在肝细胞癌进展中FOXP2的机制 通过ferroptosis 通过RBM15B介导的m6A修改通过ferroptosis
Wenquan Liu1, Jiaqi He2, Jing Zheng2
1Department of Medical Oncology, The Second Affiliated Hospital of Jiujiang University, Jiujiang, China. WenquanLiuu@163.com.
Applied biochemistry and biotechnology
|February 9, 2026
概括
叉头盒P2 (FOXP2) 通过触发铁亡来抑制肝癌的生长. 它通过RBM15B/KDM4C轴向下调节SLC7A11表达,抑制细胞增殖并增强细胞死亡.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞死亡机制 细胞死亡机制
背景情况:
- 肝细胞癌 (HCC) 是癌症死亡的一个重要原因,经常发生在慢性肝病和肝硬化患者中.
- 了解HCC进展的分子调节者,特别是那些参与细胞死亡途径 (如铁亡) 的分子调节者,对于开发有效疗法至关重要.
研究的目的:
- 研究转录因子FOXP2在肝细胞癌 (HCC) 进展中的作用.
- 阐明FOXP2通过铁死影响HCC的分子机制,重点关注其与RBM15B,KDM4C和SLC7A11.7的相互作用.
主要方法:
- 使用西部斑块和RT-qPCR分析HCC和正常细胞中的FOXP2,RBM15B和KDM4C表达.
- 在FOXP2干预后评估细胞增殖,代谢活性,铁灭标志物,铁度和氧化应激.
- 使用ChIP,双化酶试验和MeRIP,研究蛋白质-蛋白质相互作用 (FOXP2-RBM15B) 和调节途径 (RBM15B/KDM4C/m6A修饰,KDM4C/H3K9me3/SLC7A11促进剂丰富).
- 在异种移植小鼠模型中的验证.
主要成果:
- 发现FOXP2表达在HCC组织中受到下调.
- 过度表达FOXP2显著抑制了HCC细胞的增殖,并促进了铁亡.
- FOXP2抑制了RBM15B的表达,这反过来又抑制了KDM4C的m6A修饰,导致KDM4C的表达减少,H3K9me3水平增加,并抑制了SLC7A11的表达,从而增强了ferroptosis.
- 对RBM15B或KDM4C的上调抵消了FOXP2过度表达的影响,减弱了铁亡并恢复了HCC细胞生长.
结论:
- 在HCC中,FOXP2通过促进ferroptosis和抑制细胞增殖,起到瘤抑制作用.
- 该机制涉及通过RBM15B/KDM4C轴以m6A依赖的方式抑制SLC7A11表达.
- 准FOXP2通路可能代表HCC的新治疗策略.
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