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Minutti CM, Piot C, Pereira da Costa M, Chakravarty P, Rogers N, Huerga Encabo H, Cardoso A, Loong J, Bessou G, Mionnet C, Langhorne J, Bonnet D, Dalod M, Tomasello E, Reis E Sousa C. Distinct ontogenetic lineages dictate cDC2 heterogeneity. Nat Immunol 2024; 25:448-461. [PMID: 38351322 PMCID: PMC10907303 DOI: 10.1038/s41590-024-01745-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 01/08/2024] [Indexed: 03/03/2024]
Abstract
Conventional dendritic cells (cDCs) include functionally and phenotypically diverse populations, such as cDC1s and cDC2s. The latter population has been variously subdivided into Notch-dependent cDC2s, KLF4-dependent cDC2s, T-bet+ cDC2As and T-bet- cDC2Bs, but it is unclear how all these subtypes are interrelated and to what degree they represent cell states or cell subsets. All cDCs are derived from bone marrow progenitors called pre-cDCs, which circulate through the blood to colonize peripheral tissues. Here, we identified distinct mouse pre-cDC2 subsets biased to give rise to cDC2As or cDC2Bs. We showed that a Siglec-H+ pre-cDC2A population in the bone marrow preferentially gave rise to Siglec-H- CD8α+ pre-cDC2As in tissues, which differentiated into T-bet+ cDC2As. In contrast, a Siglec-H- fraction of pre-cDCs in the bone marrow and periphery mostly generated T-bet- cDC2Bs, a lineage marked by the expression of LysM. Our results showed that cDC2A versus cDC2B fate specification starts in the bone marrow and suggest that cDC2 subsets are ontogenetically determined lineages, rather than cell states imposed by the peripheral tissue environment.
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Affiliation(s)
- Carlos M Minutti
- Immunobiology Laboratory, The Francis Crick Institute, London, UK.
- Immunoregulation Laboratory, Champalimaud Research, Champalimaud Centre for the Unknown, Lisbon, Portugal.
| | - Cécile Piot
- Immunobiology Laboratory, The Francis Crick Institute, London, UK
| | | | - Probir Chakravarty
- Bioinformatics and Biostatistics, The Francis Crick Institute, London, UK
| | - Neil Rogers
- Immunobiology Laboratory, The Francis Crick Institute, London, UK
| | | | - Ana Cardoso
- Immunobiology Laboratory, The Francis Crick Institute, London, UK
| | - Jane Loong
- Retroviral Immunology Laboratory, The Francis Crick Institute, London, UK
| | - Gilles Bessou
- Aix-Marseille University, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Cyrille Mionnet
- Aix-Marseille University, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Jean Langhorne
- Malaria Immunology Laboratory, The Francis Crick Institute, London, UK
| | - Dominique Bonnet
- Haematopoietic Stem Cell Laboratory, The Francis Crick Institute, London, UK
| | - Marc Dalod
- Aix-Marseille University, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Elena Tomasello
- Aix-Marseille University, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
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2
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Kandalla PK, Subburayalu J, Cocita C, de Laval B, Tomasello E, Iacono J, Nitsche J, Canali MM, Cathou W, Bessou G, Mossadegh‐Keller N, Huber C, Mouchiroud G, Bourette RP, Grasset M, Bornhäuser M, Sarrazin S, Dalod M, Sieweke MH. M-CSF directs myeloid and NK cell differentiation to protect from CMV after hematopoietic cell transplantation. EMBO Mol Med 2023; 15:e17694. [PMID: 37635627 PMCID: PMC10630876 DOI: 10.15252/emmm.202317694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 07/25/2023] [Accepted: 07/25/2023] [Indexed: 08/29/2023] Open
Abstract
Therapies reconstituting autologous antiviral immunocompetence may represent an important prophylaxis and treatment for immunosuppressed individuals. Following hematopoietic cell transplantation (HCT), patients are susceptible to Herpesviridae including cytomegalovirus (CMV). We show in a murine model of HCT that macrophage colony-stimulating factor (M-CSF) promoted rapid antiviral activity and protection from viremia caused by murine CMV. M-CSF given at transplantation stimulated sequential myeloid and natural killer (NK) cell differentiation culminating in increased NK cell numbers, production of granzyme B and interferon-γ. This depended upon M-CSF-induced myelopoiesis leading to IL15Rα-mediated presentation of IL-15 on monocytes, augmented by type I interferons from plasmacytoid dendritic cells. Demonstrating relevance to human HCT, M-CSF induced myelomonocytic IL15Rα expression and numbers of functional NK cells in G-CSF-mobilized hematopoietic stem and progenitor cells. Together, M-CSF-induced myelopoiesis triggered an integrated differentiation of myeloid and NK cells to protect HCT recipients from CMV. Thus, our results identify a rationale for the therapeutic use of M-CSF to rapidly reconstitute antiviral activity in immunocompromised individuals, which may provide a general paradigm to boost innate antiviral immunocompetence using host-directed therapies.
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Affiliation(s)
- Prashanth K Kandalla
- Center for Regenerative Therapies Dresden (CRTD)Technical University DresdenDresdenGermany
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
| | - Julien Subburayalu
- Center for Regenerative Therapies Dresden (CRTD)Technical University DresdenDresdenGermany
- Department of Internal Medicine IUniversity Hospital Carl Gustav Carus DresdenDresdenGermany
| | - Clément Cocita
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
- Aix‐Marseille University, CNRS, INSERMCIML, Turing Center for Living SystemsMarseilleFrance
| | | | - Elena Tomasello
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
- Aix‐Marseille University, CNRS, INSERMCIML, Turing Center for Living SystemsMarseilleFrance
| | - Johanna Iacono
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
| | - Jessica Nitsche
- Center for Regenerative Therapies Dresden (CRTD)Technical University DresdenDresdenGermany
| | - Maria M Canali
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
| | | | - Gilles Bessou
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
- Aix‐Marseille University, CNRS, INSERMCIML, Turing Center for Living SystemsMarseilleFrance
| | | | - Caroline Huber
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
| | | | - Roland P Bourette
- CNRS, INSERM, CHU Lille, University LilleUMR9020‐U1277 ‐ CANTHER – Cancer Heterogeneity Plasticity and Resistance to TherapiesLilleFrance
| | | | - Martin Bornhäuser
- Center for Regenerative Therapies Dresden (CRTD)Technical University DresdenDresdenGermany
- Department of Internal Medicine IUniversity Hospital Carl Gustav Carus DresdenDresdenGermany
- National Center for Tumor Diseases (NCT), DresdenDresdenGermany
| | - Sandrine Sarrazin
- Center for Regenerative Therapies Dresden (CRTD)Technical University DresdenDresdenGermany
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
| | - Marc Dalod
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
- Aix‐Marseille University, CNRS, INSERMCIML, Turing Center for Living SystemsMarseilleFrance
| | - Michael H Sieweke
- Center for Regenerative Therapies Dresden (CRTD)Technical University DresdenDresdenGermany
- Aix Marseille University, CNRS, INSERMCIMLMarseilleFrance
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3
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Valente M, Collinet N, Vu Manh TP, Popoff D, Rahmani K, Naciri K, Bessou G, Rua R, Gil L, Mionnet C, Milpied P, Tomasello E, Dalod M. Novel mouse models based on intersectional genetics to identify and characterize plasmacytoid dendritic cells. Nat Immunol 2023; 24:714-728. [PMID: 36928414 PMCID: PMC10063451 DOI: 10.1038/s41590-023-01454-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 02/03/2023] [Indexed: 03/18/2023]
Abstract
Plasmacytoid dendritic cells (pDCs) are the main source of type I interferon (IFN-I) during viral infections. Their other functions are debated, due to a lack of tools to identify and target them in vivo without affecting pDC-like cells and transitional DCs (tDCs), which harbor overlapping phenotypes and transcriptomes but a higher efficacy for T cell activation. In the present report, we present a reporter mouse, pDC-Tom, designed through intersectional genetics based on unique Siglech and Pacsin1 coexpression in pDCs. The pDC-Tom mice specifically tagged pDCs and, on breeding with Zbtb46GFP mice, enabled transcriptomic profiling of all splenic DC types, unraveling diverging activation of pDC-like cells versus tDCs during a viral infection. The pDC-Tom mice also revealed initially similar but later divergent microanatomical relocation of splenic IFN+ versus IFN- pDCs during infection. The mouse models and specific gene modules we report here will be useful to delineate the physiological functions of pDCs versus other DC types.
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Affiliation(s)
- Michael Valente
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France.
- Veracyte, Luminy biotech entreprises, Marseille, France.
| | - Nils Collinet
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Thien-Phong Vu Manh
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Dimitri Popoff
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Khalissa Rahmani
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Karima Naciri
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Gilles Bessou
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Rejane Rua
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Laurine Gil
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Cyrille Mionnet
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Pierre Milpied
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Elena Tomasello
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France.
| | - Marc Dalod
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France.
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4
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Gainullina A, Mogilenko DA, Huang LH, Todorov H, Narang V, Kim KW, Yng LS, Kent A, Jia B, Seddu K, Krchma K, Wu J, Crozat K, Tomasello E, Dress R, See P, Scott C, Gibbings S, Bajpai G, Desai JV, Maier B, This S, Wang P, Aguilar SV, Poupel L, Dussaud S, Zhou TA, Angeli V, Blander JM, Choi K, Dalod M, Dzhagalov I, Gautier EL, Jakubzick C, Lavine K, Lionakis MS, Paidassi H, Sieweke MH, Ginhoux F, Guilliams M, Benoist C, Merad M, Randolph GJ, Sergushichev A, Artyomov MN. Network analysis of large-scale ImmGen and Tabula Muris datasets highlights metabolic diversity of tissue mononuclear phagocytes. Cell Rep 2023; 42:112046. [PMID: 36708514 PMCID: PMC10372199 DOI: 10.1016/j.celrep.2023.112046] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 12/06/2022] [Accepted: 01/17/2023] [Indexed: 01/28/2023] Open
Abstract
The diversity of mononuclear phagocyte (MNP) subpopulations across tissues is one of the key physiological characteristics of the immune system. Here, we focus on understanding the metabolic variability of MNPs through metabolic network analysis applied to three large-scale transcriptional datasets: we introduce (1) an ImmGen MNP open-source dataset of 337 samples across 26 tissues; (2) a myeloid subset of ImmGen Phase I dataset (202 MNP samples); and (3) a myeloid mouse single-cell RNA sequencing (scRNA-seq) dataset (51,364 cells) assembled based on Tabula Muris Senis. To analyze such large-scale datasets, we develop a network-based computational approach, genes and metabolites (GAM) clustering, for unbiased identification of the key metabolic subnetworks based on transcriptional profiles. We define 9 metabolic subnetworks that encapsulate the metabolic differences within MNP from 38 different tissues. Obtained modules reveal that cholesterol synthesis appears particularly active within the migratory dendritic cells, while glutathione synthesis is essential for cysteinyl leukotriene production by peritoneal and lung macrophages.
