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2017 Fiscal Year Annual Research Report

脳イメージングを基軸としたタンパク質老化モデルの治療評価系の開発

Planned Research

Project AreaPrevention of brain protein aging and dementia
Project/Area Number 26117008
Research InstitutionNational Institutes for Quantum and Radiological Science and Technology

Principal Investigator

佐原 成彦  国立研究開発法人量子科学技術研究開発機構, 放射線医学総合研究所 脳機能イメージング研究部, チームリーダー(定常) (40261185)

Co-Investigator(Kenkyū-buntansha) 山口 芳樹  国立研究開発法人理化学研究所, 主任研究員研究室等, チームリーダー (90323451)
Project Period (FY) 2014-07-10 – 2019-03-31
Keywords生体イメージング / タウオパチー / タンパク質老化
Outline of Annual Research Achievements

本研究班では、脳タンパク質老化の進展メカニズムの解明と精神・神経変性疾患の治療を最終目標として、生体脳イメージング技術を駆使した治療評価系の開発を目指している。本年度は、放医研に開発されたタウPETリガンドPBB3の結合特性評価と、タウオパチーマウスモデルrTg4510マウスのマルチモーダルイメージング技術による病態評価を死後脳の病理像との相関と合わせて行った。これらの成果について複数の論文発表を行なった。
1)高度なαシヌクレイン病変を有するごく限られた症例において[11C]PBB3-PETがαシヌクレイン病態を検出しうるこを病理標本を用いた研究で明らかにした(Koga et al. 2017 Movement Disorder)。2)PBB3リガンドはMAO-A/MAO-B阻害剤による競合阻害が認められなかったことからMAOはPBB3のoff-targetとなる可能性か低いことが証明された (Ni et al. 2018 J. Nuclear Medicine)。3)タウPETリガンド結合部位の同定:クライオ電顕による分子構造解析データをもとにPBB3のタウ線維上での結合部位を明らかにした(Goedert et al. 2018 Frontiers in Neurology)。4)タウオパチーマウスのマルチモーダルイメージング技術による病態評価系を確立した(Ishikawa et al. 2018 J. Alzheimer’s Disease)。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

今年度は分担研究者、連休研究者と共に複数の論文を国際誌に掲載することができた。順調に進んでいる。

Strategy for Future Research Activity

脳タンパク質老化を標的としたバイオマーカーの開発、神経変性メカニズムの解明を目指した研究、霊長類モデルの病態解析、治療開発研究を、生化学、細胞生物学、病理学、生体イメージング、タンパク質構造生物学的手法を用いて進めて行く。

  • Research Products

    (18 results)

All 2018 2017

All Journal Article (13 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 13 results,  Open Access: 8 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results)

  • [Journal Article] In Vivo Visualization of Tau Accumulation, Microglial Activation, and Brain Atrophy in a Mouse Model of Tauopathy rTg45102018

    • Author(s)
      Ishikawa Ai、Tokunaga Masaki、Maeda Jun、Minamihisamatsu Takeharu、Shimojo Masafumi、Takuwa Hiroyuki、Ono Maiko、Ni Ruiqing、Hirano Shigeki、Kuwabara Satoshi、Ji Bin、Zhang Ming-Rong、Aoki Ichio、Suhara Tetsuya、Higuchi Makoto、Sahara Naruhiko
    • Journal Title

      Journal of Alzheimer's Disease

      Volume: 61 Pages: 1037~1052

    • DOI

      10.3233/JAD-170509

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Microglial activation during pathogenesis of tauopathy in rTg4510 mice: implications for the early diagnosis of tauopathy2018

    • Author(s)
      Sahara N*, Maeda J, Ishikawa I, Tokunaga M, Suhara T, Higuchi M
    • Journal Title

      Journal of Alzheimer's Disease

      Volume: in press Pages: -

    • Peer Reviewed
  • [Journal Article] Comparative in-vitro quantification of pathological tau deposits and their association with neurodegeneration in tauopathy mouse models2018

    • Author(s)
      Ni R, Ji B, Ono M, Sahara N, Zhang M-R, Aoki I, Nordberg A, Suhara T, Higuchi M
    • Journal Title

      J. Nuclear Medicine

      Volume: 117 Pages: -

    • DOI

      10.2967/jnumed.117.201632

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tau filaments and development of positron emission tomography (PET) tracers2018

    • Author(s)
      Goedert M*, Yamaguchi Y, Mishra S, Higuchi M, Sahara N
    • Journal Title

      Frontiers in Neurology

      Volume: 9 Pages: 70

    • DOI

      10.3389/fneur.2018.0070

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Tau fibril formation in cultured cells compatible with a mouse model of tauopathy2018

    • Author(s)
      Matsumoto G*, Matsumoto K, Kimura T, Suhara T, Higuchi M, Sahara N*, Mori N
    • Journal Title

      International Journal of Molecular Sciences

      Volume: in press Pages: -

    • Peer Reviewed / Open Access
  • [Journal Article] Molecular basis for diversification of yeast prion strain conformation2018

    • Author(s)
      Ohhashi Yumiko、Yamaguchi Yoshiki、Kurahashi Hiroshi、Kamatari Yuji O.、Sugiyama Shinju、Uluca Boran、Piechatzek Timo、Komi Yusuke、Shida Toshinobu、M?ller Henrik、Hanashima Shinya、Heise Henrike、Kuwata Kazuo、Tanaka Motomasa
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 115 Pages: 2389~2394

