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2022 Fiscal Year Final Research Report

Carcinogenesis of gastric adenocarcinoma of fundic-gland type

Research Project

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Project/Area Number 20K08393
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53010:Gastroenterology-related
Research InstitutionJuntendo University

Principal Investigator

Ueyama Hiroya  順天堂大学, 医学部, 准教授 (60621935)

Co-Investigator(Kenkyū-buntansha) 永原 章仁  順天堂大学, 医学部, 教授 (00266040)
八尾 隆史  順天堂大学, 医学部, 教授 (20243933)
林 大久生  順天堂大学, 医学部, 准教授 (70569128)
齋藤 剛  順天堂大学, 医学部, 准教授 (80439736)
赤澤 陽一  順天堂大学, 医学部, 助教 (80822006)
Project Period (FY) 2020-04-01 – 2023-03-31
Keywords胃癌 / 胃底腺型胃癌 / 胃底腺型腺癌 / 胃底腺粘膜型腺癌 / ピロリ未感染胃癌
Outline of Final Research Achievements

The aim of this study was to identify the main genes that play a key role in the mechanism of carcinogenesis and progression in patients with gastric epithelial neoplasm of fundic-gland mucosa lineage (GEN-FGML). We developed a new histological classification of GEN-FGML and performed clinicopathological analysis and comprehensive gene analysis using next-generation sequence based on this classification. GEN-FGML was classified into three types, OGA, GA-FG, and GA-FGM. OGA and GA-FG demonstrated low-grade epithelial neoplasm, and GA-FGM should be categorized as an aggressive variant of GEN-FGML that demonstrated high-grade epithelial neoplasm. The frequent presence of GNAS mutation was a characteristic genetic feature of GEN-FGML in mutation analysis using next-generation sequencing (J Gastroenterol. 2021;56:814-828).

Free Research Field

胃癌

Academic Significance and Societal Importance of the Research Achievements

本研究により胃底腺型胃癌の新たな組織学的分類が確立し、各タイプの臨床病理学的特徴と特定の遺伝子異常も見出され、胃底腺型胃癌患者の発癌・進展機序の全容解明に必要な基盤を確立することができた。今後は多領域シークエンスによる微小組織の包括的ゲノムプロファイリングを施行することが可能となり、将来的には機能解析と発現検証を経て臨床応用が期待されるリキッドバイオプシーを利用した「がん進化を標的とした治療戦略」の基盤となりうる。

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Published: 2024-01-30  

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