Synthesis of lipidic magnetic nanoparticles for nucleic acid delivery

Abstract

Lipidic magnetic nanoparticles are a rapid and reliable magnet-guided nucleic acid delivery system, which we have named as "LipoMag" ( Namiki et al., Nat. Nanotechnol 4:598-606, 2009). LipoMag is composed of a cationic lipid shell, an oleic acid binder, and an iron oxide nanocrystal core. Through the electrostatic force, positively charged LipoMag and negatively charged nucleic acid form complexes, termed "mag-lipoplex." Under a magnetic fi eld, LipoMag bearing nucleic acid can be controllably accumulated in target cells. Here we describe the procedure for the preparation of LipoMag which can be used for the transfection of nucleic acids, such as plasmid DNA and small interfering RNA. © Springer Science+Business Media, LLC 2013.