巨细胞衍生的神经生长因子驱动膀癌中的ILC2前瘤功能
Maryline Falquet1,2,3,4,5, Hajar El Ahanidi1,2,3,4,5, Alejandra Gomez-Cadena1,2,3,4,5
1Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland.
Nature communications
|February 21, 2026
概括
神经生长因子 (NGF) 在膀癌中驱动2型先天性淋巴细胞 (ILC2s) 的前瘤功能. 阻断NGF受体TrkA可以提高生存率,并在临床前模型中增强免疫治疗反应.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
背景情况:
- 2型先天性淋巴细胞 (ILC2s) 调节组织平衡和炎症.
- 在癌症中,ILC2s可以通过调节免疫微环境来促进瘤生长.
- 激活益瘤ILC2功能的上游信号在很大程度上是未知的.
研究的目的:
- 在膀癌中识别ILC2前瘤功能的上游触发因素.
- 研究神经生长因子 (NGF) 在膀癌免疫力中的作用.
- 评估针对确定轴的治疗策略.
主要方法:
- 在人类膀癌组织中分析ILC2s和NGF.
- 在体外评估ILC2对NGF的反应.
- 在体内研究中,使用了对象性膀癌小鼠模型.
- 单独使用TrkA抑制剂和使用免疫检查点阻塞 (ICB) 的疗效评估.
主要成果:
- ILC2s表达NGF受体TrkA,并在NGF刺激时分泌2型细胞因子.
- 产生NGF的巨细胞在瘤微环境中激活ILC2s,促进调节性T细胞 (Tregs) 和瘤生长.
- 升高的NGF水平与患有富含ILC2的膀瘤的患者的生存率降低相关.
- 在体内抑制TrkA可以改善小鼠的存活率,并使瘤对ICB敏感.
结论:
- 在膀癌中,NGF是前瘤ILC2功能的关键激活剂.
- NGF/TrkA轴代表了增强抗瘤免疫力的潜在治疗标.
- 向TrkA+ ILC2s可能有利于患者,特别是那些对ICB有耐药性的患者.
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