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Culerier E, Togbe D, Maillet I, Le Bert M, Selkirk M, Horsnell W, Quesniaux V, Ryffel B. Erratum à «Les journées de recherche respiratoire (J2R) » [Rev. Mal. Respir. 39 (2022) 108–131]. Rev Mal Respir 2022. [DOI: 10.1016/j.rmr.2022.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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2
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Savigny F, Carignon S, Lacerda-Queiroz N, Huot-Marchand S, Kaya E, Ryffel B, Gombault A, Le Bert M, Couillin I, Riteau N. Protective role of the nucleic acid sensor STING in idiopathic pulmonary fibrosis. Rev Mal Respir 2022. [DOI: 10.1016/j.rmr.2022.02.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Culerier E, Togbe D, Maillet I, LeBert M, Selkirk M, Horsnell W, Quesniaux V, Ryffel B. Acetylcholine producing innate type 2 and 3 lymphoid cells promote protease driven allergic lung inflammation. Rev Mal Respir 2022. [DOI: 10.1016/j.rmr.2022.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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4
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Huot-Marchand S, Gombault A, Nascimento M, Panek C, Savigny F, Schneider P, Le Bert M, Riteau N, Ryffel B, Quesniaux V, Couillin I. B-Cell Activating Factor secreted by neutrophils is a critical player in lung inflammation to cigarette smoke exposure. Rev Mal Respir 2021. [DOI: 10.1016/j.rmr.2021.02.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Palomo J, Quesniaux VFJ, Togbe D, Reverchon F, Ryffel B. Unravelling the roles of innate lymphoid cells in cerebral malaria pathogenesis. Parasite Immunol 2019; 40. [PMID: 29117626 DOI: 10.1111/pim.12502] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 03/03/2017] [Accepted: 10/31/2017] [Indexed: 12/17/2022]
Abstract
Cerebral malaria (CM) is one complication of Plasmodium parasite infection that can lead to strong inflammatory immune responses in the central nervous system (CNS), accompanied by lung inflammation and anaemia. Here, we focus on the role of the innate immune response in experimental cerebral malaria (ECM) caused by blood-stage murine Plasmodium berghei ANKA infection. While T cells are important for ECM pathogenesis, the role of innate lymphoid cells (ILCs) is only emerging. The role of ILCs and non-lymphoid cells, such as neutrophils and platelets, contributing to the host immune response and leading to ECM and human cerebral malaria (HCM) is reviewed.
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Affiliation(s)
- J Palomo
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France.,Division of Rheumatology, Departments of Internal Medicine Specialties and of Pathology-Immunology, University of Geneva School of Medicine, Geneva, Switzerland
| | - V F J Quesniaux
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France
| | - D Togbe
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France.,Artimmune SAS, Orléans, France
| | - F Reverchon
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France
| | - B Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS, University of Orleans, Orleans-Cedex2, France.,IDM, Medical School, University of Cape Town, Cape Town, Republic of South Africa
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Couturier-Maillard A, Froux N, Piotet-Morin J, Michaudel C, Brault L, Le Bérichel J, Sénéchal A, Robinet P, Chenuet P, Jejou S, Dumoutier L, Renauld JC, Iovanna J, Huber S, Chamaillard M, Quesniaux VFJ, Sokol H, Ryffel B. Correction: Interleukin-22-deficiency and microbiota contribute to the exacerbation of Toxoplasma gondii-induced intestinal inflammation. Mucosal Immunol 2019; 12:290. [PMID: 30504789 DOI: 10.1038/s41385-018-0112-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The original version of this Article omitted the author Dr Mathias Chamaillard from the l'Institut de Pasteur, Lille, France. This has been corrected in both the PDF and HTML versions of the Article.
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Affiliation(s)
- A Couturier-Maillard
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - N Froux
- CNRS UPS44 -TAAM, Orléans, France
| | - J Piotet-Morin
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - C Michaudel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - L Brault
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - J Le Bérichel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | | | - P Robinet
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - P Chenuet
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - S Jejou
- Sorbonne Universités, UPMC Univ. Paris 06, École Normale Supérieure, PSL Research University, CNRS, INSERM, APHP, Laboratoire des Biomolécules (LBM), 27 rue de Chaligny, 75005, Paris, France
| | - L Dumoutier
- Ludwig Institute for Cancer Research, Université Catholique de Louvain, Brussels, Belgium
| | - J C Renauld
- Ludwig Institute for Cancer Research, Université Catholique de Louvain, Brussels, Belgium
| | - J Iovanna
- INSERM U1068, Centre de Recherche en Cancérologie de Marseille (CRCM), Aix-Marseille Université and Institut Paoli-Calmette, Parc Scientifique et Technologique de Luminy, CNRS UMR 7258, Marseille, France
| | - S Huber
- Medizinische Klinik und Poliklinik, Universitätsklinikum Hamburg-Eppendorf, Hamburg, 20246, Germany
| | | | - V F J Quesniaux
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - H Sokol
- Sorbonne Universités, UPMC Univ. Paris 06, École Normale Supérieure, PSL Research University, CNRS, INSERM, APHP, Laboratoire des Biomolécules (LBM), 27 rue de Chaligny, 75005, Paris, France.,Micalis Institute, Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, 78352, France.,Department of Gastroenterology, Saint Antoine Hospital, Assistance Publique-Hopitaux de Paris, UPMC, Paris, France
| | - B Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France.
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Toth A, Erdei J, Balogh E, Nyakundi B, Bányai E, Ryffel B, Paragh G, Cordero M, Jeney V. Induction of NLRP3 inflammasome activation by heme in human endothelial cells. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Couturier-Maillard A, Froux N, Piotet-Morin J, Michaudel C, Brault L, Le Bérichel J, Sénéchal A, Robinet P, Chenuet P, Jejou S, Dumoutier L, Renauld JC, Iovanna J, Huber S, Chamaillard M, Quesniaux V, Sokol H, Chamaillard M, Ryffel B. Interleukin-22-deficiency and microbiota contribute to the exacerbation of Toxoplasma gondii-induced intestinal inflammation. Mucosal Immunol 2018; 11:1181-1190. [PMID: 29728643 DOI: 10.1038/s41385-018-0005-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 01/04/2018] [Accepted: 01/09/2018] [Indexed: 02/04/2023]
Abstract
Upon oral infection with Toxoplasma gondii cysts (76 K strain) tachyzoites are released into the intestinal lumen and cross the epithelial barrier causing damage and acute intestinal inflammation in C57BL/6 (B6) mice. Here we investigated the role of microbiota and IL-22 in T.gondii-induced small intestinal inflammation. Oral T.gondii infection in B6 mice causes inflammation with IFNγ and IL-22 production. In IL-22-deficient mice, T.gondii infection augments the Th1 driven inflammation. Deficiency in either IL-22bp, the soluble IL-22 receptor or Reg3γ, an IL-22-dependent antimicrobial lectin/peptide, did not reduce inflammation. Under germ-free conditions, T.gondii-induced inflammation was reduced in correlation with parasite load. But intestinal inflammation is still present in germ-free mice, at low level, in the lamina propria, independently of IL-22 expression. Exacerbated intestinal inflammation driven by absence of IL-22 appears to be independent of IL-22 deficiency associated-dysbiosis as similar inflammation was observed after fecal transplantation of IL-22-/- or WT microbiota to germ-free-WT mice. Our results suggest cooperation between parasite and intestinal microbiota in small intestine inflammation development and endogenous IL-22 seems to exert a protective role independently of its effect on the microbiota. In conclusion, IL-22 participates in T.gondii induced acute small intestinal inflammation independently of microbiota and Reg3γ.
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Affiliation(s)
- A Couturier-Maillard
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - N Froux
- CNRS UPS44 -TAAM, Orléans, France
| | - J Piotet-Morin
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - C Michaudel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - L Brault
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - J Le Bérichel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | | | - P Robinet
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - P Chenuet
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - S Jejou
- Sorbonne Universités, UPMC Univ. Paris 06, École Normale Supérieure, PSL Research University, CNRS, INSERM, APHP, Laboratoire des Biomolécules (LBM), 27 rue de Chaligny, 75005, Paris, France
| | - L Dumoutier
- Ludwig Institute for Cancer Research, Université Catholique de Louvain, Brussels, Belgium
| | - J C Renauld
- Ludwig Institute for Cancer Research, Université Catholique de Louvain, Brussels, Belgium
| | - J Iovanna
- INSERM U1068, Centre de Recherche en Cancérologie de Marseille (CRCM), Aix-Marseille Université and Institut Paoli-Calmette, Parc Scientifique et Technologique de Luminy, CNRS UMR 7258, Marseille, France
| | - S Huber
- Medizinische Klinik und Poliklinik, Universitätsklinikum Hamburg-Eppendorf, Hamburg, 20246, Germany
| | | | - Vfj Quesniaux
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France
| | - H Sokol
- Sorbonne Universités, UPMC Univ. Paris 06, École Normale Supérieure, PSL Research University, CNRS, INSERM, APHP, Laboratoire des Biomolécules (LBM), 27 rue de Chaligny, 75005, Paris, France
- Micalis Institute, Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, 78352, France
- Department of Gastroenterology, Saint Antoine Hospital, Assistance Publique-Hopitaux de Paris, UPMC, Paris, France
| | - M Chamaillard
- Department of Gastroenterology, Saint Antoine Hospital, Assistance Publique-Hopitaux de Paris, UPMC, Paris, France
| | - B Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), CNRS and University of Orleans (UMR7355), Orléans, France.
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9
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Talbot J, Peres RS, Pinto LG, Oliveira RDR, Lima KA, Donate PB, Silva JR, Ryffel B, Cunha TM, Alves-Filho JC, Liew FY, Louzada-Junior P, de Queiroz Cunha F. Smoking-induced aggravation of experimental arthritis is dependent of aryl hydrocarbon receptor activation in Th17 cells. Arthritis Res Ther 2018; 20:119. [PMID: 29884199 PMCID: PMC5994132 DOI: 10.1186/s13075-018-1609-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [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: 01/24/2018] [Accepted: 04/26/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Epidemiologic studies have highlighted the association of environmental factors with the development and progression of autoimmune and chronic inflammatory diseases. Among the environmental factors, smoking has been associated with increased susceptibility and poor prognosis in rheumatoid arthritis (RA). However, the immune and molecular mechanism of smoking-induced arthritis aggravation remains unclear. The transcription factor aryl hydrocarbon receptor (AHR) regulates the generation of Th17 cells, CD4 T cells linked the development of autoimmune diseases. AHR is activated by organic compounds including polycyclic aromatic hydrocarbons (PAHs), which are environmental pollutants that are also present in cigarette smoke. In this study, we investigated the role of AHR activation in the aggravation of experiment arthritis induced by exposure to cigarette smoke. METHODS Mice were exposed to cigarette smoke during the developmental phase of antigen-induced arthritis and collagen-induced arthritis to evaluate the effects of smoking on disease development. Aggravation of articular inflammation was assessed by measuring neutrophil migration to the joints, increase in articular hyperalgesia and changes in the frequencies of Th17 cells. In vitro studies were performed to evaluate the direct effects of cigarette smoke and PAH on Th17 differentiation. We also used mice genetically deficient for AHR (Ahr KO) and IL-17Ra (Il17ra KO) to determine the in vivo mechanism of smoking-induced arthritis aggravation. RESULTS We found that smoking induces arthritis aggravation and increase in the frequencies of Th17 cells. The absence of IL-17 signaling (Il17ra KO) conferred protection to smoking-induced arthritis aggravation. Moreover, in vitro experiments showed that cigarette smoke can directly increase Th17 differentiation of T cells by inducing AHR activation. Indeed, Ahr KO mice were protected from cigarette smoke-induced arthritis aggravation and did not display increase in TH17 frequencies, suggesting that AHR activation is an important mechanism for cigarette smoke effects on arthritis. Finally, we demonstrate that PAHs are also able to induce arthritis aggravation. CONCLUSIONS Our data demonstrate that the disease-exacerbating effects of cigarette smoking are AHR dependent and environmental pollutants with AHR agonist activity can induce arthritis aggravation by directly enhancing Th17 cell development.
