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Construction of three-dimensional vascularized pancreatic tissue using layer-by-layer method

Research Project

Project/Area Number 19K18025
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55010:General surgery and pediatric surgery-related
Research InstitutionOsaka University

Principal Investigator

Takaichi Shohei  大阪大学, 医学部附属病院, 医員 (30804877)

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: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords1型糖尿病 / 膵島移植 / 皮下移植 / iPS細胞 / 交互積層法 / 膵移植再生医療
Outline of Research at the Start

膵組織(インスリン産生細胞)再生医療の実臨床応用へ向けた様々な取り組みが行われているが、細胞積層技術により効率的に3次元血管化膵組織を構築するための方法を立案した。血管化膵組織の構築にあたり、細胞積層技術LbL細胞コート法により作成したスフェロイドを用いた血管膵組織構築が、単一なβ細胞により作成した血管化組織よりも有効であると仮説を立て、検証する方針とした。NHDF、HUVEC、β細胞スフェロイド(MIN6)と共培養を行う事で、スフェロイドの形態維持及び血管網の形成を確認した。研究を更に実臨床の観点より発展させるために、iPSC由来のβ細胞をソースとする方針としている。

Outline of Final Research Achievements

Subcutaneous transplantation is desirable for establishing regenerative medicine as an alternative to pancreas and islet transplantation for patients with type 1 diabetes. However, poor vascularity in the subcutaneous site is burden for success in the transplantation. We investigated the effect of vascularized human induced pluripotent stem cell-derived β-cell (hiPS β-cell) spheroid tissue constructed three-dimensionally using a layer-by-layer cell-coating technique. The vascularized hiPS β-cell spheroid tissue significantly decreased blood glucose levels in diabetic immunodeficient mice when transplanted subcutaneously. Furthermore, host mouse vessels were observed in the explanted vascularized hiPS β-cell spheroid tissue. This therapeutic effect was suggested due to host angiogenesis in the graft.

Academic Significance and Societal Importance of the Research Achievements

本研究は、交互積層法を用いて、細胞の積層化を可能にする技術を利用して、血管構造を伴う3次元ヒト人工多能性幹細胞由来β細胞スフェロイド組織を構築し、糖尿病化免疫不全マウスに同組織の皮下移植を行い、血管構造を伴わない組織の皮下移植マウスに比較し、随時血糖値およびグルコース負荷試験での血糖値が有意に低下したことを報告している。本研究は、同移植法が、安全な移植部位である皮下への新規移植法の開発に有用であり、1型糖尿病患者に対する再生医療の確立に向け、大きな意義を持つと考えられる。

Report

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

    (7 results)

All 2021 2020 2019

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

  • [Journal Article] Three-dimensional Vascularized β-cell Spheroid Tissue Derived From Human Induced Pluripotent Stem Cells for Subcutaneous Islet Transplantation in a Mouse Model of Type 1 Diabetes2021

    • Author(s)
      Takaichi Shohei、Tomimaru Yoshito、Akagi Takami、Kobayashi Shogo、Fukuda Yasunari、Toya Keisuke、Asaoka Tadafumi、Iwagami Yoshifumi、Yamada Daisaku、Akita Hirofumi、Noda Takehiro、Gotoh Kunihito、Doki Yuichiro、Akashi Mitsuru、Eguchi Hidetoshi
    • Journal Title

      Transplantation

      Volume: Publish Ahead of Print Issue: 1 Pages: 48-59

    • DOI

      10.1097/tp.0000000000003745

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Three-dimensional vascularized β-cell spheroid tissue derived from human induced pluripotent stem cells for subcutaneous islet transplantation in a mouse model of type 1 diabetes2021

    • Author(s)
      Shohei Takaichi, Yoshito Tomimaru, Takami Akagi, Shogo Kobayashi, Yoshifumi Iwagami, Daisaku Yamada, Hirofumi Akita, Takehiro Noda, Kunihito Gotoh, Yuichiro Doki, Mitsuru Akashi, Hidetoshi Eguchi
    • Organizer
      Asian Pancreas and Islet Transplant Association (APITA)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 糖尿病化マウスへの三次元血管化iPS細胞由来β細胞スフェロイド組織による皮下移植治療法に関する研究2021

    • Author(s)
      髙市翔平, 富丸慶人, 赤木隆美, 小林省吾, 遠矢圭介, 岩上佳史山田大作, 秋田裕史, 野田剛広, 後藤邦仁, 土岐祐一郎, 明石満
    • Organizer
      第20回日本再生医療学会総会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Construction of three-dimensional vascularized functional β-cells tissues using a layer-by-layer cell coating technique2020

    • Author(s)
      Shohei Takaichi, Takami Akagi, Yoshito Tomimaru, Shogo Kobayashi, Yoshifumi Iwagami, Hirofumi Akita, Takehiro Noda, Kunihito Gotoh, Yuichiro Doki, Mitsuru Akashi, Hidetoshi Eguchi
    • Organizer
      American Transplant Congress (ATC)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Construction of three-dimensional vascularized functional β-cells tissues using a layer-by-layer cell coating technique2020

    • Author(s)
      Shohei Takaichi
    • Organizer
      American Transplant Congress
    • Related Report
      2019 Research-status Report
  • [Presentation] 細胞外マトリックスを用いた交互積層細胞コート法による血管化三次元膵島組織の構築2019

    • Author(s)
      高市翔平
    • Organizer
      第74回日本消化器外科学会総会
    • Related Report
      2019 Research-status Report
  • [Presentation] 細胞外マトリックスを用いた交互積層細胞コート法を用いた血管化三次元膵島組織の構築の試み2019

    • Author(s)
      富丸慶人
    • Organizer
      第55回日本移植学会総会
    • Related Report
      2019 Research-status Report

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

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