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Molecular analysis in the malignant progression of IPMN

Research Project

Project/Area Number 19K08387
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

Tada Minoru  東京大学, 医学部附属病院, 届出研究員 (80302719)

Co-Investigator(Kenkyū-buntansha) 立石 敬介  東京大学, 医学部附属病院, 講師 (20396948)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords膵癌 / 膵のう胞
Outline of Research at the Start

膵嚢胞性疾患であると同時に膵前癌病変としての膵管内乳頭粘液性腫瘍(IPMN)には二種類の発癌経路が存在する。それぞれのIPMN由来浸潤性膵発癌とIPMN随伴性膵発癌においては、いわゆる通常型膵癌とはその背景因子や臨床的予後および遺伝子変異などにおいて違いが存在する。これまで我々はIPMN発癌の臨床疫学のみならず遺伝子変異やシグナル伝達活性化の違いなどについて報告してきたが、本研究では前向きの経過観察中に発癌したIPMN症例におけるIPMN非癌部上皮と癌部組織を用いて、分子学的な解析を行う。

Outline of Final Research Achievements

This research analyzed epigenetic profiles among the different grades of IPMN related tissues, including low grade, high grade, and invasive cancers. The levels of 5-mC and 5-hmC were decreased through the malignant progression of IPMN related lesions, which indicated a pivotal role of DNA methylation in the IPMN tumorigenesis. In addition, the expression of epigenome related genes including NMT1, DNMT3A DNMT3B, TET1, TET2, TET3 were analyzed among the groups. This research proposed a possibility that the alteration of epigenome is a significant mechanism in the progression of IPMN carcinogenesis.

Academic Significance and Societal Importance of the Research Achievements

膵嚢胞性腫瘍であるIPMNが年率0.6%と一般の20倍と高い発癌リスクを有する膵癌高危険群であることを報告した。IPMNに関連する膵発癌様式にはIPMN上皮が局所で悪性転化し浸潤癌化するIPMN由来浸潤癌と、IPMNとは別の場所の膵内に通常型膵癌と同様の浸潤癌を形成するIPMN併存膵癌がある。IPMNが通常型膵癌とは異なる分子学的背景を持つかどうかはいまだ十分明らかではない。本研究では、IPMNに関連する2通りの膵発癌様式にとって重要であり、かつ各々を層別化しうるエピゲノム制御プロファイルを検討した点で意義がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (3 results)

All 2021 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (1 results)

  • [Journal Article] ABO Blood Group and Risk of Pancreatic Carcinogenesis in Intraductal Papillary Mucinous Neoplasms2021

    • Author(s)
      Hamada T, Oyama H, Nakai Y, Tada M, Koh H, Tateishi K, Arita J, Hakuta R, Ijichi H, Ishigaki K, Kawaguchi Y, Kogure H, Mizuno S, Morikawa T, Saito K, Saito T, Sato T, Takagi K, Takahara N, Takahashi R, Tanaka A, Tanaka M, Ushiku T, Hasegawa K, Koike K.
    • Journal Title

      Cancer Epidemiology, Biomarkers and Prevention

      Volume: 30 Issue: 5 Pages: 1020-1028

    • DOI

      10.1158/1055-9965.epi-20-1581

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Long-term Risk of Malignancy in Branch-Duct Intraductal Papillary Mucinous Neoplasms.2020

    • Author(s)
      Oyama H, Tada M, Takagi K, Tateishi K, Hamada T, Nakai Y, Hakuta R, Ijichi H, Ishigaki K, Kanai S, Kogure H, Mizuno S, Saito K, Saito T, Sato T, Suzuki T, Takahara N, Morishita Y, Arita J, Hasegawa K, Tanaka M, Fukayama M, Koike K.
    • Journal Title

      Gastroenterology.

      Volume: 158 Issue: 1 Pages: 226-237

    • DOI

      10.1053/j.gastro.2019.08.032

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 血漿sVCAM-1とANP上昇は膵癌関連血栓症/血栓塞栓症の危険予測因子である2020

    • Author(s)
      佐野誠,高橋良太,伊地知秀明,宮林弘至,石垣和祥,水野卓,中井陽介,立石敬介,多田稔,小池和彦
    • Organizer
      第51回日本膵臓学会大会
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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