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2018 Fiscal Year Final Research Report

Identification of early tumorous lesion by atypical DNA methylation

Research Project

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Project/Area Number 16H05161
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Human pathology
Research InstitutionEhime University

Principal Investigator

Kitazawa Sohei  愛媛大学, 医学系研究科, 教授 (90186239)

Co-Investigator(Kenkyū-buntansha) 北澤 理子  愛媛大学, 医学部附属病院, 准教授 (00273780)
原口 竜摩  愛媛大学, 医学系研究科, 准教授 (00423690)
Research Collaborator Yasukawa masaki  
Takenaka atsushi  
Project Period (FY) 2016-04-01 – 2019-03-31
KeywordsDNAメチル化 / 組織細胞化学 / 癌細胞 / 老化 / ミトコンドリア
Outline of Final Research Achievements

Atypical DNA methylation, such as CpA, CpT, CpC (non-CpG-selective), or DNA methylation other than CpG-island, and DNA methylation in mitochondrial DNA is analyzed by use of the newly developed sequence-specific in situ demonstration of DNA methylation technique on gene expression mechanism under the influence of oxidative-stress and aging. Secondary neoplasia to dialysis or diabetic high oxidative stress and neuronal aging were the two major targets of this study. We discovered that atypical DNA methylation is increased with exposure to high oxidative stress and cell senescence. These findings open the gate for discovering of diagnostic cues to early stage of tumorigenesis.

Free Research Field

分子病理学

Academic Significance and Societal Importance of the Research Achievements

これまで、非CpG-island領域のメチル化シトシンの病理病態に及ぼす影響に関しては、世界でもほとんど検討されておらず、申請者らの形態的特徴に基づく細胞集団の選別、微量検体からのメチル化解析手法、非CpG-island領域を対象とした研究により、癌の進展過程で観察される癌細胞の多様性を規定するエピジェネティクス制御機構の一旦が解明され、新たな治療戦略へと展開することが期待される。現在進行している癌のゲノム診療のさらに先を目指す診断、治療へのあたらな選択肢を提供するものである。

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Published: 2020-03-30  

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