    • DOI

      10.1073/pnas.1715483115

    • Peer Reviewed / Open Access
  • [Journal Article] Imaging of Neuronal Activity in Awake Mice by Measurements of Flavoprotein Autofluorescence Corrected for Cerebral Blood Flow2018

    • Author(s)
      Takahashi Manami、Urushihata Takuya、Takuwa Hiroyuki、Sakata Kazumi、Takado Yuhei、Shimizu Eiji、Suhara Tetsuya、Higuchi Makoto、Ito Hiroshi
    • Journal Title

      Frontiers in Neuroscience

      Volume: 11 Pages: 723

    • DOI

      10.3389/fnins.2017.00723

    • Peer Reviewed / Open Access
  • [Journal Article] Distinct binding of PET ligands PBB3 and AV-1451 to tau fibril strains in neurodegenerative tauopathies2017

    • Author(s)
      Ono Maiko、Sahara Naruhiko、Kumata Katsushi、Ji Bin、Ni Ruiqing、Koga Shunsuke、Dickson Dennis W.、Trojanowski John Q.、Lee Virginia M-Y.、Yoshida Mari、Hozumi Isao、Yoshiyama Yasumasa、van Swieten John C.、Nordberg Agneta、Suhara Tetsuya、Zhang Ming-Rong、Higuchi Makoto
    • Journal Title

      Brain

      Volume: 140 Pages: 764-780

    • DOI

      10.1093/brain/aww339

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Altered tau isoform ratio caused by loss of FUS and SFPQ function leads to FTLD-like phenotypes.2017

    • Author(s)
      Ishigaki S, Fujioka Y, Okada Y, Riku Y, Udagawa T, Honda D, Yokoi S, Endo K, Ikenaka K, Takagi S, Iguchi Y, Sahara N, Takashima A, Okano H, Yoshida M, Warita H, Aoki M, Watanabe H, Okad H, Katsuno M, Sobue G.
    • Journal Title

      Cell Reports

      Volume: 18 Pages: 1118-1131

    • DOI

      10.1016/j.celrep.2017.01.013.

    • Peer Reviewed / Open Access
  • [Journal Article] Fluorescence and autoradiographic evaluation of tau PET ligand PBB3 to α-synuclein pathology2017

    • Author(s)
      Koga Shunsuke、Ono Maiko、Sahara Naruhiko、Higuchi Makoto、Dickson Dennis W.
    • Journal Title

      Movement Disorders

      Volume: 32 Pages: 884~892

    • DOI

      10.1002/mds.27013

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] In vivo tau imaging for a diagnostic platform of tauopathy using the rTg4510 mouse line2017

    • Author(s)
      Sahara N*, Shimojo M, Ono M, Takuwa H, Febo M, Higuchi M, Suhara T
    • Journal Title

      Frontiers in Neurology

      Volume: 8 Pages: 663

    • DOI

      10.3389/fneur.201700663

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] タウオリゴマーの実態とその遺伝学的因果関係2017

    • Author(s)
      佐原成彦
    • Journal Title

      実験医学 認知症 発症前治療のために改名すべき分子病態は何か?

      Volume: 35 Pages: 90-96

    • Peer Reviewed
  • [Journal Article] Steroidogenic abnormalities in translocator protein knockout mice and significance in the aging male2017

    • Author(s)
      Barron Anna M.、Ji Bin、Kito Seiji、Suhara Tetsuya、Higuchi Makoto
    • Journal Title

      Biochemical Journal

      Volume: 475 Pages: 75~85

    • DOI

      10.1042/BCJ20170645

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Comparative study of tau PET ligands for detecting distinct tau pathologies2017

    • Author(s)
      佐原成彦
    • Organizer
      脳タンパク質老化と認知症制御国際タウシンポジウム
    • Invited
  • [Presentation] In vivo visualization of tau pathology, neurodegeneration and neuroinflammation for developing a diagnostic platform of tauopathy2017

    • Author(s)
      佐原成彦
    • Organizer
      脳タンパク質老化と認知症制御第2回国際シンポジウム
    • Invited
  • [Presentation] タウを標的とした診断・治療薬開発の現状2017

    • Author(s)
      佐原成彦
    • Organizer
      第39回日本生物学的精神医学会・第47回日本神経精神薬理学会合同年会
    • Invited
  • [Presentation] Visualization of microglial response to tau-induced neurodegeneration in a model of tauopathy2017

    • Author(s)
      Naruhiko Sahara, Jun Maeda, Ai Ishikawa, Maiko Ono, Hiroyuki Takuwa, Masafumi Shimojo, Takeharu Minamihisamatsu, Masaki Tokunaga, Shoko Uchida, Izumi Matsumoto, Ming-Rong Zhang, Tetsuya Suhara, Makoto Higuchi
    • Organizer
      Alzheimer's Association International Conference
    • Int'l Joint Research
  • [Presentation] Investigating combinatory phosphorylation of tau in a propagation model of tauopathy2017

    • Author(s)
      Naruhiko Sahara, Taeko Kimura, Gen Matsumoto
    • Organizer
      Neuroscience 2017
    • Int'l Joint Research

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Published: 2018-12-17  

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