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Mbeh DA, Javanbakht T, Tabet L, Merhi Y, Maghni K, Sacher E, Yahia LH. Protein Corona Formation on Magnetite Nanoparticles: Effects of Culture Medium Composition, and Its Consequences on Superparamagnetic Nanoparticle Cytotoxicity. J Biomed Nanotechnol 2015; 11:828-40. [PMID: 26349395 DOI: 10.1166/jbn.2015.2000] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The physicochemical properties and potential cytotoxicity of nanoparticles (NPs) are significantly influenced by their inter- action with proteins, which results in corona formation. Here, we have determined whether corona formation, resulting from interactions between superparamagnetic iron oxide nanoparticles (SPIONs) and different cell culture media, may have consequences for driving NP toxic effects. To address this issue, complementary methods were used. The deter- mination of the hydrodynamic size distribution by ζ (zeta) potential measurement indicated that SPIONs were negatively charged under all conditions but that the actual charge was differed with the cell culture medium used. In vitro protein adsorption studies were carried out using the Bradford protein assay and Fourier transform infrared spectroscopy (FTIR). The Bradford assay revealed that the concentration of unadsorbed proteins and other biomolecules decreased when the SPION concentration increased. FTIR showed that the proteins were, indeed, adsorbed onto the NP surface. This was followed by matrix-assisted laser desorption/ionization time-of-flight secondary ion mass spectrometry (MALDI TOF-SIMS), to identify the adsorbed proteins. Ultimately, three different cell viability assays led to the conclusion that the SPIONs were not toxic for all the concentrations used here. In summary, we found that corona formation on the SPIONs depends on the composition of the culture media but has no consequence for nanotoxicity. We have shown that the application of complementary methods has provided novel insights into SPION/protein interactions.
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Mbeh DA, Mireles LK, Stanicki D, Tabet L, Maghni K, Laurent S, Sacher E, Yahia L. Human alveolar epithelial cell responses to core-shell superparamagnetic iron oxide nanoparticles (SPIONs). Langmuir 2015; 31:3829-3839. [PMID: 25815973 DOI: 10.1021/la5040646] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Superparamagnetic iron oxide nanoparticles (SPIONs) have been prepared and coated with positively (-NH3(+)) and negatively (-COO(-)) charged shells. These NPs, as well as their "bare" precursor, which actually contain surface hydroxyl groups, have been characterized in vitro, and their influence on a human epithelial cell line has been assessed in terms of cell metabolic activity, cellular membrane lysis, mitochondrial activity, and reactive oxygen species production. Their physicochemical characterizations and protein-nanoparticle interactions have been determined using dynamic light scattering, high-resolution transmission electron microscopy, matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) spectrometry, and Coomassie Blue fast staining. Cell-SPION interactions have been determined by PrestoBlue resazurin-based, Trypan Blue dye exclusion-based, and MTS cell proliferation assays as well as by reactive oxygen species determination. The results show that different surface characteristics cause different protein corona and cell responses. Some proteins (e.g., albumin) are adsorbed only on positively charged coatings and others (e.g., fibrinogen) only on negatively charged coating. No cell deaths occur, but cell proliferation is influenced by surface chemistry. Proliferation reduction is dose dependent and highest for bare SPIONs. Negatively charged SPIONs were the most biocompatible.
