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Elucidation of intracellular environmental factors that produce a risk for alpha-Synuclein seeding

Research Project

Project/Area Number 20H03453
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionJuntendo University

Principal Investigator

Imai Yuzuru  順天堂大学, 大学院医学研究科, 先任准教授 (30321730)

Co-Investigator(Kenkyū-buntansha) 井下 強  順天堂大学, 大学院医学研究科, 特任助教 (20601206)
柴 佳保里  順天堂大学, 大学院医学研究科, 准教授 (30468582)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2022: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2020: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywordsα-Synuclein / パーキンソン病 / 脂質 / ミトコンドリア / ショウジョウバエ / iPS細胞 / リン脂質 / CHCHD2 / リソソーム / 脂質解析 / PLA2G6 / iPS / ELOVL7
Outline of Research at the Start

パーキンソン病の原因となるα-Synucleinがプリオン様の性質をもち、神経回路を伝搬することが明らかになりつつある。この発見から、「α-Synucleinの種(凝集化した病因型α-Synuclein)をいかに生じさせないか」が本疾患の最も効果的な予防法の基幹となる。本研究では、α-Synucleinの種の生成と除去の機序を、臨床エビデンスが得られているミトコンドリアと脂質の2つのリスク要因から探索する。具体的には、ミトコンドリアが発するリソソーム制御シグナルの同定とその障害(種の除去の機序)、リン脂質の恒常性の破綻が招くα-Synucleinの不安定化(種生成の機序)について解明する。

Outline of Final Research Achievements

The purpose of this project was to clarify the mechanisms by which mitochondrial and lipid alteration are factors in α-Synuclein aggregation using iPS cells and Drosophila models. In models of mitochondria-associated Parkinson's disease (PD) causative gene CHCHD2, lysosomal dysfunction is suggested to lead to α-Synuclein aggregation and degradation. On the other hand, omics analysis was conducted using mutant flies for PD causative genes PLA2G6 and VPS13C, which are involved in lipid metabolism, and C19orf12, a causative gene for neurodegeneration with brain iron accumulation, to screen for α-Synuclein aggregation risk lipids and their responsible enzymes. A candidate gene was successfully identified.

Academic Significance and Societal Importance of the Research Achievements

パーキンソン病の発症の主要な原因はα-Synucleinの凝集が神経回路を伝播・拡大することであると考えられている。従って、凝集の原因を明らかにし、疾患の予防に努めることがパーキンソン病克服の最良の方法である。本課題で進めたα-Synuclein凝集の原因となるミトコンドリア遺伝子変異によるリソソーム機能の低下、リスク脂質代謝遺伝子の同定、リスクとなる脂質膜の状態の理解は、疾患の予防手段を開発するために寄与すると考える。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (33 results)

All 2022 2021 2020 2016 Other

All Int'l Joint Research (2 results) Journal Article (15 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 12 results,  Open Access: 13 results,  Acknowledgement Compliant: 1 results) Presentation (11 results) (of which Int'l Joint Research: 2 results,  Invited: 5 results) Book (1 results) Remarks (4 results)

  • [Int'l Joint Research] Institute of Neurogenomics(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] National Taiwan University/National Health Research Institutes/Changhua Christian Hospital(その他の国・地域(台湾))

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Parkinson disease-associated Leucine-rich repeat kinase regulates UNC-104-dependent axonal transport of Arl8-positive vesicles in Drosophila.2022

    • Author(s)
      Inoshita T, Liu J-Y, Taniguchi D, Ishii R, Shiba-Fukushima K, Hattori N, Imai Y.
    • Journal Title

      iScience

      Volume: 25 Issue: 12 Pages: 105476-105476

    • DOI

      10.1016/j.isci.2022.105476

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pathophysiological evaluation of the LRRK2 G2385R risk variant for Parkinson’s disease.2022

    • Author(s)
      Tezuka T, Taniguchi D, Sano M, Shimada T, Oji Y, Tsunemi T, Ikeda A, Li Y, Yoshino H, Ogata J, Shiba-Fukushima K, Funayama M, Nishioka K, Imai Y, Hattori N.
    • Journal Title

      NPJ Parkinsons Dis.

      Volume: 8 Issue: 1 Pages: 97-97

    • DOI

      10.1038/s41531-022-00367-y

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] α-Synuclein V15A variant in familial Parkinson's disease exhibits a weaker lipid-binding property.2022

    • Author(s)
      Daida K, Shimonaka S, Shiba-Fukushima K, Ogata J, Yoshino H, Okuzumi A, Hatano T, Motoi Y, Hirunagi T, Katsuno M, Shindou H, Funayama M, Nishioka K, Hattori N, Imai Y.
    • Journal Title

      Mov Disord.

