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Garcia-Seyda N, Song S, Seveau de Noray V, David-Broglio L, Matti C, Artinger M, Dupuy F, Biarnes-Pelicot M, Valignat MP, Legler DF, Bajénoff M, Theodoly O. Naive T lymphocytes chemotax long distance to CCL21 but not to a source of bioactive S1P. iScience 2023; 26:107695. [PMID: 37822497 PMCID: PMC10562802 DOI: 10.1016/j.isci.2023.107695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/12/2023] [Accepted: 08/16/2023] [Indexed: 10/13/2023] Open
Abstract
Naive T lymphocytes traffic through the organism in search for antigen, alternating between blood and secondary lymphoid organs. Lymphocyte homing to lymph nodes relies on CCL21 chemokine sensing by CCR7 receptors, while exit into efferent lymphatics relies on sphingolipid S1P sensing by S1PR1 receptors. While both molecules are claimed chemotactic, a quantitative analysis of naive T lymphocyte migration along defined gradients is missing. Here, we used a reductionist approach to study the real-time single-cell response of naive T lymphocytes to CCL21 and serum rich in bioactive S1P. Using microfluidic and micropatterning ad hoc tools, we show that CCL21 triggers stable polarization and long-range chemotaxis of cells, whereas S1P-rich serum triggers a transient polarization only and no significant displacement, potentially representing a brief transmigration step through exit portals. Our in vitro data thus suggest that naive T lymphocyte chemotax long distances to CCL21 but not toward a source of bioactive S1P.
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Affiliation(s)
- Nicolas Garcia-Seyda
- Aix Marseille University, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
- Aix Marseille University, Inserm, CNRS, CIML, Marseille, France
| | - Solene Song
- Aix Marseille University, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
- Aix Marseille University, Inserm, CNRS, CIML, Marseille, France
| | | | - Luc David-Broglio
- Aix Marseille University, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
| | - Christoph Matti
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, Unterseestrasse 47, 8280 Kreuzlingen, Switzerland
| | - Marc Artinger
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, Unterseestrasse 47, 8280 Kreuzlingen, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, 3012 Bern, Switzerland
| | - Florian Dupuy
- Aix Marseille University, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
| | - Martine Biarnes-Pelicot
- Aix Marseille University, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
| | - Marie-Pierre Valignat
- Aix Marseille University, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
| | - Daniel F. Legler
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, Unterseestrasse 47, 8280 Kreuzlingen, Switzerland
- Faculty of Biology, University of Konstanz, Universitätsstraße 10, 78464 Konstanz, Germany
- Theodor Kocher Institute, University of Bern, Freiestrasse 1, 3012 Bern, Switzerland
| | - Marc Bajénoff
- Aix Marseille University, Inserm, CNRS, CIML, Marseille, France
| | - Olivier Theodoly
- Aix Marseille University, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
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2
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Ugur M, Labios RJ, Fenton C, Knöpper K, Jobin K, Imdahl F, Golda G, Hoh K, Grafen A, Kaisho T, Saliba AE, Grün D, Gasteiger G, Bajénoff M, Kastenmüller W. Lymph node medulla regulates the spatiotemporal unfolding of resident dendritic cell networks. Immunity 2023; 56:1778-1793.e10. [PMID: 37463581 PMCID: PMC10433941 DOI: 10.1016/j.immuni.2023.06.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 04/02/2023] [Accepted: 06/21/2023] [Indexed: 07/20/2023]
Abstract
Unlike macrophage networks composed of long-lived tissue-resident cells within specific niches, conventional dendritic cells (cDCs) that generate a 3D network in lymph nodes (LNs) are short lived and continuously replaced by DC precursors (preDCs) from the bone marrow (BM). Here, we examined whether specific anatomical niches exist within which preDCs differentiate toward immature cDCs. In situ photoconversion and Prtn3-based fate-tracking revealed that the LN medullary cords are preferential entry sites for preDCs, serving as specific differentiation niches. Repopulation and fate-tracking approaches demonstrated that the cDC1 network unfolded from the medulla along the vascular tree toward the paracortex. During inflammation, collective maturation and migration of resident cDC1s to the paracortex created discontinuity in the medullary cDC1 network and temporarily impaired responsiveness. The decrease in local cDC1 density resulted in higher Flt3L availability in the medullary niche, which accelerated cDC1 development to restore the network. Thus, the spatiotemporal development of the cDC1 network is locally regulated in dedicated LN niches via sensing of cDC1 densities.
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Affiliation(s)
- Milas Ugur
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany.
| | - R Jacob Labios
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany
| | - Chloe Fenton
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany
| | - Konrad Knöpper
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany
| | - Katarzyna Jobin
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany
| | - Fabian Imdahl
- Helmholtz Institute for RNA-Based Infection Research (HIRI), Helmholtz Centre for Infection Research (HZI), 97080 Würzburg, Germany
| | - Gosia Golda
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany
| | - Kathrin Hoh
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany
| | - Anika Grafen
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany
| | - Tsuneyasu Kaisho
- Department of Immunology Institute of Advanced Medicine, Wakayama Medical University, 641-8509 Wakayama, Japan
| | - Antoine-Emmanuel Saliba
- Helmholtz Institute for RNA-Based Infection Research (HIRI), Helmholtz Centre for Infection Research (HZI), 97080 Würzburg, Germany
| | - Dominic Grün
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany; Helmholtz Institute for RNA-Based Infection Research (HIRI), Helmholtz Centre for Infection Research (HZI), 97080 Würzburg, Germany
| | - Georg Gasteiger
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany
| | - Marc Bajénoff
- Aix Marseille Université, CNRS, INSERM, CIML, 13288 Marseille, France
| | - Wolfgang Kastenmüller
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the, Julius-Maximilians-Universität Würzburg, 97078, Würzburg, Germany.
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3
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Kaltenbach L, Martzloff P, Bambach SK, Aizarani N, Mihlan M, Gavrilov A, Glaser KM, Stecher M, Thünauer R, Thiriot A, Heger K, Kierdorf K, Wienert S, von Andrian UH, Schmidt-Supprian M, Nerlov C, Klauschen F, Roers A, Bajénoff M, Grün D, Lämmermann T. Slow integrin-dependent migration organizes networks of tissue-resident mast cells. Nat Immunol 2023; 24:915-924. [PMID: 37081147 PMCID: PMC10232366 DOI: 10.1038/s41590-023-01493-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [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: 08/05/2022] [Accepted: 03/15/2023] [Indexed: 04/22/2023]
Abstract
Immune cell locomotion is associated with amoeboid migration, a flexible mode of movement, which depends on rapid cycles of actin polymerization and actomyosin contraction1. Many immune cells do not necessarily require integrins, the major family of adhesion receptors in mammals, to move productively through three-dimensional tissue spaces2,3. Instead, they can use alternative strategies to transmit their actin-driven forces to the substrate, explaining their migratory adaptation to changing external environments4-6. However, whether these generalized concepts apply to all immune cells is unclear. Here, we show that the movement of mast cells (immune cells with important roles during allergy and anaphylaxis) differs fundamentally from the widely applied paradigm of interstitial immune cell migration. We identify a crucial role for integrin-dependent adhesion in controlling mast cell movement and localization to anatomical niches rich in KIT ligand, the major mast cell growth and survival factor. Our findings show that substrate-dependent haptokinesis is an important mechanism for the tissue organization of resident immune cells.
