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在直肠癌全新辅助疗法期间,T细胞和内皮细胞的重塑

Qianqian Gao¹, Xinnan Ling², Leen Liao³

¹Institute for Data-Driven Tumor Immunology, Chongqing Medical University, Chongqing 400016, China; Institute of Cancer Research, Shenzhen Bay Laboratory, Shenzhen 518132, China.

|November 7, 2025

概括

总的新辅助疗法 (TNT) 通过改变瘤微环境来增强直肠癌治疗. 它减少了调节性T细胞,并增强了CD8+T细胞,促进了免疫反应,并可能改善完整反应率.

科学领域:

在瘤学瘤学.
免疫学免疫学免疫学
癌症生物学癌症生物学

背景情况:

总的新辅助疗法 (TNT) 是局部晚期直肠癌 (LARC) 的标准.
免疫系统对TNT有效性的作用尚未完全理解.
了解瘤微环境 (TME) 变化对于优化LARC治疗至关重要.

研究的目的:

为了研究LARC中TNT的免疫重塑机制.
描述不同新辅助疗法后的TME动态.
为了发现TNT诱导的特定免疫细胞和内皮细胞相互作用.

主要方法:

单细胞RNA测序的一个细胞.
测序T细胞受体的测序
空间转录基因组序列的测序
来自LARC患者的治疗前和治疗后匹配样本的分析.

主要成果:

在TME中,TNT显著减少了调节性T细胞.
在TNT后观察到,产生IFNG的CD8+效应因子记忆T细胞的丰度增加.
在CD8+ T细胞透和ACKR1+内皮细胞之间发现了相关性.
激活的CD8+ T细胞和内皮细胞参与抗原呈现和T细胞激活.

结论:

通过调节T细胞种群和促进抗瘤免疫力,TNT重塑TME.
CD8+ T 细胞和内皮细胞之间的相互作用是TNT有效性的关键机制.
这些发现为LARC中TNT反应的免疫基础提供了洞察力.

关键词:

CD8 (((+) T细胞是T细胞中的一个.IFNγ IFNγ 的意思它们是内皮细胞的内皮细胞.这是一个反循环.新辅助性化疗或放射治疗.这是直肠癌.总的新辅助疗法治疗.

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