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Novel Therapy Targeting REM Sleep in Lewy Body Disease.

Research Project

Project/Area Number 20K07883
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52020:Neurology-related
Research InstitutionKyoto University

Principal Investigator

Egawa Naohiro  京都大学, 医学研究科, 助教 (20534340)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsレビー小体病 / レム睡眠 / 認知症 / αシヌクレイン / REM睡眠 / 睡眠覚醒リズム / 認知症と睡眠 / REM睡眠行動異常症
Outline of Research at the Start

レビー小体病(Lewy body disease: LBD)の前駆症状として最も重要なバイオマーカーは、REM 睡眠中に発声や運動異常がおこるREM 睡眠行動異常( REM sleep behavior disorder :RBD)である。しかし、LBDの病態の本質であるαシヌクレイン(α-Syn)の凝集/伝播の病理進展とRBDとの関連は不明である。本研究では、(1)線条体RBDモデルマウスを用いたREM睡眠介入による新規治療の検証 (2)より臨床像に近い嗅球RBDモデルマウスの確立 (3)嗅球RBDモデルマウスに対するREM睡眠介入治療の検証を実施することを通して、「RBDモデルマウスのREM睡眠に介入することによってα-Syn病理の進展を抑制できるか」を検証し、LBDの新規治療法の確立を目指す。

Outline of Final Research Achievements

We inoculated α-synuclein (α-Syn) aggregates (mPFFs) into the mouse brain and examined the association between pathological progression and sleep phenotype. mPFFs injected into the striatum of SNCA A53T mutant mice propagated and accumulated in cholinergic neurons in the brainstem (PPT) one month later, resulting in increased REM sleep and a REM sleep behavior abnormalities (RBD)-like phenotype. (Okuda S., Egawa N et al. IJMS 2022) Next, we injected mPFFs into the olfactory bulb to reveal abnormal REM sleep structure and its neuronal circuitry, and used viral vectors to control the REM neuronal circuitry.

Academic Significance and Societal Importance of the Research Achievements

本研究は、レビー小体病のモデルマウスを用いて、αシヌクレイン蛋白の伝播と蓄積が同疾患のレム睡眠の異常とレム睡眠の筋活動の異常を増強することを初めて明らかにした。レム睡眠の異常はレビー小体病の発症・診断時期の約10年先行することから、重要なバイオマーカーと考えられる。本研究は、レム睡眠の異常を引き起こす神経回路を明らかにし、αシヌクレインをターゲットにしたレビー小体病の早期治療介入プラットホームを提供した。今後、同定されたレム睡眠神経回路異常の制御を目指し、病態進行の予防を図る。これらの成果は、ますます増加するレビー小体病に対する新たな治療法につながると期待される。

Report

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

    (13 results)

All 2023 2022 2021 2020

All Journal Article (11 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 11 results,  Open Access: 10 results) Presentation (1 results) Book (1 results)

  • [Journal Article] Myoclonic Epilepsy with Ragged-red Fibers with Intranuclear Inclusions2022

    • Author(s)
      Kawazoe T, Tobisawa S, Sugaya K, Uruha A, Miyamoto K, Komori T, Goto Y, Nishino I, Yoshihashi H, Takeshi Mizuguchi T, Matsumoto N, Egawa N, Kawata A, Isozaki E.
    • Journal Title

      Internal Medicine

      Volume: 61 Issue: 4 Pages: 547-552

    • DOI

      10.2169/internalmedicine.7767-21

    • NAID

      130008159893

    • ISSN
      0918-2918, 1349-7235
    • Year and Date
      2022-02-15
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Striatal-Inoculation of α-Synuclein Preformed Fibrils Aggravated the Phenotypes of REM Sleep without Atonia in A53T BAC-SNCA Transgenic Mice2022

    • Author(s)
      Okuda Shinya、Nakayama Takeo、Uemura Norihito、Hikawa Rie、Ikuno Masashi、Yamakado Hodaka、Inoue Haruhisa、Tachibana Naoko、Hayashi Yu、Takahashi Ryosuke、Egawa Naohiro
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 21 Pages: 13390-13390

    • DOI

      10.3390/ijms232113390

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Safety and tolerability of bosutinib in patients with amyotrophic lateral sclerosis (iDReAM study): A multicentre, open-label, dose-escalation phase 1 trial2022

    • Author(s)
      Imamura K、Izumi Y、Nagai M、Nishiyama K、Watanabe Y、Hanajima R、Egawa N、Ayaki T、Oki R、Fujita K、Uozumi R、Morinaga A、Hirohashi T、Fujii Y、Yamamoto T、Tatebe H、Tokuda T、Takahashi N、Morita S、Takahashi R、Inoue H
    • Journal Title

      eClinicalMedicine

      Volume: 53 Pages: 101707-101707

    • DOI

      10.1016/j.eclinm.2022.101707

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cellular analysis of SOD1 protein-aggregation propensity and toxicity: a case of ALS with slow progression harboring homozygous SOD1-D92G mutation2022

    • Author(s)
      M. Sawamura, K. Imamura, R. Hikawa, T. Enami, A. Nagahashi, H. Yamakado, H. Ichijo, T. Fujisawa, H. Yamashita, S. Minamiyama, M. Kaido, H. Wada, M. Urushitani, H. Inoue, N. Egawa, R. Takahashi
    • Journal Title

      Sci. Rep.

