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Badran G, Grare C, Masson JD, David MO, Achour D, Guidice JML, Garçon G, Crépeaux G. Difference in the cellular response following THP-1 derived phagocytic monocyte cells exposure to commercial aluminum-based adjuvants and aluminum-containing vaccines. J Trace Elem Med Biol 2024; 83:127394. [PMID: 38262194 DOI: 10.1016/j.jtemb.2024.127394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 01/12/2024] [Accepted: 01/12/2024] [Indexed: 01/25/2024]
Abstract
BACKGROUND Aluminum-based adjuvants (ABAs) enhance the immune response following vaccine injection. Their mechanisms of action are not fully understood, and their bio-persistency have been described associated with long-term adverse effects. METHODS We evaluated and compared the cellular effects of the two main ABAs and whole vaccines on ATP production, ROS generation and cytokines production (IL-6 and IL-10), using THP-1 cells. RESULTS ABAs altered the cell energy metabolism by increasing ROS production after 24 h and reducing ATP production after 48 h. In addition, both ABAs and whole vaccines induced different kinetics of IL-6 production, whereas only ABAs induced IL-10 secretion. CONCLUSION This study showed clearly, for a first time, a difference in cellular response to the ABAs and whole vaccines which should be taken into consideration in future studies focusing on the effect of ABA in vaccines. Future studies on ABAs should also pay attention to mitochondrial function alterations following exposure to ABA-containing vaccines.
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Affiliation(s)
- Ghidaa Badran
- Univ Paris Est Créteil, INSERM, IMRB, F-94010 Créteil, France.
| | - Céline Grare
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | | | - Marie-Odile David
- Université Paris-Saclay, Inserm, Univ Evry, Structure-Activité des Biomolécules Normales et Pathologiques, U1204, 91025 Evry, France
| | - Djamal Achour
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - Jean-Marc Lo Guidice
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - Guillaume Garçon
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - Guillemette Crépeaux
- Univ Paris Est Créteil, INSERM, IMRB, F-94010 Créteil, France; Ecole Nationale Vétérinaire d'Alfort, IMRB, F-94700 Maisons-Alfort, France
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Hubert A, Achour D, Grare C, Zarcone G, Muntaner M, Hamroun A, Gauthier V, Amouyel P, Matran R, Zerimech F, Lo-Guidice JM, Dauchet L. The relationship between residential exposure to atmospheric pollution and circulating miRNA in adults living in an urban area in northern France. Environ Int 2023; 174:107913. [PMID: 37037173 DOI: 10.1016/j.envint.2023.107913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 03/04/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
INTRODUCTION MicroRNAs are epigenetic regulatory factors capable of silencing the expression of target genes and might mediate the effects of air pollution on health. The objective of the present population-based study was to investigate the association between microRNA expression and long-term, residential exposure to atmospheric PM10 and NO2. METHOD We included 998 non-smoking adult participants from the cross-sectional ELISABET survey (2010-2014) in the Lille urban area of France. The mean residential annual pollution levels were estimated with an atmospheric dispersion modelling system. Ten microRNAs were selected on the basis of the literature data, together with two housekeeping microRNAs (miR-93-5p and miR-191-5p) and were quantified with RT-qPCRs. Multivariate linear regression models were used to study the association between microRNAs and air pollution. The threshold for statistical significance (after correction for the FDR) was set to p < 0.1. RESULTS The mean annual exposure between 2011 and the year of inclusion was 26.4 ± 2.0 µg/m3 for PM10 and 24.7 ± 5.1 µg/m3 for NO2. Each 2 µg/m3 increment in PM10 exposure was associated with an 8.6% increment (95%CI [3.1; 14.3]; pFDR = 0.019) in miR-451a expression. A 5 µg/m3 increment in NO2 exposure was associated with a 5.3% increment ([0.7; 10]; pFDR = 0.056) in miR451a expression, a 3.6% decrement (95%CI [-6.1; -1.1]; pFDR = 0.052) in miR-223-3p expression, a 3.8% decrement (95%CI[-6.8; -0.7]; pFDR = 0.079) in miR-28-3p expression, a 4.3% decrement (95%CI [-7.7; -0.8]; pFDR = 0.055) in miR-146a-5p expression, and a 4.0% decrement (95% CI[-7.4; -0.4]; pFDR = 0.059) in miR-23a-5p expression. The difference between the two housekeeping microRNAs miR-93-5p and miR-191-5p was also associated with PM10 and NO2 exposure. CONCLUSION Our results suggest that circulating miRNAs are potentially valuable biomarkers of the effects of air pollution.
