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Inactivation of IFN-induced chemokines by DPP4 and its clinical significance in oral cancer

Research Project

Project/Area Number 20K10102
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionMeikai University

Principal Investigator

MORI Kazumasa  明海大学, 歯学部, 准教授 (80372902)

Co-Investigator(Kenkyū-buntansha) 廣井 美紀  明海大学, 歯学部, 准教授 (30419717)
大森 喜弘  明海大学, 歯学部, 教授 (50194311)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
KeywordsDPP4 / 口腔扁平上皮癌 / CXCL10 / IFN誘導生ケモカイン / T細胞 / IFN誘導性ケモカイン
Outline of Research at the Start

免疫チェックポイント阻害剤による免疫療法は、口腔癌を含めた頭頸部癌に対してもその有効性が示され、実地臨床で用いられている。しかしその奏功率は、十分に高いものとはいえない。その原因の一つとして、抗腫瘍作用を有するCD8陽性細胞傷害性T細胞(CTL)の腫瘍局所への浸潤低下が挙げられる。本研究では、その浸潤低下のメカニズムの解明を目指し、腫瘍局所におけるケモカインの不活化酵素ジペプチジルペプチダーゼ4(DPP4)の関与について検討する。

Outline of Final Research Achievements

Stable expression cell lines of IFN-inducible chemokines CXCL9, CXCL10, and CXCL11 were constructed, and the following results were obtained regarding their antitumor effects. (1) CXCL9- and CXCL11-expressing cells inhibited tumor growth, but CXCL10 did not show any inhibitory effect. 2) Tumor tissues expressing CXCL9 and CXCL11 showed increased expression of NK1.1 and decreased expression of VEGF. 3) Tumor tissues expressing CXCL10 showed increased expression of DPP4, a chemokine cleaving enzyme. These results suggest that the anti-tumor effects of IFN-inducible chemokines, CXCL9, CXCL10, and CXCL11, are different and depend on the expression of DPP4, which cleaves chemokines, and the sensitivity of chemokines to this enzyme.

Academic Significance and Societal Importance of the Research Achievements

IFN誘導性ケモカインCXCL10の腫瘍増殖能の要因を検討した.結果,CXCL10発現腫瘍組織は,ケモカインを切断する酵素DPP4の発現が多く認められた.これは DPP4によって切断された短縮型CXCL10が,癌関連線維芽細胞(CAFs)の動員あるいは分化に関与している可能性を考えた.現在癌治療に用いられる免疫チェックポイント阻害剤による免疫療法の有効性は, 腫瘍組織への細胞傷害性T細胞(CTL)の動員が必要であり, その動員にはIFN誘導性ケモカインが重要で,本研究で得られた知見は, DPP4を標的とした新たな免疫療法の奏功性改善の分子基盤の理解に貢献するものと考えている.

Report

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

    (7 results)

All 2022 2021

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (5 results)

  • [Journal Article] Enhanced Cytotoxic Effects in Human Oral Squamous Cell Carcinoma Cells Treated with Combined Methyltransferase Inhibitors and Histone Deacetylase Inhibitors2022

    • Author(s)
      Ryosuke Ushio, Miki Hiroi, Ari Matsumoto, Kazumasa Mori, Nobuharu Yamamoto, Yoshihiro Ohmori
    • Journal Title

      Biomedicines

      Volume: 10 Issue: 4 Pages: 763-763

    • DOI

      10.3390/biomedicines10040763

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Simultaneous Expression of Th1- and Treg-Associated2021

    • Author(s)
      Hana Yamaguchi, Miki Hiroi, Kazumasa Mori et al
    • Journal Title

      Cancers

      Volume: 13 Issue: 8 Pages: 1835-1835

    • DOI

      10.3390/cancers13081835

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] IFN誘導性ケモカインCXCL9、CXCL10、CXCL11のマウス扁平上皮癌細胞に対する抗腫瘍作用の違い2022

    • Author(s)
      松本 安吏, 森 一将, 廣井 美紀, 嶋田 淳, 山本 信治, 大森 喜弘
    • Organizer
      第76回 NPO法人日本口腔科学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 口腔癌におけるMyeloid-derived suppressor cellとケモカインの影響についての検討2022

    • Author(s)
      森 一将 松本安吏 廣井美紀 山本信治 大森喜弘
    • Organizer
      第67回公益社団法人日本口腔外科学会総会・学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 口腔癌における腫瘍関連マクロファージの分化誘導に関わる浸潤T細胞の検討2021

    • Author(s)
      森 一将 松本安吏 廣井美紀 山本信治 大森喜弘
    • Organizer
      日本口腔外科学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Investigation of chemokines involved in the infiltration of myeloid-derived suppressor cells (MDSCs) in the mouse tongue cancer model2021

    • Author(s)
      Kazumasa MORI, Miki HIROI, Ari MATSUMOTO, Ryousuke USHIO, Yoshihiro OHMORI
    • Organizer
      Japanese Association for Oral Biology
    • Related Report
      2021 Research-status Report
  • [Presentation] Differential antitumor effects of IFN-inducible chemokines CXCL9, CXCL10 and CXCL11 on mouse squamous cell carcinoma2021

    • Author(s)
      Ari MATSUMOTO, Kazumasa MORI, Miki HIROI, Yoshihiro OHMORI
    • Organizer
      Japanese Association for Oral Biology
    • Related Report
      2021 Research-status Report

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

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