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准TRIM21-PD-1轴可以加强免疫检查点阻塞和CAR-T细胞治疗

Jie Shi¹, Zijian Zhang², Hsin-Yi Chen³

¹Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Hubei Key Laboratory of Tumor Biological Behavior, Hubei Provincial Clinical Research Center for Cancer, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, China; Taikang Center for Life and Medical Sciences, Wuhan University, Wuhan 430071, China.

Molecular therapy : the journal of the American Society of Gene Therapy

|February 5, 2025

概括

TRIM21通过稳定PD-1来阻碍T细胞激活和抗瘤免疫. 消除TRIM21可以增强T细胞功能,改善癌症免疫治疗结果.

科学领域:

免疫学免疫学免疫学
分子生物学分子生物学
在瘤学瘤学.

背景情况:

T细胞失调限制了癌症免疫治疗的成功.
了解T细胞调节是改善CAR-T和免疫检查点封锁等疗法的关键.

研究的目的:

研究TRIM21在调节T细胞功能和抗瘤免疫力中的作用.
阐明TRIM21影响T细胞激活的分子机制.

主要方法:

评估TRIM21对CD8+T细胞激活和抗瘤免疫的影响.
使用的Trim21淘汰赛 (KO) 模型.
分析了编程细胞死亡-1 (PD-1) 的无处不在状态.

主要成果:

TRIM21 损害了 CD8+ T 细胞的激活和抗瘤免疫力.
TRIM21催化了PD-1的K63结合的泛基化,使其稳定.
Trim21 KO降低了PD-1表达,增强了T细胞激活和瘤对免疫治疗的敏感性.
在Trim21 KO CAR-T细胞中,抗瘤疗效得到改善.

结论:

通过TRIM21介导的PD-1稳定抑制了CD8+T细胞的激活.
准TRIM21-PD-1轴是增强癌症免疫疗法的潜在策略.

关键词:

卡特-T疗法是一种治疗方法.与K63相关的无处不在化.在PD-1中使用PD-1.在 TRIM2121 中.癌症免疫疗法免疫疗法

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