      Volume: 12 Issue: 1 Pages: 12636-12636

    • DOI

      10.1038/s41598-022-16871-3

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] TDP-43 regulates cholesterol biosynthesis by inhibiting sterol regulatory element-binding protein 22022

    • Author(s)
      Egawa Naohiro, Seki Tsuneyoshi, Kobayashi Kazuhiro, Toda Tatsushi, Inoue Haruhisa, et al
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 12133-4

    • DOI

      10.1038/s41598-022-12133-4

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Predictive Diagnostic Approach to Dementia and Dementia Subtypes Using Wireless and Mobile Electroencephalography: A Pilot Study2022

    • Author(s)
      Li Fangzhou、Matsumori Shoya、Egawa Naohiro、Yoshimoto Shusuke、Yamashiro Kotaro、Mizutani Haruo、Uchida Noriko、Kokuryu Atsuko、Kuzuya Akira、Kojima Ryosuke、Hayashi Yu、Takahashi Ryosuke
    • Journal Title

      Bioelectricity

      Volume: 4 Issue: 1 Pages: 3-11

    • DOI

      10.1089/bioe.2021.0030

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] High Mobility Group A1 Regulates Transcription Levels of Oligodendrocyte Marker Genes in Cultured Oligodendrocyte Precursor Cells2022

    • Author(s)
      Egawa Naohiro、Hamanaka Gen、Chung Kelly K.、Ishikawa Hidehiro、Shindo Akihiro、Maki Takakuni、Takahashi Ryosuke、Inoue Haruhisa、Lo Eng H.、Arai Ken
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 4 Pages: 2236-2236

    • DOI

      10.3390/ijms23042236

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Human iPS cell-derived mural cells as an in vitro model of hereditary cerebral small vessel disease2020

    • Author(s)
      Yamamoto Yumi、Kojima Katsutoshi、Taura Daisuke、Sone Masakatsu、Washida Kazuo、Egawa Naohiro、Kondo Takayuki、Minakawa Eiko N.、Tsukita Kayoko、Enami Takako、Tomimoto Hidekazu、Mizuno Toshiki、Kalaria Raj N.、Inagaki Nobuya、Takahashi Ryosuke、Harada-Shiba Mariko、Ihara Masafumi、Inoue Haruhisa
    • Journal Title

      Molecular Brain

      Volume: 13 Issue: 1 Pages: 38-38

    • DOI

      10.1186/s13041-020-00573-w

    • NAID

      120006818682

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Generation of a human induced pluripotent stem cell line derived from a Parkinson's disease patient carrying SNCA duplication2020

    • Author(s)
      Hidefumi Suzuki et al.
    • Journal Title

      Stem Cell Research

      Volume: 45 Pages: 101828-101828

    • DOI

      10.1016/j.scr.2020.101828

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of the Reading Cognitive Test Kyoto (ReaCT Kyoto) for Early Detection of Cognitive Decline in Patients with Hearing Loss2020

    • Author(s)
      Okano Takayuki、Yamamoto Yosuke、Kuzuya Akira、Egawa Naohiro、Kawakami Koji、Furuta Ichiro、Mizuno Kayoko、Fujino Kiyohiro、Kojima Ken、Omori Koichi
    • Journal Title

      Journal of Alzheimer's Disease

      Volume: 73 Issue: 3 Pages: 981-990

    • DOI

      10.3233/jad-190982

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] From in vitro to in vivo reprogramming for neural transdifferentiation: An approach for CNS tissue remodeling using stem cell technology2020

    • Author(s)
      Egawa Naohiro、Suzuki Hidefumi、Takahashi Ryosuke、Hayakawa Kazuhide、Li Wenlu、Lo Eng H、Arai Ken、Inoue Haruhisa
    • Journal Title

      Journal of Cerebral Blood Flow & Metabolism

      Volume: 40 Issue: 9 Pages: 1739-1751

    • DOI

      10.1177/0271678x20910324

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 生体活動データと深層学習を組み合わせた新たな認知症診断ツールの可能性を探る2021

    • Author(s)
      江川斉宏、吉本秀輔、小林勝哉、葛谷聡、松橋眞生、木下彩栄、池田昭夫、高橋良輔
    • Organizer
      第62回 日本神経学会総会、京都、2021.5.21
    • Related Report
      2021 Research-status Report
  • [Book] わかりやすい内科学 第5版  レビー小体型認知症2023

    • Author(s)
      井村裕夫、足立壯一、稲垣暢也、尾野 亘、木下彩栄、妹尾 浩、長尾美紀、平井豊博、藤井康友、森信暁雄、柳田素子
    • Total Pages
      1016
    • Publisher
      文光堂
    • ISBN
      9784830620676
    • Related Report
      2022 Annual Research Report

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

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