免疫检查点基因在肿瘤中的泛素化降解机制

Ubiquitination and Degradation Mechanisms of Immune Checkpoint Genes in Tumors

摘要: 免疫检查点蛋白作为重要的免疫调节分子，其表达水平直接影响肿瘤免疫治疗效果。研究发现泛素化降解途径在调控免疫检查点基因表达中发挥关键作用。通过系统分析PD-1与PD-L1以及CTLA-4等主要免疫检查点分子的泛素化降解机制，阐明E3泛素连接酶与去泛素化酶等关键分子在该过程中的调控作用，揭示泛素化修饰与免疫逃逸之间的关系。深入理解免疫检查点基因的泛素化降解调控网络，为开发新型肿瘤免疫治疗策略提供理论基础。

Abstract: As important immune regulatory molecules, the expression level of immune checkpoint proteins directly affects the efficacy of tumor immunotherapy. Research has found that the ubiquitination degradation pathway plays a key role in regulating immune checkpoint gene expression. By systematically analyzing the ubiquitination degradation mechanisms of major immune checkpoint molecules such as PD-1, PD-L1, and CTLA-4, the regulatory roles of key molecules such as E3 ubiquitin ligase and deubiquitinase in this process are elucidated, revealing the relationship between ubiquitination modification and immune escape. A deep understanding of the ubiquitination degradation regulatory network of immune checkpoint genes provides a theoretical basis for developing novel tumor immunotherapy strategies.