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Affiliation(s)
- Anastasiia Gainullina
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Computer Technologies Department, ITMO University, St. Petersburg 197101, Russia; Laboratory of Bioinformatics and Molecular Genetics, Koltzov Institute of Developmental Biology of the Russian Academy of Sciences, Moscow 119334, Russia
| | - Denis A Mogilenko
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Medicine, Department of Pathology, Microbiology, and Immunology, Vanderbilt Center for Immunobiology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Li-Hao Huang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Helena Todorov
- Laboratory of Immunoregulation, Inflammation Research Centre, VIB Ghent University, 9052 Ghent, Belgium
| | - Vipin Narang
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A∗STAR), Singapore 138648, Singapore
| | - Ki-Wook Kim
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Lim Sheau Yng
- Immunology Translational Research Programme, Yong Loo Lin School of Medicine, Department of Microbiology and Immunology, National University of Singapore, Singapore 117545, Singapore; Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore 117545, Singapore
| | - Andrew Kent
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease, Joan and Sanford I. Weill Department of Medicine, Department of Microbiology and Immunology, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA
| | - Baosen Jia
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease, Joan and Sanford I. Weill Department of Medicine, Department of Microbiology and Immunology, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA
| | - Kumba Seddu
- Department of Immunology, Harvard Medical School, Boston, MA 02115, USA
| | - Karen Krchma
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jun Wu
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Karine Crozat
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France
| | - Elena Tomasello
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France
| | - Regine Dress
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A∗STAR), Singapore 138648, Singapore
| | - Peter See
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A∗STAR), Singapore 138648, Singapore
| | - Charlotte Scott
- Laboratory of Immunoregulation, Inflammation Research Centre, VIB Ghent University, 9052 Ghent, Belgium
| | - Sophie Gibbings
- Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA
| | - Geetika Bajpai
- Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Jigar V Desai
- Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Barbara Maier
- Immunology Institute and Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Sébastien This
- Centre International de Recherche en Infectiologie (CIRI), University Lyon, Inserm, U1111, Université Claude Bernard Lyon ,1, CNRS, UMR5308, ENS de Lyon, 69007 Lyon, France
| | - Peter Wang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Stephanie Vargas Aguilar
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France; Center for Regenerative Therapies (CRTD), TU Dresden, 01307 Dresden, Germany; Max-Delbrück-Centrum für Molekulare Medizin in der Helmholtzgemeinschaft (MDC), 13125 Berlin, Germany
| | - Lucie Poupel
- INSERM UMR-S 1166, Sorbonne Université, Hôpital de la Pitié-Salpêtrière, 75013 Paris, France
| | - Sébastien Dussaud
- INSERM UMR-S 1166, Sorbonne Université, Hôpital de la Pitié-Salpêtrière, 75013 Paris, France
| | - Tyng-An Zhou
- Institute of Microbiology and Immunology, National Yang-Ming University, Taipei 112, Taiwan
| | - Veronique Angeli
- Immunology Translational Research Programme, Yong Loo Lin School of Medicine, Department of Microbiology and Immunology, National University of Singapore, Singapore 117545, Singapore; Immunology Programme, Life Sciences Institute, National University of Singapore, Singapore 117545, Singapore
| | - J Magarian Blander
- The Jill Roberts Institute for Research in Inflammatory Bowel Disease, Joan and Sanford I. Weill Department of Medicine, Department of Microbiology and Immunology, Weill Cornell Medicine, Cornell University, New York, NY 10021, USA
| | - Kyunghee Choi
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Marc Dalod
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France
| | - Ivan Dzhagalov
- Institute of Microbiology and Immunology, National Yang-Ming University, Taipei 112, Taiwan
| | - Emmanuel L Gautier
- INSERM UMR-S 1166, Sorbonne Université, Hôpital de la Pitié-Salpêtrière, 75013 Paris, France
| | - Claudia Jakubzick
- Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA
| | - Kory Lavine
- Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, Saint Louis, MO 63110, USA
| | - Michail S Lionakis
- Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Helena Paidassi
- Centre International de Recherche en Infectiologie (CIRI), University Lyon, Inserm, U1111, Université Claude Bernard Lyon ,1, CNRS, UMR5308, ENS de Lyon, 69007 Lyon, France
| | - Michael H Sieweke
- Aix Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, 13288 Marseille, France; Center for Regenerative Therapies (CRTD), TU Dresden, 01307 Dresden, Germany; Max-Delbrück-Centrum für Molekulare Medizin in der Helmholtzgemeinschaft (MDC), 13125 Berlin, Germany
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A∗STAR), Singapore 138648, Singapore
| | - Martin Guilliams
- Laboratory of Immunoregulation, Inflammation Research Centre, VIB Ghent University, 9052 Ghent, Belgium
| | | | - Miriam Merad
- Immunology Institute and Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Gwendalyn J Randolph
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Alexey Sergushichev
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Computer Technologies Department, ITMO University, St. Petersburg 197101, Russia.
| | - Maxim N Artyomov
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
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5
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Abbas A, Vu Manh TP, Valente M, Collinet N, Attaf N, Dong C, Naciri K, Chelbi R, Brelurut G, Cervera-Marzal I, Rauwel B, Davignon JL, Bessou G, Thomas-Chollier M, Thieffry D, Villani AC, Milpied P, Dalod M, Tomasello E. The activation trajectory of plasmacytoid dendritic cells in vivo during a viral infection. Nat Immunol 2020; 21:983-997. [PMID: 32690951 PMCID: PMC7610367 DOI: 10.1038/s41590-020-0731-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [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: 07/26/2019] [Accepted: 06/08/2020] [Indexed: 12/15/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) are a major source of type I interferon (IFN-I). What other functions pDCs exert in vivo during viral infections is controversial, and more studies are needed to understand their orchestration. In the present study, we characterize in depth and link pDC activation states in animals infected by mouse cytomegalovirus by combining Ifnb1 reporter mice with flow cytometry, single-cell RNA sequencing, confocal microscopy and a cognate CD4 T cell activation assay. We show that IFN-I production and T cell activation were performed by the same pDC, but these occurred sequentially in time and in different micro-anatomical locations. In addition, we show that pDC commitment to IFN-I production was marked early on by their downregulation of leukemia inhibitory factor receptor and was promoted by cell-intrinsic tumor necrosis factor signaling. We propose a new model for how individual pDCs are endowed to exert different functions in vivo during a viral infection, in a manner tightly orchestrated in time and space.
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Affiliation(s)
- Abdenour Abbas
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France.,Institut Curie, PSL Research University, Paris, France
| | - Thien-Phong Vu Manh
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Michael Valente
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Nils Collinet
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Noudjoud Attaf
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Chuang Dong
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Karima Naciri
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Rabie Chelbi
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Geoffray Brelurut
- Institut de Biologie de l'ENS, Département de biologie, École normale supérieure, CNRS, INSERM, Université PSL, Paris, France
| | - Inaki Cervera-Marzal
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France.,Eura Nova, Marseille, France
| | - Benjamin Rauwel
- Centre de Physiopathologie Toulouse Purpan, Toulouse, France
| | | | - Gilles Bessou
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Morgane Thomas-Chollier
- Institut de Biologie de l'ENS, Département de biologie, École normale supérieure, CNRS, INSERM, Université PSL, Paris, France
| | - Denis Thieffry
- Institut de Biologie de l'ENS, Département de biologie, École normale supérieure, CNRS, INSERM, Université PSL, Paris, France
| | - Alexandra-Chloé Villani
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.,Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, Boston, MA, USA
| | - Pierre Milpied
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Marc Dalod
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France.
| | - Elena Tomasello
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France.
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Tomasello E, Naciri K, Chelbi R, Bessou G, Fries A, Gressier E, Abbas A, Pollet E, Pierre P, Lawrence T, Vu Manh TP, Dalod M. Molecular dissection of plasmacytoid dendritic cell activation in vivo during a viral infection. EMBO J 2018; 37:embj.201798836. [PMID: 30131424 PMCID: PMC6166132 DOI: 10.15252/embj.201798836] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 07/23/2018] [Accepted: 07/25/2018] [Indexed: 12/13/2022] Open
Abstract
Plasmacytoid dendritic cells (pDC) are the major source of type I interferons (IFN-I) during viral infections, in response to triggering of endosomal Toll-like receptors (TLRs) 7 or 9 by viral single-stranded RNA or unmethylated CpG DNA, respectively. Synthetic ligands have been used to disentangle the underlying signaling pathways. The adaptor protein AP3 is necessary to transport molecular complexes of TLRs, synthetic CpG DNA, and MyD88 into endosomal compartments allowing interferon regulatory factor 7 (IRF7) recruitment whose phosphorylation then initiates IFN-I production. High basal expression of IRF7 by pDC and its further enhancement by positive IFN-I feedback signaling appear to be necessary for robust cytokine production. In contrast, we show here that in vivo during mouse cytomegalovirus (MCMV) infection pDC produce high amounts of IFN-I downstream of the TLR9-to-MyD88-to-IRF7 signaling pathway without requiring IFN-I positive feedback, high IRF7 expression, or AP3-driven endosomal routing of TLRs. Hence, the current model of the molecular requirements for professional IFN-I production by pDC, established by using synthetic TLR ligands, does not strictly apply to a physiological viral infection.
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Affiliation(s)
- Elena Tomasello
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Karima Naciri
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Rabie Chelbi
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Gilles Bessou
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Anissa Fries
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Elise Gressier
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Abdenour Abbas
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Emeline Pollet
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Philippe Pierre
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Toby Lawrence
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Thien-Phong Vu Manh
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Marc Dalod
- Aix Marseille Univ, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Marseille, France
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Ardouin L, Luche H, Chelbi R, Carpentier S, Shawket A, Montanana Sanchis F, Santa Maria C, Grenot P, Alexandre Y, Grégoire C, Fries A, Vu Manh TP, Tamoutounour S, Crozat K, Tomasello E, Jorquera A, Fossum E, Bogen B, Azukizawa H, Bajenoff M, Henri S, Dalod M, Malissen B. Broad and Largely Concordant Molecular Changes Characterize Tolerogenic and Immunogenic Dendritic Cell Maturation in Thymus and Periphery. Immunity 2017; 45:305-18. [PMID: 27533013 DOI: 10.1016/j.immuni.2016.07.019] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Revised: 02/29/2016] [Accepted: 05/25/2016] [Indexed: 12/22/2022]
Abstract
Dendritic cells (DCs) are instrumental in the initiation of T cell responses, but how thymic and peripheral tolerogenic DCs differ globally from Toll-like receptor (TLR)-induced immunogenic DCs remains unclear. Here, we show that thymic XCR1(+) DCs undergo a high rate of maturation, accompanied by profound gene-expression changes that are essential for central tolerance and also happen in germ-free mice. Those changes largely overlap those occurring during tolerogenic and, more unexpectedly, TLR-induced maturation of peripheral XCR1(+) DCs, arguing against the commonly held view that tolerogenic DCs undergo incomplete maturation. Interferon-stimulated gene (ISG) expression was among the few discriminators of immunogenic and tolerogenic XCR1(+) DCs. Tolerogenic XCR1(+) thymic DCs were, however, unique in expressing ISGs known to restrain virus replication. Therefore, a broad functional convergence characterizes tolerogenic and immunogenic XCR1(+) DC maturation in the thymus and periphery, maximizing antigen presentation and signal delivery to developing and to conventional and regulatory mature T cells.
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Affiliation(s)
- Laurence Ardouin
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Hervé Luche
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France; Centre d'Immunophénomique, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Rabie Chelbi
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | | | - Alaa Shawket
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Frédéric Montanana Sanchis
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Camille Santa Maria
- Centre d'Immunophénomique, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Pierre Grenot
- Centre d'Immunophénomique, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Yannick Alexandre
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Claude Grégoire
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Anissa Fries
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Thien-Phong Vu Manh
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Samira Tamoutounour
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Karine Crozat
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Elena Tomasello
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Audrey Jorquera
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Even Fossum
- Institute of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, 0424 Oslo, Norway
| | - Bjarne Bogen
- Institute of Immunology, University of Oslo and Oslo University Hospital Rikshospitalet, 0424 Oslo, Norway
| | | | - Marc Bajenoff
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Sandrine Henri
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Marc Dalod
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France.
| | - Bernard Malissen
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France; Centre d'Immunophénomique, Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France.
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Tomasello E, Pollet E, Vu Manh TP, Uzé G, Dalod M. Harnessing Mechanistic Knowledge on Beneficial Versus Deleterious IFN-I Effects to Design Innovative Immunotherapies Targeting Cytokine Activity to Specific Cell Types. Front Immunol 2014; 5:526. [PMID: 25400632 PMCID: PMC4214202 DOI: 10.3389/fimmu.2014.00526] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 10/07/2014] [Indexed: 12/15/2022] Open
Abstract
Type I interferons (IFN-I) were identified over 50 years ago as cytokines critical for host defense against viral infections. IFN-I promote anti-viral defense through two main mechanisms. First, IFN-I directly reinforce or induce de novo in potentially all cells the expression of effector molecules of intrinsic anti-viral immunity. Second, IFN-I orchestrate innate and adaptive anti-viral immunity. However, IFN-I responses can be deleterious for the host in a number of circumstances, including secondary bacterial or fungal infections, several autoimmune diseases, and, paradoxically, certain chronic viral infections. We will review the proposed nature of protective versus deleterious IFN-I responses in selected diseases. Emphasis will be put on the potentially deleterious functions of IFN-I in human immunodeficiency virus type 1 (HIV-1) infection, and on the respective roles of IFN-I and IFN-III in promoting resolution of hepatitis C virus (HCV) infection. We will then discuss how the balance between beneficial versus deleterious IFN-I responses is modulated by several key parameters including (i) the subtypes and dose of IFN-I produced, (ii) the cell types affected by IFN-I, and (iii) the source and timing of IFN-I production. Finally, we will speculate how integration of this knowledge combined with advanced biochemical manipulation of the activity of the cytokines should allow designing innovative immunotherapeutic treatments in patients. Specifically, we will discuss how induction or blockade of specific IFN-I responses in targeted cell types could promote the beneficial functions of IFN-I and/or dampen their deleterious effects, in a manner adapted to each disease.
