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Ultrasonically specific amplification of amyloid fibril seeds of neurodegenerative proteins

Research Project

Project/Area Number 20K22484
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0402:Nano/micro science, applied condensed matter physics, applied physics and engineering, and related fields
Research InstitutionOsaka University

Principal Investigator

Kichitaro Nakajima  大阪大学, 国際医工情報センター, 特任研究員(常勤) (20867337)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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アミロイド線維 / 超音波化学 / 超音波照射 / ソノケミストリー / 神経変性疾患 / 過飽和生命科学
Outline of Research at the Start

アルツハイマー病に代表される神経変性疾患は社会的問題であり、早期診断法がないことが大きな問題の一つとしてあげられる。この問題に対して、患者検体へ超音波を照射し、検体に含まれる毒性蛋白質の性質を検査することにより、神経変性疾患の早期診断法を確立することを目指す。超音波はその音の大きさと音色(周波数)により様々な性質を示す。本研究では、これらのパラメータを変化させながら、標的である蛋白質を検査するために最適な条件を見出し、診断に応用可能かどうかを検討する。

Outline of Final Research Achievements

Amyloid fibrils are causative matters of neurodegenerative diseases represented by Alzheimer's disease. Since recent studies revealed that patients with early-stage neurodegenerative diseases possess an ultra-trace amount of seeds in their body, detecting those amyloid seeds can provide an early-stage diagnosis method for neurodegenerative diseases. In this study, the effects of ultrasonic irradiation on amyloid seed detection were investigated experimentally. The experimental results suggested that ultrasonic irradiation can detect amyloid seeds more sensitive than a conventional shaking method and revealed that ultrasonic cavitation plays a crucial role in the mechanism.

Academic Significance and Societal Importance of the Research Achievements

本研究では、独自の超音波アミロイド装置の構築と超音波がアミロイド線維核検出過程に及ぼす影響を明らかにした。本研究で得られた成果は、パーキンソン病やアルツハイマー病などのアミロイド線維核検出に着目した早期診断法の確立に貢献すると期待される。

Report

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

    (9 results)

All 2022 2021 2020

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (7 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Half-Time Heat Map Reveals Ultrasonic Effects on Morphology and Kinetics of Amyloidogenic Aggregation Reaction2021

    • Author(s)
      Nakajima Kichitaro、Toda Hajime、Yamaguchi Keiichi、So Masatomo、Ikenaka Kensuke、Mochizuki Hideki、Goto Yuji、Ogi Hirotsugu
    • Journal Title

      ACS Chemical Neuroscience

      Volume: 12 Issue: 18 Pages: 3456-3466

    • DOI

      10.1021/acschemneuro.1c00461

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Optimized sonoreactor for accelerative amyloid-fibril assays through enhancement of primary nucleation and fragmentation2021

    • Author(s)
      Nakajima Kichitaro、Noi Kentaro、Yamaguchi Keiichi、So Masatomo、Ikenaka Kensuke、Mochizuki Hideki、Ogi Hirotsugu、Goto Yuji
    • Journal Title

      Ultrasonics Sonochemistry

      Volume: 73 Pages: 105508-105508

    • DOI

      10.1016/j.ultsonch.2021.105508

    • NAID

      120007148338

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Mechanism of supersaturation-limited onset of dialysis-related amyloidosis by β2-m2022

    • Author(s)
      K. Nakajima
    • Organizer
      6th Ulm meeting - Biophysics of amyloid formation
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Specific effect of ultrasonic irradiation on amyloid-fibril formation reaction2021

    • Author(s)
      K. Nakajima, H. Toda, K. Yamaguchi, H. Ogi, and Y. Goto
    • Organizer
      The 42nd symposium on ultrasonic electronics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アミロイド凝集反応におけるダイナミクスと凝集形態に及ぼす超音波キャビテーション効果について2021

    • Author(s)
      戸田元,中島吉太郎,山口圭一,荻博次,後藤祐児
    • Organizer
      2021年 生物物理学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 超音波照射を利用した夾雑物存在下におけるβ2ミクログロブリンのアミロイド線維形成反応の研究2021

    • Author(s)
      中島吉太郎,山口圭一,山本卓,荻博次,後藤祐児
    • Organizer
      2021年 生物物理学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 同時多検体超音波照射システムを用いた加速的アミロイド線維形成反応の研究2021

    • Author(s)
      中島吉太郎、戸田元、山口圭一、宗正智、荻博次、後藤祐児
    • Organizer
      2021年蛋白質科学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] High-throughput sonochemical reactor for accelerative amplification of ultratrace amyloid-fibril seeds2020

    • Author(s)
      Kichitaro Nakajima, Hajime Toda, Keiichi Yamaguchi, Masatomo So, Hirotsugu Ogi, and Yuji Goto
    • Organizer
      The 41th Symposium on Ultrasonic Electronics (USE2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Highly sensitive detection of β2-microglobulin seeds by ultrasonic irradiation2020

    • Author(s)
      Ryota Matsuda, Yasushi Oshikane, Kentaro Noi, Masatomo So, Kichitaro Nakajima, Keiichi Yamaguchi, Yuji Goto, and Hirotsugu Ogi
    • Organizer
      The 41th Symposium on Ultrasonic Electronics (USE2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-09-29   Modified: 2023-01-30  

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