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Affiliation(s)
| | | | - Dimitri Stanicki
- ‡Department of General, Organic, and Biomedical Chemistry, Nuclear Magnetic Resonance and Molecular Imaging Laboratory, University of Mons, Mons 7000, Belgium
| | - Lyes Tabet
- §Research Center, Hôpital Sacré-Cœur Montreal, 5400 Boulevard Gouin Ouest, Montréal, Québec H4J 1C5, Canada
| | - Karim Maghni
- §Research Center, Hôpital Sacré-Cœur Montreal, 5400 Boulevard Gouin Ouest, Montréal, Québec H4J 1C5, Canada
| | - Sophie Laurent
- ‡Department of General, Organic, and Biomedical Chemistry, Nuclear Magnetic Resonance and Molecular Imaging Laboratory, University of Mons, Mons 7000, Belgium
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Tabet L, Bussy C, Setyan A, Simon-Deckers A, Rossi MJ, Boczkowski J, Lanone S. Coating carbon nanotubes with a polystyrene-based polymer protects against pulmonary toxicity. Part Fibre Toxicol 2011; 8:3. [PMID: 21255417 PMCID: PMC3030506 DOI: 10.1186/1743-8977-8-3] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Accepted: 01/21/2011] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND carbon nanotubes (CNT) can have adverse effects on health. Therefore, minimizing the risk associated with CNT exposure is of crucial importance. The aim of this work was to evaluate if coating multi-walled CNT (MWCNT) with polymers could modify their toxicity, thus representing a useful strategy to decrease adverse health effects of CNT. We used industrially-produced MWCNT uncoated (NT1) or coated (50/50 wt%) with acid-based (NT2) or polystyrene-based (NT3) polymer, and exposed murine macrophages (RAW 264.7 cell line) or Balb/c mice by intratracheal administration. Biological experiments were performed both in vitro and in vivo, examining time- and dose-dependent effects of CNT, in terms of cytotoxicity, expression of genes and proteins related to oxidative stress, inflammation and tissue remodeling, cell and lung tissue morphology (optical and transmission electron microscopy), and bronchoalveolar lavage fluid content analysis. RESULTS extensive physico-chemical characterization of MWCNT was performed, and showed, although similar dimensions for the 3 MWCNT, a much smaller specific surface area for NT2 and NT3 as compared to NT1 (54.1, 34 and 227.54 m(2)/g respectively), along with different surface characteristics. MWCNT-induced cytotoxicity, oxidative stress, and inflammation were increased by acid-based and decreased by polystyrene-based polymer coating both in vitro in murine macrophages and in vivo in lung of mice monitored for 6 months. CONCLUSIONS these results demonstrate that coating CNT with polymers, without affecting their intrinsic structure, may constitute a useful strategy for decreasing CNT toxicity, and may hold promise for improving occupational safety and that of general the user.
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Tabet L, Bussy C, Amara N, Setyan A, Grodet A, Rossi MJ, Pairon JC, Boczkowski J, Lanone S. Adverse effects of industrial multiwalled carbon nanotubes on human pulmonary cells. J Toxicol Environ Health A 2009; 72:60-73. [PMID: 19034795 PMCID: PMC2802701 DOI: 10.1080/15287390802476991] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
The aim of this study was to evaluate adverse effects of multiwalled carbon nanotubes (MWCNT), produced for industrial purposes, on the human epithelial cell line A549. MWCNT were dispersed in dipalmitoyl lecithin (DPL), a component of pulmonary surfactant, and the effects of dispersion in DPL were compared to those in two other media: ethanol (EtOH) and phosphate-buffered saline (PBS). Effects of MWCNT were also compared to those of two asbestos fibers (chrysotile and crocidolite) and carbon black (CB) nanoparticles, not only in A549 cells but also in mesothelial cells (MeT5A human cell line), used as an asbestos-sensitive cell type. MWCNT formed agglomerates on top of both cell lines (surface area 15-35 microm(2)) that were significantly larger and more numerous in PBS than in EtOH and DPL. Whatever the dispersion media, incubation with 100 microg/ml MWCNT induced a similar decrease in metabolic activity without changing cell membrane permeability or apoptosis. Neither MWCNT cellular internalization nor oxidative stress was observed. In contrast, asbestos fibers penetrated into the cells, decreased metabolic activity but not cell membrane permeability, and increased apoptosis, without decreasing cell number. CB was internalized without any adverse effects. In conclusion, this study demonstrates that MWCNT produced for industrial purposes exert adverse effects without being internalized by human epithelial and mesothelial pulmonary cell lines.