      Volume: 37 Issue: 10 Pages: 2075-2085

    • DOI

      10.1002/mds.29162

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ubiquitination at the lysine 27 residue of the Parkin ubiquitin-like domain is suggestive of a new mechanism of Parkin activation.2022

    • Author(s)
      Liu J-Y, Inoshita T, Shiba-Fukushima K, Yoshida K, Ishihama Y, Imai Y, Hattori N.
    • Journal Title

      Hum Mol Genet.

      Volume: 31 Issue: 15 Pages: 2623-2638

    • DOI

      10.1093/hmg/ddac064

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neurodegeneration-associated mitochondrial proteins, CHCHD2 and CHCHD10-what distinguishes the two?2022

    • Author(s)
      Aya Ikeda
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 10 Pages: 1-12

    • DOI

      10.3389/fcell.2022.996061

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical Manifestations and Molecular Backgrounds of Parkinson's Disease Regarding Genes Identified From Familial and Population Studies2022

    • Author(s)
      Nishioka Kenya、Imai Yuzuru、Yoshino Hiroyo、Li Yuanzhe、Funayama Manabu、Hattori Nobutaka
    • Journal Title

      Frontiers in Neurology

      Volume: 13 Pages: 764917-764917

    • DOI

      10.3389/fneur.2022.764917

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Novel LRRK2 Variant p.G2294R in the WD40 Domain Identified in Familial Parkinson’s Disease Affects LRRK2 Protein Levels2021

    • Author(s)
      Ogata Jun、Hirao Kentaro、Nishioka Kenya、Hayashida Arisa、Li Yuanzhe、Yoshino Hiroyo、Shimizu Soichiro、Hattori Nobutaka、Imai Yuzuru
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 7 Pages: 3708-3708

    • DOI

      10.3390/ijms22073708

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Syntaxin 17, an ancient SNARE paralog, plays different and conserved roles in different organisms2021

    • Author(s)
      Kato Shun、Arasaki Kohei、Tokutomi Natsuki、Imai Yuzuru、Inoshita Tsuyoshi、Hattori Nobutaka、Sasaki Taeko、Sato Miyuki、Wakana Yuichi、Inoue Hiroki、Tagaya Mitsuo
    • Journal Title

      Journal of Cell Science

      Volume: 134 Issue: 22

    • DOI

      10.1242/jcs.258699

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Editorial: Molecular Links Between Mitochondrial Damage and Parkinson's Disease and Related Disorders2021

    • Author(s)
      Imai Yuzuru、Kim Kiyoung、Wu Zhihao、Sato Shigeto
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 9

    • DOI

      10.3389/fcell.2021.734475

    • Related Report
      2021 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] UQCRC1 engages cytochrome c for neuronal apoptotic cell death2021

    • Author(s)
      Hung Yu-Chien、Huang Kuan-Lin、Chen Po-Lin、Li Jeng-Lin、Lu Serena Huei-An、Chang Jui-Chih、Lin Han-Yi、Lo Wen-Chun、Huang Shu-Yi、Lee Tai-Ting、Lin Tai-Yi、Imai Yuzuru、Hattori Nobutaka、Liu Chin-San、Tsai Su-Yi、Chen Chun-Hong、Lin Chin-Hsien、Chan Chih-Chiang
    • Journal Title

      Cell Reports

      Volume: 36 Issue: 12 Pages: 109729-109729

    • DOI

      10.1016/j.celrep.2021.109729

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High-fat diet-induced activation of SGK1 promotes Alzheimer’s disease-associated tau pathology2021

    • Author(s)
      Elahi Montasir、Motoi Yumiko、Shimonaka Shotaro、Ishida Yoko、Hioki Hiroyuki、Takanashi Masashi、Ishiguro Koichi、Imai Yuzuru、Hattori Nobutaka
    • Journal Title

      Human Molecular Genetics

      Volume: 30 Issue: 18 Pages: 1693-1710

    • DOI

      10.1093/hmg/ddab115

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lipids: Key Players That Modulate -Synuclein Toxicity and Neurodegeneration in Parkinson’s Disease2020

    • Author(s)
      Akio Mori, Yuzuru Imai, Nobutaka Hattori
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 21 Issue: 9 Pages: 9-9

    • DOI

      10.3390/ijms21093301

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Editorial for the Special Issue “Animal Models of Parkinson’s Disease and Related Disorders”2020

    • Author(s)
      Imai Y
    • Journal Title

      Int. J. Mol. Sci.

