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在非小细胞肺癌中,P2RX1-负性中性粒细胞通过Upregulating PD-L1表达促进免疫抑制的微环境

Yan Zhang¹, Fenglin Zhang¹, Zhi Liu²

¹Department of Medical Oncology, Ma'anshan People's Hospital, Ma'anshan, 243000, Anhui Province, China.

Human immunology

|September 24, 2024

概括

在非小细胞肺癌 (NSCLC) 中缺乏P2RX1表达的中性粒细胞通过脂肪酸代谢通过调节PD-L1促进免疫抑制. 向P2RX1可能会抵消NSCLC中中性粒细胞驱动的免疫抑制.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
细胞生物学细胞生物学

背景情况:

中性粒细胞是关键的先天性免疫细胞,可以通过免疫抑制促进癌症的发展.
中性粒细胞在非小细胞肺癌 (NSCLC) 免疫抑制微环境中的特定作用和分子机制仍然不完全理解.

研究的目的:

在NSCLC的背景下,研究中性粒细胞中P2RX1的功能和分子机制.
探索NSCLC患者P2RX1表达,PD-L1和T细胞功能之间的关系.

主要方法:

在使用qRT-PCR,西斑和流细胞计的NSCLC患者和健康对照的中性粒细胞中量化P2RX1和PD-L1表达.
与CD8+ T细胞共培养P2RX1阳性和P2RX1阴性中性粒细胞,以评估T细胞增殖,细胞毒性和耗尽.
在P2RX1缺乏的中性粒细胞中分析了脂质代谢,包括脂肪酸,甘油三和FASN表达.

主要成果:

来自NSCLC患者的中性粒细胞显示P2RX1表达减少,与PD-L1水平相反相关.
缺乏P2RX1的中性粒细胞损害了CD8+T细胞的增殖和细胞毒性功能,同时促进了T细胞的枯竭.
中性粒细胞的P2RX1缺乏与脂肪酸代谢增加,脂质滴滴积累和FASN表达升高有关.
从机制上讲,P2RX1缺乏的中性粒细胞通过诱导脂肪酸代谢来调节PD-L1从而增强NSCLC的免疫抑制.

结论:

缺乏P2RX1的中性粒细胞通过增强脂肪酸代谢和PD-L1上调调节,为NSCLC的免疫抑制微环境做出贡献.
在非小细胞肺癌中,P2RX1代表了克服中性粒细胞介导免疫抑制的潜在治疗标.

关键词:

脂肪酸代谢脂肪酸代谢免疫抑制是一种免疫抑制.中性粒细胞中性粒细胞.非小细胞肺癌是非小细胞肺癌.这就是P2RX1的P2RX1.

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