瘤特异的针对蛋白质溶解的嵌合体和纳米颗粒的生物对等合成可以促进T细胞活动
Chunhong Wang1, Mengqi Chen1, Mingzhe Zhang1
1Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
Nature biomedical engineering
|November 27, 2025
概括
这项研究引入了一种新的瘤选择性结合策略,用于在现场组装癌症疗法. 这种方法精确地准癌细胞,提高治疗疗效,同时最大限度地减少全身毒性和副作用.
科学领域:
- 在瘤学瘤学.
- 化学生物学 化学生物学
- 免疫治疗是一种免疫疗法.
背景情况:
- 将癌症治疗向瘤部位而不会影响健康组织是一个重大挑战.
- 目前基于近距离的疗法在精确的体内组合和控制方面存在局限性.
研究的目的:
- 开发一种瘤选择性结合策略,以在现场组装基于近距离的癌症疗法.
- 为了在瘤部位准确地招募治疗分子和免疫细胞.
- 克服当前癌症治疗策略的局限性.
主要方法:
- 利用瘤丰富的氨基酸模仿剂来释放一个化学标签.
- 开发了标记组件之间的快速和选择性的键形成反应.
- 在小鼠模型中应用了针对蛋白质溶解的嵌合体和免疫治疗纳米粒子在现场合成的策略.
主要成果:
- 在有效度下实现了针对蛋白质分解的局部合成.
- 在现场证明免疫细胞参与纳米颗粒的形成,仅在治疗瘤中.
- 观察到T细胞激活的14.8倍增加和显著的瘤回归.
- 与不受控制的疗法相比,显示了最小的全身毒性和可以忽略的副作用.
结论:
- 瘤选择性绑定策略使得基于近距离的癌症疗法能够在体内精确组装.
- 这种方法提高了治疗效果,并降低了全身毒性.
- 可泛化方法为晚期癌症治疗提供了一个有前途的解决方案.
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