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Establishment of a new CSPG degradation therapy using GUS-D6 and its application to ALS

Research Project

Project/Area Number 17K18226
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Applied pharmacology
Orthopaedic surgery
Research InstitutionSuzuka University of Medical Science

Principal Investigator

Oikawa Hirotaka  鈴鹿医療科学大学, 薬学部, 助教 (00732041)

Project Period (FY) 2017-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords筋萎縮性側索硬化症 / ALS / β-グルクロニダーゼ / GUS / 酵素精製 / GUS-D6 / Native GUS / ALSマウス / Native GUS 中枢移行性 / GUSによる神経細胞伸長補助 / 酵素療法 / コンドロイチン硫酸プロテオグリカ ン / 応用薬理学 / CSPG分解療法 / ドラッグデリバリー
Outline of Final Research Achievements

The aim of this study was to develop a new therapeutic approach using β-glucuronidase (GUS), an enzyme that degrades chondroitin sulfate proteoglycans that accumulate in ALS lesions. However, experiments were performed with GUS because autologous purification of GUS-D6, which has high CNS migration, failed. When GUS was applied to Neuro-2a cells, a tendency toward axonal outgrowth was observed. In addition, when GUS was administered through the tail vein of wild-type mice, translation to the central nervous system and spinal cord was observed. Therefore, since a therapeutic effect could be expected even without GUS-D6, GUS administration was performed on ALS model mice.
As a result, a delay of about 3 weeks in the onset of ALS symptoms and a possible reduction in brain atrophy was observed.

Academic Significance and Societal Importance of the Research Achievements

ALSの病態発症の原因としては異常タンパク質凝集やそれに付随する神経突起の短縮、ミトコンドリア機能障害や酸化ストレス、神経の炎症や興奮毒性による神経細胞死など多岐にわたる。本研究は、これまでにアプローチが全くといってなかった運動神経の外部環境を調整する方法でALSの病態改善を目指したところに新規的な意義がある。結果的に、ALSモデルマウスにおいて、病態発症の遅延の可能性までしか確認できず、劇的な治療効果は得られなかった。しかしながら、現在の臨床治療薬リルゾールや、近年ALSに有効性があると報告があったロピニロールと、GUSを併用する事によってALS患者のQOL改善効果が期待できると考える。

Report

(7 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (7 results)

All 2018 2017

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Anxiolytic Effects of Acanthopanax senticosus HARMS Occur via Regulation of Autonomic Function and Activate Hippocampal BDNF?TrkB Signaling2018

    • Author(s)
      Miyazaki Shouhei、Oikawa Hirotaka、Takekoshi Hideo、Hoshizaki Masako、Ogata Masato、Fujikawa Takahiko
    • Journal Title

      Molecules

      Volume: 24 Issue: 1 Pages: 132-132

    • DOI

      10.3390/molecules24010132

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 5.Aroma of Eucommia leaf extract (ELE) causes reduced locomotor activity and increased NREM sleep, acting like the partially related factors of oral ELE’s effects with locomotor-activity-dependent-increase in NREM- and REM-sleep.2018

    • Author(s)
      イ)Shouhei Miyazaki, Hirotaka Oikawa, Shoko Nakamichi, Tetsuya Hirata, Hiroo Yamasaki, Yasuyo Yamaguchi, Wenping Zhang, Sansei Nishibe, Masato Ogata, Takahiko Fujikawa
    • Journal Title

      Global Drugs and Therapeutics

      Volume: 3 Issue: 2

    • DOI

      10.15761/gdt.1000s2001

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Current therapy of spinal cord injury2017

    • Author(s)
      Oikawa Hirotaka、Fujikawa Takahiko、Tomatsu Shunji
    • Journal Title

      Global Drugs and Therapeutics

      Volume: 2 Issue: 2

    • DOI

      10.15761/gdt.1000118

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Challenge to Elucidate the Cause of Depression-like Symptoms by Individuality.2018

    • Author(s)
      Hirotaka Oikawa, shyouhei Miyazaki, Takahiko Fujikawa
    • Organizer
      International Conference on Neurovascular and Neurodegenerative diseases
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Correlation between rat personality and learning ability, and possible involvement of NR1 subunit.2018

    • Author(s)
      Hirotaka Oikawa, Shouhei Miyazaki, Rina Kato, Masato Ogata, Takahiko Fujikawa
    • Organizer
      18th World Congress of Basic and Clinical Pharmacology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 同腹仔の低アルカリフォスファターゼ症モデルマウスの重症度の違いついての報告2018

    • Author(s)
      及川弘崇 藤川隆彦 戸松俊治
    • Organizer
      日本薬学会
    • Related Report
      2018 Research-status Report
  • [Presentation] 臨界期マウス一次視覚野で変動するタンパク質のプロテオーム解析2018

    • Author(s)
      及川弘崇、古川絢子、宮﨑翔平、藤川隆彦
    • Organizer
      日本薬学会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2024-01-30  

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