Targeted delivery of nano-PTX to the brain tumor-associated macrophages
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Lei Zou1, Youhua Tao1, Gregory Payne1, Linh Do1, Tima Thomas1, Juan Rodriguez1, Huanyu Dou1,2
1Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, Texas 79905, USA
2Graduate School of Biomedical Sciences, Texas Tech University Health Sciences Center El Paso, Texas 79905, USA
Huanyu Dou, email: email@example.com
Keywords: nanoparticles, brain targeted delivery, tumor associated macrophages, glioma
Received: October 07, 2015 Accepted: December 02, 2016 Published: December 25, 2016
Nanoparticles containing mixed lipid monolayer shell, biodegradable polymer core and rabies virus glycoprotein (RVG) peptide as brain targeting ligand, were developed for brain targeted delivery of paclitaxel (PTX) to treat malignant glioma. RVG conjugated PTX loaded NPs (RVG-PTX-NPs) had the desirable size (~140 nm), narrow size distribution and spherical shape. RVG-PTX-NPs showed poor uptake by neurons and selective targeting to the brain tumor associated macrophages (TAMs) with controlled release and tumor specific toxicity. In vivo studies revealed that RVG-PTX-NPs were significant to cross the blood-brain barrier (BBB) and had specific targeting to the brain. Most importantly, RVG-PTX-NPs showed effectiveness for anti-glioma therapy on human glioma of mice model. We concluded that RVG-PTX-NPs provided an effective approach for brain-TAMs targeted delivery for the treatment of glioma.
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