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Cardoso dos Santos LM, Avila Y, Schvartz D, Rougemont AL, Bochaton-Piallat ML, Ruchonnet-Metrailler I. Laser microdissection, proteomics, and multiplex immunohistochemistry: a bumpy ride into the study of paraffin-embedded fetal and pediatric lung tissues. Front Med (Lausanne) 2023; 10:1191205. [PMID: 37706027 PMCID: PMC10495683 DOI: 10.3389/fmed.2023.1191205] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/28/2023] [Indexed: 09/15/2023] Open
Abstract
Background Knowledge about lung development or lung disease is mainly derived from data extrapolated from mouse models. This has obvious drawbacks in developmental diseases, particularly due to species differences. Our objective is to describe the development of complementary analysis methods that will allow a better understanding of the molecular mechanisms involved in the pathogenesis of rare congenital diseases. Methods Paraffin-embedded human pediatric and fetal lung samples were laser microdissected to enrich different lung regions, namely, bronchioli or alveoli. These samples were analyzed by data-independent acquisition-based quantitative proteomics, and the lung structures were subsequently compared. To confirm the proteomic data, we employed an optimized Sequential ImmunoPeroxidase Labeling and Erasing (SIMPLE) staining for specific proteins of interest. Results By quantitative proteomics, we identified typical pulmonary proteins from being differentially expressed in different regions. While the receptor for advanced glycation end products (RAGE) and the surfactant protein C (SFTPC) were downregulated, tubulin beta 4B (TUBB4B) was upregulated in bronchioli, compared to alveoli. In fetal tissues, CD31 was downregulated in fetal bronchioli compared to canaliculi. Moreover, we confirmed their presence using SIMPLE staining. Some expected proteins did not show up in the proteomic data, such as SOX-9, which was only detected by means of immunohistochemistry in the SIMPLE analysis. Conclusion Our data underline the robustness and applicability of this type of experimental approach, especially for rare paraffin-embedded tissue samples. It also strengthens the importance of these methods for future studies, particularly when considering developmental lung diseases, such as congenital lung anomalies.
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Affiliation(s)
- Luis M. Cardoso dos Santos
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Pediatric Pulmonary Unit, Department of Pediatrics, Gynecology, and Obstetrics, University Hospital of Geneva, Geneva, Switzerland
| | - Yannick Avila
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Pediatric Pulmonary Unit, Department of Pediatrics, Gynecology, and Obstetrics, University Hospital of Geneva, Geneva, Switzerland
| | - Domitille Schvartz
- Proteomics Core Facility, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Bioinformatic Support Platform, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | | | | | - Isabelle Ruchonnet-Metrailler
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- Pediatric Pulmonary Unit, Department of Pediatrics, Gynecology, and Obstetrics, University Hospital of Geneva, Geneva, Switzerland
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2
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Rashpa R, Klages N, Schvartz D, Pasquarello C, Brochet M. The Skp1-Cullin1-FBXO1 complex is a pleiotropic regulator required for the formation of gametes and motile forms in Plasmodium berghei. Nat Commun 2023; 14:1312. [PMID: 36898988 PMCID: PMC10006092 DOI: 10.1038/s41467-023-36999-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 02/27/2023] [Indexed: 03/12/2023] Open
Abstract
Malaria-causing parasites of the Plasmodium genus undergo multiple developmental phases in the human and the mosquito hosts, regulated by various post-translational modifications. While ubiquitination by multi-component E3 ligases is key to regulate a wide range of cellular processes in eukaryotes, little is known about its role in Plasmodium. Here we show that Plasmodium berghei expresses a conserved SKP1/Cullin1/FBXO1 (SCFFBXO1) complex showing tightly regulated expression and localisation across multiple developmental stages. It is key to cell division for nuclear segregation during schizogony and centrosome partitioning during microgametogenesis. It is additionally required for parasite-specific processes including gamete egress from the host erythrocyte, as well as integrity of the apical and the inner membrane complexes (IMC) in merozoite and ookinete, two structures essential for the dissemination of these motile stages. Ubiquitinomic surveys reveal a large set of proteins ubiquitinated in a FBXO1-dependent manner including proteins important for egress and IMC organisation. We additionally demonstrate an interplay between FBXO1-dependent ubiquitination and phosphorylation via calcium-dependent protein kinase 1. Altogether we show that Plasmodium SCFFBXO1 plays conserved roles in cell division and is also important for parasite-specific processes in the mammalian and mosquito hosts.
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Affiliation(s)
- Ravish Rashpa
- University of Geneva, Faculty of Medicine, Department of Microbiology and Molecular Medicine, Geneva, Switzerland.
| | - Natacha Klages
- University of Geneva, Faculty of Medicine, Department of Microbiology and Molecular Medicine, Geneva, Switzerland
| | - Domitille Schvartz
- University of Geneva, Faculty of Medicine, Proteomics Core Facility, Geneva, Switzerland
| | - Carla Pasquarello
- University of Geneva, Faculty of Medicine, Proteomics Core Facility, Geneva, Switzerland
| | - Mathieu Brochet
- University of Geneva, Faculty of Medicine, Department of Microbiology and Molecular Medicine, Geneva, Switzerland.
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3
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Pamies D, Vujić T, Schvartz D, Boccard J, Repond C, Nunes C, Rudaz S, Sanchez JC, González-Ruiz V, Zurich MG. Digoxin Induces Human Astrocyte Reaction In Vitro. Mol Neurobiol 2023; 60:84-97. [PMID: 36223047 PMCID: PMC9758102 DOI: 10.1007/s12035-022-03057-1] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/21/2022] [Indexed: 12/30/2022]
Abstract
Astrocyte reaction is a complex cellular process involving astrocytes in response to various types of CNS injury and a marker of neurotoxicity. It has been abundantly studied in rodents but relatively poorly in human cells due to limited access to the brain. Astrocytes play important roles in cerebral energy metabolism and are also key players in neuroinflammation. Astroglial metabolic and inflammatory changes have been reported with age, leading to the hypothesis that mitochondrial metabolism and inflammatory responses are interconnected. However, the relationship between energy metabolism and astrocyte reactivity in the context of neurotoxicity is not known. We hypothesized that changes in energy metabolism of astrocytes will be coupled to their activation by xenobiotics. Astrocyte reaction and associated energy metabolic changes were assessed by immunostaining, gene expression, proteomics, metabolomics, and extracellular flux analyses after 24 h of exposure of human ReN-derived astrocytes to digoxin (1-10 µM) or TNFα (30 ng/ml) used as a positive control. Strong astrocytic reaction was observed, accompanied by increased glycolysis at low concentrations of digoxin (0.1 and 0.5 µM) and after TNFα exposure, suggesting that increased glycolysis may be a common feature of reactive astrocytes, independent of the triggering molecule. In conclusion, whether astrocyte activation is triggered by cytokines or a xenobiotic, it is strongly tied to energy metabolism in human ReN-derived astrocytes. Increased glycolysis might be considered as an endpoint to detect astrocyte activation by potentially neurotoxic compounds in vitro. Finally, ReN-derived astrocytes may help to decipher mechanisms of neurotoxicity in ascertaining the ability of chemicals to directly target astrocytes.
