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Brit J Cancer:性别在转移性结直肠癌先天性和适应性免疫微环境中的作用

2020-05-26 MedSci原创 MedSci原创

这些数据证明了雄鼠和雌鼠对转移性CRC的免疫反应中存在生存相关的差异。雌鼠表现出细胞因子产生的变化,伴随着免疫细胞数量的增加,偏向Th2表型。在此模型中,CRC免疫反应的关键差异与生存率相关。

结直肠癌(CRC)女性患者比男性患者具有明显的生存优势。尽管对CRC的免疫反应很重要,但性别对肿瘤微环境(TME)的影响尚不十分清楚。近日,肿瘤领域权威杂志British Journal of Cancer上发表了一篇研究文章,研究人员假设性别所致的免疫反应不同可能有助于生存。

研究人员使用转移性CRC的小鼠模型,评估了局部和全身T细胞、巨噬细胞和细胞因子情况,并通过基于多重磁珠的阵列测量TME和血清细胞因子,同时使用FCA鉴定细胞和表型。IHC提供了T细胞浸润的形态学证据。

雌鼠具有存活率和T细胞浸润率提高。CD8、CD4和Th2种群与小鼠更长的生存期相关。雄鼠血清趋化因子和炎症相关细胞因子水平升高。在TME中,雄鼠细胞因子水平低于雌鼠,并且外周的细胞因子梯度较小。雌鼠肿瘤中IL-10+巨噬细胞数量增加,且与生存期有关。

这些数据证明了雄鼠和雌鼠对转移性CRC的免疫反应中存在生存相关的差异。雌鼠表现出细胞因子产生的变化,伴随着免疫细胞数量的增加,偏向Th2表型。在此模型中,CRC免疫反应的关键差异与生存率相关。这些差异支持跨TME的多方面转变。

原始出处:

Anita L. Ray.et al.The role of sex in the innate and adaptive immune environment of metastatic colorectal cancer.British Journal of Cancer.2020.https://www.nature.com/articles/s41416-020-0913-8

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