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Affiliation(s)
- Lukas Kaltenbach
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- International Max Planck Research School for Immunobiology, Epigenetics and Metabolism (IMPRS-IEM), Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Paloma Martzloff
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- International Max Planck Research School for Immunobiology, Epigenetics and Metabolism (IMPRS-IEM), Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Sarah K Bambach
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- International Max Planck Research School for Immunobiology, Epigenetics and Metabolism (IMPRS-IEM), Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Nadim Aizarani
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- Friedrich Miescher Institute for Biomedical Research (FMI), Basel, Switzerland
| | - Michael Mihlan
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Alina Gavrilov
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Katharina M Glaser
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- International Max Planck Research School for Immunobiology, Epigenetics and Metabolism (IMPRS-IEM), Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Manuel Stecher
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
- International Max Planck Research School for Immunobiology, Epigenetics and Metabolism (IMPRS-IEM), Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Roland Thünauer
- Advanced Light and Fluorescence Microscopy Facility, Centre for Structural Systems Biology (CSSB) and University of Hamburg, Hamburg, Germany
- Leibniz Institute of Virology (LIV), Hamburg, Germany
| | - Aude Thiriot
- Department of Immunology and HMS Center for Immune Imaging, Harvard Medical School, Boston, MA, USA
- The Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Klaus Heger
- Department of Cancer Immunology, Genentech, South San Francisco, CA, USA
| | - Katrin Kierdorf
- Institute of Neuropathology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- CIBSS-Center for Integrative Biological Signaling Studies, University of Freiburg, Freiburg, Germany
- Center for Basics in NeuroModulation (NeuroModulBasics), Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Stephan Wienert
- Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Pathology, Berlin, Germany
| | - Ulrich H von Andrian
- Department of Immunology and HMS Center for Immune Imaging, Harvard Medical School, Boston, MA, USA
- The Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Marc Schmidt-Supprian
- Institute of Experimental Hematology, Center for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich, Germany
| | - Claus Nerlov
- MRC Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, UK
| | - Frederick Klauschen
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
- Berlin Institute for the Foundation of Learning and Data (BIFOLD) and Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Axel Roers
- Institute for Immunology, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Marc Bajénoff
- Aix Marseille University, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Dominic Grün
- Würzburg Institute of Systems Immunology, Max Planck Research Group at the Julius-Maximilians-Universität Würzburg, Würzburg, Germany
- Helmholtz Institute for RNA-Based Infection Research (HIRI), Helmholtz Centre for infection Research (HZI), Würzburg, Germany
| | - Tim Lämmermann
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.
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4
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Abstract
Mast cells (MCs) are evolutionarily ancient innate immune cells with important roles in protective immunity against bacteria, parasites, and venomous animals. They can be found in most organs of the body, where they also contribute to normal tissue functioning, for example by engaging in crosstalk with nerves. Despite this, they are most widely known for their detrimental roles in allergy, anaphylaxis, and atopic disease. Just like macrophages, mast cells were conventionally thought to originate from the bone marrow. However, they are already present in fetal tissues before the onset of bone marrow hematopoiesis, questioning this dogma. In recent years, our view of myeloid cell ontogeny has been revised. We now know that the first mast cells originate from progenitors made in the extra-embryonic yolk sac, and later get supplemented with mast cells produced from subsequent waves of hematopoiesis. In most connective tissues, sizeable populations of fetal-derived mast cells persist into adulthood, where they self-maintain largely independently from the bone marrow. These developmental origins are highly reminiscent of macrophages, which are known to have critical functions in development. Mast cells too may thus support healthy development. Their fetal origins and longevity also make mast cells susceptible to genetic and environmental perturbations, which may render them pathological. Here, we review our current understanding of mast cell biology from a developmental perspective. We first summarize how mast cell populations are established from distinct hematopoietic progenitor waves, and how they are subsequently maintained throughout life. We then discuss what functions mast cells may normally have at early life stages, and how they may be co-opted to cause, worsen, or increase susceptibility to disease.
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Affiliation(s)
- Shin Li Chia
- Institute for Regeneration and Repair, Centre for Inflammation Research & Centre for Reproductive HealthThe University of EdinburghEdinburghUK
| | - Simran Kapoor
- Institute for Regeneration and Repair, Centre for Inflammation Research & Centre for Reproductive HealthThe University of EdinburghEdinburghUK
| | - Cyril Carvalho
- Institute for Regeneration and Repair, Centre for Inflammation Research & Centre for Reproductive HealthThe University of EdinburghEdinburghUK
| | - Marc Bajénoff
- Centre d'Immunologie de Marseille‐Luminy (CIML)MarseilleFrance
| | - Rebecca Gentek
- Institute for Regeneration and Repair, Centre for Inflammation Research & Centre for Reproductive HealthThe University of EdinburghEdinburghUK
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5
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Menzel L, Zschummel M, Crowley T, Franke V, Grau M, Ulbricht C, Hauser A, Siffrin V, Bajénoff M, Acton SE, Akalin A, Lenz G, Willimsky G, Höpken UE, Rehm A. Lymphocyte access to lymphoma is impaired by high endothelial venule regression. Cell Rep 2021; 37:109878. [PMID: 34706240 PMCID: PMC8567313 DOI: 10.1016/j.celrep.2021.109878] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/27/2021] [Accepted: 10/01/2021] [Indexed: 12/15/2022] Open
Abstract
Blood endothelial cells display remarkable plasticity depending on the demands of a malignant microenvironment. While studies in solid tumors focus on their role in metabolic adaptations, formation of high endothelial venules (HEVs) in lymph nodes extends their role to the organization of immune cell interactions. As a response to lymphoma growth, blood vessel density increases; however, the fate of HEVs remains elusive. Here, we report that lymphoma causes severe HEV regression in mouse models that phenocopies aggressive human B cell lymphomas. HEV dedifferentiation occurrs as a consequence of a disrupted lymph-carrying conduit system. Mechanosensitive fibroblastic reticular cells then deregulate CCL21 migration paths, followed by deterioration of dendritic cell proximity to HEVs. Loss of this crosstalk deprives HEVs of lymphotoxin-β-receptor (LTβR) signaling, which is indispensable for their differentiation and lymphocyte transmigration. Collectively, this study reveals a remodeling cascade of the lymph node microenvironment that is detrimental for immune cell trafficking in lymphoma.
