• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Cardiac electrophysiology evaluation system for improved drug assessment

Research Project

Project/Area Number 22K12801
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionOsaka University

Principal Investigator

LI JUNJUN  大阪大学, 大学院工学研究科, 特任准教授(常勤) (10723786)

Co-Investigator(Kenkyū-buntansha) 劉 莉  大阪大学, 大学院医学系研究科, 特任准教授 (50380093)
Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2024: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
KeywordsiPSC / Cardiomyocytes / Drug assessment / Tissue engineering / pluripotent stem cells / maturation / drug assessment / cardiomyocytes / regenerative medicine / Pluripotent stem cells / Maturation
Outline of Research at the Start

ヒトiPS細胞由来の心筋細胞は再生医療への応用だけではなく、創薬や薬剤毒性評価への応用にも期待されている。しかし、既存の心筋細胞分化誘導法で得られた心筋細胞はまだ未熟であるため、創薬への応用に十分満たされていない。本研究課題において、自発循環進行波を利用して、未熟な心筋細胞の成熟度を加速させ、最終的に成人と近いレベルの心筋細胞を獲得し、心筋毒性評価や創薬への応用を実現することを目指している。さらに、ドラックスクリーニングの応用に合わせ、自発性循環進行波現象を誘導するデバイスを融合したMulti-wells多電極システムを開発し、ハイスループットスクリーニング可能なシステムの開発を目指す。

Outline of Final Research Achievements

In this study, stable traveling waves were successfully and efficiently reproduced in a 24-well plate using a newly designed device and were stably maintained for over 14 days. The maturation of iPSC-derived cardiomyocytes paced by the waves was confirmed through immunostaining, electrophysiological recording, RNA sequencing, TEM, OCR, western blotting, and motion analysis. Drug responses were evaluated using compounds with varying levels of Torsades de Pointes (TdP) risk: low-risk drugs (verapamil, ranolazine) showed low arrhythmia rates, while high- and intermediate-risk drugs (quinidine, pimozide) increased arrhythmia incidence, demonstrating the system’s utility in drug safety assessment. As outcomes, one PCT patent was filed, four papers were published, and one oral presentation was given at an conference. This presentation received the 21st Young Investigator’s Award for International Students.

Academic Significance and Societal Importance of the Research Achievements

最近、FDAはモノクローナル抗体などの医薬品に対する動物実験の義務を段階的に廃止する方針を示しました。iPSC由来の心臓オルガノイドは動物実験の代替として期待され、薬剤毒性評価の新しいプラットフォームとなります。しかし、iPSC由来心筋細胞の未成熟性が薬剤応答の精度を制限する課題があります。我々のシステムは心筋細胞の成熟を促進し、より正確な薬剤応答を実現しました。これにより、PMDAによる偽陽性薬剤候補の誤却下を減らし、創薬の効率向上とコスト削減に貢献します。また、動物実験削減という倫理的課題にも応え、持続可能な医療社会の実現に寄与する技術です。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (8 results)

All 2024 2023 2022

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (1 results) (of which Invited: 1 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Journal Article] Human induced pluripotent stem cell-derived closed-loop cardiac tissue for drug assessment2024

    • Author(s)
      Li Junjun、Hua Ying、Liu Yuting、Qu Xiang、Zhang Jingbo、Ishida Masako、Yoshida Noriko、Tabata Akiko、Miyoshi Hayato、Shiba Mikio、Higo Shuichiro、Sougawa Nagako、Takeda Maki、Kawamura Takuji、Matsuura Ryohei、Okuzaki Daisuke、Toyofuku Toshihiko、Sawa Yoshiki、Liu Li、Miyagawa Shigeru
    • Journal Title

      iScience

      Volume: 27 Issue: 2 Pages: 108992-108992

    • DOI

      10.1016/j.isci.2024.108992

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Label-Free Raman Spectroscopy for Assessing Purity and Maturation of hiPSC-Derived Cardiac Tissue2024

