型麻疹病毒,巨细胞和癌细胞之间的相互作用会诱导一种促炎性瘤微环境
Camille Chatelain1,2, Laurine Berland1,2, Marion Grard1,2
1Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, Nantes, France.
Oncoimmunology
|July 15, 2024
概括
麻疹病毒 (MV) 显示在恶性多层间皮瘤 (MPM) 中具有球性潜力. 巨细胞调节MV的MV.
科学领域:
- 在瘤学瘤学.
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 减弱麻疹病毒 (MV) 对恶性多层层层瘤 (MPM) 细胞具有瘤性活性,特别是那些缺少I型干扰素 (IFN-I) 途径的细胞.
- 瘤微环境 (TME) 中的骨髓状细胞具有功能性抗病毒反应,可以影响菌性病毒疗法的疗效.
研究的目的:
- 研究人类MPM中MV和髓状细胞 (单细胞和巨细胞) 之间的相互作用.
- 了解骨髓状细胞如何影响MPM中的MV瘤活性和瘤微环境.
主要方法:
- 与人类单细胞或巨细胞共同培养MPM细胞系,随后发生MV感染.
- 转录组分析,用于表型和分泌分析的高维流细胞计,以及从MV.测量转基因表达 (GFP).
- 评估IFN-I信号通路的调节由ruxolitinib.
主要成果:
- MPM细胞促进单细胞分化成类似M2的巨细胞.
- 这些巨细胞抑制了MPM细胞中的MV转基因表达,这些细胞具有缺陷的IFN-I生产但完整的信号传递,同时对对IFN-I不响应的细胞的影响较小.
- MV感染诱导巨细胞中的抗病毒和促炎基因表达,增强它们的细胞活性,并提高HLA和辅助刺激分子的调节.
- MV感染增加了炎症性细胞因子的分泌,包括IFN-I和PD-L1在瘤细胞和巨细胞中的表达.
结论:
- 骨髓衍生的巨细胞可以通过IFN-I生产来限制某些MPM亚型中的MV蛋白表达.
- MV和巨细胞之间的相互作用创造了一个促炎环境,可以增强MPM的抗瘤免疫反应.
- 准髓状细胞相互作用可能是优化基于MV的MPM的球性病毒疗法的策略.
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