Alginate modified nanostructured calcium carbonate with enhanced delivery efficiency for gene and drug delivery.

Abstract:

:To improve the performance of nanostructured calcium carbonate in gene delivery, a hydrophilic polysaccharide, alginate, was added to calcium carbonate co-precipitation systems to form alginate/CaCO(3)/DNA nanoparticles. The size and ζ-potential of the nanoparticles were measured by a zetasizer. Due to the existence of alginate chains which retarded the growth of calcium carbonate based co-precipitates, the alginate/CaCO(3)/DNA nanoparticles exhibited a decreased size and enhanced stability in the aqueous solution. To evaluate the gene and drug co-delivery ability, doxorubicin hydrochloride (DOX), a water-soluble anticancer drug, was loaded in the nanoparticles to form alginate/CaCO(3)/DNA/DOX nanoparticles. The in vitro gene transfections mediated by different nanoparticles in 293 T cells and HeLa cells were carried out, using pGL3-Luc as a reporter plasmid. With an appropriate amount of alginate, the gene transfection efficiency of alginate modified nanoparticles could be significantly enhanced as compared with the nanoparticles without alginate modification for the gene delivery systems, as well as the gene and drug co-delivery systems. The study on in vitro cell inhibition effects showed that the cell viability decreased with increasing DOX amount loaded in alginate/CaCO(3)/DNA/DOX nanoparticles. The alginate modification is a useful strategy to improve the calcium carbonate co-precipitation technique for the preparation of gene and drug delivery systems, and the nanoparticles prepared in this study have promising applications in gene and drug delivery.

journal_name

Mol Biosyst

journal_title

Molecular bioSystems

authors

Zhao D,Zhuo RX,Cheng SX

doi

10.1039/c1mb05337j

subject

Has Abstract

pub_date

2012-03-01 00:00:00

pages

753-9

issue

3

eissn

1742-206X

issn

1742-2051

journal_volume

8

pub_type

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