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2016 Fiscal Year Annual Research Report

Development of the micro-flow ultra-rapid pulse label NMR apparatus and elucidation of the prion self-replication process.

Research Project

Project/Area Number 26291011
Research InstitutionGifu University

Principal Investigator

桑田 一夫  岐阜大学, 大学院連合創薬医療情報研究科, 教授 (00170142)

Co-Investigator(Kenkyū-buntansha) 鎌足 雄司  岐阜大学, 生命科学総合研究支援センター, 助教 (70342772)
Project Period (FY) 2014-04-01 – 2017-03-31
KeywordsNMR / 混合器 / パルスラベル / プリオン / 自己複製
Outline of Annual Research Achievements

高速混合をNMRマグネット内(NMRチューブ内)で行い、蛋白質の構造形成反応、あるいは凝集反応の超早期過程を原子分解能で観測する装置を作成した。そのため、28年度は2液(変性蛋白質溶液、及び巻き戻り溶液)をNMRチューブ内で混合し、連続フローで観測するための装置を作成した。廃液は、3本目のチューブから除去するため、連続観測が可能となった。27年度使用した既存のMICCS装置と異なり、In Cell NMR装置を改変し、磁化率を均一にした混合用のチューブを独自に作成したため、磁場の不均一性に起因すると思われるピークを取り除くことが可能となった。現在、プリオン蛋白質凝集過程の超早期観測を実施しており、今後の成果が期待されるところである。
また、プリオン蛋白質のフォールディング・凝集実験においては、CDストップト・フローを用い、プリオン蛋白質の凝集体(アミロイド)形成をプリオン蛋白質の天然構造が非競合的に抑制することを見出した(Honda & Kuwata, Sci. Rep. 2017)。天然構造と凝集体とのこのような相互作用は、プリオン感染の基盤をなすものであり、今後上記NMR装置を用い、プリオン感染現象のメカニズムを原子レベルで解明する計画である。

Research Progress Status

28年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

28年度が最終年度であるため、記入しない。

Causes of Carryover

28年度が最終年度であるため、記入しない。

Expenditure Plan for Carryover Budget

28年度が最終年度であるため、記入しない。

  • Research Products

    (18 results)

All 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 6 results,  Open Access: 6 results,  Acknowledgement Compliant: 3 results) Presentation (12 results) (of which Int'l Joint Research: 9 results,  Invited: 1 results)

  • [Journal Article] Evaluation of compound selectivity of aldo-keto reductases using differential scanning fluorimetry2017

    • Author(s)
      Kabir Aurangazeb, Satoshi Endo, Naoki Toyooka, Mayuko Fukuoka, Kazuo Kuwata, and Yuji O. Kamatari
    • Journal Title

      Journal of Biochemistry

      Volume: 161 (2) Pages: 215-222

    • DOI

      10.1093/jb/mvw063

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Instability of C154Y variant of aldo-keto reductase 10.1038/s41598-017-00710-x1C32017

    • Author(s)
      Satoshi Endo, Sayaka Takada, Ryo P. Honda, Kathrin Muller, Jochen H. Weishaupt, Peter M. Andersen, Albert C. Ludolph, Yuji O. Kamatari, Toshiyuki Matsunaga, Kazuo Kuwata, Ossama El-Kabbani, Akira Ikari
    • Journal Title

      Chemico-Biological Interactions

      Volume: S0009-2797(16) Pages: 30758-X

    • DOI

      10.1016/j.cbi.2016.12.018.

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The native state of prion protein (PrP) directly inhibits formation of PrP-amyloid fibrils in vitro2017

    • Author(s)
      Ryo P. Honda, Kazuo Kuwata
    • Journal Title

      Scientific Reports

      Volume: 7(1) Pages: 562

    • DOI

      10.1038/s41598-017-00710-x

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] A Novel Potent and Highly Specific Inhibitor against Influenza Viral N1-N9 Neuraminidases: Insight into Neuraminidase-Inhibitor Interactions.2016

    • Author(s)
      Nongluk Sriwilaijaroen, Sadagopan Magesh, Akihiro Imamura, Hiromune Ando, Hideharu Ishida, Miho Sakai, Erika Ishitsubo, Takanori Hori, Setsuko Moriya, Takeshi Ishikawa, Kazuo Kuwata, Takato Odagiri, Masato Tashiro, Hiroaki Hiramatsu, Kenji Tsukamoto, Taeko Miyagi, Hiroaki Tokiwa, Makoto Kiso, and Yasuo Suzuki
    • Journal Title

      Journal of medicinal chemistry

      Volume: 59(10) Pages: 4563-77

    • DOI

      10.1021/acs.jmedchem.5b01863

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Logical design of an anti-cancer agent targeting the Plant Homeodomain (PHD) in Pygopus22016

    • Author(s)
      Ferdausi Ali, Keiichi Yamaguchi, Mayuko Fukuoka, Abdelazim Elsayed Elhelaly, and Kazuo Kuwata
    • Journal Title

      Cancer Science

      Volume: 107(9) Pages: 1321-8

    • DOI

      10.1111/cas.12995.

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effects of ligand binding on the stability of aldo-keto reductases (AKR)2016

    • Author(s)
      Kabir Aurangazeb, Ryo P. Honda, Yuji O. Kamatari, Satoshi Endo, Mayuko Fukuoka, and Kazuo Kuwata
    • Journal Title

      Protein Science

      Volume: 25(12) Pages: 2132-41

    • DOI

      10.1002/pro.3036.