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MESH Headings
- Animals
- Arthritis, Experimental/etiology
- Arthritis, Experimental/genetics
- Arthritis, Experimental/metabolism
- Azo Compounds/pharmacology
- Male
- Mice, Inbred C57BL
- Mice, Inbred DBA
- Mice, Knockout
- Pyrazoles/pharmacology
- Receptors, Aryl Hydrocarbon/antagonists & inhibitors
- Receptors, Aryl Hydrocarbon/genetics
- Receptors, Aryl Hydrocarbon/metabolism
- Receptors, Interleukin-17/genetics
- Receptors, Interleukin-17/metabolism
- Smoke/adverse effects
- Th17 Cells/metabolism
- Nicotiana/chemistry
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Affiliation(s)
- Jhimmy Talbot
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Av. Bandeirantes, 3900, Ribeirao Preto, SP, 14049900, Brazil
| | - Raphael S Peres
- Department of Immunology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Larissa G Pinto
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Av. Bandeirantes, 3900, Ribeirao Preto, SP, 14049900, Brazil
| | - Rene D R Oliveira
- Division of Clinical Immunology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Kalil A Lima
- Department of Immunology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Paula B Donate
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Av. Bandeirantes, 3900, Ribeirao Preto, SP, 14049900, Brazil
| | - Jaqueline R Silva
- Department of Immunology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Bernard Ryffel
- Université Orleans and Centre National de la Recherche Scientifique, Molecular Immunology, UMR7355, INEM, Orleans, France
- Institute of Infectious Disease and Molecular Medicine, UCT, Cape Town, South Africa
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Av. Bandeirantes, 3900, Ribeirao Preto, SP, 14049900, Brazil
| | - José C Alves-Filho
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Av. Bandeirantes, 3900, Ribeirao Preto, SP, 14049900, Brazil
| | - Foo Y Liew
- Division of Immunology, Infection and Inflammation, Glasgow Biomedical Research Centre, University of Glasgow, Glasgow, G12 8TA, UK.
- School of Biology and Basic Medical Sciences, Soochow University, Suzhou, 215006, China.
| | - Paulo Louzada-Junior
- Division of Clinical Immunology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil.
| | - Fernando de Queiroz Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Av. Bandeirantes, 3900, Ribeirao Preto, SP, 14049900, Brazil.
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10
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Radulovic K, Normand S, Rehman A, Delanoye-Crespin A, Chatagnon J, Delacre M, Waldschmitt N, Poulin LF, Iovanna J, Ryffel B, Rosenstiel P, Chamaillard M. A dietary flavone confers communicable protection against colitis through NLRP6 signaling independently of inflammasome activation. Mucosal Immunol 2018; 11:811-819. [PMID: 29139477 DOI: 10.1038/mi.2017.87] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 09/05/2017] [Indexed: 02/04/2023]
Abstract
Flavones represent a class of polyphenols that are found in many plant-derived food sources. Herein, we provide evidence that the anti-inflammatory and antiproliferative effect of the flavone apigenin relies on the regulation of the gut microbiota by the NOD-like receptor family pyrin domain containing 6 (Nlrp6). When challenged by dextran sulfate sodium (DSS) in drinking water, mice were protected against colitis upon cohousing with apigenin-treated animals. In contrast, the protective effect was lost in the absence of Nlrp6. Sequencing of the 16S ribosomal RNA gene revealed a shift in the composition of the gut microbiota in apigenin-treated mice that was not observed in the absence of Nlrp6. Equally important, we find that the antiproliferative effect of apigenin was dominantly transmitted after cohousing, while being compromised in Nlrp6-deficient mice. In contrast, the symptoms of colitis were alleviated upon apigenin administration even in the absence of either caspase-1/11 or Asc. Collectively, these data indicate that apigenin modulated an inflammasome-independent mechanism by which Nlrp6 reprograms the gut microbiota for protecting mice against colitis. Our study highlights a modulation of the Nlrp6 signaling pathway by a prominent constituent of the human diet that may point toward improved ways to treat inflammatory bowel diseases.
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Affiliation(s)
- K Radulovic
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France.,University Hospital Basel and University of Basel, Department of Biomedicine, Basel, Switzerland
| | - S Normand
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - A Rehman
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - A Delanoye-Crespin
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - J Chatagnon
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - M Delacre
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - N Waldschmitt
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - L F Poulin
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
| | - J Iovanna
- Centre de Recherche en Cancérologie de Marseille, Inserm U1068, CNRS UMR 7258, Aix-Marseille Université and Institut Paoli-Calmettes, Parc Scientifique et Technologique de Luminy, Marseille, France
| | - B Ryffel
- CNRS, UMR7355; Experimental and Molecular Immunology and Neurogenetics, University of Orleans, France and IDM University of Cape Town, Orleans, France
| | - P Rosenstiel
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - M Chamaillard
- Univ. Lille, CNRS, Inserm, CHRU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Centre d'Infection et d'Immunité de Lille, Lille, France
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11
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Di Domizio J, Belkhodja C, Chenuet P, Murray T, Demaria O, Conrad C, Speiser D, Ryffel B, Gilliet M. 997 Skin commensal bacteria drive the wound healing response by initiating pDC recruitment and activation in injured skin. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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12
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Hassane M, Demon D, Soulard D, Fontaine J, Keller LE, Patin EC, Porte R, Prinz I, Ryffel B, Kadioglu A, Veening JW, Sirard JC, Faveeuw C, Lamkanfi M, Trottein F, Paget C. Neutrophilic NLRP3 inflammasome-dependent IL-1β secretion regulates the γδT17 cell response in respiratory bacterial infections. Mucosal Immunol 2017; 10:1056-1068. [PMID: 28051086 DOI: 10.1038/mi.2016.113] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 10/24/2016] [Indexed: 02/04/2023]
Abstract
Traditionally regarded as simple foot soldiers of the innate immune response limited to the eradication of pathogens, neutrophils recently emerged as more complex cells endowed with a set of immunoregulatory functions. Using a model of invasive pneumococcal disease, we highlighted an unexpected key role for neutrophils as accessory cells in innate interleukin (IL)-17A production by lung resident Vγ6Vδ1+ T cells via nucleotide-binding oligomerization domain receptor, pyrin-containing 3 (NLRP3) inflammasome-dependent IL-1β secretion. In vivo activation of the NLRP3 inflammasome in neutrophils required both host-derived and bacterial-derived signals. Elaborately, it relies on (i) alveolar macrophage-secreted TNF-α for priming and (ii) subsequent exposure to bacterial pneumolysin for activation. Interestingly, this mechanism can be translated to human neutrophils. Our work revealed the cellular and molecular dynamic events leading to γδT17 cell activation, and highlighted for the first time the existence of a fully functional NLRP3 inflammasome in lung neutrophils. This immune axis thus regulates the development of a protective host response to respiratory bacterial infections.
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Affiliation(s)
- M Hassane
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France.,Laboratoire Microbiologie Santé et Environnement, Ecole doctorale en Sciences et Technologies/ Faculté de Santé Publique, Université Libanaise, Tripoli, Liban
| | - D Demon
- Inflammation Research Center, VIB, Zwijnaarde, Belgium.,Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - D Soulard
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - J Fontaine
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - L E Keller
- Molecular Genetics Group, Groningen Biomolecular Sciences and Biotechnology Institute, Centre for Synthetic Biology, University of Groningen, Groningen, The Netherlands
| | - E C Patin
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - R Porte
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - I Prinz
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - B Ryffel
- CNRS, UMR7355, Experimental and Molecular Immunology and Neurogenetics, University, Orléans, France and IDM, University of Cape Town, RSA
| | - A Kadioglu
- Department of Clinical Infection, Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
| | - J-W Veening
- Molecular Genetics Group, Groningen Biomolecular Sciences and Biotechnology Institute, Centre for Synthetic Biology, University of Groningen, Groningen, The Netherlands
| | - J-C Sirard
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - C Faveeuw
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - M Lamkanfi
- Inflammation Research Center, VIB, Zwijnaarde, Belgium.,Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - F Trottein
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
| | - C Paget
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 8204-CIIL-Center for Infection and Immunity of Lille, Lille, France
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13
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Mascarell L, Airouche S, Berjont N, Gary C, Gueguen C, Fourcade G, Bellier B, Togbe D, Ryffel B, Klatzmann D, Baron-Bodo V, Moingeon P. The regulatory dendritic cell marker C1q is a potent inhibitor of allergic inflammation. Mucosal Immunol 2017; 10:695-704. [PMID: 27731323 DOI: 10.1038/mi.2016.87] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 08/30/2016] [Indexed: 02/04/2023]
Abstract
The complement subunit C1q was recently identified as a marker for monocyte-derived regulatory dendritic cells supporting the differentiation of interleukin (IL)-10-secreting CD4+ T cells with a suppressive activity. Furthermore, C1q expression is upregulated in peripheral blood mononuclear cells of allergic patients in the course of successful allergen immunotherapy. Herein, we investigated a potential direct role of C1q in downregulating allergic inflammation. In mice with ovalbumin (OVA) or birch pollen (BP)-induced allergic asthma, C1q is as efficacious as dexamethasone to reduce both airway hyperresponsiveness (AHR), eosinophil, and ILC2 infiltrates in bronchoalveolar lavages, as well as allergen-specific T helper 2 cells in the lungs. Administration of C1q does not expand IL-10+/Foxp3+ regulatory T cells in the lungs, spleen, or in the blood. Depletion of plasmacytoid dendritic cells (pDCs) abrogates the capacity of C1q to reduce AHR and eosinophilic infiltrates in OVA-sensitized mice. Also C1q treatment inhibits the activation of human and mouse pDCs by CpGs, thereby demonstrating a critical role for pDCs in the anti-inflammatory activity of C1q. We conclude that regulatory dendritic cells can mediate a potent direct anti-inflammatory activity via the expression and/or secretion of molecules such as C1q, independently of their capacity to expand the pool of regulatory T cells.
