替代推广者推动了TNBC的转录组重编程和预测分层
Simran Jit1,2, Kirti Jain1,2, Leepakshi Dhingra1
1CSIR-Institute of Genomics and Integrative Biology (CSIR-IGIB), New Delhi, 110025, India.
NPJ systems biology and applications
|October 31, 2025
概括
替代性促进剂的使用会影响三阴性乳腺癌 (TNBC) 的基因表达. 这项研究揭示了特定的促进器开关,并确定了用于预测患者无复发存活率的新生物标志物.
科学领域:
- 基因组学就是基因组学.
- 癌症生物学 癌症生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 三阴性乳腺癌 (TNBC) 是具有侵略性和异质性的,在转录前的水平上对基因表达的理解很差.
- 短读RNA测序在解决转录多样性方面存在局限性,阻碍了研究替代促进体使用的研究.
- 替代性促进剂的使用是癌症的关键调节机制,但在TNBC中仍未得到充分探索.
研究的目的:
- 调查促进者级量化,以推断TNBC中的活性促进者使用情况.
- 确定TNBC特异性和亚型丰富的活性替代促进剂 (AAP).
- 探索TNBC患者结局中替代性促进体活性的预后价值.
主要方法:
- 利用来自360个TNBC瘤和88个正常组织的RNA测序数据进行促进体水平量化.
- 集成数据与H3K4me3和H3K27ac ChIP-seq分析表观遗传修饰.
- 开发了一个结合促进者活动和临床变量的预后模型.
主要成果:
- 鉴定了TNBC特定的AAP和HDAC9基因中的关键促销器开关,表观遗传调节.
- 发现了特定亚型的替代性促进活性 (例如,SEC31A,AKAP9),在基因表达水平上不明显.
- 在TNBC中,HUWE1和FTX的替代促进者独立预测了无复发生存期 (RFS).
结论:
- 像HDAC9这样的基因中的促进器切换是TNBC中的瘤特异性调节机制.
- 替代性促进者分析提供了对TNBC异质性和监管的见解.
- 促进者活动代表了改善TNBC风险分层和预测患者预后的有希望的生物标志物.
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