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Induction of stem cell features by S100A4/NMII signals in uterine carcinosarcoma

Research Project

Project/Area Number 20K07413
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49020:Human pathology-related
Research InstitutionKitasato University

Principal Investigator

Saegusa Makoto  北里大学, 医学部, 教授 (00265711)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsS100A1 / p53 / MDM2 / 子宮内膜癌 / p53 / 子宮内膜癌細胞 / アポトーシス / 増殖 / 子宮癌肉腫 / S100A4 / 非筋細胞ミオシンII / がん幹細胞 / 子宮がん肉腫
Outline of Research at the Start

①S100A4による子宮内膜がん細胞でのがん幹細胞誘導過程で、研究代表者の独自の手法である免疫沈降とshotgun proteomics法の併用により、そのパートナー分子として同定したNMIIを用い、②S100A4/NMIIシグナルによるがん肉腫幹細胞誘導・維持の観点から子宮がん肉腫発生過程の分子機構を解明し、そして、③新たにがん肉腫・間質相互作用による形成されるがん肉腫幹細胞ニッチを病理組織標本上で可視化する。

Outline of Final Research Achievements

S100A1 interacted with MDM2 but not p53 in endometrial cancer (Em Ca) cell lines. Treatment of cells stably overexpressing S100A1 with Nutlin-3A, an inhibitor of the p53/MDM2 interaction, increased expression of p53-target genes including p21waf1 and BAX. S100A1 overexpression enhanced cellular migration, but also sensitized cells to the antiproliferative and proapoptotic effects of Adriamycin, a genotoxic agent; these phenotypes were abrogated when S100A1 was knocked down using shRNA. In clinical samples from normal endometrium, S100A1 expression was significantly higher in endometrial glandular cells of the middle/late secretory and menstrual stages when compared to cells in the proliferative phases; high S100A1 was also positively correlated with expression of MDM2 and p21waf1 and apoptotic status, and inversely correlated with Ki-67 scores. However, such correlations were absent in Em Ca tissues.

Academic Significance and Societal Importance of the Research Achievements

本研究は、コロナ渦による研究環境の変化等に計画通りに進めることが困難となった。そこで、子宮がん肉腫の起源である子宮内膜癌を対象に、まずは、S100ファミリーメンバーが子宮内膜腺細胞の恒常性維持や発がんに関与する可能性について、S100A1とp53/MDM2との関連した結果、S100A1 の発現は、正常子宮内膜組織の月経周期において、MDM2 との相互作用を通じて細胞増殖、アポトーシス、移動を調節している。一方、子宮内膜癌では、このような機能相関が破綻していることを明らかした。この研究成果は、子宮がん肉腫発生過程におけるS100ファミリーの機能を解明の第一段階で、今後は当初の研究目的を検証する。

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

    (2 results)

All 2023 2022

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

  • [Journal Article] Functional interaction between S100A1 and MDM2 may modulate p53 signaling in normal and malignant endometrial cells2022

    • Author(s)
      Nakagawa M, Higuchi S, Hashimura M, Oguri Y, Matsumoto T, Yokoi A, Ishibashi Y, Ito T, Saegusa M
    • Journal Title

      BMC Cancer

      Volume: 22 Issue: 1 Pages: 184-184

    • DOI

      10.1186/s12885-022-09249-1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 子宮内膜ならびに子宮内膜癌におけるS100A1とMDM2の相互作用が p53機能に及ぼす影響の検討2023

    • Author(s)
      栃本 昌孝,中川 茉祐,橋村 美紀, 小栗 康子,松本 俊英,横井愛香,石橋 侑, 伊藤 隆士,三枝 信
    • Organizer
      大12回日本病理学会総会
    • Related Report
      2022 Research-status Report

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

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