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Mechanisms of morphology regulation in vascular endothelial cells

Research Project

Project/Area Number 15K11259
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Surgical dentistry
Research InstitutionHokkaido University (2016-2018)
Kumamoto University (2015)

Principal Investigator

Tamura Kiyomi  北海道大学, 歯学研究院, 助教 (90399973)

Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords血管 / 血管新生 / 細胞伸長 / 血管内皮細胞 / ES細胞 / SM22 / ミオシン軽鎖
Outline of Final Research Achievements

The earliest stage of formation of vascular structure requires proliferation, differentiation and morphological change in vascular endothelial cells. We focused on mechanisms of endothelial cell morphological change (cell elongation and formation of cord-like vessels). To examine signaling pathway regulating elongation of vascular endothelial cells, we performed a pharmacological screening method using vascular model of mouse ES cells. The inhibition of PI3K-Akt or mTORC1 caused elongation of vascular endothelial cells in the presence of a low concentration of VEGF, which usually does not induce endothelial cell elongation. In addition, our findings suggested that PI3K-Akt or mTORC1 differentially regulate endothelial cell elongation through transcription factor Foxo1-dependent or independent pathway, in response to the microenvironmental levels of VEGF.

Academic Significance and Societal Importance of the Research Achievements

近年、再生医療による組織の回復が期待されているが、組織の再生には、その内部に酸素や栄養を供給する血管ネットワークが必要不可欠である。血管内皮細胞増殖因子(VEGF)等の増殖因子を用いた血管誘導が試みられているが、増殖因子の機能は、増殖・分化から形態調節まで多岐にわたるため、未成熟血管の過形成などの多くの問題がある。本研究の血管伸張を特異的に制御するメカニズムの解明によって、血管の形態形成過程についての基礎的理解が得られた。また、低濃度VEGF環境において血管伸張を誘導する化合物の同定は、VEGFの過剰投与を必要としない血管誘導方法の開発に貢献できると考えている。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (16 results)

All 2018 2017 2016 2015

All Journal Article (6 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results,  Acknowledgement Compliant: 2 results) Presentation (10 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Morphology regulation in vascular endothelial cells2018

    • Author(s)
      Tsuji-Tamura Kiyomi、Ogawa Minetaro
    • Journal Title

      Inflammation and Regeneration

      Volume: 38 Issue: 1 Pages: 1-13

    • DOI

      10.1186/s41232-018-0083-8

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dual inhibition of mTORC1 and mTORC2 perturbs cytoskeletal organization and impairs endothelial cell elongation.2018

    • Author(s)
      Tsuji-Tamura K, Ogawa M
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 497 Issue: 1 Pages: 326-331

    • DOI

      10.1016/j.bbrc.2018.02.080

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Vascular formation : in vitro differentiation of vascular endothelial cells from pluripotent stem cells2017

    • Author(s)
      Tsuji-Tamura Kiyomi, Tamura Masato
    • Journal Title

      北海道歯学雑誌

      Volume: 38(Special issue) Pages: 80-85

    • Related Report
      2017 Research-status Report
    • Open Access
  • [Journal Article] 胚性幹細胞を用いた血管形成メカニズムの解明2017

    • Author(s)
      田村-辻 潔美, 田村 正人
    • Journal Title

      北海道歯学雑誌

      Volume: 37 Pages: 173-176

    • Related Report
      2016 Research-status Report
  • [Journal Article] CXCR4 signaling negatively modulates the bipotential state of hemogenic endothelial cells derived from embryonic stem cells by attenuating the endothelial potential.2016

    • Author(s)
      T. Ahmed, K. Tsuji-Tamura, M. Ogawa
    • Journal Title

      Stem Cells

      Volume: 34 Issue: 12 Pages: 2814-2824

    • DOI

      10.1002/stem.2441

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Inhibition of the PI3K/Akt and mTORC1 signaling pathways promotes the elongation of vascular endothelial cells2016

    • Author(s)
      Kiyomi Tsuji-Tamura and Minetaro Ogawa
    • Journal Title

      J Cell Sci.

      Volume: 129 Issue: 6 Pages: 1165-1178

    • DOI

      10.1242/jcs.178434

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 血管内皮細胞の細胞骨格と細胞伸張に対するmTORC1/mTORC2阻害剤の抑制効果2018

    • Author(s)
      田村-辻潔美,田村 正人,小川峰太郎
    • Organizer
      第39回日本炎症・再生医学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 血管内皮細胞におけるmTORC1/mTORC2阻害剤の効果2018

    • Author(s)
      田村-辻 潔美, 田村 正人
    • Organizer
      第60回歯科基礎医学会学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Elongation of vascular endothelial cells is accompanied by activation of the SM22 gene, a canonical marker of smooth muscle cells2018

    • Author(s)
      Kiyomi Tsuji-Tamura, Minetaro Ogawa
    • Organizer
      Key forum: The 3rd International Symposium on Stem Cell Traits and Developmental System
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] VEGF濃度依存性の二つの経路による血管伸張の制御機構2018

    • Author(s)
      田村-辻 潔美、田村 正人
    • Organizer
      第3回北大・部局横断シンポジウム 研究ネットワーク促進プログラム~Young Researchers in Cutting-edge Life Science
    • Related Report
      2017 Research-status Report
  • [Presentation] 血管伸張は、VEGF濃度に依存して異なる二つの経路で調節される2017

    • Author(s)
      田村-辻 潔美、田村 正人
    • Organizer
      第54回日本生化学会北海道支部例会 日本生化学会北海道支部・日本生物物理学会北海道支部合同シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 血管内皮細胞の伸張に伴うSM22の発現-血管形成の指標としての可能性2017

    • Author(s)
      田村-辻 潔美、田村 正人、小川 峰太郎
    • Organizer
      第38回日本炎症・再生医学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 血管内皮細胞の伸張機能に着目した、血管形成の新たな指標の探索2017

    • Author(s)
      田村-辻 潔美、田村 正人
    • Organizer
      第59回歯科基礎医学会
    • Related Report
      2017 Research-status Report
  • [Presentation] The induction of vascular endothelial cell elongation without an overdose of vascular endothelial growth factor (VEGF)2017

    • Author(s)
      田村-辻 潔美、田村 正人
    • Organizer
      第65回国際歯科研究学会日本部会(JADR)学術大会
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] PI3K-AktとmTORC1シグナルは血管内皮細胞の伸長機能を制御する2016

    • Author(s)
      田村-辻潔美,田村正人
    • Organizer
      第58回歯科基礎医学会学術大会
    • Place of Presentation
      札幌コンベンションセンター(札幌)
    • Year and Date
      2016-08-24
    • Related Report
      2016 Research-status Report
  • [Presentation] 血管伸長を誘導する2つの経路:PI3K/Akt/Foxo1とmTORC12015

    • Author(s)
      田村-辻 潔美、小川 峰太郎
    • Organizer
      第36回日本炎症・再生医学会
    • Place of Presentation
      虎ノ門ヒルズフォーラム(東京)
    • Year and Date
      2015-07-21
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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