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Affiliation(s)
- L Mascarell
- Research Department, Stallergenes Greer, Antony, France
| | - S Airouche
- Research Department, Stallergenes Greer, Antony, France
| | - N Berjont
- Research Department, Stallergenes Greer, Antony, France
| | - C Gary
- Research Department, Stallergenes Greer, Antony, France.,CEA, Fontenay-aux-roses, France
| | - C Gueguen
- Research Department, Stallergenes Greer, Antony, France
| | - G Fourcade
- CNRS UMR7211 & INSERM U959, Hôpital Pitié-Salpêtrière, Paris, France
| | - B Bellier
- CNRS UMR7211 & INSERM U959, Hôpital Pitié-Salpêtrière, Paris, France
| | - D Togbe
- Artimmune SAS, Orléans, France
| | - B Ryffel
- CNRS UMR 7355-University of Orléans, Orléans, France
| | - D Klatzmann
- CNRS UMR7211 & INSERM U959, Hôpital Pitié-Salpêtrière, Paris, France
| | - V Baron-Bodo
- Research Department, Stallergenes Greer, Antony, France
| | - P Moingeon
- Research Department, Stallergenes Greer, Antony, France
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14
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Gaignage M, Marillier RG, Uyttenhove C, Dauguet N, Saxena A, Ryffel B, Michiels T, Coutelier JP, Van Snick J. Mouse nidovirus LDV infection alleviates graft versus host disease and induces type I IFN-dependent inhibition of dendritic cells and allo-responsive T cells. Immun Inflamm Dis 2017; 5:200-213. [PMID: 28474504 PMCID: PMC5418140 DOI: 10.1002/iid3.157] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/20/2017] [Accepted: 02/08/2017] [Indexed: 11/09/2022]
Abstract
Introduction Viruses have developed multiple mechanisms to alter immune reactions. In 1969, it was reported that lactate dehydrogenase‐elevating virus (LDV), a single stranded positive sense mouse nidovirus, delays skin allograft rejection and inhibits spleen alterations in graft versus host disease (GVHD). As the underlying mechanisms have remained unresolved and given the need for new therapies of this disease, we reassessed the effects of the virus on GVHD and tried to uncover its mode of action. Methods GVHD was induced by transfer of parent (B6) spleen cells to non‐infected or LDV‐infected B6D2F1 recipients. In vitro mixed‐lymhocyte culture (MLC) reactions were used to test the effects of the virus on antigen‐presenting cells (APC) and responder T cells. Results LDV infection resulted in a threefold increase in survival rate with reduced weight loss and liver inflammation but with the establishment of permanent chimerism that correlated with decreased interleukine (IL)‐27 and interferon (IFN)γ plasma levels. Infected mice showed a transient elimination of splenic CD11b+ and CD8α+ conventional dendritic cells (cDCs) required for allogeneic CD4 and CD8 T cell responses in vitro. This drop of APC numbers was not observed with APCs derived from toll‐like receptor (TLR)7‐deficient mice. A second effect of the virus was a decreased T cell proliferation and IFNγ production during MLC without detectable changes in Foxp3+ regulatory T cell (Tregs) numbers. Both cDC and responder T cell inhibition were type I IFN dependent. Although the suppressive effects were very transient, the GVHD inhibition was long‐lasting. Conclusion A type I IFN‐dependent suppression of DC and T cells just after donor spleen cell transplantation induces permanent chimerism and donor cell implantation in a parent to F1 spleen cell transplantation model. If this procedure can be extended to full allogeneic bone marrow transplantation, it could open new therapeutic perspectives for hematopoietic stem cell transplantation (HSCT).
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Affiliation(s)
- Mélanie Gaignage
- de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Reece G Marillier
- de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | | | - Nicolas Dauguet
- de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Anubha Saxena
- de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Bernard Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), University of Orleans, Orleans, France.,Institute of Infectious Disease and Molecular Medicine, RSA, University of Cape Town, Cape Town, South Africa
| | - Thomas Michiels
- de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | | | - Jacques Van Snick
- de Duve Institute, Université Catholique de Louvain, Brussels, Belgium.,Ludwig Cancer Research, Brussels Branch, Brussels, Belgium
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15
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Abstract
Innate immunity initiates protection of the host organism against invasion of micro-organisms by specific recognition mechanisms. This article reviews the dual role of LBP/CD14 in innate immunity, focusing mostly on experiments performed in mice by the authors. LPS induces uncontrolled pro-inflammatory response that kills the host and is LBP- and CD14-dependent, as neutralization of LBP and CD14 prevents lethal shock. However, surprisingly, the synthetic Pam3CysSerLys4 bacterial lipoprotein from Escherichia coli (BLP), which is well tolerated in mice, kills the mice upon LBP or CD14 blockade. Furthermore, after blockade of LBP and CD14, the mice succumb to a challenge with virulent Klebsiella pneumoniae or Salmonella typhimurium. Therefore, host responses to Gram-negative bacteria are not identical to that of LPS or BLP. When the host is in the presence of virulent Gram-negative bacteria, the invading pathogens must be held in check by the innate immune system until a specific immune response is mounted. Under these conditions, LBP, CD14, and likely Toll-like receptors (TLRs) are a prerequisite to trigger a pro-inflammatory response of macrophages, which is crucial for keeping an infection under control. These studies indicate that we are very far from understanding how the innate system works and more work needs to be done concerning LBP, CD14 or TLRs. Therefore, caution should be the rule about the use of therapeutic approaches to block the pro-inflammatory response in Gram-negative infections.
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Affiliation(s)
| | - Roger Lauener
- Division of Immunology, Kinderspital, Zürich, Switzerland
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16
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Hedinger C, Ryffel B, Schlatter C, Würgler E, Zinkernagel R. Gerhard Zbinden, M.D. 1924-1993. Toxicol Pathol 2016. [DOI: 10.1177/019262339302100619] [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] [Indexed: 11/16/2022]
Affiliation(s)
- Ch. Hedinger
- Department of Pathology and Institute of Toxicology University of Ziirich and Eidg. Techn. Hochschule. Ziirich Switzerland
| | - B. Ryffel
- Department of Pathology and Institute of Toxicology University of Ziirich and Eidg. Techn. Hochschule. Ziirich Switzerland
| | - C.H. Schlatter
- Department of Pathology and Institute of Toxicology University of Ziirich and Eidg. Techn. Hochschule. Ziirich Switzerland
| | - E. Würgler
- Department of Pathology and Institute of Toxicology University of Ziirich and Eidg. Techn. Hochschule. Ziirich Switzerland
| | - R.M. Zinkernagel
- Department of Pathology and Institute of Toxicology University of Ziirich and Eidg. Techn. Hochschule. Ziirich Switzerland
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17
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Chiazza F, Couturier-Maillard A, Benetti E, Mastrocola R, Nigro D, Cutrin JC, Serpe L, Aragno M, Fantozzi R, Ryffel B, Thiemermann C, Collino M. Targeting the NLRP3 Inflammasome to Reduce Diet-Induced Metabolic Abnormalities in Mice. Mol Med 2016; 21:1025-1037. [PMID: 26623925 DOI: 10.2119/molmed.2015.00104] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 11/23/2015] [Indexed: 01/17/2023] Open
Abstract
Although the molecular links underlying the causative relationship between chronic low-grade inflammation and insulin resistance are not completely understood, compelling evidence suggests a pivotal role of the nucleotide-binding oligomerization domain (NOD)-like receptor pyrin domain containing 3 (NLRP3) inflammasome. Here we tested the hypothesis that either a selective pharmacological inhibition or a genetic downregulation of the NLRP3 inflammasome results in reduction of the diet-induced metabolic alterations. Male C57/BL6 wild-type mice and NLRP3-/- littermates were fed control diet or high-fat, high-fructose diet (HD). A subgroup of HD-fed wild-type mice was treated with the NLRP3 inflammasome inhibitor BAY 11-7082 (3 mg/kg intraperitoneally [IP]). HD feeding increased plasma and hepatic lipids and impaired glucose homeostasis and renal function. Renal and hepatic injury was associated with robust increases in profibrogenic markers, while only minimal fibrosis was recorded. None of these metabolic abnormalities were detected in HD-fed NLRP3-/- mice, and they were dramatically reduced in HD-mice treated with the NLRP3 inflammasome inhibitor. BAY 11-7082 also attenuated the diet-induced increase in NLRP3 inflammasome expression, resulting in inhibition of caspase-1 activation and interleukin (IL)-1β and IL-18 production (in liver and kidney). Interestingly, BAY 11-7082, but not gene silencing, inhibited nuclear factor (NF)-κB nuclear translocation. Overall, these results demonstrate that the selective pharmacological modulation of the NLRP3 inflammasome attenuates the metabolic abnormalities and the related organ injury/dysfunction caused by chronic exposure to HD, with effects similar to those obtained by NLRP3 gene silencing.
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Affiliation(s)
- Fausto Chiazza
- Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Turin, Italy
| | - Aurélie Couturier-Maillard
- CNRS, UMR7355 INEM, Immunologie et Neurogénétique Expérimentales et Moléculaires, University of Orléans, Orléans, France
| | - Elisa Benetti
- Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Turin, Italy
| | - Raffaella Mastrocola
- Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Turin, Italy
| | - Debora Nigro
- Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Turin, Italy
| | - Juan C Cutrin
- Dipartimento di Biotecnologie Molecolari e Scienze per la Salute, Università di Torino, Turin, Italy.,ININCA-CONICET, Buenos Aires, Argentina
| | - Loredana Serpe
- Dipartimento di Scienza e Tecnologia del Farmaco, Universià di Torino, Turin, Italy
| | - Manuela Aragno
- Dipartimento di Scienze Cliniche e Biologiche, Università di Torino, Turin, Italy
| | - Roberto Fantozzi
- Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Turin, Italy
| | - Bernard Ryffel
- CNRS, UMR7355 INEM, Immunologie et Neurogénétique Expérimentales et Moléculaires, University of Orléans, Orléans, France
| | - Christoph Thiemermann
- Queen Mary University of London, Centre for Translational Medicine and Therapeutics, William Harvey Research Institute, Barts, and the London School of Medicine and Dentistry, London, United Kingdom
| | - Massimo Collino
- Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Turin, Italy
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18
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Cnops J, De Trez C, Bulte D, Radwanska M, Ryffel B, Magez S. IFN-γ mediates early B-cell loss in experimental African trypanosomosis. Parasite Immunol 2015; 37:479-84. [PMID: 26079128 DOI: 10.1111/pim.12208] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 06/08/2015] [Indexed: 12/26/2022]
Abstract
African trypanosomes infect humans and animals throughout the African continent. These parasites maintain chronic infections by various immune evasion strategies. While antigenic variation of their surface coat is the most studied strategy linked to evading the host humoral response, African trypanosomes also induce impaired B-cell lymphopoiesis, the destruction of the splenic B-cell compartment and abrogation of protective memory responses. Here we investigate the mechanism of follicular B-cell destruction. We show that during infection follicular B cells undergo apoptosis, correlating to enhanced Fas death receptor surface expression. Investigation of various type 1 cytokine knockout mice indicates a crucial role of IFN-γ in the early onset of FoB cell destruction. Indeed, both IFN-γ(-/-) and IFN-γR(-/-) mice are protected from trypanosomosis-associated FoB cell depletion, exhibiting an inhibition of B-cell apoptosis as well as a reduced activation of FoB cells during the first week post-infection. The data presented herein offer new insights into B-cell dysfunctioning during experimental African trypanosome infections.
