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Highly Efficient Glioma Targeting of Tat Peptide-TTA1 Aptamer-Polyephylene Glycol-Modified Gelatin-Siloxane Nanoparticles.
Journal of Nanoscience and Nanotechnology 2018 April 2
Gliomas are the most common type of intracranial malignant tumor; however, current treatment approaches are often ineffective due to limited penetration of genes or drugs through the blood-brain barrier (BBB). Here we describe the synthesis of gelatin-siloxane nanoparticles (GS NPs) as candidate gene carriers through a two-step sol-gel process. To increase the efficiency of glioma targeting, human immunodeficiency virus-derived Tat, tumor-targeting aptamer (TTA)1, and polyethylene glycol (PEG) were conjugated to the GS NPs to generate Tat-TTA1-PEG-GS NPs. In vivo imaging revealed that these modified NPs not only evaded capture by the reticulo-endothelial system, but were able to cross the BBB to reach gliomas. Our results suggest that Tat-TTA1-PEG-GS NPs are a new type of non-viral vector that can deliver therapeutic DNA or drugs for highly efficient glioma treatment.
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