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Affiliation(s)
- Lyes Tabet
- Physiopathologie et Epidemiologie de l'Insuffisance Respiratoire
INSERM : U700Université Paris-Diderot - Paris VIIFaculte de Medecine Xavier Bichat PARIS VII 16, Rue Henri Huchard 75870 PARIS CEDEX 18,FR
| | - Cyrill Bussy
- Physiopathologie et Epidemiologie de l'Insuffisance Respiratoire
INSERM : U700Université Paris-Diderot - Paris VIIFaculte de Medecine Xavier Bichat PARIS VII 16, Rue Henri Huchard 75870 PARIS CEDEX 18,FR
| | - Nadia Amara
- Physiopathologie et Epidemiologie de l'Insuffisance Respiratoire
INSERM : U700Université Paris-Diderot - Paris VIIFaculte de Medecine Xavier Bichat PARIS VII 16, Rue Henri Huchard 75870 PARIS CEDEX 18,FR
| | - Ari Setyan
- Institut universitaire romand de Santé au Travail (Institute for Work and Health)
Université de LausanneUniversité de GenèveLausanne,CH
| | - Alain Grodet
- CRB3, Centre de recherche biomédicale Bichat-Beaujon
INSERM : U773Université Paris-Diderot - Paris VIIFaculte de Medecine Xavier Bichat 16, Rue Henri Huchard 75870 PARIS CEDEX 18,FR
| | - Michel J. Rossi
- Laboratoire de Pollution Atmosphérique et Sol
Ecole Polytechnique Fédérale de Lausanne (EPFL)Lausanne,CH
| | - Jean-Claude Pairon
- IMRB, Institut Mondor de recherche biomédicale
INSERM : U841Université Paris XII Val de MarneHôpital Henri Mondor 51, av du mal de lattre de tassigny 94010 CRETEIL CEDEX,FR
| | - Jorge Boczkowski
- Physiopathologie et Epidemiologie de l'Insuffisance Respiratoire
INSERM : U700Université Paris-Diderot - Paris VIIFaculte de Medecine Xavier Bichat PARIS VII 16, Rue Henri Huchard 75870 PARIS CEDEX 18,FR
- Hôpital Bichat- Claude Bernard
AP-HPParis,FR
- * Correspondence should be adressed to: Jorge Boczkowski
| | - Sophie Lanone
- Physiopathologie et Epidemiologie de l'Insuffisance Respiratoire
INSERM : U700Université Paris-Diderot - Paris VIIFaculte de Medecine Xavier Bichat PARIS VII 16, Rue Henri Huchard 75870 PARIS CEDEX 18,FR
- IMRB, Institut Mondor de recherche biomédicale
INSERM : U841Université Paris XII Val de MarneHôpital Henri Mondor 51, av du mal de lattre de tassigny 94010 CRETEIL CEDEX,FR
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Bussy C, Tabet L, Boczkowski J, Lanone S. 033 Toxicité respiratoire des nanotubes de carbone. Rev Mal Respir 2007. [DOI: 10.1016/s0761-8425(07)74324-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Bachoual R, Boczkowski J, Goven D, Amara N, Tabet L, On D, Leçon-Malas V, Aubier M, Lanone S. Biological effects of particles from the paris subway system. Chem Res Toxicol 2007; 20:1426-33. [PMID: 17883261 DOI: 10.1021/tx700093j] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Particulate matter (PM) from atmospheric pollution can easily deposit in the lungs and induce recruitment of inflammatory cells, a source of inflammatory cytokines, oxidants, and matrix metalloproteases (MMPs), which are important players in lung structural homeostasis. In many large cities, the subway system is a potent source of PM emission, but little is known about the biological effects of PM from this source. We performed a comprehensive study to evaluate the biological effects of PM sampled at two sites (RER and Metro) in the Paris subway system. Murine macrophages (RAW 264.7) and C57Bl/6 mice, respectively, were exposed to 0.01-10 microg/cm2 and 5-100 microg/mouse subway PM or reference materials [carbon black (CB), titanium dioxide (TiO2), or diesel exhaust particles (DEPs)]. We analyzed cell viability, production of cellular and lung proinflammatory cytokines [tumor necrosis factor alpha (TNFalpha), macrophage inflammatory protein (MIP-2), KC (the murin analog of interleukin-8), and granulocyte macrophage-colony stimulating factor (GM-CSF)], and mRNA or protein expression of MMP-2, -9, and -12 and heme oxygenase-1 (HO-1). Deferoxamine and polymixin B were used to evaluate the roles of iron and endotoxin, respectively. Noncytotoxic concentrations of subway PM (but not CB, TiO2, or DEPs) induced a time- and dose-dependent increase in TNFalpha and MIP-2 production by RAW 264.7 cells, in a manner involving, at least in part, PM iron content (34% inhibition of TNF production 8 h after stimulation of RAW 264.7 cells with 10 microg/cm2 RER particles pretreated with deferoxamine). Similar increased cytokine production was transiently observed in vivo in mice and was accompanied by an increased neutrophil cellularity of bronchoalveolar lavage (84.83+/-0.98% of polymorphonuclear neutrophils for RER-treated mice after 24 h vs 7.33+/-0.99% for vehicle-treated animals). Subway PM induced an increased expression of MMP-12 and HO-1 both in vitro and in vivo. PM from the Paris subway system has transient biological effects. Further studies are needed to better understand the pathophysiological implications of these findings.
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Affiliation(s)
- Rafik Bachoual
- Inserm, U700 Université Paris 7 Denis Diderot, site Bichat, and Biochimie B, Assistance Publique-Hôpitaux de Paris, Hôpital Bichat, Paris, France
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D'Autréaux B, Pecqueur L, Gonzalez de Peredo A, Diederix REM, Caux-Thang C, Tabet L, Bersch B, Forest E, Michaud-Soret I. Reversible Redox- and Zinc-Dependent Dimerization of theEscherichia coliFur Protein. Biochemistry 2007; 46:1329-42. [PMID: 17260962 DOI: 10.1021/bi061636r] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fur is a bacterial regulator using iron as a cofactor to bind to specific DNA sequences. This protein exists in solution as several oligomeric states, of which the dimer is generally assumed to be the biologically relevant one. We describe the equilibria that exist between dimeric Escherichia coli Fur and higher oligomers. The dissociation constant for the dimer-tetramer equilibrium is estimated to be in the millimolar range. Oligomerization is enhanced at low ionic strength and pH. The as-isolated monomeric form of Fur is not in equilibrium with the dimer and contains two disulfide bridges (C92-C95 and C132-C137). Binding of the monomer to DNA is metal-dependent and sequence specific with an apparent affinity 5.5 times lower than that of the dimer. Size exclusion chromatography, EDC cross-linking, and CD spectroscopy show that reconstitution of the dimer from the monomer requires reduction of the disulfide bridges and coordination of Zn2+. Reduction of the disulfide bridges or Zn2+ alone does not promote dimerization. EDC and DMA cross-links reveal that the N-terminal NH2 group of one subunit is in an ionic interaction with acidic residues of the C-terminal tail and close to Lys76 and Lys97 of the other. Furthermore, the yields of cross-link drastically decrease upon binding of metal in the activation site, suggesting that the N-terminus is involved in the conformational change. Conversely, oxidizing reagents, H2O2 or diamide, disrupt the dimeric structure leading to monomer formation. These results establish that coordination of the zinc ion and the redox state of the cysteines are essential for holding E. coli Fur in a dimeric state.
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Affiliation(s)
- Benoît D'Autréaux
- Laboratoire de Physicochimie des Métaux en Biologie, UMR 5155 CNRS/CEA/UJF, Département Réponse et Dynamique Cellulaires, CEA-Grenoble, 17 avenue des Martyrs, 38054 Grenoble cedex 9, France
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Nehlil J, Loutre JC, Renouardière R, Tabet L. [Sketching and delirious outbursts]. Ann Med Psychol (Paris) 1969; 2:391-5. [PMID: 5365203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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