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Induction of a dormant form of Trypanosoma cruzi by concanavalin A

Research Project

Project/Area Number 16K15268
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Parasitology (including sanitary zoology)
Research InstitutionIwaki Meisei University (2017-2018)
Juntendo University (2016)

Principal Investigator

Nara Takeshi  いわき明星大学, 薬学部, 教授 (40276473)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsクルーズトリパノソーマ / シャーガス病 / 休眠 / シスト形成 / トリパノソーマ / 分化誘導治療
Outline of Final Research Achievements

The flagellate protist, Trypanosoma cruzi, is a causative agent of Chagas disease. Here we demonstrate “a cyst-like form” of T. cruzi induced by treatment with concanavalin A (ConA). In the presence of ConA, the parasites became swollen along with enlargement of vacuole and the cellular organelles, like nuclei, mitochondria, and flagella, multiplied synchronously within the cyst wall. Finally, newly formed, motile organisms budded inside the cavity. Immunohistochemical and mass spectrometric analysis suggested the potential target of ConA is tubulin, a component of microtubule, and T. cruzi-specific cystein protease, cruzipain. Our data highlight its morphological flexibility of T. cruzi and provide hints on how the parasites persist in the course of chronic Chagas disease.

Academic Significance and Societal Importance of the Research Achievements

シャーガス病の治療において、急性期では著効を示すベンズニダゾールやニフルチモックスといった治療薬は慢性期では効果が低い。この事実は、急性期と慢性期でクルーズトリパノソーマの性質そのものが異なっていることを強く示唆し、抗結核薬が分裂休止菌に対しては効果がないことと極めて類似している。本研究によって、代謝活性および分裂能が著しく低下したクルーズトリパノソーマを誘導できることが明らかとなった。これは、シャーガス病の慢性期における病像を理解する上で極めて重要な発見である。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (13 results)

All 2019 2018 2017 2016

All Journal Article (11 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 10 results,  Open Access: 8 results,  Acknowledgement Compliant: 2 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Insights into the ubiquinol/dioxygen binding and proton relay pathways of the alternative oxidase2019

    • Author(s)
      Shiba Tomoo、Inaoka Daniel Ken、Takahashi Gen、Tsuge Chiaki、Kido Yasutoshi、Young Luke、Ueda Satoshi、Balogun Emmanuel Oluwadare、Nara Takeshi、Honma Teruki、Tanaka Akiko、Inoue Masayuki、Saimoto Hiroyuki、Harada Shigeharu、Moore Anthony L.、Kita Kiyoshi
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - Bioenergetics

      Volume: 1860 Issue: 5 Pages: 375-382

    • DOI

      10.1016/j.bbabio.2019.03.008

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Perlecan, a heparan sulfate proteoglycan, regulates systemic metabolism with dynamic changes in adipose tissue and skeletal muscle2018

    • Author(s)
      Yamashita Y, Nakada S, Yoshihara T, Nara T, Furuya N, Miida T, Hattori N, Arikawa-Hirasawa E
    • Journal Title

      Scientific Reports

      Volume: 8(1) Issue: 1 Pages: 7766-7766

    • DOI

      10.1038/s41598-018-25635-x

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Design and Synthesis of Potent Substrate-based Inhibitors of the Trypanosoma cruzi Dihydroorotate Dehydrogenase2017

    • Author(s)
      D. K. Inaoka, M. Iida, S. Hashimoto, T. Tabuchi,T. Kuranaga, E. O. Balogun, T. Honma, A. Tanaka, S. Harada, T. Nara, K. Kita, M. Inoue
    • Journal Title

      Bioorg. Med. Chem.

      Volume: 25 Issue: 4 Pages: 1465-1470

    • DOI

      10.1016/j.bmc.2017.01.009

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Characterization and diagnostic application of Trypanosoma cruzi trypomastigote excreted-secreted antigens shed in exosomes released from infected mammalian cells.2017

    • Author(s)
      Bautista-Lopez N, Ndao M, Camargo F, Nara T, Jardim A, Annoura T, Hardie D, Borchers C.
    • Journal Title

      J Clin Microbiol. 2017 55:744-758.

      Volume: 55 Issue: 3 Pages: 744-758

    • DOI

      10.1128/jcm.01649-16

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] シャーガス病:グローバル化・温暖化と感染症対策2017

    • Author(s)
      奈良武司
    • Journal Title

      小児科臨床.

      Volume: 70巻増刊号 Pages: 2267-2271

    • Related Report
      2017 Research-status Report
  • [Journal Article] Oct4 plays a crucial role in the maintenance of gefitinib-resistant lung cancer stem cells.2016

    • Author(s)
      Kobayashi I, Takahashi F, Nurwidya F, Nara T, Hashimoto M, Murakami A,
    • Journal Title

      Biochem Biophys Res Commun

      Volume: in press Issue: 1 Pages: 125-132

    • DOI

      10.1016/j.bbrc.2016.03.064

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Differential remodelling of peroxisome function underpins the environmental and metabolic adaptability of diplonemids and kinetoplastids.2016

    • Author(s)
      Morales J, Hashimoto M, Williams TA, Hirawake-Mogi H, Makiuchi T, Tsubouchi A, Kaga N, Taka H, Fujimura T, Koike M, Mita T, Bringaud F, Concepcion JL, Hashimoto T, Embley TM, Nara T.
    • Journal Title

      Proc R Soc B

      Volume: 283 Issue: 1830 Pages: 20160520-20160520

    • DOI

      10.1098/rspb.2016.0520

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Morpholino antisense oligo inhibits trans-splicing of pre-inositol 1,4,5-trisphosphate receptor mRNA of Trypanosoma cruzi and suppresses parasite growth and infectivity.2016

    • Author(s)
      Hashimoto M, Nara T, Mita T, Mikoshiba K.
    • Journal Title

      Parasitol Int.

      Volume: 65 Issue: 3 Pages: 175-179

    • DOI

      10.1016/j.parint.2015.12.001

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] The Open Form Inducer Approach for Structure-Based Drug Design2016

    • Author(s)
      D. K. Inaoka, M. Iida, T. Tabuchi, T. Honma, N. Lee, S. Hashimoto, S. Matsuoka, T. Kuranaga, K. Sato, T. Shiba, K. Sakamoto, E. O. Balogun, S. Suzuki, T. Nara, J. R. Rocha, C. A. Montanari, A. Tanaka, M. Inoue, K. Kita, S. Harada
    • Journal Title

      PLoS ONE

      Volume: 11 Issue: 11 Pages: e0167078-e0167078

    • DOI

      10.1371/journal.pone.0167078

    • NAID

      120006987593

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Haploinsufficiency of the folliculin gene leads to impaired functions of lung fibroblasts in patients with Birt-Hogg-Dube syndrome.2016

    • Author(s)
      Hoshika Y, Takahashi F, Togo S, Hashimoto M, Nara T, Kobayashi T, Nurwidya F, Kataoka H, Kurihara M, Kobayashi E, Ebana H, Kikkawa M, Ando K, Nishino K, Hino O, Takahashi K, Seyama K.
    • Journal Title

      Physiol Rep

      Volume: 4 Issue: 21

    • DOI

      10.14814/phy2.13025

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Inositol 1,4,5-trisphosphate receptor determines intracellular Ca2+ concentration in Trypanosoma cruzi throughout its life cycle2016

    • Author(s)
      Hashimoto M, Doi M, Kurebayashi N, Furukawa K, Hirawake-Mogi H, Ohmiya Y, Sakurai T, Mita T, Mikoshiba K, Nara T.
    • Journal Title

      FEBS Open Bio.

      Volume: 6(12) Issue: 12 Pages: 1178-1185

    • DOI

      10.1002/2211-5463.12126

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Book] ハリソン内科学第5版2017

    • Author(s)
      奈良武司監訳および訳、福井次矢、黒川清監修
    • Total Pages
      3132
    • Publisher
      メディカル・サイエンス・インターナショナル
    • Related Report
      2016 Research-status Report
  • [Patent(Industrial Property Rights)] トリパノソーマ関連疾患治療薬、トリパノソーマ原虫の感染阻止または殺虫方法、およびその利用2017

    • Inventor(s)
      奈良武司、御子柴克彦、橋本宗明
    • Industrial Property Rights Holder
      国立研究開発法人理化学研究所、学校法人順天堂
    • Industrial Property Rights Type
      特許
    • Filing Date
      2017
    • Acquisition Date
      2017
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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