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Ouvrard C, Metais A, Brigot E, Berthaud C, Pucelle N, Lacombe J, Hasty L, Chrétien F, Bielle F, Mokhtari K, Cazals‐Hatem D, Lhermitte B, Uro‐Coste E, Varlet P, Tauziède‐Espariat A. ETV4
Immunohistostaining is a sensitive and specific diagnostic biomarker for
CIC
‐rearranged sarcoma of the central nervous system. Histopathology 2022; 81:852-855. [DOI: 10.1111/his.14796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/23/2022] [Accepted: 09/12/2022] [Indexed: 11/30/2022]
Affiliation(s)
- C Ouvrard
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
| | - A Metais
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
- Université de Paris Paris France
- Institut de Psychiatrie et Neurosciences de Paris (IPNP), UMR S1266, INSERM, IMA‐BRAIN Paris France
| | - E Brigot
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
| | - C Berthaud
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
| | - N Pucelle
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
| | - J Lacombe
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
| | - L Hasty
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
| | - F Chrétien
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
- Université de Paris Paris France
| | - F Bielle
- Sorbonne Université, AP‐HP, Institut du Cerveau ‐ Paris Brain Institute ‐ ICM, Inserm, CNRS, Hôpitaux Universitaires La Pitié Salpêtrière ‐ Charles Foix, Service de Neuropathologie F‐75013 Paris France
| | - K Mokhtari
- Sorbonne Université, AP‐HP, Institut du Cerveau ‐ Paris Brain Institute ‐ ICM, Inserm, CNRS, Hôpitaux Universitaires La Pitié Salpêtrière ‐ Charles Foix, Service de Neuropathologie F‐75013 Paris France
| | - D Cazals‐Hatem
- Department of Pathology APHP University Hospital Beaujon Clichy France
| | - B Lhermitte
- Department of Pathology, Strasbourg Hospital Strasbourg France
| | - E Uro‐Coste
- Department of Pathology Toulouse University Hospital Toulouse France
- INSERM U1037, Cancer Research Center of Toulouse (CRCT), Toulouse France
- Université Paul Sabatier, Toulouse III Toulouse France
| | - P Varlet
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
- Université de Paris Paris France
- Institut de Psychiatrie et Neurosciences de Paris (IPNP), UMR S1266, INSERM, IMA‐BRAIN Paris France
| | - A Tauziède‐Espariat
- Department of Neuropathology, GHU Paris‐Psychiatrie et Neurosciences, Sainte‐Anne Hospital Paris France
- Université de Paris Paris France
- Institut de Psychiatrie et Neurosciences de Paris (IPNP), UMR S1266, INSERM, IMA‐BRAIN Paris France
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3
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Bagayoko S, Leon-Icaza SA, Pinilla M, Hessel A, Santoni K, Péricat D, Bordignon PJ, Moreau F, Eren E, Boyancé A, Naser E, Lefèvre L, Berrone C, Iakobachvili N, Metais A, Rombouts Y, Lugo-Villarino G, Coste A, Attrée I, Frank DW, Clevers H, Peters PJ, Cougoule C, Planès R, Meunier E. Host phospholipid peroxidation fuels ExoU-dependent cell necrosis and supports Pseudomonas aeruginosa-driven pathology. PLoS Pathog 2021; 17:e1009927. [PMID: 34516571 PMCID: PMC8460005 DOI: 10.1371/journal.ppat.1009927] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 09/23/2021] [Accepted: 08/29/2021] [Indexed: 11/20/2022] Open
Abstract
Regulated cell necrosis supports immune and anti-infectious strategies of the body; however, dysregulation of these processes drives pathological organ damage. Pseudomonas aeruginosa expresses a phospholipase, ExoU that triggers pathological host cell necrosis through a poorly characterized pathway. Here, we investigated the molecular and cellular mechanisms of ExoU-mediated necrosis. We show that cellular peroxidised phospholipids enhance ExoU phospholipase activity, which drives necrosis of immune and non-immune cells. Conversely, both the endogenous lipid peroxidation regulator GPX4 and the pharmacological inhibition of lipid peroxidation delay ExoU-dependent cell necrosis and improve bacterial elimination in vitro and in vivo. Our findings also pertain to the ExoU-related phospholipase from the bacterial pathogen Burkholderia thailandensis, suggesting that exploitation of peroxidised phospholipids might be a conserved virulence mechanism among various microbial phospholipases. Overall, our results identify an original lipid peroxidation-based virulence mechanism as a strong contributor of microbial phospholipase-driven pathology.
