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Significance of and treatment against galectin-3 and p22 accompanied with glial inflamation in ALS spinal cord

Research Project

Project/Area Number 19K07996
Research Category

Grant-in-Aid for Scientific Research (C)

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

Principal Investigator

HAYASHI SHINTARO  九州大学, 医学研究院, 共同研究員 (90312876)

Co-Investigator(Kenkyū-buntansha) 山崎 亮  九州大学, 医学研究院, 准教授 (10467946)
小早川 優子  九州大学, 大学病院, 助教 (40733788)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords筋萎縮性側索硬化症 / グリア性炎症 / 脊髄前・側索 / 髄鞘淡明化 / 血液脳関門 / ELISA / 動物モデル / ガレクチン3 / p22 / galectin3 / 脳脊髄液 / 診断マーカー / ミクログリア / 炎症 / galectin-3
Outline of Research at the Start

筋萎縮性側索硬化症は、最重症の神経難病とされる。本疾患が文献で記載され既に1世紀以上が経過したが、現在も原因は不明である。従って、発症前の状態にまで戻せる治療法は存在しない。この理由の1つに発症から確定診断まで平均13ヵ月を要することが指摘されているが、この事は真の病態解明や有効な治療法を開発する上で大きな妨げとなっている。私達は、本疾患の発症初期に関与するグリア炎症関連分子としてガレクチン3とp22という分子を発見した。本研究ではこの両分子に着目し病態を解明するために、発症早期に診断できる検査技術の創出と神経変性疾患に対しては初の分子標的療法の開発を目的とする。

Outline of Final Research Achievements

The pathogenesis of amyotrophic lateral sclerosis (ALS) still remains to be elucidated, and the absence of distinct treatment is the matter to break through in this devasting disorder. After discovery of TDP-43 pathology, it is well known that degeneration of ALS spreads beyond the motor system, and among those areas, we have focused on the diffuse myelin pallor in the anterolateral funiculi outside the corticospinal tracts and massive microglia/macrophage infiltration in the corresponding region. These findings prompted us to examine involvement of activated microglia-associated molecules, galectin-3 and p22, by ELISA and proteome analyses, and to test if these two molecules are useful as early diagnostic marker and treatment targets of ALS. Presently, no significant results have been observed; however, during this study, several pitfalls for using ALS specimens and the ways how to minimize them are indicated, which might shed light on future studies sharing similar objectives.

Academic Significance and Societal Importance of the Research Achievements

ALSが最初に文献に記載され1世紀以上が経過しているものの、現在も病態は不明である。早期診断マーカーがない事実は、今後何らかの治療法が世に出たとしても患者は早期に治療を受ける機会を逸する事を意味する。今回私達は新しい視点でgalectin-3とp22という活性化ミクログリア関連分子に着目しALSの早期診断マーカーとしての有用性の検証と治療方法の樹立を試みた。残念ながら現段階で有意な結果を得られていないが、ELISA法やプロテオーム解析を用いた実験を行うにあたりALS検体特有のpit fallが示唆されたのでその改善策を考察し、今後同じ目的の研究が円滑に行われるための情報の一端を提供した。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (14 results)

All 2022 2021 2020 2019

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (8 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Axonal protein, calretinin, stimulates microglia to produce chemokines associated with clinical severity of ALS2022

    • Author(s)
      Shintaro Hayashi, Ryo Yamasaki, Jun-ichi Kira
    • Journal Title

      Clin Exp Neuroimmunol

      Volume: In press

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Calcium-binding proteins stimulate microglia to induce pro-inflammatory mediators similar to ALS2021

    • Author(s)
      Hayashi S, Yamasaki R, Kira J.
    • Journal Title

      Clin Exp Neuroimmunol

      Volume: -

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Calcium-binding proteins stimulate microglia to induce pro-inflammatory mediators relevant to ALS2020

    • Author(s)
      Hayashi S, Yamasaki R, Okamoto K, KIra J.
    • Journal Title

      Rinsho Shinkeigaku

      Volume: 60

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Immunotherapy-refractory vacuolar myopathy with mucin deposition in scleromyxedema: a possible role of fibroblast growth factor 22020

    • Author(s)
      Yanagihara Y, Hayashi S, Kira J, et al.
    • Journal Title

      Neuropathology

      Volume: 40 Issue: 5 Pages: 492-495

    • DOI

      10.1111/neup.12659

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Microglial galectin-3 in the spinal white matter is a key molecule for motor neuron degeneration in ALS2019

    • Author(s)
      Hayashi S, Yamasaki R, Kira JI, et al.
    • Journal Title

      Amyotroph Lateral Scler Frontotemporal Degener

      Volume: 20 Issue: sup1 Pages: 74-75

    • DOI

      10.1080/21678421.2019.1646546

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Discriminative clinical and neuroimaging features of motor-predominant hereditary diffuse leukoencephalopathy with axonal spheroids and primary progressive multiple sclerosis: A preliminary cross-sectional study2019

    • Author(s)
      Saitoh B, Yamasaki R, Hiwatashi A, Matsushita T, Hayashi S, Mitsunaga Y, Maeda Y, Isobe N, Yoshida K, Ikeda S, Kira J.
    • Journal Title

      Multiple Sclerosis and Related Disorders

      Volume: 31 Pages: 22-31

    • DOI

      10.1016/j.msard.2019.03.008

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] Axonal proteins stimulate microglia to produce pro-inflammatory cytokines relevant to ALS2021

    • Author(s)
      林信太郎、山﨑亮、吉良潤一
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 軸索蛋白であるカルレチニンはミクログリアを刺激し ALSの臨床的重症度と相関するケモカインを産生させる2021

    • Author(s)
      林信太郎、山﨑亮、吉良潤一
    • Organizer
      第33回日本神経免疫学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Axonal protein, calretinin, stimulates microglia to produce chemokines associated with clinical severity of ALS2021

    • Author(s)
      Shintaro Hayashi, Ryo Yamasaki, Jun-ichi Kira
    • Organizer
      32nd International Symposium on ALS/MND
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Calcium-binding proteins stimulate microglia to induce proinflammatory mediators relevant to ALS2020

    • Author(s)
      Hayashi S, Yamasaki R, Okamoto K, KIra J.
    • Organizer
      第61回日本神経学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] カルシウム結合蛋白によるグリア炎症惹起性の検証-筋萎縮性側索硬化症患者の脳脊髄液所見との比較-2020

    • Author(s)
      林信太郎、山崎亮、吉良潤一
    • Organizer
      第32回日本神経免疫学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Macrophage galectin-3 in spinal white matter is a key molecule for TDP-43 pathology in ALS2019

    • Author(s)
      林 信太郎, 山﨑 亮, 岡本 幸市,吉良 潤一
    • Organizer
      第60回日本神経学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] ALS脊髄白質に出現するgalectin-3陽性ミクログリアはTDP-43病理と正相関する2019

    • Author(s)
      林 信太郎, 山﨑 亮, 岡本 幸市,吉良 潤一
    • Organizer
      第31回日本神経免疫学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] Microglial galectin-3 in the spinal white matter is a key molecule for motor neuron degeneration in ALS2019

    • Author(s)
      Shintaro Hayashi, Ryo Yamasaki, Koichi Okamoto, Jun-ichi Kira
    • Organizer
      30th International symposium on ALS/MND
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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