向BCL9/BCL9L通过促进常规1型树突细胞 (cDC1) 激活和瘤透来增强抗原呈现
Fenglian He1, Zhongen Wu1, Chenglong Liu1
1Department of Pharmacology, Minhang Hospital, and Key Laboratory of Smart Drug Delivery, Shanghai Engineering Research Center of Immune Therapy, School of Pharmacy, Fudan University, Shanghai, 201203, China.
Signal transduction and targeted therapy
|May 29, 2024
概括
向B细胞淋巴瘤9和B细胞淋巴瘤9类 (BCL9/BCL9L) 增强了常规1型树突细胞 (cDC1) 的抗原呈现. 这促进了CD8+ T细胞的反应,并延迟了瘤的生长,提供了一种新的癌症免疫治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 细胞生物学 细胞生物学
背景情况:
- 传统的1型树突细胞 (cDC1) 对抗瘤免疫非常重要.
- B细胞淋巴瘤9和B细胞淋巴瘤9类 (BCL9/BCL9L) 涉及瘤生长和免疫反应调节.
- 瘤性BCL9/BCL9L在损害瘤抗原呈现中的确切作用尚不清楚.
研究的目的:
- 研究向BCL9/BCL9L对cDC1在瘤微环境中的抗原呈现的影响.
- 阐明BCL9/BCL9L影响cDC1功能和抗瘤免疫力的机制.
- 评估BCL9/BCL9L抑制在增强癌症免疫治疗中的治疗潜力.
主要方法:
- 使用hsBCL9z96.9 的方法药理上抑制BCL9/BCL9L.
- 使用Bcl9/Bcl9l淘汰赛小鼠模型.
- 使用单细胞转录组学分析.
- 研究XCL1-XCR1轴和NF-κB/IRF1信号通路.
主要成果:
- 向BCL9/BCL9L显著延迟了瘤生长,并促进了CD8+ T细胞的反应.
- 通过刺激cDC1激活和透,抑制BCL9/BCL9L增强了抗原呈现.
- XCL1-XCR1轴被确定为增加cDC1激活和瘤透的关键调解器.
- 与WTcDC1相比,Bcl9/Bcl9l缺乏的cDC1表现出优越的激活和抗原呈现能力,由NF-κB/IRF1信号介导.
结论:
- 向BCL9/BCL9L对于cDC1介导的瘤抗原的抗原呈现至关重要.
- 抑制BCL9/BCL9L可增强CD8+T细胞的激活和瘤透,为抗瘤免疫组织一个积极的反循环.
- 通过BCL9/BCL9L向调节cDC1功能,这是一种有前途的策略,可以克服免疫抑制并改善癌症免疫治疗结果.
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