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Novel innovations in cytoplasmic delivery peptides directed at intracellular delivery of antibodies

Research Project

Project/Area Number 22K15250
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 47010:Pharmaceutical chemistry and drug development sciences-related
Research InstitutionKyoto University

Principal Investigator

Kawaguchi Yoshimasa  京都大学, 化学研究所, 助教 (90936808)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2022: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordsペプチド / 抗体 / 細胞内送達 / 細胞質 / 膜傷害性ペプチド / コンジュゲート / エンドサイトーシス / エンドソーム脱出 / 細胞内導入ペプチド / 高分子送達 / タンパク質 / 細胞内取込み / in vivo / 細胞質送達ペプチド / ターゲティング
Outline of Research at the Start

抗体は、高難度標的を制御可能な分子として着目されているが、細胞膜透過性に乏しく、細胞内を標的にできないことから、in vivoにも応用可能な細胞質送達技術の確立が望まれている。当研究室では、抗体と混合することで、抗体の効率的な細胞質送達を可能にする細胞質送達ペプチドを開発している。本研究では、細胞質送達ペプチドのin vivo展開に向けた分子設計によって、in vivoにおける細胞内分子の機能制御に挑戦する。

Outline of Final Research Achievements

In this study, we developed E3MPH16, which has a wide safety margin and highly efficient cytosolic delivery derived from mastoparan X, and showed that anti-Ras antibody delivered by E3MPH16 into HT1080 cells inhibited their growth. Furthermore, topical administration of NLS-EGFP and E3MPH16 to tumor-bearing mice showed that NLS-EGFP could be delivered to the cytosol in some cells. We also examined the preparation of conjugates of L17ER4, an intracellular delivery peptide, with antibodies. We showed that the conjugates could be prepared by the enzyme-chemical method using sortase, and the antibodies could be delivered to the cytosol without aggregation. The application of the conjugation method to various peptides will lead to more efficient cytosolic delivery of antibodies and will be a fundamental technology in vivo delivery, and it is expected to lead to practical drug discovery research efforts in the future.

Academic Significance and Societal Importance of the Research Achievements

今回開発したE3MPH16は低毒性かつ高効率で高分子を細胞質に送達可能なペプチドであることから、機能性高分子の細胞質送達に有用であると考えられる。また、in vivoでも送達可能であったことから、今後、抗体の細胞質送達による細胞機能制御への展開が期待される。また、L17E4と抗体のコンジュゲート設計を達成したことから、このコンジュゲーション方法を様々なペプチドに応用することで、より効率的な抗体の細胞質送達につながるとともに、in vivoでのデリバリーにおける基盤技術になると考えられ、今後、創薬研究への実践的取り組みにつながると期待される。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (14 results)

All 2024 2023 2022

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (9 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Patent(Industrial Property Rights) (3 results) (of which Overseas: 1 results)

  • [Journal Article] Liquid Droplet-Mediated Formulation of Lipid Nanoparticles Encapsulating Immunoglobulin G for Cytosolic Delivery2024

    • Author(s)
      Hirai Yusuke、Kawaguchi Yoshimasa、Kasahara Chisato、Hirose Hisaaki、Futaki Shiroh
    • Journal Title

      Molecular Pharmaceutics

      Volume: 21 Issue: 4 Pages: 1653-1661

    • DOI

      10.1021/acs.molpharmaceut.3c00868

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] E3MPH16: An efficient endosomolytic peptide for intracellular protein delivery2024

    • Author(s)
      Kawaguchi Yoshimasa、Kawamura Yuki、Hirose Hisaaki、Kiyokawa Megumi、Hirate Momo、Hirata Tsuyoshi、Higuchi Yuriko、Futaki Shiroh
    • Journal Title

      Journal of Controlled Release

      Volume: 367 Pages: 877-891

    • DOI

      10.1016/j.jconrel.2024.01.067

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Presentation] 抗体の細胞質送達に向けた抗体ーL17ER4コンジュゲートの創製2024

    • Author(s)
      寺田 旺之、川口 祥正、二木 史朗
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 低毒性かつ高効率な新規高分子細胞質送達ペプチドの創製2024

    • Author(s)
      川口 祥正、川村 優貴、清川 めぐみ、広瀬 久昭、樋口 ゆり子、二木 史朗
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Development of a Novel Endosomolytic Peptide for Cytosolic Delivery of Proteins2023

    • Author(s)
      Yoshimasa Kawaguchi
    • Organizer
      Satellite Symposium of the 60th Japanese Peptide Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of cytosolic delivery peptides by attenuated membrane lytic activity2023

    • Author(s)
      Yoshimasa Kawaguchi, Shiroh Futaki
    • Organizer
      第61回日本生物物理学会年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Development of a Novel Cytosolic Delivery Peptide with Attenuated Cytotoxicity and Enhanced Endosomal Uptake2023

    • Author(s)
      Yoshimasa Kawaguchi, Shiroh Futaki
    • Organizer
      13th International Peptide Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of an Efficient Endosomolytic Peptide for Intracellular Protein Delivery2023

    • Author(s)
      Yoshimasa Kawaguchi, Shiroh Futaki
    • Organizer
      13th Austrian Peptide Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Elucidation of the Cellular Delivery Mechanism of Melittin Derivatives2023

    • Author(s)
      Yusuke Uehata, Yoshimasa Kawaguchi, Naoki Tamemoto, Shiroh Futaki
    • Organizer
      The 60th Japanese Peptide Symposium
    • Related Report
      2023 Annual Research Report
  • [Presentation] DEVELOPMENT OF MELITTIN DELIVATIVES FOR INTRACELLULAR DELIVERY OF BIOMACROMOLECULES2022

    • Author(s)
      Yoshimasa Kawaguchi, Naoki Tamemoto, Masataka Fumoto, Shiroh Futaki
    • Organizer
      第59回ペプチド討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] 生理活性物質の細胞内送達に向けたMelittin誘導体の創製2022

    • Author(s)
      川口祥正、為本尚樹、麓昌高、二木史朗
    • Organizer
      第43回生体膜と薬物の相互作用シンポジウム
    • Related Report
      2022 Research-status Report
  • [Patent(Industrial Property Rights)] 脂質ナノ粒子、医薬組成物、および脂質ナノ粒子の製造方法2024

    • Inventor(s)
      二木史朗 、平井勇祐 、川口祥正、広瀬久昭、笠原千聖
    • Industrial Property Rights Holder
      二木史朗 、平井勇祐 、川口祥正、広瀬久昭、笠原千聖
    • Industrial Property Rights Type
      特許
    • Filing Date
      2024
    • Related Report
      2023 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] 細胞質送達ペプチド2023

    • Inventor(s)
      川口祥正、二木史朗
    • Industrial Property Rights Holder
      川口祥正、二木史朗
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2023-174558
    • Filing Date
      2023
    • Related Report
      2023 Annual Research Report
  • [Patent(Industrial Property Rights)] 薬物送達組成物2023

    • Inventor(s)
      二木史朗、平井勇祐、広瀬久昭、川口祥正
    • Industrial Property Rights Holder
      二木史朗、平井勇祐、広瀬久昭、川口祥正
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2023-031510
    • Filing Date
      2023
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2025-01-30  

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