乳腺癌的基因组和转录组分析确定了与对新辅助化疗反应相关的新型特征
Gengshen Yin1, Liyuan Liu1,2,3, Ting Yu4
1Department of Breast Surgery, The Second Hospital of Shandong University, Jinan, 250033, China.
Genome medicine
|January 12, 2024
概括
新辅助化疗 (NAC) 改变了乳腺癌 (BC) 的基因组和转录组. 像CDKAL1P409L,ADGRA2和ADRB3这样的新生物标志物可以预测化疗耐药性和预后,指导个性化BC治疗.
科学领域:
- 在瘤学瘤学.
- 基因组学就是基因组学.
- 文字转录学 (Transcriptomics) 是一个学科.
背景情况:
- 新辅助化疗 (NAC) 是乳腺癌 (BC) 的标准,但由于瘤异质性,患者的益处尚不清楚.
- 多omics方法可以从NAC中揭示基因组和转录组的变化,并识别敏感性标记.
研究的目的:
- 在接受NAC的乳腺癌患者中研究多种OMICS变化.
- 识别与NAC反应和抵抗相关的分子特征.
主要方法:
- 50名BC患者 (NAC前后) 的233个样本的整体外体和RNA测序.
- 分析多omics数据以确定与NAC反应相关的分子特征.
- 在内部和外部队列中的验证,以及体外实验.
主要成果:
- TP53,TTN和MUC16是经常发生变化的基因. NAC降低了C>A转换和DNA修复途径突变/基因表达.
- NAC改变了免疫检查点基因表达和免疫/肌瘤细胞丰度.
- 不响应的瘤显示出更高的C>T替代;特定的放大 (8p11.23) 和删除 (3p13) 区域与响应有关. CDKAL1P409L变异和ADGRA2/ADRB3放大与多塞素耐药性相关,NAC反应更差,预后不佳.
结论:
- 在乳腺癌中,NAC会诱导显著的基因组和转录组变化.
- CDKAL1P409L,ADGRA2和ADRB3是化学疗法耐药性和不良预后的新生物标志物.
- 这些发现可以为乳腺癌患者的个性化治疗策略提供信息.
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