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The development of targeted therapy to ion transporters of esophageal cancer stem cells

Research Project

Project/Area Number 17H07014
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Digestive surgery
Research InstitutionKyoto Prefectural University of Medicine

Principal Investigator

Kudou Michihiro  京都府立医科大学, 京都市上京区, 専攻医 (20804264)

Research Collaborator Shiozaki Atsushi  京都府立医科大学, 付属病院 外科学教室 消化器外科学部門, 学内講師 (40568086)
Kosuga Toshiyuki  京都府立医科大学, 付属病院 外科学教室 消化器外科学部門, 助教 (00457946)
Matsumoto Yoshihisa  京都府立医科大学, 付属病院 外科学教室 消化器外科学部門, 大学院生
Marunaka Yoshinori  京都府立医科大学, 名誉教授
Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords食道癌 / 癌幹細胞 / 分子標的療法 / イオン輸送体 / アポトーシス / 分子標的治療 / 癌 / 生理学 / 薬学
Outline of Final Research Achievements

Gene profiles of esophageal cancer stem cells (CSCs), which were isolated from human cell lines, were analysed using a micro-array method, revealing the gene over-expression of ion transporters which were associated with the regulation of intracellular Ca2+ concentration [Ca2+]i (ATP2A1, ATP2A3, ORAI3, and S100). Previous studies described that [Ca2+]i was strongly related to the mechanism of apoptosis. Therefore, we developed a novel hypothesis that the resistance of apoptosis in CSCs is derived from the activated regulation of [Ca2+]i via the over-expressed ion transpoters. To validate the hypothesis, the drug sensitivity assay of thapsigargin(TGN), a specific inhibitor of ATP2A1, was performed, resulting in the strong suppression effect of CSCs proliferation. In conclusion, ATP2A1 in CSCs of esophageal cancer can be a novel therapeutic target.

Academic Significance and Societal Importance of the Research Achievements

食道癌における抗腫瘍治療は未だ効果は限定的であり、治療に対する耐性化や遠隔期の再発などが問題として挙げられている。これらには癌幹細胞が関連するとされ、治療標的として注目されている。今回の我々の研究では、癌幹細胞のイオン環境という独創的なアプローチで癌幹細胞の治療耐性獲得機序の解明を試み、Ca2+イオン動態、高発現Ca2+イオン輸送体が関連している可能性を見出した。これを新たなに標的とする治療が開発できれば、これまでにない全く新しい機序の標的治療が可能であり、一般化学療法と組み合わせることで相乗的な効果が得られる可能性がある。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • Research Products

    (9 results)

All 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (7 results)

  • [Journal Article] Functional analysis and clinical significance of sodium iodide symporter expression in gastric cancer2018

    • Author(s)
      Shiozaki Atsushi、Ariyoshi Yosuke、Iitaka Daisuke、Kosuga Toshiyuki、Shimizu Hiroki、Kudou Michihiro、Konishi Tomoki、Shoda Katsutoshi、Arita Tomohiro、Konishi Hirotaka、Komatsu Shuhei、Kubota Takeshi、Fujiwara Hitoshi、Okamoto Kazuma、Kishimoto Mitsuo、Konishi Eiichi、Marunaka Yoshinori、Ichikawa Daisuke、Otsuji Eigo
    • Journal Title

      Gastric Cancer

      Volume: 22 Issue: 3 Pages: 473-485

    • DOI

      10.1007/s10120-018-0874-2

    • NAID

      40021884050

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anion exchanger 2 suppresses cellular movement and has prognostic significance in esophageal squamous cell carcinoma2018

    • Author(s)
      Shiozaki A, Hikami S, Ichikawa D, Kosuga T, Shimizu H, Kudou M, Yamazato Y, Kobayashi T, Shoda K, Arita T, Konishi H, Komatsu S, Kubota T, Fujiwara H, Okamoto K, Kishimoto M, Konishi E, Marunaka Y, Otsuji E
    • Journal Title

      Oncotarget

      Volume: 9 Issue: 40 Pages: 25993-26006

    • DOI

      10.18632/oncotarget.25417

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Expression and role of Na/K ATPase in esophageal squamous cell carcinoma2018

    • Author(s)
      Toshiyuki Kosuga
    • Organizer
      The 77th Annual Meeting of the Japanese Cancer Association
    • Related Report
      2018 Annual Research Report
  • [Presentation] The role of Aquaporin 1 in esophageal squamous cell carcinoma2018

    • Author(s)
      Masato Mitsuda
    • Organizer
      The 77th Annual Meeting of the Japanese Cancer Association
    • Related Report
      2018 Annual Research Report
  • [Presentation] Functional analysis and prognostic value of sodium iodide symporter (NIS) in gastric cancer2018

    • Author(s)
      Atsushi Shiozaki
    • Organizer
      The 77th Annual Meeting of the Japanese Cancer Association
    • Related Report
      2018 Annual Research Report
  • [Presentation] Enhancement of paclitaxel uptake into gastric cancer cells via the hypotonicity-induced cell volume regulation2018

    • Author(s)
      Toshiyuki Kosuga
    • Organizer
      The 77th Annual Meeting of the Japanese Cancer Association
    • Related Report
      2018 Annual Research Report
  • [Presentation] Regulatory Volume Decrease was suppressed by hypothermia stress in gastric cancer cells2018

    • Author(s)
      Yuzo Yamazato
    • Organizer
      The 77th Annual Meeting of the Japanese Cancer Association
    • Related Report
      2018 Annual Research Report
  • [Presentation] Anticancer effects of heat shock on liver cancer via autophagic degradation of aquaporin 52018

    • Author(s)
      Keita Katsurahara
    • Organizer
      The 77th Annual Meeting of the Japanese Cancer Association
    • Related Report
      2018 Annual Research Report
  • [Presentation] The development of targeted therapy to ion transporters of esophageal cancer stem cells2017

    • Author(s)
      Michihiro Kudou
    • Organizer
      日本癌学会
    • Related Report
      2017 Annual Research Report

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Published: 2017-08-25   Modified: 2020-03-30  

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