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与寒冷的三阴性乳腺癌相关的瘤排水淋巴结的特点是Th2-关联的微环境

Weihua Guo¹, Jiayi Tan^1,2, Lei Wang^1,3

¹Department of Immuno-Oncology, Beckman Research Institute, City of Hope, Duarte, CA, USA.

Nature communications

|October 4, 2024

概括

在寒冷的三阴性乳腺癌中,瘤排水淋巴结 (TDLNs) 显示出不平衡的免疫调节,有利于T助手2 (Th2) 细胞的原始化. 这导致免疫细胞透到瘤的减少.

科学领域:

免疫学免疫学免疫学
在瘤学瘤学.
癌症研究癌症研究

背景情况:

瘤排水淋巴结 (TDLNs) 在瘤免疫循环中至关重要.
了解TDLN对瘤淋巴细胞透的影响是有限的.
三阴性乳腺癌 (TNBC) 呈现出不同的免疫微环境 ("热"与"冷").

研究的目的:

直接比较TDLN中免疫基因表达的"冷"和"热"人体TNBC.
研究TDLN免疫特征对瘤微环境特征的影响.
为了确定与瘤免疫相关的TDLN内的特定免疫细胞相互作用.

主要方法:

在TDLN中免疫基因表达的基于机器学习的自我相关性分析.
多重复合免疫光染色用于识别空间细胞群.
分析瘤微环境 (TME) 特性,包括纤维化和免疫细胞比率.

主要成果:

排泄"冷"TNBC的TDLN (TDLN_冷) 显示出不平衡的内节管免疫调节.
证据表明,在TDLN_Cold中,成熟的树突细胞 (DC) 优先启动T辅助2 (Th2) 细胞.
在TDLN_Cold和相关瘤中观察到IL4产生性巨细胞 (MCs) 和Th2-相关纤维性TME的增加.

结论:

在TDLN中的IL4+巨细胞可能有助于Th2极化.
在TDLNs中的Th2两极化与免疫透到瘤的减少有关.
TDLN免疫概况为"冷"瘤特征和潜在的治疗点提供了洞察力.

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