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Della Valle M, D'Abrosca G, Gentile MT, Russo L, Isernia C, Di Gaetano S, Avolio R, Castaldo R, Cocca M, Gentile G, Malgieri G, Errico ME, Fattorusso R. Polystyrene nanoplastics affect the human ubiquitin structure and ubiquitination in cells: a high-resolution study. Chem Sci 2022; 13:13563-13573. [PMID: 36507175 PMCID: PMC9682910 DOI: 10.1039/d2sc04434j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 10/31/2022] [Indexed: 11/13/2022] Open
Abstract
Humans are estimated to consume several grams per week of nanoplastics (NPs) through exposure to a variety of contamination sources. Nonetheless, the effects of these polymeric particles on living systems are still mostly unknown. Here, by means of CD, NMR and TEM analyses, we describe at an atomic resolution the interaction of ubiquitin with polystyrene NPs (PS-NPs), showing how a hard protein corona is formed. Moreover, we report that in human HeLa cells exposure to PS-NPs leads to a sensible reduction of ubiquitination. Our study overall indicates that PS-NPs cause significant structural effects on ubiquitin, thereby influencing one of the key metabolic processes at the base of cell viability.
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Affiliation(s)
- M Della Valle
- Department of Environmental, Biological and Pharmaceutical Science and Technology, University of Campania - Luigi Vanvitelli Via Vivaldi 43 81100 Caserta Italy
| | - G D'Abrosca
- Department of Environmental, Biological and Pharmaceutical Science and Technology, University of Campania - Luigi Vanvitelli Via Vivaldi 43 81100 Caserta Italy
| | - M T Gentile
- Department of Environmental, Biological and Pharmaceutical Science and Technology, University of Campania - Luigi Vanvitelli Via Vivaldi 43 81100 Caserta Italy
| | - L Russo
- Department of Environmental, Biological and Pharmaceutical Science and Technology, University of Campania - Luigi Vanvitelli Via Vivaldi 43 81100 Caserta Italy
| | - C Isernia
- Department of Environmental, Biological and Pharmaceutical Science and Technology, University of Campania - Luigi Vanvitelli Via Vivaldi 43 81100 Caserta Italy
| | - S Di Gaetano
- Institute of Biostructures and Bioimaging-CNR Via Mezzocannone 16 80134 Naples Italy
| | - R Avolio
- Institute for Polymers, Composites and Biomaterials - CNR Via Campi Flegrei, 34, 80078 Pozzuoli Naples Italy
| | - R Castaldo
- Institute for Polymers, Composites and Biomaterials - CNR Via Campi Flegrei, 34, 80078 Pozzuoli Naples Italy
| | - M Cocca
- Institute for Polymers, Composites and Biomaterials - CNR Via Campi Flegrei, 34, 80078 Pozzuoli Naples Italy
| | - G Gentile
- Institute for Polymers, Composites and Biomaterials - CNR Via Campi Flegrei, 34, 80078 Pozzuoli Naples Italy
| | - G Malgieri
- Department of Environmental, Biological and Pharmaceutical Science and Technology, University of Campania - Luigi Vanvitelli Via Vivaldi 43 81100 Caserta Italy
| | - M E Errico
- Institute for Polymers, Composites and Biomaterials - CNR Via Campi Flegrei, 34, 80078 Pozzuoli Naples Italy
| | - R Fattorusso
- Department of Environmental, Biological and Pharmaceutical Science and Technology, University of Campania - Luigi Vanvitelli Via Vivaldi 43 81100 Caserta Italy
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