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Affiliation(s)
- Elena Tomasello
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
| | - Emeline Pollet
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
| | - Thien-Phong Vu Manh
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
| | - Gilles Uzé
- UMR 5235, Centre National de la Recherche Scientifique (CNRS), University Montpellier II , Montpellier , France
| | - Marc Dalod
- UM2, Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University , Marseille , France ; U1104, Institut National de la Santé et de la Recherche Médicale (INSERM) , Marseille , France ; UMR7280, Centre National de la Recherche Scientifique (CNRS) , Marseille , France
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9
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Tomasello E, Yessaad N, Gregoire E, Hudspeth K, Luci C, Mavilio D, Hardwigsen J, Vivier E. Mapping of NKp46(+) Cells in Healthy Human Lymphoid and Non-Lymphoid Tissues. Front Immunol 2012. [PMID: 23181063 PMCID: PMC3501723 DOI: 10.3389/fimmu.2012.00344] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Understanding Natural Killer (NK) cell anatomical distribution is key to dissect the role of these unconventional lymphocytes in physiological and disease conditions. In mouse, NK cells have been detected in various lymphoid and non-lymphoid organs, while in humans the current knowledge of NK cell distribution at steady state is mainly restricted to lymphoid tissues. The translation to humans of findings obtained in mice is facilitated by the identification of NK cell markers conserved between these two species. The Natural Cytotoxicity Receptor (NCR) NKp46 is a marker of the NK cell lineage evolutionary conserved in mammals. In mice, NKp46 is also present on rare T cell subsets and on a subset of gut Innate Lymphoid Cells (ILCs) expressing the retinoic acid receptor-related orphan receptor γt (RORγt) transcription factor. Here, we documented the distribution and the phenotype of human NKp46+ cells in lymphoid and non-lymphoid tissues isolated from healthy donors. Human NKp46+ cells were found in splenic red pulp, in lymph nodes, in lungs, and gut lamina propria, thus mirroring mouse NKp46+ cell distribution. We also identified a novel cell subset of CD56dimNKp46low cells that includes RORγt+ ILCs with a lineage−CD94−CD117brightCD127bright phenotype. The use of NKp46 thus contributes to establish the basis for analyzing quantitative and qualitative changes of NK cell and ILC subsets in human diseases.
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Affiliation(s)
- Elena Tomasello
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille Université UM2 Marseille, France ; Institut National de la Santé et de la Recherche Medicale, UMR 1104 Marseille, France ; Centre National de la Recherche Scientifique, Unite Mixte de Recherche 7280 Marseille, France
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10
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Luci C, Gaudy-Marqueste C, Rouzaire P, Audonnet S, Cognet C, Hennino A, Nicolas JF, Grob JJ, Tomasello E. Peripheral natural killer cells exhibit qualitative and quantitative changes in patients with psoriasis and atopic dermatitis. Br J Dermatol 2012; 166:789-96. [DOI: 10.1111/j.1365-2133.2012.10814.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Reynders A, Yessaad N, Vu Manh TP, Dalod M, Fenis A, Aubry C, Nikitas G, Escalière B, Renauld JC, Dussurget O, Cossart P, Lecuit M, Vivier E, Tomasello E. Identity, regulation and in vivo function of gut NKp46+RORγt+ and NKp46+RORγt- lymphoid cells. EMBO J 2011; 30:2934-47. [PMID: 21685873 PMCID: PMC3160256 DOI: 10.1038/emboj.2011.201] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.8] [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: 01/24/2011] [Accepted: 05/26/2011] [Indexed: 12/14/2022] Open
Abstract
The gut is a major barrier against microbes and encloses various innate lymphoid cells (ILCs), including two subsets expressing the natural cytotoxicity receptor NKp46. A subset of NKp46(+) cells expresses retinoic acid receptor-related orphan receptor γt (RORγt) and produces IL-22, like lymphoid tissue inducer (LTi) cells. Other NKp46(+) cells lack RORγt and produce IFN-γ, like conventional Natural Killer (cNK) cells. The identity, the regulation and the in vivo functions of gut NKp46(+) ILCs largely remain to be unravelled. Using pan-genomic profiling, we showed here that small intestine (SI) NKp46(+)RORγt(-) ILCs correspond to SI NK cells. Conversely, we identified a transcriptional programme conserved in fetal LTi cells and adult SI NKp46(+)RORγt(+) and NKp46(-)RORγt(+) ILCs. We also demonstrated that the IL-1β/IL-1R1/MyD88 pathway, but not the commensal flora, drove IL-22 production by NKp46(+)RORγt(+) ILCs. Finally, oral Listeria monocytogenes infection induced IFN-γ production in SI NK and IL-22 production in NKp46(+)RORγt(+) ILCs, but only IFN-γ contributed to control bacteria dissemination. NKp46(+) ILC heterogeneity is thus associated with subset-specific transcriptional programmes and effector functions that govern their implication in gut innate immunity.
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Affiliation(s)
- Ana Reynders
- Centre d'Immunologie de Marseille-Luminy, Université de la Mediterannée, Campus du Luminy, Marseille, France
- Institut National de la Santé et de la Recherche Medicale U631, Marseille, France
- Centre National de la Recherche Scientifique, Unite Mixte de Recherche 6102, Marseille, France
| | - Nadia Yessaad
- Centre d'Immunologie de Marseille-Luminy, Université de la Mediterannée, Campus du Luminy, Marseille, France
- Institut National de la Santé et de la Recherche Medicale U631, Marseille, France
- Centre National de la Recherche Scientifique, Unite Mixte de Recherche 6102, Marseille, France
| | - Thien-Phong Vu Manh
- Centre d'Immunologie de Marseille-Luminy, Université de la Mediterannée, Campus du Luminy, Marseille, France
- Institut National de la Santé et de la Recherche Medicale U631, Marseille, France
- Centre National de la Recherche Scientifique, Unite Mixte de Recherche 6102, Marseille, France
| | - Marc Dalod
- Centre d'Immunologie de Marseille-Luminy, Université de la Mediterannée, Campus du Luminy, Marseille, France
- Institut National de la Santé et de la Recherche Medicale U631, Marseille, France
- Centre National de la Recherche Scientifique, Unite Mixte de Recherche 6102, Marseille, France
| | - Aurore Fenis
- Centre d'Immunologie de Marseille-Luminy, Université de la Mediterannée, Campus du Luminy, Marseille, France
- Institut National de la Santé et de la Recherche Medicale U631, Marseille, France
- Centre National de la Recherche Scientifique, Unite Mixte de Recherche 6102, Marseille, France
| | - Camille Aubry
- Unité des Interactions Bactéries-Cellules, Department of Cellular Biology and Infection, Institut Pasteur, Paris, France
- Inserm U604, Paris, France
- INRA USC2020, Paris, France
| | - Georgios Nikitas
- Inserm U604, Paris, France
- Microbes and Host Barriers Group, Department of Infection and Epidemiology, Institut Pasteur, Paris, France
| | - Bertrand Escalière
- Centre d'Immunologie de Marseille-Luminy, Université de la Mediterannée, Campus du Luminy, Marseille, France
- Institut National de la Santé et de la Recherche Medicale U631, Marseille, France
- Centre National de la Recherche Scientifique, Unite Mixte de Recherche 6102, Marseille, France
| | - Jean Christophe Renauld
- Ludwig Institute for Cancer Research Ltd, Experimental Medicine Unit, Universite Catholique de Louvain, Brussels, Belgium
| | - Olivier Dussurget
- Unité des Interactions Bactéries-Cellules, Department of Cellular Biology and Infection, Institut Pasteur, Paris, France
- Inserm U604, Paris, France
- INRA USC2020, Paris, France
| | - Pascale Cossart
- Unité des Interactions Bactéries-Cellules, Department of Cellular Biology and Infection, Institut Pasteur, Paris, France
- Inserm U604, Paris, France
- INRA USC2020, Paris, France
| | - Marc Lecuit
- Inserm U604, Paris, France
- Microbes and Host Barriers Group, Department of Infection and Epidemiology, Institut Pasteur, Paris, France
- Université Paris Descartes, Centre d'Infectiologie Necker-Pasteur, Service des Maladies Infectieuses et Tropicales, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Eric Vivier
- Centre d'Immunologie de Marseille-Luminy, Université de la Mediterannée, Campus du Luminy, Marseille, France
- Institut National de la Santé et de la Recherche Medicale U631, Marseille, France
- Centre National de la Recherche Scientifique, Unite Mixte de Recherche 6102, Marseille, France
- Assistance Publique des Hôpitaux de Marseille, Hôpital de la Conception, Marseille, France
| | - Elena Tomasello
- Centre d'Immunologie de Marseille-Luminy, Université de la Mediterannée, Campus du Luminy, Marseille, France
- Institut National de la Santé et de la Recherche Medicale U631, Marseille, France
- Centre National de la Recherche Scientifique, Unite Mixte de Recherche 6102, Marseille, France
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Tomasello E, Reynders A, Vivier E. A novel mucosal RORγtNKp46 cell subset is a source of interleukin-22. F1000 Biol Rep 2009; 1:28. [PMID: 20948658 PMCID: PMC2924696 DOI: 10.3410/b1-28] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Lymphoid tissue-inducer cells are hematopoietic cells essential for the organogenesis of several lymphoid structures during both fetal and adult life, whereas natural killer cells are key effector lymphocytes of the innate immune system. A series of recent reports has identified RORγt+NKp46+ interleukin-22-producing cells in gut and tonsils that share features with both lymphoid tissue-inducer cells and natural killer cells and that may be involved in mucosal immunity and homeostasis.
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Affiliation(s)
- Elena Tomasello
- Centre d Immunologie de Marseille-Luminy, Université de la Méditerranée, INSERM U631, CNRS UMR 6102, 163 Avenue du Luminy, Case 906, 13288 Marseille CEDEX 09, France
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13
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Hall HTL, Sjölin H, Brauner H, Tomasello E, Dalod M, Vivier E, Höglund P. Increased diabetes development and decreased function of CD4+CD25+ Treg in the absence of a functional DAP12 adaptor protein. Eur J Immunol 2009; 38:3191-9. [PMID: 18925576 DOI: 10.1002/eji.200838259] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Prior to the development of type 1 diabetes, T cells are primed in the pancreatic lymph nodes (PLN) where they interact with APC displaying beta cell-derived peptides. The details concerning the regulation of autoreactive T cell responses in the PLN are unclear. BDC2.5/B6g7 TCR transgenic mice represent a simplified model of type 1 diabetes, in which beta cell-specific CD4+ T cells expressing a diabetogenic transgenic TCR are first activated in the PLN and subsequently home to the pancreas where they mediate killing of beta cells. DNAX-activating protein of 12 kDa (DAP12) is an adaptor molecule carrying an ITAM motif. It associates with receptors on lymphoid and myeloid cells, including APC. We here show that introduction of a DAP12 null mutation in BDC2.5/B6g7 mice accelerated diabetes development and promoted an augmented activation state of PLN T cells expressing the transgenic TCR. Transferred BDC2.5 T cells proliferated more efficiently in the PLN of DAP12-deficient B6g7 recipients, which correlated with a decreased impact of co-transferred BDC2.5+CD4+CD25+ T cells. We propose that signaling through a DAP12-associated receptor on APC facilitates activation of Treg in the PLN and by this contributes to the maintenance of peripheral tolerance to beta cell-derived antigens.
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Affiliation(s)
- Håkan T L Hall
- Department of Microbiology Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden
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Luci C, Reynders A, Ivanov II, Cognet C, Chiche L, Chasson L, Hardwigsen J, Anguiano E, Banchereau J, Chaussabel D, Dalod M, Littman DR, Vivier E, Tomasello E. Influence of the transcription factor RORgammat on the development of NKp46+ cell populations in gut and skin. Nat Immunol 2009; 10:75-82. [PMID: 19029904 DOI: 10.1038/ni.1681] [Citation(s) in RCA: 458] [Impact Index Per Article: 30.5] [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: 08/26/2008] [Accepted: 10/24/2008] [Indexed: 12/14/2022]
Abstract
NKp46+CD3- natural killer lymphocytes isolated from blood, lymphoid organs, lung, liver and uterus can produce granule-dependent cytotoxicity and interferon-gamma. Here we identify in dermis, gut lamina propria and cryptopatches distinct populations of NKp46+CD3- cells with a diminished capacity to degranulate and produce interferon-gamma. In the gut, expression of the transcription factor RORgammat, which is involved in the development of lymphoid tissue-inducer cells, defined a previously unknown subset of NKp46+CD3- lymphocytes. Unlike RORgammat- lamina propria and dermis natural killer cells, gut RORgammat+NKp46+ cells produced interleukin 22. Our data show that lymphoid tissue-inducer cells and natural killer cells shared unanticipated similarities and emphasize the heterogeneity of NKp46+CD3- cells in innate immunity, lymphoid organization and local tissue repair.
