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Development of a curative treatment for myasthenia gravis using a bispecific antibody drug

Research Project

Project/Area Number 20K07019
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionKeio University

Principal Investigator

Moriwaki Yasuhiro  慶應義塾大学, 薬学部(芝共立), 講師 (00392150)

Co-Investigator(Kenkyū-buntansha) 辻 祥太郎  群馬医療福祉大学, 医療技術学部, 教授 (30285192)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords重症筋無力症 / 二重特異性抗体 / ニコチン性アセチルコリン受容体 / メモリーB細胞 / CD3 / CTL誘導二重特異性抗体 / α1nAChR / 自己抗体産生メモリーB細胞
Outline of Research at the Start

本研究では、MG(重症筋無力症:Myasthenia gravis)の根治療法の開発の礎を築くことを目的とし、その目的を達成するため、これまでの我々のグループが培ったBiTE(CTL誘導二重特異性抗体)の技術を用いる。BiTEはがん免疫領域での研究は目覚ましいが、自己免疫疾患領域での応用例は未だ無い。MGを標的としてBiTEの有効性を検討することは、MGの根治治療の可能性を提示するだけでなく、ひいては、他の自己免疫疾患へのBiTE応用の可能性を示すことに繋がると考えられる

Outline of Final Research Achievements

Myasthenia gravis (MG) is an autoimmune disease that results from impaired stimulus transmission at the neuromuscular junction due to the action of autoantibodies against several target antigens on the postsynaptic membrane of the neuromuscular junction. All current treatments for MG are symptomatic and there is no curative therapy. To cure the disease, it is necessary to eradicate the memory B cells of autoantibodies. Recently, CTL-induced bispecific antibodies that utilize cytotoxic T cells (CTLs) have been launched as a method to eradicate B-cell cancer cells. In this study, we aimed to develop a drug with improved CTL-induced bispecific antibody as a method to destroy autoantibody-producing memory B cells, which are the etiologic agent of MG.

Academic Significance and Societal Importance of the Research Achievements

本研究では、MG(重症筋無力症:Myasthenia gravis)の根治療法の開発の礎を築くことを目的とし、その目的を達成するため、これまでの我々のグループが培ったBiTE(CTL誘導二重特異性抗体)の技術を用いる。BiTEはがん免疫領域での研究は目覚ましいが、自己免疫疾患領域での応用例は未だ無い。MGを標的としてBiTEの有効性を検討することは、MGの根治治療の可能性を提示するだけでなく、ひいては、他の自己免疫疾患へのBiTE応用の可能性を示すことに繋がると考えられる

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (4 results)

All 2022 2021

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

  • [Journal Article] New pathways for the skin´s stress response: the cholinergic neuropeptide SLURP-1 can activate mast cells and alter cytokine production in mice.2021

    • Author(s)
      Ertle CM, Rommel FR, Tumala S, Moriwaki Y, Klein J, Kruse J, Gieler U, Peters EMJ.
    • Journal Title

      Front Immunol.

      Volume: 12 Pages: 631881-631881

    • DOI

      10.3389/fimmu.2021.631881

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Regulation of immune functions by non-neuronal acetylcholine (ACh) via muscarinic and nicotinic ACh receptors.2021

    • Author(s)
      Mashimo M, Moriwaki Y, Misawa H, Kawashima K, Fujii T.
    • Journal Title

      Int J Mol Sci.

      Volume: 13 Issue: 13 Pages: 6818-6818

    • DOI

      10.3390/ijms22136818

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] コーヒーによる神経炎症の抑制分子メカニズムの解析2022

    • Author(s)
      村田大典, 森脇康博, 多胡憲治,中澤洋介, 田村悦臣, 多胡めぐみ.
    • Organizer
      第95回日本生化学会大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] コーヒー及び含有成分ピロカテコールによる神経炎症の抑制効果2022

    • Author(s)
      村田大典, 森脇康博, 多胡憲治,中澤洋介, 田村悦臣, 多胡めぐみ.
    • Organizer
      第66回日本薬学会関東支部大会
    • Related Report
      2022 Annual Research Report

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Published: 2020-04-28   Modified: 2024-01-30  

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