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Hyaluronate/lactoferrin layer-by-layer-coated lipid nanocarriers for targeted co-delivery of rapamycin and berberine to lung carcinoma.
Colloids and Surfaces. B, Biointerfaces 2018 September 2
The self-tumor targeting polymers, lactoferrin (LF) and hyaluronic acid (HA) were utilized to develop layer-by-layer (LbL) lipid nanoparticles (NPs) for dual delivery of berberine (BER) and rapamycin (RAP) to lung cancer. To control its release from the NPs, BER was hydrophobically ion paired with SLS prior to incorporation into NPs. Spherical HA/LF-LbL-RAP-BER/SLS-NPs 250.5 nm in diameter, with a surface charge of -18.5 mV were successfully elaborated. The NPs exhibited sequential release pattern with faster release of BER followed by controlled release of RAP which enables sensitization of lung tumor cells to the anti-cancer action of RAP. LbL coating of the NPs was found to enhance the drug cytotoxicity against A549 lung cancer cells as augmented by remarkable increase in their cellular internalization through CD44 receptors overexpressed by tumor cells. In vivo studies in lung cancer bearing mice have revealed the superior therapeutic activity of LbL-RAP-BER/SLS-NPs over the free drugs as demonstrated by 88.09% reduction in the average number of microscopic lung foci and 3.1-fold reduction of the angiogenic factor VEGF level compared to positive control. Overall, the developed HA/LF-LbL-coated lipid NPs could be potential carriers for targeted co-delivery of BER and RAP to lung cancer cells.
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