ZBTB7B是一种通过抑制c-Jun表达和功能来抑制肝细胞癌发病的容许性调节剂
Yue Zhu1, Qinqin Wang2, Xinyu Xie1
1State Key Laboratory of Cell Biology, Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
Cell death & disease
|January 15, 2024
概括
转录因子ZBTB7B在肝癌发病时起作用作为瘤抑制剂. 它的缺失通过重新激活胎儿基因程序并促进c-Jun信号传递,加速肝细胞癌 (HCC).
科学领域:
- 肝病学和癌症生物学 肝病学和癌症生物学
- 分子瘤学分子瘤学
- 表观遗传学和基因调控
背景情况:
- 肝细胞癌 (HCC) 的启动是复杂的,并且对调节者的了解很少.
- 成年肝脏特异性基因表达在HCC中在全球范围内下调.
- 成年人肝丰富转录因子可能在HCC中具有瘤抑制作用.
研究的目的:
- 确定和描述成年人肝丰富转录因子在HCC发起中的作用.
- 研究ZBTB7B调节肝癌发生的分子机制.
主要方法:
- 在小鼠肝癌模型中的肝细胞特异ZBTB7B淘汰.
- 水力动态瘤基因转移 (Akt,N-Ras).
- 综合转录基因,蛋白基因和ChIP测序分析.
- 对人类HCC患者数据的分析.
主要成果:
- 肝细胞特异性ZBTB7B淘汰促进由瘤基因Akt和N-Ras.诱导的HCC发展.
- 缺少ZBTB7B会使肝细胞对瘤转化产生敏感,并加快HCC的启动.
- 缺少ZBTB7B会降低成人肝脏基因的调节,导致胎儿状的状态,并激活c-Jun信号.
- ZBTB7B直接与染色质结合,与c-Jun竞争,并抑制其致癌功能.
- 一个ZBTB7B-c-Jun共同调节的基因特征在早期HCC下调调节,并预测良好的预后.
结论:
- ZBTB7B充当HCC启动的允许调节器.
- 通过维持成年肝脏基因表达和抑制c-Jun.,ZBTB7B抑制HCC.
- ZBTB7B代表了肝细胞癌的潜在治疗标.
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