同时激活STING和淋巴毒素β受体诱导B细胞响应在三级淋巴体结构中以增强抗瘤免疫力
Junko Sawada1, Yasuhiro Kikuchi1, Maxwell Duah1
1Cancer and Blood Disorders Institute, Institute for Fundamental Biomedical Research, and Department of Surgery, Johns Hopkins All Children's Hospital, and Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, St. Petersburg, FL, USA.
Nature immunology
|September 2, 2025
概括
同时激活STING和淋巴毒素-β受体 (LTβR) 途径会产生三级淋巴体结构 (TLS),增强抗瘤免疫力并改善长期存活. 单独激活STING并没有产生这些治疗效益.
科学领域:
- 免疫学
- 癌症生物学
- 癌症学
背景情况:
- 富含B细胞的三级淋巴体结构 (TLS) 与更好的癌症预后和免疫治疗反应相关.
- 在免疫反应中,先天性免疫通路如STING和淋巴毒素-β受体 (LTβR) 信号传递至关重要.
研究的目的:
- 研究STING和LTβR激活对抗瘤免疫和TLS形成的联合作用.
- 评估在临床前癌症模型中协同激活STING和LTβR的治疗潜力.
主要方法:
- 在小鼠癌症模型中使用激动剂同时激活STING和LTβR通路.
- 评估了瘤抑制,TLS发展,免疫细胞透 (CD8+,CD4+T细胞,B细胞) 和长期存活.
- 分析了B细胞成熟,血细胞生成和T辅助细胞平衡 (TH2/TH17).
主要成果:
- 结合STING和LTβR激活促进了CD8+T细胞依赖性瘤抑制,并诱导了具有生殖中心类似B细胞反应的功能性TLS.
- 这种双重激活导致针对瘤复发的有效免疫和新辅助环境中的长期存活.
- 单独激活STING不足以诱导TLS或长期治疗效果,而与LTβR结合则增强TLS,B细胞成熟,T细胞反应和幽默/细胞免疫.
结论:
- 同时激活STING和LTβR通路是产生功能性TLS和强大的抗瘤免疫力的有希望的策略.
- 这种方法增强B细胞成熟,T细胞反应,并将免疫平衡转向有效的瘤控制.
- 针对STING和淋巴毒素途径为癌症治疗提供了新的治疗途径.
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