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Fabrication of 3D-normal and arteriosclerosis blood vessel wall model containing high density extracelluar matrix

Research Project

Project/Area Number 17H06823
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Biomedical engineering/Biomaterial science and engineering
Research InstitutionOsaka University

Principal Investigator

Nakatsuji Hirotaka  大阪大学, 工学研究科, 特任研究員(常勤) (70806504)

Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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組織工学 / 細胞外マトリックス / マイクロファイバー / 血管 / 三次元培養組織 / 細胞工学 / 三次元組織 / 血管壁 / 三次元培養 / 組織モデル / 動脈硬化 / 平滑筋細胞 / バイオテクノロジー / 細胞・組織 / 循環器・高血圧 / 蛋白質 / 自己組織化
Outline of Final Research Achievements

Aorta wall has multi-layer structure composed of endothelial cells, smooth muscle cells and extracellular matrix (ECM). Construction of the structure in vitro is still key challenge in tissue engineering. It is being expected to contribute to high throughput drug screening and investigation of the mechanism of vascular disease such as arteriosclerosis. In this study, we prepared ECM microfiber by fragmentation of ECM and co-cultured it with smooth muscle cells to construct 3D culture tissue, which has high ECM density similar to natural aorta wall. In addition, we confirmed that we could construct 3D blood vessel wall model consist of endothelial layer and smooth muscle cell layer by seeding endothelial cells on the 3D culture tissue.

Academic Significance and Societal Importance of the Research Achievements

過去の研究において、複数層の平滑筋細胞と一層の内皮細胞層からなる三次元組織の構築法等が報告されている。しかし、これらの方法はECM密度が低く、実際の血管壁におけるECM密度(乾燥重量:70%)と大きく異なるという課題があった。ECM成分の構成比は、動脈硬化などの進展に関わることが報告されており、ECM環境を再現することはモデル構築において非常に重要である。本研究で構築された三次元組織は、高いECM密度を持ちまた多層構造も再現している。そのため、細胞-細胞・細胞-ECM間相互作用を含む総合的な評価が可能であり、薬剤試験や病態研究への貢献が期待される。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • Research Products

    (5 results)

All 2019 2018 2017

All Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] 免疫細胞の浸潤機構を再現可能な生体外血管壁モデルの構築2019

    • Author(s)
      中辻 博貴、 松崎 典弥
    • Organizer
      第68回高分子学会年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Extracellular Matrix paper (ECM-paper) for Construction of Multi-layered Blood Vessel Wall tissues2018

    • Author(s)
      Hirotaka Nakatsuji, Michiya Matsusaki
    • Organizer
      Society for biomaterials 2018 annual meeting
    • Related Report
      2018 Annual Research Report
  • [Presentation] Extracellular matrix fiber paper for construction of multi-layered 3D-tissue2018

    • Author(s)
      Hirotaka Nakatsuji, Michiya Matsusaki
    • Organizer
      第67回高分子学会討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 細胞及び細胞外マトリックス密度を制御可能な血管壁モデルの構築2018

    • Author(s)
      中辻 博貴、松崎 典弥
    • Organizer
      Symposium on New Technology for Cell-based Drug Assay
    • Related Report
      2017 Annual Research Report
  • [Presentation] Fabrication of 3D-Blood Vessel Wall Models Using Collagen Microfibers2017

    • Author(s)
      Hirotaka Nakatsuji、Michiya Matsusaki
    • Organizer
      The first International Workshop by the 174th Committee JSPS on Symbiosis of Biology and Nanodevices
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

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Published: 2017-08-25   Modified: 2020-03-30  

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