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A novel signaling crosstalk between prostaglandin E2 receptors and IGF-1 receptor as a possible molecular target for antitumor therapy

Research Project

Project/Area Number 15K06873
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Tumor therapeutics
Research InstitutionMusashino University

Principal Investigator

TAKAHASHI Tetsuyuki  武蔵野大学, 薬学部, 講師 (00403692)

Co-Investigator(Kenkyū-buntansha) 上原 久典  徳島大学, 病院, 教授 (30263809)
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
KeywordsPGE2受容体 / がん / メタボローム / グルタミン酸代謝 / GGCT / シグナルクロストーク
Outline of Final Research Achievements

Using human pancreatic cancer cells BxPC-3, metabolome analyses were conducted. Compared with IGF-1-treated cells, EP2/EP4 antagonists-pretreated IGF-1-treated cells caused marked increases of metabolites in glutamate-metabolic pathway and coline- metabolic pathway, and apparent decreases of metabolites in pentose-phosphate-metabolic pathway. Of these, gamma-glutamylcyclotransferase (GGCT), which play a role in glutamate-metabolic pathway was further investigated.
Stable knockdown cells derived from BxPC-3 decreased cell growth rate and exhibited G0/G1 arrest. Furthermore, susceptibility to IGF-1-induced growth stimulation was also decreased, whereas effects of EP2/EP4 antagonists on abrogation of IGF-1-induced growth stimulation was diminished. Interestingly, GGCT overexpression in parental BxPC-3 also induced decrease of cell growth rate and ERK activation.

Academic Significance and Societal Importance of the Research Achievements

本研究によりPGE2受容体とIGF-1受容体のシグナルクロストークには細胞内代謝の変動が関与する事が初めて示された。本研究成果はがん細胞増殖における細胞内シグナル伝達と細胞内代謝変動の相互的な影響を強く示唆するものとして意義深いものである。
GGCTは、腫瘍増殖を促進すると考えられていたが、本検討により過剰な発現もむしろ細胞増殖速度の低下をもたらす事が示された。この結果は生理的発現レベルを逸脱させるとその高低に関わらず深刻な細胞毒性が発揮される事例でと考えられ、この点は、本邦をはじめ世界的に行われている分子標的治療(特に核酸医薬)の判定基準を考慮する際の一材料となる可能性があると考える。

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (12 results)

All 2018 2017 2016

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Acknowledgement Compliant: 1 results) Presentation (9 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Tsumura-Suzuki obese diabetic mice-derived hepatic tumors closely resemble human hepatocellular carcinomas in metabolism-related genes expression and bile acid accumulation.2018

    • Author(s)
      Takahashi T, Deuschle U, Taira S, Nishida T, Fujimoto M, Hijikata T, Tsuneyama K
    • Journal Title

      Hepatol Int.

      Volume: in press Issue: 3 Pages: 254-261

    • DOI

      10.1007/s12072-018-9860-3

    • NAID

      120006632776

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Daily Coffee Intake Inhibits Pancreatic Beta Cell Damage and Nonalcoholic Steatohepatitis in a Mouse Model of Spontaneous Metabolic Syndrome, Tsumura-Suzuki Obese Diabetic Mice.2017

    • Author(s)
      Watanabe S, Takahashi T, Ogawa H, Uehara H, Tsunematsu T, Baba H, Morimoto Y, Tsuneyama K.
    • Journal Title

      Metab Syndr Relat Disord.

      Volume: 15(4) Issue: 4 Pages: 170-177

    • DOI

      10.1089/met.2016.0114

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Histopathological characteristics of glutamine synthetase-positive hepatic tumor lesion in a mouse model of spontaneous metabolic syndrome (TSOD mouse).2016

    • Author(s)
      Tetsuyuki Takahashi, Takeshi Nishida, Hayato Baba, Hideki Hatta, Johji Imura, Mitsuko Sutoh, Syunji Toyohara, Ryoji Hokao, Syunsuke Watanabe, Hirohisa Ogawa, Hisanori Uehara, Koichi Tsuneyama.
    • Journal Title

      Mol. Clin. Oncol.

      Volume: 5 Pages: 267-270

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] ESR1発現欠損による乳がん悪性化の分子機序の解析2018

    • Author(s)
      青木寧々、青木夏美、木田ほのか、上原久典、高橋徹行、土方貴雄
    • Organizer
      日本薬学会第138年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 乳癌におけるがん免疫の応答性2018

    • Author(s)
      木田ほのか、青木寧々、高橋徹行、土方貴雄
    • Organizer
      日本薬学会第138年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ESR1発現欠損による乳がん悪性化の分子機序の解析2018

    • Author(s)
      71)青木寧々、青木夏美、木田ほのか、上原久典、高橋徹行、土方貴雄
    • Organizer
      日本薬学会第138年会
    • Related Report
      2017 Research-status Report
  • [Presentation] 乳癌におけるがん免疫の応答性2018

    • Author(s)
      72)木田ほのか、青木寧々、高橋徹行、土方貴雄
    • Organizer
      日本薬学会第138年会
    • Related Report
      2017 Research-status Report
  • [Presentation] SV40ウイルスタンパク質による感染細胞の自然免疫応答の調節2017

    • Author(s)
      土方貴雄、高橋徹行
    • Organizer
      日本薬学会第137年会
    • Place of Presentation
      仙台国際センター
    • Year and Date
      2017-03-27
    • Related Report
      2016 Research-status Report
  • [Presentation] SV40-miR-S1の内因性テロメラーゼ発現に対する影響2017

    • Author(s)
      高橋徹行、岡山由紀子、土方貴雄
    • Organizer
      日本薬学会第137年会
    • Place of Presentation
      仙台国際センター
    • Year and Date
      2017-03-25
    • Related Report
      2016 Research-status Report
  • [Presentation] 長期飼育によって発症するTSODマウス肝腫瘍の代謝プロファイル解析2017

    • Author(s)
      高橋徹行、常山幸一
    • Organizer
      第11回TSOD(肥満・糖尿病)マウス研究会情報交換会
    • Place of Presentation
      つくば研究支援センター
    • Year and Date
      2017-01-28
    • Related Report
      2016 Research-status Report
  • [Presentation] Hyperinsulinemia, not hyperglycemia accelerates the progression of hepatocellular carcinoma in neonatal streptozotocin induced mouse model.2017

    • Author(s)
      Koichi Tsuneyama, Ryosuke Bessho, Masahiro Miki, Hayato Baba, Tetsuyuki Takahashi, Hirohisa Ogawa, Hisanori Uehara
    • Organizer
      The 68th Annual Meeting of American Association for the Study of Liver Disease
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] プロスタグランジンE2受容体シグナリング阻害は膵臓がんにおけるIGF-1受容体シグナリングを介した増殖刺激を消失させる2016

    • Author(s)
      高橋徹行、上原久典、常山幸一、土方貴雄
    • Organizer
      日本薬学会第136年会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-03-27
    • Related Report
      2015 Research-status Report

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Published: 2015-04-16   Modified: 2020-03-30  

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