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2014 Fiscal Year Research-status Report

Engineering thick tissues in vivo using oxygen-releasing pro-angiogenic biomaterials

Research Project

Project/Area Number 26750144
Research InstitutionThe University of Tokyo

Principal Investigator

モンターニュ ケヴィン  東京大学, 医学(系)研究科(研究院), 助教 (50606118)

Project Period (FY) 2014-04-01 – 2016-03-31
KeywordsHypoxia / Biomaterials
Outline of Annual Research Achievements

Engineering thick, cell-dense artificial tissues to replace diseased organs has been hindered so far by the difficulty in maintaining the cells alive after implantation due to insufficient oxygen supply. Recently, biomaterials that release oxygen thanks to the incorporation of various peroxides have been used successfully in vitro to supply oxygen to cultured cells, preventing cell death due to hypoxia. However, such materials have so far not been tested for the development of thick (several mm) tissues in vitro or in vivo.
The aim of this research is to create thick tissue constructs based on innovative biomaterials that both promote blood vessel growth upon implantation into a host while simultaneously releasing oxygen to maintain the viability of the construct. This approach will be applied to producing a pancreatic-like tissue.
So far, oxygen-releasing biomaterials have been prepared using calcium peroxide. The tools for gene expression and protein analysis have been optimized. We are also currently attempting to prepare thick tissues using the pancreatic cell line MIN6-m9. Furthermore, the required training course for animal experiments have been attended and the experiment protocol is under review by the animal experimentation committee.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

The research carried out during the first year was to focus on the production of oxygen-releasing biomaterials, in vitro cell culture experiments and the optimization of tools for gene and protein expression analysis. As originally expected, biocompatible oxygen-releasing materials have so far been produced, the in vitro experiments are well under way and the long-term effects of the materials are under investigation. Furthermore, a significant part of the research carried out during the second year will be performed in vivo and the preparations for those experiments (designing and evaluating the animal experiment plan and attending necessary training courses) are now almost completed.

Strategy for Future Research Activity

The objective of the coming year is to evaluate the efficiency of the produced biomaterials in maintaining the viability of the thick cell constructs in vivo. As mimicking hypoxia is the adopted strategy to promote blood vessel growth after implantation, the first step will be to incorporate hypoxia-mimicking reagents to the constructs and test their effect in vitro on pro-angiogenic gene expression.
The next step is to perform animal experiments by implanting tissue constructs in the mesentery of anesthetized mice. After different periods (1 week to several months), the implants will be removed and tested for cell viability, vascularization and pancreatic gene expression.

  • Research Products

    (7 results)

All 2015 2014

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (4 results)

  • [Journal Article] Modulation of the effect of transforming growth factor-β3 by low-intensity pulsed ultrasound on scaffold-free dedifferentiated articular bovine chondrocyte tissues2015

    • Author(s)
      Ting Stephanie, Montagne Kevin, Nishimura Yoshihiro, Ushida Takashi, Furukawa Katsuko
    • Journal Title

      Tissue Engineering Part C

      Volume: 21 Pages: 1005-1014

    • DOI

      10.1089/ten.TEC.2014.0428

    • Peer Reviewed
  • [Journal Article] Enhanced chondrogenesis with upregulation of PKR using a novel hydrostatic pressure bioreactor2015

    • Author(s)
      Kim Jeonghyun, Montagne Kevin, Ushida Takashi, Furukawa Katsuko
    • Journal Title

      Bioscience, Biotechnology, and Biochemistry

      Volume: 79 Pages: 239-241

    • DOI

      10.1080/09168451.2014.975184

    • Peer Reviewed
  • [Journal Article] Dynamic DNA-toolbox reaction circuits: a walkthrough2014

    • Author(s)
      Baccouche Alexandre, Montagne Kevin, Padirac Adrien, Fujii Teruo, Rondelez Yannick
    • Journal Title

      Methods

      Volume: 67 Pages: 234-249

    • DOI

      10.1016/j.ymeth.2014.01.015.

    • Peer Reviewed
  • [Presentation] Hydrostatic pressure activates heterotrimeric G proteins in chondrocyte progenitor cells2015

    • Author(s)
      Montagne Kevin, Ogasawara Mutsuo, Kim Jeonghyun, Furukawa Katsuko, Ushida Takashi
    • Organizer
      8th Asian-Pacific Conference on Biomechanics
    • Place of Presentation
      Hokkaido University Sapporo Campus, Sapporo
    • Year and Date
      2015-09-16 – 2015-09-19
  • [Presentation] Activation of heterotrimeric G proteins under hydrostatic pressure in chondrocyte progenitor cells2015

    • Author(s)
      Montagne Kevin, Kim Jeonghyun, Furukawa Katsuko, Ushida Takashi
    • Organizer
      27th bioengineering lecture meeting of the Japan Society of Mechanical Engineers
    • Place of Presentation
      朱鷺メッセ新潟コンベンションセンター、新潟
    • Year and Date
      2015-01-09 – 2015-01-10
  • [Presentation] Cell membrane fluidity is down-regulated under hydrostatic pressure in chondrogenic cells2014

    • Author(s)
      Montagne Kevin, Uchiyama Hiroki, Furukawa Katsuko, Ushida Takashi
    • Organizer
      37th annual meeting of the Japanese Society of Biorheology
    • Place of Presentation
      大宮ソニックシティビル、大宮
    • Year and Date
      2014-06-05 – 2014-06-06
  • [Presentation] Membrane fluidity and desaturase gene expression are down-regulated under hydrostatic pressure in chondrogenic cells2014

    • Author(s)
      Montagne Kevin, Uchiyama Hiroki, Furukawa Katsuko, Ushida Takashi
    • Organizer
      International Symposium on Mechanobiology 2014, Okayama, Japan, May 20-23, 2014.
    • Place of Presentation
      Okayama University J-Hall, Okayama
    • Year and Date
      2014-05-20 – 2014-05-23

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Published: 2016-06-01  

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