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Reorganization of blood/lymphatic vessel networks by irradiation under the presence/absence of cancer cells in mouse tongue xenograft model

Research Project

Project/Area Number 17K17111
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Pathobiological dentistry/Dental radiology
Research InstitutionThe Nippon Dental University

Principal Investigator

SHIRAKO Youichi  日本歯科大学, 生命歯学部, 助教 (50756377)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords病理学 / 扁平上皮癌 / 放射線 / リンパ管 / 創傷治癒 / 同所移植モデル / 腫瘍 / 歯学
Outline of Final Research Achievements

To clarify the vascular tissue damage and its repair mechanism after radiation to oral cancer, we analyzed structural changes of blood and lymphatic vessels after X-ray irradiation in a transplantation model of human oral cancer cells into mouse tongue. X-ray irradiation of tumor-bearing tongue tissue resulted in necrosis of cancerous lesions and caused mucositis in tongue epithelium. While the overall vasculature was kept relatively stable, some lymphatic endothelium exhibited proliferative activity. There observation suggested that the repair speed of lymphatic endothelium after X-ray irradiation may lead to lymphatic metastasis via interaction with residual cancer cells.

Academic Significance and Societal Importance of the Research Achievements

口腔癌の放射線治療に関する基礎研究では、癌の再燃に関わる組織修復機構が注目されてきたが、被照射組織において想定される複雑な癌細胞‐間質間相互作用を詳細に検証した例は少ない。また、口腔癌の多発する粘膜上皮ではリンパ管も存在するが、固形癌におけるリンパ管新生は血管新生と比較して解析が遅れていた。本研究で確立したOSC19移植によるリンパ管誘導では、移植後2週間程度で癌胞巣内に高密度のリンパ管網を構築でき、腫瘍リンパ管内皮細胞の解析に適した実験モデルとなることを実証した。癌治療における損傷血管・リンパ管の再構築機序に関する研究の推進に寄与できると考えている。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (7 results)

All 2018 2017

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

  • [Journal Article] Migration of lymphatic endothelial cells and lymphatic vascular development in the craniofacial region of embryonic mice2018

    • Author(s)
      Taya Y, Sato K, Shirako Y, Soeno Y
    • Journal Title

      Int J Dev Biol

      Volume: 62 Issue: 4-5 Pages: 293-301

    • DOI

      10.1387/ijdb.170218yt

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Lymphatic vascular development in the craniofacial region of embryonic mice ― Migration of lymphatic endothelial cells from cardinal veins into mandibular arches2018

    • Author(s)
      Taya Y, Sato K, Shirako Y, Soeno Y
    • Organizer
      Joint Annual Meeting of 51st JSDB and 70th JSCB
    • Related Report
      2018 Annual Research Report
  • [Presentation] マウス顎顔面領域へのリンパ管内皮細胞の移住とリンパ管形成2018

    • Author(s)
      田谷雄二,佐藤かおり,白子要一,添野雄一
    • Organizer
      第60回歯科基礎医学会学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Lymphangiogenic dynamics in oral cancer microenvironment2017

    • Author(s)
      Shirako Y, Taya Y, Sato K, Soeno Y
    • Organizer
      日本歯科大学Winter Meeting 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Tongue morphogenesis through epithelial-mesenchymal interaction in mouse embryos2017

    • Author(s)
      Taya Y, Sasaki Y, Shirako Y, Sato K, Soeno Y
    • Organizer
      International Society of Developmental Biologists
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Regulatory switches of commitment from myogenic progenitors into myoblasts or satellite cells in the development of mouse tongue2017

    • Author(s)
      Taya Y, Sato K, Shirako Y, Soeno Y
    • Organizer
      日本歯科大学Winter Meeting 2017
    • Related Report
      2017 Research-status Report
  • [Book] ポイントレビュー病理学・口腔病理学2018

    • Author(s)
      佐藤かおり,田谷雄二,白子要一,添野雄一
    • Total Pages
      115
    • Publisher
      キタメディア出版
    • ISBN
      9784907832216
    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2020-03-30  

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