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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 25, Number 7
BKCSDE 25(7)
July 20, 2004

Title	Characterization of Linear Polymer-Dendrimer Block Copolymer/Plasmid DNA Complexes: Formation of Core-shell Type Nanoparticles with DNA and Application to Gene Delivery in Vitro
Author	Joon Sig Choi, Young Hun Choi, Jong Sang Park*
Keywords	Dendrimer, Block copolymer, Polyplex, Cytotoxicity, Gene delivery
Abstract	A hybrid linear polymer-dendrimer block copolymer, poly(ethylene glycol)-block-poly(L-lysine) dendrimer, was synthesized and introduced to form polyionic complexes with DNA. The copolymer formed core-shell type nanoparticles with plasmid DNA. From dynamic light scattering experiments, the mean diameter of the polyplexes was observed to be 154.4 nm. The complex showed much increased water solubility compared to poly(L-lysine). The plasmid DNA in polyplexes was efficiently protected from the enzymatic digestion of DNase I. The cytotoxicity and transfection efficiency for 293 cells was measured in comparison with poly(Llysine).
Page	1025 - 1030
Full Text	PDF

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