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Affiliation(s)
- David Pamies
- Department of Biological Sciences, University of Lausanne, Lausanne, Switzerland ,School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Tatjana Vujić
- Swiss Centre for Applied Human Toxicology (SCAHT), Basel, Switzerland ,School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Domitille Schvartz
- Swiss Centre for Applied Human Toxicology (SCAHT), Basel, Switzerland ,School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Julien Boccard
- Translational Biomarker Group, Department of Medicine, University of Geneva, Geneva, Switzerland ,School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Cendrine Repond
- Department of Biological Sciences, University of Lausanne, Lausanne, Switzerland
| | - Carolina Nunes
- Department of Biological Sciences, University of Lausanne, Lausanne, Switzerland ,School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Serge Rudaz
- Translational Biomarker Group, Department of Medicine, University of Geneva, Geneva, Switzerland ,School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Jean-Charles Sanchez
- Swiss Centre for Applied Human Toxicology (SCAHT), Basel, Switzerland ,School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Víctor González-Ruiz
- Translational Biomarker Group, Department of Medicine, University of Geneva, Geneva, Switzerland ,School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Marie-Gabrielle Zurich
- Department of Biological Sciences, University of Lausanne, Lausanne, Switzerland ,School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
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4
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Vujić T, Schvartz D, Furlani IL, Meister I, González-Ruiz V, Rudaz S, Sanchez JC. Oxidative Stress and Extracellular Matrix Remodeling Are Signature Pathways of Extracellular Vesicles Released upon Morphine Exposure on Human Brain Microvascular Endothelial Cells. Cells 2022; 11:cells11233926. [PMID: 36497184 PMCID: PMC9741159 DOI: 10.3390/cells11233926] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/25/2022] [Accepted: 11/01/2022] [Indexed: 12/09/2022] Open
Abstract
Morphine, a commonly used antinociceptive drug in hospitals, is known to cross the blood-brain barrier (BBB) by first passing through brain endothelial cells. Despite its pain-relieving effect, morphine also has detrimental effects, such as the potential induction of redox imbalance in the brain. However, there is still insufficient evidence of these effects on the brain, particularly on the brain endothelial cells and the extracellular vesicles that they naturally release. Indeed, extracellular vesicles (EVs) are nanosized bioparticles produced by almost all cell types and are currently thought to reflect the physiological state of their parent cells. These vesicles have emerged as a promising source of biomarkers by indicating the functional or dysfunctional state of their parent cells and, thus, allowing a better understanding of the biological processes involved in an adverse state. However, there is very little information on the morphine effect on human brain microvascular endothelial cells (HBMECs), and even less on their released EVs. Therefore, the current study aimed at unraveling the detrimental mechanisms of morphine exposure (at 1, 10, 25, 50 and 100 µM) for 24 h on human brain microvascular endothelial cells as well as on their associated EVs. Isolation of EVs was carried out using an affinity-based method. Several orthogonal techniques (NTA, western blotting and proteomics analysis) were used to validate the EVs enrichment, quality and concentration. Data-independent mass spectrometry (DIA-MS)-based proteomics was applied in order to analyze the proteome modulations induced by morphine on HBMECs and EVs. We were able to quantify almost 5500 proteins in HBMECs and 1500 proteins in EVs, of which 256 and 148, respectively, were found to be differentially expressed in at least one condition. Pathway enrichment analysis revealed that the "cell adhesion and extracellular matrix remodeling" process and the "HIF1 pathway", a pathway related to oxidative stress responses, were significantly modulated upon morphine exposure in HBMECs and EVs. Altogether, the combination of proteomics and bioinformatics findings highlighted shared pathways between HBMECs exposed to morphine and their released EVs. These results put forward molecular signatures of morphine-induced toxicity in HBMECs that were also carried by EVs. Therefore, EVs could potentially be regarded as a useful tool to investigate brain endothelial cells dysfunction, and to a different extent, the BBB dysfunction in patient circulation using these "signature pathways".
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Affiliation(s)
- Tatjana Vujić
- Department of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | | | - Izadora Liranço Furlani
- School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
- Department of Chemistry, Federal University of São Carlos, São Carlos 13565-904, Brazil
| | - Isabel Meister
- School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland
| | - Víctor González-Ruiz
- School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland
| | - Serge Rudaz
- School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland
| | - Jean-Charles Sanchez
- Department of Medicine, University of Geneva, 1211 Geneva, Switzerland
- Correspondence: ; Tel.: +41-22-379-54-86
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5
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Brunner J, Schvartz D, Gouiller A, Hainard A, Borchard G. Impact of peptide permeation enhancer on tight junctions opening cellular mechanisms. Biochem Biophys Rep 2022; 32:101375. [PMID: 36324528 PMCID: PMC9618981 DOI: 10.1016/j.bbrep.2022.101375] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 10/03/2022] [Accepted: 10/24/2022] [Indexed: 11/09/2022] Open
Abstract
The myristoylated pentapeptide, L-R5, contains an amino acid sequence of the zeta inhibitory peptide (ZIP) portion (pseudosubstrate) of protein kinase C zeta (PKC ζ). As PKC ζ is involved in the modulation of epithelial tight junctions (TJs) through the phosphorylation of TJ proteins, L-R5 was suggested to interact with the enzyme resulting in the enhancement of paracellular permeability. This study shows that L-R5 does not bind to the enzyme but interacts directly with TJ proteins. We show here that the binding of PKC ζ to occludin and its successive phosphorylation is prevented by L-R5, which leads to TJ disruption and enhanced epithelial permeability. Although L-R5 did not show any in vitro cytotoxicity, a proteomics study revealed that L-R5 interferes with other regulatory pathways, e.g., apoptosis and immune response. We suggest that structural modification of the peptide may increase the specificity TJ protein-peptide interaction. Microscale thermophoresis (MST) showed robust results for protein bindings. The competitivity of L-R5 peptide for the binding of occludin-PKC zeta was shown. Tight junctions proteins expression was decreased due to L-R5 peptide. Multiple other mechanisms can be explored to use L-R5 for other therapies.
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Affiliation(s)
- Joël Brunner
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
| | - Domitille Schvartz
- Proteomics Core Facility, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Aurélie Gouiller
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
| | - Alexandre Hainard
- Proteomics Core Facility, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Gerrit Borchard
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland,Corresponding author.
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6
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Reymond S, Vujić T, Schvartz D, Sanchez JC. Morphine-induced modulation of Nrf2-antioxidant response element signaling pathway in primary human brain microvascular endothelial cells. Sci Rep 2022; 12:4588. [PMID: 35301408 PMCID: PMC8931063 DOI: 10.1038/s41598-022-08712-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 08/25/2021] [Accepted: 03/07/2022] [Indexed: 11/09/2022] Open
Abstract
Morphine is one of the most potent opioid analgesic used for pain treatment. Morphine action in the central nervous system requires crossing the blood-brain barrier. Due to the controversial relationship between morphine and oxidative stress, the potential pro- or antioxidant effects of morphine in the blood-brain barrier is important to be understood, as oxidative stress could cause its disruption and predispose to neurodegenerative diseases. However, investigation is scarce in human brain endothelial cells. Therefore, the present study evaluated the impact of morphine exposure at three different concentrations (1, 10 and 100 µM) for 24 h and 48 h on primary human brain microvascular endothelial cells. A quantitative data-independent acquisition mass spectrometry strategy was used to analyze proteome modulations. Almost 3000 proteins were quantified of which 217 were reported to be significantly regulated in at least one condition versus untreated control. Pathway enrichment analysis unveiled dysregulation of the Nrf2 pathway involved in oxidative stress response. Seahorse assay underlined mitochondria dysfunctions, which were supported by significant expression modulations of relevant mitochondrial proteins. In conclusion, our study revealed the dysregulation of the Nrf2 pathway and mitochondria dysfunctions after morphine exposure, highlighting a potential redox imbalance in human brain endothelial cells.
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Affiliation(s)
- Sandrine Reymond
- Department of Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Swiss Center for Applied Human Toxicology, Geneva, Switzerland
| | - Tatjana Vujić
- Department of Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Swiss Center for Applied Human Toxicology, Geneva, Switzerland
| | - Domitille Schvartz
- Department of Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Swiss Center for Applied Human Toxicology, Geneva, Switzerland
| | - Jean-Charles Sanchez
- Department of Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland. .,Swiss Center for Applied Human Toxicology, Geneva, Switzerland.
