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AIMS: The aim of this study was to obtain adriamycin-loaded polymer-lipid hybrid nanoparticles conjugated with anti-EGF receptor antibody (PLNP-Mal-EGFR) for hepatocellular carcinoma (HCC) chemotherapy. MATERIALS & METHODS: The nanoparticles were characterized by dynamic light scattering and fluorescence spectroscopy. The in vitro and in vivo distribution and anti-tumor activity of the nanoparticles were evaluated. RESULTS & CONCLUSION: PLNP-Mal-EGFR showed significantly enhanced cellular cytotoxicity against HCC cells overexpressing EGFR compared with nontargeted nanoparticles (polymer-lipid hybrid nanoparticles containing DSPE-PEG-Mal and polymer-lipid hybrid nanoparticles containing DSPE-mPEG combined with anti-EGFR Fab´). PLNP-Mal-EGFR and nontargeted nanoparticles could significantly reduce the proportion of side-population cells in HCC cells. The in vivo accumulation of PLNP-Mal-EGFR was obviously higher than that of nontargeted nanoparticles in SMMC-7721 HCC cells overexpressing EGFR. Notably, PLNP-Mal-EGFR showed significantly enhanced anti-tumor activity against HCC in vivo compared with nontargeted nanoparticles and free adriamycin. Therefore, PLNP-Mal-EGFR may serve as an effective therapeutic approach for HCC chemotherapy.
Gao et al. (Fri,) studied this question.
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