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Affiliation(s)
- Audrey Hubert
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Djamal Achour
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Céline Grare
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Gianni Zarcone
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Manon Muntaner
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Aghiles Hamroun
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Victoria Gauthier
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Philippe Amouyel
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Régis Matran
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Farid Zerimech
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Jean-Marc Lo-Guidice
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Luc Dauchet
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
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Darras-Hostens M, Achour D, Muntaner M, Grare C, Zarcone G, Garçon G, Amouyel P, Zerimech F, Matran R, Guidice JML, Dauchet L. Short-term and residential exposure to air pollution: Associations with inflammatory biomarker levels in adults living in northern France. Sci Total Environ 2022; 833:154985. [PMID: 35398417 DOI: 10.1016/j.scitotenv.2022.154985] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 03/24/2022] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
INTRODUCTION Air pollution has an impact on health, and low-grade inflammation might be one of the underlying mechanisms. The objective of the present study of adults from northern France was to assess the associations between short-term and residential exposure to air pollution and levels of various inflammatory biomarkers. METHODS The cross-sectional Enquête Littoral Souffle Air Biologie Environnement (ELISABET) study was conducted from 2011 to 2013 in the Lille and Dunkirk urban areas of northern France. Here, we evaluated the associations between PM10, NO2 and O3 exposure (on the day of the blood sample collection and on the day before, and the mean annual residential level) and levels of the inflammatory biomarkers high-sensitivity C-reactive protein (hsCRP), interleukin (IL)-1β, IL-6, IL-8, IL-10, IL-17A, IL-22, and tumor necrosis factor α. RESULTS We assessed 3074 participants for the association with hsCRP and a subsample of 982 non-smokers from Lille for the association with plasma cytokine levels. A 10 μg/m3 increment in PM10 and NO2 levels on the day of sample collection and on the day before was associated with a higher hsCRP concentration (3.43% [0.68; 6.25] and 1.75% [-1.96; 5.61], respectively, whereas a 10 μg/m3 increment in O3 was associated with lower hsCRP concentration (-1.2% [-3.95; 1.64]). The associations between mean annual exposure and the hsCRP level were not significant. Likewise, the associations between exposure and plasma cytokine levels were not statistically significant. CONCLUSION Short-term exposure to air pollution was associated with higher serum hsCRP levels in adult residents of two urban areas in northern France. Our results suggest that along with other factors, low-grade inflammation might explain the harmful effects of air pollution on health.
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Affiliation(s)
- Marion Darras-Hostens
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Djamal Achour
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Manon Muntaner
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Céline Grare
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Gianni Zarcone
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Guillaume Garçon
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Philippe Amouyel
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
| | - Farid Zerimech
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Régis Matran
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Jean-Marc Lo Guidice
- Univ. Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483 - IMPECS - IMPact de l'Environnement Chimique sur la Santé, F-59000 Lille, France.
| | - Luc Dauchet
- Univ. Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France.
