1
|
Siernicka M, Winiarska M, Bajor M, Firczuk M, Muchowicz A, Bobrowicz M, Fauriat C, Golab J, Olive D, Zagozdzon R. Adenanthin, a new inhibitor of thiol-dependent antioxidant enzymes, impairs the effector functions of human natural killer cells. Immunology 2015; 146:173-83. [PMID: 26094816 DOI: 10.1111/imm.12494] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 06/05/2015] [Accepted: 06/08/2015] [Indexed: 12/25/2022] Open
Abstract
Natural killer (NK) cells are considered critical components of the innate and adaptive immune responses. Deficiencies in NK cell activity are common, such as those that occur in cancer patients, and they can be responsible for dysfunctional immune surveillance. Persistent oxidative stress is intrinsic to many malignant tumours, and numerous studies have focused on the effects of reactive oxygen species on the anti-tumour activity of NK cells. Indeed, investigations in animal models have suggested that one of the most important thiol-dependent antioxidant enzymes, peroxiredoxin 1 (PRDX1), is essential for NK cell function. In this work, our analysis of the transcriptomic expression pattern of antioxidant enzymes in human NK cells has identified PRDX1 as the most prominently induced transcript out of the 18 transcripts evaluated in activated NK cells. The change in PRDX1 expression was followed by increased expression of two other enzymes from the PRDX-related antioxidant chain: thioredoxin and thioredoxin reductase. To study the role of thiol-dependent antioxidants in more detail, we applied a novel compound, adenanthin, to induce an abrupt dysfunction of the PRDX-related antioxidant chain in NK cells. In human primary NK cells, we observed profound alterations in spontaneous and antibody-dependent NK cell cytotoxicity against cancer cells, impaired degranulation, and a decreased expression of activation markers under these conditions. Collectively, our study pinpoints the unique role for the antioxidant activity of the PRDX-related enzymatic chain in human NK cell functions. Further understanding this phenomenon will prospectively lead to fine-tuning of the novel NK-targeted therapeutic approaches to human disease.
Collapse
Affiliation(s)
- Marta Siernicka
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Magdalena Winiarska
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - Malgorzata Bajor
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - Malgorzata Firczuk
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - Angelika Muchowicz
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - Malgorzata Bobrowicz
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Cyril Fauriat
- IBiSA Cancer Immunomonitoring Platform, Institut Paoli Calmettes, Inserm, U1068, CRCM, Institut Paoli-Calmettes, CNRS, UMR7258, Aix-Marseille Université, Marseille, France
| | - Jakub Golab
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland
| | - Daniel Olive
- IBiSA Cancer Immunomonitoring Platform, Institut Paoli Calmettes, Inserm, U1068, CRCM, Institut Paoli-Calmettes, CNRS, UMR7258, Aix-Marseille Université, Marseille, France
| | - Radoslaw Zagozdzon
- Department of Immunology, Centre for Biostructure Research, Medical University of Warsaw, Warsaw, Poland.,Department of Bioinformatics, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| |
Collapse
|
2
|
Effects of reactive nitrogen scavengers on NK-cell-mediated killing of K562 cells. J Biomed Biotechnol 2012; 2012:101737. [PMID: 22505802 PMCID: PMC3312280 DOI: 10.1155/2012/101737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 12/27/2011] [Indexed: 11/25/2022] Open
Abstract
This study explored the effects of reactive nitrogen metabolites (RNMS) on natural-killer- (NK-) cell-mediated killing of K562 cells and the influence of RNM scavengers, such as tiopronin (TIP), glutamylcysteinylglycine (GSH), and histamine dihydrochloride (DHT), on reversing the suppressing effect of RNM. We administered exogenous and endogenous RNM in the NK + K562 culture system and then added RNM scavengers. The concentrations of RNM, TNF-β and IFN-γ, and NK-cell cytotoxicity (NCC) and the percentage of living NK cells were then examined. We found that both exogenous and endogenous RNM caused the KIR to decrease (P < 0.01); however, RNM scavengers such as TIP and GSH rescued this phenomenon dose dependently. In conclusion, our data suggests that RNM scavengers such as TIP and GSH enhance the antineoplasmic activity of NK cells.
Collapse
|