巨细胞 - 树突细胞 - T 细胞四级管弦反瘤免疫力和对检查点封锁的反应
Mehdi Chaib1, Muhammad Aminu2, Shelley Herbrich3
1Department of Immunology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
研究人员在瘤中发现了一种新的免疫结构,称为"四",由巨细胞,树突细胞和T细胞组成. 这些四级对于有效的抗瘤免疫是至关重要的,并预测患者对免疫检查点抑制剂 (ICI) 的反应.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 瘤微环境 瘤微环境
背景情况:
- 免疫检查点抑制剂 (ICI) 在许多固体瘤中表现出有限的疗效.
- 了解抗瘤免疫的细胞基础对于改善ICI治疗至关重要.
研究的目的:
- 识别和描述参与抗瘤免疫的新型多细胞免疫结构.
- 研究这些结构在免疫检查点封锁的反应中的作用.
主要方法:
- 在老鼠和人类瘤中的多重成像和空间转录学.
- 在瘤中分析细胞组成和空间组织.
- 评估ICOS-ICOSL途径在免疫细胞相互作用中的作用.
- 在膀癌患者中,四级形成与临床反应的相关性.
主要成果:
- 发现了一种新的多细胞免疫单元,称为"四" (巨细胞,cDC1s,CD4+ T细胞,CD8+ T细胞).
- 四级细胞早期聚集,依赖于ICOS-ICOSL通路,并含有特定的免疫细胞子集.
- 四位数内的CD8+T细胞被激活,相关的巨细胞支持T细胞功能.
- 格形成,而不是三或二,与用ICI治疗的膀癌患者的临床反应相关.
结论:
- 四位数代表一个基本的细胞结构协调抗瘤免疫力.
- 四位数对于有效的瘤根除至关重要,并预测对免疫检查点抑制剂的反应.
- 准四级形成可能会提高ICI在固体瘤中的疗效.
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