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Mechanisms of metastasis promoted by cancer associated fibroblast via Wnt signal pathway in colorectal cancer

Research Project

Project/Area Number 19K09188
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionTohoku University

Principal Investigator

MUSHA Hiroaki  東北大学, 医学系研究科, 大学院非常勤講師 (30724322)

Co-Investigator(Kenkyū-buntansha) 唐澤 秀明  東北大学, 大学病院, 助教 (30547401)
山村 明寛  東北大学, 大学病院, 助教 (30814678)
内藤 剛  東北大学, 医学系研究科, 准教授 (50291258)
大沼 忍  東北大学, 大学病院, 助教 (70451565)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords癌関連線維芽細胞 / Wnt2 / Wnt5a / 大腸癌 / Wntシグナル
Outline of Research at the Start

本研究は、“癌関連線維芽細胞”に着目し、癌関連線維芽細胞がWntシグナル経路を介して制御する大腸癌の転移機構を明らかにする事を目的とし、①in vitroでの検証、②手術検体を用いた免疫組織化学、③大腸癌マウス同所移植モデルによるin vivoでの検討を行い、Wntシグナルによる大腸癌の進展促進の機序を具体的に明らかにする。

Outline of Final Research Achievements

Cancer-associated fibroblasts (CAFs) were obtained from paired CAFs and normal fibroblasts in colorectal cancer (CRC) tissue. Gene expression analysis of CAFs revealed that Wnt2 and Wnt5a were highly expressed in colorectal CAFs. We performed immunohistochemical analysis on Wnt2 and Wnt5a in CRC patients who underwent surgery. High expression of Wnt2 and Wnt5a were significantly associated with the factors which related to cancer progression or metastasis.
Subsequent in vitro analyses revealed that cancer cell invasion and migration were significantly decreased in the conditioned medium corrected from immortalized CAFs transfected with siRNA targeting Wnt2. Besides, cancer cell proliferation and migration were significantly increased by stimulation with human recombinant Wnt5a protein. Our findings suggest that Wnt2 and Wnt5a derived CAFs enhances CRC cell invasion and migration and play a crucial role in CRC progression and have potential as a target of anti-cancer therapies.

Academic Significance and Societal Importance of the Research Achievements

大腸癌の進行及び転移において癌関連線維芽細胞といわれる癌組織周囲に存在する線維芽細胞が重要な役割を行うことが報告されている。今回の研究ではこの癌関連線維芽細胞における遺伝子発現を解析することにより、Wnt2およびWnt5aが高発現していることを見出した。この遺伝子で大腸癌細胞株を刺激すると、癌の浸潤、転移が促進される可能性が示された。がん細胞そのものだけでなく、この癌関連線維芽細胞が癌の周囲でWnt2やWnt5aを介してがん細胞に働きかけて、癌の進行を促進している可能性を示している。これらの癌周囲の微小環境も新たな治療のターゲットとなる可能性が示唆された。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (3 results)

All 2021 2019

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

  • [Journal Article] Wnt5a in cancer-associated fibroblasts promotes colorectal cancer progression2021

    • Author(s)
      Hirashima Tomoaki、Karasawa Hideaki、Aizawa Takashi、Suzuki Takashi、Yamamura Akihiro、Suzuki Hideyuki、Kajiwara Taiki、Musha Hiroaki、Funayama Ryo、Shirota Matsuyuki、Ohnuma Shinobu、Nakayama Keiko、Unno Michiaki
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 568 Pages: 37-42

    • DOI

      10.1016/j.bbrc.2021.06.062

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cancer‐associated fibroblasts secrete Wnt2 to promote cancer progression in colorectal cancer2019

    • Author(s)
      Aizawa Takashi、Karasawa Hideaki、Funayama Ryo、Shirota Matsuyuki、Suzuki Takashi、Maeda Shimpei、Suzuki Hideyuki、Yamamura Akihiro、Naitoh Takeshi、Nakayama Keiko、Unno Michiaki
    • Journal Title

      Cancer Medicine

      Volume: 8 Issue: 14 Pages: 6370-6382

    • DOI

      10.1002/cam4.2523

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 大腸癌同所移植モデルにおける癌関連線維芽細胞のWnt2発現はリンパ節転移と関連する2021

    • Author(s)
      唐澤秀明,三浦康,佐々木宏之,小林実,梶原大輝,亀井尚,大沼忍,海野倫明
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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