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7
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Boccard J, Schvartz D, Codesido S, Hanafi M, Gagnebin Y, Ponte B, Jourdan F, Rudaz S. Gaining Insights Into Metabolic Networks Using Chemometrics and Bioinformatics: Chronic Kidney Disease as a Clinical Model. Front Mol Biosci 2021; 8:682559. [PMID: 34055893 PMCID: PMC8163225 DOI: 10.3389/fmolb.2021.682559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/19/2021] [Indexed: 01/21/2023] Open
Abstract
Because of its ability to generate biological hypotheses, metabolomics offers an innovative and promising approach in many fields, including clinical research. However, collecting specimens in this setting can be difficult to standardize, especially when groups of patients with different degrees of disease severity are considered. In addition, despite major technological advances, it remains challenging to measure all the compounds defining the metabolic network of a biological system. In this context, the characterization of samples based on several analytical setups is now recognized as an efficient strategy to improve the coverage of metabolic complexity. For this purpose, chemometrics proposes efficient methods to reduce the dimensionality of these complex datasets spread over several matrices, allowing the integration of different sources or structures of metabolic information. Bioinformatics databases and query tools designed to describe and explore metabolic network models offer extremely useful solutions for the contextualization of potential biomarker subsets, enabling mechanistic hypotheses to be considered rather than simple associations. In this study, network principal component analysis was used to investigate samples collected from three cohorts of patients including multiple stages of chronic kidney disease. Metabolic profiles were measured using a combination of four analytical setups involving different separation modes in liquid chromatography coupled to high resolution mass spectrometry. Based on the chemometric model, specific patterns of metabolites, such as N-acetyl amino acids, could be associated with the different subgroups of patients. Further investigation of the metabolic signatures carried out using genome-scale network modeling confirmed both tryptophan metabolism and nucleotide interconversion as relevant pathways potentially associated with disease severity. Metabolic modules composed of chemically adjacent or close compounds of biological relevance were further investigated using carbon transfer reaction paths. Overall, the proposed integrative data analysis strategy allowed deeper insights into the metabolic routes associated with different groups of patients to be gained. Because of their complementary role in the knowledge discovery process, the association of chemometrics and bioinformatics in a common workflow is therefore shown as an efficient methodology to gain meaningful insights in a clinical context.
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Affiliation(s)
- Julien Boccard
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Domitille Schvartz
- Translational Biomarker Group, Department of Internal Medicine Specialties, University of Geneva, Geneva, Switzerland
| | - Santiago Codesido
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Mohamed Hanafi
- Unité Statistique, Sensométrie et Chimiométrie, Nantes, France
| | - Yoric Gagnebin
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Belén Ponte
- Service of Nephrology and Hypertension, Department of Medicine, Geneva University Hospitals (HUG), Geneva, Switzerland
| | - Fabien Jourdan
- Toxalim, Research Centre in Food Toxicology, Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Serge Rudaz
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
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8
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Pamies D, Sartori C, Schvartz D, González-Ruiz V, Pellerin L, Nunes C, Tavel D, Maillard V, Boccard J, Rudaz S, Sanchez JC, Zurich MG. Neuroinflammatory Response to TNFα and IL1β Cytokines Is Accompanied by an Increase in Glycolysis in Human Astrocytes In Vitro. Int J Mol Sci 2021; 22:4065. [PMID: 33920048 PMCID: PMC8071021 DOI: 10.3390/ijms22084065] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/02/2021] [Accepted: 04/06/2021] [Indexed: 01/11/2023] Open
Abstract
Astrogliosis has been abundantly studied in rodents but relatively poorly in human cells due to limited access to the brain. Astrocytes play important roles in cerebral energy metabolism, and are also key players in neuroinflammation. Astroglial metabolic and inflammatory changes as a function of age have been reported, leading to the hypothesis that mitochondrial metabolism and inflammatory responses are interconnected in supporting a functional switch of astrocytes from neurotrophic to neurotoxic. This study aimed to explore the metabolic changes occurring in astrocytes during their activation. Astrocytes were derived from human ReN cell neural progenitors and characterized. They were activated by exposure to tumor necrosis factor alpha (TNFα) or interleukin 1β (IL1β) for 24 h. Astrocyte reaction and associated energy metabolic changes were assessed by immunostaining, gene expression, proteomics, metabolomics and extracellular flux analyses. ReN-derived astrocytes reactivity was observed by the modifications of genes and proteins linked to inflammation (cytokines, nuclear factor-kappa B (NFκB), signal transducers and activators of transcription (STATs)) and immune pathways (major histocompatibility complex (MHC) class I). Increased NFκB1, NFκB2 and STAT1 expression, together with decreased STAT3 expression, suggest an activation towards the detrimental pathway. Strong modifications of astrocyte cytoskeleton were observed, including a glial fibrillary acidic protein (GFAP) decrease. Astrogliosis was accompanied by changes in energy metabolism characterized by increased glycolysis and lactate release. Increased glycolysis is reported for the first time during human astrocyte activation. Astrocyte activation is strongly tied to energy metabolism, and a possible association between NFκB signaling and/or MHC class I pathway and glycolysis is suggested.
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Affiliation(s)
- David Pamies
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (D.P.); (C.S.); (L.P.); (C.N.); (D.T.); (V.M.)
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
| | - Chiara Sartori
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (D.P.); (C.S.); (L.P.); (C.N.); (D.T.); (V.M.)
| | - Domitille Schvartz
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
- Translational Biomarker Group, Department of Internal Medicine Specialties, University of Geneva, CH-1211 Genève, Switzerland
| | - Víctor González-Ruiz
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
- Analytical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland and School of Pharmaceutical Sciences, University of Geneva, CH-1211 Genève, Switzerland
| | - Luc Pellerin
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (D.P.); (C.S.); (L.P.); (C.N.); (D.T.); (V.M.)
- INSERM U1082, Faculté de Médecine et de Pharmacie, Université de Poitiers, F-86021 Poitiers, France
| | - Carolina Nunes
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (D.P.); (C.S.); (L.P.); (C.N.); (D.T.); (V.M.)
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
| | - Denise Tavel
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (D.P.); (C.S.); (L.P.); (C.N.); (D.T.); (V.M.)
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
| | - Vanille Maillard
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (D.P.); (C.S.); (L.P.); (C.N.); (D.T.); (V.M.)
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
| | - Julien Boccard
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
- Analytical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland and School of Pharmaceutical Sciences, University of Geneva, CH-1211 Genève, Switzerland
| | - Serge Rudaz
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
- Analytical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland and School of Pharmaceutical Sciences, University of Geneva, CH-1211 Genève, Switzerland
| | - Jean-Charles Sanchez
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
- Translational Biomarker Group, Department of Internal Medicine Specialties, University of Geneva, CH-1211 Genève, Switzerland
| | - Marie-Gabrielle Zurich
- Department of Biomedical Sciences, University of Lausanne, CH-1005 Lausanne, Switzerland; (D.P.); (C.S.); (L.P.); (C.N.); (D.T.); (V.M.)
- Swiss Centre for Applied Human Toxicology (SCAHT), 4055 Basel, Switzerland; (D.S.); (V.G.-R.); (J.B.); (S.R.); (J.-C.S.)
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9
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Abstract
Introduction: Although the hepatotoxicity of acetaminophen is a well-known problem, the search for reliable biomarker of toxicity is still a current issue as clinical tools are missing to assess patients intoxicated following chronic use, sequential ingestion, use of modified release formulations or in case of delayed arrival to hospital. The need for new specific and robust biomarkers for acetaminophen toxicity has prompted many studies exploring the use of blood levels of acetaminophen derivatives, mitochondrial damage markers, liver cell apoptosis and/or necrosis markers and circulating microRNAs. Areas covered: In this review, we present a concise overview of the most promising biomarkers currently under evaluation including descriptions of their properties with respect to exposure type, APAP specificity, and potential clinical application. In addition, we illustrate the power of new technologies for biomarker research and describe their current application to the field of acetaminophen-induced hepatotoxicity. Expert opinion: Recently the use of extracellular vesicles isolation in combination with omics techniques has opened a new perspective to the field of biomarker research. However, the potential of those new technologies for the prediction and monitoring of hepatic diseases and acetaminophen toxicity has not yet been fully taken into consideration.
