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Nanocomposites Consisting of Titanium Dioxide Nanoparticles and Oligonucleotides

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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·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·PL-DNA nanocomposites were characterized. DNA fragments in the proposed nanocomposites were shown to retain their ability to form complementary complexes. TiO2·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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Document Type: Research Article

Publication date: March 1, 2012

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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