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Affiliation(s)
- Carmelo Luci
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Institut National de la Santé et de la Recherche Médicale, U631, 13288 Marseille, France
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15
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Helming L, Tomasello E, Kyriakides TR, Martinez FO, Takai T, Gordon S, Vivier E. Essential role of DAP12 signaling in macrophage programming into a fusion-competent state. Sci Signal 2008; 1:ra11. [PMID: 18957693 DOI: 10.1126/scisignal.1159665] [Citation(s) in RCA: 85] [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] [Indexed: 12/12/2022]
Abstract
Multinucleated giant cells, formed by fusion of macrophages, are a hallmark of granulomatous inflammation. With a genetic approach, we show that signaling through the adaptor protein DAP12 (DNAX activating protein of 12 kD), its associated receptor triggering receptor expressed by myeloid cells 2 (TREM-2), and the downstream protein tyrosine kinase Syk is required for the cytokine-induced formation of giant cells and that overexpression of DAP12 potentiates macrophage fusion. We also present evidence that DAP12 is a general macrophage fusion regulator and is involved in modulating the expression of several macrophage-associated genes, including those encoding known mediators of macrophage fusion, such as DC-STAMP and Cadherin 1. Thus, DAP12 is involved in programming of macrophages through the regulation of gene and protein expression to induce a fusion-competent state.
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Affiliation(s)
- Laura Helming
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
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16
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Luci C, Tomasello E. Natural killer cells: detectors of stress. Int J Biochem Cell Biol 2008; 40:2335-40. [PMID: 18595768 DOI: 10.1016/j.biocel.2008.05.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2008] [Revised: 04/25/2008] [Accepted: 05/02/2008] [Indexed: 11/17/2022]
Abstract
Natural killer (NK) cells are a key component of the innate immune system, as they are able to detect microbe-infected cells, tumors as well as allogeneic cells, without specific sensitization. NK cell effector functions (cytotoxicity, cytokine secretion) are regulated by a wide array of inhibitory and activating receptors. MHC class I molecules are the ligands of most inhibitory receptors, while activating receptors recognize either pathogen-encoded molecules, or self-proteins whose expression is up-regulated upon microbial infection or tumor development. Upon integration of these negative and positive signals, Natural Killer cells can discriminate between healthy "self" (tolerance) and autologous cells undergoing different types of cellular stress or allogeneic cells (immunosurveillance). The knowledge of the different mechanisms of target cell recognition is thus crucial to dissect NK cell involvement in homeostatic and disease conditions as well as to develop novel alternative therapeutic approaches based on NK cell manipulation.
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Affiliation(s)
- Carmelo Luci
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, case 906, Campus de Luminy, 13288 Marseille, France.
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17
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Abstract
Natural killer (NK) cells are large granular lymphocytes of the innate immune system that participate in the early control of microbial infections and cancer. NK cells can induce the death of autologous cells undergoing various forms of stress, recognizing and providing non-microbial 'danger' signals to the immune system. NK cells are widely distributed in lymphoid and non-lymphoid organs. NK cell precursors originate from the bone marrow and go through a complex maturation process that leads to the acquisition of their effector functions, to changes in their expression of integrins and chemotactic receptors, and to their redistribution from the bone marrow and lymph nodes to blood, spleen, liver, and lung. Here, we describe the tissue localization of NK cells, using NKp46 as an NK cell marker, and review the current knowledge on the mechanisms that govern their trafficking in humans and in mice.
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Affiliation(s)
- Claude Grégoire
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Marseille, France
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18
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Walzer T, Chiossone L, Chaix J, Calver A, Carozzo C, Garrigue-Antar L, Jacques Y, Baratin M, Tomasello E, Vivier E. Natural killer cell trafficking in vivo requires a dedicated sphingosine 1-phosphate receptor. Nat Immunol 2007; 8:1337-44. [PMID: 17965716 DOI: 10.1038/ni1523] [Citation(s) in RCA: 302] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Accepted: 09/18/2007] [Indexed: 12/11/2022]
Abstract
Consistent with their function in immune surveillance, natural killer (NK) cells are distributed throughout lymphoid and nonlymphoid tissues. However, the mechanisms governing the steady-state trafficking of NK cells remain unknown. The lysophospholipid sphingosine 1-phosphate (S1P), by binding to its receptor S1P1, regulates the recirculation of T and B lymphocytes. In contrast, S1P5 is detected in the brain and regulates oligodendrocyte migration and survival in vitro. Here we show that S1P5 was also expressed in NK cells in mice and humans and that S1P5-deficient mice had aberrant NK cell homing during steady-state conditions. In addition, we found that S1P5 was required for the mobilization of NK cells to inflamed organs. Our data emphasize distinct mechanisms regulating the circulation of various lymphocyte subsets and raise the possibility that NK cell trafficking may be manipulated by therapies specifically targeting S1P5.
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Affiliation(s)
- Thierry Walzer
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Institut National de la Santé et de la Recherche Médicale, U631, and Centre National de la Recherche Scientifique, UMR6102, Marseille, France.
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19
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Robbins SH, Bessou G, Cornillon A, Zucchini N, Rupp B, Ruzsics Z, Sacher T, Tomasello E, Vivier E, Koszinowski UH, Dalod M. Natural killer cells promote early CD8 T cell responses against cytomegalovirus. PLoS Pathog 2007; 3:e123. [PMID: 17722980 PMCID: PMC1950948 DOI: 10.1371/journal.ppat.0030123] [Citation(s) in RCA: 140] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2007] [Accepted: 07/05/2007] [Indexed: 12/25/2022] Open
Abstract
Understanding the mechanisms that help promote protective immune responses to pathogens is a major challenge in biomedical research and an important goal for the design of innovative therapeutic or vaccination strategies. While natural killer (NK) cells can directly contribute to the control of viral replication, whether, and how, they may help orchestrate global antiviral defense is largely unknown. To address this question, we took advantage of the well-defined molecular interactions involved in the recognition of mouse cytomegalovirus (MCMV) by NK cells. By using congenic or mutant mice and wild-type versus genetically engineered viruses, we examined the consequences on antiviral CD8 T cell responses of specific defects in the ability of the NK cells to control MCMV. This system allowed us to demonstrate, to our knowledge for the first time, that NK cells accelerate CD8 T cell responses against a viral infection in vivo. Moreover, we identify the underlying mechanism as the ability of NK cells to limit IFN-α/β production to levels not immunosuppressive to the host. This is achieved through the early control of cytomegalovirus, which dramatically reduces the activation of plasmacytoid dendritic cells (pDCs) for cytokine production, preserves the conventional dendritic cell (cDC) compartment, and accelerates antiviral CD8 T cell responses. Conversely, exogenous IFN-α administration in resistant animals ablates cDCs and delays CD8 T cell activation in the face of NK cell control of viral replication. Collectively, our data demonstrate that the ability of NK cells to respond very early to cytomegalovirus infection critically contributes to balance the intensity of other innate immune responses, which dampens early immunopathology and promotes optimal initiation of antiviral CD8 T cell responses. Thus, the extent to which NK cell responses benefit the host goes beyond their direct antiviral effects and extends to the prevention of innate cytokine shock and to the promotion of adaptive immunity. To fight viral infections, vertebrates have developed a battery of innate and adaptive immune responses aimed at inhibiting viral replication or at killing infected cells. These responses include the early production of innate antiviral cytokines, especially interferons α and β (IFN-α/β), and the activation of cytotoxic lymphocytes such as the innate natural killer (NK) cells and the adaptive CD8 T cells. While critical for antiviral defense, cytokine or CD8 T cell responses can be detrimental or even fatal to the host when deregulated. Therefore, we need to better understand how the different arms of antiviral immunity are regulated. In particular, NK cells are proposed to play a protective role in a variety of viral infection in humans, but the underlying mechanisms remain poorly understood. Here, in a mouse model of cytomegalovirus infection, we demonstrate that NK cells prevent an excessive production of IFN-α/β and promote more efficient antiviral CD8 T cell responses. We thus show that NK cells can help promote health over disease during viral infections by regulating both innate and adaptive immune responses. It will be important to examine in humans whether NK cells control innate cytokine production to prevent immunopathology and to promote adaptive immunity against herpesviruses, HIV-1, influenza, or SARS.
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Affiliation(s)
- Scott H Robbins
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Marseille, France
- INSERM (U631), Marseille, France
- CNRS (UMR6102), Marseille, France
| | - Gilles Bessou
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Marseille, France
- INSERM (U631), Marseille, France
- CNRS (UMR6102), Marseille, France
| | - Amélie Cornillon
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Marseille, France
- INSERM (U631), Marseille, France
- CNRS (UMR6102), Marseille, France
| | - Nicolas Zucchini
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Marseille, France
- INSERM (U631), Marseille, France
- CNRS (UMR6102), Marseille, France
| | - Brigitte Rupp
- Max von Pettenkofer Institut für Virologie, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Zsolt Ruzsics
- Max von Pettenkofer Institut für Virologie, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Torsten Sacher
- Max von Pettenkofer Institut für Virologie, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Elena Tomasello
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Marseille, France
- INSERM (U631), Marseille, France
- CNRS (UMR6102), Marseille, France
| | - Eric Vivier
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Marseille, France
- INSERM (U631), Marseille, France
- CNRS (UMR6102), Marseille, France
- Assistance Publique-Hôpitaux de Marseille and Hôpital de la Conception, Marseille, France
| | - Ulrich H Koszinowski
- Max von Pettenkofer Institut für Virologie, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Marc Dalod
- Centre d'Immunologie de Marseille-Luminy, Université de la Méditerranée, Marseille, France
- INSERM (U631), Marseille, France
- CNRS (UMR6102), Marseille, France
- * To whom correspondence should be addressed. E-mail:
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20
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French AR, Sjölin H, Kim S, Koka R, Yang L, Young DA, Cerboni C, Tomasello E, Ma A, Vivier E, Kärre K, Yokoyama WM. DAP12 signaling directly augments proproliferative cytokine stimulation of NK cells during viral infections. J Immunol 2007; 177:4981-90. [PMID: 17015680 DOI: 10.4049/jimmunol.177.8.4981] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
NK cells vigorously proliferate during viral infections. During the course of murine CMV infection, this response becomes dominated by the preferential proliferation of NK cells that express the activation receptor Ly49H. The factors driving such selective NK cell proliferation have not been characterized. In this study, we demonstrate that preferential NK cell proliferation is dependent on DAP12-mediated signaling following the binding of Ly49H to its virally encoded ligand, m157. Ly49H signaling through DAP12 appears to directly augment NK cell sensitivity to low concentrations of proproliferative cytokines such as IL-15. The impact of Ly49H-mediated signaling on NK cell proliferation is masked in the presence of high concentrations of proproliferative cytokines that nonselectively drive all NK cells to proliferate.
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MESH Headings
- Adaptor Proteins, Signal Transducing/physiology
- Animals
- Antigens, Ly/metabolism
- Antigens, Ly/physiology
- Cell Proliferation
- Cytokines/physiology
- Herpesviridae Infections/immunology
- Interleukin-15/physiology
- Killer Cells, Natural/cytology
- Killer Cells, Natural/metabolism
- Lectins, C-Type/metabolism
- Lectins, C-Type/physiology
- Mice
- Mice, Knockout
- Muromegalovirus/immunology
- NK Cell Lectin-Like Receptor Subfamily A
- Receptors, Cytokine/metabolism
- Receptors, NK Cell Lectin-Like
- Signal Transduction
- Virus Diseases/immunology
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Affiliation(s)
- Anthony R French
- Division of Pediatric Rheumatology, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA.
