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抗PD-1/PD-L1检查点抑制剂对THP-1单细胞粘附分子和细胞因子分泌的差异效应
Eva Probst1, Klaas F Franzen1, Christian Idel2
1Department of Medical Clinic III, University of Lübeck, Lübeck, Germany.
Anticancer research
|May 29, 2023
概括
针对PD-1/PD-L1的免疫检查点抑制剂对单细胞的影响不同. 抗PD-1药物减少了粘附分子,而这两种抑制剂类型都改变了细胞因子分泌,这表明它们对癌症免疫有不同的影响.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症治疗 癌症治疗
- 细胞生物学 细胞生物学
背景情况:
- 像抗PD-1/PD-L1这样的免疫检查点抑制剂 (ICI) 已经改变了癌症治疗.
- 这些疗法可以防止T细胞耗尽,增强抗瘤免疫力.
- ICI对人类单细胞的特定影响仍然在很大程度上未被探索.
研究的目的:
- 研究抗PD-1和抗PD-L1抑制剂对人类单细胞行为的差异影响.
- 为了分析粘附分子表达和细胞因子分泌的变化,以响应ICI.
主要方法:
- 使用人类单细胞白血病细胞系THP-1作为模型系统.
- 用抗PD-1 (Nivolumab,Pembrolizumab) 和抗PD-L1 (Atezolizumab,Durvalumab) 抑制剂对THP-1细胞进行治疗.
- 通过阵列和ELISA评估细胞因子分泌;使用流细胞计分析粘附分子.
主要成果:
- 检查点抑制剂治疗诱导了中度的亡.
- 抗PD-1抑制剂显著降低了粘附分子CD29,CD49d和CX3CR1.1的表达.
- 观察到改变的细胞因子配置,包括降低IGFBP2,CD147和CD31,增加IL-5和IFNγ.
结论:
- 抗PD-1/PD-L1抑制剂对单细胞产生差异性作用,受特定结合和抗体同型的影响.
- 对外围单细胞子集的进一步研究对于了解患者的长期结果至关重要.
- 这些发现突显了ICI超出T细胞效应的复杂免疫调节作用.
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