6533b7d7fe1ef96bd1268e70

RESEARCH PRODUCT

Gold Nanoparticles Supported on Nanoparticulate Ceria as a Powerful Agent against Intracellular Oxidative Stress

Hermenegildo GarcíaRoberto MartínJosé Raúl HeranceNadezda ApostolovaVictor M. VictorMercedes AlvaroCristina Menchón

subject

Time FactorsAntioxidantMaterials scienceBiocompatibilityCell SurvivalPolymersPeroxidase activitymedicine.medical_treatmentMetal NanoparticlesApoptosisBiocompatible MaterialsIntracellular oxidative stressmedicine.disease_causeAntioxidantsCatalysisCell LineBiomaterialsHeLachemistry.chemical_compoundCeriaQUIMICA ORGANICAmedicineHumansNanotechnologyGold nanoparticlesGeneral Materials ScienceCell Proliferationchemistry.chemical_classificationReactive oxygen speciesbiologyGeneral ChemistryGlutathionebiology.organism_classificationOxidative StressNanomedicinePeroxidasesBiochemistrychemistryColloidal goldNanoparticlesGoldReactive Oxygen SpeciesIntracellularOxidative stressHeLa CellsBiotechnology

description

Ceria-supported gold nanoparticles are prepared exhibiting peroxidase activity and acting as radical traps. Au/CeO2 shows a remarkable biocompatibility as demonstrated by measuring cellular viability, proliferation, and lack of apoptosis for two human cell lines (Hep3B and HeLa). The antioxidant activity of Au/CeO2 against reactive oxygen species (ROS) is demonstrated by studying the cellular behavior of Hep3B and HeLa in a model of cellular oxidative stress. It is determined that Au/CeO2 exhibits higher antioxidant activity than glutathione, the main cytosolic antioxidant compound, and its CeO2 carrier. Overall the result presented here shows the potential of implementing well-established nanoparticulated gold catalysts with remarkable biocompatibility in cellular biology.

yearjournalcountryeditionlanguage
2012-03-27Small
https://doi.org/10.1002/smll.201102255