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Analysis of the mechanism in remodeling of pancreatic tumor microenvironment by epigenetic modification

Research Project

Project/Area Number 21K07886
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionThe University of Tokyo

Principal Investigator

Nakai Yousuke  東京大学, 医学部附属病院, 准教授 (80466755)

Co-Investigator(Kenkyū-buntansha) 立石 敬介  東京大学, 医学部附属病院, 届出研究員 (20396948)
高橋 良太  東京大学, 医学部附属病院, 助教 (80647660)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords膵臓癌 / エピジェネティクス / オルガノイド / 膵癌 / エピジェネテイクス
Outline of Research at the Start

膵癌腫瘍間質細胞の側においてもエピゲノム変化が誘導されている可能性を想起した。
研究の準備状況として、用いるエピゲノム阻害化合物の候補として、3ラインのPDOで膵癌に対する抗増殖効果が認められた4種類の化合物を準備済みであり、今回の研究に活用することができる。ヒト膵癌を解析する手法としてゼノグラフトシステムを20ライン以上樹立している。このモデルを膵癌マウスモデルの知見と比較統合することで膵癌組織全体における共通したエピゲノムの意義を探索・検証可能と考える。またヒトCAFのin vitro培養系も樹立済みであり、そのサブタイプ変化の解析に有効であると期待される。

Outline of Final Research Achievements

In pancreatic cancer, it is reported that in addition to genetic mutations, epigenetics is playing an important role. In this study, we conducted a drug screening test using patient-derived organoid culture system to investigate in the possibility that cells in tumor microenvironment surrounding tumor cells, such as immune cells and fibroblasts are affected by regulating epigenetic modification of cancer cells, thereby leading to a novel therapy of pancreatic cancer. As a result, we found four chemicals targeting epigenetic modification which show anti-tumor effects on pancreatic cancer.

Academic Significance and Societal Importance of the Research Achievements

膵臓癌におけるエピジェネティクスの重要性が示唆されているが、腫瘍進展における詳細な役割や治療標的としての可能性はまだ明らかになっていない。本研究で同定された化合物は患者由来の膵臓癌オルガノイドに対して広範な抗腫瘍効果を示しており、エピジェネティクスが膵臓癌の治療標的となる可能性が示唆された。今後さらに検討を進め、マウスへの移植実験等により免疫細胞や線維芽細胞といった腫瘍微小環境への影響やその意義について明らかにすることを目指す。

Report

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

    (5 results)

All 2023 2022

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results)

  • [Journal Article] Tff2 defines transit-amplifying pancreatic acinar progenitors that lack regenerative potential and are protective against Kras-driven carcinogenesis2023

    • Author(s)
      Jiang Zhengyu、Wu Feijing、Laise Pasquale、Takayuki Tanaka、Na Fu、Kim Woosook、Kobayashi Hiroki、Chang Wenju、Takahashi Ryota、Valenti Giovanni、Sunagawa Masaki、White Ruth A.、Macchini Marina、Renz Bernhard W.、Middelhoff Moritz、Hayakawa Yoku、Dubeykovskaya Zinaida A.、Tan Xiangtian、Chu Timothy H.、他
    • Journal Title

      Cell Stem Cell

      Volume: 30 Issue: 8 Pages: 1091-1109.e7

    • DOI

      10.1016/j.stem.2023.07.002

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Clinical Outcomes of Intraductal Papillary Mucinous Neoplasms With Dilatation of the Main Pancreatic Duct2023

    • Author(s)
      Hamada Tsuyoshi、Oyama Hiroki、Nakai Yousuke、Tateishi Keisuke、Ushiku Tetsuo、Hasegawa Kiyoshi、Fujishiro Mitsuhiro
    • Journal Title

      Clinical Gastroenterology and Hepatology

      Volume: - Issue: 7 Pages: 792-1801

    • DOI

      10.1016/j.cgh.2023.01.032

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] HNF1B‐driven three‐dimensional chromatin structure for molecular classification in pancreatic cancers2022

    • Author(s)
      Kato Hiroyuki、Tateishi Keisuke、Iwadate Dosuke、Yamamoto Keisuke、Fujiwara Hiroaki、Nakatsuka Takuma、Kudo Yotaro、Hayakawa Yoku、Ijichi Hideaki、Otsuka Motoyuki、Kishikawa Takahiro、Takahashi Ryota、Miyabayashi Koji、Nakai Yousuke、Hirata Yoshihiro、Toyoda Atsushi、Morishita Shinichi、Fujishiro Mitsuhiro
    • Journal Title

      Cancer Science

      Volume: 114 Issue: 4 Pages: 1672-1685

    • DOI

      10.1111/cas.15690

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] KRAS variant allele frequency, but not mutation positivity, associates with survival of patients with pancreatic cancer2022

    • Author(s)
      Suzuki T, Masugi Y, Inoue Y, Hamada T, Tanaka M, Takamatsu M, Arita J, Kato T, Kawaguchi Y, Kunita A, Nakai Y, Nakano Y, Ono Y, Sasahira N, Takeda T, Tateishi K, Uemura S, Koike K, Ushiku T, Takeuchi K, Sakamoto M, Hasegawa K, Kitago M, Takahashi Y, Fujishiro M.
    • Journal Title

      Cancer Science

      Volume: - Issue: 9 Pages: 3097-3109

    • DOI

      10.1111/cas.15398

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] MNX1-HNF1B Axis Is Indispensable for Intraductal Papillary Mucinous Neoplasm Lineages2022

    • Author(s)
      Kato H, Tateishi K, Fujiwara H, Nakatsuka T, Yamamoto K, Kudo Y, Hayakawa Y, Nakagawa H, Tanaka Y, Ijichi H, Otsuka M, Iwadate D, Oyama H, Kanai S, Noguchi K, Suzuki T, Sato T, Hakuta R, Ishigaki K, Saito K, Saito T, Takahara N, Kishikawa T, Hamada T, Takahashi R, Miyabayashi K, et al.
    • Journal Title

      Gastroenterology

      Volume: 162 Issue: 4 Pages: 1272-1287

    • DOI

      10.1053/j.gastro.2021.12.254

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access

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Published: 2021-04-28   Modified: 2025-01-30  

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