Factorial Design and Development of Solid Lipid Nanoparticles (SLN) for Gene Delivery
Several scientific hurdles still have to be overcome before gene therapy becomes a reality. One of them is the development of safe and efficient gene delivery system. Here, we have employed factorial design to optimize the production of solid lipid nanoparticles (SLN) for gene delivery. A 2×3 full-factorial experimental design was used for the optimization of SLNs formulations. The variables were defined by the components of the formulation: concentration of stearic acid, DOTAP, and Pluronic F68 at two levels (−1, 1) and 3 central points (0). Different SNL formulations were prepared by varying the amount of components and several properties were tested, including their capacity to accommodate DNA and protection against DNase degradation, colloidal stability, in vitro cytotoxicity, and transfection efficiency in prostate cancer cells. Finally, response Surface Methodology was used to select the most effective formulation for gene delivery to prostate cancer cells in vitro. In conclusion, this study revealed that stearic acid and Pluronic F68 were determinant to SLN size and stability, respectively, while small amounts of DOTAP are essential for a successful transfection.
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Document Type: Research Article
Publication date: February 1, 2015
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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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