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Affiliation(s)
- Lutz Menzel
- Translational Tumorimmunology, Max-Delbrück-Center for Molecular Medicine Berlin, Germany, 13125 Berlin, Germany
| | - Maria Zschummel
- Microenvironmental Regulation in Autoimmunity and Cancer, Max-Delbrück-Center for Molecular Medicine Berlin, 13125 Berlin, Germany
| | - Tadhg Crowley
- Neuroimmunology Laboratory, Max-Delbrück-Center for Molecular Medicine Berlin, Germany, 13125 Berlin, Germany
| | - Vedran Franke
- Bioinformatics & Omics Data Science Platform, BIMSB at Max-Delbrück-Center for Molecular Medicine Berlin, 13125 Berlin, Germany
| | - Michael Grau
- Medical Department A for Hematology, Oncology, and Pneumology, University Hospital Münster, 48149 Münster, Germany
| | - Carolin Ulbricht
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Rheumatology and Clinical Immunology, and Immune Dynamics, Deutsches Rheumaforschungszentrum Berlin, 10117 Berlin, Germany
| | - Anja Hauser
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Rheumatology and Clinical Immunology, and Immune Dynamics, Deutsches Rheumaforschungszentrum Berlin, 10117 Berlin, Germany
| | - Volker Siffrin
- Neuroimmunology Laboratory, Max-Delbrück-Center for Molecular Medicine Berlin, Germany, 13125 Berlin, Germany; Neuroimmunology Laboratory, Experimental and Clinical Research Center, Charité-Universitätsmedizin Berlin, 13125 Berlin, Germany
| | - Marc Bajénoff
- Aix Marseille University, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy, 13288 Marseille, France
| | - Sophie E Acton
- Stromal Immunology Group, MRC Laboratory for Molecular Cell Biology, University College London, WC1E 6BT London, UK
| | - Altuna Akalin
- Bioinformatics & Omics Data Science Platform, BIMSB at Max-Delbrück-Center for Molecular Medicine Berlin, 13125 Berlin, Germany
| | - Georg Lenz
- Medical Department A for Hematology, Oncology, and Pneumology, University Hospital Münster, 48149 Münster, Germany
| | - Gerald Willimsky
- Institute of Immunology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 13125 Berlin, Germany; German Cancer Research Center, 69120 Heidelberg, Germany; German Cancer Consortium, partner site Berlin, Germany
| | - Uta E Höpken
- Microenvironmental Regulation in Autoimmunity and Cancer, Max-Delbrück-Center for Molecular Medicine Berlin, 13125 Berlin, Germany
| | - Armin Rehm
- Translational Tumorimmunology, Max-Delbrück-Center for Molecular Medicine Berlin, Germany, 13125 Berlin, Germany.
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6
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Bellomo A, Gentek R, Golub R, Bajénoff M. Macrophage-fibroblast circuits in the spleen. Immunol Rev 2021; 302:104-125. [PMID: 34028841 DOI: 10.1111/imr.12979] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/30/2021] [Accepted: 04/30/2021] [Indexed: 12/22/2022]
Abstract
Macrophages are an integral part of all organs in the body, where they contribute to immune surveillance, protection, and tissue-specific homeostatic functions. This is facilitated by so-called niches composed of macrophages and their surrounding stroma. These niches structurally anchor macrophages and provide them with survival factors and tissue-specific signals that imprint their functional identity. In turn, macrophages ensure appropriate functioning of the niches they reside in. Macrophages thus form reciprocal, mutually beneficial circuits with their cellular niches. In this review, we explore how this concept applies to the spleen, a large secondary lymphoid organ whose primary functions are to filter the blood and regulate immunity. We first outline the splenic micro-anatomy, the different populations of splenic fibroblasts and macrophages and their respective contribution to protection of and key physiological processes occurring in the spleen. We then discuss firmly established and potential cellular circuits formed by splenic macrophages and fibroblasts, with an emphasis on the molecular cues underlying their crosstalk and their relevance to splenic functionality. Lastly, we conclude by considering how these macrophage-fibroblast circuits might be impaired by aging, and how understanding these changes might help identify novel therapeutic avenues with the potential of restoring splenic functions in the elderly.
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Affiliation(s)
- Alicia Bellomo
- CIRI, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, École Normale Supérieure de Lyon, Univ Lyon, Lyon, France
| | - Rebecca Gentek
- Centre for Inflammation Research & Centre for Reproductive Health, The Queen's Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Rachel Golub
- Inserm U1223, Institut Pasteur, Paris, France.,Lymphopoiesis Unit, Institut Pasteur, Paris, France
| | - Marc Bajénoff
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
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7
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Bijnen M, Bajénoff M. Gland Macrophages: Reciprocal Control and Function within Their Niche. Trends Immunol 2021; 42:120-136. [PMID: 33423933 DOI: 10.1016/j.it.2020.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 11/30/2022]
Abstract
The human body contains dozens of endocrine and exocrine glands, which regulate physiological processes by secreting hormones and other factors. Glands can be subdivided into contiguous tissue modules, each consisting of an interdependent network of cells that together perform particular tissue functions. Among those cells are macrophages, a diverse type of immune cells endowed with trophic functions. In this review, we discuss recent findings on how resident macrophages support tissue modules within glands via the creation of mutually beneficial cell-cell circuits. A better comprehension of gland macrophage function and local control within their niche is essential to achieve a refined understanding of gland physiology in homeostasis and disease.
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Affiliation(s)
- Mitchell Bijnen
- Aix Marseille University, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy, Marseille, France.
| | - Marc Bajénoff
- Aix Marseille University, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy, Marseille, France
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8
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Garcia-Seyda N, Seveau V, Manca F, Biarnes-Pelicot M, Valignat MP, Bajénoff M, Theodoly O. Human neutrophils swim and phagocytise bacteria. Biol Cell 2020; 113:28-38. [PMID: 33616999 DOI: 10.1111/boc.202000084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/30/2020] [Accepted: 10/03/2020] [Indexed: 01/07/2023]
Abstract
BACKGROUND INFORMATION Leukocytes migrate in an amoeboid fashion while patrolling our organism in the search for infection or tissue damage. Their capacity to migrate has been proven integrin independent, however, non-specific adhesion or confinement remain a requisite in current models of cell migration. This idea has been challenged twice within the last decade with human neutrophils and effector T lymphocytes, which were shown to migrate in free suspension, a phenomenon termed swimming. While the relevance of leukocyte swimming in vivo remains under judgment, a growing amount of clinical evidence demonstrates that leukocytes are indeed found in liquid-filled body cavities, occasionally with phagocyted pathogens, such as in the amniotic fluid, the cerebrospinal fluid (CSF), or the eye vitreous and aqueous humor. RESULTS We studied in vitro swimming of primary human neutrophils in the presence of live bacteria, in 2 and 3 dimensions. We show that swimming neutrophils perform phagocytosis of bacteria in suspension. By micropatterning live bacteria on a substrate with an optical technique, we further prove that they use chemotaxis to swim towards their targets. Moreover, we provide evidence that neutrophil navigation can alternate between adherent and non-adherent modes. CONCLUSIONS Our results suggest that human neutrophils do not rely on adhesion to carry out their functions, supporting a versatile phagocytic function adaptable to the various environmental conditions encountered in vivo, as already suggested by clinical data. SIGNIFICANCE We verified a claim stated 10 years ago and never reproduced, on the capacity of human neutrophils to swim and perform swimming chemotaxis. We further extended those results to prove that swimming neutrophils can phagocytise bacteria, disregarding adhesion nor confinement as a requisite for accomplishing their function, which differs with current paradigms of leukocyte migration.
