一个促进瘤的炎症性SPP1+巨细胞-IL-6-CRP轴驱动膀癌的免疫功能障碍.
Michelle A Tran1, Byuri Angela Cho2, Sudeh Izadmehr3
1Icahn School of Medicine at Mount Sinai New York, New York United States.
Cancer discovery
|February 26, 2026
概括
由IL-6和C-反应蛋白 (CRP) 标记的系统性炎症与尿路膀癌 (UC) 中的免疫抑制性瘤巨细胞相关. 准这些巨细胞可能会提高免疫检查点阻断 (ICB) 治疗的有效性.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 翻译研究是翻译研究.
背景情况:
- 免疫检查点阻塞 (ICB) 为泌尿道膀癌 (UC) 提供了一个有希望的治疗方法,但有限的反应率需要进一步调查.
- 系统性炎症,由高C反应蛋白 (CRP) 表示,与UC患者的临床结果较差有关.
- 巨细胞在塑造瘤微环境 (TME) 和影响治疗反应方面发挥着至关重要的作用.
研究的目的:
- 调查系统性炎症标记物 (IL-6,CRP) 与UC中瘤巨细胞透之间的关联.
- 为了在TME中识别与全身炎症相关且影响ICB疗效的特定巨细胞子集.
- 阐明巨细胞通过哪些机制在UC中调解炎症诱导的ICB耐药性.
主要方法:
- 对血IL-6和CRP水平与多个ICB治疗的UC队列中瘤巨细胞透的分析.
- 单细胞和大量RNA测序迄今为止最大的UC患者地图,以描述TME组成.
- 空间和功能分析,以评估已识别的巨细胞子集的活动和相互作用.
主要成果:
- 血IL-6和CRP水平升高与UC中瘤巨细胞透率的增加有关.
- 免疫抑制性SPP1+巨细胞的一个子集在高血IL-6的患者的TME中得到了丰富.
- 发现SPP1+巨细胞通过IL-6信号抑制T细胞活性,而CXCL9+巨细胞促进T细胞激活.
结论:
- 系统性炎症与UC TME中的局部免疫功能障碍有关,其特征是免疫抑制性巨细胞的增加.
- 一个由巨驱动的轴涉及IL-6信号传递,有助于在泌尿器膀癌中对ICB抵抗.
- 准SPP1+巨细胞是一个潜在的治疗策略,可以提高UC的免疫治疗结果.
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