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Bioengineering of functional bladder substitute using tissue decellularization and autologous derived bladder cells

Research Project

Project/Area Number 20K17552
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

Deguchi Koichi  大阪大学, 大学院医学系研究科, 助教 (00747082)

Project Period (FY) 2020-04-01 – 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 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords再生医療 / 組織工学 / 膀胱再生 / 細胞外マトリックス / 細胞培養 / 脱細胞化 / 組織脱細胞化 / ヒト膀胱上皮細胞培養 / 組織再生 / 再生膀胱組織
Outline of Research at the Start

総排泄腔外反や神経因性膀胱における尿失禁や上部尿路障害をはじめとする膀胱機能障害は、患者の社会生活に著しい障害をきたす。腸管を利用した膀胱拡大術は、コンプライアンスが低下した膀胱機能障害に対する標準治療であるが、消化管粘膜が尿に曝露されることによる合併症はいまだ解決されていない。本研究では、この問題点を克服する新たな外科的治療法として、同所移植が可能な新規再生膀胱の開発を目的としている。これまでの管腔臓器再生研究の成果を発展させ、自己由来の培養細胞と膀胱由来の生体材料を段階的に組みあわせる。それによって、膀胱に特有の組織形態と機能を持った、再生膀胱組織を開発することを目的とする。

Outline of Final Research Achievements

This study aimed to develop a novel regenerative surgical approach for bladder augmentation without using intestinal segments, targeting patients with bladder dysfunction such as cloacal exstrophy and neurogenic bladder. Bladder tissue derived from juvenile miniature pigs was decellularized to create an extracellular matrix (ECM) scaffold. Human bladder epithelial cells were then recellularized onto the scaffold to construct functional regenerated bladder mucosa. The cultured cells formed a multilayered structure on the decellularized scaffold, and the acquisition of barrier function was confirmed by tight junction protein expression, permeability assays, and transepithelial electrical resistance measurements. These findings demonstrated not only successful cell engraftment but also functional differentiation and maturation, indicating the feasibility of fabricating transplantable functional bladder tissue.

Academic Significance and Societal Importance of the Research Achievements

本研究では、神経因性膀胱や先天的な膀胱機能異常のため、膀胱機能が低下し排尿障害のある患者さんのために、新たな膀胱を再生する技術開発に取り組んだ。現在主流となる膀胱拡大術は、膀胱に腸管組織をあてがうことで膀胱容量の拡大を行うが、腸管組織を使うことの長期的な合併症が問題となっている。我々は、腸を使わずに新たな膀胱を再生する技術の開発に取り組んだ。ブタの膀胱から細胞を取り除いた足場に人の細胞を加えることで、尿をためる機能をもつ膀胱の粘膜を作ることに成功した。将来的には、人工材料に頼らず安全で機能的な再生膀胱の移植が可能となることが期待される。

Report

(6 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (5 results)

All 2022 Other

All Int'l Joint Research (1 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 3 results)

  • [Int'l Joint Research] University College London/Institute of Child Health(英国)

    • Related Report
      2022 Research-status Report
  • [Journal Article] Development of a porcine acellular bladder matrix for tissue-engineered bladder reconstruction2022

    • Author(s)
      Garriboli Massimo、Deguchi Koichi、Totonelli Giorgia、Georgiades Fanourios、Urbani Luca、Ghionzoli Marco、Burns Alan J.、Sebire Neil J.、Turmaine Mark、Eaton Simon、De Coppi Paolo
    • Journal Title

      Pediatric Surgery International

      Volume: 38 Issue: 5 Pages: 665-677

    • DOI

      10.1007/s00383-022-05094-2

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] DEVELOPMENT OF A PORCINE ACELLULAR BLADDER MATRIX SEEDED WITH FUNCTIONAL HUMAN UROTHELIUM FOR TISSUE ENGINEERED BLADDER RECONSTRUCTION2022

    • Author(s)
      Massimo Garriboli, Koichi Deguchi, Ellie Phylactopoulou, Paola Bonfanti, Paolo De Coppi
    • Organizer
      34th International Symposium on Pediatric Surgical Research
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] In vitro expansion of human paediatric urothelial cells amenable to bladder tissue engineering2022

    • Author(s)
      Massimo Garriboli, Koichi Deguchi, Ros Duke, Imran Mushtaq, Jennifer Hinley, Paolo De Coppi, Jennifer Southgate, Paola Bonfanti
    • Organizer
      35th International Symposium on Pediatric Surgical Research
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] In vitro expansion of diseased human paediatric urothelial cells for tissue engineering2022

    • Author(s)
      Massimo Garriboli, Koichi Deguchi, Ros Duke, Imran Mushtaq, Jennifer Hinley, Paolo De Coppi, Jennifer Southgate, Paola Bonfanti
    • Organizer
      35th International Symposium on Pediatric Surgical Research
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2026-01-16  

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