早期的肺腺癌会影响邻近组织中的DNA甲基化和基因表达
Yifan Wu1, Yadong Wang2,3, Yao Tang4,5,6
1The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China.
EMBO reports
|November 3, 2025
概括
早期肺腺癌 (LUAD) 改变了附近组织中的DNA甲基化. 这些微妙的甲基化变化,不仅仅是在边界,可以预测患者的预后.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 瘤微环境影响癌症的进展,但早期瘤对邻近组织基因表达的影响尚不清楚.
- 了解这些相互作用对于早期癌症检测和治疗策略至关重要.
研究的目的:
- 系统地分析DNA甲基化和围绕早期肺腺癌 (LUAD) 的组织中的基因表达变化.
- 调查这些表观遗传改变对患者预后的临床相关性.
主要方法:
- 对12名患者队列中的瘤和邻近组织进行了DNA甲基化分析.
- 分析了关键基因的mRNA和蛋白质表达.
- 用59名患者的队列来评估甲基化趋势的预后潜力.
主要成果:
- 确定了两个不同的DNA甲基化模式:瘤边界的急剧变化和逐渐的,浅层变化进一步扩展到邻近的组织.
- 大约17000个CpG位点显示了影响2655个基因的浅甲基化趋势.
- 在一些患者中,距离瘤高达10毫米的组织表现出类似瘤的甲基化模式.
- WNT7B蛋白表达呈现逐渐变化,支持邻近组织的调节作用.
- 浅层甲基化趋势与瘤特征相关,并显示出预后潜力.
结论:
- 早期的LUAD会在周围组织中引起广泛的,渐进的DNA甲基化变化,扩展到超出瘤的直接边界.
- 这些浅层甲基化趋势与瘤特征有关,可以作为预测患者预后的新生物标志物.
- 需要进一步的研究来探索这些发现在肺癌管理中的临床实用性.
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