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AGEs-RAGE signaling-mediated effects on pancreatic stellate cells by pancreatic ductal carcinoma

Research Project

Project/Area Number 20K17636
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionHirosaki University

Principal Investigator

Yutaro Hara  弘前大学, 医学部附属病院, 医員 (60836732)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords膵星細胞 / 浸潤性膵管癌 / 2型糖尿病 / 癌関連線維芽細胞 / 膵導管癌 / 糖尿病
Outline of Research at the Start

膵導管癌 (PDC)は予後不良な疾患であり、その機序に間質の線維化がある。2型糖尿病 (T2DM) はPDCの予後不良因子であるが、機序は不明である。高血糖に起因する終末糖化産物、及びその受容体(RAGE)を介したシグナルは、T2DM合併症の発症機序の1つであり、PDCの増殖、進展に関与することが知られている。PDCと膵星細胞(PSC)がクロストークを引き起こし、PDCの悪性度が増強するが、RAGEシグナルを介した経路は明らかになっていない。本研究は、T2DMにおけるRAGEを介したPDCおよびPSCへの影響を解明し、PDCに対するRAGEシグナルを標的とした新規治療法の確立を目的とする。

Outline of Final Research Achievements

Type 2 diabetes (T2D) is known to be a risk factor for invasive pancreatic ductal adenocarcinoma (PDAC). The PSC populations were broadly classified into the mesothelial cell population and the pancreatic fibroblast (Paf) population. Furthermore, the Paf population was classified as inflammatory PSC and myofibroblastic PSC (myPSC). Notably, a small population of cells with gene expression similar to Paf was identified. This cell population strongly expresses cxcl13. Gene ontology analysis revealed strong enrichment of upregulated angiogenesis. Furthermore, the cxcl13 postitive PSC isolated from db almost completely disappeared. cxcl13 postitive PSC and myPSC populations were sorted by flow cytometry and transplanted subcutaneously into BALB/c-nu/nu mice with the human pancreatic cancer cell line. Tumor size increased in myPSC while PSSC significantly restricted tumor size .

Academic Significance and Societal Importance of the Research Achievements

浸潤性膵管癌は、現在でも5 年生存率が10%に満たない最も予後の悪い固形癌の一つである。 さらに、近年世界的に増加しており、2030 年には癌死の第二位になると見込まれている疾患である。しかし、画期的な治療方法が生み出されていない。癌関連線維芽細胞の研究は盛んに行われているが、膵星細胞の集団コントロールに着目している研究はない。癌関連線維芽細胞は癌細胞ではないため、癌関連線維芽細胞の初期化を計画すると起源細胞である膵星細胞のコントロールに着地する。また、間質細胞の制御による膵癌治療アプローチは新たな治療のパラダイムシフトになる可能性を秘めている。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (3 results)

All 2023 2022

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

  • [Journal Article] Dual epigenetic changes in diabetes mellitus‐associated pancreatic ductal adenocarcinoma correlate with downregulation of E‐cadherin and worsened prognosis2023

    • Author(s)
      Hara Yutaro、Mizukami Hiroki、Yamazaki Keisuke、Yamada Takahiro、Igawa Akiko、Takeuchi Yuki、Sasaki Takanori、Kushibiki Hanae、Murakami Kotaro、Kudoh Kazuhiro、Ishido Keinosuke、Hakamada Kenichi
    • Journal Title

      The Journal of Pathology: Clinical Research

      Volume: 9 Issue: 5 Pages: 354-366

    • DOI

      10.1002/cjp2.326

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Diabetes mellitus impacts on expression of DNA mismatch repair protein PMS2 and tumor microenvironment in pancreatic ductal adenocarcinoma2023

    • Author(s)
      Pan X, Mizukami H, Hara Y, Yamada T, Yamazaki K, Kudoh K, Takeuchi Y, Sasaki T, Kushibiki H, Igawa A, Hakamada K.
    • Journal Title

      J Diabetes Investig

      Volume: 14 Issue: 1 Pages: 132-144

    • DOI

      10.1111/jdi.13929

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] SINGLE-CELL RNA SEQUENCING REVEALS HETEROGENEITY AND A RARE POPULATION OF PANCREATIC STELLATE CELLS: TYPE 2 DIABETES INDUCES PANCREATIC STELLATE CELLS TO BECOME CANCER-ASSOCIATED FIBROBLAST-LIKE CAUSING PANCREATIC STELLATE STEM CELL LOSS2022

    • Author(s)
      Yutaro Hara, Hiroki Mizukami, Takahiro Yamada, Keisuke Yamazaki, Norihisa Kimura, Keinosuke Ishido, Kenichi Hakamada
    • Organizer
      DDW2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2025-01-30  

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