Resveratrol/Selenium Nanocomposite with Antioxidative and Antibacterial Properties

• Published in: Nanomaterials (Basel, Switzerland) Switzerland), 2024-02, Vol.14 (4), p.368
• Main Authors: Tomić, Nina, Stevanović, Magdalena M, Filipović, Nenad, Ganić, Tea, Nikolić, Biljana, Gajić, Ina, Ćulafić, Dragana Mitić
• Format: Article
• Language: English
• Subjects: Acids; Antibacterial activity; Antibacterial agents; antibiofilm; Antimicrobial agents; Antioxidants; antioxidative; Assaying; Bioavailability; Biocompatibility; Biofilms; Biomedical materials; Cancer; Composite materials; Cytotoxicity; E coli; Electron microscopes; Fourier transforms; Gene expression; Genotoxicity; Gentian violet; Homogenization; Hydrogen bonding; Hydrogen bonds; Light microscopy; Lipid peroxidation; Lipids; Medical equipment; Microscopy; Morphology; Nanocomposites; Nanomedicine; Nanoparticles; Nanotechnology; Optical microscopy; Oxidative stress; Peroxidation; Polyphenols; Potassium; Pseudomonas aeruginosa; Resveratrol; Scavenging; Selenium; selenium nanoparticles; Sodium; Structure; Testing; Tissue engineering
• ISSN: 2079-4991; 2079-4991
• DOI: 10.3390/nano14040368

In this work, we synthesized a new composite material comprised of previously formulated resveratrol nanobelt-like particles (ResNPs) and selenium nanoparticles (SeNPs), namely ResSeNPs. Characterization was provided by FESEM and optical microscopy, as well as by UV-Vis and FTIR spectroscopy, the last showing hydrogen bonds between ResNPs and SeNPs. DPPH, TBA, and FRAP assays showed excellent antioxidative abilities with ResNPs and SeNPs contributing mainly to lipid peroxidation inhibition and reducing/scavenging activity, respectively. The antibacterial effect against common medicinal implant colonizers pointed to notably higher activity against isolates (minimal inhibitory concentrations 0.75-1.5%) compared to tested gram-negative species ( and ). Antibiofilm activity against , , and determined in a crystal violet assay was promising (up to 69%), but monitoring of selected biofilm-related gene expression ( A and D) indicated the necessity of the involvement of a larger number of genes in the analysis in order to further establish the underlying mechanism. Although biocompatibility screening showed some cytotoxicity and genotoxicity in MTT and alkaline comet assays, respectively, it is important to note that active antioxidative and antibacterial/antibiofilm concentrations were non-cytotoxic and non-genotoxic in normal MRC-5 cells. These results encourage further composite improvements and investigation in order to adapt it for specific biomedical purposes.