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Affiliation(s)
- Yvonne Gloor
- a Division of clinical pharmacology and toxicology, Geneva University Hospital , Geneva , Switzerland.,b Laboratory of clinical pharmacology, Faculty of Medicine, University of Geneva , Geneva , Switzerland
| | - Domitille Schvartz
- c Department of internal medicine specialties, Faculty of Medicine, University of Geneva , Geneva , Switzerland
| | - Caroline F Samer
- a Division of clinical pharmacology and toxicology, Geneva University Hospital , Geneva , Switzerland.,b Laboratory of clinical pharmacology, Faculty of Medicine, University of Geneva , Geneva , Switzerland
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10
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Schvartz D, González-Ruiz V, Walter N, Antinori P, Jeanneret F, Tonoli D, Boccard J, Zurich MG, Rudaz S, Monnet-Tschudi F, Sandström J, Sanchez JC. Protein pathway analysis to study development-dependent effects of acute and repeated trimethyltin (TMT) treatments in 3D rat brain cell cultures. Toxicol In Vitro 2019; 60:281-292. [PMID: 31176792 DOI: 10.1016/j.tiv.2019.05.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/18/2019] [Accepted: 05/29/2019] [Indexed: 11/25/2022]
Abstract
Trimethyltin is an organometallic compound, described to be neurotoxic and to trigger neuroinflammation and oxidative stress. Previous studies associated TMT with the perturbation of mitochondrial function, or neurotransmission. However, the mechanisms of toxicity may differ depending on the duration of exposure and on the stage of maturation of brain cells. This study aim at elucidating whether the toxicity pathways triggered by a known neurotoxicant (TMT) differs depending on cell maturation stage or duration of exposure. To this end omics profiling of immature and differentiated 3D rat brain cell cultures exposed for 24 h or 10 days (10-d) to 0.5 and 1 μM of TMT was performed to better understand the underlying mechanisms of TMT associated toxicity. Proteomics identified 55 and 17 proteins affected by acute TMT treatment in immature and differentiated cultures respectively, while 10-day treatment altered 96 proteins in immature cultures versus 353 in differentiated. The results suggest different sensitivity to TMT depending on treatment duration and cell maturation. In accordance with known TMT mechanisms oxidative stress and neuroinflammation was observed after 10-d treatment at both maturation stages, whereas the neuroinflammatory process was more prominent in differentiated cultures than in the immature, no development-dependent difference could be detected for oxidative stress or synaptic neurodegeneration. Pathway analysis revealed that both vesicular trafficking and the synaptic machinery were strongly affected by 10-d TMT treatment in both maturation stages, as was GABAergic and glutamatergic neurotransmission. This study shows that omics approaches combined with pathway analysis constitutes an improved tool-set in elucidating toxicity mechanisms.
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Affiliation(s)
- Domitille Schvartz
- Translational Biomarker Group, Department of Internal Medicine Specialties, University of Geneva, Geneva, Switzerland; Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland
| | - Víctor González-Ruiz
- Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland; Analytical Sciences, School of Pharmaceutical Sciences, Universities of Geneva and Lausanne, Geneva, Switzerland
| | - Nadia Walter
- Translational Biomarker Group, Department of Internal Medicine Specialties, University of Geneva, Geneva, Switzerland; Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland
| | - Paola Antinori
- Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland; Neuroproteomics group, Department of Clinical Neurosciences, University of Geneva, Geneva, Switzerland
| | - Fabienne Jeanneret
- Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland; Analytical Sciences, School of Pharmaceutical Sciences, Universities of Geneva and Lausanne, Geneva, Switzerland
| | - David Tonoli
- Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland; Analytical Sciences, School of Pharmaceutical Sciences, Universities of Geneva and Lausanne, Geneva, Switzerland
| | - Julien Boccard
- Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland; Analytical Sciences, School of Pharmaceutical Sciences, Universities of Geneva and Lausanne, Geneva, Switzerland
| | - Marie-Gabrielle Zurich
- Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland; Department of Physiology, University of Lausanne, Lausanne, Switzerland
| | - Serge Rudaz
- Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland; Analytical Sciences, School of Pharmaceutical Sciences, Universities of Geneva and Lausanne, Geneva, Switzerland
| | - Florianne Monnet-Tschudi
- Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland; Department of Physiology, University of Lausanne, Lausanne, Switzerland
| | - Jenny Sandström
- Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland; Department of Physiology, University of Lausanne, Lausanne, Switzerland
| | - Jean-Charles Sanchez
- Translational Biomarker Group, Department of Internal Medicine Specialties, University of Geneva, Geneva, Switzerland; Swiss Centre for Applied Human Toxicology (SCAHT), Switzerland.
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11
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González-Ruiz V, Schvartz D, Sandström J, Pezzatti J, Jeanneret F, Tonoli D, Boccard J, Monnet-Tschudi F, Sanchez JC, Rudaz S. An Integrative Multi-Omics Workflow to Address Multifactorial Toxicology Experiments. Metabolites 2019; 9:E79. [PMID: 31022902 PMCID: PMC6523777 DOI: 10.3390/metabo9040079] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/03/2019] [Accepted: 04/21/2019] [Indexed: 01/02/2023] Open
Abstract
Toxicology studies can take advantage of omics approaches to better understand the phenomena underlying the phenotypic alterations induced by different types of exposure to certain toxicants. Nevertheless, in order to analyse the data generated from multifactorial omics studies, dedicated data analysis tools are needed. In this work, we propose a new workflow comprising both factor deconvolution and data integration from multiple analytical platforms. As a case study, 3D neural cell cultures were exposed to trimethyltin (TMT) and the relevance of the culture maturation state, the exposure duration, as well as the TMT concentration were simultaneously studied using a metabolomic approach combining four complementary analytical techniques (reversed-phase LC and hydrophilic interaction LC, hyphenated to mass spectrometry in positive and negative ionization modes). The ANOVA multiblock OPLS (AMOPLS) method allowed us to decompose and quantify the contribution of the different experimental factors on the outcome of the TMT exposure. Results showed that the most important contribution to the overall metabolic variability came from the maturation state and treatment duration. Even though the contribution of TMT effects represented the smallest observed modulation among the three factors, it was highly statistically significant. The MetaCore™ pathway analysis tool revealed TMT-induced alterations in biosynthetic pathways and in neuronal differentiation and signaling processes, with a predominant deleterious effect on GABAergic and glutamatergic neurons. This was confirmed by combining proteomic data, increasing the confidence on the mechanistic understanding of such a toxicant exposure.
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Affiliation(s)
- Víctor González-Ruiz
- Analytical Sciences, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1206 Geneva, Switzerland.
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
| | - Domitille Schvartz
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
- Translational Biomarker Group, Department of Internal Medicine Specialties, University of Geneva, 1206 Geneva, Switzerland.
| | - Jenny Sandström
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
- Department of Physiology, University of Lausanne, 1005 Lausanne, Switzerland.
| | - Julian Pezzatti
- Analytical Sciences, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1206 Geneva, Switzerland.
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
| | - Fabienne Jeanneret
- Analytical Sciences, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1206 Geneva, Switzerland.
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
| | - David Tonoli
- Analytical Sciences, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1206 Geneva, Switzerland.
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
| | - Julien Boccard
- Analytical Sciences, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1206 Geneva, Switzerland.
