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Identification of a novel cancer stem cell-related gene in cholangiocarcinoma

Research Project

Project/Area Number 21K15495
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionMiyagi Prefectural Hospital Organization Miyagi Cancer Center

Principal Investigator

Fujimori Haruna  地方独立行政法人宮城県立病院機構宮城県立がんセンター(研究所), がん幹細胞研究部, 研究員 (80882935)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2022: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsPDX / FAXC / ANXA2 / 胆管癌 / SRC / 造腫瘍 / がん幹細胞 / 腫瘍不均一性 / 分子間相互作用 / 造腫瘍能
Outline of Research at the Start

ヘテロな細胞集団である癌組織には、腫瘍構築能や治療抵抗性を示す「癌幹細胞」の亜集団が存在する。抗癌幹細胞治療が望まれるが実用例は少なく、癌幹細胞が維持される機構も不明である。そこで申請者らは、難治性癌である胆管癌で、新規癌幹細胞遺伝子を探索する。これにより、癌幹細胞形質の維持機構を明らかにし、胆管癌の新規治療標的を開拓する。そこでまずは、手術検体から胆管癌PDXを作製し、免疫不全マウス皮下で19代にわたり継代した。継代に伴い、一定の腫瘍サイズに至る期間は短くなり、すなわち癌幹細胞が増加したと考えられ、発現が変動する遺伝子群が見出された。これらは癌幹細胞関連遺伝子群と予想され、解析を進める。

Outline of Final Research Achievements

Tumor heterogeneity is a well-known characteristic of cancer. Some cancer cells that survive after therapy are highly tumorigenic and contribute to metastasis and recurrence. To develop a therapeutic strategy targeting the highly tumorigenic cancer cells, we screened for a novel gene associated with tumorigenicity in cholangiocarcinoma (CCA). As a result, we identified a failed axon connection homolog (FAXC), whose function is unknown in mammals, by analyzing serially passaged CCA xenograft models. Knockdown of FAXC reduced subcutaneous tumorigenicity in immunodeficient mice. In addition, FAXC bound to the tumor-promoting genes annexin A2 (ANXA2) and c-SRC at the mitochondria and enhanced SRC-dependent ANXA2 phosphorylation. Transcriptome data from a xenografted CCA cell line revealed that FAXC correlated with hypoxia-related genes. Taken together, these findings further our understanding of CCA tumorigenesis.

Academic Significance and Societal Importance of the Research Achievements

FAXCはこれまで一切報告のなかった機能未知遺伝子で、癌との関連報告も初めてである。そのため、今回見出した現象はすべてがん生物学的に新しく、また新規の治療標的として期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (9 results)

All 2024 2023 2022

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (4 results)

  • [Journal Article] <scp>FAXC</scp> interacts with <scp>ANXA2</scp> and <scp>SRC</scp> in mitochondria and promotes tumorigenesis in cholangiocarcinoma2024

    • Author(s)
      Fujimori Haruna、Shima‐Nakamura Mao、Kanno Shin‐Ichiro、Shibuya‐Takahashi Rie、Mochizuki Mai、Mizuma Masamichi、Unno Michiaki、Wakui Yuta、Abue Makoto、Iwai Wataru、Fukushi Daisuke、Satoh Kennich、Yamaguchi Kazunori、Shindo Norihisa、Yasuda Jun、Tamai Keiichi
    • Journal Title

      Cancer Science

      Volume: 115 Issue: 6 Pages: 1-14

    • DOI

      10.1111/cas.16140

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical and genomic features of non‐small cell lung cancer occurring in families2023

    • Author(s)
      Miyabe Shingo、Ito Shin、Sato Ikuro、Abe Jiro、Tamai Keiichi、Mochizuki Mai、Fujimori Haruna、Yamaguchi Kazunori、Shindo Norihisa、Shima Hiroshi、Yamazaki Tomoko、Abue Makoto、Okada Yoshinori、Yasuda Jun
    • Journal Title

      Thoracic Cancer

      Volume: 14 Issue: 10 Pages: 940-952

    • DOI

      10.1111/1759-7714.14825

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] RELA is required for CD271 expression and stem-like characteristics in hypopharyngeal cancer2022

    • Author(s)
      Nakazato Akira、Mochizuki Mai、Shibuya-Takahashi Rie、Fujimori Haruna、Fujii Keitaro、Saijoh Satoshi、Morita Shinkichi、Yamazaki Tomoko、Imai Takayuki、Sato Ikuro、Satoh Kennichi、Yamaguchi Kazunori、Sugamura Kazuo、Yasuda Jun、Matsuura Kazuto、Shojaku Hideo、Asada Yukinori、Tamai Keiichi
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 17751-17751

    • DOI

      10.1038/s41598-022-22736-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Establishment of a monoclonal antibody against glycosylated CD271 specific for cancer cells in immunohistochemistry2022

    • Author(s)
      Fujii Keitaro、Morita Shinkichi、(中略)、Yasuda Jun、Satoh Kennichi、Sato Ikuro、Saito‐Koyama Ryoko、Fujishima Fumiyoshi、Sasano Hironobu、Kato Yukinari、Matsuura Kazuto、Asada Yukinori、Tamai Keiichi
    • Journal Title

      Cancer Science

      Volume: 113 Issue: 8 Pages: 2878-2887

    • DOI

      10.1111/cas.15340

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Autocleavage of separase suppresses its premature activation by promoting binding to cyclin B12022

    • Author(s)
      Shindo Norihisa、Kumada Kazuki、Iemura Kenji、Yasuda Jun、Fujimori Haruna、Mochizuki Mai、Tamai Keiichi、Tanaka Kozo、Hirota Toru
    • Journal Title

      Cell Reports

      Volume: 41 Issue: 9 Pages: 111723-111723

    • DOI

      10.1016/j.celrep.2022.111723

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 胆管癌を進展させる新規遺伝子FAXCは、SRCによるANXA2リン酸化を増強する2023

    • Author(s)
      藤盛春奈、高橋-渋谷 莉恵、菅野新一郎、望月麻衣、進藤軌久、山口壹範、安田純、玉井恵一
    • Organizer
      第46回 日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 胆管癌進展に寄与する新規分子FAXCの細胞内動態2023

    • Author(s)
      藤盛 春奈、高橋-渋谷 莉恵、菅野新一郎、望月麻衣、進藤軌久、山口壹範、安田純、玉井恵一
    • Organizer
      第96回 日本生化学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] FAXCは胆管癌の腫瘍形成に寄与する2023

    • Author(s)
      藤盛 春奈、菅野新一郎、高橋-渋谷 莉恵、望月麻衣、進藤軌久、山口壹範、安田純、玉井恵一
    • Organizer
      第82回 日本癌学会学術総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 胆管癌を進展させる新規遺伝子Xの同定2022

    • Author(s)
      藤盛春奈、高橋-渋谷莉恵、菅野新一郎、望月麻 衣、進藤軌久、山口壹範、安田純、玉井恵一
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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