O-GlcNAcylated RALY通过调节USP22 mRNA核出口来促进肝细胞癌细胞的增殖
Shiwei Liu1, Qingpeng Lv2, Xinyu Mao2
1School of Medicine, Southeast University, Nanjing 210009, China.
International journal of biological sciences
|July 12, 2024
概括
研究人员确定RALY是肝细胞癌 (HCC) 的致癌因子. O-GlcNAcylation稳定了RALY,通过RALY/USP22mRNA轴促进了HCC细胞的增殖,RALY-PROTACs显示了治疗潜力.
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:
- 肝细胞癌 (HCC) 是癌症死亡的主要原因之一,其机制尚不清楚.
- RNA结合蛋白在癌症中起着关键作用,但它们在HCC中的特定功能需要进一步阐明.
研究的目的:
- 研究RNA结合蛋白RALY在肝细胞癌 (HCC) 中的作用.
- 揭示RALY在HCC进展中的调控机制和功能意义.
- 开发针对性治疗策略,对抗HCC中的RALY.
主要方法:
- 在HCC中RALY表达的定量分析.
- 通过O-GlcNAcylation和TRIM27介导的全方位化对RALY稳定性调节的研究.
- RNA免疫沉 (RIP) 用于识别RALY相互作用RNAs.
- 开发和合成一种新的RALY蛋白质降解剂 (RALY-PROTAC).
- 在体外和体内测试以评估HCC细胞增殖.
主要成果:
- RALY的表达很高,并作为一种致癌因子,促进HCC细胞的增殖,在体外和体内.
- 在Ser176的O-GlcNAcylation通过防止TRIM27介导的降解来提高RALY的稳定性.
- 拉利与USP22mRNA相互作用,增加其细胞质局部化和蛋白质表达,从而推动HCC细胞的增殖.
- 拉利-PROTACs有效地降解了拉利蛋白.
结论:
- 一个新的O-GlcNAcylation/RALY/USP22mRNA轴加剧了HCC细胞的增殖.
- 拉利-PROTACs显示出作为RALY过度表达HCC的治疗方法的潜力.
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