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Issue 17, 2014
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ZEB1 knockdown mediated using polypeptide cationic micelles inhibits metastasis and effects sensitization to a chemotherapeutic drug for cancer therapy

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Abstract

Metastasis and drug resistance are the main causes for the failure in clinical cancer therapy. Emerging evidence suggests an intricate role of epithelial-mesenchymal transition (EMT) and cancer stem cells (CSCs) in metastasis and drug resistance. The EMT-activator ZEB1 is crucial in malignant tumor progression by linking EMT-activation and stemness-maintenance. Here, we used multifunctional polypeptide micelle nanoparticles (NP) as nanocarriers for the delivery of ZEB1 siRNA and doxorubicin (DOX). The nanocarriers could effectively deliver siRNA to the cytoplasm and knockdown the target gene in H460 cells and H460 xenograft tumors, leading to reduced EMT and repressed CSC properties in vitro and in vivo. The complex micelle nanoparticles with ZEB1 siRNA (siRNA–NP) significantly reduced metastasis in the lung. When DOX and siRNA were co-delivered by the nanocarriers (siRNA–DOX–NP), a synergistic therapeutic effect was observed, resulting in dramatic inhibition of tumor growth in a H460 xenograft model. These results demonstrated that the siRNA–NP or siRNA–DOX–NP complex targeting ZEB1 could be developed into a new therapeutic approach for non-small cell lung cancer (NSCLC) treatment.

Graphical abstract: ZEB1 knockdown mediated using polypeptide cationic micelles inhibits metastasis and effects sensitization to a chemotherapeutic drug for cancer therapy

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Supplementary files

Article information


Submitted
24 Mar 2014
Accepted
18 Jun 2014
First published
19 Jun 2014

Nanoscale, 2014,6, 10084-10094
Article type
Paper
Author version available

ZEB1 knockdown mediated using polypeptide cationic micelles inhibits metastasis and effects sensitization to a chemotherapeutic drug for cancer therapy

S. Fang, L. Wu, M. Li, H. Yi, G. Gao, Z. Sheng, P. Gong, Y. Ma and L. Cai, Nanoscale, 2014, 6, 10084
DOI: 10.1039/C4NR01518E

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