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

Detecting early-stage biomarker of multiple sclerosis using Imaging Mass Spectrometry

Research Project

Project/Area Number 17K09786
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Neurology
Research InstitutionDoshisha University

Principal Investigator

Ikegawa Masaya  同志社大学, 生命医科学部, 教授 (60381943)

Co-Investigator(Kenkyū-buntansha) 近藤 誉之  京都大学, 医学研究科, 准教授 (50322756)
角田 伸人  同志社大学, 生命医科学部, 助教 (50544615)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords多発性硬化症 / イメージング質量分析 / プロテオミクス / 実験的自己免疫性脳脊髄炎 / バイオマーカー / EAE / 治療薬 / 脳神経疾患 / プロテオーム / イメージング質量分析法
Outline of Final Research Achievements

Experimental autoimmune encephalomyelitis (EAE) is the most commonly used experimental model for the human inflammatory demyelinating disease, multiple sclerosis (MS). In this study, we applied matrix-assisted laser desorption/ionization (MALDI) mass imaging mass spectrometry (IMS) for EAE mice brain and spinal cord at proteome level. By single peak analysis, we have found a few protein markers that co-localized with immune cell infiltrations in cerebellum, hippocampus as well as spinal cords of the pre-symptomatic to symptomatic EAE animals, which disappeared at the chronic phase. To functionally test this hypothesis, we blocked the protein signals with a small molecule compound, a kind of immunosuppressant, before and after the onset of EAE symptoms to estimate its efficiency by a conventional clinical scoring method and histopathology. With this strategy, we have succeeded in obtaining a novel therapeutic target of multiple sclerosis as well as biomarkers through IMS.

Academic Significance and Societal Importance of the Research Achievements

イメージング質量分析法を用い、多発性硬化症モデルマウス脳・脊髄におけるin situ 組織プロテオーム解析の結果、病気の症状の現れる直前からすでに脳内には一群の免疫細胞の浸潤が認められ、これらの細胞と局在の一致するタンパク質・ペプチドを特定し、さらに免疫組織学的に検証に成功した。本研究は、これらの候補分子の中から最もよく脳病理を反映していると考えられるタンパク質のシグナルをブロックするような薬剤をEAEに予防投与と治療投与を行い、その両方で顕著な効果を確認した。今後はヒトへの応用可能性について検討する必要を認め、神経難病の新たな症状改善薬の開発の発端となることは社会的に意義深いと考えられる。

Report

(2 results)
  • 2019 Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (2 results)

All 2018 2017

All Presentation (1 results) (of which Int'l Joint Research: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Presentation] In situ characterization of infiltrated immune cells of murine EAE by MALDI imaging mass spectrometry2017

    • Author(s)
      Hiroki Yamashita, Takashi Nirasawa, Toshiji Kudo, Katsutoshi Taguchi, Masaki Tanaka Takayuki Kondo, Nobuto Kakuda, Masaya Ikegawa
    • Organizer
      HUPO2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 特許権2018

    • Inventor(s)
      池川雅哉
    • Industrial Property Rights Holder
      池川雅哉
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-011726
    • Filing Date
      2018
    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi