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• W2072891049 abstract "Abstract Background Lentiviral (LV) vectors are able to only slowly and inefficiently transduce nondividing cells such as those of the airway epithelium. To address this issue, we have exploited the magnetofection technique in in vitro models of airway epithelium. Methods Magnetofectins were formed by noncovalent interaction between LV particles and polycation‐coated iron oxide nanoparticles. Efficiency of LV‐mediated transduction (as evaluated through green fluorescent protein (GFP) expression by cytofluorimetric analysis) was measured in bronchial epithelial cells in the presence or absence of a magnetic field. Cytotoxicity was evaluated by lactate dehydrogenase (LDH) release; cell monolayer integrity by measurement of transepithelial resistance (TER) and evaluation of correct zonula occludens‐1 (ZO‐1) localization at tight junctions (TJs) by immunofluorescence and confocal microscopy. Results In nonpolarized cells, magnetofectins enhanced LV‐mediated transduction at multiplicity of infection (MOI) of 50 up to 3.9‐fold upon a 24‐h incubation, to levels that approached those achieved at MOI of 200 for LV alone, in the presence or absence of the magnetic field. Magnetofection significantly increased the percentage of transduced cells up to 186‐fold already after 15 min of incubation. In polarized cells, magnetofection increased GFP+ cells up to 24‐fold compared to LV alone. Magnetofection did not enhance LDH release and slightly altered TER but not ZO‐1 localization at the TJs. Conclusions We conclude that magnetofection can facilitate in vitro LV‐mediated transduction of airway epithelial cells, in the absence of overt cytotoxicity and maintaining epithelial integrity, by lowering the necessary vector dose and reducing the incubation time required to achieve efficient transduction. Copyright © 2010 John Wiley & Sons, Ltd." @default.
• W2072891049 created "2016-06-24" @default.
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• W2072891049 date "2010-09-01" @default.
• W2072891049 modified "2023-10-16" @default.
• W2072891049 title "Magnetically guided lentiviral‐mediated transduction of airway epithelial cells" @default.
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• W2072891049 doi "https://doi.org/10.1002/jgm.1494" @default.
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