用重组疫苗病毒向互白素-15通路的瘤治疗引起了协同反应
Yasmin Shakiba1,2, Pavel O Vorobyev1, Gaukhar M Yusubalieva1,3,4
1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia.
Molecular therapy oncolytics
|June 30, 2023
概括
在乳腺癌模型中,表达中白素-15 (IL-15) 或其受体 (IL-15Rα) 的重组性瘤性疫苗病毒显示出显著的瘤回归和生存益处. 组合疗法显示出强大的抗瘤治疗效果.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 在瘤学瘤学.
背景情况:
- 瘤病毒被设计成可以选择性地感染和杀死癌细胞.
- 介素-15 (IL-15) 是一种细胞因子,对免疫细胞的增殖和生存至关重要.
- 加强对瘤的免疫反应是癌症治疗的一个关键目标.
研究的目的:
- 开发和评估表达IL-15或IL-15受体α (IL-15Rα) 的复合性瘤性疫苗病毒 (LIVP菌株) 变体.
- 评估这些重组病毒单独和组合的疗效,对小鼠结肠和乳腺癌模型.
- 研究瘤回归和免疫细胞激活的潜在机制.
主要方法:
- 开发表达IL-15或IL-15Rα的复合LIVP菌株.
- 在实验室中对癌细胞系 (CT26和4T1) 病毒瘤解毒活性进行评估.
- 在体内评估治疗疗效在突发性小鼠CT26和4T1瘤模型.
- 瘤组织和宿主器官的组织学和免疫学分析.
主要成果:
- 添加LIVP-IL15和LIVP-IL15Rα促进了IL-15/IL-15Rα复合物的形成.
- 在实验室中,4T1乳腺癌细胞对复合病毒的敏感性更高.
- 与LIVP-IL15-RFP和LIVP-IL15Ra-RFP的联合治疗显著改善了4T1瘤携带小鼠的生存率和诱导瘤回归.
- 组合疗法导致淋巴细胞的透增加,包括激活的细胞毒性T细胞和巨细胞,在瘤内,而不会引起肝脏或脏毒性.
结论:
- 同时使用LIVP-IL15-RFP和LIVP-IL15Ra-RFP在乳腺癌模型中表现出优异的瘤治疗效果.
- 这种联合治疗方法代表了开发乳腺癌新型免疫疗法的有效策略.
- 这项研究强调了工程瘤病毒刺激抗瘤免疫力的潜力.
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