Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 14, Issue 4, Pages 2810-2815Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2014.8554
Keywords
siRNA; PLL-Fe2O3/SiO2 Nanoparticle; Gene Expression; Neuron; Delivery; Gene Silencing; Cytotoxicity
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Funding
- Natural Science Research Program of Jiangsu Province [BK2010334]
- Science and Technology Support Project of Zhenjiang [SH2012026]
- National Natural Science Foundation of China [51274106]
- Science and Technology Support Program of Jiangsu Province [BE2012143]
- Natural Science Research Program of Jiangsu Province Higher Education [12KJA430001]
- Jiangsu Provincial Postgraduate Cultivation and Innovation Project [CXZZ11_0557]
- Jiangsu University Students Research Projects [11A141]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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The cationic PLL-Fe2O3/SiO2-siRNA nanoparticles with an average crystallite size of about 20 nm were prepared and delivered into primary rat neurons for knockdown of gene expression. Primary rat fetal neurons were scratched to simulate the injury of central nervous system and then were transfected with PLL-Fe2O3/SiO2-siRNA nanoparticles. Optical microscopy, fluorescence microscopy, Western blotting, immunofluorescence, and MU assays were employed to test the cytotoxicity, the efficiency of encapsulation and targeted gene silencing. The results indicated that the PLL-Fe2O3/SiO2-siRNA nanoparticles have a remarkable efficiency of encapsulation and targeted gene silencing with negligible cytotoxicity. It could be concluded that the PLL-Fe2O3/SiO2 nanoparticles are a promising delivery carrier of siRNA.
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