alexa Extracellular entrapment and degradation of single-walled carbon nanotubes.
Materials Science

Materials Science

Journal of Nanomedicine & Nanotechnology

Author(s): Farrera C, Bhattacharya K, Lazzaretto B, Andn FT, Hultenby K,

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Abstract Neutrophils extrude neutrophil extracellular traps (NETs) consisting of a network of chromatin decorated with antimicrobial proteins to enable non-phagocytic killing of microorganisms. Here, utilizing a model of ex vivo activated human neutrophils, we present evidence of entrapment and degradation of carboxylated single-walled carbon nanotubes (SWCNTs) in NETs. The degradation of SWCNTs was catalyzed by myeloperoxidase (MPO) present in purified NETs and the reaction was facilitated by the addition of H2O2 and NaBr. These results show that SWCNTs can undergo acellular, MPO-mediated biodegradation and imply that the immune system may deploy similar strategies to rid the body of offending microorganisms and engineered nanomaterials. This article was published in Nanoscale and referenced in Journal of Nanomedicine & Nanotechnology

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