及时使用药物组合改善了免疫冷瘤的化疗免疫疗法
Fanfei Meng1, Yanying He2, Jiaqi Zhao2
1Department of Industrial and Molecular Pharmaceutics, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA; Department of Biomedical and Nutritional Sciences, University of Massachusetts Lowell, 3 Solomont Way, Lowell, MA 01854, USA.
概括
一种由聚乙烯胺衍生物 (2E'),帕克利塔塞尔 (PTX) 和循环二核酸 (CDN) 组成的新型免疫活性复合物显示出对化疗免疫治疗的前景. 将这种复合物与PD-L1 siRNA结合起来,可以增强对具有挑战性的瘤的免疫反应.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 材料科学 材料科学 材料科学
背景情况:
- 固体瘤往往逃避免疫检测,需要组合疗法.
- 化疗免疫疗法旨在将化疗的瘤杀伤作用与免疫系统激活相结合.
- 开发有针对性的输送系统对于有效的癌症治疗至关重要.
研究的目的:
- 开发和评估一种用于固体瘤化学免疫治疗的免疫活性复合物.
- 在不同的瘤模型中评估复合物的疗效,包括免疫冷瘤.
- 研究免疫调节效应并优化组合策略.
主要方法:
- 一种免疫活性复合物的配方,包括聚乙烯胺衍生物 (2E),帕克利塔克塞尔 (PTX) 和循环二核酸 (CDN).
- 在MOC1和KPCY瘤模型中注射2E'/PTX/CDN复合物的内注射.
- 对B16F10黑色素瘤的治疗疗效的评估,包括与2E'/siRNA向PD-L1 (siPD-L1) 的组合.
- 分析瘤排水淋巴结和脏中的免疫细胞群 (树突细胞,巨细胞,T细胞).
主要成果:
- 单次注射2E'/PTX/CDN在80-100%的MOC1和KPCY瘤中实现了完全的回归.
- 在免疫冷 B16F10 黑色素瘤中观察到有限的疗效.
- 2E'/PTX/CDN和2E'/siPD-L1的定时组合导致B16F10黑色素瘤中50%的无瘤存活率.
- 组合疗法调节免疫细胞,增加成熟的树突细胞和M1巨细胞,同时减少调节性T细胞和增加抗原特异性CD8+T细胞.
结论:
- 2E'/PTX/CDN复合体是某些固体瘤的有效化学免疫治疗剂.
- 定时的组合疗法,包括PD-L1阻断,对于克服免疫冷瘤微环境至关重要.
- 这种策略有可能通过维持免疫活性表型来治疗更广泛的固体瘤.
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