Experimental and In Silico Studies to Unravel the Antioxidant and Antibacterial Properties of Lichen Metabolites from Pseudocyphellaria compar and Pseudocyphellaria nudata

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dc.catalogadorvzp
dc.contributor.authorCuellar, Mauricio A.
dc.contributor.authorMejia Forero, Jessica Carolina
dc.contributor.authorQuintero Pertuz, Helena
dc.contributor.authorCastro Álvarez, Alejandro
dc.contributor.authorMellado, Marco
dc.contributor.authorVera Quezada, Waleska
dc.contributor.authorMontenegro Rizzardini, Gloria
dc.contributor.authorEspinosa Bustos, Christian Marcelo
dc.contributor.authorBridi, Raquel
dc.contributor.authorSalas, Cristian O.
dc.date.accessioned2026-01-13T12:00:51Z
dc.date.available2026-01-13T12:00:51Z
dc.date.issued2026
dc.description.abstractLichens are a source of diverse compounds with a wide range of biological activities, making them of significant interest for novel drug development. In this study, metabolites were extracted from Lobariaceae lichens, and their antioxidant and antibacterial properties were experimentally investigated and explained using various computational approaches. Specifically, four lichen metabolites were analyzed using three methods to assess their antioxidant capacity. Antibacterial activity assays were conducted against four pathogens, and the minimum inhibitory concentrations (MICs) of the most promising compounds were determined. Ab initio studies were performed to evaluate radical stability. A pharmacological target responsible for the antibacterial effect was identified, and possible binding sites and modes were studied in silico. Metabolite IX, physciosporin, exhibited the highest antioxidant activity, which was associated with the theoretical stability of the radical. Additionally, IX exhibited an MIC of 0.97 μg/mL against S. pyogenes, surpassing the potency of streptomycin. The RecA protein was identified as a potential target, and a possible binding site and pattern of interactions at that site were described. Finally, IX showed low cytotoxicity in human cancer cell lines and was predicted to have favorable oral absorption properties, supporting its potential as a promising antioxidant and antibacterial agent against S. pyogenes.
dc.fechaingreso.objetodigital2026-01-13
dc.format.extent21 páginas
dc.fuente.origenORCID
dc.identifier.doi10.3390/antiox15010034
dc.identifier.urihttps://doi.org/10.3390/antiox15010034
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/107645
dc.information.autorucEscuela de Química; Salas Sanchez, Cristian Osvaldo; 0000-0001-7620-2459; 101425
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Mejia Forero, Jessica Carolina; S/I; 1193851
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Montenegro Rizzardini, Gloria; S/I; 98457
dc.information.autorucEscuela de Química; Espinosa Bustos, Christian Marcelo; 0000-0001-6038-8439; 142011
dc.issue.numero1
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaAntioxidants
dc.rightsacceso abierto
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectLichen metabolites
dc.subjectPseudocyphellaria
dc.subjectAntioxidants
dc.subjectIn silico
dc.subjectRecA protein
dc.subject.ddc610
dc.subject.ods03 Good health and well-being
dc.subject.odspa03 Salud y bienestar
dc.titleExperimental and In Silico Studies to Unravel the Antioxidant and Antibacterial Properties of Lichen Metabolites from Pseudocyphellaria compar and Pseudocyphellaria nudata
dc.typeartículo
dc.volumen15
sipa.codpersvinculados101425
sipa.codpersvinculados1193851
sipa.codpersvinculados98457
sipa.codpersvinculados142011
sipa.trazabilidadORCID;2026-01-05
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