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2022 Fiscal Year Final Research Report

Establishment of a new personalized drug selection system based on drug sensitivity of breast cancer stem cells

Research Project

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Project/Area Number 20K08981
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55010:General surgery and pediatric surgery-related
Research InstitutionHiroshima University

Principal Investigator

Kadoya Takayuki  広島大学, 原爆放射線医科学研究所, 講師 (20609763)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywords乳癌 / 乳癌幹細胞 / 遺伝子解析 / 薬剤感受性
Outline of Final Research Achievements

The percentage of CD44+/CD24- cells in breast cancer cells obtained from 48 breast cancer tissues increased in 93% of cases before and after spheroid culture. In 48 cases, breast cancer stem cells were classified into three groups according to their positive patterns for the mesenchymal markers Twist1, Snail, and Vimentin. The 48 breast cancer stem cells were classified into three groups according to the positive patterns of mesenchymal markers Twist1, Snail, and Vimentin. Gene expression analysis by DNA microarray showed that breast cancer stem cells were classified into two major groups.

Free Research Field

乳癌

Academic Significance and Societal Importance of the Research Achievements

今回の我々の研究の中で最もインパクトのある結果は、患者の乳癌組織から安定的に乳癌幹細胞が得られるようになったことである。それにより、乳癌幹細胞の生物学的特徴、遺伝子情報、薬剤感受性などを患者ごとに知ることができるようになり、治療戦略を立てる上で非常に有用である。次に、これまで一つのサブタイプを遡ると乳癌幹細胞は一つのタイプからなるのではと考えられていたが、我々が得た結果からは乳癌幹細胞の中には少数であるがCD44+/CD24-以外の乳癌幹細胞も存在し、ホルモン感受性、EMTマーカーの発現からも多様性があることが明らかになったことである。

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Published: 2024-01-30  

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