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The involvement of exosomes in neuromyelitis optica spectrum disorders

Research Project

Project/Area Number 18K15443
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

SAJI Etsuji  新潟大学, 医歯学総合病院, 助教 (00706418)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords視神経脊髄炎 / エクソソーム / 細胞外小胞
Outline of Final Research Achievements

Neuromyelitis optica spectrum disorder (NMOSD) is an autoimmune disease of the central nervous system (CNS). Autoantibodies that target the aquaporin 4 water channel (AQP4) expressed in astrocytes cause astrocyte damage, which leads to severe neurological symptoms. We focused on exosomes of the extracellular vesicles, as a candidate factor affecting the disease, and isolated exosomes from human serum. As a preliminary experiment, we performed RNA sequencing of RNA extracted from peripheral blood mononuclear cells. In the future, we will elucidate the involvement of exosomes in the pathogenesis of NMOSD through RNA sequencing of exosomal RNA.

Academic Significance and Societal Importance of the Research Achievements

視神経脊髄炎はアクアポリン4に対する自己抗体が脳のアストロサイトを障害することで重篤な神経障害を引き起こす中枢神経系自己免疫疾患である。アクアポリン4自己抗体の発見により早期診断が可能となり、ステロイドや免疫抑制剤によって再発をある程度抑制できるようになっているが、一部の症例では治療に抵抗性である。NMOSD患者特有のエクソソームのプロファイルを明らかにすることで、より適切な治療選択につなげる可能性がある。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (8 results)

All 2020 2019 2018

All Presentation (8 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] The clinical and immunological features of NMO patients with onset over 80 years old2020

    • Author(s)
      A. Ono, E. Saji, A. Nakajima, T. Wakasugi, F. Yanagimura, K. Yanagawa, O. Onodera, I. Kawachi
    • Organizer
      第61回日本神経学会学術大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 重症筋無力症合併視神経脊髄炎関連疾患の解析2020

    • Author(s)
      佐治越爾, 中島章博, 若杉尚宏, 柳川香織, 小野寺理, 河内泉
    • Organizer
      第32回日本神経免疫学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 多発性硬化症における大脳萎縮の解析2020

    • Author(s)
      若杉尚宏, 佐治越爾, 中島章博, 柳村文寛, 柳川香織, 小野寺 理, 河内 泉
    • Organizer
      第32回日本神経免疫学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] A 28-year observational study of disease activities in a Japanese cohort of neuromyelitis optica spectrum disorders2019

    • Author(s)
      E. Saji, A. Nakajima, T. Wakasugi, F. Yanagimura, K. Yanagawa, M. Hokari, M. Nshizawa, O. Onodera, I. Kawachi
    • Organizer
      The 35th Congress of the European committee for treatment and research in multiple sclerosis(
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 多発性硬化症および視神経脊髄炎患者の臨床的特徴 - 過去28年間における変遷2019

    • Author(s)
      佐治越爾, 中島章博, 若杉尚宏, 柳村文寛, 柳川香織, 穂苅万李子, 小野寺理, 河内泉
    • Organizer
      第30回日本神経免疫学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] 本邦における高齢発症視神経脊髄炎の臨床免疫学的特徴 - 連続73症例の解析から2019

    • Author(s)
      中島章博,佐治越爾,若杉尚宏, 柳村文寛, 柳川香織, 穂苅万李子, 小野寺理, 河内泉
    • Organizer
      第30回日本神経免疫学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Unique clinical features of late-onset neuromyelitis optica spectrum disorders in a Japanese cohort2018

    • Author(s)
      E. Saji, A. Nakajima, T. Wakasugi, F. Yanagimura, K. Yanagawa, O. Onodera, I. Kawachi
    • Organizer
      34th Congress of the european committee for treatment and research in multiple sclerosis
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 視神経脊髄炎関連疾患におけるジェンダー効果の解析2018

    • Author(s)
      佐治越爾, 中島章博, 若杉尚宏, 柳村文寛, 柳川香織, 小野寺理, 河内泉
    • Organizer
      第30回日本神経免疫学会学術集会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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