伊塔科纳酸的癌细胞内在生物合成促进了瘤免疫性
Zining Wang1, Lei Cui1, Yanxun Lin1
1State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China.
The EMBO journal
|September 30, 2024
概括
瘤细胞产生伊塔科纳酸,增强抗瘤免疫力和免疫疗法的疗效. 蒂默索尔是一种疫苗防腐剂,可以促进瘤中的伊塔科纳酸盐生产,改善免疫反应并抑制生长.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢过程中的代谢.
- 在瘤学瘤学.
背景情况:
- 伊塔科纳酸是一种克雷布斯循环代谢物,调节巨细胞的免疫功能.
- 伊塔科纳酸在瘤细胞中的作用及其对抗瘤免疫力的影响以前是未知的.
研究的目的:
- 研究瘤内在伊塔康酸盐生产在调节瘤免疫性和抗瘤免疫反应中的作用.
- 确定瘤细胞中伊塔科纳酸盐生产的新型诱导剂,并探索它们的治疗潜力.
主要方法:
- 评估了 cis-aconitate 脱碳酶 (ACOD1/IRG1) 和 itaconate 在瘤细胞中的作用.
- 鉴定了硫黄素作为瘤细胞中IRG1的特定诱导剂.
- 阐明了用于提默萨尔诱导的伊塔康酸盐生产的信号通路 (ROS-RIPK3-IRF1).
- 研究了伊塔科纳酸对抗原呈现和T细胞反应的影响.
- 在临床前瘤模型中评估了蒂默萨尔的治疗疗效,包括与免疫治疗的结合.
主要成果:
- 增加瘤内在IRG1/itaconate促进了瘤免疫性和抗瘤免疫力.
- 提默沙尔通过ROS-RIPK3-IRF1通路在瘤细胞中特别诱导IRG1表达和伊塔康酸盐的产生.
- 伊塔科纳特通过促进TFEB核转移来提高抗原呈现的调节.
- 内硫醇通过以T细胞依赖的方式激活瘤免疫微环境来抑制瘤生长.
- 缺少IRG1会影响瘤对丁醇的反应;丁醇增强了采用T细胞和抗PD1治疗的疗效.
结论:
- 瘤内在的IRG1/伊塔康酸在增强瘤免疫性和抗瘤免疫反应方面发挥着至关重要的作用.
- 蒂默索尔是一种新型治疗剂,可诱导瘤伊塔康酸盐的产生,增强抗瘤免疫力和免疫疗法.
- 向瘤伊塔康酸盐生产提供了一个有希望的转化策略,以改善癌症免疫治疗结果.
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