2016-08-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] Toxoplasma gondii デンスグラニュルプロテイン7(TgGRA7)による宿主細胞内シグナル伝達の調節に関する研究2016

    • Author(s)
      檜森結羽、西川義文
    • Organizer
      第24回分子寄生虫学ワークショップ/第14回分子寄生虫・マラリア研究フォーラム合同大会
    • Place of Presentation
      帯広畜産大学(北海道・帯広市)
    • Year and Date
      2016-08-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] トキソプラズマ感染によるマウスの恐怖記憶固定の障害は大脳皮質および扁桃体における機能異常が引き起こす2016

    • Author(s)
      猪原史成、西川義文
    • Organizer
      第24回分子寄生虫学ワークショップ/第14回分子寄生虫・マラリア研究フォーラム合同大会
    • Place of Presentation
      帯広畜産大学(北海道・帯広市)
    • Year and Date
      2016-08-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] トキソプラズマ慢性感染マウスにおける原虫再活性化によるうつ様症状の発現2016

    • Author(s)
      Mahmoud Motamed、猪原 史成、Fereig Ragab、西村 麻紀、西川 義文
    • Organizer
      第85回日本寄生虫学会大会
    • Place of Presentation
      宮崎市民プラザ(宮崎県・宮崎市)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Research-status Report
  • [Presentation] 脳を操る細胞内寄生体:トキソプラズマ2015

    • Author(s)
      西川 義文
    • Organizer
      分子生物学・生化学合同大会BMB2015
    • Place of Presentation
      神戸ポートピアホテル(兵庫県・神戸市)
    • Year and Date
      2015-12-01
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Toxoplasma gondii infection in mouse impairs long-term fear memory consolidation and downregulates Arc expression2015

    • Author(s)
      Fumiaki Ihara, Maki Nishimura, Motamed Elsayed Mahmoud, Yoshikage Muroi, Naoaki Yokoyama, Kisaburo Nagamune, Yoshifumi Nishikawa
    • Organizer
      2nd International Symposium "Matryoshka-type Evolution of Eukaryotic Cells"
    • Place of Presentation
      筑波大学・大学ホールA(茨城県・つくば市)
    • Year and Date
      2015-09-30
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Transcriptome and Histopathological Changes in Mouse Brain Infected with Neospora caninum2015

    • Author(s)
      西村麻紀、田中沙智、猪原史成、室井喜景、山岸潤也、古岡秀文、鈴木穣、西川義文
    • Organizer
      第158回日本獣医学会学術集会
    • Place of Presentation
      北里大学・獣医学部(青森県・十和田市)
    • Year and Date
      2015-09-07
    • Related Report
      2015 Research-status Report
  • [Presentation] トキソプラズマ感染によるマウスの脳内環境の破綻と恐怖記憶固定の障害2015

    • Author(s)
      猪原史成、西村麻紀、Motamed E Mahmoud、室井喜景、横山直明、西川義文
    • Organizer
      第4回感染症若手フォーラム
    • Place of Presentation
      「アテーナ海月」コンベンションホール(兵庫県・淡路市)
    • Year and Date
      2015-09-06
    • Related Report
      2015 Research-status Report
  • [Presentation] トキソプラズマ感染神経細胞を用いたTLR2 依存的防御反応に関するトランスクリプトーム解析2015

    • Author(s)
      猪原 史成、西川 義文
    • Organizer
      第23回分子寄生虫学ワークショップ/第13回分子寄生虫・マラリア研究フォーラム合同大会
    • Place of Presentation
      帯広畜産大学原虫病研究センター(北海道・帯広市)
    • Year and Date
      2015-08-30
    • Related Report
      2015 Research-status Report
  • [Presentation] マウスにおけるトキソプラズマ感染による「うつ」の中核症状の出現2015

    • Author(s)
      西川義文
    • Organizer
      第23回分子寄生虫学ワークショップ/第13回分子寄生虫・マラリア研究フォーラム合同大会
    • Place of Presentation
      帯広畜産大学原虫病研究センター(北海道・帯広市)
    • Year and Date
      2015-08-30
    • Related Report
      2015 Research-status Report
  • [Presentation] Toxoplasma gondii infection in mouse impairs long-term fear memory consolidation and downregulates Arc expression.2015

    • Author(s)
      Fumiaki Ihara, Maki Nishimura, Motamed E Mahmoud, Yoshikage Muroi, Naoaki Yokoyama, Yoshifumi Nishikawa
    • Organizer
      第25回 World Association for the Advancement of Veterinary Parasitology
    • Place of Presentation
      The Arena and Convention Centre(イギリス・リバプール)
    • Year and Date
      2015-08-17
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Book] 寄生虫病学2017

    • Author(s)
      西川義文
    • Publisher
      緑書房
    • Related Report
      2016 Annual Research Report
  • [Book] 獣医寄生虫学会誌(15巻2号)2016

    • Author(s)
      猪原史成、西川義文
    • Publisher
      日本獣医寄生虫学会
    • Related Report
      2016 Annual Research Report
  • [Book] 医学のあゆみ(259巻9号)2016

    • Author(s)
      西川義文、猪原史成
    • Publisher
      医歯薬出版株式会社
    • Related Report
      2016 Annual Research Report
  • [Remarks] 平成29年1月:論文発表

    • URL

      https://sites.google.com/site/nishihdlab/home/news

    • Related Report
      2016 Annual Research Report
  • [Remarks] 平成28年8月:プレスリリース

    • URL

      http://www.obihiro.ac.jp/press/28/18ronbun-nishikawa_28.pdf

    • Related Report
      2016 Annual Research Report
  • [Remarks] 岐阜大学大学院連合獣医学研究科猪原史成さんが日本獣医学会学術集会において「獣医寄生虫学奨励賞」を受賞

    • URL

      http://www.obihiro.ac.jp/topic/2016/inoharajyusyou_28.html

    • Related Report
      2016 Annual Research Report
  • [Remarks] 平成28年7月:論文発表

    • URL

      https://sites.google.com/site/nishihdlab/home/news

    • Related Report
      2016 Annual Research Report
  • [Remarks] 原虫病研究センター・感染免疫部門・生体防御学分野・西川義文研究室が研究成果を発表しました。

    • URL

      http://www.obihiro.ac.jp/~protozoa/2016gyoseki-topics.html

    • Related Report
      2015 Research-status Report
  • [Remarks] 平成28年3月:論文発表

    • URL

      https://sites.google.com/site/nishihdlab/home/news

    • Related Report
      2015 Research-status Report
  • [Remarks] 平成27年11月:論文発表

    • URL

      https://sites.google.com/site/nishihdlab/home/news

    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2018-03-22  

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