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Exploring a new regulation system of pancreatic cancer microenvironment using KPC confetti mice

Research Project

Project/Area Number 20K09057
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionKyushu University

Principal Investigator

YASUI Takaharu  九州大学, 医学研究院, 共同研究員 (60611283)

Co-Investigator(Kenkyū-buntansha) 木庭 遼  九州大学, 医学研究院, 共同研究員 (10866776)
藤田 逸人  九州大学, 医学研究院, 共同研究員 (40611281)
坂井 寛  九州大学, 医学研究院, 共同研究員 (80611665)
冨永 洋平  宮崎大学, 医学部, 講師 (90304823)
大内田 研宙  九州大学, 医学研究院, 准教授 (20452708)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords膵癌自然発生マウス / 4色発現マウス / 膵癌 / 微小環境 / 微小転移 / 癌微小環境
Outline of Research at the Start

膵癌の遠隔転移の成立には、癌細胞の原発巣からの離脱、血管内への侵入・生存、標的臓器到達後の生着・増殖といった複数の段階を経るとされるが、その機序は十分には解明されていない。本研究では、原発巣の膵癌細胞にrandomにmulticolorに発色する蛍光蛋白質遺伝子が導入されたマウスを用いて、腫瘍の極早期の微小転移から肉眼的転移に至る各段階で構成される細胞集団を追跡しその違いを評価する。また原発・転移巣それぞれにおいて、臓器特異的な転移関連因子や高転移能を有する細胞集団の探索を行う。これら微小転移巣の解析に基づき、膵癌の転移機序を周囲微小環境の役割も含めて解析し明らかにする。

Outline of Final Research Achievements

In pancreatic cancer, liver metastasis is cause of poor prognosis. Liver metastases of pancreatic cancer are highly malignant and there is no effective treatment for them. We will clarify the mechanism of metastasis at very early stage using KPC Confetti mice, in which pancreatic cancer cells randomly fluoresce. We identified multicolor cancer cells in primary tumors, but not in metastases. Therefore, we focused on activated hepatic stellate cells, which are involved in the formation of hepatic metastasis, to elucidate the metastatic mechanism. We screened for candidate drugs that induce pancreatic stellate cells inactivation, which we had identified in a previous study. Several drugs showed decreased expression of αSMA, the accumulation of lipid droplets in the hepatic stellate cells, and inhibited the activation of hepatic stellate cells. It was suggested that inactivation of hepatic stellate cells inhibits hepatic metastasis formation.

Academic Significance and Societal Importance of the Research Achievements

微小転移モデルには細胞株の同所移植モデルが用いられてきたが、ヒト膵癌と相同性が低い問題があった。KPC Confettiマウスを用いることでヒト膵癌と病理学的類似性が高い腫瘍の極早期の微小転移を単細胞レベルで解析でき、微小転移に関わる細胞集団が同定できれば、癌細胞集団の特徴的や間質・免疫細胞の役割など今まで解明されていない分野への貢献も期待される。本研究により膵癌の微小転移のメカニズムが解明され新たな治療法の開発に至れば、難治性である膵癌の予後改善のみならず、他癌腫の転移メカニズム解析にも応用でき、学術的・社会的にも広範な波及効果が期待される為、癌研究分野において非常に意義が高いと考えられる。

Report

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

    (8 results)

All 2023 2022 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Involvement of angiogenesis in cancer-associated acinar-to-ductal metaplasia lesion of pancreatic cancer invasive front2023

    • Author(s)
      Fei Shuang、Ohuchida Kenoki、Kibe Shin、Yan Zilong、Iwamoto Chika、Shinkawa Tomohiko、Zhang Bo、Kawata Jun、Abe Toshiya、Ideno Noboru、Ikenaga Naoki、Nakata Kohei、Oda Yoshinao、Nakamura Masafumi
    • Journal Title

      Journal of Cancer Research and Clinical Oncology

      Volume: 印刷中 Issue: 9 Pages: 5885-5899

    • DOI

      10.1007/s00432-022-04554-5

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Subtypes in pancreatic ductal adenocarcinoma based on niche factor dependency show distinct drug treatment responses2022

    • Author(s)
      Shinkawa Tomohiko、Ohuchida Kenoki、Mochida Yuki、Sakihama Kukiko、Iwamoto Chika、Abe Toshiya、Ideno Noboru、Mizuuchi Yusuke、Shindo Koji、Ikenaga Naoki、Moriyama Taiki、Nakata Kohei、Oda Yoshinao、Nakamura Masafumi
    • Journal Title

      Journal of Experimental Clinical Cancer Research

      Volume: 41 Issue: 1 Pages: 89-89

    • DOI

      10.1186/s13046-022-02301-9

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] シングルセル解析を用いた膵臓癌の間質相互作用による化学療法抵抗性機序の検討2022

    • Author(s)
      持田郁己、大内田研宙、寅田信博、堤親範、中村祥一、久野恭子、奥田翔、新川智彦、仲田興平、中村雅史
    • Organizer
      第77回日本消化器外科学会総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 異なる薬物治療反応性を示す微小環境因子依存性に基づいた新たな膵癌サブタイプ分類2022

    • Author(s)
      新川智彦、大内田研宙、持田郁己、井手野昇、水内祐介、進藤幸治、池永直樹、森山大樹、仲田興平、中村雅史
    • Organizer
      第122回日本外科学会定期学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 術前化学療法時代の膵がん術後早期再発因子の検討2022

    • Author(s)
      池永直樹、仲田興平、阿部俊也、井手野昇、水内祐介、大内田研宙、中村雅史
    • Organizer
      第122回日本外科学会定期学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Efficient Targeted Therapy for Pancreatic Cancer Using Nanosystem and Focusing on the Suppression of Pancreatic Stellate Cell Activation2020

    • Author(s)
      Matsumoto S, Nakata K, Ikenaga N, Date S, Guan W, Sagara A, Ohuchida K, Ohtsuka T, Nakamura M
    • Organizer
      14th World Congress of International Hepeto-Pancreato-Biliary Association
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Human macrophages-derived CAF-like cells lead the invasion of pancreatic cancer2020

    • Author(s)
      Iwamoto C, Ohuchida K, Shinkawa T, Otsubo Y, Shindo K, Moriyama T, Nakata K, Ohtsuka T, Nakamura M
    • Organizer
      14th World Congress of International Hepeto-Pancreato-Biliary Association
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Subtype classification of pancreatic ductal adenocarcinoma based on microenvironmental niche factors dependency and chemotherapy resistance2020

    • Author(s)
      Shinkawa T, Ohuchida K, Iwamoto C, Shindo K, Nakata K, Ohtsuka T, Nakamura M
    • Organizer
      14th World Congress of International Hepeto-Pancreato-Biliary Association
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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