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Development of culture method for three-dimensional cardiac tissue derived from induced pluripotent stem cell using rotating wall vessel bioreactor

Research Project

Project/Area Number 19K18179
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55030:Cardiovascular surgery-related
Research InstitutionOsaka University

Principal Investigator

Nakazato Taro  大阪大学, 医学部附属病院, 医員 (50815529)

Project Period (FY) 2019-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
KeywordsiPS / 組織工学 / 回転浮遊培養 / 心不全 / iPS細胞 / Myosin heavy chain 7 / Connexin 43 / 3次元心筋組織
Outline of Research at the Start

次世代の心筋組織開発のポイントは、如何にしてin vitroで重厚な心筋組織を作成し、それをin vitroで培養維持するかだと考えられているが、重厚な組織になればなるほど、維持培養の際の低栄養、低酸素に伴う細胞障害が問題となる。近年、回転浮遊培養装置を用いて従来法では作成困難であった重厚な軟骨組織作成に成功しており、本システムは重厚な心筋組織の維持培養に適していることが予想できる。本研究の目的は、回転浮遊培養システムを用いて、心筋再生治療用の重厚で高機能な移植心筋片を細胞障害なく作成すると同時に、in vivoモデルに移植することにより、同組織の移植心筋片としての有効性を検証することである。

Outline of Final Research Achievements

We made engineered 3D cardiac tissue by seeding human induced pluripotent stem cell derived cardiomyocytes on the fiber sheet. It was cultured in a rotating wall vessel bioreactor (RWV group) or culture dishes for the control, and in vitro assessment was performed. In the RWV group, thicker cardiac tissue was obtained than in the control. Moreover, the RWV group showed significantly higher functionality in contractile and electrophysiological property. After in vitro assessment, these tissues were transplanted to myocardial infarction model nude rats. From 1 week after transplantation, the RWV group showed a significant improvement in cardiac function compared with the other groups.

Academic Significance and Societal Importance of the Research Achievements

本研究は、iPS細胞由来心筋組織を維持培養で成熟させる方法として、回転浮遊培養の可能性を見出したという点で学術的意義がある。本研究で得られた成果によって、広範な不全心に対して力学的補助が期待できるような厚みのある心筋組織の作成の実現可能性は高められ、iPS細胞由来心筋組織のトランスレーショナルリサーチがさらに前進することが期待される。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (3 results)

All 2020

All Presentation (3 results) (of which Int'l Joint Research: 3 results)

  • [Presentation] Dynamic tissue culture in a rotating wall vessel bioreactor yields functional engineered cardiac constructs derived from induced pluripotent stem cells via activated mTOR-related signaling pathway2020

    • Author(s)
      Taro Nakazato, Shigeru Miyagawa, Toshimasa Uemura, Li Liu, Junjun Li, Masao Sasai, Akima Harada, Takayoshi Ueno, Koichi Toda, Toru Kuratani, Yoshiki Sawa
    • Organizer
      ISSCR 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Functional engineered heart tissue cultured in a rotating wall vessel bioreactor improve cardiac function in the distressed rat heart2020

    • Author(s)
      Taro Nakazato, Shigeru Miyagawa, Toshimasa Uemura, Li Liu, Junjun Li, Masao Sasai, Akima Harada, Takayoshi Ueno, Koichi Toda, Toru Kuratani, Yoshiki Sawa
    • Organizer
      ESC Congress 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Engineered three-dimensional cardiac tissues maturated by dynamic culture in a rotating wall vessel bioreactor remodel the diseased heart in the rat infarction model2020

    • Author(s)
      Taro Nakazato, Shigeru Miyagawa, Toshimasa Uemura, Li Liu, Junjun Li, Masao Sasai, Akima Harada, Takayoshi Ueno, Koichi Toda, Toru Kuratani, Yoshiki Sawa
    • Organizer
      AHA Scientific Session 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2022-01-27  

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