IL-27 引起细胞毒性 CD8+ T 细胞程序以强制控制瘤
Béatrice Bréart1, Katherine Williams1, Stellanie Krimm1
1Genentech, South San Francisco, CA, USA.
Nature
|February 5, 2025
概括
通过增强细胞毒性CD8+T淋巴细胞 (CTLs) 来增强抗瘤免疫力. 治疗IL-27是安全有效的,改善了癌症免疫治疗的反应,包括PD- L1阻断.
科学领域:
- 免疫学
- 癌症生物学
- 分子医学
背景情况:
- 细胞毒性CD8+T淋巴细胞 (CTLs) 对于抗瘤免疫至关重要,但在瘤中经常变得功能障碍.
- 增强CTL活性的细胞因子对癌症免疫治疗具有前景,但控制炎症毒性是一个临床障碍.
研究的目的:
- 为了研究Interleukin-27 (IL-27) 在抗瘤免疫力及其在癌症免疫治疗中的治疗潜力.
主要方法:
- 人类和小鼠瘤中IL-27表达与CTL特征的相关分析.
- 在小鼠癌症模型中使用可诱导的IL-27过度表达和IL-27蛋白质的实验.
- 对抗PD-1/ PD- L1治疗的患者对IL-27对人体CTL功能的评估和与临床反应的相关性.
主要成果:
- 在瘤中,IL-27表达与CTL特征密切相关.
- 在小鼠中,IL-27直接增强瘤微环境中的CTL持久性和效应器功能.
- 治疗IL-27的耐受性很好,诱导瘤回归,改善了CTL细胞毒性程序,并与PD- L1阻断产生协同作用.
- 在癌症患者中,高IL-27表达与抗PD-1/ PD- L1治疗的良好反应相关.
结论:
- 内源IL-27对于有效的抗瘤免疫力至关重要.
- 单独或与PD- L1阻断相结合,IL-27受体激动提供了一种安全有效的策略来增强抗瘤T细胞反应.
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