炎症驱动的纳米徒通过减轻前列腺素E2介导的免疫抑制来增强术后免疫疗法
Yingke Liu1, Jiao He2, Man Li2
1State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan China.
ACS applied materials & interfaces
|February 1, 2024
概括
这项研究开发了一种新的纳米粒子药物递送系统,以向和抑制手术后黑色素瘤复发. 该疗法减少了免疫抑制细胞并增强了抗瘤免疫力,显示了术后黑色素瘤免疫疗法的前景.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 纳米技术纳米技术
- 生物材料是一种生物材料.
背景情况:
- 手术后的炎症会产生一种免疫抑制的瘤微环境,促进瘤复发.
- 循环氧化酶-2 (COX-2) /前列腺素E2 (PGE2) 途径对于塑造这种免疫抑制环境至关重要.
- 针对术后瘤微环境仍然是癌症治疗中的一个重大挑战.
研究的目的:
- 开发一种有针对性的免疫治疗策略,以抑制手术切除后黑色素瘤复发.
- 制手术后的炎症,缓解瘤微环境中的免疫抑制.
- 为了利用生物纳米粒子进行有效的药物输送和免疫调节.
主要方法:
- 开发出载有赛莱科克西布 (CXB) 的生物纳米粒子 (CP@CM),涂上激活的小鼠血管内皮细胞膜 (C166细胞).
- 利用C166细胞上的粘附分子来准炎症性白细胞 (WBCs).
- 在黑色素瘤模型中研究了CP@CM对COX-2/PGE2轴,免疫细胞透和瘤复发的影响,并使用PD-L1抗体进行组合治疗.
主要成果:
- CP@CM纳米颗粒通过粘附于白细胞,有效地准术后瘤部位.
- 切莱科克西布治疗通过抑制COX-2显著降低了PGE2分泌,并通过抑制COX-2抑制了免疫抑制细胞 (MDSC,Tregs).
- 观察到CD8+和CD4+T细胞的透增加,增强了抗瘤免疫反应.
- 与PD-L1抗体的联合治疗进一步增强了免疫反应,并抑制了瘤复发.
结论:
- 开发的CP@CM纳米粒子系统有效地针对术后黑色素瘤,并逆转免疫抑制瘤微环境.
- 这种策略通过调节COX-2/PGE2轴和增强抗瘤免疫力来抑制黑色素瘤的复发.
- 这些发现表明,CP@CM作为术后黑色素瘤治疗的免疫治疗剂具有有前途的潜力.
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