在三阴性乳腺癌中塑造肺转移的表观遗传程序
Diego Marzese1, Andres Bedoya-Lopez, Javier Orozco
1IdISBa.
Research square
|November 24, 2025
概括
三重阴性乳腺癌 (TNBC) 肺转移是由改变的DNA甲基化驱动的. 肺病变中的全球低甲基化和特定基因变化突出显示了表观遗传重编程.
科学领域:
- 在瘤学瘤学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组学就是基因组学.
背景情况:
- 三阴性乳腺癌 (TNBC) 是癌症死亡的主要原因.
- 远程转移,特别是到肺部,在TNBC中构成了重大的临床挑战.
- 表观遗传变化的作用,如DNA甲基化,在驱动TNBC转移中的作用尚未完全理解.
研究的目的:
- 调查DNA甲基化在推动TNBC肺转移中的作用.
- 确定与TNBC肺部殖民相关的特定表观遗传变化和基因.
- 探索TNBC肺部传播的潜在预后标志物.
主要方法:
- 综合的多学科分析,整合了表观基因组和转录基因组数据.
- 对TNBC异种移植模型 (原发性瘤,淋巴结,肺转移) 的全基因组DNA甲基化概况.
- 在临床TNBC患者队列中对DNA甲基化和基因表达的分析.
主要成果:
- 在异种移植的肺转移中观察到明显的全球低甲基化,与临床数据一致.
- 促进子区域的DNA甲基化变化在与入侵和扩散相关的途径中得到了丰富.
- 确定了22个表观遗传调节的基因,其中AK1,SLC2A5,TPI1和ZBTB17的表达升高与肺转移风险增加相关.
结论:
- 改变的DNA甲基化模式是TNBC肺部殖民的关键驱动因素.
- 表观遗传重编程在器官特异性转移中发挥着关键作用.
- AK1,SLC2A5,TPI1和ZBTB17代表了TNBC肺部传播的潜在预后标志物.
相关概念视频
Metastasis
6.3K
Metastasis is the spread of cancer cells from the original site to distant locations in the body. Cancer cells can spread via blood vessels (hematogenous) as well as lymph vessels in the body.
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
Epithelial-to-Mesenchymal Transition
The epithelial-to-mesenchymal transition or EMT is a developmental process commonly observed in wound healing, embryogenesis, and cancer metastasis. EMT is induced by transforming growth factor-beta (TGF-β) or receptor tyrosine kinase (RTK) ligands, which further...
6.3K
Epigenetic Regulation
3.7K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.7K
Epigenetic Regulation
33.4K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
33.4K


