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Involvement in proliferation and metastasis in exosomes from rhabdomyosarcoma

Research Project

Project/Area Number 20K16354
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionGifu University

Principal Investigator

Sugito Nobuhiko  岐阜大学, 大学院連合創薬医療情報研究科, 特任助教 (30847075)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords横紋筋肉腫 / キメラ遺伝子 / エクソソーム / PAX3-FOXO1 / 融合遺伝子
Outline of Research at the Start

横紋筋肉腫(RMS)は、融合遺伝子発現により悪性度が高まる小児がんである。融合遺伝子陽性のRMSは、高い増殖力と転移性を示す。近年、がんの増殖・転移に対するエクソソームの関連が示唆されており、RMSにおいてもエクソソームの関与が考えられる。本研究内では、融合遺伝子陰性・陽性のRMS細胞株由来のエクソソームを複数の細胞株に添加し、増殖能などを検証する。また、マウスモデルを用いて、RMS細胞由来のエクソソームが他の臓器や細胞に及ぼす影響を解明する。

Outline of Final Research Achievements

In this study, we tested the hypothesis that rhabdomyosarcoma-derived exosomes may be affected by expression of the chimeric gene PAX3-FOXO1 to promote their own growth and metastasis. exosomes derived from rhabdomyosarcoma cell lines expressing PAX3-FOXO1 were recovered by ultracentrifugation and added to the medium of various recipient cell lines. Exosomes derived from PAX3-FOXO1-expressing rhabdomyosarcoma cells induced increased expression of Cyclin D1 via PAX3-FOXO1 in the exosomes in various cell lines, confirming a growth promoting tendency. In addition, it was also confirmed that migration ability was promoted, suggesting that cells may be reprogrammed to a situation where they are more susceptible to metastasis.

Academic Significance and Societal Importance of the Research Achievements

小児期で最も頻度の高い軟部悪性腫瘍である横紋筋肉腫は、病理組織学的に胎児型と胞巣型の2種類に大別され、胞巣型で特異的染色体転座t(2;13)(p35;q14)によるキメラ遺伝子PAX3-FOXO1が発現するとともに、転移・再発の頻度も高く、予後不良である。本研究により、エクソソームを用いたリプログミングによる横紋筋肉腫の転移増強の可能性を示した。

Report

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

    (2 results)

All 2022

All Journal Article (2 results) (of which Peer Reviewed: 2 results)

  • [Journal Article] Plant hvu-MIR168-3p enhances expression of glucose transporter 1 (SLC2A1) in human cells by silencing genes related to mitochondrial electron transport chain complex I2022

    • Author(s)
      Akao Yukihiro、Kuranaga Yuki、Heishima Kazuki、Sugito Nobuhiko、Morikawa Kohei、Ito Yuko、Soga Tomoyoshi、Ito Tomohiro
    • Journal Title

      The Journal of Nutritional Biochemistry

      Volume: 101 Pages: 108922-108922

    • DOI

      10.1016/j.jnutbio.2021.108922

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chemically modified MIR143-3p exhibited anti-cancer effects by impairing the KRAS network in colorectal cancer cells2022

    • Author(s)
      Sugito Nobuhiko、Heishima Kazuki、Akao Yukihiro
    • Journal Title

      Molecular Therapy - Nucleic Acids

      Volume: 30 Pages: 49-61

    • DOI

      10.1016/j.omtn.2022.09.001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed

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

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