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Treatment of lymphedema with super microsurgery and bio-3D printing technique

Research Project

Project/Area Number 17K11533
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Plastic surgery
Research InstitutionNagasaki University

Principal Investigator

TAKAGI Katsunori  長崎大学, 医歯薬学総合研究科(医学系), 客員研究員 (90635856)

Co-Investigator(Kenkyū-buntansha) 山下 修二  東京大学, 医学部附属病院, 助教 (30457220)
永安 武  長崎大学, 医歯薬学総合研究科(医学系), 教授 (80284686)
吉田 周平  広島大学, 病院国際リンパ浮腫治療センター, 准教授 (80380921)
松本 桂太郎  長崎大学, 医歯薬学総合研究科(医学系), 講師 (80404268)
中山 功一  佐賀大学, 医学部, 教授 (50420609)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords尿管 / リンパ管 / 再生医療 / バイオ3Dプリンティング / 蠕動能 / 再生 / バイオプリンティング / 外科 / 再生医学 / 細胞・組織 / リンパ浮腫
Outline of Final Research Achievements

We developed a scaffold-free artificial ureter structure using a bio-three-dimensional (3D) printing technique and assessed its characteristics in vivo after transplantation into rat ureters.
Of the transplantation sites, 50% revealed slight contraction of the artificial ureter structure. Differences in diameter between the proximal and distal ureter boundary of the artificial ureter revealed that the proximal ureter were wider but varied in degree. Hydronephrosis was seen in 83% of rats with 50% of the rats showing grade I and 17% showing grade 0. This is a novel report about ureter regeneration using a living cell structure. Artificial ureter structures created using bio-3D printing could be used for ureter regeneration but further study is required to develop high-functioning artificial ureters that will not develop hydronephrosis.

Academic Significance and Societal Importance of the Research Achievements

リンパ管のみならず、尿管やその他の蠕動する管腔臓器の再生は蠕動に耐える構造体の強度が求められる。リンパ浮腫に対するリンパ管再生とともに、先天性水腎症や外傷性、医原性の尿管損傷などもあり、尿管再生は重要な研究分野である。今まで、尿管再生は生体分解性化合物が主であったが、今回バイオ3Dプリンティングによる生細胞のみ尿管再生を試み、可能であることが示唆された。将来iPS細胞等の自己細胞による尿管再生を期待させる結果である。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (3 results)

All 2020 2019

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] ヒト細胞のみで作成した3次元構造体による尿管の再生2020

    • Author(s)
      高木克典
    • Organizer
      第120回日本外科学会定期学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Regeneration of the ureter using a scaffold-free human cell structure created using a bio-three-dimensional printing technique in a rat model.2020

    • Author(s)
      Katsunori Takagi
    • Organizer
      European Rediatric Surgeon's Association 2020 Annual Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 3Dプリンティング技術を用いた蠕動能を有する管腔構造物(ラット尿管)の再生2019

    • Author(s)
      高木克典
    • Organizer
      日本再生医療学会
    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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