由TRIM28介导的NUP37积累增强了脂质合成,以加速HCC进展
Zhiyi Liu1,2,3, Qinghe Hu1,2,3, Qing Luo1,2,3
1Institute of Digestive Diseases, Xuzhou Medical University, Xuzhou, Jiangsu, China.
Oncogene
|September 18, 2024
概括
核素37 (NUP37) 通过增强脂质合成,促进肝细胞癌 (HCC) 的进展. 含有三部分动图的28 (TRIM28) 稳定了NUP37,增加了它的水平,并推动了瘤的生长.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 细胞内脂质合成的升高是肝细胞癌 (HCC) 进展的标志.
- 在HCC中调节脂质代谢的分子机制需要进一步阐明.
研究的目的:
- 调查核素37 (NUP37) 在调节脂质合成和HCC进展中的作用.
- 确定负责HCC中NUP37调节失调的上游监管机构和机制.
主要方法:
- 在HCC患者队列中分析NUP37表达.
- 在体外研究涉及NUP37沉默HC细胞 (增殖,迁移,入侵,脂质合成测试).
- 在活体异种移植小鼠模型中评估NUP37在瘤生长中的作用.
- 共同免疫沉和西部抹杀用于识别相互作用的蛋白质并评估翻译后修饰 (SUMOylation,ubiquitination).
主要成果:
- 在HCC中,NUP37的表达显著上调,与预后不佳相关.
- 在实验室中,NUP37沉默抑制了HCC细胞的增殖,迁移,入侵和脂质合成,并在体内抑制了瘤的生长.
- 含有三部分基因的28 (TRIM28) 与NUP37相互作用,并提高其蛋白质水平.
- 通过TRIM28介导的NUP37的SUMOylation抑制了其K27结合的多基化,增强了NUP37蛋白质的稳定性.
结论:
- NUP37是脂质合成和HCC进展的关键驱动因素.
- 通过SUMOylation,TRIM28通过SUMOylation稳定NUP37,防止其蛋白质体降解.
- 针对TRIM28-NUP37轴代表了HCC的潜在治疗策略.
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