Lipidoid-coated iron oxide nanoparticles for efficient DNA and siRNA delivery.

Lipidoid-coated iron oxide nanoparticles for efficient DNA and siRNA delivery.
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DOI:
10.1021/nl304287a
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发表时间:
2013-03-13
期刊:
影响因子:
10.8
通讯作者:
Anderson DG
Anderson DG
中科院分区:
材料科学1区
文献类型:
--
作者:
Jiang S;Eltoukhy AA;Love KT;Langer R;Anderson DG

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The safe, targeted and effective delivery of gene therapeutics remains a significant barrier to their broad clinical application. Here we develop a magnetic nucleic acid delivery system composed of iron oxide nanoparticles and cationic lipid-like materials termed lipidoids. Coated nanoparticles are capable of delivering DNA and siRNA to cells in culture. The mean hydrodynamic size of these nanoparticles was systematically varied and optimized for delivery. While nanoparticles of different sizes showed similar siRNA delivery efficiency, nanoparticles of 50–100 nm displayed optimal DNA delivery activity. The application of an external magnetic field significantly enhanced the efficiency of nucleic acid delivery, with performance exceeding that of the commercially available lipid-based reagent, Lipofectamine 2000. The iron oxide nanoparticle delivery platform developed here offers the potential for magnetically guided targeting, as well as an opportunity to combine gene therapy with MRI imaging and magnetic hyperthermia.
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