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Boudjema J, Lima B, Grare C, Alleman LY, Rousset D, Perdrix E, Achour D, Anthérieu S, Platel A, Nesslany F, Leroyer A, Nisse C, Lo Guidice JM, Garçon G. Metal enriched quasi-ultrafine particles from stainless steel gas metal arc welding induced genetic and epigenetic alterations in BEAS-2B cells. NanoImpact 2021; 23:100346. [PMID: 35559847 DOI: 10.1016/j.impact.2021.100346] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/26/2021] [Accepted: 08/03/2021] [Indexed: 06/15/2023]
Abstract
Recent evidence has supported welding fume (WF)-derived ultrafine particles (UFP) could be the driving force of their adverse health effects. However, UFP have not yet been extensively studied and are currently not included in present air quality standards/guidelines. Here, attention was focused on the underlying genetic and epigenetic mechanisms by which the quasi-UFP (Q-UFP, i.e., ≤ 0.25 μm) of the WF emitted by gas metal arc welding-stainless steel (GMAW-SS) exert their toxicity in human bronchial epithelial BEAS-2B cells. The Q-UFP under study showed a monomodal size distribution in number centered on 104.4 ± 52.3 nm and a zeta potential of -13.8 ± 0.3 mV. They were enriched in Fe > Cr > Mn > Si, and displayed a relatively high intrinsic oxidative potential. Dose-dependent activation of nuclear factor erythroid 2-related factor 2 and nuclear factor-kappa B signaling pathway, glutathione alteration, and DNA, protein and lipid oxidative damage were reported in BEAS-2B cells acutely (1.5 and 9 μg/cm2, 24 h) or repeatedly (0.25 and 1.5 μg/cm2, 3 × 24 h) exposed to Q-UFP (p < 0.05). Alterations of the Histone H3 acetylation were reported for any exposure (p < 0.05). Differentially regulated miRNA and mRNA indicated the activation of some critical cell signaling pathways related to oxidative stress, inflammation, and cell cycle deregulation towards apoptosis. Taken together, these results highlighted the urgent need to better evaluate the respective toxicity of the different metals and to include the Q-UFP fraction of WF in current air quality standards/guidelines relevant to the occupational settings.
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Affiliation(s)
- J Boudjema
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France; Action Santé Travail, Aix-Noulette, France
| | - B Lima
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - C Grare
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - L Y Alleman
- IMT Lille Douai, Institut Mines-Télécom, Univ. Lille, Centre for Energy and Environment, F-59000 Lille, France
| | - D Rousset
- Institut National de Recherche et de Sécurité (INRS), Department of Pollutant Metrology, 54500 Vandœuvre-lès-Nancy, France
| | - E Perdrix
- IMT Lille Douai, Institut Mines-Télécom, Univ. Lille, Centre for Energy and Environment, F-59000 Lille, France
| | - D Achour
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - S Anthérieu
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - A Platel
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - F Nesslany
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - A Leroyer
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - C Nisse
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - J-M Lo Guidice
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - G Garçon
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France.
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Badran G, Verdin A, Grare C, Abbas I, Achour D, Ledoux F, Roumie M, Cazier F, Courcot D, Lo Guidice JM, Garçon G. Toxicological appraisal of the chemical fractions of ambient fine (PM 2.5-0.3) and quasi-ultrafine (PM 0.3) particles in human bronchial epithelial BEAS-2B cells. Environ Pollut 2020; 263:114620. [PMID: 33618464 DOI: 10.1016/j.envpol.2020.114620] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/14/2020] [Accepted: 04/14/2020] [Indexed: 06/12/2023]
Abstract
New toxicological research is still urgently needed to improve the current knowledge about the induction of some underlying mechanisms of toxicity by the different chemical fractions of ambient particulate matter (PM). This in vitro study sought also to better evaluate and compare the respective toxicities of fine particles (PM2.5-0.3) and their inorganic and organic chemical fractions, and the respective toxicities of the organic chemical fractions of PM2.5-0.3 and quasi-ultrafine particles (PM0.3). Human bronchial epithelial BEAS-2B cells were also exposed for 6-48 h to relatively low doses of PM2.5-0.3 and their organic extractable (OEM2.5-0.3) and non-extractable (NEM2.5-0.3) fractions, and the organic extractable fraction (OEM0.3) of PM0.3. We reported that not only PM2.5-0.3, but also, to a lesser extent, its inorganic chemical fraction, NEM2.5-0.3, and organic chemical fraction, OEM2.5-0.3, were able to significantly induce ROS overproduction and oxidative damage notwithstanding the early activation of NRF2 signaling pathway. Moreover, for any exposure, inflammatory and apoptotic events were noticed. Similar results were observed in BEAS-2B cells exposed to OEM0.3, rich of polycyclic aromatic hydrocarbons and their nitrated and oxygenated derivatives. In BEAS-2B cells exposed for 24 and 48 h to OEM2.5-0.3 and OEM0.3, to a higher extent, there was an alteration of the levels of some critical proteins even though crucial for the autophagy rather than a real reduction of autophagy. It is noteworthy that the toxicological effects were equal or mostly higher in BEAS-2B cells exposed for 6 and/or 24 h to PM2.5-0.3 from those exposed to NEM2.5-0.3 or OEM2.5-0.3, and in BEAS-2B cells exposed for 6 and/or mostly 24 h to OEM0.3 from those exposed to OEM2.5-0.3. Taken together, these results revealed the higher potentials for toxicity, closely linked to their respective physical and chemical characteristics, of PM2.5-0.3 vs NEM2.5-0.3 and/or OEM2.5-0.3, and OEM0.3 vs OEM2.5-0.3.