      Volume: 21 Issue: 12 Pages: 4250-4250

    • DOI

      10.3390/ijms21124250

    • Related Report
      2020 Annual Research Report
    • Open Access
  • [Journal Article] PINK1-Parkin signaling in Parkinson's disease: Lessons from Drosophila.2020

    • Author(s)
      Imai Y
    • Journal Title

      Neurosci Res.

      Volume: 159 Pages: 40-46

    • DOI

      10.1016/j.neures.2020.01.016

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Guidelines for the use and interpretation of assays for monitoring autophagy (3rd edition)2016

    • Author(s)
      Klionsky DJ., Abdelmohsen K., Abe A., Abedin MJ.,Inomata M., et al.
    • Journal Title

      Autophagy

      Volume: 12(1) Issue: 1 Pages: 1-222

    • DOI

      10.1080/15548627.2015.1100356

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Presentation] 若年性パーキンソン病原因遺伝子産物Parkinの活性化メカニズムの新規知見2022

    • Author(s)
      今居 譲
    • Organizer
      第95回日本生化学会大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Loss of MPAN-associated C19orf12 causes alteration of lipid metabolism and autophagosome-lysosome trafficking in Drosophila.2022

    • Author(s)
      Shiina K, Mori A, Miki Y, Murakami M, Ueno N, Miura Y, Hatano T, Imai Y, Hattori N
    • Organizer
      8th International symposium on NBIA
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Two novel variants in CHCHD2 associate with TDP-43 pathology among amyotrophic lateral sclerosis.2022

    • Author(s)
      Ikeda A, Funayama M, Yoshida M, Li Y, Inoshita T, Shiba-Fukushima K, Meng H, Amo T, Aiba I, Saito Y, Atsuta N, Nakamura R, Tohnai G, Sone J, Izumi Y, Kaji R, Morita M, Taniguchi A, Nishioka K, Imai Y, Sobue G, Hattori N, JaCALS
    • Organizer
      第63回日本神経学会学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Loss of MPAN-associated C19orf12 causes alteration of lipid metabolism in Drosophila.2022

    • Author(s)
      Shiina K, Mori A, Miki Y, Murakami M, Ueno N, Miura Y, Hatano T, Imai Y, Hattori N
    • Organizer
      第63回日本神経学会学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Ubiquitination at the lysine 27 residue of the Parkin ubiquitin-like domain is suggestive of a new mechanism of Parkin activation.2022

    • Author(s)
      Liu J-Y, Inoshita T, Shiba-Fukushima K, Hattori N, Imai Y
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Drosophila VPS13 regulates neuronal synaptic activity and mitochondrial homeostasis.2022

    • Author(s)
      Shiba-Fukushima K, Inoshita T, Imai Y, Hattori N
    • Organizer
      Neuro2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Screening of lipid species and associated enzymes that participate in α-synuclein aggregation.2022

    • Author(s)
      Kasahara R, Ogata J, Shiina K, Shiba-Fukushima K, Inoshita T, Hattori N, Imai Y
    • Organizer
      MBSJ2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] ミトコンドリア変性とパーキンソン病2021

    • Author(s)
      今居 譲
    • Organizer
      第20回日本ミトコンドリア学会年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] αシヌクレインの凝集要因、生体膜脂質とミトコンドリア2021

    • Author(s)
      今居 譲
    • Organizer
      第35回日本大脳基底核研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Mechanism of α-Synuclein aggregation by the disturbance of biomembrane remodelling2021

    • Author(s)
      Imai Y
    • Organizer
      “LIFS Seminar Series”, at Devision of Life Science, Hong Kong University of Science and Technology
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] パーキンソン病病態に関与するリン脂質変化2020

    • Author(s)
      今居 譲
    • Organizer
      第 63 回日本神経化学会大会 公募シンポジウム7「脂質が制御する神経機能」
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Book] Experimental Models of Parkinson’s Disease2021

    • Author(s)
      Yuzuru Imai
    • Total Pages
      228
    • Publisher
      Humana Press
    • Related Report
      2021 Annual Research Report
  • [Remarks] パーキンソン病病態解明研究講座 研究

    • URL

      https://www.juntendo.ac.jp/graduate/laboratory/labo/parkinsons_disease/k4.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] 順天堂大学大学院 医学研究科 パーキンソン病病態解明研究講座

    • URL

      https://www.juntendo.ac.jp/graduate/laboratory/labo/parkinsons_disease/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 順天堂大学大学院 パーキンソン病病態解明研究講座

    • URL

      https://www.juntendo.ac.jp/graduate/laboratory/labo/parkinsons_disease/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 順天堂大学大学院医学系研究科 パーキンソン病病態解明研究講座 研究紹介動画

    • URL

      https://www.juntendo.ac.jp/news/20200325-02.html

    • Related Report
      2020 Annual Research Report

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

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