JMJD6重新连接ATF4-依赖的谷甲代谢,在SPOP突变的前列腺癌中赋予铁死抵抗
Chuanjie Zhang1,2, Jiawei Ding1, Kiat Shenq Lim1
1Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Cancer research
|February 4, 2025
概括
由SPOP突变驱动的Jumonji域含有6 (JMJD6) 蛋白质的异常积累,促进前列腺癌中的铁性耐药性. 准JMJD6可提高对铁灭诱导物的敏感性,提供一种新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症新陈代谢 癌症新陈代谢
背景情况:
- 铁灭诱导剂在前列腺癌中表现有前途,但瘤异质性限制了疗效.
- 了解代谢交叉谈话调节器对于增强铁灭激活至关重要.
- 异常的Jumonji域含有6 (JMJD6) 蛋白积累与前列腺癌预后不佳相关.
研究的目的:
- 调查JMJD6在调节前列腺癌中代谢途径和铁灭性耐药性的作用.
- 阐明SPOP突变影响JMJD6水平和功能的机制.
- 评估JMJD6作为克服SPOP突变前列腺癌中ferroptosis耐药性的治疗标.
主要方法:
- 评估JMJD6蛋白水平及其与患者预后的相关性.
- 研究了SPOP突变体和JMJD6降解途径之间的相互作用.
- 分析了JMJD6介导的谷氨生物合成基因的表观遗传调节.
- 在临床前模型中评估了向JMJD6与ferroptosis诱导剂结合的疗效.
主要成果:
- 与前列腺癌相关的SPOP突变损害了JMJD6.6的蛋白质体降解.
- 升高的JMJD6和ATF4通过增强剂-促进剂相互作用促进谷氨生物合成.
- JMJD6招募调解子单元来激活参与谷氨代谢的基因 (例如,SLC7A11,GCLM).
- 通过增强的JMJD6-ATF4活性,SPOP突变赋予铁灭菌耐药性.
- 用SKLB325准JMJD6与埃拉斯协同作用,在SPOP突变前列腺癌模型中增加了ferroptosis敏感性.
结论:
- 由突变的SPOP诱导的JMJD6升高,导致表观遗传变化,增加了谷氨生物合成,并赋予了耐铁性.
- 在SPOP突变前列腺癌中,JMJD6代表了一种可用药物的标.
- 将JMJD6抑制剂与铁灭诱导剂结合起来,为前列腺癌提供了一个有前途的治疗策略.
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