用于瘤特异性声动力学免疫治疗的聚合性STING亲激素剂
Jie Yu1, Shasha He1, Chi Zhang1
1School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore, Singapore.
Angewandte Chemie (International ed. in English)
|June 14, 2023
概括
本研究介绍了用于向癌症免疫治疗的聚合性STING前激剂 (PSPA). 通过超声波和瘤条件激活,PSPA增强了抗瘤反应,同时最大限度地减少了副作用.
科学领域:
- 生物医学工程 生物医学工程
- 癌症研究 癌症研究
- 免疫治疗是一种免疫疗法.
背景情况:
- 组合免疫疗法面临着瘤特异性和免疫相关不良事件 (irAEs) 的挑战.
- 有针对性的药物输送和受控的激活对于有效的癌症治疗至关重要.
- 瘤微环境 (TME) 呈现出独特的条件,可以用于治疗效益.
研究的目的:
- 开发一种新型的声免疫治疗剂,用于增强癌症治疗.
- 为了在TME中实现对药物释放和免疫激活的时空控制.
- 通过提高瘤特异性和减少非向效应,克服当前免疫疗法的局限性.
主要方法:
- 通过谷氨 (GSH) 可激活链接剂开发聚合物STING前激动剂 (PSPA) 集成声敏化剂和STING激动剂 (MSA-2).
- 使用声辐射激活PSPA以产生单片氧 (1O2) 并诱导免疫细胞死亡 (ICD).
- 在TME内有针对性的MSA-2释放,由高GSH水平促进,随后激活STING通路.
主要成果:
- 对PSPA的声波辐射产生了O,诱导恶性瘤细胞中的ICD.
- 在TME中由GSH触发的MSA-2释放将目标外的副作用降到最低.
- STING通路的激活提高了干扰素-β水平,与声动疗 (SDT) 协同增强抗瘤功效.
结论:
- PSPA为癌症的时空调节提供了一种通用方法,即声免疫治疗.
- 这种策略通过有针对性的ICD和STING激活来增强抗瘤免疫反应.
- 开发的系统显示了改善癌症治疗的潜力,并降低了毒性.
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