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Khargia iranica KH . T . 2 -Mediated Synthesis of Gold and Silver Nanoparticles: Optimization, Characterization, and Inhibitory Efficiency Against Malignant and Bacterial Cells

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Metallic nanoparticles (NPs) are effective in various biological processes. In particular, gold (Au) and silver (Ag) NPs have unique properties that make them ideal candidates for therapeutic applications. This study aimed to explore the potential of a new isolate, Khargia iranica KH . T . 2, for the extracellular synthesis of Au- and AgNPs and to evaluate their anticancer and antibacterial activities. The cyanobacteria were isolated and morphologically and genetically identified; their chemical constituents were detected using LC-QTOF-MS. K. iranica KH . T . 2 mediated the syntheses of Au and Ag NPs using two methods (cell-free media and cell biomass extracts). The syntheses were optimized by controlling various parameters, such as the concentration, temperature, illumination, and pH, to obtain small and stable LC Bio @AgNPs, LC Sup @AgNPs, LC Sup @AuNPs, and LC Bio @AuNPs. The NPs were physicochemically characterized, and their antibacterial and anticancer activities were studied. Au and Ag NPs were successfully synthesized by K. iranica KH . T . 2, suggesting that their peptides, amino acids, polysaccharides, and fatty acids were the main reagent-mediated synthesis. LC Bio @AgNPs, LC Sup @AgNPs, LC Sup @AuNPs, and LC Bio @AuNPs are small and negatively charged, enabling them to be used as antibacterial and anticancer agents. K. iranica KH . T . 2 represented a novel source for synthesizing Au and Ag NPs, and these NPs have been demonstrated to be effective therapeutic agents.

Source: ACS Omega

DOI: 10.1021/acsomega.3c10438

Authors: Reham Samir Hamida, Mohamed Abdelaal Ali, Maha Abdullah Momenah, Mariam Abdulaziz Alkhateeb, Haifa Essa Alfassam, Mashael Mohammed Bin-Meferij