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Published on: May 2, 2025
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升高的核PIGL会破坏cMyc/BRD4轴,并通过抑制瘤免疫逃避来改善PD-1阻塞疗法
Hua Yu1, Tiezhu Shi1, Linli Yao2
1Precise Genome Engineering Centre, School of Life Sciences, Guangzhou University, Guangzhou, 510006, China.
Cellular & molecular immunology
|June 6, 2023
概括
酸丁-糖甘生物合成类L (PIGL) 重编程瘤微环境增强了伦瓦替尼和PD-1阻塞治疗肝细胞癌 (HCC). 核PIGL可以改善患者的预后,并指导治疗决策.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 代谢工程是代谢工程.
背景情况:
- 肝细胞癌 (HCC) 构成一个重大挑战,通常需要联合治疗,如伦瓦替尼和编程死亡-1 (PD-1) 阻塞.
- 提高这些治疗的疗效需要了解影响反应的潜在代谢和微环境因素.
研究的目的:
- 为了确定抑制代谢酶,使HCC对伦瓦替尼和PD-1阻塞疗法敏感.
- 阐明酸丁-甘氨酸生物合成类L (PIGL) 在调节瘤微环境 (TME) 和治疗反应中的作用.
主要方法:
- 使用CRISPR-Cas9查来识别关键的代谢酶.
- 在体外和体内实验中评估了PIGL枯竭对瘤细胞和TME的影响.
- 进行了蛋白质相互作用和基因表达的分析,包括cMyc/BRD4和FGFR2-介导的酸化.
- 评估了临床数据与PIGL水平和患者结局的相关性.
主要成果:
- 皮格 (PIGL) 衰竭在体外没有影响瘤细胞的生长,但在体内重新编程了TME.
- 核PIGL破坏了cMyc/BRD4相互作用,降低了免疫抑制化学基因CCL2和CCL20.
- 由FGFR2在Y81的PIGL酸化促进了其细胞质局部化,增加了CCL2和CCL20.
- 升高的核PIGL与更好的HCC预后和CD8+T细胞透相关.
结论:
- 核PIGL在塑造抗瘤TME方面发挥着关键作用,增强了伦瓦提尼布和PD-1阻断的有效性.
- PIGL-Y81的酸化状态是TME中PIGL功能的一个关键调节者.
- 核PIGL强度和PIGL-Y81酸化作为指导HCC患者组合治疗的潜在生物标志物.
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