• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Stress dependent production and release of aggregated proteins in neurodegenerative disorders

Research Project

Project/Area Number 20H00525
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 52:General internal medicine and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Iwatsubo Takeshi  東京大学, 大学院医学系研究科(医学部), 教授 (50223409)

Co-Investigator(Kenkyū-buntansha) 山田 薫  東京大学, 大学院医学系研究科(医学部), 助教 (00735152)
桑原 知樹  東京大学, 大学院医学系研究科(医学部), 講師 (10533903)
若林 朋子  東京大学, 大学院医学系研究科(医学部), 特任准教授 (20530330)
橋本 唯史  東京大学, 大学院医学系研究科(医学部), 特任准教授 (30334337)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥43,550,000 (Direct Cost: ¥33,500,000、Indirect Cost: ¥10,050,000)
Fiscal Year 2022: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2021: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2020: ¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Keywords細胞ストレス / 神経変性 / アルツハイマー病 / パーキンソン病 / タウ蓄積症 / 運動ニューロン疾患 / 神経変性疾患 / 液・液相分離
Outline of Research at the Start

本研究では「細胞ストレス」に曝露された病因タンパク質が異常構造を獲得して変性し、神経細胞間を伝播する機序を解明するため、タウ、αシヌクレイン、TDP-43、FUSについてタンパク質の構造が変化し、凝集する機序、変性した病因タンパク質が選択的に神経細胞間を伝播する機序の解明を目指す。病因タンパク質を過剰発現するtgマウスや、ウイルス発現系を用い、FRETイメージングや、in vivo seeding実験系を駆使して病因タンパク質の脳内神経細胞間伝播を評価する。さらに神経細胞外に放出されたタンパク質の脳内動態測定を行い、病因タンパク質が構造変化を獲得して神経細胞間を伝播される機序を明らかにする。

Outline of Final Research Achievements

We examined the effects of cellular stress on the aggregation and release of pathogenic proteins. In Alzheimer's brains, metabolic stress aggravated ER stress and systemic to brain transmission of noxious signals to enhance amyloid pathology. Tau proteins were shown to be cleared through the glymphatic system, which was enhanced by amyloid stress. Alpha-synuclein aggregates were released by LRRK2-Rab10 signal in a reciprocal manner. Phosphorylation of FUS protein attenuated its insolubility. These findings underscored the importance of various cellular stresses in the aggregation and release of causative proteins.

Academic Significance and Societal Importance of the Research Achievements

アルツハイマー病、パーキンソン病等個別の神経変性疾患に固有の病因タンパク質形成、放出機構の解明を進めることにより、各疾患に特異的な病態が明らかになるとともに、各種の細胞ストレスが神経変性を助長するとの仮説の一端が実証され、今後の神経変性疾患の予防、治療法の開発の方向性に指針を与えることができた。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Comments on the Screening Results   Annual Research Report
  • Research Products

    (15 results)

All 2022 2021 2020

All Journal Article (8 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 4 results)

  • [Journal Article] Molecular Pathogenesis and Disease-modifying Therapies of Alzheimer's Disease and Related Disorders2022

    • Author(s)
      Iwatsubo T
    • Journal Title

      JMA Journal

      Volume: 5 Issue: 3 Pages: 307-313

    • DOI

      10.31662/jmaj.2022-0079

    • ISSN
      2433-328X, 2433-3298
    • Year and Date
      2022-07-15
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Casein kinase 1δ/ε phosphorylates fused in sarcoma (FUS) and ameliorates FUS-mediated neurodegeneration2022

    • Author(s)
      Kishino Yuya、Matsukawa Koji、Matsumoto Taisei、Miyazaki Ryota、Wakabayashi Tomoko、Nonaka Takashi、Kametani Fuyuki、Hasegawa Masato、Hashimoto Tadafumi、Iwatsubo Takeshi
    • Journal Title

      Journal of Biological Chemistry

      Volume: 298 Issue: 8 Pages: 102191-102191

    • DOI

      10.1016/j.jbc.2022.102191

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Actin-binding protein filamin-A drives tau aggregation and contributes to progressive supranuclear palsy pathology2022

    • Author(s)
      Tsujikawa K,Hamanaka K, Riku Y, Hattori Y, Hara N, Iguchi Y,Miyata T, Sobue G, Matsumoto N, Sahashi K, Katsuno M, et al.
    • Journal Title

