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Construction of new therapy method that targets EphA4 which is activated by chemotherapeutic reagents

Research Project

Project/Area Number 17K11881
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Surgical dentistry
Research InstitutionGunma University (2018-2019)
University of the Ryukyus (2017)

Principal Investigator

Kina Shinichiro  群馬大学, 大学院医学系研究科, 講師 (40422422)

Co-Investigator(Kenkyū-buntansha) 金城 貴夫  琉球大学, 医学部, 教授 (30284962)
仲宗根 敏幸  琉球大学, 医学部附属病院, 講師 (40381214)
喜名 美香  群馬大学, 医学部附属病院, 医員 (80578914)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords高分化型腫瘍 / EphA4 / 高分化型 / 抗癌剤耐性 / チロシンリン酸化 / 抗がん剤
Outline of Final Research Achievements

Well-differentiated regions of the tumor are intrinsically resistant to chemotherapy. Receptor tyrosine kinase erythropoietin-producing human hepatocellular receptor A4 (EphA4) protein is highly expressed in the well-differentiated tumor-derived cervical cancer cell line , but not in poorly differentiated tumor-derived cervical cancer cell lines. Pharmacological inhibition of EphA4 increased cisplatin-induced cell death in Caski cells.Mechanistically, cisplatin induces chemotherapy resistance of Caski cells by upregulating Lyn, a Src family kinase (SFK) that interacts with EphA4, through a pathway involving reactive oxygen species. Thus, the reactive oxygen species-SFK-EphA4 axis presents new potential drug targets for chemotherapy resistance.

Academic Significance and Societal Importance of the Research Achievements

抗癌剤治療においては、腫瘍のうち抗癌剤感受性が低い部分が、抗癌剤治療後も残存し、その後の再発の原因となっている。そのため、そのような腫瘍の残存を極力排除することが抗癌剤治療の成果をより高めることになる。高分化型領域は、抗癌剤耐性であることが知られている。我々は、高分化型腫瘍細胞株を用いて、高分化型腫瘍の抗癌剤耐性機構を解明し、その過程には、受容体型チロシンキナーゼEphA4 が関与していることを明らかにした。この結果は、EphA4 が抗癌剤治療の効果を高める新たなターゲットとなることを示唆している。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2020 2019 2018 2017

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (1 results)

  • [Journal Article] Fyn‐mediated phosphorylation of Pyk2 promotes its activation and dissociation downstream of gonadotropin‐releasing hormone receptor2020

    • Author(s)
      Higa‐Nakamine Sayomi、Okitsu‐Sakurayama Shiho、Kina Shinichiro、Yamamoto Hideyuki
    • Journal Title

      The FEBS Journal

      Volume: - Issue: 16 Pages: 1-12

    • DOI

      10.1111/febs.15231

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] K1 gene transformation activities in AIDS-related and classic type Kaposi’s sarcoma: Correlation with clinical presentation2019

    • Author(s)
      Tamanaha-Nakasone Ayumi、Uehara Karina、Tanabe Yasuka、Ishikawa Haruna、Yamakawa Natsuko、Toyoda Zensei、Kurima Kiyoto、Kina Shinichiro、Tsuneki Masayuki、Okubo Yuko、Yamaguchi Sayaka、Utsumi Daisuke、Takahashi Kenzo、Arakawa Hirofumi、Arasaki Akira、Kinjo Takao
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 1-12

    • DOI

      10.1038/s41598-019-42763-0

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Outcomes after up-front surgery and metronomic neoadjuvant chemotherapy with S-1 or UFT for early tongue squamous cell carcinoma2018

    • Author(s)
      Kina Shinichiro、Nakasone Toshiyuki、Kinjo Takao、Nimura Fumikazu、Sunagawa Nao、Arasaki Akira
    • Journal Title

      Clinical Oral Investigations

      Volume: - Issue: 6 Pages: 1-6

    • DOI

      10.1007/s00784-018-2689-2

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Targeting EphA4 abrogates intrinsic resistance to chemotherapy in well-differentiated cervical cancer cell line.2018

    • Author(s)
      Kina S, Kinjo T, Liang F, Nakasone T, Yamamoto H, Arasaki A.
    • Journal Title

      Eur J Pharmacol.

      Volume: 840 Pages: 70-78

    • DOI

      10.1016/j.ejphar.2018.09.031

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 受容体型チロシンキナーゼEphA4 の高分化型腫瘍における抗癌剤耐性能について2017

    • Author(s)
      喜名 振一郎、山本 秀幸、仲嶺 三代美、鳥原 英嗣、金城 貴夫、新崎 章
    • Organizer
      2017年度生命科学系学会合同年次大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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