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Development of innovative nucleic acid therapy enabling any gene control in cardiac and skeletal muscle

Research Project

Project/Area Number 19H01016
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 47:Pharmaceutical sciences and related fields
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Nagata Tetsuya  東京医科歯科大学, 大学院医歯学総合研究科, プロジェクト准教授 (50362976)

Co-Investigator(Kenkyū-buntansha) 原 倫太朗  東京医科歯科大学, 大学院医歯学総合研究科, プロジェクト講師 (70709766)
横田 隆徳  東京医科歯科大学, 大学院医歯学総合研究科, 教授 (90231688)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥45,760,000 (Direct Cost: ¥35,200,000、Indirect Cost: ¥10,560,000)
Fiscal Year 2021: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Fiscal Year 2020: ¥13,780,000 (Direct Cost: ¥10,600,000、Indirect Cost: ¥3,180,000)
Fiscal Year 2019: ¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000)
Keywordsヘテロ核酸 / 心筋 / 骨格筋 / 遺伝性筋疾患 / 脂質リガンド / 筋疾患 / エクソン・スキッピング / 核酸医薬 / カヘキシア / スキッピング
Outline of Research at the Start

ヘテロ核酸は既存の核酸医薬とその分子構造・作用機構が異なる第3の核酸医薬で、既存の核酸医薬の10倍以上の有効性を有する画期的な日本発の基盤技術である。標的に結合するアンチセンス核酸にリガンドをつける必要がなく汎用性が高い。更に心臓・骨格筋で非常に高い効果と持続性を証明しており、その有効性のメカニズムを解明しつつ、新たなリガンドを用いて安全かつ心臓・骨格筋特異性の高い任意の遺伝子制御を可能とする革新的な核酸医薬の開発を行う。

Outline of Final Research Achievements

Cholesterol-conjugated heteroduplex oligonucleotide (HDO)with gapmer-type ASO have achieved a 3-7-fold increase of gene knockdown effect in cardiac and skeletal muscle by systemic administration compared to ASO alone. In addition, the gene knockdown was less than 50% for 4-6 months after a single administration, indicating an overwhelmingly long period of gene suppression. Subcutaneous administration has shown sufficient gene suppression. We also have synthesized new lipid ligands and screened them, and found that some ligands are as effective as cholesterol. HDO with splice-switching oligonucleotides (SSO) also have improved the pharmacokinetics (PK) in blood, heart, and skeletal muscle, and the skipping was also increased in accordance with the improvement of PK.

Academic Significance and Societal Importance of the Research Achievements

これまでアンチセンス核酸で正常の心筋・骨格筋で遺伝子抑制効果が弱かったが、今回の開発でより遺伝子効果が強く、持続時間が長いヘテロ核酸の開発に成功している。また新たに同等の効果を持つ、リガンドも獲得した。またスキッピングでも従来の核酸では心筋・横隔膜での効果が弱いことが難点であったが、それを克服したヘテロ核酸を創生した。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Comments on the Screening Results
  • Research Products

    (8 results)

All 2021 2020

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (1 results) (of which Invited: 1 results)

  • [Journal Article] DNA/RNA heteroduplex oligonucleotide technology for regulating lymphocytes in vivo2021

    • Author(s)
      Ohyagi Masaki、Nagata Tetsuya、Ihara Kensuke、Yoshida-Tanaka Kie、Nishi Rieko、Miyata Haruka、Abe Aya、Mabuchi Yo、Akazawa Chihiro、Yokota Takanori
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 7344-7344

    • DOI

      10.1038/s41467-021-26902-8

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cholesterol-functionalized DNA/RNA heteroduplexes cross the blood-brain barrier and knock down genes in the rodent CNS.2021

    • Author(s)
      Nagata T, Dwyer CA, Yoshida-Tanaka K, Ihara K, Ohyagi M, Kaburagi H, Miyata H, Ebihara S, Yoshioka K, Ishii T, Miyata K, Miyata K, Powers B, Igari T, Yamamoto S, Arimura N, Hirabayashi H, Uchihara T, Hara RI, Wada T, Bennett CF, Seth PP, Rigo F, Yokota T
    • Journal Title

      Nat Biotechnol

      Volume: 39 Issue: 12 Pages: 1529-1536

    • DOI

      10.1038/s41587-021-00972-x

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Short DNA/RNA heteroduplex oligonucleotide interacting proteins are key regulators of target gene silencing2021

    • Author(s)
      Asada Ken、Sakaue Fumika、Nagata Tetsuya、Zhang Ji-chun、Yoshida-Tanaka Kie、Abe Aya、Nawa Makiko、Nishina Kazutaka、Yokota Takanori
    • Journal Title

      Nucleic Acids Research

      Volume: 49 Issue: 9 Pages: 4864-4876

    • DOI

      10.1093/nar/gkab258

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Separation-related rapid nuclear transport of DNA/RNA heteroduplex oligonucleotide: unveiling distinctive intracellular trafficking2021

    • Author(s)
      Ono Daisuke、Asada Ken、Yui Daishi、Sakaue Fumika、Yoshioka Kotaro、Nagata Tetsuya、Yokota Takanori
    • Journal Title

      Molecular Therapy - Nucleic Acids

      Volume: 23 Pages: 1360-1370

    • DOI

      10.1016/j.omtn.2020.11.022

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structural tuning of oligonucleotides for enhanced blood circulation properties of unit polyion complexes prepared from two-branched poly(ethylene glycol)-block-poly(l-lysine)2021

    • Author(s)
      Naito Mitsuru、Chaya Hiroyuki、Toh Kazuko、Kim Beob Soo、Hayashi Kotaro、Fukushima Shigeto、Nagata Tetsuya、Yokota Takanori、Kataoka Kazunori、Miyata Kanjiro
    • Journal Title

      Journal of Controlled Release

      Volume: 330 Pages: 812-820

    • DOI

      10.1016/j.jconrel.2021.01.001

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Efficient Gene Suppression by DNA/DNA Double-Stranded Oligonucleotide In?Vivo2021

    • Author(s)
      Asami Yutaro、Nagata Tetsuya、Yoshioka Kotaro、Kunieda Taiki、Yoshida-Tanaka Kie、Bennett C. Frank、Seth Punit P.、Yokota Takanori
    • Journal Title

      Molecular Therapy

      Volume: 29 Issue: 2 Pages: 838-847

    • DOI

      10.1016/j.ymthe.2020.10.017

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] デュシャンヌ型筋ジストロフィーに対する核酸医薬2020

    • Author(s)
      永田哲也
    • Organizer
      第38回日本神経治療学会学術大会
    • Related Report
      2020 Annual Research Report
    • Invited

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Published: 2019-04-18   Modified: 2025-03-27  

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