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Affiliation(s)
- Ghidaa Badran
- Unité de Chimie Environnementale et Interactions sur le Vivant, UCEIV-EA 4492, FR CNRS, 3417, Univ. Littoral Côte d'Opale, Dunkerque, France; CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France; Lebanese Atomic Energy Commission, NCSR, Beirut, Lebanon
| | - Anthony Verdin
- Unité de Chimie Environnementale et Interactions sur le Vivant, UCEIV-EA 4492, FR CNRS, 3417, Univ. Littoral Côte d'Opale, Dunkerque, France
| | - Céline Grare
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - Imane Abbas
- Lebanese Atomic Energy Commission, NCSR, Beirut, Lebanon
| | - Djamal Achour
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - Frédéric Ledoux
- Unité de Chimie Environnementale et Interactions sur le Vivant, UCEIV-EA 4492, FR CNRS, 3417, Univ. Littoral Côte d'Opale, Dunkerque, France
| | - Mohamad Roumie
- Lebanese Atomic Energy Commission, NCSR, Beirut, Lebanon
| | - Fabrice Cazier
- Centre Commun de Mesures, Maison de la Recherche en Environnement Industriel, Univ. du Littoral Côte d'Opale, Dunkerque, France
| | - Dominique Courcot
- Unité de Chimie Environnementale et Interactions sur le Vivant, UCEIV-EA 4492, FR CNRS, 3417, Univ. Littoral Côte d'Opale, Dunkerque, France
| | - Jean-Marc Lo Guidice
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France
| | - Guillaume Garçon
- CHU Lille, Institut Pasteur de Lille, ULR 4483-IMPacts de l'Environnement Chimique sur la Santé (IMPECS), Univ. Lille, Lille, France.
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Clabaut A, Grare C, Léger T, Hardouin P, Broux O. Variations of secretome profiles according to conditioned medium preparation: The example of human mesenchymal stem cell-derived adipocytes. Electrophoresis 2015; 36:2587-93. [DOI: 10.1002/elps.201500086] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 05/28/2015] [Accepted: 06/12/2015] [Indexed: 01/08/2023]
Affiliation(s)
- Aline Clabaut
- ULCO, PMOI; Boulogne-sur-mer France
- University of Lille; PMOI Lille France
| | - Céline Grare
- ULCO, PMOI; Boulogne-sur-mer France
- University of Lille; PMOI Lille France
| | - Thibaut Léger
- Mass spectrometry Laboratory; Institut Jacques Monod, UMR 7592, Univ Paris Diderot, CNRS; Paris France
| | - Pierre Hardouin
- ULCO, PMOI; Boulogne-sur-mer France
- University of Lille; PMOI Lille France
| | - Odile Broux
- ULCO, PMOI; Boulogne-sur-mer France
- University of Lille; PMOI Lille France
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