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Affiliation(s)
- J Cnops
- Laboratory for Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Department of Structural Biology SBRC, VIB, Brussels, Belgium
| | - C De Trez
- Laboratory for Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Department of Structural Biology SBRC, VIB, Brussels, Belgium
| | - D Bulte
- Laboratory for Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Department of Structural Biology SBRC, VIB, Brussels, Belgium
| | - M Radwanska
- Ghent University Global Campus, Incheon, South Korea
| | - B Ryffel
- Experimental and Molecular Immunology and Neurogenetics, UMR 7355 CNRS-University of Orleans and IDM, University of Cape Town, Cape Town, South Africa
| | - S Magez
- Laboratory for Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, Belgium
- Department of Structural Biology SBRC, VIB, Brussels, Belgium
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19
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20
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Mihatsch MJ, Thiel G, Ryffel B. Brief review of the morphology of ciclosporin nephropathy. Contrib Nephrol 2015; 55:136-41. [PMID: 3549146 DOI: 10.1159/000413413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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21
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Belmellat N, Faunonnier L, Ryffel B, Boissier MC, Assier E. A5.11 Vaccination against TNF and side effects in listeriainfection model. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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22
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Parpaleix A, Houssaini A, Latiri M, Abid S, Wan F, Amsellem V, Ryffel B, Marcos E, Couillin I, Adnot S. Involvement of interleukin-1 receptor (IL1R1) and myeloid differentiation primary response gene 88 (MyD88) signaling in pulmonary hypertension (PH). Rev Mal Respir 2015. [DOI: 10.1016/j.rmr.2015.02.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Rabolli V, Badissi AA, Devosse R, Uwambayinema F, Yakoub Y, Palmai-Pallag M, Lebrun A, De Gussem V, Couillin I, Ryffel B, Marbaix E, Lison D, Huaux F. The alarmin IL-1α is a master cytokine in acute lung inflammation induced by silica micro- and nanoparticles. Part Fibre Toxicol 2014; 11:69. [PMID: 25497724 PMCID: PMC4279463 DOI: 10.1186/s12989-014-0069-x] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [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: 07/01/2014] [Accepted: 11/21/2014] [Indexed: 02/03/2023] Open
Abstract
Background Inflammasome-activated IL-1β plays a major role in lung neutrophilic inflammation induced by inhaled silica. However, the exact mechanisms that contribute to the initial production of precursor IL-1β (pro-IL-1β) are still unclear. Here, we assessed the implication of alarmins (IL-1α, IL-33 and HMGB1) in the lung response to silica particles and found that IL-1α is a master cytokine that regulates IL-1β expression. Methods Pro- and mature IL-1β as well as alarmins were assessed by ELISA, Western Blot or qRT-PCR in macrophage cultures and in mouse lung following nano- and micrometric silica exposure. Implication of these immune mediators in the establishment of lung inflammatory responses to silica was investigated in knock-out mice or after antibody blockade by evaluating pulmonary neutrophil counts, CXCR2 expression and degree of histological injury. Results We found that the early release of IL-1α and IL-33, but not HMGB1 in alveolar space preceded the lung expression of pro-IL-1β and neutrophilic inflammation in silica-treated mice. In vitro, the production of pro-IL-1β by alveolar macrophages was significantly induced by recombinant IL-1α but not by IL-33. Neutralization or deletion of IL-1α reduced IL-1β production and neutrophil accumulation after silica in mice. Finally, IL-1α released by J774 macrophages after in vitro exposure to a range of micro- and nanoparticles of silica was correlated with the degree of lung inflammation induced in vivo by these particles. Conclusions We demonstrated that in response to silica exposure, IL-1α is rapidly released from pre-existing stocks in alveolar macrophages and promotes subsequent lung inflammation through the stimulation of IL-1β production. Moreover, we demonstrated that in vitro IL-1α release from macrophages can be used to predict the acute inflammogenic activity of silica micro- and nanoparticles. Electronic supplementary material The online version of this article (doi:10.1186/s12989-014-0069-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Virginie Rabolli
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium.
| | - Anissa Alami Badissi
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium.
| | - Raynal Devosse
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium.
| | - Francine Uwambayinema
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium.
| | - Yousof Yakoub
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium.
| | - Mihaly Palmai-Pallag
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium.
| | - Astrid Lebrun
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium.
| | - Valentin De Gussem
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium.
| | - Isabelle Couillin
- University of Orléans, CNRS, UMR7355, INEM, Transgenose Institute, Orléans, France.
| | - Bernard Ryffel
- University of Orléans, CNRS, UMR7355, INEM, Transgenose Institute, Orléans, France.
| | - Etienne Marbaix
- de Duve Institute, Université catholique de Louvain, Brussels, Belgium.
| | - Dominique Lison
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium.
| | - François Huaux
- Louvain centre for Toxicology and Applied Pharmacology (LTAP), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain, Brussels, Belgium. .,Louvain centre for Toxicology and Applied Pharmacology (LTAP), Université catholique de Louvain (UCL), Avenue Mounier 52, B1.52.12, 1200, Brussels, Belgium.
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24
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Dadaglio G, Fayolle C, Zhang X, Ryffel B, Oberkampf M, Felix T, Hervas-Stubbs S, Osicka R, Sebo P, Ladant D, Leclerc C. Antigen targeting to CD11b+ dendritic cells in association with TLR4/TRIF signaling promotes strong CD8+ T cell responses. J Immunol 2014; 193:1787-98. [PMID: 25024388 DOI: 10.4049/jimmunol.1302974] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Deciphering the mechanisms that allow the induction of strong immune responses is crucial to developing efficient vaccines against infectious diseases and cancer. Based on the discovery that the adenylate cyclase from Bordetella pertussis binds to the CD11b/CD18 integrin, we developed a highly efficient detoxified adenylate cyclase-based vector (CyaA) capable of delivering a large variety of Ags to the APC. This vector allows the induction of protective and therapeutic immunity against viral and tumoral challenges as well as against transplanted tumors in the absence of any added adjuvant. Two therapeutic vaccine candidates against human papilloma viruses and melanoma have been developed recently, based on the CyaA vector, and are currently in clinical trials. We took advantage of one of these highly purified vaccines, produced under good manufacturing practice-like conditions, to decipher the mechanisms by which CyaA induces immune responses. In this study, we demonstrate that CyaA binds both human and mouse CD11b(+) dendritic cells (DCs) and induces their maturation, as shown by the upregulation of costimulatory and MHC molecules and the production of proinflammatory cytokines. Importantly, we show that DCs sense CyaA through the TLR4/Toll/IL-1R domain-containing adapter-inducing IFN-β pathway, independent of the presence of LPS. These findings show that CyaA possesses the intrinsic ability to not only target DCs but also to activate them, leading to the induction of strong immune responses. Overall, this study demonstrates that Ag delivery to CD11b(+) DCs in association with TLR4/Toll/IL-1R domain-containing adapter-inducing IFN-β activation is an efficient strategy to promote strong specific CD8(+) T cell responses.
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Affiliation(s)
- Gilles Dadaglio
- Institut Pasteur, Unité de Régulation Immunitaire et Vaccinologie, Paris F-75015, France; INSERM, U1041, Paris F-75015, France;
| | - Catherine Fayolle
- Institut Pasteur, Unité de Régulation Immunitaire et Vaccinologie, Paris F-75015, France; INSERM, U1041, Paris F-75015, France
| | - Xiaoming Zhang
- Institut Pasteur, Unité de Régulation Immunitaire et Vaccinologie, Paris F-75015, France; INSERM, U1041, Paris F-75015, France
| | - Bernard Ryffel
- Unité Mixte de Recherche 7355, Université d'Orléans-Centre National de la Recherche Scientifique, Laboratoire Immunologie et Neurogénétique Expérimentales et Moléculaires, Orléans 45071, France
| | - Marine Oberkampf
- Institut Pasteur, Unité de Régulation Immunitaire et Vaccinologie, Paris F-75015, France; INSERM, U1041, Paris F-75015, France
| | - Tristan Felix
- Institut Pasteur, Unité de Régulation Immunitaire et Vaccinologie, Paris F-75015, France; INSERM, U1041, Paris F-75015, France
| | - Sandra Hervas-Stubbs
- Division of Gene Therapy and Hepatology, Centre for Applied Medical Research, University of Navarra, Pamplona 31008, Spain
| | - Radim Osicka
- Institute of Microbiology of the Academy of Sciences of the Czech Republic, Verejna Vyzkumna Instituce, Videnska 1083, 142 20 Prague, Czech Republic
| | - Peter Sebo
- Institute of Microbiology of the Academy of Sciences of the Czech Republic, Verejna Vyzkumna Instituce, Videnska 1083, 142 20 Prague, Czech Republic
| | - Daniel Ladant
- Institut Pasteur, Unité de Biochimie des Interactions Macromoléculaires, Paris F-75015, France; and Centre National de la Recherche Scientifique, Unité Mixte de Recherche 3528, Paris F-75015, France
| | - Claude Leclerc
- Institut Pasteur, Unité de Régulation Immunitaire et Vaccinologie, Paris F-75015, France; INSERM, U1041, Paris F-75015, France;
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Paris I, Charreau S, Jegou J, Guignouard E, Garnier M, Burucoa C, Favot-Laforge L, Huguier V, Bernard F, Ryffel B, Morel F, Lecron J. Rôle majeur des cytokines Th17 dans le retard de cicatrisation des plaies infectées. Ann Dermatol Venereol 2013. [DOI: 10.1016/j.annder.2013.09.581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Madeira MFM, Queiroz-Junior CM, Cisalpino D, Werneck SMC, Kikuchi H, Fujise O, Ryffel B, Silva TA, Teixeira MM, Souza DG. MyD88 is essential for alveolar bone loss induced by Aggregatibacter actinomycetemcomitans lipopolysaccharide in mice. Mol Oral Microbiol 2013; 28:415-24. [PMID: 23906379 DOI: 10.1111/omi.12034] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2013] [Indexed: 12/20/2022]
Abstract
Aggregatibacter actinomycetemcomitans is a Gram-negative bacteria highly associated with localized aggressive periodontitis. The recognition of microbial factors, such as lipopolysaccharide from A. actinomycetemcomitans ((Aa)LPS), in the oral environment is made mainly by surface receptors known as Toll-like receptors (TLR). TLR4 is the major LPS receptor. This interaction leads to the production of inflammatory cytokines by myeloid differentiation primary-response protein 88 (MyD88) -dependent and -independent pathways, which may involve the adaptor Toll/interleukin-1 receptor-domain-containing adaptor inducing interferon-β (TRIF). The aim of this study was to assess the involvement of MyD88 in alveolar bone loss induced by (Aa)LPS in mice. C57BL6/J wild-type (WT) mice, MyD88, TRIF or TRIF/MyD88 knockout mice received 10 injections of Aa LPS strain FDC Y4 (5 μg in 3 μl), in the palatal gingival tissue of the right first molar, every 48 h. Phosphate-buffered saline was injected in the opposite side and used as control. Animals were sacrificed 24 h after the 10th injection and the maxillae were removed for macroscopic and biochemical analyses. The injections of Aa LPS induced significant alveolar bone loss in WT mice. In the absence of MyD88 or TRIF/MyD88 no bone loss induced by (Aa)LPS was observed. In contrast, responses in TRIF(-/-) mice were similar to those in WT mice. Diminished bone loss in the absence of MyD88 was associated with fewer TRAP-positive cells and increased expression of osteoblast markers, RUNX2 and osteopontin. There was also reduced tumor necrosis factor-α production in MyD88(-/-) mice. There was less osteoclast differentiation of hematopoietic bone marrow cells from MyD88(-/-) mice after (Aa)LPS stimulation. Hence, the signaling through MyD88 is pivotal for (Aa)LPS-induced osteoclast formation and alveolar bone loss.