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21
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Sjölin H, Robbins SH, Bessou G, Hidmark A, Tomasello E, Johansson M, Hall H, Charifi F, Karlsson Hedestam GB, Biron CA, Kärre K, Höglund P, Vivier E, Dalod M. DAP12 signaling regulates plasmacytoid dendritic cell homeostasis and down-modulates their function during viral infection. J Immunol 2006; 177:2908-16. [PMID: 16920926 DOI: 10.4049/jimmunol.177.5.2908] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
DAP12 is an ITAM-containing adaptor molecule conveying activating properties to surface receptors on many cell types. We show here that DAP12 paradoxically down-modulates plasmacytoid dendritic cell (pDC) cytokine production in vivo during murine CMV (MCMV) infection. Higher levels of IFN-alphabeta and IL-12 were detected upon MCMV infection or CpG treatment in DAP12-deficient (DAP12(o)) mice as compared with wild-type (WT) mice. This resulted from altered homeostasis and enhanced responsiveness of pDCs in DAP12(o) animals. Increased numbers of pDCs were observed in the periphery of both naive and MCMV-infected DAP12(o) mice. A higher proportion of pDCs was activated in infected DAP12(o) mice, as demonstrated by intracellular staining using an optimized protocol for simultaneous detection of IFN-alpha and IFN-beta. The homeostasis of WT and DAP12(o) pDCs did not differ in mixed bone marrow chimeric mice. In addition, a similar efficiency of pDC differentiation was observed in vitro in Fms-like tyrosine kinase receptor 3 ligand cultures of WT and DAP12(o) bone marrow cells. This suggests that DAP12 signaling effects on pDC homeostasis are indirect. In contrast, in response to CpG, DAP12-mediated effects on both IL-12 and IFN-alphabeta production were intrinsic to the pDCs. However, in response to MCMV, only IL-12 but not IFN-alphabeta production was affected by pDC-intrinsic DAP12 signaling. Thus, DAP12 signaling in pDCs can mediate different regulatory effects on their functions, depending on the mechanisms of pDC activation. The potential implications of the regulation of pDC functions by DAP12 for promoting health over disease are discussed.
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Affiliation(s)
- Hanna Sjölin
- Microbiology and Tumor Biology Center, Karolinska Institute, Stockholm, Sweden
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22
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Chiesa S, Mingueneau M, Fuseri N, Malissen B, Raulet DH, Malissen M, Vivier E, Tomasello E. Multiplicity and plasticity of natural killer cell signaling pathways. Blood 2006; 107:2364-72. [PMID: 16291591 PMCID: PMC1895728 DOI: 10.1182/blood-2005-08-3504] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2005] [Accepted: 10/24/2005] [Indexed: 11/20/2022] Open
Abstract
Natural killer (NK) cells express an array of activating receptors that associate with DAP12 (KARAP), CD3zeta, and/or FcRgamma ITAM (immunoreceptor tyrosine-based activation motif)-bearing signaling subunits. In T and mast cells, ITAM-dependent signals are integrated by critical scaffolding elements such as LAT (linker for activation of T cells) and NTAL (non-T-cell activation linker). Using mice that are deficient for ITAM-bearing molecules, LAT or NTAL, we show that NK cell cytotoxicity and interferon-gamma secretion are initiated by ITAM-dependent and -independent as well as LAT/NTAL-dependent and -independent pathways. The role of these various signaling circuits depends on the target cell as well as on the activation status of the NK cell. The multiplicity and the plasticity of the pathways that initiate NK cell effector functions contrast with the situation in T cells and B cells and provide an explanation for the resiliency of NK cell effector functions to various pharmacologic inhibitors and genetic mutations in signaling molecules.
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Affiliation(s)
- Sabrina Chiesa
- Centre d'Immunologie de Marseille-Luminy, INSERM/CNRS, Université de la Méditerranée, Marseille Cedex 09, France
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23
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Taieb J, Chaput N, Ménard C, Apetoh L, Ullrich E, Bonmort M, Péquignot M, Casares N, Terme M, Flament C, Opolon P, Lecluse Y, Métivier D, Tomasello E, Vivier E, Ghiringhelli F, Martin F, Klatzmann D, Poynard T, Tursz T, Raposo G, Yagita H, Ryffel B, Kroemer G, Zitvogel L. A novel dendritic cell subset involved in tumor immunosurveillance. Nat Med 2006; 12:214-9. [PMID: 16444265 DOI: 10.1038/nm1356] [Citation(s) in RCA: 290] [Impact Index Per Article: 16.1] [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: 07/28/2005] [Accepted: 12/05/2005] [Indexed: 12/20/2022]
Abstract
The interferon (IFN)-gamma-induced TRAIL effector mechanism is a vital component of cancer immunosurveillance by natural killer (NK) cells in mice. Here we show that the main source of IFN-gamma is not the conventional NK cell but a subset of B220(+)Ly6C(-) dendritic cells, which are atypical insofar as they express NK cell-surface molecules. Upon contact with a variety of tumor cells that are poorly recognized by NK cells, B220(+)NK1.1(+) dendritic cells secrete high levels of IFN-gamma and mediate TRAIL-dependent lysis of tumor cells. Adoptive transfer of these IFN-producing killer dendritic cells (IKDCs) into tumor-bearing Rag2(-/-)Il2rg(-/-) mice prevented tumor outgrowth, whereas transfer of conventional NK cells did not. In conclusion, we identified IKDCs as pivotal sensors and effectors of the innate antitumor immune response.
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MESH Headings
- Adoptive Transfer
- Animals
- Antigen Presentation
- Antigens, Ly
- Antigens, Surface/metabolism
- Apoptosis Regulatory Proteins/immunology
- CD11c Antigen/metabolism
- Cell Line, Tumor
- Cytotoxicity, Immunologic
- DNA-Binding Proteins/deficiency
- DNA-Binding Proteins/genetics
- Dendritic Cells/classification
- Dendritic Cells/immunology
- Dendritic Cells/ultrastructure
- Female
- Interferon-gamma/biosynthesis
- Interleukin Receptor Common gamma Subunit
- Killer Cells, Natural/immunology
- Lectins, C-Type/metabolism
- Leukocyte Common Antigens/metabolism
- Membrane Glycoproteins/immunology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Nude
- Microscopy, Electron
- NK Cell Lectin-Like Receptor Subfamily B
- Neoplasms, Experimental/immunology
- Receptors, Interleukin/deficiency
- Receptors, Interleukin/genetics
- TNF-Related Apoptosis-Inducing Ligand
- Tumor Necrosis Factor-alpha/immunology
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Affiliation(s)
- Julien Taieb
- ERM0208 INSERM, Faculté de Médecine Kremlin Bicêtre, Institut Gustave Roussy, Villejuif, France
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24
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Orabona C, Tomasello E, Fallarino F, Bianchi R, Volpi C, Bellocchio S, Romani L, Fioretti MC, Vivier E, Puccetti P, Grohmann U. Enhanced tryptophan catabolism in the absence of the molecular adapter DAP12. Eur J Immunol 2005; 35:3111-8. [PMID: 16206234 DOI: 10.1002/eji.200535289] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
DAP12 is an immunoreceptor tyrosine-based activation motif-bearing membrane adapter molecule expressed by different cell types. Although several receptors associate with DAP12 in murine dendritic cells (DC), the function of these receptors is as yet unknown. Here we report that splenic mature DC with DAP12 overexpression are characterized by an impaired tolerogenic potential. In contrast, inhibition of DAP12 function results in enhanced tolerogenesis and constitutive expression of immunosuppressive tryptophan catabolism mediated by indoleamine 2,3-dioxygenase (IDO). Increased resistance to experimental encephalomyelitis is observed in DAP12 knockin mice, which is dependent on IDO expression. Therefore, DAP12-related receptors act as negative regulators of IDO-mediated tolerance in vivo.
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Affiliation(s)
- Ciriana Orabona
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
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25
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26
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Abstract
The signaling adaptor protein KARAP/DAP12/TYROBP (killer cell activating receptor-associated protein / DNAX activating protein of 12 kDa / tyrosine kinase binding protein) belongs to the family of transmembrane polypeptides bearing an intracytoplasmic immunoreceptor tyrosine-based activation motif (ITAM). This adaptor, initially characterized in NK cells, is associated with multiple cell-surface activating receptors expressed in both lymphoid and myeloid lineages. We review here the main features of KARAP/DAP12, describing findings from its identification to recently published data, showing its involvement in a broad array of biological functions. KARAP/DAP12 is a wiring component for NK cell anti-viral function (e.g. mouse cytomegalovirus via its association with mouse Ly49H) and NK cell anti-tumoral function (e.g. via its association with mouse NKG2D or human NKp44). KARAP/DAP12 is also involved in inflammatory reactions via its coupling to myeloid receptors, such as the triggering receptors expressed by myeloid cells (TREM) displayed by neutrophils, monocytes/macrophages and dendritic cells. Finally, bone remodeling and brain function are also dependent upon the integrity of KARAP/DAP12 signals, as shown by the analysis of KARAP/DAP12-deficient mice and KARAP/DAP12-deficient Nasu-Hakola patients.
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Affiliation(s)
- Elena Tomasello
- Laboratory of NK cells and Innate Immunity, Centre d'Immunologie de Marseille-Luminy, INSERM - CNRS - Université de la Méditerranée, Marseille, France.
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27
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Roumier A, Béchade C, Poncer JC, Smalla KH, Tomasello E, Vivier E, Gundelfinger ED, Triller A, Bessis A. Impaired synaptic function in the microglial KARAP/DAP12-deficient mouse. J Neurosci 2005; 24:11421-8. [PMID: 15601948 PMCID: PMC6730361 DOI: 10.1523/jneurosci.2251-04.2004] [Citation(s) in RCA: 167] [Impact Index Per Article: 8.8] [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: 01/21/2023] Open
Abstract
Several proteins are expressed in both immune and nervous systems. However, their putative nonimmune functions in the brain remain poorly understood. KARAP/DAP12 is a transmembrane polypeptide associated with cell-surface receptors in hematopoeitic cells. Its mutation in humans induces Nasu-Hakola disease, characterized by presenile dementia and demyelinization. However, alteration of white matter occurs months after the onset of neuropsychiatric symptoms, suggesting that other neuronal alterations occur in the early phases of the disease. We hypothesized that KARAP/DAP12 may impact synaptic function. In mice deficient for KARAP/DAP12 function, long-term potentiation was enhanced and was partly NMDA receptor (NMDAR) independent. This effect was accompanied by changes in synaptic glutamate receptor content, as detected by the increased rectification of AMPA receptor EPSCs and increased sensitivity of NMDAR EPSCs to ifenprodil. Biochemical analysis of synaptic proteins confirmed these electrophysiological data. In mutants, the AMPA receptor GluR2 subunit expression was decreased only in the postsynaptic densities but not in the whole membrane fraction, demonstrating specific impairment of synaptic receptor accumulation. Alteration of the BNDF-tyrosine kinase receptor B (TrkB) signaling in the mutant was demonstrated by the dramatic decrease of synaptic TrkB with no change in other regulatory or scaffolding proteins. Finally, KARAP/DAP12 was detected only in microglia but not in neurons, astrocytes, or oligodendrocytes. KARAP/DAP12 may thus alter microglial physiology and subsequently synaptic function and plasticity through a novel microglia-neuron interaction.
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Affiliation(s)
- Anne Roumier
- Laboratoire de Biologie Cellulaire de la Synapse Normale et Pathologique, Institut National de la Santé et de la Recherche Médicale (INSERM) U497, Ecole Normale Supérieure, 75230 Paris Cedex 05, France
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28
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Coudert JD, Zimmer J, Tomasello E, Cebecauer M, Colonna M, Vivier E, Held W. Altered NKG2D function in NK cells induced by chronic exposure to NKG2D ligand-expressing tumor cells. Blood 2005; 106:1711-7. [PMID: 15886320 DOI: 10.1182/blood-2005-03-0918] [Citation(s) in RCA: 168] [Impact Index Per Article: 8.8] [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: 01/07/2023] Open
Abstract
NKG2D is an activation receptor that allows natural killer (NK) cells to detect diseased host cells. The engagement of NKG2D with corresponding ligand results in surface modulation of the receptor and reduced function upon subsequent receptor engagement. However, it is not clear whether in addition to modulation the NKG2D receptor complex and/or its signaling capacity is preserved. We show here that the prolonged encounter with tumor cell-bound, but not soluble, ligand can completely uncouple the NKG2D receptor from the intracellular mobilization of calcium and the exertion of cell-mediated cytolysis. However, cytolytic effector function is intact since NKG2D ligand-exposed NK cells can be activated via the Ly49D receptor. While NKG2D-dependent cytotoxicity is impaired, prolonged ligand exposure results in constitutive interferon gamma (IFNgamma) production, suggesting sustained signaling. The functional changes are associated with a reduced presence of the relevant signal transducing adaptors DNAX-activating protein of 10 kDa (DAP-10) and killer cell activating receptor-associated protein/DNAX-activating protein of 12 kDa (KARAP/DAP-12). That is likely the consequence of constitutive NKG2D engagement and signaling, since NKG2D function and adaptor expression is restored to normal when the stimulating tumor cells are removed. Thus, the chronic exposure to tumor cells expressing NKG2D ligand alters NKG2D signaling and may facilitate the evasion of tumor cells from NK cell reactions.
