Efficient gene delivery vectors by tuning the surface charge density of amino acid-functionalized gold nanoparticles.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 19206385.
- Also identified by DOI 10.1021/nn800507t and PMC identifier 2643365.
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Abstract
Gold colloids functionalized with amino acids provide a scaffold for effective DNA binding with subsequent condensation. Particles with lysine and lysine dendron functionality formed particularly compact complexes and provided highly efficient gene delivery without any observed cytotoxicity. Nanoparticles functionalized with first generation lysine dendrons (NP-LysG1) were approximately 28-fold superior to polylysine in reporter gene expression. These amino acid-based nanoparticles were responsive to intracellular glutathione levels, providing a tool for controlled release and concomitant expression of DNA.
Medical subject headings
- Amino Acids
- Gene Transfer Techniques
- Gold
- Metal Nanoparticles