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Arginine-Glycine-Aspartic Acid-Modified Lipid-Polymer Hybrid Nanoparticles for Docetaxel Delivery in Glioblastoma Multiforme

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Hybrid nanoparticles consisting of lipids and the biodegradable polymer, poly (D,L-lactide-co-glycolide) (PLGA), were developed for the targeted delivery of the anticancer drug, docetaxel. Transmission electron microscopic observations confirmed the presence of a lipid coating over the polymeric core. Using coumarin-6 as a fluorescent probe, the uptake efficacy of RGD conjugated lipid coated nanoparticles (RGD-L-P) by C6 cells was increased significantly, compared with that of lipid-polymer hybrid nanoparticles (L-P; 2.5-fold higher) or PLGA-nanoparticles (PLGA-P; 1.76-fold higher). The superior tumor spheroid penetration of RGD-L-P indicated that RGD-L-P could target effectively and specifically to C6 cells overexpressing integrin v3. The anti-proliferative activity of docetaxel-loaded RGD-L-P against C6 cells was increased 2.69- and 4.13-fold compared with L-P and PLGA-P, respectively. Regarding biodistribution, the strongest brain-localized fluorescence signals were detected in glioblastoma multiforme (GBM)-bearing rats treated with 1,10-Dioctadecy-l3,3,30,30-tetramethylindotricarb-ocyanine iodide (DiR)-loaded RGD-L-P, compared to rats treated with DiR-loaded L-P or PLGA-P. The median survival time of GBM-bearing rats treated with docetaxel-loaded RGD-L-P was 57 days, a fold increase of 1.43, 1.78, 3.35, and 3.56 compared with animals given L-P (P < 0.05), PLGA-P (P < 0.05), Taxotere (P < 0.01) and saline (P < 0.01), respectively. Collectively, these results support RGD-L-P as a promising drug delivery system for the specific targeting and the treatment of GBM.
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Document Type: Research Article

Publication date: March 1, 2015

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  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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