刺激激活聚合物药物联合体用于癌症免疫疗法
bioRxiv : the preprint server for biology
|April 8, 2024
概括
我们开发了SAPCon,这是一个聚合物-药物联结平台,可以增强用于癌症免疫治疗的STING通路激活. 这种新的方法改善了药物输送,导致更好的抗瘤免疫力和治疗反应.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 聚合物化学 聚合物化学
背景情况:
- 干扰素基因刺激 (STING) 途径对于抗瘤免疫和癌症监测至关重要.
- 刺痛激动剂的临床应用受到药理障碍的限制,需要先进的药物输送系统.
- 开发有效的输送系统是提高癌症免疫治疗中STING激动剂疗效和安全性的关键.
研究的目的:
- 开发SAPCon,一个用于增强STING激活的聚合物-药物联合平台.
- 为了改善二度胺基-胺基胺醇 (diABZI) STING 激动剂的输送和疗效.
- 克服药理障碍并增强癌症免疫疗法.
主要方法:
- 合成的SAPCon使用应变促进的亚酸-基环添加,将diABZI前药物与水友性聚合物骨干结合在一起.
- 包含一个酶响应的链接剂 (cathepsin B-cleavable) 用于控制细胞内药物释放.
- 使用聚二甲基胺-协酸甲酸) 合聚合物,以增加循环时间和被动瘤积累.
主要成果:
- 静脉注射的SAPCon在瘤中积累,并由髓状细胞内细胞化,增加STING激活.
- 萨普康促进了免疫性瘤微环境,其巨细胞,树突细胞和CD8+ T细胞透率增加.
- 在乳腺癌模型中,SAPCon抑制了瘤生长,延长了生存时间,并增强了对抗PD-1阻塞的反应.
结论:
- SAPCon是一个模块化和可编程的平台,用于改善STING激动剂的系统性输送.
- 这个平台增强了用于癌症免疫治疗的STING激活和抗瘤免疫力.
- 在SAPCon上,我们发现了提高基于STING的癌症治疗疗法的疗效和安全性的巨大潜力.
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