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Replication of sCJD in vtro

Research Project

Project/Area Number 19K22600
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 52:General internal medicine and related fields
Research InstitutionNagasaki University

Principal Investigator

Nishida Noriyuki  長崎大学, 医歯薬学総合研究科(医学系), 教授 (40333520)

Co-Investigator(Kenkyū-buntansha) 石橋 大輔  長崎大学, 医歯薬学総合研究科(医学系), 准教授 (10432973)
Project Period (FY) 2019-06-28 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsプリオン病 / 液相分離 / アミロイド / プリオン / 神経疾患
Outline of Research at the Start

ヒトプリオン病の大半は孤発性で、正常型プリオン蛋白が感染性アミロイドのプリオンに構造変換することで発症する。プリオンを振盪する事で人工アミロイドを作成できるが、生理学的活性である感染性を失う。これを解決するために、タンパク質の液相分離に着目した。この現象はタンパク質が生理学的活性を持ったまま液相として振舞う現象である。液相分離を介してアミロイドを形成することにより、生理学的活性の感染性をもったアミロイドが作成可能ではないかと考えた。液相分離から感染性アミロイドの作成を目指し、自然発生型の孤発性プリオン病の謎を解く。

Outline of Final Research Achievements

The pathogen of prion diseases, “prion”, is mainly composed of abnormal prion protein (PrPSc). It is unknown how the first PrPSc is produced in the body. We have successfully induced liquid-liquid phase separation of prion protein (PrP) to form an amyloid gel (rPrP gel) in vitro by using used dextran and polyethylene glycol. This rPrP gel exhibited properties similar to those of PrPSc, including protease K resistance and binding to thioflavin T. Although it did not show conformational conversion of normal prion protein (seeding activity) in vitro or infectivity in animals, the liquid-liquid phase separation can be the first step in the emergence of PrPSc.

Academic Significance and Societal Importance of the Research Achievements

プリオン病の原因である異常型プリオンタンパクは、正常型プリオンタンパクの構造が異常化したものとされている。しかし、どのように異常化するのかは明らかになっていない。近年では様々なタンパク質が液相分離によって性質が変化し、凝集することが知られている。今回の研究では、プリオンタンパク(PrP)の液相分離を試験管内で再現することに成功した。また、このPrPは不溶性で凝集体を形成するなど、異常型プリオンタンパクと似た性質を有していた。これらの結果から、異常型プリオンタンパク形成には液相分離が関与していることが示唆され、プリオン病発症のメカニズムの一旦が明らかにされた。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (17 results)

All 2022 2021 2020 2019

All Journal Article (14 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 14 results,  Open Access: 11 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Synthesis and Characterization of Hydroxyethylamino- and Pyridyl-Substituted 2-Vinyl Chromone Derivatives for Detection of Cerebral Abnormal Prion Protein Deposits2022

    • Author(s)
      Nakaie Mari、Katayama Fumihiro、Nakagaki Takehiro、Kawasaki Masao、Yoshida Sakura、Toriba Akira、Ogawa Kazuma、Nishida Noriyuki、Nakayama Morio、Fuchigami Takeshi
    • Journal Title

      Chemical and Pharmaceutical Bulletin

      Volume: 70 Issue: 3 Pages: 211-219

    • DOI

      10.1248/cpb.c21-00902

    • NAID

      130008165517

    • ISSN
      0009-2363, 1347-5223
    • Year and Date
      2022-03-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lead Optimization of Influenza Virus RNA Polymerase Inhibitors Targeting PA-PB1 Interaction2021

    • Author(s)
      Mizuta Satoshi、Otaki Hiroki、Ishikawa Takeshi、Makau Juliann Nzembi、Yamaguchi Tomoko、Fujimoto Takuya、Takakura Nobuyuki、Sakauchi Nobuki、Kitamura Shuji、Nono Hikaru、Nishi Ryota、Tanaka Yoshimasa、Takeda Kohsuke、Nishida Noriyuki、Watanabe Ken
    • Journal Title

      Journal of Medicinal Chemistry

      Volume: 65 Issue: 1 Pages: 369-385

    • DOI

      10.1021/acs.jmedchem.1c01527

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of α-Synuclein Real-Time Quaking-Induced Conversion as a Diagnostic Method for α-Synucleinopathies2021

    • Author(s)
      Nakagaki Takehiro、Nishida Noriyuki、Satoh Katsuya
    • Journal Title

      Frontiers in Aging Neuroscience

      Volume: 13 Pages: 703984-703984

    • DOI

      10.3389/fnagi.2021.703984

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Formalin RT-QuIC assay detects prion-seeding activity in formalin-fixed brain samples from sporadic Creutzfeldt?Jakob disease patients2021

    • Author(s)
      Dong Thi-Thu-Trang、Akagi Akio、Nonaka Toshiaki、Nakagaki Takehiro、Mihara Ban、Takao Masaki、Iwasaki Yasushi、Nishida Noriyuki、Satoh Katsuya
    • Journal Title

      Neurobiology of Disease

      Volume: 159 Pages: 105504-105504

    • DOI

      10.1016/j.nbd.2021.105504

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dextran sulphate inhibits an association of prions with plasma membrane at the early phase of infection2021

    • Author(s)
      Takayuki Fuse, Takehiro Nakagaki, Takujiro Homma, Hiroya Tange, Naohiro Yamaguchi, Ryuichiro Atarashi, Daisuke Ishibashi, Noriyuki Nishida
    • Journal Title

      Neuroscience research

      Volume: S0168-0102(21) Pages: 00018-3

    • DOI

      10.1016/j.neures.2021.01.004

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Biomarkers and diagnostic guidelines for sporadic Creutzfeldt-Jakob disease2021

