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Analysis of coagulation and fibrinolytic functions and vascular endothelium-platelet interaction using disease-specific iPS cells

Research Project

Project/Area Number 20K08710
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54010:Hematology and medical oncology-related
Research InstitutionHamamatsu University School of Medicine

Principal Investigator

SANO Hideto  浜松医科大学, 医学部, 助教 (80623842)

Co-Investigator(Kenkyū-buntansha) 浦野 哲盟  浜松医科大学, 医学部, 特命研究教授 (50193967)
鈴木 優子  浜松医科大学, 医学部, 教授 (20345812)
田中 宏樹  浜松医科大学, 医学部, 特任研究員 (50456563)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords線溶反応 / iPS細胞 / 血管内皮細胞 / 血小板 / 細胞動態機能 / 疾患特異的iPS細胞 / 凝固線溶系 / 遺伝子編集 / 血管新生 / 線維素溶解 / 凝固 / 内皮細胞
Outline of Research at the Start

「血栓症」は、国民病の一つに挙げられ、原因である血液の凝固・線維素溶解(線溶)についてのさらなる理解は喫緊の課題である。線溶反応の主要な調節因子であるPAI-1は、炎症や悪性腫瘍、生活習慣病において重要な指標でもある。 PAI-1欠損患者では、重篤な出血と創傷治癒の遅延が認められている。申請者らはPAI-1欠損患者由来iPS細胞(PAI-1iPS)を樹立し血管内皮細胞へ分化させ、未熟な血管新生が創傷治癒遅延の原因である可能性を示唆した。一方で出血への関与についての詳細は不明である。本研究では、新たにPAI-1iPS由来血小板を樹立し、出血の原因・機構を探る。

Outline of Final Research Achievements

We performed vascular endothelial cell and platelet differentiation from iPS cells derived from PAI-1-deficient patients. Regarding the differentiation stage, various differentiation methods were tried. We have confirmed that the co-culture method on stromal OP9 cells was the most efficient in endothelial differentiation. PAI-1-deficient iPS cell-derived endothelial cells showed an increase in the number of short sprouts by vascular sprouting assay, but vascular outgrowth was suppressed. Platelet differentiation is under ongoing analysis.
On the other hand, when PAI-1-deficient endothelial cells were established by genome editing of a human vascular endothelial cell line, the cell dynamics and tube formation were totally different compared to control cells suggested PAI-1 would be involved in angiogenesis. To further elucidate the role of PAI-1, it is necessary to establish further iPS cells derived from PAI-1-deficient patients.

Academic Significance and Societal Importance of the Research Achievements

本研究成果として、これまでに関与が示唆されていた線溶系の血管新生への影響について、さらに踏み込んだ解析を行った。近年血管新生は、血管内皮細胞の多様性により開始・伸長・安定化の3ステップにより成立することが判明してきた。本研究の結果、PAI-1欠損内皮細胞では血管新生開始を促進するが、伸長が抑制される新たなメカニズムが示唆された。以上より、線溶系の時空間的調節により血管新生の制御の可能性が広がり、創傷治癒、腫瘍、末梢血管障害等の疾患への応用へ繋がると考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2023 2022 2021 2020

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (5 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Visualization of Domain- and Concentration-Dependent Impact of Thrombomodulin on Differential Regulation of Coagulation and Fibrinolysis2023

    • Author(s)
      Mochizuki Liina、Sano Hideto、Honkura Naoki、Masumoto Kazuma、Urano Tetsumei、Suzuki Yuko
    • Journal Title

      Thrombosis and Haemostasis

      Volume: 123 Issue: 01 Pages: 016-026

    • DOI

      10.1055/s-0042-1757407

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pre-administration of a carboxypeptidase inhibitor enhances tPA-induced thrombolysis in mouse microthrombi: Evidence from intravital imaging analysis2022

    • Author(s)
      Mathews Nitty Skariah、Suzuki Yuko、Honkura Naoki、Sano Hideto、Iwashita Toshihide、Urano Tetsumei
    • Journal Title

      Thrombosis Research

      Volume: 210 Pages: 78-86

    • DOI

      10.1016/j.thromres.2021.12.031

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Demonstration of Three Distinct High-Molecular-Weight Complexes between Plasminogen Activator Inhibitor Type 1 and Tissue-Type Plasminogen Activator2021

    • Author(s)
      Ito Tae、Suzuki Yuko、Sano Hideto、Honkura Naoki、Castellino Francis J.、Urano Tetsumei
    • Journal Title

      Thrombosis and Haemostasis

      Volume: 122 Issue: 03 Pages: 336-343

    • DOI

      10.1055/a-1508-7919

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fibrinolysis-resistant carbonylated fibrin detected in thrombi attached to the vascular wall of abdominal aortic aneurysms2020

    • Author(s)
      Suzuki Yuko、Tanaka Hiroki、Horinouchi Takahiro、Sano Hideto、Honkura Naoki、Unno Naoki、Miwa Soichi、Urano Tetsumei
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 20728-20728

    • DOI

      10.1038/s41598-020-77582-1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Activated platelet-based inhibition of fibrinolysis via thrombin-activatable fibrinolysis inhibitor activation system2020

    • Author(s)
      Suzuki Yuko、Sano Hideto、Mochizuki Liina、Honkura Naoki、Urano Tetsumei
    • Journal Title

      Blood Advances

      Volume: 4 Issue: 21 Pages: 5501-5511

    • DOI

      10.1182/bloodadvances.2020002923

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Effects of PAI-1 knock-out in vascular endothelial cells on their motilities2023

    • Author(s)
      佐野秀人
    • Organizer
      日本生理学会 第100回記念大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Effects of enhanced plasmin activity on the surface of vascular endothelial cells on their motilities2022

    • Author(s)
      Hideto Sano
    • Organizer
      Gordon Research Conference - Plasminogen Activation and Extracellular Proteolysis
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] プラスミン活性亢進による血管内皮細胞動態への影響について2022

    • Author(s)
      佐野秀人
    • Organizer
      第69回中部日本生理学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Impact of cellular fibrinolytic systems on angiogenesis and wound healing2022

    • Author(s)
      佐野秀人
    • Organizer
      第44回日本血栓止血学会学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] TAFI-dependent inhibition of fibrinolysis by thrombomodulin.2020

    • Author(s)
      Sano Hideto
    • Organizer
      Gordon Research Conference on Plasminogen Activation and Extracellular Proteolysis.
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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