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] Real-Time In vitro Conversion of Prion Protein Detected by NMR(ポスター)2016

    • Author(s)
      Keiichi Yamaguchi, Yuji O Kamatari, Ryo P Honda, Kazuo Kuwata
    • Organizer
      XXVIIth International Conference on Magnetic Resonance in Biological Systems
    • Place of Presentation
      Kyoto International Conference Center
    • Year and Date
      2016-08-21 – 2016-08-26
    • Int'l Joint Research
  • [Presentation] プリオン病治療薬の開発2016

    • Author(s)
      桑田一夫
    • Organizer
      日本アミロイド―シス研究会学術集会
    • Place of Presentation
      KKRホテル東京
    • Year and Date
      2016-08-19 – 2016-08-19
  • [Presentation] Instability of C154Y variant of aldo-keto reductase 1C3 found in familial amyotrophic lateral sclerosis. (ポスター)2016

    • Author(s)
      Satoshi Endo, Sayaka Takada, Ryo Honda, Kathrin Muller, Yuji O. Kamatari, Toshiyuki Matsunaga, Kazuo Kuwata, Jochen Weishaupt, Akira Ikari
    • Organizer
      18th International Workshop on the Enzymology and Molecular Biology of Carbonyl Metabolism
    • Place of Presentation
      Costa Brava, Spain
    • Year and Date
      2016-07-12 – 2016-07-17
    • Int'l Joint Research
  • [Presentation] Continuous ultrasonic irradiation induces rapid aggregations of MoPrP depending on pH2016

    • Author(s)
      Kei-ichi Yamaguchi, Ryo Honda, Abdelazim Elsayed Elhelaly, Kazuo Kuwata
    • Organizer
      第16回日本蛋白質科学会年会
    • Place of Presentation
      福岡国際会議場
    • Year and Date
      2016-06-07 – 2016-06-09
  • [Presentation] Logical design of a therapeutic agent for prion diseases2016

    • Author(s)
      Kazuo Kuwata
    • Organizer
      PRION 2016 Tokyo
    • Place of Presentation
      一ツ橋ホール 東京
    • Year and Date
      2016-05-10 – 2016-05-13
    • Int'l Joint Research
  • [Presentation] Folding and misfolding pathways of prion protein2016

    • Author(s)
      Ryo P. Honda, Kei-ichi Yamaguchi, Kazuo Kuwata
    • Organizer
      PRION 2016 Tokyo
    • Place of Presentation
      一ツ橋ホール 東京
    • Year and Date
      2016-05-10 – 2016-05-13
    • Int'l Joint Research
  • [Presentation] A local conformation of natively disordered yeast prion monomer determines interspecies prion transmissibility2016

    • Author(s)
      Toshinobu shida, Yuji O. Kamatari, Kazuo Kuwata, Motomasa Tanaka
    • Organizer
      PRION 2016 Tokyo
    • Place of Presentation
      一ツ橋ホール 東京
    • Year and Date
      2016-05-10 – 2016-05-13
    • Int'l Joint Research
  • [Presentation] Calibaration of ultrasonic power and conformational analysis of MoPrP amyloid fibrils(ポスター)2016

    • Author(s)
      Kei-ichi Yamaguchi, Junji Hosokawa-Muto, Yuji O. Kamatari, Kazuo Kuwata
    • Organizer
      PRION 2016 Tokyo
    • Place of Presentation
      一ツ橋ホール 東京
    • Year and Date
      2016-05-10 – 2016-05-13
    • Int'l Joint Research
  • [Presentation] Discovery of anti-prion agents using PyMOL plugin-based logical drug design platform NAGARA(ポスター)2016

    • Author(s)
      Baio Ma, Kei-ichi Yamaguchi, Mayuko Fukuoka, Kazuo Kuwata
    • Organizer
      PRION 2016 Tokyo
    • Place of Presentation
      一ツ橋ホール 東京
    • Year and Date
      2016-05-10 – 2016-05-13
    • Int'l Joint Research
  • [Presentation] Classification of anti-prion compounds based on the binding properties to prion proteins(ポスター)2016

    • Author(s)
      Yuji O. Kamatari, Kazuo Kuwata
    • Organizer
      PRION 2016 Tokyo
    • Place of Presentation
      一ツ橋ホール 東京
    • Year and Date
      2016-05-10 – 2016-05-13
    • Int'l Joint Research
  • [Presentation] Latent structural variation in a yeast prion monomer determines strain phenotypes(ポスター)2016

    • Author(s)
      Motomasa Tanaka, Yumiko Ohhashi, Yoshiki Yamaguchi, Yuji O. Kamatari, Kazuo Kuwata
    • Organizer
      PRION 2016 Tokyo
    • Place of Presentation
      一ツ橋ホール 東京
    • Year and Date
      2016-05-10 – 2016-05-13
    • Int'l Joint Research
  • [Presentation] 統合創薬ソフトNAGARAの開発、論理的創薬機医学の創始、及び論理的 医療の実践2016

    • Author(s)
      桑田一夫
    • Organizer
      インシリコ創薬の展望セミナー
    • Place of Presentation
      臨床研究情報センター 神戸
    • Year and Date
      2016-04-15 – 2016-04-15
    • Invited

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Published: 2018-01-16  

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