Gold Nanoparticle-Mediated Transfection of Mammalian Cells

Mixed monolayer protected gold clusters (MMPCs) functionalized with quaternary ammonium chains efficiently transfect mammalian cell cultures, as determined through β-galactosidase transfer and activity. The success of these transfection assemblies depended on several variables, including the ratio o...

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Bibliographic Details
Published in:Bioconjugate chemistry 2002-01, Vol.13 (1), p.3-6
Main Authors: Sandhu, Kulmeet K, McIntosh, Catherine M, Simard, Joseph M, Smith, Sallie W, Rotello, Vincent M
Format: Article
Language:English
Subjects:
beta-Galactosidase - genetics
Cell Line
DNA - genetics
Electrophoresis, Polyacrylamide Gel
Gold
Indicators and Reagents
Microspheres
Nanotechnology
Particle Size
Plasmids
Transfection - methods
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Summary:Mixed monolayer protected gold clusters (MMPCs) functionalized with quaternary ammonium chains efficiently transfect mammalian cell cultures, as determined through β-galactosidase transfer and activity. The success of these transfection assemblies depended on several variables, including the ratio of DNA to nanoparticle during the incubation period, the number of charged substituents in the monolayer core, and the hydrophobic packing surrounding these amines. Complexes of MMPCs and plasmid DNA formed at w/w ratios of 30 were most effective in promoting transfection of 293T cells in the presence of 10% serum and 100 μM chloroquine. The most efficient nanoparticle studied (MMPC 7) was ∼8-fold more effective than 60 kDa polyethylenimine, a widely used transfection agent.
ISSN:1043-1802
1520-4812
DOI:10.1021/bc015545c