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Probiotic Lactobacillus salivarius mediated synthesis of silver nanoparticles (AgNPs-LS): A sustainable approach and multifaceted biomedical application.
- Source :
-
Heliyon [Heliyon] 2024 Sep 17; Vol. 10 (18), pp. e37987. Date of Electronic Publication: 2024 Sep 17 (Print Publication: 2024). - Publication Year :
- 2024
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Abstract
- Biogenic synthesis of silver nanoparticles (AgNPs) has emerged as an eco-friendly and sustainable approach with diverse biological applications. This study presents synthesis of AgNPs-LS using a probiotic strain Lactobacillus salivarius ( L. salivarius ) and explores their multifaceted biological activities, including antibacterial, antibiofilm, anti-quorum sensing, antifungal, antioxidant, anticancer, anticoagulant and thrombolytic properties. The biosynthesis of AgNPs-LS was successfully achieved using L. salivarius cell free supernatants, resulting in well-characterized nanoparticles as confirmed by UV-Vis spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, transmission electron microscopy (TEM) and dynamic light scattering (DLS) and zeta potential analysis. The AgNPs-LS demonstrated potent antibacterial activity against different pathogenic bacteria ( C. violaceum, P. aeruginosa, S. aureus , E. coli and S. marcescens ), emphasizing their potential in combating bacterial infections. Moreover, these AgNPs-LS were effective in inhibiting biofilm formation (>60 % at 1/2 MIC), a key mechanism of bacterial virulence, highlighting their utility in preventing biofilm-related infections. AgNPs-LS exhibited anti-quorum sensing activity, disrupting bacterial communication systems and potentially reducing virulence factor such as, violacein production in C. violaceum, pyocyanin production in P. aeruginosa and prodigiosin production in S. marcescens . Additionally, AgNPs-LS also exhibited notable antifungal activity towards a different pathogenic fungus ( F. proliferatum, P. purpurogenum, A. niger and R. stolonifer ). In terms of health applications, the AgNPs-LS displayed significant antioxidant activity, effectively scavenging DPPH <superscript>•</superscript> (IC <subscript>50</subscript>  = 42.65 μg/mL) and ABTS <superscript>•+</superscript> (IC <subscript>50</subscript>  = 53.77 μg/mL) free radicals. Furthermore, AgNPs-LS showed cytotoxicity against breast cancer cells (MCF-7) (IC <subscript>50</subscript>  = 52.29 μg/mL), positioning them as promising candidates for cancer therapy. Moreover, AgNPs-LS were also shown promising anticoagulant and thrombolytic activities under practical conditions. Therefore, the biogenic synthesis of AgNPs-LS using L. salivarius offers a sustainable and cost-effective route for producing AgNPs with an array of biological activities. These AgNPs-LS have the potential to address various challenges in healthcare, ranging from antimicrobial, anticancer applications to biofilm inhibition, antioxidant therapy, anticoagulant and thrombolytic agents.<br />Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (© 2024 The Authors. Published by Elsevier Ltd.)
Details
- Language :
- English
- ISSN :
- 2405-8440
- Volume :
- 10
- Issue :
- 18
- Database :
- MEDLINE
- Journal :
- Heliyon
- Publication Type :
- Academic Journal
- Accession number :
- 39347420
- Full Text :
- https://doi.org/10.1016/j.heliyon.2024.e37987