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Cell competition between tumour cells expressing different claudins

Research Project

Project/Area Number 17K08766
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Experimental pathology
Research InstitutionFukushima Medical University

Principal Investigator

Ichikawa-Tomikawa Naoki  福島県立医科大学, 医学部, 博士研究員 (80468587)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords細胞間接着 / がん / 細胞競合 / 腫瘍内不均一性 / 癌 / 細胞・組織 / 発現制御
Outline of Final Research Achievements

Various molecules, including cell adhesion molecule claudins (CLDN), are aberrantly expressed in cancer cells. We have discovered a novel signaling pathway from CLDN to novel serine phosphorylation of nuclear receptors that regulates tomour malignacy in breast and endometrial cancers. On the other hand, we found that one CLDN molecule regulates the expression of another CLDN molecule in cultured cancer cell lines and human cancer tissues. In particular, CLDN4 and CLDN6 were exclusively distributed, and CLDN4-positive or CLDN6-positive cells have different features not only in intercellular adhesion, but also in cell polarity or proliferation. These results indicate that the CLDN expression pattern may be a useful cancer biomarker for personalized treatment.

Academic Significance and Societal Importance of the Research Achievements

CLDN分子の相互発現制御を解明することにより、異種CLDNどうしのタンパクレベルでの発現制御機構といった新たな生命現象を提唱できる可能性がある。また本機構によってがん組織に発生するCldn分子の多彩な発現様式が腫瘍内不均一性を示し、がんの分化度や悪性度に関連することが明らかになれば、診断並びに予後不良の新たな指標となることが見込まれる。さらn異なるCLDN分子を発現誘導することにより、がんの悪性化に繋がるCLDN発現を抑制するという、新規分子標的療法の開発に繋がることが期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (3 results)

All 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results)

  • [Journal Article] Cell adhesion signals regulate the nuclear receptor activity2019

    • Author(s)
      Sugimoto Kotaro、Ichikawa-Tomikawa Naoki、Kashiwagi Korehito、Endo Chihiro、Tanaka Satoshi、Sawada Norimasa、Watabe Tetsuya、Higashi Tomohito、Chiba Hideki
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 116 Issue: 49 Pages: 24600-24609

    • DOI

      10.1073/pnas.1913346116

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of S100A14 as a metastasis-promoting molecule in a murine organotropic metastasis model2019

    • Author(s)
      Sugino Takashi、Ichikawa-Tomikawa Naoki、Tanaka Mizuko、Shishito Namiko、Miura Tomiko、Abe Masato、Muramatsu Koji、Oishi Takuma、Kakuda Yuko、Kawata Takuya、Akiyama Yasuto
    • Journal Title

      Clinical & Experimental Metastasis

      Volume: 36 Issue: 4 Pages: 411-422

    • DOI

      10.1007/s10585-019-09979-w

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Differential expression of a stress‐regulated gene Nr4a2 characterizes early‐ and late‐born hippocampal granule cells2019

    • Author(s)
      Imura Tetsuya、Kobayashi Yasuyuki、Suzutani Ken、Ichikawa‐Tomikawa Naoki、Chiba Hideki
    • Journal Title

      Hippocampus

      Volume: 29 Issue: 6 Pages: 539-549

    • DOI

      10.1002/hipo.23045

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed

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Published: 2017-04-28   Modified: 2022-12-28  

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