      Sci Adv

      Volume: - Issue: 21 Pages: 1-16

    • DOI

      10.1126/sciadv.abm5029

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Glymphatic system clears extracellular tau and protect from tau aggregation and neurodegeneration.2022

    • Author(s)
      Ishida K, Yamada K, Nishiyama R, Hashimoto T, Nishida I, Abe Y, Yasui M, Iwatsubo T
    • Journal Title

      Journal of Experimental Medicine

      Volume: 219 Issue: 3

    • DOI

      10.1084/jem.20211275

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tauroursodeoxycholic acid attenuates diet-induced and age-related peripheral endoplasmic reticulum stress and cerebral amyloid pathology in a mouse model of Alzheimer’s disease.2021

    • Author(s)
      Ochiai T, Nagayama T, Matsui K, Amano K, Sano T, Wakabayashi T, Iwatsubo T
    • Journal Title

      J Prev Alzheimers Dis

      Volume: 4 Issue: 4 Pages: 483-494

    • DOI

      10.14283/jpad.2021.33

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Differential involvement of insulin receptor substrate (IRS)-1 and IRS-2 in brain insulin signaling is associated with the effects of their deficiency on amyloid pathology in Alzheimer's disease.2021

    • Author(s)
      Ochiai T, Sano T, Kubota N, Kadowaki T, Wakabayashi T, Iwatsubo T
    • Journal Title

      Neurobiology of Disease

      Volume: 159 Pages: 105510-105510

    • DOI

      10.1016/j.nbd.2021.105510

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Roles of lysosomotropic agents on LRRK2 activation and Rab10 phosphorylation2020

    • Author(s)
      Kuwahara T., Funakawa K., Komori T., Sakurai M., Yoshii G., Eguchi T., Fukuda M., Iwatsubo T.
    • Journal Title

      Neurobiology of Disease

      Volume: 145 Pages: 105081-105081

    • DOI

      10.1016/j.nbd.2020.105081

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Collagenous Alzheimer amyloid plaque component impacts on the compaction of amyloid-β plaques2020

    • Author(s)
      Hashimoto Tadafumi、Fujii Daisuke、Naka Yasushi、Kashiwagi-Hakozaki Mayu、Matsuo Yuko、Matsuura Yusuke、Wakabayashi Tomoko、Iwatsubo Takeshi
    • Journal Title

      Acta Neuropathologica Communications

      Volume: 8 Issue: 1 Pages: 212-212

    • DOI

      10.1186/s40478-020-01075-5

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Alzheimer’s disease: from molecular pathology to therapeutics.2022

    • Author(s)
      Iwatsubo T
    • Organizer
      Multidisciplinary Lecture Series in Life Science & Technology, The University of Tokyo.
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Regulation of stressed lysosomes by LRRK2 in macrophage lineage cells2021

    • Author(s)
      Tomoki Kuwahara
    • Organizer
      International Research Conference on Neurodegenerative Diseases
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] パーキンソン病における新規リソソームストレス応答機構2021

    • Author(s)
      桑原知樹
    • Organizer
      第40回 日本認知症学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Aquaporin4 がタウ蓄積と神経変性に果たす役割2021

    • Author(s)
      山田 薫、石田 和久、橋本 唯史、阿部 陽一郎、安井 正人、岩坪 威
    • Organizer
      第40回 日本認知症学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Analysis of Rab29 phosphorylation under lysosomal overload stress2021

    • Author(s)
      Tomoki Kuwahara, Tadayuki Komori, Kai Funakawa, Maria Sakurai, Takeshi Iwatsubo
    • Organizer
      AD/PD 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Involvement of LRRK2 in the lysosomal and exosomal release2021

    • Author(s)
      Maria Sakurai, Tomoki Kuwahara, Tomoya Eguchi, Takeshi Iwatsubo
    • Organizer
      AD/PD 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Aquaporin-4 deficiency exacerbates tau accumulation and neurodegeneration in a mouse model of tauopathies.2020

    • Author(s)
      Yamada K, Ishida K, Hashimoto T, Abe Y, Yasui M, Iwatsubo T
    • Organizer
      第 43回日本神経科学大会
    • Related Report
      2020 Annual Research Report
    • Invited

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi