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Mahan B, Chung RS, Pountney DL, Moynier F, Turner S. Isotope metallomics approaches for medical research. Cell Mol Life Sci 2020; 77:3293-3309. [PMID: 32130428 PMCID: PMC11104924 DOI: 10.1007/s00018-020-03484-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/20/2020] [Accepted: 02/17/2020] [Indexed: 12/16/2022]
Abstract
Metallomics is a rapidly evolving field of bio-metal research that integrates techniques and perspectives from other "-omics" sciences (e.g. genomics, proteomics) and from research vocations further afield. Perhaps the most esoteric of this latter category has been the recent coupling of biomedicine with element and isotope geochemistry, commonly referred to as isotope metallomics. Over the course of less than two decades, isotope metallomics has produced numerous benchmark studies highlighting the use of stable metal isotope distribution in developing disease diagnostics-e.g. cancer, neurodegeneration, osteoporosis-as well as their utility in deciphering the underlying mechanisms of such diseases. These pioneering works indicate an enormous wealth of potential and provide a call to action for researchers to combine and leverage expertise and resources to create a clear and meaningful path forward. Doing so with efficacy and impact will require not only building on existing research, but also broadening collaborative networks, bolstering and deepening cross-disciplinary channels, and establishing unified and realizable objectives. The aim of this review is to briefly summarize the field and its underpinnings, provide a directory of the state of the art, outline the most encouraging paths forward, including their limitations, outlook and speculative upcoming breakthroughs, and finally to offer a vision of how to cultivate isotope metallomics for an impactful future.
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Affiliation(s)
- Brandon Mahan
- Earth and Environmental Sciences, James Cook University, Townsville, QLD, Australia.
- Department of Biomedical Research, Macquarie University, Sydney, NSW, 2109, Australia.
| | - Roger S Chung
- Department of Biomedical Research, Macquarie University, Sydney, NSW, 2109, Australia
| | - Dean L Pountney
- School of Medical Science, Griffith University, Southport, 4222, Australia
| | - Frédéric Moynier
- Université de Paris, Institut de Physique du Globe de Paris, CNRS, 75238, Paris, France
| | - Simon Turner
- Thermo Fisher Isotope Development Hub, Department of Earth and Environmental Sciences, Macquarie University, Sydney, NSW, 2109, Australia
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Vidaud C, Robert M, Paredes E, Ortega R, Avazeri E, Jing L, Guigonis JM, Bresson C, Malard V. Deciphering the uranium target proteins in human dopaminergic SH-SY5Y cells. Arch Toxicol 2019; 93:2141-2154. [DOI: 10.1007/s00204-019-02497-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 06/17/2019] [Indexed: 12/11/2022]
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Paredes E, Malard V, Vidaud C, Avazeri E, Ortega R, Nonell A, Isnard H, Chartier F, Bresson C. Isotopic variations of copper at the protein fraction level in neuronal human cells exposed in vitro to uranium. Analyst 2019; 144:5928-5933. [DOI: 10.1039/c9an01081e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Accurate isotope ratio determination was downscaled to the level of metal-containing protein fractions obtained from cell line lysates.
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Affiliation(s)
- Eduardo Paredes
- Den – Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS)
- CEA
- Université Paris-Saclay
- Gif sur Yvette
- France
| | - Véronique Malard
- CEA
- DRF
- Biosciences and biotechnologies institute (BIAM)
- Bagnols-sur-Cèze
- France
| | - Claude Vidaud
- CEA
- DRF
- Biosciences and biotechnologies institute (BIAM)
- Bagnols-sur-Cèze
- France
| | - Emilie Avazeri
- CEA
- DRF
- Biosciences and biotechnologies institute (BIAM)
- Bagnols-sur-Cèze
- France
| | - Richard Ortega
- University of Bordeaux
- CENBG
- UMR 5797
- F-33170 Gradignan
- France
| | - Anthony Nonell
- Den – Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS)
- CEA
- Université Paris-Saclay
- Gif sur Yvette
- France
| | - Hélène Isnard
- Den – Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS)
- CEA
- Université Paris-Saclay
- Gif sur Yvette
- France
| | - Frédéric Chartier
- Den – Département de Physico-Chimie (DPC)
- CEA
- Université Paris-Saclay
- Gif sur Yvette
- France
| | - Carole Bresson
- Den – Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS)
- CEA
- Université Paris-Saclay
- Gif sur Yvette
- France
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Paredes E, Avazeri E, Malard V, Vidaud C, Reiller PE, Ortega R, Nonell A, Isnard H, Chartier F, Bresson C. Impact of uranium uptake on isotopic fractionation and endogenous element homeostasis in human neuron-like cells. Sci Rep 2018; 8:17163. [PMID: 30464301 PMCID: PMC6249223 DOI: 10.1038/s41598-018-35413-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 11/05/2018] [Indexed: 12/15/2022] Open
Abstract
The impact of natural uranium (U) on differentiated human neuron-like cells exposed to 1, 10, 125, and 250 µM of U for seven days was assessed. In particular, the effect of the U uptake on the homeostatic modulation of several endogenous elements (Mg, P, Mn, Fe, Zn, and Cu), the U isotopic fractionation upon its incorporation by the cells and the evolution of the intracellular Cu and Zn isotopic signatures were studied. The intracellular accumulation of U was accompanied by a preferential uptake of 235U for cells exposed to 1 and 10 µM of U, whereas no significant isotopic fractionation was observed between the extra- and the intracellular media for higher exposure U concentrations. The U uptake was also found to modulate the homeostasis of Cu, Fe, and Mn for cells exposed to 125 and 250 µM of U, but the intracellular Cu isotopic signature was not modified. The intracellular Zn isotopic signature was not modified either. The activation of the non-specific U uptake pathway might be related to this homeostatic modulation. All together, these results show that isotopic and quantitative analyses of toxic and endogenous elements are powerful tools to help deciphering the toxicity mechanisms of heavy metals.
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Affiliation(s)
- Eduardo Paredes
- Den - Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS), CEA, Université Paris-Saclay, F-91191, Gif sur Yvette, France
| | - Emilie Avazeri
- CEA, DRF, Biosciences and biotechnologies institute (BIAM), F-30200, Bagnols-sur-Cèze, France
| | - Véronique Malard
- Laboratory of Protein-Metal Interactions (LIPM), Institute of Biosciences and Biotechnologies of Aix Marseille (BIAM), UMR7265 CEA - CNRS - Aix Marseille Univ, CEA Cadarache, F-13108, Cadarache, France
| | - Claude Vidaud
- CEA, DRF, Biosciences and biotechnologies institute (BIAM), F-30200, Bagnols-sur-Cèze, France
| | - Pascal E Reiller
- Den - Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS), CEA, Université Paris-Saclay, F-91191, Gif sur Yvette, France
| | - Richard Ortega
- University of Bordeaux, CENBG, UMR 5797, F-33170, Gradignan, France.,CNRS, IN2P3, CENBG, UMR 5797, F-33170, Gradignan, France
| | - Anthony Nonell
- Den - Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS), CEA, Université Paris-Saclay, F-91191, Gif sur Yvette, France
| | - Hélène Isnard
- Den - Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS), CEA, Université Paris-Saclay, F-91191, Gif sur Yvette, France
| | - Frédéric Chartier
- Den - Département de Physico-Chimie (DPC), CEA, Université Paris-Saclay, F-91191, Gif sur Yvette, France
| | - Carole Bresson
- Den - Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS), CEA, Université Paris-Saclay, F-91191, Gif sur Yvette, France.
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Carmona A, Malard V, Avazeri E, Roudeau S, Porcaro F, Paredes E, Vidaud C, Bresson C, Ortega R. Uranium exposure of human dopaminergic cells results in low cytotoxicity, accumulation within sub-cytoplasmic regions, and down regulation of MAO-B. Neurotoxicology 2018; 68:177-188. [PMID: 30076899 DOI: 10.1016/j.neuro.2018.07.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/26/2018] [Accepted: 07/30/2018] [Indexed: 12/27/2022]
Abstract
Natural uranium is an ubiquitous element present in the environment and human exposure to low levels of uranium is unavoidable. Although the main target of acute uranium toxicity is the kidney, some concerns have been recently raised about neurological effects of chronic exposure to low levels of uranium. Only very few studies have addressed the molecular mechanisms of uranium neurotoxicity, indicating that the cholinergic and dopaminergic systems could be altered. The main objective of this study was to investigate the mechanisms of natural uranium toxicity, after 7-day continuous exposure, on terminally differentiated human SH-SY5Y cells exhibiting a dopaminergic phenotype. Cell viability was first assessed showing that uranium cytotoxicity only occurred at high exposure concentrations (> 125 μM), far from the expected values for uranium in the blood even after occupational exposure. SH-SY5Y differentiated cells were then continuously exposed to 1, 10, 125 or 250 μM of natural uranium for 7 days and uranium quantitative subcellular distribution was investigated by means of micro-PIXE (Particle Induced X-ray Emission). The subcellular element imaging revealed that uranium was located in defined perinuclear regions of the cytoplasm, suggesting its accumulation in organelles. Uranium was not detected in the nucleus of the differentiated cells. Quantitative analysis evidenced a very low intracellular uranium content at non-cytotoxic levels of exposure (1 and 10 μM). At higher levels of exposure (125 and 250 μM), when cytotoxic effects begin, a larger and disproportional intracellular accumulation of uranium was observed. Finally the expression of dopamine-related genes was quantified using real time qRT-PCR. The expression of monoamine oxidase B (MAO-B) gene was statistically significantly decreased after exposure to uranium while other dopamine-related genes were not modified. The down regulation of MAO-B was confirmed at the protein level. This original result suggests that the inhibition of dopamine catabolism, but also of other MAO-B substrates, could constitute selective effects of uranium neurotoxicity.
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Affiliation(s)
- Asuncion Carmona
- University of Bordeaux, CENBG, UMR 5797, F-33170 Gradignan, France; CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan, France
| | - Véronique Malard
- Laboratory of Protein-Metal Interactions (LIPM), Institute of Biosciences and Biotechnologies of Aix Marseille (BIAM), UMR7265 CEA - CNRS - Aix Marseille Univ, CEA Cadarache, F-13108 Saint-Paul-lez-Durance, France
| | - Emilie Avazeri
- CEA, DRF, Biosciences and Biotechnologies Institute (BIAM), Bagnols-sur-Cèze, France
| | - Stéphane Roudeau
- University of Bordeaux, CENBG, UMR 5797, F-33170 Gradignan, France; CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan, France
| | - Francesco Porcaro
- University of Bordeaux, CENBG, UMR 5797, F-33170 Gradignan, France; CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan, France
| | - Eduardo Paredes
- Den - Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS), CEA, Université Paris-Saclay, F-91191, Gif sur Yvette, France
| | - Claude Vidaud
- CEA, DRF, Biosciences and Biotechnologies Institute (BIAM), Bagnols-sur-Cèze, France
| | - Carole Bresson
- Den - Service d'Etudes Analytiques et de Réactivité des Surfaces (SEARS), CEA, Université Paris-Saclay, F-91191, Gif sur Yvette, France
| | - Richard Ortega
- University of Bordeaux, CENBG, UMR 5797, F-33170 Gradignan, France; CNRS, IN2P3, CENBG, UMR 5797, F-33170 Gradignan, France.
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Lauwens S, Costas-Rodríguez M, Vanhaecke F. Ultra-trace Cu isotope ratio measurements via multi-collector ICP-mass spectrometry using Ga as internal standard: an approach applicable to micro-samples. Anal Chim Acta 2018; 1025:69-79. [PMID: 29801609 DOI: 10.1016/j.aca.2018.05.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 05/03/2018] [Accepted: 05/08/2018] [Indexed: 10/17/2022]
Abstract
The capabilities of Cu isotope ratio measurements are often restricted by the small volumes of sample available and/or their low Cu concentration. In this work, an analytical approach was developed for performing Cu isotopic analysis via multi-collector ICP-mass spectrometry (MC-ICP-MS) at ultra-trace level using Ga as an internal standard for mass bias correction. The minimum concentration of Cu required for accurate and precise isotope ratio measurements was established to be 20 μg L-1 with wet plasma conditions and 5 μg L-1 with dry plasma conditions. The use of Ga as an internal standard for mass bias correction provided several advantages compared to Ni, i.e. improved internal precision on δ65Cu values and lower blank levels. Ga can also be used at a 4-fold lower concentration level than Ni. However, in wet plasma conditions, the signals of 36Ar16O21H+ and 40Ar15N16O+ interfered with the signals of 69Ga+ and 71Ga+, respectively, while in dry plasma conditions, realized by the use of a desolvation unit, 69Ga+ suffered from spectral interference from 40Ar14N21H+. These interferences were resolved by using medium mass resolution. For validation purposes, the approach was applied to commercially available blood and serum samples. The δ65Cu values for the samples measured at a concentration level of 5 μg L-1 Cu and 5 μg L-1 Ga using dry plasma conditions were in good agreement with those obtained for isotope ratio measurements at the "standard" concentration level of 200 μg L-1 Cu and 200 μg L-1 Ni using wet plasma conditions. In addition, the δ65Cu values obtained for micro-samples of serum/blood (volume of 100 µL) were in good agreement with the corresponding ones obtained using the "standard" volume for isotopic analysis (500 μL).
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Affiliation(s)
- Sara Lauwens
- Ghent University, Department of Chemistry, Atomic and Mass Spectrometry - A&MS Research Unit, Campus Sterre, Krijgslaan 281-S12, 9000 Ghent, Belgium
| | - Marta Costas-Rodríguez
- Ghent University, Department of Chemistry, Atomic and Mass Spectrometry - A&MS Research Unit, Campus Sterre, Krijgslaan 281-S12, 9000 Ghent, Belgium
| | - Frank Vanhaecke
- Ghent University, Department of Chemistry, Atomic and Mass Spectrometry - A&MS Research Unit, Campus Sterre, Krijgslaan 281-S12, 9000 Ghent, Belgium.
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