正常粘膜中的DNA甲基化变异性:在患有腺瘤多的患者中,一种野外癌症标志物
Josephine Yates1,2,3, Helen Schaufelberger4, Roland Steinacher5
1Department of Computer Science, Institute for Machine Learning, ETH Zürich, Zurich, Switzerland.
Journal of the National Cancer Institute
|January 26, 2024
概括
野外癌症,正常细胞向癌症的过渡,在右结肠中早期被检测出来. 靠近多胞体的正常组织中的DNA甲基化变化可以预测癌症风险并帮助预防策略.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 结肠直肠癌研究研究
- 基因组医学是基因组医学.
背景情况:
- 现场癌变描述了正常细胞变得易患癌症.
- 评估结肠中的这一过程有助于预测和预防结肠直肠癌风险.
研究的目的:
- 在患有腺瘤多体 (AP) 的个体中检测现场癌症.
- 评估DNA甲基化变异及其作为癌症早期检测和风险分层的生物标志物的潜力.
主要方法:
- 从瑞士表观遗传结直肠癌研究 (SWEPIC) 中分析了1111名参与者的DNA甲基化和84名参与者的RNA测序.
- 对分辨能力,基因组定位,临床相关性和RNA表达模式的评估甲基化变异.
- 在外部队列中验证的结果.
主要成果:
- 鉴定了558个独特的DNA位点,在与APs相邻的正常头部组织中具有失调的甲基化.
- 开发了一个使用腺瘤相关的差异变量和甲基化CpG (aDVMCs) 的分类器,该分类器区分了健康与AP相邻组织 (ROC AUC = 0.63-0.81) 并在外部集中验证 (ROC AUC = 0.82-0.88).
- 发现aDVMC失调与多多重性和年龄相关,并且在活性基因组区域中富含相关的改变基因表达.
结论:
- 现场癌症在瘤转变期间在右结肠的早期开始.
- aDVMC失调与腺瘤的出现有关,可以作为加强监测的分层工具.
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