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Affiliation(s)
- Nicolas Garcia-Seyda
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France.,Aix Marseille Univ, Inserm, CNRS, CIML, Marseille, France
| | - Valentine Seveau
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
| | - Fabio Manca
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
| | | | - Marie-Pierre Valignat
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
| | - Marc Bajénoff
- Aix Marseille Univ, Inserm, CNRS, CIML, Marseille, France
| | - Olivier Theodoly
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France
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9
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Krivanek J, Soldatov RA, Kastriti ME, Chontorotzea T, Herdina AN, Petersen J, Szarowska B, Landova M, Matejova VK, Holla LI, Kuchler U, Zdrilic IV, Vijaykumar A, Balic A, Marangoni P, Klein OD, Neves VCM, Yianni V, Sharpe PT, Harkany T, Metscher BD, Bajénoff M, Mina M, Fried K, Kharchenko PV, Adameyko I. Dental cell type atlas reveals stem and differentiated cell types in mouse and human teeth. Nat Commun 2020; 11:4816. [PMID: 32968047 PMCID: PMC7511944 DOI: 10.1038/s41467-020-18512-7] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 08/24/2020] [Indexed: 01/09/2023] Open
Abstract
Understanding cell types and mechanisms of dental growth is essential for reconstruction and engineering of teeth. Therefore, we investigated cellular composition of growing and non-growing mouse and human teeth. As a result, we report an unappreciated cellular complexity of the continuously-growing mouse incisor, which suggests a coherent model of cell dynamics enabling unarrested growth. This model relies on spatially-restricted stem, progenitor and differentiated populations in the epithelial and mesenchymal compartments underlying the coordinated expansion of two major branches of pulpal cells and diverse epithelial subtypes. Further comparisons of human and mouse teeth yield both parallelisms and differences in tissue heterogeneity and highlight the specifics behind growing and non-growing modes. Despite being similar at a coarse level, mouse and human teeth reveal molecular differences and species-specific cell subtypes suggesting possible evolutionary divergence. Overall, here we provide an atlas of human and mouse teeth with a focus on growth and differentiation.
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Affiliation(s)
- Jan Krivanek
- Department of Molecular Neuroscience, Center for Brain Research, Medical University of Vienna, Vienna, Austria
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Ruslan A Soldatov
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA
| | - Maria Eleni Kastriti
- Department of Molecular Neuroscience, Center for Brain Research, Medical University of Vienna, Vienna, Austria
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Tatiana Chontorotzea
- Department of Molecular Neuroscience, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Anna Nele Herdina
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Julian Petersen
- Department of Molecular Neuroscience, Center for Brain Research, Medical University of Vienna, Vienna, Austria
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Bara Szarowska
- Department of Molecular Neuroscience, Center for Brain Research, Medical University of Vienna, Vienna, Austria
| | - Marie Landova
- Institute of Animal Physiology and Genetics, CAS, Brno, Czech Republic
| | - Veronika Kovar Matejova
- Clinic of Stomatology, Institution Shared with St. Anne's Faculty Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Lydie Izakovicova Holla
- Clinic of Stomatology, Institution Shared with St. Anne's Faculty Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Ulrike Kuchler
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria
- Department of Oral Surgery, Medical University of Vienna, Vienna, Austria
| | - Ivana Vidovic Zdrilic
- Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Anushree Vijaykumar
- Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Anamaria Balic
- Research Program in Developmental Biology, Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Pauline Marangoni
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, USA
| | - Ophir D Klein
- Program in Craniofacial Biology and Department of Orofacial Sciences, University of California, San Francisco, CA, USA
- Department of Pediatrics and Institute for Human Genetics, University of California, San Francisco, CA, USA
| | - Vitor C M Neves
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral & Craniofacial Sciences. King's College London, London, UK
| | - Val Yianni
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral & Craniofacial Sciences. King's College London, London, UK
| | - Paul T Sharpe
- Centre for Craniofacial and Regenerative Biology, Faculty of Dentistry, Oral & Craniofacial Sciences. King's College London, London, UK
| | - Tibor Harkany
- Department of Molecular Neuroscience, Center for Brain Research, Medical University of Vienna, Vienna, Austria
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Brian D Metscher
- Department of Evolutionary Biology, University of Vienna, Vienna, Austria
| | - Marc Bajénoff
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | - Mina Mina
- Department of Craniofacial Sciences, School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Kaj Fried
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Peter V Kharchenko
- Department of Biomedical Informatics, Harvard Medical School, Boston, MA, USA.
| | - Igor Adameyko
- Department of Molecular Neuroscience, Center for Brain Research, Medical University of Vienna, Vienna, Austria.
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
- Department of Neuroimmunology, Center for Brain Research, Medical University of Vienna, Vienna, Austria.
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10
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Bellomo A, Mondor I, Spinelli L, Lagueyrie M, Stewart BJ, Brouilly N, Malissen B, Clatworthy MR, Bajénoff M. Reticular Fibroblasts Expressing the Transcription Factor WT1 Define a Stromal Niche that Maintains and Replenishes Splenic Red Pulp Macrophages. Immunity 2020; 53:127-142.e7. [PMID: 32562599 DOI: 10.1016/j.immuni.2020.06.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [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: 10/18/2019] [Revised: 03/20/2020] [Accepted: 06/04/2020] [Indexed: 12/21/2022]
Abstract
Located within red pulp cords, splenic red pulp macrophages (RPMs) are constantly exposed to the blood flow, clearing senescent red blood cells (RBCs) and recycling iron from hemoglobin. Here, we studied the mechanisms underlying RPM homeostasis, focusing on the involvement of stromal cells as these cells perform anchoring and nurturing macrophage niche functions in lymph nodes and liver. Microscopy revealed that RPMs are embedded in a reticular meshwork of red pulp fibroblasts characterized by the expression of the transcription factor Wilms' Tumor 1 (WT1) and colony stimulating factor 1 (CSF1). Conditional deletion of Csf1 in WT1+ red pulp fibroblasts, but not white pulp fibroblasts, drastically altered the RPM network without altering circulating CSF1 levels. Upon RPM depletion, red pulp fibroblasts transiently produced the monocyte chemoattractants CCL2 and CCL7, thereby contributing to the replenishment of the RPM network. Thus, red pulp fibroblasts anchor and nurture RPM, a function likely conserved in humans.
