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Cationic dendrimers constitute a potential nonviral vector for gene therapy due to their ability of forming electrostatic complexes with DNA (dendriplexes). However, the supramolecular structure of dendriplexes and its impact on the cellular uptake and gene transfection remain largely unknown. Using synchrotron small angle X-ray scattering, here we show that DNA in complexes with poly(amidoamine)...
Chitosan (CS)/DNA complex nanoparticles (NPs) have been considered as a vector for gene delivery. Although advantageous for DNA packing and protection, CS-based complexes may lead to difficulties in DNA release once arriving at the site of action. In this study, an approach through modifying their internal structure by incorporating a negatively charged poly(γ-glutamic acid) (γ-PGA) in CS/DNA complexes...
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