声动力疗法
肿瘤微环境
免疫疗法
癌症研究
活性氧
化学
材料科学
医学
免疫系统
免疫学
生物化学
肿瘤细胞
作者
Fengshuo Wang,Guoqiang Dong,Mengbin Ding,Ningyue Yu,Chunquan Sheng,Jingchao Li
出处
期刊:Small
[Wiley]
日期:2023-10-10
卷期号:20 (8)
被引量:7
标识
DOI:10.1002/smll.202306378
摘要
Abstract Proteolysis‐targeting chimeras (PROTACs) can provide promising opportunities for cancer treatment, while precise regulation of their activities remains challenging to achieve effective and safe therapeutic outcomes. A semiconducting polymer nanoPROTAC (SPN FeP ) is reported that can achieve ultrasound (US) and tumor microenvironment dual‐programmable PROTAC activity for deep‐tissue sonodynamic‐ferroptosis activatable immunotherapy. SPN FeP is formed through a nano‐precipitation of a sonodynamic semiconducting polymer, a ferroptosis inducer, and a newly synthesized PROTAC molecule. The semiconducting polymers work as sonosensitizers to produce singlet oxygen ( 1 O 2 ) via sonodynamic effect under US irradiation, and ferroptosis inducers react with intratumoral hydrogen peroxide (H 2 O 2 ) to generate hydroxyl radical (·OH). Such a dual‐programmable reactive oxygen species (ROS) generation not only triggers ferroptosis and immunogenic cell death (ICD), but also induces on‐demand activatable delivery of PROTAC molecules into tumor sites. The effectively activated nanoPROTACs degrade nicotinamide phosphoribosyl transferase (NAMPT) to suppress tumor infiltration of myeloid‐derived suppressive cells (MDSCs), thus promoting antitumor immunity. In such a way, SPN FeP mediates sonodynamic‐ferroptosis activatable immunotherapy for entirely inhibiting tumor growths in both subcutaneous and 2‐cm tissue‐covered deep tumor mouse models. This study presents a dual‐programmable activatable strategy based on PROTACs for effective and precise cancer combinational therapy.
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