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Affiliation(s)
- Alicia Bellomo
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | | | | | | | - Benjamin J Stewart
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, UK; Cambridge University Hospitals NHS Foundation Trust and NIHR Cambridge Biomedical Research Centre, Cambridge, UK; Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Nicolas Brouilly
- Aix-Marseille Université, Centre National de la Recherche Scientifique, Institut de Biologie du Développement de Marseille, Marseille, France
| | | | - Menna R Clatworthy
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, UK; Cambridge University Hospitals NHS Foundation Trust and NIHR Cambridge Biomedical Research Centre, Cambridge, UK; Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Marc Bajénoff
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France.
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11
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Bain CC, Gibson DA, Steers NJ, Boufea K, Louwe PA, Doherty C, González-Huici V, Gentek R, Magalhaes-Pinto M, Shaw T, Bajénoff M, Bénézech C, Walmsley SR, Dockrell DH, Saunders PTK, Batada NN, Jenkins SJ. Rate of replenishment and microenvironment contribute to the sexually dimorphic phenotype and function of peritoneal macrophages. Sci Immunol 2020; 5:eabc4466. [PMID: 32561560 PMCID: PMC7610697 DOI: 10.1126/sciimmunol.abc4466] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [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: 04/24/2020] [Accepted: 05/27/2020] [Indexed: 12/12/2022]
Abstract
Macrophages reside in the body cavities where they maintain serosal homeostasis and provide immune surveillance. Peritoneal macrophages are implicated in the etiology of pathologies including peritonitis, endometriosis, and metastatic cancer; thus, understanding the factors that govern their behavior is vital. Using a combination of fate mapping techniques, we have investigated the impact of sex and age on murine peritoneal macrophage differentiation, turnover, and function. We demonstrate that the sexually dimorphic replenishment of peritoneal macrophages from the bone marrow, which is high in males and very low in females, is driven by changes in the local microenvironment that arise upon sexual maturation. Population and single-cell RNA sequencing revealed marked dimorphisms in gene expression between male and female peritoneal macrophages that was, in part, explained by differences in composition of these populations. By estimating the time of residency of different subsets within the cavity and assessing development of dimorphisms with age and in monocytopenic Ccr2 -/- mice, we demonstrate that key sex-dependent features of peritoneal macrophages are a function of the differential rate of replenishment from the bone marrow, whereas others are reliant on local microenvironment signals. We demonstrate that the dimorphic turnover of peritoneal macrophages contributes to differences in the ability to protect against pneumococcal peritonitis between the sexes. These data highlight the importance of considering both sex and age in susceptibility to inflammatory and infectious diseases.
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Affiliation(s)
- C C Bain
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK.
| | - D A Gibson
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - N J Steers
- Columbia University Irving Medical Center, Columbia University, New York, NY 10032, USA
| | - K Boufea
- Institute for Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - P A Louwe
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - C Doherty
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - V González-Huici
- Institute for Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - R Gentek
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université UM2, INSERM, U1104, CNRS UMR7280, 13288 Marseille, France
| | - M Magalhaes-Pinto
- Lydia Becker Institute for Immunology and Infection, Faculty of Biology, Medicine and Health, Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK
| | - T Shaw
- Lydia Becker Institute for Immunology and Infection, Faculty of Biology, Medicine and Health, Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK
- Manchester Collaborative Centre for Inflammation Research (MCCIR), University of Manchester, Manchester, UK
| | - M Bajénoff
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université UM2, INSERM, U1104, CNRS UMR7280, 13288 Marseille, France
| | - C Bénézech
- Centre for Cardiovascular Sciences, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - S R Walmsley
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - D H Dockrell
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - P T K Saunders
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK
| | - N N Batada
- Institute for Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - S J Jenkins
- University of Edinburgh Centre for Inflammation Research, Queens Medical Research Institute, Edinburgh EH16 4TJ, UK.
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12
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Garcia-Seyda N, Aoun L, Tishkova V, Seveau V, Biarnes-Pelicot M, Bajénoff M, Valignat MP, Theodoly O. Microfluidic device to study flow-free chemotaxis of swimming cells. Lab Chip 2020; 20:1639-1647. [PMID: 32249280 DOI: 10.1039/d0lc00045k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Microfluidic devices have been used in the last two decades to study in vitro cell chemotaxis, but few existing devices generate gradients in flow-free conditions. Flow can bias cell directionality of adherent cells and precludes the study of swimming cells like naïve T lymphocytes, which only migrate in a non-adherent fashion. We developed two devices that create stable, flow-free, diffusion-based gradients and are adapted for adherent and swimming cells. The flow-free environment is achieved by using agarose gel barriers between a central channel with cells and side channels with chemoattractants. These barriers insulate cells from injection/rinsing cycles of chemoattractants, they dampen residual drift across the device, and they allow co-culture of cells without physical interaction, to study contactless paracrine communication. Our devices were used here to investigate neutrophil and naïve T lymphocyte chemotaxis.
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Affiliation(s)
- Nicolas Garcia-Seyda
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France.
| | - Laurene Aoun
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France.
| | | | - Valentine Seveau
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France.
| | | | - Marc Bajénoff
- Aix Marseille Univ, Inserm, CNRS, CIML, Marseille, France
| | - Marie-Pierre Valignat
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France.
| | - Olivier Theodoly
- Aix Marseille Univ, Inserm, CNRS, Turing Center for Living Systems, LAI, Marseille, France.
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13
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Mondor I, Baratin M, Lagueyrie M, Saro L, Henri S, Gentek R, Suerinck D, Kastenmuller W, Jiang JX, Bajénoff M. Lymphatic Endothelial Cells Are Essential Components of the Subcapsular Sinus Macrophage Niche. Immunity 2019; 50:1453-1466.e4. [PMID: 31053503 DOI: 10.1016/j.immuni.2019.04.002] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 02/10/2019] [Accepted: 04/10/2019] [Indexed: 12/24/2022]
Abstract
In lymph nodes, subcapsular sinus macrophages (SSMs) form an immunological barrier that monitors lymph drained from peripheral tissues. Upon infection, SSMs activate B and natural killer T (NKT) cells while secreting inflammatory mediators. Here, we investigated the mechanisms regulating development and homeostasis of SSMs. Embryonic SSMs originated from yolk sac hematopoiesis and were replaced by a postnatal wave of bone marrow (BM)-derived monocytes that proliferated to establish the adult SSM network. The SSM network self-maintained by proliferation with minimal BM contribution. Upon pathogen-induced transient deletion, BM-derived cells contributed to restoring the SSM network. Lymphatic endothelial cells (LECs) were the main source of CSF-1 within the lymph node and conditional deletion of Csf1 in adult LECs decreased the network of SSMs and medullary sinus macrophages (MSMs). Thus, SSMs have a dual hematopoietic origin, and LECs are essential to the niche supporting these macrophages.