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Affiliation(s)
- Jérôme D Coudert
- Ludwig Institute for Cancer Research, Lausanne Branch, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
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29
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Abstract
NK cells are equipped with multiple activating and inhibitory cell surface receptors whose engagement regulate NK cell effector function (i.e. cytotoxicity as well as chemokine and cytokine production). Several components (adaptors, effector molecules) that participate to NK cell signalling pathways have been described. Yet, the spatio-temporal organisation of these pathways is still poorly understood. In addition, the mechanisms that integrate several simultaneous input signals in NK cells remain to be elucidated.
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Affiliation(s)
- Sabrina Chiesa
- Centre d'Immunologie de Marseille-Luminy, INSERM-CNRS-Université de la Méditerranée, Campus de Luminy, Case 906, 13288 Marseille Cedex 09, France
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30
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Chiesa S, Tomasello E, Vivier E, Vély F. Corrigendum to “Coordination of activating and inhibitory signals in natural killer cells” [Mol. Immunol. 42 (2005) 477–484]. Mol Immunol 2005. [DOI: 10.1016/j.molimm.2005.01.001] [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: 10/25/2022]
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31
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Nataf S, Anginot A, Vuaillat C, Malaval L, Fodil N, Chereul E, Langlois JB, Dumontel C, Cavillon G, Confavreux C, Mazzorana M, Vico L, Belin MF, Vivier E, Tomasello E, Jurdic P. Brain and bone damage in KARAP/DAP12 loss-of-function mice correlate with alterations in microglia and osteoclast lineages. Am J Pathol 2005; 166:275-86. [PMID: 15632019 PMCID: PMC1602283 DOI: 10.1016/s0002-9440(10)62251-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Human polycystic lipomembraneous osteodysplasia with sclerosing leukoencephalopathy, also known as Nasu-Hakola disease, has been described to be associated with mutations affecting the immunoreceptor tyrosine-based activation motif-bearing KARAP/DAP12 immunoreceptor gene. Patients present bone fragilities and severe neurological alterations leading to presenile dementia. Here we investigated whether the absence of KARAP/DAP12-mediated signals in loss-of-function (KDelta75) mice also leads to bone and central nervous system pathological features. Histological analysis of adult KDelta75 mice brains revealed a diffuse hypomyelination predominating in anterior brain regions. As this was not accompanied by oligodendrocyte degeneration or microglial cell activation it suggests a developmental defect of myelin formation. Interestingly, in postnatal KDelta75 mice, we observed a dramatic reduction in microglial cell numbers similar to in vitro microglial cell differentiation impairment. Our results raise the intriguing possibility that defective microglial cell differentiation might be responsible for abnormal myelin development. Histomorphometry revealed that bone remodeling is also altered, because of a resorption defect, associated with a severe block of in vitro osteoclast differentiation. In addition, we show that, among monocytic lineages, KARAP/DAP12 specifically controls microglial and osteoclast differentiation. Our results confirm that KARAP/DAP12-mediated signals play an important role in the regulation of both brain and bone homeostasis. Yet, important differences exist between the symptoms observed in Nasu-Hakola patients and KDelta75 mice.
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32
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Anfossi N, Robbins SH, Ugolini S, Georgel P, Hoebe K, Bouneaud C, Ronet C, Kaser A, DiCioccio CB, Tomasello E, Blumberg RS, Beutler B, Reiner SL, Alexopoulou L, Lantz O, Raulet DH, Brossay L, Vivier E. Expansion and Function of CD8+T Cells Expressing Ly49 Inhibitory Receptors Specific for MHC Class I Molecules. J Immunol 2004; 173:3773-82. [PMID: 15356124 DOI: 10.4049/jimmunol.173.6.3773] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
MHC class I-specific Ly49 inhibitory receptors regulate NK cell activation, thereby preventing autologous damage to normal cells. Ly49 receptors are also expressed on a subset of CD8+ T cells whose origin and function remain unknown. We report here that, despite their phenotypic and cytolytic similarities, Ly49+CD8+ T cells and conventional Ly49-CD44high memory-phenotype CD8+ T cells present strikingly distinct features. First, under steady state conditions Ly49+CD8+ T cells are poor cytokine producers (TNF-alpha and IFN-gamma) upon TCR triggering. Second, Ly49+CD8+ T cells are not induced upon various settings of Ag immunization or microbial challenge. However, Ly49 can be induced on a fraction of self-specific CD8+ T cells if CD4+ T cells are present. Finally, the size of the Ly49+CD8+ T cell subset is selectively reduced in the absence of STAT1. These results indicate that Ly49 expression is associated with a differentiation program of cytolytic CD8+ T cells triggered upon chronic antigenic exposure. They further suggest that the size of the Ly49+CD8+ T cell subset marks a history of CD8+ T cell activation that might preferentially result from endogenous inducers of inflammation rather than from microbial infections.
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MESH Headings
- Animals
- Antigens, Ly/biosynthesis
- Antigens, Ly/physiology
- Bystander Effect/immunology
- Cell Differentiation/immunology
- Clone Cells
- Cytotoxicity, Immunologic
- Epitopes, T-Lymphocyte/biosynthesis
- Epitopes, T-Lymphocyte/physiology
- Female
- Histocompatibility Antigens Class I/immunology
- Lectins, C-Type
- Lymphocyte Activation/immunology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Receptors, Antigen, T-Cell/physiology
- Receptors, NK Cell Lectin-Like
- T-Lymphocyte Subsets/immunology
- T-Lymphocyte Subsets/metabolism
- T-Lymphocytes, Cytotoxic/cytology
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/metabolism
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
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Affiliation(s)
- Nicolas Anfossi
- Centre d'Immunologie de Marseille-Luminy, Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de la Méditerranée, Campus de Luminy, Marseille, France
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33
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Terme M, Tomasello E, Maruyama K, Crépineau F, Chaput N, Flament C, Marolleau JP, Angevin E, Wagner EF, Salomon B, Lemonnier FA, Wakasugi H, Colonna M, Vivier E, Zitvogel L. IL-4 confers NK stimulatory capacity to murine dendritic cells: a signaling pathway involving KARAP/DAP12-triggering receptor expressed on myeloid cell 2 molecules. J Immunol 2004; 172:5957-66. [PMID: 15128777 DOI: 10.4049/jimmunol.172.10.5957] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Dendritic cells (DC) regulate NK cell functions, but the signals required for the DC-mediated NK cell activation, i.e., DC-activated NK cell (DAK) activity, remain poorly understood. Upon acute inflammation mimicked by LPS or TNF-alpha, DC undergo a maturation process allowing T and NK cell activation in vitro. Chronic inflammation is controlled in part by Th2 cytokines. In this study, we show that IL-4 selectively confers to DC NK but not T cell stimulatory capacity. IL-4 is mandatory for mouse bone marrow-derived DC grown in GM-CSF (DC(GM/IL-4)) to promote NK cell activation in the draining lymph nodes. IL-4-mediated DAK activity depends on the KARAP/DAP12-triggering receptor expressed on myeloid cell 2 signaling pathway because: 1) gene targeting of the adaptor molecule KARAP/DAP12, a transmembrane polypeptide with an intracytoplasmic immunoreceptor tyrosine-based activation motif, suppresses the DC(GM/IL-4) capacity to activate NK cells, and 2) IL-4-mediated DAK activity is significantly blocked by soluble triggering receptor expressed on myeloid cell 2 Fc molecules. These data outline a novel role for Th2 cytokines in the regulation of innate immune responses through triggering receptors expressed on myeloid cells.
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MESH Headings
- Adaptor Proteins, Signal Transducing
- Adaptor Proteins, Vesicular Transport/biosynthesis
- Adaptor Proteins, Vesicular Transport/physiology
- Adoptive Transfer
- Animals
- Cell Communication/genetics
- Cell Communication/immunology
- Cells, Cultured
- Coculture Techniques
- Cytotoxicity, Immunologic/genetics
- Cytotoxicity, Immunologic/immunology
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Dendritic Cells/transplantation
- Female
- Inflammation/genetics
- Inflammation/immunology
- Interleukin-4/physiology
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Lipopolysaccharides/pharmacology
- Lymphocyte Activation/genetics
- Lymphocyte Activation/immunology
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/physiology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Nude
- Mice, SCID
- Receptors, Immunologic/biosynthesis
- Receptors, Immunologic/genetics
- Receptors, Immunologic/physiology
- Signal Transduction/genetics
- Signal Transduction/immunology
- Tumor Necrosis Factor-alpha/pharmacology
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Affiliation(s)
- Magali Terme
- ERM0208 Institut National de la Santé et de la Recherche Médicale, Department of Clinical Biology, Institut Gustave Roussy, Villejuif, France
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34
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Oberg L, Johansson S, Michaëlsson J, Tomasello E, Vivier E, Kärre K, Höglund P. Loss or mismatch of MHC class I is sufficient to trigger NK cell-mediated rejection of resting lymphocytes in vivo - role of KARAP/DAP12-dependent and -independent pathways. Eur J Immunol 2004; 34:1646-53. [PMID: 15162434 DOI: 10.1002/eji.200424913] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [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: 12/26/2022]
Abstract
A prediction from the "missing self" hypothesis is that down-regulation of MHC class I on resting hematopoietic cells should be sufficient to make them susceptible to NK cell killing. Using a method enabling kinetic and quantitative assessments of NK cell-mediated rejection responses in vivo, we here show that resting hematopoietic cells from beta(2)-microglobulin-deficient (beta(2)m(-/-)) mice were rapidly rejected in unmanipulated C57BL/6 (B6) mice. In situations of allelic MHC class I mismatches rejection occurred but required longer time. beta(2)m(-/-) donor cells pre-activated with concanavalin A were more efficiently eliminated compared to resting cells, as were MHC(-) tumor cells. When recipient mice were pretreated with an IFN inducer to activate NK cells, rejection was also enhanced. The signaling adaptor KARAP/DAP12 was dispensable for rejection of beta(2)m(-/-) cells (lacking MHC) but critical for rejection of BALB/c cells (mismatched MHC) in unmanipulated B6 recipients. In contrast, B6 recipients with pre-activated NK cells rejected BALB/c cells in a KARAP/DAP12-independent fashion. Loss or mismatch of MHC class I in resting cells was thus sufficient to convey susceptibility to NK cell rejection. However, activation of the effector or the target enhanced rejection and shifted the balance between different signaling pathways involved.
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Affiliation(s)
- Linda Oberg
- Microbiology and Tumor Biology Center, Karolinska Institutet, Stockholm, Sweden.
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35
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Anfossi N, Lucas M, Diefenbach A, Bühring HJ, Raulet D, Tomasello E, Vivier E. Contrasting roles of DAP10 and KARAP/DAP12 signaling adaptors in activation of the RBL-2H3 leukemic mast cell line. Eur J Immunol 2004; 33:3514-22. [PMID: 14635062 DOI: 10.1002/eji.200324573] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A common feature of hematopoietic activating immunoreceptors resides in their association at the cell surface with transmembrane signaling adaptors. Several adaptors, such as the CD3 molecules, FcRgamma and KARAP/DAP12, harbor intracytoplasmic immunoreceptor tyrosine-based activation motifs (ITAM) that activate Syk-family protein tyrosine kinases. In contrast, another transmembrane adaptor, DAP10, bears a YxxM motif that delivers signals by activation of lipid kinase pathways. We show here that the human signal-regulatory protein SIRPbeta1 can associate with both DAP10 and KARAP/DAP12 in a model of RBL-2H3 cell transfectants. In association with KARAP/DAP12, SIRPbeta1 complexes are capable of inducing serotonin release and tumor necrosis factor (TNF) secretion. By contrast,in the absence of KARAP/DAP12, engagement of SIRPbeta1:DAP10 complexes does not lead to detectable serotonin release or TNF secretion by RBL-2H3 transfectants. However, triggering of SIRPbeta1:DAP10 complexes co-stimulates RBL-2H3 effector function induced by sub-optimal stimulation of the endogenous FcepsilonRI complex. Therefore, we report here a cellular model in which the association of a cell surface receptor with various signaling adaptors dictates the co-stimulatory or the direct stimulatory properties of the complex.
