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Endothelial colony forming cells in retinal vasculature

Research Project

Project/Area Number 21K09674
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionOsaka University

Principal Investigator

Sakimoto Susumu  大阪大学, 大学院医学系研究科, 特任准教授(常勤) (60633047)

Project Period (FY) 2021-04-01 – 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 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords網膜血管 / 血管内皮細胞 / 血管内皮コロニー形成細胞 / 糖尿病網膜症
Outline of Research at the Start

血管内皮コロニー形成細胞(Endothelial colony-forming cells: ECFCs)は、細胞治療に用いるヒトないしは自家血管内皮細胞のソースとして知られているが、近年広義のECFCとして、生体内における血管内皮幹/前駆細胞の存在が注目されている。申請者は、網膜血管におけるECFCの同定とニッチ環境の解明を計画している。特に糖尿病網膜症などの疾患モデルにおいて、ECFCによる血管の構築能力が疾患の発症に寄与するかを解明することを目標とする。

Outline of Final Research Achievements

We analyzed the retinal vascular remodeling mechanism of gene A, which belongs to the CREB family. Retinal vascular endothelial cells were isolated using flow cytometry in wild-type mice during retinal vascular development and in an ischemic retinopathy model, and gene A expression was confirmed by qPCR. Angiogenesis assays using gene A knockdown (KD) human retinal vascular endothelial cells showed a significant decrease in vascular density. Analysis using gene A knockout (KO) mice showed decreased vascular elongation and an increase in the vascular-free field in the OIR model. Results suggest that gene A is involved in retinal vascular architecture.

Translated with www.DeepL.com/Translator (free version)

Academic Significance and Societal Importance of the Research Achievements

血管内皮コロニー形成細胞(Endothelial colony-forming cells: ECFCs)は、細胞治療に用いるヒトないしは自家血管内皮細胞のソースとして知られているが、近年広義のECFCとして、生体内における血管内皮幹/前駆細胞の存在が注目されている。申請者は、最近報告されているCD201などのマーカーに着目し、網膜血管におけるECFCの同定とニッチ環境の解明を行っており、本研究成果はECFCを調節する遺伝子の役割を明らかにすることができた。

Report

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

    (7 results)

All 2023 2022 2021

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 2 results)

  • [Journal Article] Embedding Technique versus Conventional Internal Limiting Membrane Peeling for Lamellar Macular Holes with Epiretinal Proliferation.2023

    • Author(s)
      Kanai M, Sakimoto S, Takahashi S, Nishida K, Maruyama K, Sato S, Sakaguchi H, Nishida K.
    • Journal Title

      Ophthalmol Retina

      Volume: 7 Issue: 1 Pages: 44-51

    • DOI

      10.1016/j.oret.2022.07.009

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Bioactive extracellular vesicles from a subset of endothelial progenitor cells rescue retinal ischemia and neurodegeneration2022

    • Author(s)
      Marra KV, Aguilar E, Guoqin W, Usui-Ouchi A, Ideguchi Y, Sakimoto S, Friedlander M.
    • Journal Title

      JCI Insight

      Volume: 7 Issue: 12

    • DOI

      10.1172/jci.insight.155928

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Analysis of Progressive Neovascularization in Diabetic Retinopathy Using Widefield OCT Angiography.2022

    • Author(s)
      Shiraki A, Sakimoto S, Eguchi M, Kanai M, Hara C, Fukushima Y, Nishida K, Kawasaki R, Sakaguchi H, Nishida K.
    • Journal Title

      Ophthalmol Retina.

      Volume: 5 Issue: 2 Pages: 153-160

    • DOI

      10.1016/j.oret.2021.05.011

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Flow pattern and perforating vessels in three different phases of myopic choroidal neovascularization seen by swept-source optical coherence tomography angiography.2021

    • Author(s)
      Sayanagi K, Hara C, Fukushima Y, Sakimoto S, Kawasaki R, Sato S, Ikuno Y, Sakaguchi H, Nishida K.
    • Journal Title

      Graefes Arch Clin Exp Ophthalmol.

      Volume: 259 Issue: 9 Pages: 2615-2624

    • DOI

      10.1007/s00417-021-05134-y

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Association of disorganization of retinal inner layers with optical coherence tomography angiography features in branch retinal vein occlusion.2021

    • Author(s)
      Kanai M, Shiozaki D, Sakimoto S, Shiraki A, Hara C, Kawasaki R, Sakaguchi H, Nishida K.
    • Journal Title

      Graefes Arch Clin Exp Ophthalmol.

      Volume: 259 Issue: 10 Pages: 2897-2903

    • DOI

      10.1007/s00417-021-05168-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Long-term outcomes of intravitreal activated protein C injection for ischemic central retinal vein occlusion: an extension trial.2021

    • Author(s)
      Hara C, Kamei M, Sakaguchi H, Matsumura N, Sakimoto S, Suzuki M, Nishida K, Fukushima Y, Nishida K.
    • Journal Title

      Graefes Arch Clin Exp Ophthalmol.

      Volume: 259 Issue: 10 Pages: 2919-2927

    • DOI

      10.1007/s00417-021-05072-9

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reconnection of the Severed Vein in Proliferative Diabetic Retinopathy.2021

    • Author(s)
      Shiraki A, Sakimoto S, Nishida K.
    • Journal Title

      Ophthalmol Retina.

      Volume: 6 Issue: 9 Pages: 887-887

    • DOI

      10.1016/j.oret.2021.06.004

    • Related Report
      2021 Research-status Report
    • Peer Reviewed

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Published: 2021-04-28   Modified: 2025-01-30  

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