微RNA触发可编程DNA编码的PROTACs,用于细胞选择性和受控的蛋白质降解
Jiayin Zhan1,2, Xiang Li1, Zhe Feng1
1State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Chemistry and Biomedicine Innovation Center (ChemBIC), Nanjing University, Nanjing, 210023, China.
Angewandte Chemie (International ed. in English)
|October 9, 2024
概括
我们开发了一种新的miRNA启动组装前PROTAC (miRiaTAC) 平台,用于按需降解蛋白质. 这项技术提供了增强的瘤选择性和受控的癌症治疗,改进了现有的蛋白质溶解向化马.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 纳米技术纳米技术
背景情况:
- 针对蛋白质分解的嵌合体 (PROTACs) 具有治疗潜力,但在瘤选择性和受控的蛋白质降解方面面临挑战.
- 现有的PROTAC技术缺乏针对性治疗的按需激活和终止机制.
研究的目的:
- 开发一个由miRNA启动的组装前PROTAC (miRiaTAC) 平台,用于特定于细胞类型的按需蛋白质降解.
- 设计一个模块化系统,精确控制 PROTAC 活动,并实现多目标降解.
主要方法:
- 通过杂交连锁反应进行模块化组装的带有连接体 (JQ-1,利多米德) 的工程DNA发针.
- 集成的光标组用于光学控制和二次接体 (CDK6) 用于多个目标.
- 集成的近红外光介导光动力学疗法与上转化纳米系统.
主要成果:
- 在miRNA-21启动时证明了BRD4的选择性聚基化和降解,具有高瘤选择性和低系统毒性.
- 在PROTAC前组装/拆卸过程中实现了精确的光学控制,减轻了过度的蛋白质降解.
- 成功组装了双头miRiaTACs用于正交的多目标降解,并显示出强大的体内抗癌活性.
结论:
- 该 miRiaTAC 平台允许按需,特定于细胞类型的蛋白质降解,克服传统 PROTAC 的局限性.
- 这种动态DNA纳米技术方法增强了针对癌症治疗的PROTAC多功能性.
- miRiaTAC对开发具有更高效率和安全性的晚期癌症治疗有显著的前景.
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