    • Author(s)
      Hermann Peter、Appleby Brian、Brandel Jean-Philippe、Caughey Byron、Collins Steven、Geschwind Michael D、Green Alison、Haik Stephane、Kovacs Gabor G、Ladogana Anna、Llorens Franc、Mead Simon、Nishida Noriyuki、Pal Suvankar、Parchi Piero、Pocchiari Maurizio、Satoh Katsuya、Zanusso Gianluigi、Zerr Inga
    • Journal Title

      The Lancet Neurology

      Volume: 20 Issue: 3 Pages: 235-246

    • DOI

      10.1016/s1474-4422(20)30477-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Liquid-liquid phase separation of full-length prion protein initiates conformational conversion in vitro2021

    • Author(s)
      Hiroya Tange, Daisuke Ishibashi, Takehiro Nakagaki, Yuzuru Taguchi, Yuji O Kamatari, Hiroki Ozawa, Noriyuki Nishida
    • Journal Title

      Journal of Biological Chemistry

      Volume: 296 Pages: 100367-100367

    • DOI

      10.1016/j.jbc.2021.100367

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Abnormal prion protein deposits with high seeding activities in the skeletal muscle, femoral nerve, and scalp of an autopsied case of sporadic Creutzfeldt?Jakob disease2021

    • Author(s)
      Honda Hiroyuki、Mori Shinichiro、Watanabe Akihiro、Sasagasako Naokazu、Sadashima Shoko、??ng Trang、Satoh Katsuya、Nishida Noriyuki、Iwaki Toru
    • Journal Title

      Neuropathology

      Volume: 41 Issue: 2 Pages: 152-158

    • DOI

      10.1111/neup.12717

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Generation, optimization and characterization of novel anti-prion compounds2020

    • Author(s)
      Andrea Altieri, Evgeny A Spiridonov, Semen I Sivtzev, Daisuke Ishibashi, Silvia Biggi, Noriyuki Nishida, Emiliano Biasini, Alexander V Kurkin
    • Journal Title

      Bioorganic & Medicinal Chemistry

      Volume: 28(21) Issue: 21 Pages: 115717-115717

    • DOI

      10.1016/j.bmc.2020.115717

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Feasibility studies of radioiodinated pyridyl benzofuran derivatives as potential SPECT imaging agents for prion deposits in the brain2020

    • Author(s)
      Fuchigami Takeshi、Kawasaki Masao、Watanabe Hiroyuki、Nakagaki Takehiro、Nishi Kodai、Sano Kazunori、Atarashi Ryuichiro、Nakaie Mari、Yoshida Sakura、Ono Masahiro、Nishida Noriyuki、Nakayama Morio
    • Journal Title

      Nuclear Medicine and Biology

      Volume: 90-91 Pages: 41-48

    • DOI

      10.1016/j.nucmedbio.2020.09.003

    • NAID

      120006988511

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Novel Compounds Identified by Structure-Based Prion Disease Drug Discovery Using In Silico Screening Delay the Progression of an Illness in Prion-Infected Mice2020

    • Author(s)
      Daisuke Ishibashi, Takeshi Ishikawa, Satoshi Mizuta, Hiroya Tange, Takehiro Nakagaki, Tsuyoshi Hamada, Noriyuki Nishida
    • Journal Title

      Neurotherapeutics

      Volume: 17(4) Issue: 4 Pages: 1836-1849

    • DOI

      10.1007/s13311-020-00903-9

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Administration of FK506 from Late Stage of Disease Prolongs Survival of Human Prion-Inoculated Mice2020

    • Author(s)
      Takehiro Nakagaki, Daisuke Ishibashi, Tsuyoshi Mori, Yukiko Miyazaki, Hanae Takatsuki, Hiroya Tange, Yuzuru Taguchi, Katsuya Satoh, Ryuichiro Atarashi, Noriyuki Nishida
    • Journal Title

      Neurotherapeutics

      Volume: 17(4) Issue: 4 Pages: 1850-1860

    • DOI

      10.1007/s13311-020-00870-1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Difference in driver gene expression patterns between perihilar and peripheral intrahepatic cholangiocarcinoma in an experimental mouse model2020

    • Author(s)
      Adachi Toshiyuki、Adachi Tomohiko、Nakagaki Takehiro、Ono Shinichiro、Hidaka Masaaki、Ito Shinichiro、Kanetaka Kengo、Takatsuki Mitsuhisa、Nishida Noriyuki、Eguchi Susumu
    • Journal Title

      Journal of Hepato-Biliary-Pancreatic Sciences

      Volume: 27 Issue: 8 Pages: 477-486

    • DOI

      10.1002/jhbp.772

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Discrimination between L-type and C-type bovine spongiform encephalopathy by the strain-specific reactions of real-time quaking-induced conversion2020

    • Author(s)
      Ubagai Kaori、Fukuda Shigeo、Mori Tsuyoshi、Takatsuki Hanae、Taguchi Yuzuru、Kageyama Soichi、Nishida Noriyuki、Atarashi Ryuichiro
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 526 Issue: 4 Pages: 1049-1053

    • DOI

      10.1016/j.bbrc.2020.03.183

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] プリオン蛋白の液相分離2019

    • Author(s)
      丹下 寛也
    • Organizer
      日本生化学会
    • Related Report
      2019 Research-status Report
  • [Presentation] プリオン蛋白の液相分離2019

    • Author(s)
      丹下 寛也
    • Organizer
      日本ウィルス学会九州支部総会
    • Related Report
      2019 Research-status Report
  • [Presentation] Liquid phase separation of prion protein2019

    • Author(s)
      丹下 寛也
    • Organizer
      Asia Pacific Prion Symposium 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-07-04   Modified: 2023-01-30  

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