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• W2907444722 abstract "The use of cell-penetrating peptides (CPPs) in combination with nanoparticles (NPs) shows great potential for intracellular delivery of DNA. Currently, its application is limited due to the potential toxicity and unknown long-term side effects. In this study NPs prepared using a biodegradable polymer, poly(lactic⁻co⁻glycolic acid (PLGA) in association with a CPP, was assessed on two lung epithelial cell lines (adenocarcinomic human alveolar basal epithelial cells (A549) and normal bronchial epithelial cells (Beas-2B cells)). Addition of CPP was essential for intracellular internalization. No effects were observed on the mitochondrial activity and membrane integrity. Cells exposed to the NPs⁻DNA⁻CPP showed low inflammatory response, low levels of apoptosis and no activation of caspase-3. Increase in necrotic cells (between 10%⁻15%) after 24 h of incubation and increase in autophagy, induced by NPs⁻DNA⁻CPP, are likely to be related to the lysosomal escape mechanism. Although oxidative stress is one of the main toxic mechanisms of NPs, NPs⁻DNA⁻CPP showed decreased reactive oxygen species (ROS) production on Beas-2B cells, with potential antioxidant effect of CPP and no effect on A549 cells. This NP system appears to be safe for intracellular delivery of plasmid DNA to the lung epithelial cells. Further investigations should be conducted in other lung-related systems to better understand its potential effects on the lungs." @default.
• W2907444722 created "2019-01-11" @default.
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• W2907444722 date "2019-01-03" @default.
• W2907444722 modified "2023-10-06" @default.
• W2907444722 title "Nanotoxicologic Effects of PLGA Nanoparticles Formulated with a Cell-Penetrating Peptide: Searching for a Safe pDNA Delivery System for the Lungs" @default.
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• W2907444722 doi "https://doi.org/10.3390/pharmaceutics11010012" @default.
• W2907444722 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6359528" @default.
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• W2907444722 hasPublicationYear "2019" @default.
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