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Affiliation(s)
- Salimata Bagayoko
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Stephen Adonai Leon-Icaza
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Miriam Pinilla
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Audrey Hessel
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Karin Santoni
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - David Péricat
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Pierre-Jean Bordignon
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Flavie Moreau
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
- Level 3 Biosafety Animal Core facility, Anexplo platform, Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Elif Eren
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Aurélien Boyancé
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Emmanuelle Naser
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
- Cytometry & Imaging Core facility, Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Lise Lefèvre
- RESTORE institute, University of Toulouse, CNRS, Toulouse, France
| | - Céline Berrone
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
- Level 3 Biosafety Animal Core facility, Anexplo platform, Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Nino Iakobachvili
- Division of Nanoscopy, Maastricht Multimodal Molecular Imaging Institute, Maastricht University, Maastricht, The Netherlands
| | - Arnaud Metais
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Yoann Rombouts
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Geanncarlo Lugo-Villarino
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Agnès Coste
- RESTORE institute, University of Toulouse, CNRS, Toulouse, France
| | - Ina Attrée
- Univ. Grenoble Alpes, CNRS, CEA, IBS, Bacterial Pathogenesis and Cellular Responses, Grenoble, France
| | - Dara W. Frank
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - Hans Clevers
- Oncode Institute, Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences and University Medical Center, Utrecht, Netherlands
| | - Peter J. Peters
- Division of Nanoscopy, Maastricht Multimodal Molecular Imaging Institute, Maastricht University, Maastricht, The Netherlands
| | - Céline Cougoule
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Rémi Planès
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
| | - Etienne Meunier
- Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France
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4
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Spinner CA, Uttenweiler-Joseph S, Metais A, Stella A, Burlet-Schiltz O, Moog-Lutz C, Lamsoul I, Lutz PG. Substrates of the ASB2α E3 ubiquitin ligase in dendritic cells. Sci Rep 2015; 5:16269. [PMID: 26537633 PMCID: PMC4633680 DOI: 10.1038/srep16269] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 08/03/2015] [Accepted: 10/12/2015] [Indexed: 11/17/2022] Open
Abstract
Conventional dendritic cells (cDCs) comprise distinct populations with specialized immune functions that are mediators of innate and adaptive immune responses. Transcriptomic and proteomic approaches have been used so far to identify transcripts and proteins that are differentially expressed in these subsets to understand the respective functions of cDCs subsets. Here, we showed that the Cullin 5-RING E3 ubiquitin ligase (E3) ASB2α, by driving degradation of filamin A (FLNa) and filamin B (FLNb), is responsible for the difference in FLNa and FLNb abundance in the different spleen cDC subsets. Importantly, the ability of these cDC subsets to migrate correlates with the level of FLNa. Furthermore, our results strongly point to CD4 positive and double negative cDCs as distinct populations. Finally, we develop quantitative global proteomic approaches to identify ASB2α substrates in DCs using ASB2 conditional knockout mice. As component of the ubiquitin-proteasome system (UPS) are amenable to pharmacological manipulation, these approaches aimed to the identification of E3 substrates in physiological relevant settings could potentially lead to novel targets for therapeutic strategies.
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Affiliation(s)
- Camille A Spinner
- CNRS; IPBS (Institut de Pharmacologie et de Biologie Structurale); 205 route de Narbonne BP 64182, F-31077 Toulouse, France.,Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - Sandrine Uttenweiler-Joseph
- CNRS; IPBS (Institut de Pharmacologie et de Biologie Structurale); 205 route de Narbonne BP 64182, F-31077 Toulouse, France.,Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - Arnaud Metais
- CNRS; IPBS (Institut de Pharmacologie et de Biologie Structurale); 205 route de Narbonne BP 64182, F-31077 Toulouse, France.,Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - Alexandre Stella
- CNRS; IPBS (Institut de Pharmacologie et de Biologie Structurale); 205 route de Narbonne BP 64182, F-31077 Toulouse, France.,Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - Odile Burlet-Schiltz
- CNRS; IPBS (Institut de Pharmacologie et de Biologie Structurale); 205 route de Narbonne BP 64182, F-31077 Toulouse, France.,Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - Christel Moog-Lutz
- CNRS; IPBS (Institut de Pharmacologie et de Biologie Structurale); 205 route de Narbonne BP 64182, F-31077 Toulouse, France.,Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - Isabelle Lamsoul
- CNRS; IPBS (Institut de Pharmacologie et de Biologie Structurale); 205 route de Narbonne BP 64182, F-31077 Toulouse, France.,Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - Pierre G Lutz
- CNRS; IPBS (Institut de Pharmacologie et de Biologie Structurale); 205 route de Narbonne BP 64182, F-31077 Toulouse, France.,Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
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6
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Durant L, Metais A, Soulama-Mouze C, Genevard JM, Nassif X, Escaich S. Identification of candidates for a subunit vaccine against extraintestinal pathogenic Escherichia coli. Infect Immun 2006; 75:1916-25. [PMID: 17145948 PMCID: PMC1865706 DOI: 10.1128/iai.01269-06] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Extraintestinal pathogenic Escherichia coli (ExPEC) strains cause a large spectrum of infections. The majority of ExPEC strains are closely related to the B2 or the D phylogenetic group. The aim of our study was to develop a protein-based vaccine against these ExPEC strains. To this end, we identified ExPEC-specific genomic regions, using a comparative genome analysis, between the nonpathogenic E. coli strain K-12 MG1655 and ExPEC strains C5 (meningitis isolate) and CFT073 (urinary tract infection isolate). The analysis of these genomic regions allowed the selection of 40 open reading frames, which are conserved among B2/D clinical isolates and encode proteins with putative outer membrane localization. These genes were cloned, and recombinant proteins were purified and assessed as vaccine candidates. After immunization of BALB/c mice, five proteins induced a significant protective immunity against a lethal challenge with a clinical E. coli strain of the B2 group. In passive immunization assays, antigen-specific antibodies afforded protection to naive mice against a lethal challenge. Three of these antigens were related to iron acquisition metabolism, an important virulence factor of the ExPEC, and two corresponded to new, uncharacterized proteins. Due to the large number of genetic differences that exists between commensal and pathogenic strains of E. coli, our results demonstrate that it is possible to identify targets that elicit protective immune responses specific to those strains. The five protective antigens could constitute the basis for a preventive subunit vaccine against diseases caused by ExPEC strains.
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Affiliation(s)
- Lionel Durant
- Mutabilis SA, 102 route de Noisy, 93230 Romainville, France
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