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

Exploration of the multi-step hepatocarcinogenesis based on the multi-omics strategy.

Research Project

Project/Area Number 22K15964
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

Takeda Haruhiko  京都大学, 医学研究科, 特定病院助教 (40647525)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsゲノム解析 / 肝発癌 / オミックス解析 / 全ゲノムシーケンス / 全ゲノム解析 / 次世代シーケンサー / 前癌病変 / マルチオミックス解析
Outline of Research at the Start

肝炎・肝硬変からの多段階肝発癌過程において、前癌病変や早期癌の遺伝学的特徴は十分に解析されていない。早期の段階でのキーとなる遺伝子異常が明らかになれば、癌の進行を抑制して、特に予後不良な進行肝癌の撲滅につながるものと期待できる。本研究では、まず臨床検体の多領域サンプリングに基づいた精査な全ゲノムシーケンスを行い、発癌の初期・進行期に獲得される遺伝子異常を特定する。さらに、遺伝子発現やDNAメチル化解析を合わせて、前癌病変の遺伝学的な特徴を包括的に解析する。また、細胞実験を通じて、臨床検体の系統樹解析から発癌の各段階で必要と考えられたキードライバー遺伝子変異の生物学的な意味合いを検証する。

Outline of Final Research Achievements

Liver cancer is one of the most lethal malignancies, and genome-based personalized therapy is highly expected. In this study, we aimed to examine the candidates of the genetic alterations characteristic to each step of multistage hepatocarcinogenesis, especially in the early step of cancer development. We conducted multiregional sampling from the premalignant small liver nodules surgically resected along with the classical hepatocellular carcinomas and examined their characteristics through the multi-omics strategy especially with the whole-genome sequencing. We detected various genetic alterations, not only single nucleotide variants but also chromosomal translocations, even in the premalignant liver nodules or early small hepatocellular carcinomas which might be out of the targets of treatment in the clinical practice to date. Phylogenetical analysis demonstrated the mutational patterns differed between the early and progressive phases of the multistage hepatocarcinogenesis.

Academic Significance and Societal Importance of the Research Achievements

本研究では一般的に治療対象前と考えられる早期の肝内結節および治療対象の肝細胞癌のゲノム異常を比較検討することで、初期および進行期に獲得されるゲノム異常を全ゲノムシーケンス解析にて明らかにした。多段階肝発癌の初期および進行期の遺伝子異常について全ゲノムレベルで解析することで、多段階肝発癌メカニズムの解明に寄与するとともに、ゲノム進化過程に基づいた分子標的治療の最適化につなげる基礎的知見を得たことから、将来的なゲノム医療の発展に寄与するものと考えられる。

Report

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

    (3 results)

All 2024 2023

All Presentation (3 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] Whole-genome sequencing analysis on the hypovascular liver tumors at the early stage of multistep hepatocarcinogenesis2024

    • Author(s)
      Haruhiko Takeda, Atsushi Takai, Masako Mishima, Eriko Iguchi, Etsuro Hatano, Hiroshi Seno
    • Organizer
      Digestive Disease Week 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Whole-genome sequencing-based mutational analysis on hypovascular small hepatocellular carcinoma.2024

    • Author(s)
      Haruhiko Takeda, Atsushi Takai, Masayuki Ueno, Yosuke Fujii, Shigeharu Nakano, Masako Mishima, Eriko Iguchi, Tadashi Inuzuka, Etsuro Hatano, Hiroshi Seno
    • Organizer
      APASL 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 肝内多発乏血結節を有する肝癌症例の 全ゲノムシーケンス解析2023

    • Author(s)
      竹田治彦, 上野真行, 中野重治, 三嶋眞沙子, 井口恵里子, 恵荘裕嗣, 高井淳, 波多野悦朗, 妹尾浩
    • Organizer
      第27回日本肝がん分子標的治療研究会
    • Related Report
      2022 Research-status Report

URL: 

Published: 2022-04-19   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi