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Intravenous Injection of iPS Cell-Derived Endothelial Progenitor Cells Prevents Miscarriage by Releasing Pro-Angiogenic Factors in a Mouse Model of Recurrent Spontaneous Abortion

Research Project

Project/Area Number 20K18206
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56040:Obstetrics and gynecology-related
Research InstitutionOsaka Medical and Pharmaceutical University

Principal Investigator

Daimon Atsushi  大阪医科薬科大学, 医学部, 助教 (20846894)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords流産モデルマウス / iPS細胞 / 血管内皮前駆細胞 / 血管新生因子 / CD34 / CD31 / CD45 / 流産率 / ヒトiPS細胞 / 不育症 / 妊娠高血圧腎症 / 血管内皮細胞
Outline of Research at the Start

血管内皮細胞を含むマウス多能性幹細胞由来細胞群(マウスPSC-EPs)を自然発生の不育症・妊娠高血圧腎症(preeclampsia, PE)モデルマウスに移植すると、胎仔母胎血管が増加し、流産率が低下することを明らかにした。このモデルマウスに血管内皮細胞を含むヒトiPS細胞由来細胞群(ヒトPSC-EPs)を移植しても流産率が低下する傾向をつかんだ。本研究では、今後の臨床応用へ向け、この不育症・PEモデルマウスに対するヒトPSC-EPsの治療効果を確定させ、さらにヒトPSC-EPs投与の安全性、そして、その作用機序を解析する。これらの解析から、ヒト不育症・PEの有効な治療法確立の一歩とする。

Outline of Final Research Achievements

In this study, we investigated whether human induced pluripotent stem cell-derived EPCs (hiPS-EPCs) could improve abortion rates in a mouse model of recurrent spontaneous miscarriage. Intravenous transplantation of hiPS-EPCs significantly reduced abortion rates. To elucidate the mechanism by which miscarriages were ameliorated, we investigated whether the cells were preserved in the embryos. We differentiated GFP-labeled iPSCs into EPCs (GFP-EPCs), and intravenously injected them into the model mouse. Whole-mount immunostaining analysis showed the presence of injected cells expressing GFP in the uterine vasculature adjacent to the embryos from mice injected with GFP-EPCs. Furthermore, the gene expression of fluid factors such as VEGF and PlGF was increased in the placentas of mice implanted with hiPS-EPCs. These data indicate that hiPS-EPC transplantation therapy may reduce miscarriage via transplanted cells that remain in the uterine vasculature and secrete pro-angiogenic factors.

Academic Significance and Societal Importance of the Research Achievements

hiPS-EPCの静脈投与によって、流産モデルマウスの胎盤におけるVEGF・PlGFの発現が増加し、流産率が減少した。これらの結果は、静脈内投与により妊娠胚に到達したhiPS-EPCが、血管新生促進因子を産生することで、マウス胎盤における血管新生促進因子発現も改善し、流産を減少させる可能性を示唆するものであり、流産に対する治療法の確立に期待できると考える。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (1 results)

All 2023

All Journal Article (1 results) (of which Peer Reviewed: 1 results)

  • [Journal Article] Intravenous Injection of iPS Cell-Derived Endothelial Progenitor Cells Prevents Miscarriage by Releasing Pro-Angiogenic Factors in a Mouse Model of Recurrent Spontaneous Abortion2023

    • Author(s)
      Natsuko Morita
    • Journal Title

      Bulletin of Osaka Medical and Pharmaceutical University

      Volume: 69 Pages: 21-30

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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