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Affiliation(s)
| | - Myriam Baratin
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | | | - Lisa Saro
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Sandrine Henri
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Rebecca Gentek
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | | | | | - Jean X Jiang
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, TX 78229, USA
| | - Marc Bajénoff
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France.
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14
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Cabeza-Cabrerizo M, van Blijswijk J, Wienert S, Heim D, Jenkins RP, Chakravarty P, Rogers N, Frederico B, Acton S, Beerling E, van Rheenen J, Clevers H, Schraml BU, Bajénoff M, Gerner M, Germain RN, Sahai E, Klauschen F, Reis e Sousa C. Tissue clonality of dendritic cell subsets and emergency DCpoiesis revealed by multicolor fate mapping of DC progenitors. Sci Immunol 2019; 4:eaaw1941. [PMID: 30824528 PMCID: PMC6420147 DOI: 10.1126/sciimmunol.aaw1941] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [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: 11/27/2018] [Accepted: 01/28/2019] [Indexed: 12/13/2022]
Abstract
Conventional dendritic cells (cDCs) are found in all tissues and play a key role in immune surveillance. They comprise two major subsets, cDC1 and cDC2, both derived from circulating precursors of cDCs (pre-cDCs), which exited the bone marrow. We show that, in the steady-state mouse, pre-cDCs entering tissues proliferate to give rise to differentiated cDCs, which themselves have residual proliferative capacity. We use multicolor fate mapping of cDC progenitors to show that this results in clones of sister cDCs, most of which comprise a single cDC1 or cDC2 subtype, suggestive of pre-cDC commitment. Upon infection, a surge in the influx of pre-cDCs into the affected tissue dilutes clones and increases cDC numbers. Our results indicate that tissue cDCs can be organized in a patchwork of closely positioned sister cells of the same subset whose coexistence is perturbed by local infection, when the bone marrow provides additional pre-cDCs to meet increased tissue demand.
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Affiliation(s)
- Mar Cabeza-Cabrerizo
- Immunobiology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK.
| | - Janneke van Blijswijk
- Immunobiology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK.
| | - Stephan Wienert
- Institute of Pathology, Charité University Medicine Berlin, Charitéplatz 1, D-10117 Berlin, Germany
| | - Daniel Heim
- Institute of Pathology, Charité University Medicine Berlin, Charitéplatz 1, D-10117 Berlin, Germany
| | - Robert P Jenkins
- Tumour Cell Biology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Probir Chakravarty
- Bioinformatics, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Neil Rogers
- Immunobiology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Bruno Frederico
- Immunobiology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Sophie Acton
- Immunobiology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | | | | | - Hans Clevers
- Hubrecht Institute, Uppsalalaan 8, 3584 CT Utrecht, Netherlands
| | - Barbara U Schraml
- Immunobiology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Marc Bajénoff
- Aix-Marseille University Centre, National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM), Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Michael Gerner
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ronald N Germain
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Erik Sahai
- Tumour Cell Biology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK
| | - Frederick Klauschen
- Institute of Pathology, Charité University Medicine Berlin, Charitéplatz 1, D-10117 Berlin, Germany.
| | - Caetano Reis e Sousa
- Immunobiology Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK.
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15
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Gentek R, Ghigo C, Hoeffel G, Jorquera A, Msallam R, Wienert S, Klauschen F, Ginhoux F, Bajénoff M. Correction: Epidermal γδ T cells originate from yolk sac hematopoiesis and clonally self-renew in the adult. J Exp Med 2018; 215:3213. [PMID: 30470720 PMCID: PMC6279413 DOI: 10.1084/jem.2018120611142018c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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16
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Thierry GR, Kuka M, De Giovanni M, Mondor I, Brouilly N, Iannacone M, Bajénoff M. The conduit system exports locally secreted IgM from lymph nodes. J Exp Med 2018; 215:2972-2983. [PMID: 30429248 PMCID: PMC6279403 DOI: 10.1084/jem.20180344] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [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: 02/21/2018] [Revised: 09/15/2018] [Accepted: 10/17/2018] [Indexed: 01/15/2023] Open
Abstract
IgM provides early protection against pathogens. How IgM is exported out of lymph nodes remains unknown. Thierry et al. report that B cells utilize a system of paracortical conduits to rapidly export their IgM to the periphery. Immunoglobulin M (IgM) is the first type of antibody produced during acute infections and thus provides an early line of specific defense against pathogens. Being produced in secondary lymphoid organs, IgM must rapidly be exported to the blood circulation. However, it is currently unknown how such large pentameric molecules are released from lymph nodes (LNs). Here, we show that upon immunization, IgM transiently gains access to the luminal side of the conduit system, a reticular infrastructure enabling fast delivery of tissue-derived soluble substances to the LN parenchyma. Using microinjections of purified IgM, we demonstrate that conduit-associated IgM is delivered by neither the afferent lymph nor the blood, but is locally conveyed by conduits. Exploiting in vivo models, we further demonstrate that conduit-associated IgM is locally and transiently produced by activated, antigen-specific B cells migrating in the T cell zone. Thus, our study reveals that the conduit system is coopted by B cells to rapidly export secreted IgM out of LNs.
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Affiliation(s)
- Guilhem R Thierry
- Aix-Marseille Université, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Mirela Kuka
- Division of Immunology, Transplantation and Infectious Diseases and Experimental Imaging Center, IRCCS San Raffaele Scientific Institute and Vita-Salute San Raffaele University, Milan, Italy
| | - Marco De Giovanni
- Division of Immunology, Transplantation and Infectious Diseases and Experimental Imaging Center, IRCCS San Raffaele Scientific Institute and Vita-Salute San Raffaele University, Milan, Italy
| | - Isabelle Mondor
- Aix-Marseille Université, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Nicolas Brouilly
- Aix-Marseille Université, Centre National de la Recherche Scientifique, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Matteo Iannacone
- Division of Immunology, Transplantation and Infectious Diseases and Experimental Imaging Center, IRCCS San Raffaele Scientific Institute and Vita-Salute San Raffaele University, Milan, Italy
| | - Marc Bajénoff
- Aix-Marseille Université, Centre National de la Recherche Scientifique, Institut National de la Santé et de la Recherche Médicale, Centre d'Immunologie de Marseille-Luminy, Marseille, France
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17
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Gentek R, Ghigo C, Hoeffel G, Jorquera A, Msallam R, Wienert S, Klauschen F, Ginhoux F, Bajénoff M. Epidermal γδ T cells originate from yolk sac hematopoiesis and clonally self-renew in the adult. J Exp Med 2018; 215:2994-3005. [PMID: 30409784 PMCID: PMC6279412 DOI: 10.1084/jem.20181206] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [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: 06/27/2018] [Revised: 09/13/2018] [Accepted: 10/23/2018] [Indexed: 02/03/2023] Open
Abstract
The adult turnover mechanisms and hematopoietic origin of dendritic epidermal γδ T cells (DETCs) are poorly characterized. Gentek et al. demonstrate that DETCs originate from yolk sac hematopoiesis and clonally self-renew in the adult, akin to epidermal Langerhans cells. The murine epidermis harbors two immune cell lineages, Langerhans cells (LCs) and γδ T cells known as dendritic epidermal T cells (DETCs). LCs develop from both early yolk sac (YS) progenitors and fetal liver monocytes before locally self-renewing in the adult. For DETCs, the mechanisms of homeostatic maintenance and their hematopoietic origin are largely unknown. Here, we exploited multicolor fate mapping systems to reveal that DETCs slowly turn over at steady state. Like for LCs, homeostatic maintenance of DETCs is achieved by clonal expansion of tissue-resident cells assembled in proliferative units. The same mechanism, albeit accelerated, facilitates DETC replenishment upon injury. Hematopoietic lineage tracing uncovered that DETCs are established independently of definitive hematopoietic stem cells and instead originate from YS hematopoiesis, again reminiscent of LCs. DETCs thus resemble LCs concerning their maintenance, replenishment mechanisms, and hematopoietic development, suggesting that the epidermal microenvironment exerts a lineage-independent influence on the initial seeding and homeostatic maintenance of its resident immune cells.