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MESH Headings
- Adaptor Proteins, Signal Transducing
- Animals
- Antigens, Differentiation
- Cell Line, Tumor
- Dimerization
- Humans
- Mast Cells/metabolism
- Membrane Glycoproteins/metabolism
- Membrane Proteins/metabolism
- Membrane Proteins/physiology
- Neural Cell Adhesion Molecule L1/metabolism
- Rats
- Receptors, Antigen, T-Cell/metabolism
- Receptors, Antigen, T-Cell/physiology
- Receptors, Cell Surface
- Receptors, IgG/metabolism
- Receptors, Immunologic/physiology
- Receptors, KIR
- Transfection
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Affiliation(s)
- Nicolas Anfossi
- Centre d'Immunologie de Marseille-Luminy, CNRS-INSERM-Université de la Méditerranée, Marseille, France
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36
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Diefenbach A, Tomasello E, Lucas M, Jamieson AM, Hsia JK, Vivier E, Raulet DH. Selective associations with signaling proteins determine stimulatory versus costimulatory activity of NKG2D. Nat Immunol 2002; 3:1142-9. [PMID: 12426565 DOI: 10.1038/ni858] [Citation(s) in RCA: 363] [Impact Index Per Article: 16.5] [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: 08/17/2002] [Accepted: 10/07/2002] [Indexed: 11/08/2022]
Abstract
Optimal lymphocyte activation requires the simultaneous engagement of stimulatory and costimulatory receptors. Stimulatory immunoreceptors are usually composed of a ligand-binding transmembrane protein and noncovalently associated signal-transducing subunits. Here, we report that alternative splicing leads to two distinct NKG2D polypeptides that associate differentially with the DAP10 and KARAP (also known as DAP12) signaling subunits. We found that differential expression of these isoforms and of signaling proteins determined whether NKG2D functioned as a costimulatory receptor in the adaptive immune system (CD8+ T cells) or as both a primary recognition structure and a costimulatory receptor in the innate immune system (natural killer cells and macrophages). This strategy suggests a rationale for the multisubunit structure of stimulatory immunoreceptors.
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Affiliation(s)
- Andreas Diefenbach
- Department of Molecular and Cell Biology and Cancer Research Laboratory, University of California, Berkeley, CA 94720-3200, USA
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37
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Lucas M, Daniel L, Tomasello E, Guia S, Horschowski N, Aoki N, Figarella-Branger D, Gomez S, Vivier E. Massive inflammatory syndrome and lymphocytic immunodeficiency in KARAP/DAP12-transgenic mice. Eur J Immunol 2002; 32:2653-63. [PMID: 12207350 DOI: 10.1002/1521-4141(200209)32:9<2653::aid-immu2653>3.0.co;2-v] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
KARAP/DAP12 is a broadly distributed transmembrane signaling polypeptide with an immunoreceptor tyrosine-based activation motif, and is non-covalently associated with a variety of activating surface receptors. We report here the characterization of transgenic mice that overexpress KARAP/DAP12 polypeptides in both myeloid and lymphoid compartments. KARAP/DAP12-transgenic mice present, in a transgene dose-dependent manner, a complex phenotype characterized by two independent and spontaneous hematological abnormalities: (i) a severe lymphopenia and (ii) a massive inflammatory syndrome associated with neutrophilia and lung infiltration by multinucleated macrophages. These myeloid abnormalities observed in KARAP/DAP12-transgenic mice indicate that KARAP/DAP12-driven signals are critically involved in inflammation, and constitute an essential target to control the resolution of inflammatory disorders based on monocytes/macrophages and neutrophils.
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MESH Headings
- Adaptor Proteins, Signal Transducing
- Animals
- Bone Marrow/metabolism
- Bone Marrow/pathology
- Gene Expression
- Genetic Predisposition to Disease
- Hematopoiesis
- Humans
- Inflammation/genetics
- Inflammation/pathology
- Lipopolysaccharides/toxicity
- Lung/pathology
- Lymphoid Tissue/metabolism
- Lymphoid Tissue/pathology
- Lymphopenia/genetics
- Lymphopenia/pathology
- Macrophages/pathology
- Membrane Proteins
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Neutrophils/pathology
- Receptors, Immunologic/deficiency
- Receptors, Immunologic/genetics
- Receptors, Immunologic/physiology
- Shock, Septic/chemically induced
- Shock, Septic/immunology
- Shock, Septic/pathology
- Wasting Syndrome/genetics
- Wasting Syndrome/pathology
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Affiliation(s)
- Mathias Lucas
- Centre d'Immunologie de Marseille-Luminy, CNRS-INSERM-Université de la Méditerranée, Campus de Luminy, France
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38
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Abstract
NKG2D is an activating cell surface receptor expressed on a wide range of immune effector cells including NK cells, NKT cells, gammadelta T cells as well as CD8(+) alphabeta T cells. Recent data indicate two major features: first, that human (MICA, MICB and ULBP) and mouse (Rae1 and H60) NKG2D ligands can be induced and/or upregulated upon cellular distress; and second, that on T cells NKG2D serves as a co-stimulation molecule for TCR triggering, whereas on NK cells NKG2D may act as a primary recognition structure.
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Affiliation(s)
- Eric Vivier
- Centre d'Immunologie de Marseille-Luminy, CNRS-INSERM-Université de la Méditerrannée, Parc Scientifique de Luminy, Case 906, 13288, Cedex 09, Marseille, France.
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39
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Sjölin H, Tomasello E, Mousavi-Jazi M, Bartolazzi A, Kärre K, Vivier E, Cerboni C. Pivotal role of KARAP/DAP12 adaptor molecule in the natural killer cell-mediated resistance to murine cytomegalovirus infection. J Exp Med 2002; 195:825-34. [PMID: 11927627 PMCID: PMC2193729 DOI: 10.1084/jem.20011427] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Natural killer (NK) cells are major contributors to early defense against infections. Their effector functions are controlled by a balance between activating and inhibiting signals. To date, however, the involvement of NK cell activating receptors and signaling pathways in the defense against pathogens has not been extensively investigated. In mice, several NK cell activating receptors are coexpressed with and function through the immunoreceptor tyrosine-based activation motif (ITAM)-bearing molecule KARAP/DAP12. Here, we have analyzed the role of KARAP/DAP12 in the early antiviral response to murine cytomegalovirus (MCMV). In KARAP/DAP12 mutant mice bearing a nonfunctional ITAM, we found a considerable increase in viral titers in the spleen (30-40-fold) and in the liver (2-5-fold). These effects were attributed to NK cells. The formation of hepatic inflammatory foci appeared similar in wild-type and mutant mice, but the latter more frequently developed severe hepatitis with large areas of focal necrosis. Moreover, the percentage of hepatic NK cells producing interferon gamma was reduced by 56 +/- 22% in the absence of a functional KARAP/DAP12. This is the first study that shows a crucial role for a particular activating signaling pathway, in this case the one induced through KARAP/DAP12, in the NK cell-mediated resistance to an infection. Our results are discussed in relation to recent reports demonstrating that innate resistance to MCMV requires the presence of NK cells expressing the KARAP/DAP12-associated receptor Ly49H.
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Affiliation(s)
- Hanna Sjölin
- Microbiology and Tumor Biology Center, Karolinska Institute, S 171 77 Stockholm, Sweden
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40
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Colucci F, Schweighoffer E, Tomasello E, Turner M, Ortaldo JR, Vivier E, Tybulewicz VLJ, Di Santo JP. Natural cytotoxicity uncoupled from the Syk and ZAP-70 intracellular kinases. Nat Immunol 2002; 3:288-94. [PMID: 11836527 DOI: 10.1038/ni764] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.6] [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: 01/31/2023]
Abstract
The intracellular signals that trigger natural cytotoxicity have not been clearly determined. The Syk and ZAP-70 tyrosine kinases are essential for cellular activation initiated by B and T cell antigen receptors and may drive natural killer (NK) cell cytotoxicity via receptors bearing immunoreceptor tyrosine-based activation motifs (ITAMs). However, we found that, unlike B and T cells, NK cells developed in Syk-/-ZAP-70-/- mice and, despite their nonfunctional ITAMs, lysed various tumor targets in vitro and eliminated tumor cells in vivo, including those without NKG2D ligands. The simultaneous inhibition of phosphatidyl inositol 3 kinase and Src kinases abrogated the cytolytic activity of Syk-/-ZAP-70-/- NK cells and strongly reduced that of wild-type NK cells. This suggests that distinct and redundant signaling pathways act synergistically to trigger natural cytotoxicity.
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Affiliation(s)
- Francesco Colucci
- Laboratory for Cytokines and Lymphoid Development, The Pasteur Institute, Paris, France.
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41
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Tomasello E, Desmoulins PO, Chemin K, Guia S, Cremer H, Ortaldo J, Love P, Kaiserlian D, Vivier E. Combined natural killer cell and dendritic cell functional deficiency in KARAP/DAP12 loss-of-function mutant mice. Immunity 2000; 13:355-64. [PMID: 11021533 DOI: 10.1016/s1074-7613(00)00035-2] [Citation(s) in RCA: 133] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
KARAP/DAP12 is a transmembrane polypeptide with an intracytoplasmic immunoreceptor tyrosine-based activation motif (ITAM). KARAP/DAP12 is associated with several activating cell surface receptors in hematopoietic cells. Here, we report that knockin mice bearing a nonfunctional KARAP/DAP12 ITAM present altered innate immune responses. Although in these mice NK cells are present and their repertoire of inhibitory MHC class I receptors is intact, the NK cell spectrum of natural cytotoxicity toward tumor cell targets is restricted. KARAP/DAP12 loss-of-function mutant mice also exhibit a dramatic accumulation of dendritic cells in muco-cutaneous epithelia, associated with an impaired hapten-specific contact sensitivity. Thus, despite its homology with CD3zeta and FcRgamma, KARAP/DAP12 plays a specific role in innate immunity, emphasizing the nonredundancy of these ITAM-bearing polypeptides in hematopoietic cells.
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MESH Headings
- Adaptor Proteins, Signal Transducing
- Amino Acid Sequence
- Animals
- Antigens, Ly
- Bone Marrow Cells/immunology
- Bone Marrow Cells/metabolism
- Cell Line
- Cell Movement/genetics
- Cell Movement/immunology
- Crosses, Genetic
- Cytotoxicity, Immunologic/genetics
- Dendritic Cells/immunology
- Dendritic Cells/metabolism
- Epithelial Cells/immunology
- Gene Targeting
- Immunophenotyping
- Killer Cells, Natural/immunology
- Killer Cells, Natural/metabolism
- Lectins, C-Type
- Membrane Glycoproteins/biosynthesis
- Membrane Proteins
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Inbred CBA
- Mice, Knockout/immunology
- Mice, Transgenic
- Molecular Sequence Data
- Mucous Membrane/cytology
- Mucous Membrane/immunology
- Receptors, Immunologic/deficiency
- Receptors, Immunologic/genetics
- Receptors, Immunologic/physiology
- Receptors, NK Cell Lectin-Like
- Sequence Deletion
- Signal Transduction/genetics
- Signal Transduction/immunology
- Skin/cytology
- Skin/immunology
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Affiliation(s)
- E Tomasello
- Centre d'Immunologie INSERM/CNRS de Marseille-Luminy, France
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42
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Abstract
The signal-regulatory proteins (SIRP) are Ig-like cell surface receptors detected in hematopoietic and non-hematopoietic cells. SIRP are classified as SIRPalpha molecules, containing a 110- to 113-amino acid long, or SIRPbeta molecules, with a 5-amino acid long intracytoplasmic domain. SIRPalpha molecules belong to inhibitory immunoreceptor tyrosine-based inhibition motif (ITIM)-bearing molecules. The majority of ITIM-bearing receptors are paired with activating isoforms, which share highly related extracytoplasmic domains but harbor a shorter cytoplasmic domain devoid of ITIM and contain a charged amino acid residue in their transmembrane domain. Activating receptors are associated with immunoreceptor tyrosine-based activation motif (ITAM)-bearing proteins, such as KARAP/DAP-12 and FcRgamma. In this report, we show that human SIRPbeta1 is included in an oligomeric complex with KARAP/DAP-12 in hematopoietic and non-hematopoietic transfectant cells as well as in human monocytes. The physical association between SIRPbeta1 and KARAP/DAP-12 results in the functional coupling of SIRPbeta1 engagement to the recruitment of the protein tyrosine kinase Syk and to serotonin release in RBL cell transfectants. Therefore our results show that SIRPbeta1 acts as an activating isoform of SIRPalpha molecules, confirming the co-existence of inhibitory ITIM-bearing molecules, recruiting SHP-1 and SHP-2 protein tyrosine phosphatases, and activating counterparts, whose engagement couples to protein tyrosine kinases via ITAM-bearing molecules.
