• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Analysis of the mechanism of hypoxia-inducible factor cascade regulation by Fra-1 in esophageal squamous cell carcinoma.

Research Project

Project/Area Number 20K16324
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

Toyozumi Takeshi  千葉大学, 医学部附属病院, 助教 (80645606)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords食道扁平上皮癌 / Fra-1 / HIF-1α / 低酸素 / 低酸素環境 / HIF-1 α / 低酸素誘導因子 / 食道癌
Outline of Research at the Start

食道扁平上皮癌における転写因子Fra-1 (Fos related antigen-1)と低酸素誘導因子HIF (Hypoxia Inducible Factor)ならびにその下流カスケードとの関連を解析し、低酸素環境下におけるHIF上流制御因子としてのFra-1の分子病態学的意義を解明する。
さらにFra-1発現やFra-1の機能をターゲットにした治療戦略が低酸素環境下におけるHIFならびに下流カスケード制御を介した新たな治療シーズになり得るかを探り、新規治療開発に向けた研究基盤を確立する。

Outline of Final Research Achievements

We confirmed suppression of HIF-1α expression in a Fra-1 knockdown model using an esophageal squamous cell carcinoma (ESCC) cell line, and observed high expression of HIF-1α in a hypoxic environment. In a HIF-1α knockdown model, we confirmed suppression of changes in cell function and enhancement of 5FU sensitivity. We confirmed a positive correlation between high HIF-1α expression and tumor growth using a mouse subcutaneous implantation model.
We revealed that Wnt/β-catenin pathway-related proteins are downstream regulatory proteins of HIF-1α, and revealed direct binding between β-catenin and HIF-1α in ESCC cell lines.
Furthermore, the results of immunostaining using preoperatively untreated esophageal cancer resection specimens showed that high HIF-1α expression is a factor that worsens the prognosis of esophageal squamous cell carcinoma.

Academic Significance and Societal Importance of the Research Achievements

食道扁平上皮癌におけるFra-1発現とHIF-1α発現の関連やHIF-1αの下流カスケードを明らかにした研究報告は少なく、食道扁平上皮癌の低酸素環境における分子病態学的変化についてはいまだに不明点が多い。本研究成果はFra-1の下流カスケードとしてのHIF-1α、さらにHIF-1αの下流カスケードとしてのWnt/β-catenin経路関連タンパクの存在を明らかにし、食道扁平上皮癌の低酸素環境解析における新たな研究シーズならびに治療ターゲットを提供した。

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

    (6 results)

All 2023 2022 2020

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] HIF-1α stimulates the progression of oesophageal squamous cell carcinoma by activating the Wnt/β-catenin signalling pathway.2022

    • Author(s)
      Tang K, Toyozumi T, Murakami K, Sakata H, Kano M, Endo S, Matsumoto Y, Suito H, Takahashi M, Sekino N, Otsuka R, Kinoshita K, Hirasawa S, Hu J, Uesato M, Hayano K, Matsubara H.
    • Journal Title

      Br J Cancer.

      Volume: 127(3) Issue: 3 Pages: 474-487

    • DOI

      10.1038/s41416-022-01825-3

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] HIF-1α stimulates the progression of esophageal squamous cell carcinoma by activating the Wnt/β-catenin signaling pathway2022

    • Author(s)
      Kang Tang
    • Journal Title

      British Journal of Cancer

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] HIF-1αはWnt/β-cateninシグナル伝達経路を介して食道扁平上皮癌の進行を促進する2023

    • Author(s)
      唐 康、豊住 武司
    • Organizer
      外科分子細胞治療研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] HIF-1αはWnt/β-catenin経路の亢進を介して食道扁平上皮癌の進行に関与する2022

    • Author(s)
      豊住武司
    • Organizer
      第81回 日本癌学会学術総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Hypoxia-inducible factor 1α (HIF-1α) stimulates the progression of oesophageal squamous cell carcinoma by activating the Wnt/β-catenin signalling pathway.2022

    • Author(s)
      Takeshi Toyozumi
    • Organizer
      the 18th ISDE
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Hypoxia-inducible factor 1α (HIF-1α) stimulates tumor progression of Esophageal squamous cell carcinoma by targeting Wnt/β-catenin signal pathway.2020

    • Author(s)
      豊住武司
    • Organizer
      第79回日本癌学会学術総会
    • Related Report
      2020 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi