p53功能获取突变通过BRD4-依赖的CSF-1表达诱导转移
Gizem Efe1,2, Karen J Dunbar1, Kensuke Sugiura1
1Herbert Irving Comprehensive Cancer Center, Columbia University, New York, New York.
Cancer discovery
|September 7, 2023
概括
一个涉及p53-R172H依赖的BRD4-CSF-1轴的新途径促进食道状细胞癌 (ESCC) 肺转移. 抑制这一轴可以减少瘤的入侵和转移,为ESCC提供新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症转移 癌症转移
背景情况:
- TP53突变在食道状细胞癌 (ESCC) 中很常见,并且与转移有关.
- 在转移性ESCC病变中,殖民地刺激因子-1 (CSF-1) 表达升高,特别是以p53-R172H依赖的方式.
研究的目的:
- 研究p53-R172H依赖的CSF-1信号通路在ESCC肺转移中的作用.
- 在治疗ESCC的这一途径中确定治疗点.
主要方法:
- 对转移性ESCC病变中CSF-1表达的分析.
- 研究p53,BRD4和Csf-1促进体之间的相互作用.
- 在体内评估BRD4抑制对瘤入侵和转移的作用.
- 在BRD4抑制后测量循环中的CSF-1水平.
主要成果:
- 依赖p53-R172H的CSF-1信号通过Stat3酸化和上皮转介质转变 (EMT) 来促进瘤细胞入侵和肺转移.
- p53直接与Csf-1促进体结合,而BRD4促进这种相互作用以调节Csf-1转录.
- 抑制BRD4显著降低ESCC瘤入侵,肺转移和循环的CSF-1水平.
- 识别的BRD4-CSF-1轴与患者的存活率和瘤阶段相关.
结论:
- 一个新的p53-R172H依赖的BRD4-CSF-1轴驱动ESCC肺转移.
- 针对这一轴为管理ESCC转移提供了一个有前途的治疗策略.
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