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Affiliation(s)
- E Tomasello
- Centre d'Immunologie INSERM/CNRS de Marseille-Luminy (CIML), Marseille, France
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43
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Tomasello E, Bléry M, Vély F, Vivier E. Signaling pathways engaged by NK cell receptors: double concerto for activating receptors, inhibitory receptors and NK cells. Semin Immunol 2000; 12:139-47. [PMID: 10764622 DOI: 10.1006/smim.2000.0216] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Despite the absence of antigen-specific receptors at their surface, NK cells can selectively eliminate virus-infected cells, tumor cells and allogenic cells. A dynamic and precisely coordinated balance between activating and inhibitory receptors governs NK cell activation programs. Multiple activating and inhibitory NK cell surface molecules have been described, a group of them acting as receptors for MHC class I molecules. In spite of their heterogeneity, activating NK cell receptors present remarkable structural and functional homologies with T cell- and B cell-antigen receptors. Inhibitory NK cell receptors operate at early stages of activating cascades by recruiting protein tyrosine phosphatases via intra- cytoplasmic motifs (ITIM), a strategy which is widely conserved in hematopoietic and non-hematopoietic cells.
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Affiliation(s)
- E Tomasello
- Centre d'Immunologie INSERM/CNRS de Marseille-Luminy Case 906, Institut Universitaire de France, Campus de Luminy, Marseille cedex 09, 13288, France
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44
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Tomasello E, Cant C, Bühring HJ, Vély F, André P, Seiffert M, Ullrich A, Vivier E. Association of signal-regulatory proteins β with KARAP/DAP-12. Eur J Immunol 2000. [DOI: 10.1002/1521-4141(2000)30:18<2147::aid-immu2147>3.3.co;2-9] [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: 11/06/2022]
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45
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Tomasello E, Olcese L, Vély F, Geourgeon C, Bléry M, Moqrich A, Gautheret D, Djabali M, Mattei MG, Vivier E. Gene structure, expression pattern, and biological activity of mouse killer cell activating receptor-associated protein (KARAP)/DAP-12. J Biol Chem 1998; 273:34115-9. [PMID: 9852069 DOI: 10.1074/jbc.273.51.34115] [Citation(s) in RCA: 115] [Impact Index Per Article: 4.4] [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: 11/06/2022] Open
Abstract
Natural killer cell and T cell subsets express at their cell surface a repertoire of receptors for MHC class I molecules, the natural killer cell receptors (NKRs). NKRs are characterized by the existence of inhibitory and activating isoforms, which are encoded by highly homologous but separate genes present in the same locus. Inhibitory isoforms express an intracytoplasmic immunoreceptor tyrosine-based inhibition motif, whereas activating isoforms lack any immunoreceptor tyrosine-based inhibition motif but harbor a charged amino acid residue in their transmembrane domain. We previously characterized KARAP (killer cell activating receptor-associated protein), a novel disulfide-linked tyrosine-phosphorylated dimer that selectively associates with the activating NKR isoforms. We report here the identification of the mouse KARAP gene, its localization on chromosome 7 and its genomic organization in five exons. Point mutation and transfection studies revealed that KARAP is a novel signaling transmembrane subunit whose transduction function depends on the integrity of an intracytoplasmic immunoreceptor tyrosine-based activation motif. In contrast to previous members of the immunoreceptor tyrosine-based activation motif polypeptide family, KARAP is ubiquitously expressed on hematopoietic and nonhematopoietic cells, suggesting its association with a broad range of activating receptors in a variety of tissues.
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Affiliation(s)
- E Tomasello
- Centre d'Immunologie INSERM/CNRS de Marseille-Luminy, Case 906, 13288 Marseille cedex 09, France
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Poggi A, Tomasello E, Ferrero E, Zocchi MR, Moretta L. p40/LAIR-1 regulates the differentiation of peripheral blood precursors to dendritic cells induced by granulocyte-monocyte colony-stimulating factor. Eur J Immunol 1998; 28:2086-91. [PMID: 9692876 DOI: 10.1002/(sici)1521-4141(199807)28:07<2086::aid-immu2086>3.0.co;2-t] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
p40/LAIR-1, a member of the immunoglobulin superfamily, is a surface molecule broadly distributed among leukocytes which has been shown to down-regulate T and NK cell activation. In this study, we show that p40/LAIR-1 is highly expressed in CD14+ peripheral blood mononuclear cells (PBMC). When cultured in the presence of granulocyte-macrophage colony-stimulating factor (GM-CSF) for 10-14 days, CD14+ cells acquired morphologic and phenotypic features (i.e. loss of CD14 and expression of CD80bright and CD86bright) typical of dendritic cells (DC) and lost the expression of p40/LAIR-1. Engagement of p40/LAIR-1 (but not of CD58) by specific monoclonal antibodies prevented CD14+ PBMC differentiation into DC; when cultured in the presence of GM- CSF upon p40/LAIR-1 cross-linking, the resulting cells were CD14+CD80(dull)CD86(dull) and displayed a macrophage-like morphology. We have recently demonstrated that peripheral blood CD14+ cells co-expressing the CD34 progenitor marker represent the circulating precursors of CD83+ DC. Herein we show that cross-linking of p40/LAIR-1 prevented the maturation of CD14+CD34+ cells into CD83+ DC. This effect appears to be consequent to the impairment of GM-CSF receptor-mediated activation signaling. Indeed, triggering of GM-CSF receptors in both CD14+ and CD14+CD34+ cells led to increases in the intracellular free calcium concentrations which were inhibited by p40/LAIR-1 engagement. Taken together, these data suggest a possible regulating role played by p40/LAIR-1 in the process of differentiation from peripheral blood precursors into DC induced by GM-CSF.
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Affiliation(s)
- A Poggi
- Laboratorio di Immunopatologia, Istituto Nazionale per la Ricerca sul Cancro e Centro di Biotecnologie Avanzate CBA-IST, Genova, Italy
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Abstract
IL-12, in contrast to IL-2, strongly up-regulated the expression of the NKRP1A lectin molecule on human NK cells. This effect appeared to be specific for NKRP1A as the expression of other functional NK cell surface molecules such as CD16 and different killer inhibitory receptors (KIR) including CD158a and CD158b, p70 and p140 were not affected by culture in IL-12. In addition, we found that polyclonal or clonal NK cell populations derived in the presence of IL-2 displayed an increased expression of NKRP1A after culture in IL-12. The IL-12-induced NKRP1A expression was time and dose dependent, reaching a maximum by 7 days of culture in the presence of 2 ng/ml IL-12 and it was inhibited by the addition of anti-IL-12 monoclonal antibody. The IL-12-dependent NKRP1A up-regulation was abrogated by the incubation of NK cells with actinomycin D, thus suggesting that IL-12 induces de novo transcription of NKRP1A mRNA. Functional analysis revealed that the engagement of the NKRP1A molecule in IL-12- but not in IL-2-cultured NK cells leads to a strong inhibition of the cytolytic activity induced by cross-linking of CD16 or p46, a recently described NK cell-specific triggering surface molecule. Our findings suggest that IL-12 up-regulates the expression of NKRP1A which, in turn, can regulate NK cell activation induced via different triggering pathways. This would imply that NKRP1A-mediated functions may be regulatd by the cytokine microenvironment that NK cells may encounter at inflammatory sites.
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Affiliation(s)
- A Poggi
- Istituto Nazionale per la Ricerca sul Cancro (IST), and Centro di Biotecnologie Avanzate, Genova, Italy
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Poggi A, Tomasello E, Revello V, Nanni L, Costa P, Moretta L. p40 molecule regulates NK cell activation mediated by NK receptors for HLA class I antigens and TCR-mediated triggering of T lymphocytes. Int Immunol 1997; 9:1271-9. [PMID: 9310830 DOI: 10.1093/intimm/9.9.1271] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
p40 was previously described as a regulatory molecule capable of inhibiting both the natural and the CD16-mediated cytotoxicity of NK cells. In this study, we analyze the effect of p40 molecule engagement on the NK cell triggering induced by activating HLA class I-specific NK receptors (NKR) or on TCR alpha beta-mediated T cell activation. CD3-CD16+ NK cell clones expressing activating NKR (either CD94 or p50) were analyzed in a redirected killing assay using P815 target cells and appropriate mAb. A strong target cell lysis was detected in the presence of anti-NKR or anti-CD16 mAb alone. Addition of anti-p40 mAb resulted in a strong inhibition of both anti-NKR or anti-CD16 mAb-induced cytolysis. mAb specific for either CD45 or lymphocyte function associated antigen-1 did not exert any inhibitory effect in the same experimental system. Free intracellular calcium ([Ca2+]i) increase induced by mAb cross-linking of activating CD94 or p50 was inhibited by simultaneous engagement of p40 molecules, but not of other NK surface molecules including CD44 and CD56. In addition, cross-linking of p40 molecules strongly inhibited the CD94-induced tumor necrosis factor-alpha and IFN-gamma production. Analysis of TCR alpha beta or gamma delta T cell clones revealed that the engagement of p40 molecules, using specific mAb, induced some degree of inhibition only on anti-V beta (but not anti-V delta or anti-CD3) mAb-induced cytotoxicity. On the other hand, the p40 molecule engagement prevented T cell proliferation induced by either anti-V beta 8 or anti-V delta 2 mAb. A similar inhibitory effect was found on the IL-2-induced NK cell proliferation. Taken together, our present findings suggest that p40 may play a role in the regulation of NK and T lymphocyte activation and proliferation.
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Affiliation(s)
- A Poggi
- Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy
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Poggi A, Tomasello E, Costa P. NKRP1A and p40 molecules are involved in regulation of activation and maturation of human NK cells. Res Immunol 1997; 148:179-84. [PMID: 9255871 DOI: 10.1016/s0923-2494(97)84222-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- A Poggi
- Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
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50
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Poggi A, Costa P, Morelli L, Cantoni C, Pella N, Spada F, Biassoni R, Nanni L, Revello V, Tomasello E, Mingari MC, Moretta A, Moretta L. Expression of human NKRP1A by CD34+ immature thymocytes: NKRP1A-mediated regulation of proliferation and cytolytic activity. Eur J Immunol 1996; 26:1266-72. [PMID: 8647203 DOI: 10.1002/eji.1830260613] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [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: 02/01/2023]
Abstract
In this study, we show that NKRP1A is expressed and functions on a subset of immature human thymocytes. We took advantage of the monoclonal antibody (mAb) 191B8 that was obtained by immunizing mice with cultured human thymocytes characterized by an immature surface phenotype [CD2- CD3- CD4- CD8- stem cell factor receptor (SCFR)+] and expressing cytoplasmic CD3 epsilon chain. The 191B8 antibody homogeneously reacted with the immunizing population but not with most unfractionated thymocytes. It stained a minor population of resting immature thymocytes co-expressing CD34, SCFR, or both. Following culture of the CD34+ or CD34- fractions of CD2- CD3- CD4- CD8- purified immature thymocytes with recombinant interleukin-2 (rIL-2), the 191B8-defined antigen was expressed on virtually all cells even when 191B8+ cells were removed from the starting population. On the other hand, no 191B8+ cells were detected in fresh or cultured thymocytes expressing a more mature phenotype. Biochemical analysis of 191B8 mAb-reactive molecules revealed, under non-reducing conditions, two bands displaying apparent molecular masses of 80 and 44 kDa and a single band of 44 kDa under reducing conditions. Digestion with proteases indicated that the 80-kDa form represented a homodimeric form of two 44-kDa molecules, while deglycosylation with N-glycanase suggested the existence of four N-glycosylation sites. Transfection of COS7 or NIH3T3 cells with hNKRP1A cDNA showed that the 191B8 mAb recognized NKRP1A as shown by both immunofluorescence analysis and immunoprecipitation experiments. Functional studies showed that the 191B8/NKRP1A molecule mediated strong inhibition of the cytolytic activity of cultured CD2- CD3- immature thymocytes against a panel of tumor target cells. More importantly, 191B8 mAb induced proliferation of CD2- CD3- fresh thymocytes which was not increased by rIL-2. Thus, we propose that NKRP1A molecules, which are expressed in highly immature thymocytes, may play a regulatory role in their growth and function.
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Affiliation(s)
- A Poggi
- Istituto Nazionale per la Ricerca sul Cancro e Centro Biotecnologie Avanzate, Genova, Italy
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