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Journal Article
Research Support, Non-U.S. Gov't
Foot-and-mouth disease virus-like particles as integrin-based drug delivery system achieve targeting anti-tumor efficacy.
The surface of foot-and-mouth disease virus (FMDV)-like particles (VLPs) contains a conserved arginine-glycine-aspartic acid (RGD) motif. Natural FMDV specifically attaches to overexpressed integrin receptors in several cancer cells. The FMDV VLPs produced in Escherichia coli were used for the first time as a delivery system of anti-tumor drug doxorubicin (DOX). The DOX-loaded VLPs exhibited a distinct release profile in different physiological conditions. The effects of FMDV-VLPs-DOX on cellular internalization and viability were evaluated in vitro by cell imaging, MTT assay and apoptosis, respectively. The anti-tumor efficacy in vivo was also determined in a nude mouse xenograft model based on tumor volume/weight and histological changes. The FMDV-VLPs-DOX complex significantly inhibited the proliferation of tumor and improved the pathological damage of DOX to non-targeting tissues. All results supported the potential of FMDV VLPs as a platform for specific targeted delivery of drugs or chemical reagents.
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