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WNT Signaling in Esophageal Cancer - Mechanism of TCF Activity without Beta-catenin

Research Project

Project/Area Number 20K17698
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionNagoya City University

Principal Investigator

Fujihata Shiro  名古屋市立大学, 医薬学総合研究院(医学), 研究員 (10825483)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords食道癌 / β-catenin / βーcatenin / WNTシグナル / TCF活性
Outline of Research at the Start

Wntシグナルは発生や恒常性の維持など多様な働きがあることが知られている.さらに,大腸癌などでは,βカテニンの核内以降によりWntシグナルを介した転写因子TCFの活性化が悪性度を高めている.一方我々は,食道癌ではβカテニンが核に集積しないことを報告した.しかし,食道癌の免疫染色で,核にTCF4が強発現し,食道癌細胞株でもTCF活性が大腸癌とほぼ同等に高いことを確認した.つまり,βカテニンの核内移行を伴わないWntシグナル活性化のメカニズムが想定され,本研究では食道癌でのWntシグナル活性化の検証を行い,βカテニンを介さないTCFの活性化メカニズムを同定することを目的とした.

Outline of Final Research Achievements

We compared the expression of βcatenin with prognostic and pathological factors in 171 clinical specimens of esophageal cancer by immunostaining, and found a trend toward an association between βcatenin expression and prognosis, but no significant results. In cellular experiments, esophageal cancer cells expressed more βcatenin than normal esophageal cells.

Academic Significance and Societal Importance of the Research Achievements

今回の検討では有意差は認められなかったが、食道癌においてはβcateninの発現量が予後に関連する可能性があると考えられた。

Report

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

URL: 

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

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