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
| | - Florianne Monnet-Tschudi
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
- Department of Physiology, University of Lausanne, 1005 Lausanne, Switzerland.
| | - Jean-Charles Sanchez
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
- Translational Biomarker Group, Department of Internal Medicine Specialties, University of Geneva, 1206 Geneva, Switzerland.
| | - Serge Rudaz
- Analytical Sciences, School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, 1206 Geneva, Switzerland.
- Swiss Centre for Applied Human Toxicology, 4055 Basel, Switzerland.
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12
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Lachén-Montes M, González-Morales A, Schvartz D, Zelaya MV, Ausin K, Fernández-Irigoyen J, Sánchez JC, Santamaría E. The olfactory bulb proteotype differs across frontotemporal dementia spectrum. J Proteomics 2019; 201:37-47. [PMID: 30999060 DOI: 10.1016/j.jprot.2019.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/08/2019] [Accepted: 04/13/2019] [Indexed: 12/12/2022]
Abstract
Mild olfactory dysfunction has been observed in frontotemporal dementias (FTD). However, the underlying molecular mechanisms associated to this deficit are poorly understood. We applied quantitative proteomics to analyze pathological effects on the olfactory bulb (OB) from progressive supranuclear palsy (PSP) and frontotemporal lobar degeneration (FTLD-TDP43) subjects respect to elderly non-FTD group. Our data revealed: i) a mitochondrial and calcium homeostasis impairment in PSP and ii) a disruption of protein synthesis and vesicle trafficking in FTLD-TDP43. Although differential OB proteomes clearly differ between both FTD phenotypes, functional analyses pointed out an imbalance in survival signaling in both pathologies. A common alteration of olfactory mitogen-activated protein kinases (MAPKs), calcium/calmodulin dependent protein kinase II (CAMKII), and protein kinase C (PKC) signaling pathways was observed in PSP and FTLD subjects. In contrast, a specific shut off in mitogen-activated protein kinase kinase 4 (SEK1/MKK4)/stress-activated protein kinase (SAPK) axis was exclusively observed in PSP, whereas a specific phosphoinositide-dependent protein kinase 1 (PDK1) inactivation was observed in FTLD-TDP43. In summary, our data contribute to a better understanding of the molecular mechanisms that are modulated in PSP and FTLD-TDP43 at olfactory level, highlighting cross-disease similarities and differences in the regulation of survival pathways across FTD spectrum. SIGNIFICANCE: This work reflects differential olfactory molecular disarrangements in PSP and FTLD-TDP43, two clinically similar FTD disorders, but with different neuropathological signature. Besides FTDs present mild olfactory dysfunction, our data provide basic information for understanding the implication of the OB in the pathophysiology of FTDs.
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Affiliation(s)
- Mercedes Lachén-Montes
- Clinical Neuroproteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea, 3, 31008 Pamplona, Spain; Proteored-ISCIII, Proteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea 3, 31008 Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, Pamplona, Spain, Irunlarrea 3, 31008 Pamplona, Spain
| | - Andrea González-Morales
- Clinical Neuroproteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea, 3, 31008 Pamplona, Spain; Proteored-ISCIII, Proteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea 3, 31008 Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, Pamplona, Spain, Irunlarrea 3, 31008 Pamplona, Spain
| | - Domitille Schvartz
- Translational Biomarker Group, Department of Human Protein Sciences, University of Geneva, Rue Michel Servet 1, 1211 Geneve 4, Switzerland
| | - María Victoria Zelaya
- Clinical Neuroproteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea, 3, 31008 Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, Pamplona, Spain, Irunlarrea 3, 31008 Pamplona, Spain; Pathological Anatomy Department, Complejo Hospitalario de Navarra (CHN), Pamplona, Spain
| | - Karina Ausin
- Proteored-ISCIII, Proteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea 3, 31008 Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, Pamplona, Spain, Irunlarrea 3, 31008 Pamplona, Spain
| | - Joaquín Fernández-Irigoyen
- Clinical Neuroproteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea, 3, 31008 Pamplona, Spain; Proteored-ISCIII, Proteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea 3, 31008 Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, Pamplona, Spain, Irunlarrea 3, 31008 Pamplona, Spain
| | - Jean Charles Sánchez
- Translational Biomarker Group, Department of Human Protein Sciences, University of Geneva, Rue Michel Servet 1, 1211 Geneve 4, Switzerland
| | - Enrique Santamaría
- Clinical Neuroproteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea, 3, 31008 Pamplona, Spain; Proteored-ISCIII, Proteomics Unit, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), Irunlarrea 3, 31008 Pamplona, Spain; IdiSNA, Navarra Institute for Health Research, Pamplona, Spain, Irunlarrea 3, 31008 Pamplona, Spain.
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13
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Rocha S, Carvalho J, Oliveira P, Voglstaetter M, Schvartz D, Thomsen AR, Walter N, Khanduri R, Sanchez J, Keller A, Oliveira C, Nazarenko I. 3D Cellular Architecture Affects MicroRNA and Protein Cargo of Extracellular Vesicles. Adv Sci (Weinh) 2019; 6:1800948. [PMID: 30828519 PMCID: PMC6382357 DOI: 10.1002/advs.201800948] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 11/30/2018] [Indexed: 05/05/2023]
Abstract
The success of malignant tumors is conditioned by the intercellular communication between tumor cells and their microenvironment, with extracellular vesicles (EVs) acting as main mediators. While the value of 3D conditions to study tumor cells is well established, the impact of cellular architecture on EV content and function is not investigated yet. Here, a recently developed 3D cell culture microwell array is adapted for EV production and a comprehensive comparative analysis of biochemical features, RNA and proteomic profiles of EVs secreted by 2D vs 3D cultures of gastric cancer cells, is performed. 3D cultures are significantly more efficient in producing EVs than 2D cultures. Global upregulation of microRNAs and downregulation of proteins in 3D are observed, indicating their dynamic coregulation in response to cellular architecture, with the ADP-ribosylation factor 6 signaling pathway significantly downregulated in 3D EVs. The data strengthen the biological relevance of cellular architecture for production and cargo of EVs.
