Poly-L-lysine-Modified Silica Nanoparticles: A Potential Oral Gene Delivery System

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Abstract:

Poly-L-lysine-modified silica nanoparticles (PMS-NP) is a novel nonviral vector for gene delivery, which can efficiently deliver plasmid DNA and antisense oligonucleotides into cultured cells in vitro in the presence of serum-free medium. However, little is known about whether PMS-NP is a suitable carrier for gene delivery by oral administration. To this end, oral gene delivery assays were performed, and glucose transporting tests showed that PMS-NP had no obvious toxicity to intestine of BALB/C mice. Efficient reporter gene expression was detected in stomach and intestine where expression was mainly observed in mucous membrane cells. These results indicated that PMS-NP was a low-toxicity carrier, hence demonstrating its potential for fundamental research and gene therapy, especially for oral gene therapy.
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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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