基于基因表达特征的乳腺癌化学危险因子的评估
Rayane Achebouche1, Olivier Taboureau2
1Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, INSERM U1133, F-75013, Paris, France.
Scientific reports
|December 17, 2025
概括
环境化学物质可能会影响乳腺癌的进展. 这项研究确定了改变细胞过程的特定化学物质,并模仿了乳腺癌患者的基因变化,这表明它们需要进一步调查.
科学领域:
- 在瘤学瘤学.
- 环境健康 环境健康
- 分子生物学分子生物学
背景情况:
- 乳腺癌是全球领先的诊断.
- 激素和乳腺癌之间的联系是已知的,但对环境化学物质对乳腺发育的影响不太清楚.
- 需要进一步的研究来确定与乳腺癌进展有关的环境化学物质.
研究的目的:
- 为了分析疑似致癌物质暴露的MCF7细胞的转录组学数据.
- 确定受这些化学物质影响的基因和途径,重点关注细胞增殖,死亡和DNA修复.
- 将体外发现与乳腺癌患者数据进行比较,以发现与患者基因放松调节模式相关的化学物质.
主要方法:
- 对暴露于161种疑似哺乳动物致癌物质的MCF7细胞系进行了转录学分析.
- 鉴定受影响的基因和信号通路,包括调节亡的基因,DNA损伤反应,MAPK级联和p53信号.
- 在体外/体外比较使用来自1,092个乳腺癌组织的RNA测序数据 (TCGA-BRCA数据集).
主要成果:
- 确定了影响细胞增殖,细胞亡和DNA损伤反应的基因和途径.
- 观察到明显的上调,例如对MAPK级联和p53介导信号传导的负调节.
- 发现了一组具有与乳腺癌患者基因放松调节模式相似的化学物质.
结论:
- 某些环境化学物质可以改变与乳腺癌相关的关键细胞过程.
- 这些化学物质会影响对癌症发展至关重要的特定信号通路.
- 与患者共享基因放松调节模式的化学物质代表了乳腺癌进展的潜在贡献者,需要进一步调查.
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