• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

The role of DNA methylation on the maintenance of gastric mucosa and gastric carcinogenesis.

Research Project

Project/Area Number 21K15921
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionKyoto University

Principal Investigator

Shimizu Takahiro  京都大学, 医学研究科, 助教 (70812684)

Project Period (FY) 2021-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2022: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords腸上皮化生 / ヘリコバクター・ピロリ菌 / DNAメチル化異常 / 胃癌 / DNAメチル化
Outline of Research at the Start

Helicobacter pylori感染による慢性胃炎からの発癌において、ゲノム異常の蓄積とともに、DNAメチル化異常の蓄積も重要である。また、DNAメチル化調節機構は恒常性維持にも関わる。本研究では、マウスモデルを用いて胃粘膜の恒常性維持におけるDNAメチル化制御の役割について検討する。さらに、DNAメチル化制御の破綻が胃発癌にどのように関わるのかをマウスモデル及びヒト臨床検体を用いて明らかにする。

Outline of Final Research Achievements

Gastric cancer develops in chronic gastritis mucosa related with Helicobacter pylori infection. In this study, we performed DNA methylation analysis in pure gastric glands. Comprehensive DNA methylation analysis revealed that gastric glands with intestinal metaplasia had more aberrant DNA methylation compared with those without intestinal metaplasia. The investigation of methylated genes specifically shown in intestinal metaplasia and non-intestinal metaplasia suggested that the accumulation of aberrant DNA methylation in intestinal metaplasia could be involved in the formation of field cancerization in the stomach.

Academic Significance and Societal Importance of the Research Achievements

胃癌の多くは、ヘリコバクター・ピロリ菌の感染による慢性胃炎粘膜より発生する。以前から、慢性胃炎粘膜にはDNAメチル化異常が多く存在していることが報告されていたが、発癌との直接的関与については不明な点が多かった。本研究では、慢性胃炎粘膜においてDNAメチル化異常が多く含まれている腺管群を明らかにし、発癌との関与を解析した。胃発癌メカニズムの解明だけでなく、胃癌のリスク腺管を考える上でも重要な科学的根拠と考える。

Report

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

    (2 results)

All 2023 2022

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

  • [Journal Article] On the origin of gastric tumours: analysis of a case with intramucosal gastric carcinoma and oxyntic gland adenoma2023

    • Author(s)
      Ken Kumagai, Takahiro Shimizu, Mitsuhiro Nikaido, Tomonori Hirano, Nobuyuki Kakiuchi, Yasuhide Takeuchi, Sachiko Minamiguchi, Takaki Sakurai, Mari Teramura, Takahiro Utsumi, Yukiko Hiramatsu, Yuki Nakanishi, Atsushi Takai, Shin'ichi Miyamoto, Seishi Ogawa, Hiroshi Seno
    • Journal Title

      Journal of Pathology

      Volume: 259 Issue: 4 Pages: 362-368

    • DOI

      10.1002/path.6050

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] Investigation of field cancerization in the stomach by genetic analysis of gastric glands.2022

    • Author(s)
      清水孝洋、熊谷健、高井淳、竹田治彦、二階堂光洋、寺村茉利、伊藤卓彦、妹尾浩
    • Organizer
      第33回日本消化器癌発生学会
    • Related Report
      2022 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi