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对SREBP1的DysUFMylation通过重编程脂质代谢来促进肝细胞癌的进展
Xukang Gao1,2,3, Zeping Han1,2,3, Min Xu4
1Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University, Shanghai, China.
Journal of clinical and translational hepatology
|November 27, 2025
概括
UFMylation 破坏了固醇调节元素结合蛋白1 (SREBP1) 的稳定,这是肝癌进展的关键因素. 抑制这一过程为肝细胞癌 (HCC) 提供了一个新的治疗策略.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 固醇调节元素结合蛋白1 (SREBP1) 对于脂质生成至关重要,并在瘤中升高.
- 在癌症中高SREBP1水平背后的机制尚未完全理解.
- 在SREBP1稳定性和肝癌进展中UFMylation的作用需要研究.
研究的目的:
- 调查UFMylation在肝癌进展中的作用.
- 探索UFMylation对固醇调控元素结合蛋白1 (SREBP1) 稳定性的影响.
- 评估向肝细胞癌 (HCC) 中UFMylation-SREBP1轴的治疗潜力.
主要方法:
- 利用液体染色学-双重质谱法来识别与UFMylation相关的蛋白质.
- 执行了UFMylation结合酶1 (UFL1) 和DDRGK域含有蛋白1 (DDRGK1) 的淘汰,以评估SREBP1的稳定性.
- 采用了体外和体内肝细胞癌 (HCC) 模型,并分析了临床HCC患者样本.
主要成果:
- 固醇调节元件结合蛋白1 (SREBP1) 被UFMylation破坏稳定,这与无处不在作用起作用.
- UFL1或DDRGK1的耗尽增加了SREBP1的稳定性,促进了HCC的进展.
- 在HCC组织中观察到UFL1/DDRGK1水平降低和SREBP1表达升高.
- 与Fatostatin和Lenvatinib联合治疗在低UFL1.1的HCC模型中显示出增强的疗效.
结论:
- UFMylation是一种关键的翻译后修饰,它破坏了醇调节元素结合蛋白1 (SREBP1) 的稳定.
- 调节不当的UFMylation-SREBP1通路有助于肝细胞癌 (HCC) 的进展.
- 针对UFMylation-SREBP1轴,可能使用Fatostatin和Lenvatinib,为HCC提供了一个新的治疗策略.
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