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Lipid-conjugated Heteroduplex oligonucleotide administration for ischemic stroke in the hyperacute phase

Research Project

Project/Area Number 20K07733
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 51030:Pathophysiologic neuroscience-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Satoru Ishibashi  東京医科歯科大学, 大学院医歯学総合研究科, 非常勤講師 (30533369)

Co-Investigator(Kenkyū-buntansha) 石黒 太郎  東京医科歯科大学, 医学部附属病院, 助教 (20748587)
Project Period (FY) 2020-04-01 – 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 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords脳血管障害 / 核酸医薬 / 動物モデル / 薬剤送達 / 脳卒中 / マウスモデル / モデル動物 / 脳梗塞 / 人工核酸 / 脂質リガンド / ヘテロ核酸 / 脂質ライガンド / 脂質受容体
Outline of Research at the Start

補助事業期間全体の研究計画に関して、年度ごとに以下のような研究計画を予定している。最終的には虚血病態に最適化した脂質ライガンドを選定し、経静脈投与したヘテロ核酸を虚血病巣内にデリバリーし、病態制御による治療法を開発させる。
令和2年度:in vitro 脳梗塞モデルを用いた虚血病態に適した脂質ライガンドのスクリー ニング
令和3年度:脂質ライガンド結合型HDOの送達及び遺伝子抑制効果をin vivo(マウス脳梗塞モデル)で確認する
令和4年度:脂質ライガンド結合型HDOによる脳梗塞モデルに対する治療効果の検討

Outline of Final Research Achievements

Antisense oligonucleotide (ASO) is a major tool used for silencing pathogenic genes. For stroke in the hyperacute stage, however, the ability of ASO to regulate genes is limited by its poor delivery to the ischemic brain owing to sudden occlusion of the supplying artery. Here we show that, in a mouse model of permanent ischemic stroke, lipid-ligand conjugated DNA/RNA heteroduplex oligonucleotide (lipid-HDO) was unexpectedly delivered 9.6 times more efficiently to the ischemic area of the brain than to the contralateral non-ischemic brain and achieved robust gene knockdown and change of stroke phenotype. This delivery to neurons was mediated via receptor-mediated transcytosis by lipoprotein receptors in brain endothelial cells, the expression of which was significantly upregulated after ischemia. This study provides proof-of-concept that lipid-HDO is a promising gene-silencing technology for stroke treatment in the hyperacute stage.

Academic Significance and Societal Importance of the Research Achievements

脳梗塞後の病態や治療標的となる遺伝子は解明されつつあるも、急性期に投与可能な有効な薬剤開発が実現できていない。脳血流の減少やBBBによるバリア機能により、脳梗塞病変への薬剤送達が困難なことが課題であった。脂質ライガンド結合HDO技術は、この課題を克服することができ脳梗塞急性期治療の遺伝子制御ツールとして臨床応用されることが期待される。我々の技術は、経静脈的投与により投与が可能であることは合併症予防の観点からも非常に優れているといえる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2023 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (5 results)

  • [Journal Article] Preferential delivery of lipid-ligand conjugated DNA/RNA heteroduplex oligonucleotide to ischemic brain in hyperacute stage2023

    • Author(s)
      Fuying Li , Keiko Ichinose, Satoru Ishibashi, Syunsuke Yamamoto, Eri Iwasawa , Motohiro Suzuki, Kie Yoshida-Tanaka , Kotaro Yoshioka , Tetsuya Nagata , Hideki Hirabayashi, Kaoru Mogushi, Takanori Yokota
    • Journal Title

      Molecular therapy

      Volume: 31 Issue: 4 Pages: 1106-1122

    • DOI

      10.1016/j.ymthe.2023.01.016

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effective silencing of miR-126 after ischemic stroke by means of intravenous α-tocopherol?conjugated heteroduplex oligonucleotide in mice2021

    • Author(s)
      Suzuki Motohiro、Ishibashi Satoru、Iwasawa Eri、Oguma Takahiro、Saito Yasuhiro、Li Fuying、Otsu Shinichi、Ichinose Keiko、Yoshioka Kotaro、Nagata Tetsuya、Yokota Takanori
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 14237-14237

    • DOI

      10.1038/s41598-021-93666-y

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Convexity subarachnoid hemorrhage soon after starting a direct oral anticoagulant in 2 patients with acute infarction.2020

    • Author(s)
      Sugita Y, Nichida Y, Ishibashi S, Yokota T.
    • Journal Title

      J Stroke Cerebrovasc Dis.

      Volume: 29 Issue: 11 Pages: 105216-105216

    • DOI

      10.1016/j.jstrokecerebrovasdis.2020.105216

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dupilumab for atopic dermatitis, a possible risk factor of juvenile ischemic stroke: a case report.2020

    • Author(s)
      Iwase R, Ishiguro T, Fujita K, Ishibashi S, Yokota T.
    • Journal Title

      J Stroke Cerebrovasc Dis.

      Volume: 29 Issue: 6 Pages: 104763-104763

    • DOI

      10.1016/j.jstrokecerebrovasdis.2020.104763

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Recurrent stroke due to quasi-moyamoya disease associated with POEMS syndrome: An autopsy case2020

    • Author(s)
      Sekiguchi T, Ishibashi S, Sasame J, Mukae JI, Noda K, Tanaka H, Yamamoto K, Takemoto Y, Kumagai J, Yokota
    • Journal Title

      J Neurol Sci

      Volume: 412 Pages: 116738-116738

    • DOI

      10.1016/j.jns.2020.116738

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Preferential delivery of lipid-ligand conjugated DNA/RNA heteroduplex oligonucleotide to ischemic brain in hyperacute stage2023

    • Author(s)
      Keiko Ichinose,Fuying Li , Satoru Ishibashi, Eri Iwasawa , Motohiro Suzuki, Kie Yoshida-Tanaka , Kotaro Yoshioka , Tetsuya Nagata , Kaoru Mogushi, Takanori Yokota
    • Organizer
      日本神経学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 脳梗塞におけるヘテロ二本鎖核酸による脳血管内皮細胞特異的microRNAの制御2021

    • Author(s)
      鈴木基弘
    • Organizer
      日本脳卒中学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 脳梗塞超急性期モデルマウスにおけるヘテロ核酸の虚血部位選択的デリバリー並びに遺伝子抑制効果2021

    • Author(s)
      李 富瑩
    • Organizer
      日本脳卒中学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 多発性脳梗塞、椎骨動脈解離、両側内頸動脈瘤など多彩な病変を呈した新規COL4A2変異が疑われた一例2021

    • Author(s)
      石黒 太郎
    • Organizer
      日本脳卒中学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Therapeutic strategies promoting collateral circulation2020

    • Author(s)
      Satoru Ishibashi
    • Organizer
      第61回日本神経学会学術大会
    • Related Report
      2020 Research-status Report

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

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