编程可注射的DNA水凝产生瘤微环境可激活和免疫指导存储器,用于增强化疗免疫疗法.
Yu Fan1, Mengsi Zhan2, Junhao Liang1
1Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 4, 2023
概括
这项研究引入了一种新的可注射DNA水凝,可以提供化疗和免疫刺激剂来对抗瘤. 智能水凝精确地释放药物来增强免疫系统.
科学领域:
- 生物材料科学 生物材料科学
- 免疫学 免疫学 免疫学
- 癌症治疗 癌症治疗
背景情况:
- 可以注射的水凝正在探索用于联合提供化疗和免疫调节剂以提高抗瘤免疫力.
- 传统的水凝在注射后的修改和生物功能整合方面面临着挑战,这限制了它们的有效性和安全性.
研究的目的:
- 开发一种可注射,对刺激有反应的免疫调节水凝库,用于增强癌症免疫疗法.
- 展示一个可编程的DNA水凝系统,整合化疗,现场疫苗接种和免疫检查点封锁.
主要方法:
- 设计了一种超软的DNA水凝系统,配有腺三酸盐体,用于刺激响应的药物释放.
- 与免疫细胞死亡并发的多克索鲁比和聚合的酸-酸-酸寡氧核酸 (CpG ODN) 用于树突细胞激活.
- 包含抗编程细胞死亡蛋白联体1 (aPDL1) 来阻止免疫检查点并增强T细胞反应.
主要成果:
- 该DNA水凝显示了对刺激有反应的构造变化,使联合封装的治疗药物的释放动力学有所不同.
- 聚合CpG ODN增强了瘤免疫性,同时最大限度地降低了与自由CpG相关的全身毒性 (脊髓巨变).
- 顺序释放多克索鲁比和aPDL1有效地使抗瘤T细胞免疫产生敏感性.
结论:
- 一个可编程的,超软的DNA水凝系统被成功开发为协同癌症治疗的概念验证.
- 这种水凝平台整合了化疗毒性,现场疫苗接种和免疫检查点封锁,以获得强大的抗瘤作用.
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