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Affiliation(s)
- M F M Madeira
- Departamento de Microbiologia, ICB, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil; Departamento de Bioquímica e Imunologia, ICB, UFMG, Belo Horizonte, MG, Brazil
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Madeira MFM, Queiroz-Junior C, Cisalpino D, Werneck SMC, Kikuchi H, Fujise O, Ryffel B, Silva TA, Teixeira MM, Souza DG. MyD88 is essential for alveolar bone loss induced byAggregatibacter actinomycetemcomitansLPS in mice. Mol Oral Microbiol 2013. [DOI: 10.1111/j.2041-1014.2013.12034.x] [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] [Indexed: 11/26/2022]
Affiliation(s)
| | | | | | | | - H. Kikuchi
- Section of Periodontology, Division of Oral Rehabilitation; Faculty of Dental Science, Kyushu University; Fukuoka; Japan
| | - O. Fujise
- Section of Periodontology, Division of Oral Rehabilitation; Faculty of Dental Science, Kyushu University; Fukuoka; Japan
| | | | | | - M. M. Teixeira
- Departamento de Bioquímica e Imunologia; ICB, UFMG, Belo Horizonte; MG; Brazil
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Olleros M, Vesin D, Bisig R, Drutskaya M, Kruglov A, Quesniaux V, Ryffel B, Nedospasov S, Garcia I. P012 Control of mycobacterial infection in “humanized” TNF knock-in mice. Cytokine 2012. [DOI: 10.1016/j.cyto.2012.06.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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Ivanov S, Fontaine J, Paget C, Macho Fernandez E, Van Maele L, Renneson J, Maillet I, Wolf NM, Rial A, Léger H, Ryffel B, Frisch B, Chabalgoity JA, Sirard JC, Benecke A, Faveeuw C, Trottein F. Key role for respiratory CD103(+) dendritic cells, IFN-γ, and IL-17 in protection against Streptococcus pneumoniae infection in response to α-galactosylceramide. J Infect Dis 2012; 206:723-34. [PMID: 22723642 DOI: 10.1093/infdis/jis413] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Exogenous activation of pulmonary invariant natural killer T (iNKT) cells, a population of lipid-reactive αβ T lymphocytes, with use of mucosal α-galactosylceramide (α-GalCer) administration, is a promising approach to control respiratory bacterial infections. We undertook the present study to characterize mechanisms leading to α-GalCer-mediated protection against lethal infection with Streptococcus pneumoniae serotype 1, a major respiratory pathogen in humans. METHODS AND RESULTS α-GalCer was administered by the intranasal route before infection with S. pneumoniae. We showed that respiratory dendritic cells (DCs), most likely the CD103(+) subset, play a major role in the activation (IFN-γ and IL-17 release) of pulmonary iNKT cells, whereas alveolar and interstitial macrophages are minor players. After challenge, S. pneumoniae was rapidly (4 hours) eliminated in the alveolar spaces, a phenomenon that depended on respiratory DCs and neutrophils, but not macrophages, and on the early production of both IFN-γ and IL-17. Protection was also associated with the synthesis of various interferon-dependent and IL-17-associated genes as revealed by transcriptomic analysis. CONCLUSIONS These data imply a new function for pulmonary CD103(+) DCs in mucosal activation of iNKT cells and establish a critical role for both IFN-γ and IL-17 signalling pathways in mediating the innate immune response to S. pneumoniae.
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Affiliation(s)
- Stoyan Ivanov
- Institut Pasteur de Lille, Centre d'Infection et d'Immunité de Lille, France
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30
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Terme M, Ullrich E, Aymeric L, Meinhardt K, Coudert JD, Desbois M, Ghiringhelli F, Viaud S, Ryffel B, Yagita H, Chen L, Mécheri S, Kaplanski G, Prévost-Blondel A, Kato M, Schultze JL, Tartour E, Kroemer G, Degli-Esposti M, Chaput N, Zitvogel L. Cancer-induced immunosuppression: IL-18-elicited immunoablative NK cells. Cancer Res 2012; 72:2757-67. [PMID: 22427351 DOI: 10.1158/0008-5472.can-11-3379] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
During cancer development, a number of regulatory cell subsets and immunosuppressive cytokines subvert adaptive immune responses. Although it has been shown that tumor-derived interleukin (IL)-18 participates in the PD-1-dependent tumor progression in NK cell-controlled cancers, the mechanistic cues underlying this immunosuppression remain unknown. Here, we show that IL-18 converts a subset of Kit(-) (CD11b(-)) into Kit(+) natural killer (NK) cells, which accumulate in all lymphoid organs of tumor bearers and mediate immunoablative functions. Kit(+) NK cells overexpressed B7-H1/PD-L1, a ligand for PD-1. The adoptive transfer of Kit(+) NK cells promoted tumor growth in two pulmonary metastases tumor models and significantly reduced the dendritic and NK cell pools residing in lymphoid organs in a B7-H1-dependent manner. Neutralization of IL-18 by RNA interference in tumors or systemically by IL-18-binding protein dramatically reduced the accumulation of Kit(+)CD11b(-) NK cells in tumor bearers. Together, our findings show that IL-18 produced by tumor cells elicits Kit(+)CD11b(-) NK cells endowed with B7-H1-dependent immunoablative functions in mice.
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31
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Besnard AG, Guillou N, Tschopp J, Erard F, Couillin I, Iwakura Y, Quesniaux V, Ryffel B, Togbe D. NLRP3 inflammasome is required in murine asthma in the absence of aluminum adjuvant. Allergy 2011; 66:1047-57. [PMID: 21443539 DOI: 10.1111/j.1398-9995.2011.02586.x] [Citation(s) in RCA: 135] [Impact Index Per Article: 10.4] [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: 12/19/2022]
Abstract
BACKGROUND Inflammasome activation with the production of IL-1β received substantial attention recently in inflammatory diseases. However, the role of inflammasome in the pathogenesis of asthma is not clear. Using an adjuvant-free model of allergic lung inflammation induced by ovalbumin (OVA), we investigated the role of NLRP3 inflammasome and related it to IL-1R1 signaling pathway. METHODS Allergic lung inflammation induced by OVA was evaluated in vivo in mice deficient in NLRP3 inflammasome, IL-1R1, IL-1β or IL-1α. Eosinophil recruitment, Th2 cytokine, and chemokine levels were determined in bronchoalveolar lavage fluid, lung homogenates, and mediastinal lymph node cells ex vivo. RESULTS Allergic airway inflammation depends on NLRP3 inflammasome activation. Dendritic cell recruitment into lymph nodes, Th2 lymphocyte activation in the lung and secretion of Th2 cytokines and chemokines are reduced in the absence of NLRP3. Absence of NLRP3 and IL-1β is associated with reduced expression of other proinflammatory cytokines such as IL-5, IL-13, IL-33, and thymic stromal lymphopoietin. Furthermore, the critical role of IL-1R1 signaling in allergic inflammation is confirmed in IL-1R1-, IL-1β-, and IL-1α-deficient mice. CONCLUSION NLRP3 inflammasome activation leading to IL-1 production is critical for the induction of a Th2 inflammatory allergic response.
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Affiliation(s)
- A-G Besnard
- Université d'Orléans and CNRS, Molecular Immunology and Embryology (IEM), Orléans, France
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32
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Terme M, Ullrich E, Aymeric L, Meinhardt K, Desbois M, Delahaye N, Viaud S, Ryffel B, Yagita H, Kaplanski G, Prévost-Blondel A, Kato M, Schultze JL, Tartour E, Kroemer G, Chaput N, Zitvogel L. IL-18 induces PD-1-dependent immunosuppression in cancer. Cancer Res 2011; 71:5393-9. [PMID: 21724589 DOI: 10.1158/0008-5472.can-11-0993] [Citation(s) in RCA: 256] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Immunosuppressive cytokines subvert innate and adaptive immune responses during cancer progression. The inflammatory cytokine interleukin-18 (IL-18) is known to accumulate in cancer patients, but its pathophysiological role remains unclear. In this study, we show that low levels of circulating IL-18, either exogenous or tumor derived, act to suppress the NK cell arm of tumor immunosurveillance. IL-18 produced by tumor cells promotes the development of NK-controlled metastases in a PD-1-dependent manner. Accordingly, PD-1 is expressed by activated mature NK cells in lymphoid organs of tumor bearers and is upregulated by IL-18. RNAi-mediated knockdown of IL-18 in tumors, or its systemic depletion by IL-18-binding protein, are sufficient to stimulate NK cell-dependent immunosurveillance in various tumor models. Together, these results define IL-18 as an immunosuppressive cytokine in cancer. Our findings suggest novel clinical implementations of anti-PD-1 antibodies in human malignancies that produce IL-18.
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Affiliation(s)
- Magali Terme
- Institut Gustave Roussy, Université Paris Descartes, Paris, France
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Sander LE, Davis MJ, Boekschoten MV, Amsen D, Dascher CC, Ryffel B, Swanson JA, Müller M, Blander JM. Detection of prokaryotic mRNA signifies microbial viability and promotes immunity. Nature 2011; 474:385-9. [PMID: 21602824 PMCID: PMC3289942 DOI: 10.1038/nature10072] [Citation(s) in RCA: 322] [Impact Index Per Article: 24.8] [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: 04/30/2010] [Accepted: 03/24/2011] [Indexed: 12/25/2022]
Abstract
Live vaccines have long been known to trigger far more vigorous immune responses than their killed counterparts. This has been attributed to the ability of live microorganisms to replicate and express specialized virulence factors that facilitate invasion and infection of their hosts. However, protective immunization can often be achieved with a single injection of live, but not dead, attenuated microorganisms stripped of their virulence factors. Pathogen-associated molecular patterns (PAMPs), which are detected by the immune system, are present in both live and killed vaccines, indicating that certain poorly characterized aspects of live microorganisms, not incorporated in dead vaccines, are particularly effective at inducing protective immunity. Here we show that the mammalian innate immune system can directly sense microbial viability through detection of a special class of viability-associated PAMPs (vita-PAMPs). We identify prokaryotic messenger RNA as a vita-PAMP present only in viable bacteria, the recognition of which elicits a unique innate response and a robust adaptive antibody response. Notably, the innate response evoked by viability and prokaryotic mRNA was thus far considered to be reserved for pathogenic bacteria, but we show that even non-pathogenic bacteria in sterile tissues can trigger similar responses, provided that they are alive. Thus, the immune system actively gauges the infectious risk by searching PAMPs for signatures of microbial life and thus infectivity. Detection of vita-PAMPs triggers a state of alert not warranted for dead bacteria. Vaccine formulations that incorporate vita-PAMPs could thus combine the superior protection of live vaccines with the safety of dead vaccines.
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MESH Headings
- Adaptor Proteins, Vesicular Transport/deficiency
- Adaptor Proteins, Vesicular Transport/immunology
- Animals
- Antibodies, Bacterial/immunology
- Bacteria/genetics
- Bacteria/immunology
- Bacteria/pathogenicity
- Bacterial Vaccines/genetics
- Bacterial Vaccines/immunology
- Carrier Proteins/metabolism
- Cells, Cultured
- Dendritic Cells/cytology
- Dendritic Cells/immunology
- Dendritic Cells/microbiology
- Immunity, Innate/immunology
- Inflammasomes/immunology
- Inflammasomes/metabolism
- Interferon-beta/genetics
- Interferon-beta/immunology
- Macrophages/cytology
- Macrophages/immunology
- Macrophages/microbiology
- Mice
- Mice, Inbred C57BL
- Microbial Viability/genetics
- Microbial Viability/immunology
- NLR Family, Pyrin Domain-Containing 3 Protein
- Phagocytosis
- Phagosomes/immunology
- Phagosomes/microbiology
- RNA, Bacterial/genetics
- RNA, Bacterial/immunology
- RNA, Messenger/genetics
- RNA, Messenger/immunology
- Vaccines, Attenuated/genetics
- Vaccines, Attenuated/immunology
- Vaccines, Inactivated/immunology
- Virulence Factors
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Affiliation(s)
- Leif E Sander
- Immunology Institute, Department of Medicine, Mount Sinai School of Medicine, 1425 Madison Avenue, New York, New York 10029, USA
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Sander L, Davis M, Boekschoten M, Dascher C, Ryffel B, Amsen D, Swanson J, Mueller M, Blander J. Sensing bacterial viability for host defense (116.23). The Journal of Immunology 2011. [DOI: 10.4049/jimmunol.186.supp.116.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
The innate immune system safeguards the host from invading microorganisms by eliciting carefully measured responses. For example, weaker responses are mounted to dead than to viable microorganisms, a property with important implications for vaccination and host defense. Pathogen associated molecular patterns (PAMPs), which serve to alert the immune system, are present in dead and viable bacteria, raising the question as to how the immune system discriminates between the two. Here we show that the innate immune system can directly sense bacterial viability through detection of a special class of viability-associated PAMPs (vita-PAMPs). We identify prokaryotic messenger RNA (mRNA) as a vita-PAMP present only in viable bacteria, recognition of which elicits a unique innate immune response. Detection of vita-PAMPs in phagocytosed bacteria induces robust production of IFN-β and activation of the NLRP3 inflammasome in various innate immune cells. All responses require the Toll-like receptor adaptor protein TRIF. Importantly, recognition of vita-PAMPs in vivo induces host protective antibody mediated immunity. Thus, the immune system actively gauges the infectious risk by scouring PAMPs for signatures of microbial life and thus infectivity. Detection of vita-PAMPs triggers an alert mode not warranted for dead bacteria. Vaccine formulations that incorporate vita-PAMPs could combine the superior protection of live vaccines with the safety of dead vaccines.
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Affiliation(s)
- Leif Sander
- 1Immunology Institute, Mount Sinai School of Medicine, New York, NY
| | | | | | | | | | - Derk Amsen
- 5University of Amsterdam, Amsterdam, Netherlands
| | | | | | - Julie Blander
- 1Immunology Institute, Mount Sinai School of Medicine, New York, NY
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Ma Y, Aymeric L, Locher C, Mattarollo SR, Delahaye NF, Pereira P, Boucontet L, Apetoh L, Ghiringhelli F, Casares N, Lasarte JJ, Matsuzaki G, Ikuta K, Ryffel B, Benlagha K, Tesnière A, Ibrahim N, Déchanet-Merville J, Chaput N, Smyth MJ, Kroemer G, Zitvogel L. Contribution of IL-17-producing gamma delta T cells to the efficacy of anticancer chemotherapy. ACTA ACUST UNITED AC 2011; 208:491-503. [PMID: 21383056 PMCID: PMC3058575 DOI: 10.1084/jem.20100269] [Citation(s) in RCA: 270] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
IL-17 production by γδ T cells is required for tumor cell infiltration by IFN-γ–producing CD8+ T cells and inhibition of tumor growth in response to anthracyclines. By triggering immunogenic cell death, some anticancer compounds, including anthracyclines and oxaliplatin, elicit tumor-specific, interferon-γ–producing CD8+ αβ T lymphocytes (Tc1 CTLs) that are pivotal for an optimal therapeutic outcome. Here, we demonstrate that chemotherapy induces a rapid and prominent invasion of interleukin (IL)-17–producing γδ (Vγ4+ and Vγ6+) T lymphocytes (γδ T17 cells) that precedes the accumulation of Tc1 CTLs within the tumor bed. In T cell receptor δ−/− or Vγ4/6−/− mice, the therapeutic efficacy of chemotherapy was compromised, no IL-17 was produced by tumor-infiltrating T cells, and Tc1 CTLs failed to invade the tumor after treatment. Although γδ T17 cells could produce both IL-17A and IL-22, the absence of a functional IL-17A–IL-17R pathway significantly reduced tumor-specific T cell responses elicited by tumor cell death, and the efficacy of chemotherapy in four independent transplantable tumor models. Adoptive transfer of γδ T cells restored the efficacy of chemotherapy in IL-17A−/− hosts. The anticancer effect of infused γδ T cells was lost when they lacked either IL-1R1 or IL-17A. Conventional helper CD4+ αβ T cells failed to produce IL-17 after chemotherapy. We conclude that γδ T17 cells play a decisive role in chemotherapy-induced anticancer immune responses.
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Affiliation(s)
- Yuting Ma
- Institut National de la Santé et de la Recherche Médicale (INSERM) U1015, France
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Secher T, Fauconnier L, Szade A, Rutschi O, Fas SC, Ryffel B, Rudolf MP. Anti-Pseudomonas aeruginosa serotype O11 LPS immunoglobulin M monoclonal antibody panobacumab (KBPA101) confers protection in a murine model of acute lung infection. J Antimicrob Chemother 2011; 66:1100-9. [PMID: 21393169 DOI: 10.1093/jac/dkr038] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVES To investigate the in vivo efficacy in a murine pulmonary infection model of panobacumab (KBPA101), a human IgM monoclonal antibody directed against the O-polysaccharide moiety of Pseudomonas aeruginosa serotype O11, and to describe the anti-inflammatory effects in the lung as a consequence of the treatment. METHODS We established an experimental murine model of acute pneumonia by intranasal administration of P. aeruginosa serotype O11. Mice were treated, after infection, with a single intravenous injection of panobacumab and panobacumab lung bioavailability was assessed. Inflammatory parameters such as pro-inflammatory cytokine production and neutrophil recruitment in broncho-alveolar lavage fluid (BALF) were measured and bacterial load in the lung was analysed. RESULTS Panobacumab plays a significant role in addition to the host innate immune response, leading to improved control of pulmonary infection. The IgM antibody is able to reach the broncho-alveolar space and reduce the pulmonary bacterial load as well as lung inflammation in a dose-dependent manner. Furthermore, panobacumab treatment leads to enhanced neutrophil recruitment in BALF while reducing the host-derived production of pro-inflammatory mediators and lung injury. CONCLUSIONS These data provide evidence that panobacumab, an IgM-based immunotherapeutic, is highly efficacious in controlling acute lung infection by enhancing the natural innate immune response.
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37
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Brellier F, Hostettler K, Hotz HR, Ozcakir C, Çöloğlu SA, Togbe D, Ryffel B, Roth M, Chiquet-Ehrismann R. Tenascin-C triggers fibrin accumulation by downregulation of tissue plasminogen activator. FEBS Lett 2011; 585:913-20. [PMID: 21354146 DOI: 10.1016/j.febslet.2011.02.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Accepted: 02/18/2011] [Indexed: 10/18/2022]
Abstract
We explored novel functions of tenascin-C by comparing mouse embryonic fibroblasts (MEFs) proficient or deficient in tenascin-C expression. Transcript profiling analysis identified tissue plasminogen activator (tPA) as the most consistently over-expressed gene in all tenascin-C deficient MEFs. This was confirmed by real-time PCR as well as by protein expression analysis. In agreement with these observations, tenascin-C deficient MEFs had an increased capacity to digest fibrin in situ. Consistently, tenascin-C expression in vivo was found to correlate with fibrin deposition in several diseases associated with tenascin-C overexpression such as fibrosis, asthma and cancer. In conclusion, the present study suggests a new role of tenascin-C as a regulator of the fibrinolytic system.
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Affiliation(s)
- Florence Brellier
- Friedrich Miescher Institute for Biomedical Research, Novartis Research Foundation, Basel, Switzerland.
