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Development of Novel Therapies Targeting ATX/LPA Receptor Signaling in Cholangiocarcinoma

Research Project

Project/Area Number 21K20844
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0901:Oncology and related fields
Research InstitutionNagoya City University

Principal Investigator

Kondo Hiromu  名古屋市立大学, 医薬学総合研究院(医学), 准教授 (60750594)

Project Period (FY) 2021-08-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords胆道癌 / オートタキシン
Outline of Research at the Start

本研究では、胆道癌における「癌進展」と「繰り返す胆管炎」という両方の問題点に対応できる全く新しい治療戦略として、リゾホスファチジン酸(LPA)受容体およびLPAの生合成を担うオートタキシン(ATX)によるシグナル伝達に注目した。胆道癌細胞株とマウスでの基礎実験に臨床検体を用いた検証を加え、胆道癌進展におけるLPA受容体シグナルの重要性とATXをターゲットとした制御の有用性を解明する。さらに胆汁中・血清中ATXの再発性胆管炎のバイオマーカーとしての意義も検証し、胆道癌治療の新たなターゲットとして臨床応用を目指す第一歩としたい。

Outline of Final Research Achievements

This study aims to elucidate the potential of LPA receptor signaling as a novel therapeutic target in cholangiocarcinoma. Initially, we clarified the significance of lysophosphatidic acid (LPA)-LPA receptor signaling in the progression of cholangiocarcinoma. Subsequently, we confirmed the high expression of autotaxin (ATX), known as the LPA-producing enzyme, in clinical specimens and experimental cell lines of cholangiocarcinoma. We demonstrated the cancer-suppressing effects through ATX regulation (via transduction and inhibitors). As an extension of this study, we will also conduct experiments using pancreatic neuroendocrine tumor cells (pNEN), elucidating the significance of ATX expression regulation in pNEN.

Academic Significance and Societal Importance of the Research Achievements

本研究は、胆道癌における新規治療ターゲットとしてLPA受容体シグナルの可能性を解明することを目的とした。胆道癌進展におけるLPA-LPA受容体シグナルの重要性を明らかにし、ATXの制御による癌抑制効果を証明することで、胆道癌治療法の新規開発と患者の予後改善に大きな影響を与える可能性があると考えられた。ATX阻害剤は炎症性疾患を中心とする他の疾患ですでに臨床試験が組まれている薬剤が複数あるため、胆道癌治療薬へのDrug repositioningが可能である。本研究から派生したpNENへの効果も今後期待され、この治療戦略は胆膵領域に広く貢献することが期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (4 results)

All 2024 2023 2022

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results)

  • [Journal Article] Prognostic Nutritional Index after Introduction of Atezolizumab with Bevacizumab Predicts Prognosis in Advanced Hepatocellular Carcinoma: A Multicenter Study2024

    • Author(s)
      Suzuki Takanori、Kimura Yoshihide、et al.
    • Journal Title

      Oncology

      Volume: Online ahead of print Issue: 8 Pages: 1-12

    • DOI

      10.1159/000536367

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dual role of autotaxin as novel biomarker and therapeutic target in pancreatic neuroendocrine neoplasms2023

    • Author(s)
      Toyohara Tadashi、Yoshida Michihiro
    • Journal Title

      Cancer Science

      Volume: 114 Issue: 12 Pages: 4571-4582

    • DOI

      10.1111/cas.15980

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The neutrophil‐to‐lymphocyte ratio at the start of the second course during atezolizumab plus bevacizumab therapy predicts therapeutic efficacy in patients with advanced hepatocellular carcinoma: A multicenter analysis2023

    • Author(s)
      Matoya Sho、、Kimura Yoshihide、et al.
    • Journal Title

      Hepatology Research

      Volume: 53 Issue: 6 Pages: 511-521

    • DOI

      10.1111/hepr.13886

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Clinical impact of bile‐derived exosomal microRNAs as novel diagnostic and prognostic biomarkers for biliary tract cancers2022

    • Author(s)
      Yoshida Michihiro、Yukawa Hiroshi、Hayashi Kazuki、et al.
    • Journal Title

      Cancer Science

      Volume: 114 Issue: 1 Pages: 295-305

    • DOI

      10.1111/cas.15597

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access

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Published: 2021-10-22   Modified: 2025-01-30  

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