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Affiliation(s)
- Rebecca Gentek
- 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, Marseille, France
| | - Clément Ghigo
- 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, Marseille, France
| | - Guillaume Hoeffel
- 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, Marseille, France.,Singapore Immunology Network, Agency for Science, Technology and Research, Singapore
| | - Audrey Jorquera
- 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, Marseille, France
| | - Rasha Msallam
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore
| | - Stephan Wienert
- Institute of Pathology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | | | - Florent Ginhoux
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore.,Shanghai Institute of Immunology, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Marc Bajénoff
- 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, Marseille, France
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18
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Pezoldt J, Pasztoi M, Zou M, Wiechers C, Beckstette M, Thierry GR, Vafadarnejad E, Floess S, Arampatzi P, Buettner M, Schweer J, Fleissner D, Vital M, Pieper DH, Basic M, Dersch P, Strowig T, Hornef M, Bleich A, Bode U, Pabst O, Bajénoff M, Saliba AE, Huehn J. Neonatally imprinted stromal cell subsets induce tolerogenic dendritic cells in mesenteric lymph nodes. Nat Commun 2018; 9:3903. [PMID: 30254319 PMCID: PMC6156403 DOI: 10.1038/s41467-018-06423-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/02/2018] [Indexed: 01/10/2023] Open
Abstract
Gut-draining mesenteric lymph nodes (mLNs) are important for inducing peripheral tolerance towards food and commensal antigens by providing an optimal microenvironment for de novo generation of Foxp3+ regulatory T cells (Tregs). We previously identified microbiota-imprinted mLN stromal cells as a critical component in tolerance induction. Here we show that this imprinting process already takes place in the neonatal phase, and renders the mLN stromal cell compartment resistant to inflammatory perturbations later in life. LN transplantation and single-cell RNA-seq uncover stably imprinted expression signatures in mLN fibroblastic stromal cells. Subsetting common stromal cells across gut-draining mLNs and skin-draining LNs further refine their location-specific immunomodulatory functions, such as subset-specific expression of Aldh1a2/3. Finally, we demonstrate that mLN stromal cells shape resident dendritic cells to attain high Treg-inducing capacity in a Bmp2-dependent manner. Thus, crosstalk between mLN stromal and resident dendritic cells provides a robust regulatory mechanism for the maintenance of intestinal tolerance.
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Affiliation(s)
- Joern Pezoldt
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Maria Pasztoi
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Mangge Zou
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Carolin Wiechers
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Michael Beckstette
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Guilhem R Thierry
- CNRS, INSERM, CIML, Aix Marseille University, 13284, Marseille, France
| | - Ehsan Vafadarnejad
- Helmholtz Institute for RNA-based Infection Research, 97080, Wuerzburg, Germany
| | - Stefan Floess
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Panagiota Arampatzi
- Core Unit Systems Medicine, University of Wuerzburg, 97080, Wuerzburg, Germany
| | - Manuela Buettner
- Institute of Functional and Applied Anatomy, Hannover Medical School, 30625, Hannover, Germany.,Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, 30625, Hannover, Germany
| | - Janina Schweer
- Department Molecular Infection Biology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Diana Fleissner
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Marius Vital
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Dietmar H Pieper
- Research Group Microbial Interactions and Processes, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Marijana Basic
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, 30625, Hannover, Germany
| | - Petra Dersch
- Department Molecular Infection Biology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Till Strowig
- Research Group Microbial Immune Regulation, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany
| | - Mathias Hornef
- Institute of Medical Microbiology, RWTH Aachen, 52074, Aachen, Germany
| | - André Bleich
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, 30625, Hannover, Germany
| | - Ulrike Bode
- Institute of Functional and Applied Anatomy, Hannover Medical School, 30625, Hannover, Germany
| | - Oliver Pabst
- Institute of Molecular Medicine, RWTH Aachen, 52074, Aachen, Germany
| | - Marc Bajénoff
- CNRS, INSERM, CIML, Aix Marseille University, 13284, Marseille, France
| | | | - Jochen Huehn
- Department Experimental Immunology, Helmholtz Centre for Infection Research, 38124, Braunschweig, Germany.
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19
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Gentek R, Ghigo C, Hoeffel G, Bulle MJ, Msallam R, Gautier G, Launay P, Chen J, Ginhoux F, Bajénoff M. Hemogenic Endothelial Fate Mapping Reveals Dual Developmental Origin of Mast Cells. Immunity 2018; 48:1160-1171.e5. [DOI: 10.1016/j.immuni.2018.04.025] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 03/16/2018] [Accepted: 04/23/2018] [Indexed: 12/15/2022]
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20
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Baranska A, Shawket A, Jouve M, Baratin M, Malosse C, Voluzan O, Vu Manh TP, Fiore F, Bajénoff M, Benaroch P, Dalod M, Malissen M, Henri S, Malissen B. Unveiling skin macrophage dynamics explains both tattoo persistence and strenuous removal. J Exp Med 2018; 215:1115-1133. [PMID: 29511065 PMCID: PMC5881467 DOI: 10.1084/jem.20171608] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [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: 08/31/2017] [Revised: 12/14/2017] [Accepted: 02/06/2018] [Indexed: 12/24/2022] Open
Abstract
Here we describe a new mouse model that exploits the pattern of expression of the high-affinity IgG receptor (CD64) and allows diphtheria toxin (DT)-mediated ablation of tissue-resident macrophages and monocyte-derived cells. We found that the myeloid cells of the ear skin dermis are dominated by DT-sensitive, melanin-laden cells that have been missed in previous studies and correspond to macrophages that have ingested melanosomes from neighboring melanocytes. Those cells have been referred to as melanophages in humans. We also identified melanophages in melanocytic melanoma. Benefiting of our knowledge on melanophage dynamics, we determined the identity, origin, and dynamics of the skin myeloid cells that capture and retain tattoo pigment particles. We showed that they are exclusively made of dermal macrophages. Using the possibility to delete them, we further demonstrated that tattoo pigment particles can undergo successive cycles of capture-release-recapture without any tattoo vanishing. Therefore, congruent with dermal macrophage dynamics, long-term tattoo persistence likely relies on macrophage renewal rather than on macrophage longevity.
