遗传祖先特定的分子和存活差异在与乳腺癌患者混合的患者
Aristeidis G Telonis1,2, Daniel A Rodriguez2,3, Philip M Spanheimer4
1Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL.
Annals of surgery
|December 11, 2023
概括
遗传祖先影响乳腺癌的分子特征和混合种群中的生存. 了解这些渐进的遗传变化是多样化的患者预后和风险分层的关键.
科学领域:
- 基因组学就是基因组学.
- 在瘤学瘤学.
- 人口遗传学 人口遗传学
背景情况:
- 乳腺癌患者的分类通常依赖于有限的种族/民族类别,阻碍了混合人群的研究.
- 混合个体经常被错误分类,限制了科学对疾病变异的理解.
- 当前的种族/民族分类和遗传祖先切断无法捕捉混合人口的复杂性.
研究的目的:
- 调查基因祖先百分比增量对乳腺癌分子和临床结果的影响.
- 分析不同程度的祖先如何影响乳腺癌亚型和混合个体的存活率.
- 为了识别乳腺癌中的祖先特定的分子模式.
主要方法:
- 使用了癌症基因组图谱 (TCGA) 队列.
- 针对基因混合乳腺癌患者的集中分析,其中<90%的祖先来自单一大陆群体.
- 采用机器学习来从基因表达和DNA甲基化数据中预测遗传祖先.
主要成果:
- 与90%以上的欧洲血统患者相比,混合乳腺癌患者的整体存活率提高了10年.
- 下非洲血统与光线A亚型中更长的存活率相关.
- 确定了与基因表达和DNA甲基化相关的新的祖先特异性内在PAM50亚型模式.
- 发现了遗传祖先和信号基因 (光线A) 或干基因 (基底类) 之间的相关性.
- 开发了一种机器学习模型,从有限的基因组或甲基化位点准确估计祖先.
结论:
- 渐进的遗传祖先变异导致乳腺癌的祖先特异性分子差异,影响生存结果.
- 考虑增量祖先对于未来的乳腺癌研究,预后和不同人群中的风险分层至关重要.
- 由遗传祖先驱动的分子区别甚至存在于已建立的PAM50亚型中.
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