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38
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Tourret J, Aloulou M, Garry L, Tenaillon O, Dion S, Ryffel B, Monteiro RC, Denamur E. The interaction between a non-pathogenic and a pathogenic strain synergistically enhances extra-intestinal virulence in Escherichia coli. Microbiology (Reading) 2010; 157:774-785. [PMID: 21071495 DOI: 10.1099/mic.0.037416-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Finding two or more genotypes of a single species within an infected sample is a not infrequent event. In this work, three Escherichia coli strains of decreasing extra-intestinal virulence (pathogenic B2S and B1S strains, and the avirulent K-12 MG1655 strain) were tested in septicaemia and urinary tract infection (UTI) mouse models, either separately or in pairs. Survival was monitored and bacteria were counted in various organs. Serum interleukin (IL)-6, tumour necrosis factor alpha (TNFα) and IL-10 were measured. We show that a mix of high amounts of B1S or of MG1655 with low amounts of B2S killed more rapidly (B1S), or killed more mice (MG1655), than either high amounts of B1S, high amounts of MG1655 or low amounts of B2S separately in the mouse septicaemia model. This bacterial synergy persisted when high amounts of dead or abnormal-LPS K-12 cells were injected together with a low amount of B2S. In both septicaemia and UTI models, significantly more bacteria were recovered from the organs of mice injected with the MG1655/B2S mix than from those of mice injected with the inocula separately. Consistently, in the septicaemia model, more IL-6 was secreted before death by the mice that were injected with the mix of bacteria than by the mice that were injected with the inocula separately. The synergistically enhanced mortality in the case of co-infection in the septicaemia model persisted in RFcγ(-/-), Myd88(-/-) and IL-6(-/-) knockout mice. This synergistically increased virulence resulting from the interaction between an avirulent and a pathogenic strain of the same bacterial species raises questions about the role of avirulent bacteria in the development of some extra-intestinal infections.
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Affiliation(s)
- Jérôme Tourret
- INSERM U722, and Université Paris 7 Denis Diderot, Site Xavier Bichat, 75018 Paris, France
| | - Meryem Aloulou
- INSERM U699, and Université Paris 7 Denis Diderot, Site Xavier Bichat, 75018 Paris, France
| | - Louis Garry
- INSERM U722, and Université Paris 7 Denis Diderot, Site Xavier Bichat, 75018 Paris, France
| | - Olivier Tenaillon
- INSERM U722, and Université Paris 7 Denis Diderot, Site Xavier Bichat, 75018 Paris, France
| | - Sara Dion
- INSERM U722, and Université Paris 7 Denis Diderot, Site Xavier Bichat, 75018 Paris, France
| | - Bernard Ryffel
- CNRS UMR6218, and Université d'Orléans and Molecular Immunology and Embryology, IEM2815, 45071 Orléans, France
| | - Renato C Monteiro
- INSERM U699, and Université Paris 7 Denis Diderot, Site Xavier Bichat, 75018 Paris, France
| | - Erick Denamur
- INSERM U722, and Université Paris 7 Denis Diderot, Site Xavier Bichat, 75018 Paris, France
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Brattström A, Schapowal A, Kamal MA, Maillet I, Ryffel B, Moser R. The plant extract Isatis tinctoria L. extract (ITE) inhibits allergen-induced airway inflammation and hyperreactivity in mice. Phytomedicine 2010; 17:551-556. [PMID: 20092989 DOI: 10.1016/j.phymed.2009.11.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2009] [Revised: 10/05/2009] [Accepted: 11/25/2009] [Indexed: 05/28/2023]
Abstract
BACKGROUND The herbal Isatis tinctoria extract (ITE) inhibits the inducible isoform of cyclooxygenase (COX-2) as well as lipoxygenase (5-LOX) and therefore possesses anti-inflammatory properties. The extract might also be useful in allergic airway diseases which are characterized by chronic inflammation. METHODS ITE obtained from leaves by supercritical carbon dioxide extraction was investigated in ovalbumin (OVA) immunised BALB/c mice given intranasally together with antigen challenge in the murine model of allergic airway disease (asthma) with the analysis of the inflammatory and immune parameters in the lung. RESULTS ITE given with the antigen challenge inhibited in a dose related manner the allergic response. ITE diminished airway hyperresponsiveness (AHR) and eosinophil recruitment into the bronchoalveolar lavage (BAL) fluid upon allergen challenge, but had no effect in the saline control mice. Eosinophil recruitment was further assessed in the lung by eosinophil peroxidase (EPO) activity at a dose of 30 microg ITE per mouse. Microscopic investigations revealed less inflammation, eosinophil recruitment and mucus hyperproduction in the lung in a dose related manner. Diminution of AHR and inflammation was associated with reduced IL-4, IL-5, and RANTES production in the BAL fluid at the 30 microg ITE dose, while OVA specific IgE and eotaxin serum levels remained unchanged. CONCLUSION ITE, which has been reported inhibiting COX-2 and 5-LOX, reduced allergic airway inflammation and AHR by inhibiting the production of the Th2 cytokines IL-4 and IL-5, and RANTES.
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Brattström A, Schapowal A, Maillet I, Schnyder B, Ryffel B, Moser R. Petasites extract Ze 339 (PET) inhibits allergen-induced Th2 responses, airway inflammation and airway hyperreactivity in mice. Phytother Res 2010; 24:680-5. [PMID: 19827027 DOI: 10.1002/ptr.2972] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND The herbal Petasites hybridus (butterbur) extract (Ze 339, PET) is known to have leukotriene inhibiting properties, and therefore might inhibit allergic diseases. METHODS The effect of PET was investigated in ovalbumin (OVA) immunized BALB/c mice given intranasally together with antigen challenge in the murine model of allergic airway disease (asthma) with the analysis of the inflammatory and immune parameters in the lung. RESULTS PET given with the antigen challenge inhibited the allergic response. PET inhibited airway hyperresponsiveness (AHR) and eosinophil recruitment into the bronchoalveolar lavage (BAL) fluid upon allergen challenge, but had no effect in the saline control mice. Eosinophil recruitment was further assessed in the lung by eosinophil peroxidase (EPO) activity at a concentration of 100 microg PET. Microscopic investigations revealed less inflammation, eosinophil recruitment and mucus hyperproduction in the lung with 100 microg PET. Diminution of AHR and inflammation was associated with reduced IL-4, IL-5 and RANTES production in the BAL fluid with 30 microg PET, while OVA specific IgE and eotaxin serum levels remained unchanged. CONCLUSION PET, which has been reported to inhibit leukotriene activity, reduced allergic airway inflammation and AHR by inhibiting the production of the Th2 cytokines IL-4 and IL-5, and RANTES.
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Lo Re S, Dumoutier L, Couillin I, Van Vyve C, Yakoub Y, Uwambayinema F, Marien B, van den Brûle S, Van Snick J, Uyttenhove C, Ryffel B, Renauld JC, Lison D, Huaux F. IL-17A-producing gammadelta T and Th17 lymphocytes mediate lung inflammation but not fibrosis in experimental silicosis. J Immunol 2010; 184:6367-77. [PMID: 20421647 DOI: 10.4049/jimmunol.0900459] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
IL-17-producing T lymphocytes play a crucial role in inflammation, but their possible implication in fibrosis remains to be explored. In this study, we examined the involvement of these cells in a mouse model of lung inflammation and fibrosis induced by silica particles. Upregulation of IL-17A was associated with the development of experimental silicosis, but this response was markedly reduced in athymic, gammadelta T cell-deficient or CD4(+) T cell-depleted mice. In addition, gammadelta T lymphocytes and CD4(+) T cells, but not macrophages, neutrophils, NK cells or CD8 T cells, purified from the lungs of silicotic mice markedly expressed IL-17A. Depletion of alveolar macrophages or neutralization of IL-23 reduced upregulation of IL-17A in the lung of silicotic mice. IL-17R-deficient animals (IL-17R(-/-)) or IL-17A Ab neutralization, but not IL-22(-/-) mice, developed reduced neutrophil influx and injury during the early lung response to silica. However, chronic inflammation, fibrosis, and TGF-beta expression induced by silica were not attenuated in the absence of IL-17R or -22 or after IL-17A Ab blockade. In conclusion, a rapid lung recruitment of IL-17A-producing T cells, mediated by macrophage-derived IL-23, is associated with experimental silicosis in mice. Although the acute alveolitis induced by silica is IL-17A dependent, this cytokine appears dispensable for the development of the late inflammatory and fibrotic lung responses to silica.
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Affiliation(s)
- Sandra Lo Re
- Louvain Centre for Toxicology and Applied Pharmacology, de Duve Institute, Université catholique de Louvain, Brussels, Belgium
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Conforti R, Ma Y, Morel Y, Paturel C, Terme M, Viaud S, Ryffel B, Ferrantini M, Uppaluri R, Schreiber R, Combadière C, Chaput N, André F, Kroemer G, Zitvogel L. Opposing effects of toll-like receptor (TLR3) signaling in tumors can be therapeutically uncoupled to optimize the anticancer efficacy of TLR3 ligands. Cancer Res 2010; 70:490-500. [PMID: 20068181 DOI: 10.1158/0008-5472.can-09-1890] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Many cancer cells express Toll-like receptors (TLR) that offer possible therapeutic targets. Polyadenylic-polyuridylic acid [poly(A:U)] is an agonist of the Toll-like receptor TLR3 that displays anticancer properties. In this study, we illustrate how the immunostimulatory and immunosuppressive effects of this agent can be uncoupled to therapeutic advantage. We took advantage of two TLR3-expressing tumor models that produced large amounts of CCL5 (a CCR5 ligand) and CXCL10 (a CXCR3 ligand) in response to type I IFN and poly(A:U), both in vitro and in vivo. Conventional chemotherapy or in vivo injection of poly(A:U), alone or in combination, failed to reduce tumor growth unless an immunochemotherapeutic regimen of vaccination against tumor antigens was included. CCL5 blockade improved the efficacy of immunochemotherapy, whereas CXCR3 blockade abolished its beneficial effects. These findings show how poly(A:U) can elicit production of a range of chemokines by tumor cells that reinforce immunostimulatory or immunosuppressive effects. Optimizing the anticancer effects of TLR3 agonists may require manipulating these chemokines or their receptors.