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Affiliation(s)
- Sara Rocha
- i3S—Instituto de Investigação e Inovação em SaúdeUniversidade do PortoRua Alfredo Allen 2084200‐135PortoPortugal
- Ipatimup—Institute of Molecular Pathology and ImmunologyUniversity of PortoRua Júlio Amaral de Carvalho 454200‐135PortoPortugal
- ICBAS—Instituto de Ciências Biomédicas Abel SalazarUniversidade do PortoR. Jorge de Viterbo Ferreira 2284050‐313PortoPortugal
| | - Joana Carvalho
- i3S—Instituto de Investigação e Inovação em SaúdeUniversidade do PortoRua Alfredo Allen 2084200‐135PortoPortugal
- Ipatimup—Institute of Molecular Pathology and ImmunologyUniversity of PortoRua Júlio Amaral de Carvalho 454200‐135PortoPortugal
| | - Patrícia Oliveira
- i3S—Instituto de Investigação e Inovação em SaúdeUniversidade do PortoRua Alfredo Allen 2084200‐135PortoPortugal
- Ipatimup—Institute of Molecular Pathology and ImmunologyUniversity of PortoRua Júlio Amaral de Carvalho 454200‐135PortoPortugal
| | - Maren Voglstaetter
- Institute for Infection Prevention and Hospital EpidemiologyMedical Center—University of FreiburgFaculty of MedicineUniversity of FreiburgBreisacherstr. 115b79106FreiburgGermany
| | - Domitille Schvartz
- Department of Human Protein SciencesCentre Médical UniversitaireRue Michel‐Servet 1CH1211GenevaSwitzerland
| | - Andreas R. Thomsen
- Department of Radiation OncologyMedical Center—University of FreiburgHugstaetterstr 55Freiburg79106Germany
- German Cancer Consortium (DKTK)Partner Site Freiburg and German Cancer Research Center (DKFZ)Im Neuenheimer Feld 28069120HeidelbergGermany
| | - Nadia Walter
- Department of Human Protein SciencesCentre Médical UniversitaireRue Michel‐Servet 1CH1211GenevaSwitzerland
| | - Richa Khanduri
- Institute for Infection Prevention and Hospital EpidemiologyMedical Center—University of FreiburgFaculty of MedicineUniversity of FreiburgBreisacherstr. 115b79106FreiburgGermany
| | - Jean‐Charles Sanchez
- Department of Human Protein SciencesCentre Médical UniversitaireRue Michel‐Servet 1CH1211GenevaSwitzerland
| | - Andreas Keller
- Clinical BioinformaticsUniversity HospitalSaarland UniversityKirrberger Straße, Building E2.166123SaarbrückenGermany
| | - Carla Oliveira
- i3S—Instituto de Investigação e Inovação em SaúdeUniversidade do PortoRua Alfredo Allen 2084200‐135PortoPortugal
- Ipatimup—Institute of Molecular Pathology and ImmunologyUniversity of PortoRua Júlio Amaral de Carvalho 454200‐135PortoPortugal
- Department Pathology and OncologyFaculty of MedicineUniversity of PortoAlameda Prof. Hernâni Monteiro4200‐319PortoPortugal
| | - Irina Nazarenko
- Institute for Infection Prevention and Hospital EpidemiologyMedical Center—University of FreiburgFaculty of MedicineUniversity of FreiburgBreisacherstr. 115b79106FreiburgGermany
- German Cancer Consortium (DKTK)Partner Site Freiburg and German Cancer Research Center (DKFZ)Im Neuenheimer Feld 28069120HeidelbergGermany
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14
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Groebe K, Cen J, Schvartz D, Sargsyan E, Chowdhury A, Roomp K, Schneider R, Alderborn A, Sanchez JC, Bergsten P. Palmitate-Induced Insulin Hypersecretion and Later Secretory Decline Associated with Changes in Protein Expression Patterns in Human Pancreatic Islets. J Proteome Res 2018; 17:3824-3836. [PMID: 30183308 DOI: 10.1021/acs.jproteome.8b00239] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In obese children with high circulating concentrations of free fatty acid palmitate, we have observed that insulin levels at fasting and in response to a glucose challenge were several times higher than in obese children with low concentrations of the fatty acid as well as in lean controls. Declining and even insufficient insulin levels were observed in obese adolescents with high levels of the fatty acid. In isolated human islets exposed to palmitate we have observed insulin hypersecretion after 2 days exposure. In contrast, insulin secretion from the islets was reduced after 7 days culture in the presence of the fatty acid. This study aims at identifying islet-related biological events potentially linked with the observed insulin hypersecretion and later secretory decline in these obese children and adolescents using the islet model. We analyzed protein expression data obtained from human islets exposed to elevated palmitate levels for 2 and 7 days by an improved methodology for statistical analysis of differentially expressed proteins. Protein profiling of islet samples by liquid chromatography-tandem mass spectrometry identified 115 differentially expressed proteins (DEPs). Several DEPs including sorcin were associated with increased glucose-stimulated insulin secretion in islets after 2 days of exposure to palmitate. Similarly, several metabolic pathways including altered protein degradation, increased autophagy, altered redox condition, and hampered insulin processing were coupled to the functional impairment of islets after 7 days of culture in the presence of palmitate. Such biological events, once validated in the islets, may give rise to novel treatment strategies aiming at normalizing insulin levels in obese children with high palmitate levels, which may reduce or even prevent obesity-related type 2 diabetes mellitus.
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Affiliation(s)
| | - Jing Cen
- Department of Medical Cell Biology , Uppsala University , 75236 Uppsala , Sweden
| | - Domitille Schvartz
- Human Protein Sciences Department, Centre Medical Universitaire , University of Geneva , CH-1211 Geneva , Switzerland
| | - Ernest Sargsyan
- Department of Medical Cell Biology , Uppsala University , 75236 Uppsala , Sweden
| | - Azazul Chowdhury
- Department of Medical Cell Biology , Uppsala University , 75236 Uppsala , Sweden
| | - Kirsten Roomp
- Luxembourg Centre for Systems Biomedicine , University of Luxembourg , 4365 Esch-sur-Alzette , Luxembourg
| | - Reinhard Schneider
- Luxembourg Centre for Systems Biomedicine , University of Luxembourg , 4365 Esch-sur-Alzette , Luxembourg
| | - Anders Alderborn
- Department of Medical Cell Biology , Uppsala University , 75236 Uppsala , Sweden
| | - Jean-Charles Sanchez
- Human Protein Sciences Department, Centre Medical Universitaire , University of Geneva , CH-1211 Geneva , Switzerland
| | - Peter Bergsten
- Department of Medical Cell Biology , Uppsala University , 75236 Uppsala , Sweden
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15
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García-Hernández V, Sánchez-Bernal C, Schvartz D, Calvo JJ, Sanchez JC, Sánchez-Yagüe J. Data for Tandem Mass Tag (TMT) proteomic analysis of the pancreas during the early phase of experimental pancreatitis. Data Brief 2018; 20:779-783. [PMID: 30211274 PMCID: PMC6129721 DOI: 10.1016/j.dib.2018.08.142] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 08/24/2018] [Indexed: 11/30/2022] Open
Abstract
The quantitative proteomics data reported here pertain to the research article entitled “A Tandem Mass Tag (TMT) proteomic analysis during the early phase of experimental pancreatitis reveals new insights in the disease pathogenesis” (García-Hernández et al., 2018) [1]. The development of acute pancreatitis (AP, an important pathological inflammatory state of the exocrine pancreas) would be based on early changes in protein expression and signaling pathways whose unmasking would be crucial for deciphering AP at the molecular level. We reported here a Tandem Mass Tag (TMT)-based proteomics analysis of rat subcellular fractions of the pancreas during the early phase of experimental AP, using a sixplex isobaric chemical labeling technique. We identified 997 unique proteins, of which 353 were significantly different (22, 276 or 55 in both, the soluble or the membrane fractions, respectively). Accordingly, using TMT proteomics and bioinformatic tools, in García-Hernández et al., 2018- [1] we were able to detect significant changes in protein expression related to many pathobiological pathways of AP as from the early phase of the disease, including some changes never described before in this disease. Proteomics data are publicly available in ProteomeXchange via PRIDE through the identifier PXD007096.
