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Molecular design for in vivo delivery of antibodies targeting intracellular antigens

Research Project

Project/Area Number 21H04794
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 InstitutionKyoto University

Principal Investigator

Futaki Shiroh  京都大学, 化学研究所, 教授 (50199402)

Co-Investigator(Kenkyū-buntansha) 樋口 ゆり子  京都大学, 薬学研究科, 教授 (40402797)
Project Period (FY) 2021-04-05 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥42,510,000 (Direct Cost: ¥32,700,000、Indirect Cost: ¥9,810,000)
Fiscal Year 2023: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Fiscal Year 2022: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Fiscal Year 2021: ¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
KeywordsL17E / 抗体 / 細胞内送達 / 液滴 / コアセルベート / 一本鎖抗体
Outline of Research at the Start

疾病関連タンパク質と高い親和性を有する抗体が医薬品として広く用いられている。現在市販されている抗体医薬品は、血中あるいは細胞表面のタンパク質を標的とするものがほとんどである。細胞内には種々の疾病関連タンパク質が存在する。抗体がこれらのタンパク質を標的とすることが出来れば、抗体医薬品の適用範囲は大きく広がる。本研究では、細胞内送達ペプチドを用いることで、生体での抗体の細胞内送達を達成する条件を探る。

Outline of Final Research Achievements

Antibodies have the ability to recognize specific molecules in the body, and significant therapeutic benefits have been achieved by using antibodies as drugs that bind to disease-related proteins. Although there are many disease-related proteins in cells, antibodies cannot cross cell membranes, which hinders the development of antibody drugs. In this study, we demonstrated that (i) by mixing a chemically modified antibody with the multimers or polysaccharide conjugates of L17E, spherical complexes with a diameter of about 2 micrometers (coacervate) are formed, and (ii) a steep influx of the antibody into cells was observed by cellular contact of the coacervates.

Academic Significance and Societal Importance of the Research Achievements

化学修飾した抗体とL17E等の細胞内導入ペプチドの多量体や架橋体がコアセルベートを形成し、高効率で細胞内に抗体を移送出来ることは、従来の概念では考えられなかった画期的な現象である。この移送を可能とするペプチドの物性や細胞側の要因を探ることで、抗体に限らず細胞内への導入が困難な種々の医薬品に適用可能な新しい細胞内送達法が開発への展開が期待される。

Report

(4 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Comments on the Screening Results   Annual Research Report
  • Research Products

    (21 results)

All 2023 2022 2021 Other

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (12 results) (of which Int'l Joint Research: 4 results,  Invited: 12 results) Remarks (3 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Artificial Nanocage Formed via Self-Assembly of β-Annulus Peptide for Delivering Biofunctional Proteins into Cell Interiors2022

    • Author(s)
      Sakamoto Kentarou、Furukawa Hiroto、Arafiles Jan Vincent V.、Imanishi Miki、Matsuura Kazunori、Futaki Shiroh
    • Journal Title

      Bioconjugate Chemistry

      Volume: 33 Issue: 2 Pages: 311-320

    • DOI

      10.1021/acs.bioconjchem.1c00534

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] L17ER4: A cell-permeable attenuated cationic amphiphilic lytic peptide2022

    • Author(s)
      Shinga Kenta、Iwata Takahiro、Murata Kazuya、Daitoku Yoko、Michibata Junya、Arafiles Jan Vincent V.、Sakamoto Kentarou、Akishiba Misao、Takatani-Nakase Tomoka、Mizuno Seiya、Sugiyama Fumihiro、Imanishi Miki、Futaki Shiroh
    • Journal Title

      Bioorganic & Medicinal Chemistry

      Volume: 61 Pages: 116728-116728

    • DOI

      10.1016/j.bmc.2022.116728

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Split luciferase-based estimation of cytosolic cargo concentration delivered intracellularly via attenuated cationic amphiphilic lytic peptides2022

    • Author(s)
      Okano Syusuke、Kawaguchi Yoshimasa、Kawano Kenichi、Hirose Hisaaki、Imanishi Miki、Futaki Shiroh
    • Journal Title

      Bioorganic & Medicinal Chemistry Letters

      Volume: 72 Pages: 128875-128875

    • DOI

      10.1016/j.bmcl.2022.128875

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 液-液相分離を誘起する高分子細胞内送達ペプチド2022

    • Author(s)
      二木史朗、広瀬久昭
    • Journal Title

      MEDCHEM NEWS

      Volume: 32 Pages: 149-153

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Liquid Droplet Formation and Facile Cytosolic Translocation of IgG in the Presence of Attenuated Cationic Amphiphilic Lytic Peptides2021

    • Author(s)
      Iwata T, Hirose H, Sakamoto K, Hirai Y, Arafiles JVV, Akishiba M, Imanishi M, Futaki S
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 60 Issue: 36 Pages: 19804-19812

    • DOI

      10.1002/anie.202105527

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Attenuated Cationic Lytic Peptides for Intracellular Delivery2023

    • Author(s)
      Shiroh Futaki
    • Organizer
      9th Indian Peptide Symposium
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Attenuated Membrane-lytic Peptides for Intracellular Delivery2022

    • Author(s)
      Shiroh Futaki
    • Organizer
      Frontiers in Peptide Science and Drug Discovery
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Attenuated cationic lytic peptides for intracellular delivery2022

    • Author(s)
      Shiroh Futaki
    • Organizer
      36th European and 12th International Peptide Symposium
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 膜と相互作用する機能性ペプチド2022

    • Author(s)
      二木史朗
    • Organizer
      第30回ケムステVシンポ「世界に羽ばたく日本の化学研究」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 抗体・機能性タンパク質の細胞内送達に向けて2022

    • Author(s)
      二木史朗
    • Organizer
      第72回日本薬学会関西支部大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Peptides that affect membrane structure and permeability2022

    • Author(s)
      Shiroh Futaki
    • Organizer
      第59回ペプチド討論会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] ペプチドと膜の動的相互作用2022

    • Author(s)
      二木史朗
    • Organizer
      膜シンポジウム2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 抗体・機能性タンパク質の細胞内送達に向けて2022

    • Author(s)
      二木史朗
    • Organizer
      第1回次世代モダリティセミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 細胞膜の脂質パッキングと細胞内送達2021

    • Author(s)
      二木史朗
    • Organizer
      第37回日本DDS学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Amphiphilic peptides to alter cell membrane structure and permeability2021

    • Author(s)
      Shiroh Futaki
    • Organizer
      The 2021 International Chemical Congress of Pacific Basin Societies (Pacifichem 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Attenuated membrane-lytic peptides for intracellular delivery2021

    • Author(s)
      Shiroh Futaki
    • Organizer
      The 2021 International Chemical Congress of Pacific Basin Societies (Pacifichem 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 抗体・機能性タンパク質の細胞内送達に向けて2021

    • Author(s)
      二木史朗
    • Organizer
      第151回 医工学フォーラム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Remarks] 二木研究室

    • URL

      https://www.scl.kyoto-u.ac.jp/~bfdc/index.html

    • Related Report
      2022 Annual Research Report
  • [Remarks] 抗体を液滴に濃縮し細胞内へ高速輸送

    • URL

      https://www.kuicr.kyoto-u.ac.jp/sites/topics/20210805/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 抗体を液滴に濃縮し細胞内へ高速輸送

    • URL

      https://www.kyoto-u.ac.jp/ja/research-news/2021-08-06-1

    • Related Report
      2021 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 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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