ArticleJournal of fluorescence2025
Preliminary Insights into the Fluorescence and Oxidative Characteristics of Flavin - DNA Systems on PVP - Coated Silver Nanoparticles.
Article in Journal of fluorescence, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Emissive features of flavins (Riboflavin/RF, Flavin MonoNucleotide/FMN and Flavin Adenine Dinucleotide/FAD) labeled native Deoxyribonucleic Acid (DNA) on Polyvinylpyrrolidone (PVP)-coated silver nanoparticles (SNPs), have been studied. The dual emission of flavins in DNA-PVP-coated SNPs systems is strongly influenced by the reaction time and temperature. Changes in the RF emissive features occur as a side effect when DNA is covalently linked hence, the RF destruction depends on DNA damage. Even if in an oxidation process, the FAD-DNA - PVP-coated SNPs system acts as a weak scavenger of reactive oxygen species, its antioxidant activity is approx. five times higher than that of RF-DNA-PVP-coated SNPs system. Destruction of RF by a riboflavin-mediated DNA photo-oxidation process that occurs on PVP-coated SNPs is suggested. Results have relevance in the redox process of riboflavin and provide valuable information for the further development of novel flavin-based SNPs systems as fluorescent antioxidant markers to solve several biological barriers in humans, such as protein-DNA interaction, cell binding.
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