DNA encapsulated magnesium and manganous phosphate nanoparticles: potential non-viral vectors for gene delivery

被引：59

作者：

Bhakta, G ^{[1
]}

Mitra, S ^{[1
]}

Maitra, A ^{[1
]}

机构：

[1] Univ Delhi, Dept Chem, Delhi 110007, India

来源：

BIOMATERIALS | 2005年 / 26卷 / 14期

关键词：

magnesium phosphate; manganous phosphate; nanoparticles; non-viral vectors; gene delivery; transfection efficiency;

D O I：

10.1016/j.biomaterials.2004.06.039

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Nanoparticles of Mg and Mn (11) phosphates encapsulating pDNA were prepared. The sizes of these DNA loaded particles in aqueous dispersion were about 100-130nm diameter, and they aggregated with the progression of time. Although magnesium phosphate nanoparticles were crystalline, the manganous phosphate nanoparticles were found to be amorphous in nature. Nanoparticle dissolution and pDNA release were studied using atomic absorption spectroscopy and gel electrophoresis experiments. These inorganic phosphate nanoparticles dissolved in mild acidic pH (similar to5) releasing pDNA indicating that DNA release in the endosomal compartment is possible. In vitro transfection in HeLa cells demonstrated that while magnesium phosphate nanoparticles showed 100% efficiency, manganous phosphate nanoparticles exhibited about 85% transfection efficiency compared to that of 'polyfect', as control. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：2157 / 2163

页数：7

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