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Biological and clinicopathological significance of CLDN9 expression in endometrial cancer

Research Project

Project/Area Number 20K16176
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 49020:Human pathology-related
Research InstitutionFukushima Medical University

Principal Investigator

Kojima Manabu  福島県立医科大学, 医学部, 准教授 (30746970)

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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords子宮体癌 / 細胞接着因子 / クローディン9 / がん診断マーカー / 細胞間接着 / クローディン / がん / バイオマーカー / 細胞間接着分子 / 子宮内膜癌 / 核内受容体 / シグナル伝達
Outline of Research at the Start

申請者はクローディン-6(CLDN6)が子宮内膜癌の予後不良因子であり、子宮内膜癌細胞株においてCLDN6過剰発現はエストロゲン受容体依存性に悪性形質を増強することを明らかにした。ところで最近公開されたThe Cancer Genome Atlasデータベースによると、CLDN6と近縁なCLDN9のmRNA高発現が子宮内膜癌の予後不良因子である可能性が示されている。以上のことから「異常発現したCLDN9を起点とするシグナルが、ERαもしくは他のNRsの活性化を介して子宮内膜癌の悪性形質増強に作用する」という仮説をたてた。本研究ではこの仮説を検証し、子宮内膜癌におけるCLDN9の予後マーカーおよび新規治療標的としての可能性を探る。

Outline of Final Research Achievements

The prognostic significance of CLDN9 expression in endometrial cancer was evaluated by immunohistochemical staining and semi-quantification using formalin fixed paraffin embedded specimens. The 5-year disease specific survival rate of high CLDN9 expression group was significantly lower than of low CLDN9 expression group. In addition, multivariate analysis revealed that high CLDN9 expression was an independent prognostic factor.

Academic Significance and Societal Importance of the Research Achievements

CLDN9は子宮体がんの予後不良例を抽出する予後予測マーカーとして有用である。さらにCLDN6と組み合わせることで、より広く予後不良症例を抽出することができる。今後、分子生物学的なメカニズムを行い、CLDN9を標的とした個別化医療を行うことができる可能性がある。さらに、CLDN6との抗体カクテルによる層別化や治療標的に貢献しうる。

Report

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

    (5 results)

All 2022 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (1 results)

  • [Journal Article] Claudin-9 is a novel prognostic biomarker for endometrial cancer2022

    • Author(s)
      Endo Yuta、Sugimoto Kotaro、Kobayashi Makoto、Kobayashi Yasuyuki、Kojima Manabu、Furukawa Shigenori、Soeda Shu、Watanabe Takafumi、Higashi Atsuko、Higashi Tomohito、Hashimoto Yuko、Fujimori Keiya、Chiba Hideki
    • Journal Title

      International Journal of Oncology

      Volume: 61 Issue: 5 Pages: 135-135

    • DOI

      10.3892/ijo.2022.5425

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reduced Claudin-12 Expression Predicts Poor Prognosis in Cervical Cancer2021

    • Author(s)
      Rahman Abidur、Kobayashi Makoto、Sugimoto Kotaro、Endo Yuta、Kojima Manabu、Furukawa Shigenori、Watanabe Takafumi、Soeda Shu、Hashimoto Yuko、Fujimori Keiya、Chiba Hideki
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 7 Pages: 3774-3774

    • DOI

      10.3390/ijms22073774

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Aberrant Claudin-6-Adhesion Signaling Promotes Endometrial Cancer Progression via Estrogen Receptor α2021

    • Author(s)
      Kojima M, Sugimoto K, Kobayashi M, Ichikawa-Tomikawa N, Kashiwagi K, Watanabe T, Soeda S, Fujimori K, Chiba H.
    • Journal Title

      Mol Cancer Res . in press

      Volume: in press

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Prognostic Significance of Aberrant Claudin-6 Expression in Endometrial Cancer2020

    • Author(s)
      Kojima Manabu、Sugimoto Kotaro、Tanaka Mizuko、Endo Yuta、Kato Hitomi、Honda Tsuyoshi、Furukawa Shigenori、Nishiyama Hiroshi、Watanabe Takafumi、Soeda Shu、Fujimori Keiya、Chiba Hideki
    • Journal Title

      Cancers

      Volume: 12 Issue: 10 Pages: 2748-2748

    • DOI

      10.3390/cancers12102748

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Claudin-9 is a novel biomarker of the prognosis of Endometrial cancer2022

    • Author(s)
      Yuta Endo, Shu Soeda, Tetsu Sato, Chikako Okabe, Makiko Ueda, Norihito Kamo, Manabu Kojima, Shigeori Furukawa, Takafumi Watanabe, Keiya Fujimori
    • Organizer
      第74回日本産科婦人科学会学術講演会
    • Related Report
      2022 Annual Research Report

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

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