    • Author(s)
      Li Junjun、Li Menglu、Nawa Yasunori、Liu Yuting、Bando Kazuki、Hua Ying、Sun Lifu、Fujita Satoshi、Sawa Yoshiki、Fujita Katsumasa、Liu Li
    • Journal Title

      Analytical Chemistry

      Volume: 96 Issue: 39 Pages: 15765-15772

    • DOI

      10.1021/acs.analchem.4c03871

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Modeling Reduced Contractility and Stiffness Using iPSC-Derived Cardiomyocytes Generated From Female Becker Muscular Dystrophy Carrier2023

    • Author(s)
      Kameda Satoshi、Higo Shuichiro、Shiba Mikio、Kondo Takumi、Li Junjun、Liu Li、Tabata Tomoka、Inoue Hiroyuki、Okuno Shota、Ogawa Shou、Kuramoto Yuki、Yasutake Hideki、Lee Jong-Kook、Takashima Seiji、Ikeda Yoshihiko、Hikoso Shungo、Miyagawa Shigeru、Sakata Yasushi
    • Journal Title

      JACC: Basic to Translational Science

      Volume: - Issue: 6 Pages: 599-613

    • DOI

      10.1016/j.jacbts.2022.11.007

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Restoration of Cardiac Myosin Light Chain Kinase Ameliorates Systolic Dysfunction by Reducing Superrelaxed Myosin2023

    • Author(s)
      Hitsumoto T, Tsukamoto O, Matsuoka K, Li J, Liu L, Kuramoto Y, Higo S, Ogawa S, Fujino N, Yoshida S, Kioka H, Kato H, Hakui H, Saito Y, Okamoto C, Inoue H, Hyejin J, Ueda K, Segawa T, Nishimura S, Asano Y, Asanuma H, Tani A, Imamura R, Komagawa S, Kanai T, Takamura M, Sakata Y, Kitakaze M, Haruta JI, Takashima S.
    • Journal Title

      Circulation

      Volume: - Issue: 25 Pages: 1902-1918

    • DOI

      10.1161/circulationaha.122.062885

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tissue Sheet Engineered Using Human Umbilical Cord-Derived Mesenchymal Stem Cells Improves Diabetic Wound Healing2022

    • Author(s)
      Zhang Jingbo、Qu Xiang、Li Junjun、Harada Akima、Hua Ying、Yoshida Noriko、Ishida Masako、Sawa Yoshiki、Liu Li、Miyagawa Shigeru
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 20 Pages: 12697-12697

    • DOI

      10.3390/ijms232012697

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Engineered Tissue for Cardiac Regeneration: Current Status and Future Perspectives2022

    • Author(s)
      Li Junjun、Liu Li、Zhang Jingbo、Qu Xiang、Kawamura Takuji、Miyagawa Shigeru、Sawa Yoshiki
    • Journal Title

      Bioengineering

      Volume: 9 Issue: 11 Pages: 605-605

    • DOI

      10.3390/bioengineering9110605

    • Related Report
      2022 Research-status Report
  • [Presentation] Human iPSC-derived closed-loop cardiac tissue for improved drug assessment2023

    • Author(s)
      Ying Hua, Junjun Li, Xiang Qu, Jingbo Zhang, Masako Ishida, Noriko Yoshida, Hayato Miyoshi, Mikio Shiba3, Shuichiro Higo4,5, Nagako Sougawa1, Maki Takeda1, Takuji Kawamura1, Ryohei Matsuura, Toshihiko Toyofuku, Yoshiki Sawa, Li Liu and Shigeru Miyagawa
    • Organizer
      The 87th Annual Scientific Meeting of the Japanese Circulation Society (JCS2023)
    • Related Report
      2022 Research-status Report
    • Invited
  • [Patent(Industrial Property Rights)] Method for producing myocardial cell layer, myocardial cell layer, and use thereof2024

    • Inventor(s)
      Li Liu, Junjun Li
    • Industrial Property Rights Holder
      Li Liu, Junjun Li
    • Industrial Property Rights Type
      特許
    • Filing Date
      2024
    • Related Report
      2024 Annual Research Report
    • Overseas

URL: 

Published: 2022-04-19   Modified: 2026-01-16  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi