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Elucidation of the mechanism of pancreatic cancer metastasis using single cell analysis technology and innovative mouse models

Research Project

Project/Area Number 18K19546
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 53:Organ-based internal medicine and related fields
Research InstitutionOsaka University

Principal Investigator

Takehara Tetsuo  大阪大学, 医学系研究科, 教授 (70335355)

Co-Investigator(Kenkyū-buntansha) 小玉 尚宏  大阪大学, 医学系研究科, 助教 (10623275)
Project Period (FY) 2018-06-29 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords膵癌 / 肝転移 / 免疫逃避 / HLA / シングルセル解析 / マウスモデル / 転移 / エレクトロポレーション / レンチウイルス / 遺伝子導入 / 単一細胞解析 / CIRPSR/Cas / マウス
Outline of Final Research Achievements

The purpose of this study was to elucidate the molecular basis of pancreatic cancer metastasis by analyzing clinical samples of human pancreatic cancer using comprehensive gene expression analysis technology in single cells and basic research using an innovative mouse model of pancreatic cancer based on genome editing technology. We have succeeded in establishing a mouse model that develops pancreatic cancer by inducing activation and inactivation of oncogenes such as Kras and Tp53 in a pancreas-specific and time-dependent manner through the fusion of gene-edited mice and electroporation technology. We also conducted single-cell gene expression analysis using primary tissues and liver metastasis tissues of pancreatic cancer patients, and found that down-regulation of HLA molecules in cancer cells at metastasis sites may contribute to escape from immune surveillance mechanisms and promote metastasis.

Academic Significance and Societal Importance of the Research Achievements

膵臓がんは非常に難治であり、原発巣が非常に小さな腫瘍の段階から高率に肝臓などの多臓器へ転移し、進展する。転移を伴う膵癌の予後は極めて不良であり、その予後改善には転移の分子基盤や転移抑制を目指した治療開発が極めて重要である。本研究により膵癌細胞が免疫機構からの逃避を促進することで転移が促されるといいう新たな分子基盤を見出しており、転移抑制を目指した治療開発において極めて重要な結果であると考えられる。また、今後見出した分子の治療標的としての有用性を生体モデルで検討するための基盤となるマウスモデルの樹立が出来た点も今後の研究発展や臨床への展開に重要な意義があると考えられる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (9 results)

All 2020 2019

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

  • [Journal Article] Risk Factors for Pancreatic Cancer and the Necessity of Long-Term Surveillance in Patients With Pancreatic Cystic Lesions2020

    • Author(s)
      Yoshioka Teppei、Shigekawa Minoru、Ikezawa Kenji、Tamura Takeshi、Sato Katsuhiko、Urabe Makiko、Sueyoshi Hironari、Yamai Takuo、Suda Takahiro、Sakamori Ryotaro、Tatsumi Tomohide、Takehara Tetsuo
    • Journal Title

      Pancreas

      Volume: 49 Issue: 4 Pages: 552-560

    • DOI

      10.1097/mpa.0000000000001521

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hyperglycemia enhances pancreatic cancer progression accompanied by elevations in phosphorylated STAT3 and MYC levels2020

    • Author(s)
      Sato Katsuhiko、Hikita Hayato、Myojin Yuta、Fukumoto Kenji、Murai Kazuhiro、Sakane Sadatsugu、Tamura Takeshi、Yamai Takuo、Nozaki Yasutoshi、Yoshioka Teppei、Kodama Takahiro、Shigekawa Minoru、Sakamori Ryotaro、Tatsumi Tomohide、Takehara Tetsuo
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 7 Pages: e0235573-e0235573

    • DOI

      10.1371/journal.pone.0235573

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Endoscopic biliary stenting as the risk factor for cholangitis after endoscopic ultrasound in patients with biliary strictures2020

    • Author(s)
      Ikezawa Kenji、Shigekawa Minoru、Yamai Takuo、Suda Takahiro、Kegasawa Tadashi、Yoshioka Teppei、Sakamori Ryotaro、Tatsumi Tomohide、Takehara Tetsuo
    • Journal Title

      Journal of Gastroenterology and Hepatology

      Volume: in press Issue: 5 Pages: 1263-1266

    • DOI

      10.1111/jgh.15264

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 炎症制御分子Regnase-1を介した膵癌発症機構の解明2020

    • Author(s)
      岡部純弥、小玉尚宏、竹原徹郎
    • Organizer
      JDDW2020
    • Related Report
      2020 Annual Research Report
  • [Presentation] 膵多血性腫瘍に対するEUS-FNAの工夫2020

    • Author(s)
      清田良介、重川 稔、吉岡鉄平、竹原徹郎
    • Organizer
      第105回日本内視鏡学会近畿支部例会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 長期経過観察例からみる自己免疫性膵炎の課題2020

    • Author(s)
      重川 稔、吉岡鉄平、竹原徹郎
    • Organizer
      第51回日本膵臓学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 慢性膵炎におけるHippo/PI3K経路の調節不全と治療標的としての可能性2020

    • Author(s)
      田村猛、小玉尚宏、吉岡鉄平、重川稔、疋田隼人、阪森亮太郎、秋田裕史、江口英利、巽智秀、竹原徹郎
    • Organizer
      第51回日本膵臓学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] がん特異的アミノ酸トランスポータを標的とした膵癌治療の可能性2019

    • Author(s)
      野崎 泰俊、疋田 隼人、竹原 徹郎
    • Organizer
      第105回日本消化器病学会総会
    • Related Report
      2019 Research-status Report
  • [Presentation] THE RELATIONSHIP BETWEEN OBSERVATION INTERVAL AND PROGNOSIS IN PANCREATIC CANCER ASSOCIATED WITH PANCREATIC CYSTIC LESIONS2019

    • Author(s)
      Teppei Yoshioka, Minoru Shigekawa, Yu Sato, Junya Okabe, Takeshi Tamura, Katsuhiko Sato, Makiko Urabe, Takuo Yamai, Takahiro Suda, Ryoko Yamada, Takahiro Kodama, Hayato Hikita, Ryotaro Sakamori, Tomohide Tatsumi and Tetsuo Takehara
    • Organizer
      Digestive Disease Week (DDW2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2018-07-25   Modified: 2022-01-27  

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