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Affiliation(s)
- Rosa Conforti
- Institut Gustave Roussy, U848, 94805 Villejuif, France
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Bolea R, Hortells P, Martín-Burriel I, Vargas A, Ryffel B, Monzón M, Badiola JJ. Consequences of dietary manganese and copper imbalance on neuronal apoptosis in a murine model of scrapie. Neuropathol Appl Neurobiol 2010; 36:300-11. [PMID: 20070537 DOI: 10.1111/j.1365-2990.2010.01065.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
AIMS Copper and manganese levels are altered in mice both lacking PrPc and prion-infected brains. The aim of this study was to analyse the effects of manganese and copper imbalance on neuronal apoptosis in a scrapie-infected Tga20 mouse model. METHODS Immunoreactivities for the apoptotic proteins Bax and active caspase-3 were evaluated in nine regions of the brain of scrapie-infected and control Tga20 mice treated with one of several diets: depleted cooper (-Cu), loaded manganese (+Mn), depleted copper/loaded manganese (-Cu+Mn) and regular diet. Immunohistochemical determination of NeuN was used to detect possible neuronal loss. RESULTS Intracellular Bax detection was significantly decreased in animals fed with modified diets, particularly in those treated with copper-depleted diets. A decrease in active caspase-3 was primarily observed in animals fed with enhanced manganese diets. Our results show that the -Cu, -Cu+Mn and +Mn diets protected against apoptosis in scrapie-infected mice. However, NeuN immunolabelling quantification revealed that no diet was sufficient to arrest neuronal death. CONCLUSIONS With regard to apoptosis induction, the response of Tga20 mice to prion infection was similar to that reported for other mice models. Our results demonstrate the neuroprotective effects of -Cu, -Cu+Mn and +Mn diets in a murine model of scrapie. However, neuronal death induced by infection with prions seems to be independent of apoptosis marker signalling. Moreover, copper-modified diets were neuroprotective against the possible toxicity of the prion transgene in Tga20 control and infected mice even though manganese supplementation could not counteract this toxicity.
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Affiliation(s)
- R Bolea
- Animal Pathology Department, University of Zaragoza, Zaragoza, Spain.
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Dessein R, Gironella M, Vignal C, Peyrin-Biroulet L, Sokol H, Secher T, Lacas-Gervais S, Gratadoux JJ, Lafont F, Dagorn JC, Ryffel B, Akira S, Langella P, Nùñez G, Sirard JC, Iovanna J, Simonet M, Chamaillard M. Toll-like receptor 2 is critical for induction of Reg3 beta expression and intestinal clearance of Yersinia pseudotuberculosis. Gut 2009; 58:771-6. [PMID: 19174417 DOI: 10.1136/gut.2008.168443] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
OBJECTIVE Yersinia pseudotuberculosis causes ileitis and mesenteric lymphadenitis by mainly invading the Peyer's patches that are positioned in the terminal ileum. Whereas toll-like-receptor 2 (TLR2) controls mucosal inflammation by detecting certain microbiota-derived signals, its exact role in protecting Peyer's patches against bacterial invasion has not been defined. DESIGN Wild-type, Tlr2-, Nod2- and MyD88-deficient animals were challenged by Y pseudotuberculosis via the oral or systemic route. The role of microbiota in conditioning Peyer's patches against Yersinia through TLR2 was assessed by delivering, ad libitum, exogenous TLR2 agonists in drinking water to germ-free and streptomycin-treated animals. Bacterial eradication from Peyer's patches was measured by using a colony-forming unit assay. Expression of cryptdins and the c-type lectin Reg3 beta was quantified by quantitative reverse transcriptase polymerase chain reaction analysis. RESULTS Our data demonstrated that Tlr2-deficient mice failed to limit Yersinia dissemination from the Peyer's patches and succumbed to sepsis independently of nucleotide-binding and oligomerisation domain 2 (NOD2). Recognition of both microbiota-derived and myeloid differentiation factor 88 (MyD88)-mediated elicitors was found to be critically involved in gut protection against Yersinia-induced lethality, while TLR2 was dispensable to systemic Yersinia infection. Gene expression analyses revealed that optimal epithelial transcript level of the anti-infective Reg3 beta requires TLR2 activation. Consistently, Yersinia infection triggered TLR2-dependent Reg3 beta expression in Peyer's patches. Importantly, oral treatment with exogenous TLR2 agonists in germ-free animals was able to further enhance Yersinia-induced expression of Reg3 beta and to restore intestinal resistance to Yersinia. Lastly, genetic ablation of Reg3 beta resulted in impaired clearance of the bacterial load in Peyer's patches. CONCLUSIONS TLR2/REG3 beta is thus an essential component in conditioning epithelial defence signalling pathways against bacterial invasion.
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Affiliation(s)
- R Dessein
- Inserm, U801, Université de Lille 2, Institut Pasteur de Lille, Lille, France
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Hortells P, Monleón E, Acín C, Vargas A, Vasseur V, Salomon A, Ryffel B, Cesbron JY, Badiola JJ, Monzón M. The Effect of Metal Imbalances on Scrapie Neurodegeneration. Zoonoses Public Health 2009; 57:358-66. [DOI: 10.1111/j.1863-2378.2009.01230.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gasse P, Riteau N, Pétrilli V, Tschopp J, Lagente V, Quesniaux V, Ryffel B, Couillin I. Uric acid is a danger signal activating NALP3 inflammasome in lung injury inflammation and fibrosis. Rev Mal Respir 2008. [DOI: 10.1016/s0761-8425(08)75060-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Torres D, Dieudonne A, Vilain E, Ryffel B, Si Tahar M, Gosset P. Conséquences de l’activation du TLR3 sur les cellules épithéliales bronchiques dans le contexte de la réaction allergique. Rev Mal Respir 2008. [DOI: 10.1016/s0761-8425(08)74996-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ullrich E, Bonmort M, Mignot G, Jacobs B, Bosisio D, Sozzani S, Jalil A, Louache F, Bulanova E, Geissman F, Ryffel B, Chaput N, Bulfone-Paus S, Zitvogel L. Trans-presentation of IL-15 dictates IFN-producing killer dendritic cells effector functions. J Immunol 2008; 180:7887-97. [PMID: 18523252 DOI: 10.4049/jimmunol.180.12.7887] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
IFN-producing killer dendritic cells (IKDC) were initially described as B220(+)CD11c(+)CD3(-)NK1.1(+) tumor-infiltrating cells that mediated part of the antitumor effects of the combination therapy with imatinib mesylate and IL-2. In this study, we show their functional dependency on IL-15 during homeostasis and inflammatory processes. Trans-presentation of IL-15 by IL-15Ralpha allows dramatic expansion of IKDC in vitro and in vivo, licenses IKDC for TRAIL-dependent killing and endows IKDC with immunizing potential, all three biological attributes not shared by B220(-)NK cells. However, IL-15 down-regulates the capacity of IKDC to induce MHC class I- or II-restricted T cell activation in vitro. Trans-presentation of IL-15 by IL-15Ralpha allows IKDC to respond to TLR3 and TLR4 ligands for the production of CCL2, a chemokine that is critical for IKDC trafficking into tumor beds (as described recently). We conclude that IKDC represent a unique subset of innate effectors functionally distinguishable from conventional NK cells in their ability to promptly respond to IL-15-driven inflammatory processes.
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Affiliation(s)
- Evelyn Ullrich
- Institut National de la Santé et de la Recherche Médicale U805, Center of Clinical Investigations CBT507, Institut Gustave Roussy, Villejuif, France
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Hortells P, Monleón E, Acín C, Vargas A, Ryffel B, Cesbron JY, Badiola JJ, Monzón M. Effect of the dimethoate administration on a Scrapie murine model. Zoonoses Public Health 2008; 55:368-75. [PMID: 18667030 DOI: 10.1111/j.1863-2378.2008.01139.x] [Citation(s) in RCA: 3] [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] [Indexed: 11/29/2022]
Abstract
Some authors have associated organophosphate compounds with susceptibility to transmissible spongiform encephalopathy (TSE) and even with the origin of this group of diseases. Nevertheless, the actual role played by these compounds still remains unclear. The aim of this study was to assess the effect of oral exposure to dimethoate (DMT) on the development of Scrapie using a genetically modified murine model. A total of 70 C57BL/6 mice over-expressing the PrP gene (Tg20) were included in the present study. A portion of the mice were intraperitoneally inoculated, while the rest were maintained as non-infected controls. Animals from the treated group were exposed to dimethoate dissolved in drinking water from the beginning of the experiment. Variables of incubation period, spongiosis, PrPsc deposits, glial over-expression, neuronal loss, and amyloid plaques were assessed in all animals. According to the results, a treatment consisting of a daily 15 mg/kg dose of DMT for 5 weeks did not show any effect on any of the variables assessed. Although more exhaustive studies for assessing different doses and organic compounds are required, this finding constitutes an empirical study that rules out the possibility that this compound may have a predisposing effect on TSEs.
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Affiliation(s)
- P Hortells
- Research Centre for Prion Diseases, Faculty of Veterinary, University of Zaragoza, Zaragoza, Spain
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Bortolatto J, Borducchi E, Rodriguez D, Keller AC, Faquim-Mauro E, Bortoluci KR, Mucida D, Gomes E, Christ A, Schnyder-Candrian S, Schnyder B, Ryffel B, Russo M. Toll-like receptor 4 agonists adsorbed to aluminium hydroxide adjuvant attenuate ovalbumin-specific allergic airway disease: role of MyD88 adaptor molecule and interleukin-12/interferon-gamma axis. Clin Exp Allergy 2008; 38:1668-79. [PMID: 18631348 DOI: 10.1111/j.1365-2222.2008.03036.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Epidemiological and experimental data suggest that bacterial lipopolysaccharides (LPS) can either protect from or exacerbate allergic asthma. Lipopolysaccharides trigger immune responses through toll-like receptor 4 (TLR4) that in turn activates two major signalling pathways via either MyD88 or TRIF adaptor proteins. The LPS is a pro-Type 1 T helper cells (Th1) adjuvant while aluminium hydroxide (alum) is a strong Type 2 T helper cells (Th2) adjuvant, but the effect of the mixing of both adjuvants on the development of lung allergy has not been investigated. OBJECTIVE We determined whether natural (LPS) or synthetic (ER-803022) TLR4 agonists adsorbed onto alum adjuvant affect allergen sensitization and development of airway allergic disease. To dissect LPS-induced molecular pathways, we used TLR4-, MyD88-, TRIF-, or IL-12/IFN-gamma-deficient mice. METHODS Mice were sensitized with subcutaneous injections of ovalbumin (OVA) with or without TLR4 agonists co-adsorbed onto alum and challenged with intranasally with OVA. The development of allergic lung disease was evaluated 24 h after last OVA challenge. RESULTS Sensitization with OVA plus LPS co-adsorbed onto alum impaired in dose-dependent manner OVA-induced Th2-mediated allergic responses such as airway eosinophilia, type-2 cytokines secretion, airway hyper-reactivity, mucus hyper production and serum levels of IgE or IgG1 anaphylactic antibodies. Although the levels of IgG2a, Th1-affiliated isotype increased, investigation into the lung-specific effects revealed that LPS did not induce a Th1 pattern of inflammation. Lipopolysaccharides impaired the development of Th2 immunity, signaling via TLR4 and MyD88 molecules and via the IL-12/IFN-gamma axis, but not through TRIF pathway. Moreover, the synthetic TLR4 agonists that proved to have a less systemic inflammatory response than LPS also protected against allergic asthma development. CONCLUSION Toll-like receptor 4 agonists co-adsorbed with allergen onto alum down-modulate allergic lung disease and prevent the development of polarized T cell-mediated airway inflammation.
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Affiliation(s)
- J Bortolatto
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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