Sequential responsive nano-PROTACs for precise intracellular delivery and enhanced degradation efficacy in colorectal cancer therapy

Autor: Liuqing Yang, Ye Yang, Jing Zhang, Minghui Li, Long Yang, Xing Wang, Meifang Chen, Hua Zhang, Bing He, Xueqing Wang, Wenbing Dai, Yiguang Wang, Qiang Zhang
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Signal Transduction and Targeted Therapy, Vol 9, Iss 1, Pp 1-13 (2024)
Druh dokumentu: article
ISSN: 2059-3635
DOI: 10.1038/s41392-024-01983-1
Popis: Abstract PROteolysis TArgeting Chimeras (PROTACs) have been considered the next blockbuster therapies. However, due to their inherent limitations, the efficacy of PROTACs is frequently impaired by limited tissue penetration and particularly insufficient cellular internalization into their action sites. Herein, based on the ultra-pH-sensitive and enzyme-sensitive nanotechnology, a type of polymer PROTAC conjugated and pH/cathepsin B sequential responsive nanoparticles (PSRNs) are deliberately designed, following the construction of the PROTAC for Cyclin-dependent kinase 4 and 6 (CDK4/6). Colorectal cancer (CRC) which hardly responds to many treatments even immune checkpoint blockades was selected as the tumor model in this study. As a result, PSRNs were found to maintain nanostructure (40 nm) in circulation and efficiently accumulated in tumors via enhanced permeation and retention effect. Then, they were dissociated into unimers (
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