Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 12, Issue 3, Pages 1812-1820Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2012.5190
Keywords
DNA Delivery; Immobilization TiO2 center dot Polylysine-DNA Nanocomposites
Categories
Funding
- SB RAS [61]
- RFBR [08-04-01045-a, 11-04-01408-a]
- Federal Target Program [02.512.12.2038, 2009-02-1.2-04-42-012]
- analytical departmental target program Development of Scientific Potential of Higher Education, [2.1.1/5642]
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The use of various nanoparticles is a promising way to solve the current problem of drug delivery in medicine and biology. Nanocomposites consisting of titanium dioxide and oligonucleotides noncovalently attached to nanoparticles through the polylysine linker (TiO2 center dot PL-DNA) have been designed to deliver of DNA fragments into cells. Three forms of TiO2 nanoparticles (amorphous, anatase, and brookite) were used for construction of nanocomposites. The size, morphology, and chemical composition of TiO2 nanoparticles and TiO2 center dot PL-DNA nanocomposites were characterized. DNA fragments in the proposed nanocomposites were shown to retain their ability to form complementary complexes. TiO2 center dot PL-DNA nanocomposites independently on the form of nanoparticles were shown by confocal microscopy to penetrate into HeLa cells without any transfection agents and physical impact. The presented type of nanocomposites can be applied in the thriving technology of drug delivery to achieve high therapeutic and biological efficacy.
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