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一个GAPDH血化系统将CD8⁺ T细胞的糖质代谢与抗瘤免疫结合起来

Xu Wang¹, Sheng-Qiao Fu¹, Xiao Yuan¹

¹Department of Radiation Oncology, Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, P.R. China.

|January 12, 2024

概括

一种新的甘-3-酸盐脱酶 (GAPDH) 血清化途径增强了CD8+ T细胞代谢和抗瘤免疫力. 这种受体独立的修饰增强了免疫反应,提供了新的治疗途径.

科学领域:

免疫学免疫学免疫学
细胞的新陈代谢
神经科学是一个神经科学.

背景情况:

血清素 (5-基三胺 [5-HT]) 通常通过受体发出信号.
新出现的证据突出显示了5-HT在翻译后修饰中的作用,特别是血清化.
除了正规信号外,5-HT对免疫细胞功能的影响是一个活跃的研究领域.

研究的目的:

阐明一种新型的5-HT信号通路,涉及CD8+ T细胞中的甘甲基-3-酸盐脱酶 (GAPDH).
调查GAPDH血清化在调节T细胞代谢和抗瘤免疫力中的作用.
探索操纵这种途径用于癌症免疫治疗的治疗潜力.

主要方法:

研究了组织转谷氨酶2 (TGM2) 在催化GAPDH血清化中的酶活性.
评估了 GAPDH 血清化对 CD8+ T 细胞局部化,新陈代谢和功能的影响.
研究了基酶1 (TPH1),血清素转运体 (SERT) 和单胺氧化酶A (MAOA) 在T细胞中调节细胞内5-HT水平中的作用.
在体内评估了TPH1-过度表达的化学抗原受体T (CAR-T) 细胞的抗瘤疗效.

主要成果:

鉴定了一种TGM2介导的系统,用于在谷氨酸262.2.中对GAPDH的血清化.
证明GAPDH血清化促进了CD8+T细胞的糖分代谢转变,增强了它们的抗瘤活性.
显示CD8+ T细胞通过TPH1合成和SERT吸收积累细胞内5-HT,MAOA作为负调节剂.
证实了采用转移5-HT生成的CAR-T细胞引起了强大的抗瘤反应.

结论:

GAPDH血清化是一种新的,受体独立的机制,调节CD8+T细胞代谢和抗瘤免疫力.
这一途径突出了神经免疫相互作用的新维度.
准5-HT-GAPDH轴为增强癌症免疫治疗提供了一个有希望的策略.

关键词:

5-HT的使用方法是:CD8 (((+) T细胞是T细胞中的一个.在GAPDH中使用.葡萄糖溶解是什么后翻译修改后的修改这种类型的血清素 (serotonin) 是血清化 (serotonylation) 是一种治疗方法.瘤免疫力免疫力

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