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Affiliation(s)
- Violeta García-Hernández
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca 37007, Spain.,Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca 37007, Spain
| | - Carmen Sánchez-Bernal
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca 37007, Spain.,Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca 37007, Spain
| | - Domitille Schvartz
- Translational Biomarker Group, Department of Human Protein Sciences, University Medical Center, 1211 Geneva, Switzerland
| | - José J Calvo
- Department of Physiology and Pharmacology, University of Salamanca, Salamanca 37007, Spain.,Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca 37007, Spain
| | - Jean-Charles Sanchez
- Translational Biomarker Group, Department of Human Protein Sciences, University Medical Center, 1211 Geneva, Switzerland
| | - Jesús Sánchez-Yagüe
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca 37007, Spain.,Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca 37007, Spain
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16
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García-Hernández V, Sánchez-Bernal C, Schvartz D, Calvo JJ, Sanchez JC, Sánchez-Yagüe J. A tandem mass tag (TMT) proteomic analysis during the early phase of experimental pancreatitis reveals new insights in the disease pathogenesis. J Proteomics 2018; 181:190-200. [PMID: 29678717 DOI: 10.1016/j.jprot.2018.04.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 03/08/2018] [Accepted: 04/13/2018] [Indexed: 01/15/2023]
Abstract
Changes in the protein expression occurring within the initiation phase of acute pancreatitis (AP) might be vital in the development of this complex disease. However, the exact mechanisms involved in the onset of AP remains elusive and most of our knowledge about the pathobiology of AP comes from animal models. We performed in a rat pancreatitic model a high-throughput shotgun proteomic profiling of the soluble and whole membrane fractions from the pancreas during the early phase of cerulein (Cer)-induced AP. We identified 997 proteins, of which 353 were significantly different (22, 276 or 55 in both, the soluble or the membrane fractions, respectively). Gene Ontology and KEGG PATHWAY analyses revealed that these proteins were implicated in molecular mechanisms relevant to AP pathogenesis, including vesicle-mediated and protein transport, lysosomal and mitochondrial impairment or proteolysis. Numerous metabolic processes were downregulated apparently to reduce energy consumption, and a remarkable increase in inflammatory and stress responses was also highlighted. The proteomic data were verified by immunoblotting of 11 and 7 different soluble or membrane-associated proteins, either novel (VPS29 and MCTS1) or known factors in AP. Also, our first observation of the imbalance of some COP proteins during AP early phase deserves further characterization. BIOLOGICAL SIGNIFICANCE AP is one of the most important pathological inflammatory states of the exocrine pancreas but its pathophysiology remains incompletely understood, especially the early acinar events. Proteomic analysis of pancreatic subcellular fractions simplifies protein maps and helps in the identification of new protein alterations and biomarkers characterizing pancreatic tissue damage. Our shotgun approach has not been previously used to profile the early proteomic alterations of the disease, which are considered crucial for its development and for the founding of clinical procedures. Furthermore, our subcellular fractionation protocol allowed us to detect changes in membrane proteins so far overlooked in the proteomic study of AP. Accordingly, using TMT proteomics and bioinformatic tools, we were able to detect significant changes in protein expression related to many pathobiological pathways of acute pancreatitis as from the early phase of the disease. To our knowledge, some of these changes, such as the imbalance of some COP proteins, have never been described in this disease.
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Affiliation(s)
- Violeta García-Hernández
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca 37007, Spain; Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca 37007, Spain
| | - Carmen Sánchez-Bernal
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca 37007, Spain; Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca 37007, Spain
| | - Domitille Schvartz
- Translational Biomarker Group, Department of Human Protein Sciences, University Medical Center, 1211 Geneva, Switzerland
| | - José J Calvo
- Department of Physiology and Pharmacology, University of Salamanca, Salamanca 37007, Spain; Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca 37007, Spain
| | - Jean-Charles Sanchez
- Translational Biomarker Group, Department of Human Protein Sciences, University Medical Center, 1211 Geneva, Switzerland
| | - Jesús Sánchez-Yagüe
- Department of Biochemistry and Molecular Biology, University of Salamanca, Salamanca 37007, Spain; Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca 37007, Spain.
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17
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Affiliation(s)
- Robert Moulder
- Turku Centre for Biotechnology; University of Turku and Åbo Akademi University; Turku Finland
| | - Domitille Schvartz
- Human Protein Sciences Department; Centre Medical Universitaire; University of Geneva; Geneva, Switzerland
| | - David R. Goodlett
- Turku Centre for Biotechnology; University of Turku and Åbo Akademi University; Turku Finland
- Department of Pharmaceutical Sciences; University of Maryland; Baltimore MD USA
| | - Loïc Dayon
- Nestlé Institute of Health Sciences; EPFL Innovation Park; Lausanne Switzerland
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Roomp K, Kristinsson H, Schvartz D, Ubhayasekera K, Sargsyan E, Manukyan L, Chowdhury A, Manell H, Satagopam V, Groebe K, Schneider R, Bergquist J, Sanchez JC, Bergsten P. Combined lipidomic and proteomic analysis of isolated human islets exposed to palmitate reveals time-dependent changes in insulin secretion and lipid metabolism. PLoS One 2017; 12:e0176391. [PMID: 28448538 PMCID: PMC5407795 DOI: 10.1371/journal.pone.0176391] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 04/10/2017] [Indexed: 01/09/2023] Open
Abstract
Studies on the pathophysiology of type 2 diabetes mellitus (T2DM) have linked the accumulation of lipid metabolites to the development of beta-cell dysfunction and impaired insulin secretion. In most in vitro models of T2DM, rodent islets or beta-cell lines are used and typically focus is on specific cellular pathways or organs. Our aim was to, firstly, develop a combined lipidomics and proteomics approach for lipotoxicity in isolated human islets and, secondly, investigate if the approach could delineate novel and/ or confirm reported mechanisms of lipotoxicity. To this end isolated human pancreatic islets, exposed to chronically elevated palmitate concentrations for 0, 2 and 7 days, were functionally characterized and their levels of multiple targeted lipid and untargeted protein species determined. Glucose-stimulated insulin secretion from the islets increased on day 2 and decreased on day 7. At day 7 islet insulin content decreased and the proinsulin to insulin content ratio doubled. Amounts of cholesterol, stearic acid, C16 dihydroceramide and C24:1 sphingomyelin, obtained from the lipidomic screen, increased time-dependently in the palmitate-exposed islets. The proteomic screen identified matching changes in proteins involved in lipid biosynthesis indicating up-regulated cholesterol and lipid biosynthesis in the islets. Furthermore, proteins associated with immature secretory granules were decreased when palmitate exposure time was increased despite their high affinity for cholesterol. Proteins associated with mature secretory granules remained unchanged. Pathway analysis based on the protein and lipid expression profiles implicated autocrine effects of insulin in lipotoxicity. Taken together the study demonstrates that combining different omics approaches has potential in mapping of multiple simultaneous cellular events. However, it also shows that challenges exist for effectively combining lipidomics and proteomics in primary cells. Our findings provide insight into how saturated fatty acids contribute to islet cell dysfunction by affecting the granule maturation process and confirmation in human islets of some previous findings from rodent islet and cell-line studies.
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Affiliation(s)
- Kirsten Roomp
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-Belval, Luxembourg
- * E-mail:
| | | | - Domitille Schvartz
- Human Protein Sciences Department, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland
| | - Kumari Ubhayasekera
- Analytical Chemistry, Department of Chemistry and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Ernest Sargsyan
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Levon Manukyan
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Azazul Chowdhury
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Hannes Manell
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Venkata Satagopam
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-Belval, Luxembourg
| | | | - Reinhard Schneider
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Esch-Belval, Luxembourg
| | - Jonas Bergquist
- Analytical Chemistry, Department of Chemistry and Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Jean-Charles Sanchez
- Human Protein Sciences Department, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland
| | - Peter Bergsten
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
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Schvartz D, Couté Y, Sanchez JC. Quantitative proteomics reveals the link between minichromosome maintenance complex and glucose-induced proliferation of rat pancreatic INS-1E β-cells. J Proteomics 2014; 108:163-70. [DOI: 10.1016/j.jprot.2014.05.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 05/16/2014] [Accepted: 05/19/2014] [Indexed: 12/21/2022]
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Zufferey A, Schvartz D, Nolli S, Reny JL, Sanchez JC, Fontana P. Characterization of the platelet granule proteome: evidence of the presence of MHC1 in alpha-granules. J Proteomics 2014; 101:130-40. [PMID: 24549006 DOI: 10.1016/j.jprot.2014.02.008] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 01/28/2014] [Accepted: 02/04/2014] [Indexed: 10/25/2022]
Abstract
UNLABELLED In the present study, we performed an extensive qualitative characterization of the platelet granule proteome using subcellular fractionation followed by mass spectrometry analysis and functional annotation. Eight-hundred-and-twenty-seven proteins were identified, most of them being associated to granules and to the granule's secretory machinery. Functional pathway analysis revealed 30 pathways, including the major histocompatibility complex class 1 (MHC I) presenting antigen pathway. This pathway was of particular interest for its potential interrelation between platelets and the immune system. Key proteins belonging to this metabolic route such as β-2-microglobulin, 26S protease regulatory subunit 10B from the proteasome and proteins 1 and 2 of the transporter associated with antigen processing were shown to co-localize with von Willebrand factor in resting platelets and to be located on the plasma membrane when platelets were activated. Key proteins of the MHC1 antigen-presenting pathway are located in platelet alpha-granules. These results suggest a possible functional role of platelet granules in platelet-related immune modulation. BIOLOGICAL SIGNIFICANCE In this study, we described the largest dataset related to platelet granule proteins. We performed a functional pathway analysis that evidenced several expected granule-related pathways. We also highlighted the "Antigen processing and presentation" pathway that has drawn our attention. Using immunofluorescence technique, we confirmed the presence of several key proteins for antigen presentation in platelet granules. This study suggests a putative functional role of MHC1 and platelet granules in the immune modulation.
