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Molecular Mechanisms of Intracellular Delivery of Nanoparticles Monitored by an Enzyme‑Induced Proximity Labeling

Nano-Micro Letters 2024年第6期16卷 14-37页

作者： Junji Ren Zibin Zhang Shuo Geng Yuxi Cheng Huize Han Zhipu Fan Wenbing Dai Hua Zhang Xueqing Wang Qiang Zhang Bing He Department of Pharmaceutics School of Pharmaceutical Sciences Peking University38 Xueyuan RdHaidian DistrictBeijing 100191People’s Republic of China

Achieving increasingly finely targeted drug delivery to organs,tissues,cells,and even to intracellular biomacromolecules is one of the core goals of *** the delivery destination is refined to cellular and subcellular targets,it is essential to explore the delivery of nanomedicines at the molecular ***,due to the lack of technical methods,the molecular mechanism of the intracellular delivery of nanomedicines remains unclear to ***,we develop an enzyme-induced proximity labeling technology in nanoparticles(nano-EPL)for the real-time monitoring of proteins that interact with intracellular ***(lactic-co-glycolic acid)nanoparticles coupled with horseradish peroxidase(HRP)were fabricated as a model(HRP(+)-PNPs)to evaluate the molecular mechanism of nano delivery in *** adding the labeling probe biotin-phenol and the catalytic substrate H_(2)O_(2)at different time points in cellular delivery,nano-EPL technology was validated for the real-time in situ labeling of proteins interacting with ***-EPL achieves the dynamic molecular profiling of 740 proteins to map the intracellular delivery of HRP(+)-PNPs in macrophages over *** on dynamic clustering analysis of these proteins,we further discovered that different organelles,including endosomes,lysosomes,the endoplasmic reticulum,and the Golgi apparatus,are involved in delivery with distinct participation *** importantly,the engagement of these organelles differentially affects the drug delivery efficiency,reflecting the spatial–temporal heterogeneity of nano delivery in *** summary,these findings highlight a significant methodological advance toward understanding the molecular mechanisms involved in the intracellular delivery of nanomedicines.

关键词： Enzyme-induced proximity labeling Intracellular delivery Nano-protein interaction dynamic molecule profiling Macrophages

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