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Exploration of transcription factors that induce tumor-promoting subsets of breast carcinoma-associated fibroblasts

Research Project

Project/Area Number 22K20837
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0901:Oncology and related fields
Research InstitutionJuntendo University

Principal Investigator

Mezawa Yoshihiro  順天堂大学, 医学部, 助教 (50966538)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords癌微小環境 / 癌関連線維芽細胞 / 乳癌 / 転写因子 / エピゲノム解析
Outline of Research at the Start

癌微小環境に存在する癌関連線維芽細胞(carcinoma-associated fibroblasts: CAFs)は、腫瘍の線維化や炎症を促進して癌の悪性化に寄与する。代表的なCAFsの亜集団として、線維化を促進する筋線維芽細胞性CAFsと、炎症促進性CAFsが知られている。しかしながら、正常組織に常在する線維芽細胞がそれらに分化転換する分子メカニズムの詳細は不明である。本研究では、CAFsで高発現している転写因子群を同定し、その機能解析を通して癌促進的CAFs亜集団の出現メカニズムの解明を目指す。

Outline of Final Research Achievements

In the tumor-microenvironment, carcinoma-associated fibroblasts (CAFs) promote regulating the malignancy and antitumor immunity through promoting desmoplastic reaction and tumor inflammation. This study aimed to identify transcription factors governing the properties of cancer-promoting subpopulations in breast cancer. Transcriptome analysis, epigenome analysis of CAF cell lines, and meta-analysis of public transcriptome data of human breast cancers were conducted. As the results, we reveal various transcription factors that expression and activity were increased in CAF subpopulations. The present study provides fundamental information for developing CAF-targeted therapy.

Academic Significance and Societal Importance of the Research Achievements

CAFは癌細胞の増殖、浸潤・転移、治療抵抗性、血管新生、腫瘍免疫抑制などを通じて癌促進的な機能が多く知られている。一方、癌抑制的な機能も報告されており、CAFの亜集団の特性の理解がCAFの機能制御に基づいた治療の実現には必須と考えられるが、創薬応用には十分な知見が集積していない。本研究では、細胞の性質を規定する最も重要な要素である転写因子に着目し、乳癌CAFの不均一性をmRNAレベルで解析し、亜集団形成に関与することが示唆される転写因子を複数見出した。これらの知見はCAF亜集団を制御し、治療効果を増加させる手法の開発に向けて重要な意義を持つ。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (3 results)

All 2023

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (1 results)

  • [Journal Article] Glutamine deficiency drives transforming growth factor‐β signaling activation that gives rise to myofibroblastic carcinoma‐associated fibroblasts2023

    • Author(s)
      Mezawa Yoshihiro、Wang Tingwei、Daigo Yataro、Takano Atsushi、Miyagi Yohei、Yokose Tomoyuki、Yamashita Toshinari、Yang Liying、Maruyama Reo、Seimiya Hiroyuki、Orimo Akira
    • Journal Title

      Cancer Science

      Volume: 114 Issue: 11 Pages: 4376-4387

    • DOI

      10.1111/cas.15955

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Increased <scp>RUNX3</scp> expression mediates tumor‐promoting ability of human breast cancer‐associated fibroblasts2023

    • Author(s)
      Koyama Yu、Okazaki Hiroya、Shi Yang、Mezawa Yoshihiro、Wang Zixu、Sakimoto Mizuki、Ishizuka Akane、Ito Yasuhiko、Koyama Takumi、Daigo Yataro、Takano Atsushi、Miyagi Yohei、Yokose Tomoyuki、Yamashita Toshinari、Sugahara Keisuke、Hino Okio、Yang Liying、Maruyama Reo、Katakura Akira、Yasukawa Takehiro、Orimo Akira
    • Journal Title

      Cancer Medicine

      Volume: 12 Issue: 17 Pages: 18062-18077

    • DOI

      10.1002/cam4.6421

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] がん関連線維芽細胞CAFsで見出した転写因子LEF1の異常発現が引き起こすがん悪性化促進メカニズムの研究2023

    • Author(s)
      岡崎寛弥,施陽,咲本瑞来,小山侑,王子旭,石塚朱音,目澤義弘,梶野一徳,片倉朗,安川武宏,折茂彰
    • Organizer
      第82回日本学会学術集会
    • Related Report
      2023 Annual Research Report

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Published: 2022-09-01   Modified: 2025-01-30  

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