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Functional analyses of FGFR1(IIIc) in oral squamous cell carcinoma cells

Research Project

Project/Area Number 20K18691
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionUniversity of Yamanashi

Principal Investigator

Hotta Asami  山梨大学, 医学部附属病院, 医員 (00754607)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsFGFR1c isoform / EMT / ZEB1/2 / FGF2 / 口腔扁平上皮癌 / CSC / FGFR1c isoform / FGFR
Outline of Research at the Start

EMTの研究はすでに乳癌細胞などで進められ、EMTは悪性度と正の相関を示す。そこで、本研究では、先述の口腔癌由来細胞株ならびに対比として乳癌細胞を用い、FGFR bisoformの発現とc-isoformの発現変化を調べたうえで、それぞれの浸潤能を評価する。次にFGFRc-isoformに関わると考えられるEMTの分子マーカー(E-cadhrin,N-cadherin,Snail,Slug,ZEB1, ZEB2, Twistなど)の発現を検討し、浸潤性・運動性を指標とした悪性度との関連性を検討する。

Outline of Final Research Achievements

We show that the mesenchymal-like phenotypes of oral squamous cell carcinoma (OSCC) cells are dependent on autocrine FGF-FGFR signaling. Mesenchymal-like OSCC cells express low levels of ESRP1/2 and high levels of ZEB1/2, resulting in constitutive expression of the IIIc-isoform of FGFR, FGFR(IIIc). By contrast, epithelial-like OSCC cells showed opposite expression profiles for these proteins and constitutive expression of the IIIb-isoform of FGFR2, FGFR2(IIIb). Importantly, ERK was constitutively phosphorylated through FGFR1(IIIc), which was activated by factors secreted autonomously by mesenchymal-like OSCC cells and involved in sustained high-level expression of ZEB1. Antagonizing FGFR1 with either an inhibitor or siRNAs considerably repressed ZEB1 expression and restored epithelial-like traits.

Academic Significance and Societal Importance of the Research Achievements

最近FGFRとN-cadherinの結合は双方の膜上の安定性を高めN-cadherinへの接着を増強させ運動性を抑制する事が報告された。間質内を模倣しているとはいえないが、FGFR1IIIc とN-cadherinの相互作用によってあらたなシグナルが構築されている可能性は高い。また膀胱癌及び結腸癌においてE-cadherinが減少したFGFR2IIIbの発現低下が悪性形質に貢献していることが報告された。IIIbが上皮細胞特異的なE-cadherinと結合しEMTを抑制し逆にMETを誘導するようなシグナルを伝達しているとするとこのような会合を制御するような分子も将来治療薬として有用かもしれない。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (4 results)

All 2022 2021 2020

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

  • [Journal Article] Ets family proteins regulate the EMT transcription factors Snail and ZEB in cancer cells2022

    • Author(s)
      Ichikawa Mai Koizumi、Endo Kaori、Itoh Yuka、Osada Asami Hotta、Kimura Yujiro、Ueki Koichiro、Yoshizawa Kunio、Miyazawa Keiji、Saitoh Masao
    • Journal Title

      FEBS Open Bio

      Volume: - Issue: 7 Pages: 1353-1364

    • DOI

      10.1002/2211-5463.13415

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 臍帯血移植後に生じたnon-gingival soft tissue growthsが自然消失した1例2022

    • Author(s)
      堀田麻実、竹川貴裕、小野すみれ、五味佳蓮、市川舞、藤本佳那、木村裕二郎、高山明裕、 井口蘭、諸井明徳、吉澤邦夫、上木耕一郎
    • Organizer
      日本口腔診断学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 口腔扁平上皮癌細胞における線維芽細胞増殖因子受容体阻害剤の細胞増殖抑制効果2021

    • Author(s)
      堀田麻実、吉澤邦夫、木村裕二郎、諸井明憲、上木耕一郎
    • Organizer
      第39回日本口腔腫瘍学会
    • Related Report
      2020 Research-status Report
  • [Presentation] 口腔扁平上皮癌細胞とFGF受容体IIIc isoform2020

    • Author(s)
      堀田麻実、吉澤邦夫、角田達哉、木村裕二郎、諸井明徳、上木耕一郎
    • Organizer
      第38回日本口腔腫瘍学会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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