淋巴结和与瘤相关的PD-L1巨通过抑制CD8T细胞来对抗树突细胞疫苗
Jenny Sprooten1, Isaure Vanmeerbeek1, Angeliki Datsi2
1Laboratory of Cell Stress & Immunity, Department of Cellular & Molecular Medicine, KU Leuven, Leuven, Belgium.
Cell reports. Medicine
|January 17, 2024
概括
树突细胞 (DC) 疫苗与PD-1阻断相结合,通过向免疫抑制性巨细胞,克服了T细胞枯竭的瘤. 这种组合疗法在治疗质母细胞瘤等具有挑战性的癌症方面表现有前途.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 癌症免疫疗法癌症免疫疗法
背景情况:
- 目前的免疫疗法对缺乏T细胞的瘤无效.
- 树突细胞 (DC) 疫苗旨在诱导I型干扰素 (IFN) 反应,但临床前模型显示T细胞缺乏瘤的有效性有限.
- 淋巴结中的DCs刺激了免疫抑制的编程死亡连接物1-阳性 (PD-L1+) 巨细胞 (LAMs),而不是T细胞.
研究的目的:
- 研究DC疫苗在T细胞透瘤中失败的机制.
- 确定增强DC疫苗对T细胞枯竭瘤的疗效的策略.
- 为了评估DC疫苗和PD-L1阻塞的联合治疗.
主要方法:
- 癌症患者数据的多omics集成,以预测DC疫苗反应.
- 在T细胞枯竭瘤的临床前小鼠模型.
- 使用DC疫苗和PD-L1阻塞的组合疗法.
- 对巨细胞群 (LAM和TAM) 和T细胞反应的分析.
主要成果:
- 临床前的DC疫苗会诱导PD-L1+ LAM和瘤相关巨细胞 (TAM),从而形成抑制免疫的,抑制CD8+ T细胞.
- 与PD-L1阻断和DC疫苗的联合治疗导致小鼠显著的瘤回归.
- 这种组合消耗PD-L1+巨细胞,减少骨髓炎炎症,并增强效应/干状记忆T细胞.
- 临床DC疫苗也增加了质母细胞瘤患者的PD-L1+TAMs,这表明类似的机制.
结论:
- 单独使用DC疫苗对T细胞枯竭的瘤是不够的,原因是巨细胞介导的抑制.
- 将DC疫苗与PD-L1阻断结合起来,是克服T细胞枯竭瘤的一个有希望的策略.
- 为了在T细胞透率低的癌症中进行有效的免疫疗法,需要采用多模式的方法.
关键词:
污水堆 (DAMP) 是一种污水堆.在ICB中,ICB是ICB.在 NF-κBB 中.在PD-1中使用PD-1.收费率为每年收费率 (TAAs) 的水平.灭症 (apoptosis) 是一种死亡的过程.与损伤相关的分子模式.免疫检查点阻断剂 免疫检查点阻断剂成熟的监管直流电流是什么意思mregDCDC 的时间尸体的死亡和死亡.核因子 κB 核因子 κB编程细胞死亡-1-1单细胞的奥米克.与瘤相关的抗原.更多相关视频
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