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2021 Fiscal Year Final Research Report

Development of esophagus cancer acquired Nrf2 activation

Research Project

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Project/Area Number 19K07395
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionTohoku University

Principal Investigator

TAGUCHI Keiko  東北大学, 医学系研究科, 准教授 (20466527)

Project Period (FY) 2019-04-01 – 2022-03-31
KeywordsNrf2 / 食道 / がん / 細胞競合
Outline of Final Research Achievements

We examined how Nrf2 plays roles in esophageal cancers developed by a chemical carcinogen, using two model mice that harbor acquired deletion of Nrf2 or Keap1 genes in esophageal epithelium. Partial appearance o Keap1-deleted cells in esophageal epithelium conferred DNA damage to Keap1-expressing cells, resulting in 4NQO-induced tumor promotion. Nrf2-addicted cancers are found approximately 30% of esophageal squamous cell carcinoma. This study is useful to understand development of Nrf2-addicted cancers.

Free Research Field

生化学

Academic Significance and Societal Importance of the Research Achievements

Nrf2活性化がんは、食道がんのみならず様々な癌腫で見つかっており、がん形成におけるNrf2の貢献は興味深いテーマである。Nrf2活性化を賦与した細胞からはがんは形成されず、むしろ組織から排除される細胞競合が観察された。本研究から、Nrf2の活性化自体は細胞のがん化には寄与しないことが明らかになった。Nrf2の活性化はがん形成の過程で獲得されて、がん細胞の生存に働くことが考えられた。

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Published: 2023-01-30  

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