在肉瘤中,B细胞与生存和免疫疗法反应有关
Florent Petitprez1,2,3,4, Aurélien de Reyniès4, Emily Z Keung5
1Team Cancer, Immune Control and Escape, Centre de Recherche des Cordeliers, INSERM, Paris, France.
Nature
|January 17, 2020
概括
研究人员将软组织瘤分为五种免疫表型. 在E类瘤中,富含B细胞的三级淋巴体结构表明PD1阻塞治疗的生存率和反应更好.
科学领域:
- 癌症学
- 免疫学
- 癌症研究
背景情况:
- 软组织肉瘤 (STS) 是一个多样化的癌症群体,有50多种亚型.
- 临床表现和治疗反应,包括免疫检查点阻塞,在STS亚型之间有显著差异.
研究的目的:
- 研究608种STS瘤的基因表达特征,以了解临床变异性.
- 根据瘤微环境的组成建立基于免疫的STS分类.
主要方法:
- 分析608个软组织瘤的基因表达特征.
- 独立验证队列的现场分析以表征免疫表型.
- 在2期临床试验中对PD1阻断 (pembrolizumab) 的反应的评估.
主要成果:
- 确定了五种不同的免疫表型:免疫低 (A,B),免疫高 (D,E) 和高度血管化 (C).
- 类E瘤表现出富含B细胞,T细胞和毛囊树突细胞的三级淋巴状结构.
- B 细胞是最强的预后因素;E 类患者的生存率提高,对 pembrolizumab 的反应较高.
结论:
- 在软组织肉瘤患者中确认了不同的免疫亚型.
- 富含B细胞的三级淋巴体结构是预测治疗反应和指导临床决策的潜在生物标志物.
- 这些发现可能对其他免疫相关疾病有更广泛的含义.
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