A folate conjugated ternary copolymer, FA-PEG-PEI-PCL, of poly(ethylene glycol) (PEG), poly(ethylene imine) (PEI), and poly(ε-caprolactone) (PCL) was synthesized. The copolymer self-assembled into cationic micelles capable of co-delivering siRNA and the anticancer drug doxorubicin (DOX). This dual functional nanocarrier demonstrated low cytotoxicity and high performance in drug/siRNA delivery. Upon the codelivery of siRNA, targeting the Bcl-2 gene, and DOX, using the folate-targeted nanocarrier, DOX-induced apoptosis in the skov-3 cells overexpressing folate receptor was significantly enhanced through a mechanism of downregulating the antiapoptotic protein Bcl-2, while simultaneously upregulating the proapoptotic protein Bax. This work suggested that the combination of Bcl-2 siRNA and DOX therapies is feasible, based on our dual functional nanocarrier, which set up a good basis for a future in vivo test. © 2012 Zou et al, publisher and licensee Dove Medical Press Ltd.
CITATION STYLE
Zou, S., Cao, N., Cheng, D., Zheng, R., Wang, J., Zhu, K., & Shuai, X. (2012). Enhanced apoptosis of ovarian cancer cells via nanocarrier-mediated codelivery of siRNA and doxorubicin. International Journal of Nanomedicine, 7, 3823–3835. https://doi.org/10.2147/IJN.S29328
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