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Affiliation(s)
- Anne Zufferey
- Division of Angiology and Haemostasis, Department of Medical Specialisations, Faculty of Medicine and University Hospitals of Geneva, Geneva, Switzerland; Biomedical Proteomics Research Group, Department of Human Protein Sciences, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Geneva Platelet Group, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Domitille Schvartz
- Biomedical Proteomics Research Group, Department of Human Protein Sciences, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Séverine Nolli
- Division of Angiology and Haemostasis, Department of Medical Specialisations, Faculty of Medicine and University Hospitals of Geneva, Geneva, Switzerland; Biomedical Proteomics Research Group, Department of Human Protein Sciences, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Geneva Platelet Group, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Jean-Luc Reny
- Geneva Platelet Group, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Division of Internal Medicine, and Rehabilitation, Trois-Chêne Hospital, Faculty of Medicine and University Hospitals of Geneva, Geneva, Switzerland
| | - Jean-Charles Sanchez
- Biomedical Proteomics Research Group, Department of Human Protein Sciences, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Geneva Platelet Group, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Pierre Fontana
- Division of Angiology and Haemostasis, Department of Medical Specialisations, Faculty of Medicine and University Hospitals of Geneva, Geneva, Switzerland; Biomedical Proteomics Research Group, Department of Human Protein Sciences, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Geneva Platelet Group, Faculty of Medicine, University of Geneva, Geneva, Switzerland.
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Schvartz D, Brunner Y, Couté Y, Foti M, Wollheim CB, Sanchez JC. Improved characterization of the insulin secretory granule proteomes. J Proteomics 2012; 75:4620-31. [PMID: 22569486 DOI: 10.1016/j.jprot.2012.04.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 02/22/2012] [Accepted: 04/20/2012] [Indexed: 11/15/2022]
Abstract
Insulin secretory granules (ISGs) are pivotal organelles of pancreatic ß-cells and represent a key participant to glucose homeostasis. Indeed, insulin is packed and processed within these vesicles before its release by exocytosis. It is therefore crucial to acquire qualitative and quantitative data on the ISG proteome, in order to increase our knowledge on ISG biogenesis, maturation and exocytosis. Despites efforts made in the past years, the coverage of the ISG proteome is still incomplete and comprises many potential protein contaminants most likely coming from suboptimal sample preparations. We developed here a 3-step gradient purification procedure combined to Stable Isotope Labeling with Amino acids in Cell culture (SILAC) to further characterize the ISG protein content. Our results allowed to build three complementary proteomes containing 1/ proteins which are enriched in mature ISGs, 2/ proteins sharing multiple localizations including ISGs, and finally 3/ proteins sorted out from immature ISGs and/or co-purifying contaminants. As a proof of concept, the ProSAAS, a neuronal protein found in ISGs was further characterized and its granular localization proved. ProSAAS might represent a novel potential target allowing to better understand the defaults in insulin processing and secretion observed during type 2 diabetes progression. This article is part of a special issue entitled: Translational Proteomics.
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Affiliation(s)
- Domitille Schvartz
- Biomedical Proteomics Research Group, Department of Human Protein Sciences, University Medical Center, Geneva, Switzerland
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Schvartz D, Couté Y, Brunner Y, Wollheim CB, Sanchez JC. Modulation of neuronal pentraxin 1 expression in rat pancreatic β-cells submitted to chronic glucotoxic stress. Mol Cell Proteomics 2012; 11:244-54. [PMID: 22427704 DOI: 10.1074/mcp.m112.018051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Insulin secretory granules are β-cell vesicles dedicated to insulin processing, storage, and release. The secretion of insulin secretory granule content in response to an acute increase of glucose concentration is a highly regulated process allowing normal glycemic homeostasis. Type 2 diabetes is a metabolic disease characterized by chronic hyperglycemia. The consequent prolonged glucose exposure is known to exert deleterious effects on the function of various organs, notably impairment of insulin secretion by pancreatic β-cells and induction of apoptosis. It has also been described as modifying gene and protein expression in β-cells. Therefore, we hypothesized that a modulation of insulin secretory granule protein expression induced by chronic hyperglycemia may partially explain β-cell dysfunction. To identify the potential early molecular mechanisms underlying β-cell dysfunction during chronic hyperglycemia, we performed SILAC and mass spectrometry experiments to monitor changes in the insulin secretory granule proteome from INS-1E rat insulinoma β-cells cultivated either with 11 or 30 mm of glucose for 24 h. Fourteen proteins were found to be differentially expressed between these two conditions, and several of these proteins were not described before to be present in β-cells. Among them, neuronal pentraxin 1 was only described in neurons so far. Here we investigated its expression and intracellular localization in INS-1E cells. Furthermore, its overexpression in glucotoxic conditions was confirmed at the mRNA and protein levels. According to its role in hypoxia-ischemia-induced apoptosis described in neurons, this suggests that neuronal pentraxin 1 might be a new β-cell mediator in the AKT/GSK3 apoptotic pathway. In conclusion, the modification of specific β-cell pathways such as apoptosis and oxidative stress may partially explain the impairment of insulin secretion and β-cell failure, observed after prolonged exposure to high glucose concentrations.
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Affiliation(s)
- Domitille Schvartz
- Biomedical Proteomics Research Group, Department of Human Protein Sciences, University Medical Center, Geneva 1211, Switzerland
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Couté Y, Brunner Y, Schvartz D, Hernandez CÃ, Masselot A, Lisacek F, Wollheim CB, Sanchez JC. Early activation of the fatty acid metabolism pathway by chronic high glucose exposure in rat insulin secretory β-cells. Proteomics 2010; 10:59-71. [DOI: 10.1002/pmic.200900080] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abstract
Regulated secretory organelles are important subcellular structures of living cells that allow the release in the extracellular space of crucial compounds, such as hormones and neurotransmitters. Therefore, the regulation of biogenesis, trafficking, and exocytosis of regulated secretory organelles has been intensively studied during the last 30 years. However, due to the large number of different regulated secretory organelles, only a few of them have been specifically characterized. New insights into regulated secretory organelles open crucial perspectives for a better comprehension of the mechanisms that govern cell secretion. The combination of subcellular fractionation, protein separation, and mass spectrometry is also possible to study regulated secretory organelles at the proteome level. In this review, we present different strategies used to isolate regulated secretory organelles, separate their protein content, and identify the proteins by mass spectrometry. The biological significance of regulated secretory organelles-proteomic analysis is discussed as well.
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Affiliation(s)
- Yannick Brunner
- Biomedical Proteomics Research Group, University Medical Center, Geneva, Switzerland
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Brunner Y, Schvartz D, Priego-Capote F, Couté Y, Sanchez JC. Glucotoxicity and pancreatic proteomics. J Proteomics 2009; 71:576-91. [DOI: 10.1016/j.jprot.2008.10.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2008] [Revised: 09/29/2008] [Accepted: 10/18/2008] [Indexed: 02/02/2023]
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