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Affiliation(s)
- Anna Baranska
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | - Alaa Shawket
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | | | - Myriam Baratin
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | - Camille Malosse
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | - Odessa Voluzan
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | - Thien-Phong Vu Manh
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | - Frédéric Fiore
- Centre d'Immunophénomique, Aix Marseille Université, INSERM, CNRS, Marseille, France
| | - Marc Bajénoff
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | | | - Marc Dalod
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | - Marie Malissen
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France.,Centre d'Immunophénomique, Aix Marseille Université, INSERM, CNRS, Marseille, France
| | - Sandrine Henri
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France
| | - Bernard Malissen
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, INSERM, CNRS UMR, Marseille, France .,Centre d'Immunophénomique, Aix Marseille Université, INSERM, CNRS, Marseille, France
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21
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Bellomo A, Gentek R, Bajénoff M, Baratin M. Lymph node macrophages: Scavengers, immune sentinels and trophic effectors. Cell Immunol 2018; 330:168-174. [PMID: 29397903 DOI: 10.1016/j.cellimm.2018.01.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/10/2018] [Accepted: 01/14/2018] [Indexed: 01/02/2023]
Abstract
Lymph nodes (LN) are secondary lymphoid organs dispersed throughout the body that filter lymph and assist the immune system in mounting immune responses. These functions are supported by a complex stromal microarchitecture composed of mesenchymal and vascular elements. Different subsets of macrophages (MΦ) reside in the LN and are endowed with immune and trophic functions. Here we review these different subsets with particular emphasis on the recently described T cell zone MΦ. We also address the potential crosstalk between LN stromal cells and MΦ, proposing that the former constitute niches for the latter by supplying factors required for their specification, survival and turnover. In turn, MΦ could inform their stromal partners about the immune status of the LN and orchestrate the remodelling of its microanatomy during immune responses.
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Affiliation(s)
- Alicia Bellomo
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Rebecca Gentek
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Marc Bajénoff
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Myriam Baratin
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France.
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22
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Abstract
Lymph node (LN) stromal cells are being recognized as key organizers of the immune system. They assemble in complex 3D networks and hence, need to be studied in situ to fully understand their exact functions. Here, we describe two distinct but complementary procedures that allow analyzing LN stromal cells at high resolution by confocal imaging.
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Affiliation(s)
- Clément Ghigo
- Aix-Marseille University, Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM), Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Rebecca Gentek
- Aix-Marseille University, Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM), Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France
| | - Marc Bajénoff
- Aix-Marseille University, Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM), Centre d'Immunologie de Marseille-Luminy (CIML), Marseille, France.
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23
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Gentek R, Bajénoff M. Lymph Node Stroma Dynamics and Approaches for Their Visualization. Trends Immunol 2017; 38:236-247. [PMID: 28214099 DOI: 10.1016/j.it.2017.01.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 01/23/2017] [Accepted: 01/24/2017] [Indexed: 12/21/2022]
Abstract
Lymphoid stromal cells are best known as the architectural cells of lymphoid organs. For decades, they have been considered as inert elements of the immune system but this view has changed dramatically in recent years, when it was discovered that they are endowed with critical immunoregulatory functions. It is now accepted that without them, the adaptive immune response would be compromised, if not abrogated entirely. Here, we review the function of the major lymphoid stromal cell types; the way they remodel upon inflammation; discuss the available tools to track their behavior; and introduce several methodological approaches that we believe will help improving our knowledge of these pivotal cell types.
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Affiliation(s)
- Rebecca Gentek
- Aix Marseille Université, CNRS, INSERM, CIML, Marseille, France
| | - Marc Bajénoff
- Aix Marseille Université, CNRS, INSERM, CIML, Marseille, France.
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24
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Mondor I, Jorquera A, Sene C, Adriouch S, Adams R, Zhou B, Wienert S, Klauschen F, Bajénoff M. Clonal Proliferation and Stochastic Pruning Orchestrate Lymph Node Vasculature Remodeling. Immunity 2016; 45:877-888. [DOI: 10.1016/j.immuni.2016.09.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 07/08/2016] [Accepted: 08/21/2016] [Indexed: 01/06/2023]
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25
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Jarjour M, Jorquera A, Mondor I, Wienert S, Narang P, Coles MC, Klauschen F, Bajénoff M. Fate mapping reveals origin and dynamics of lymph node follicular dendritic cells. ACTA ACUST UNITED AC 2014; 211:1109-22. [PMID: 24863064 PMCID: PMC4042641 DOI: 10.1084/jem.20132409] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [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] [Indexed: 12/28/2022]
Abstract
The lymph node follicular dendritic cell (FDC) network is derived from the expansion and differentiation of marginal reticular cells, as are the new FDCs generated during an immune response. Follicular dendritic cells (FDCs) regulate B cell function and development of high affinity antibody responses but little is known about their biology. FDCs associate in intricate cellular networks within secondary lymphoid organs. In vitro and ex vivo methods, therefore, allow only limited understanding of the genuine immunobiology of FDCs in their native habitat. Herein, we used various multicolor fate mapping systems to investigate the ontogeny and dynamics of lymph node (LN) FDCs in situ. We show that LN FDC networks arise from the clonal expansion and differentiation of marginal reticular cells (MRCs), a population of lymphoid stromal cells lining the LN subcapsular sinus. We further demonstrate that during an immune response, FDCs accumulate in germinal centers and that neither the recruitment of circulating progenitors nor the division of local mature FDCs significantly contributes to this accumulation. Rather, we provide evidence that newly generated FDCs also arise from the proliferation and differentiation of MRCs, thus unraveling a critical function of this poorly defined stromal cell population.
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Affiliation(s)
- Meryem Jarjour
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille Université, UM2 Marseille, France Institut National de la Santé et de la Recherche Médicale (INSERM), UMR_S 1104 Marseille, France Centre National de la Recherche Scientifique (CNRS), UMR7280 Marseille, France Aix-Marseille Univ (AMU), F-13284 Marseille, France
| | - Audrey Jorquera
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille Université, UM2 Marseille, France Institut National de la Santé et de la Recherche Médicale (INSERM), UMR_S 1104 Marseille, France Centre National de la Recherche Scientifique (CNRS), UMR7280 Marseille, France Aix-Marseille Univ (AMU), F-13284 Marseille, France
| | - Isabelle Mondor
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille Université, UM2 Marseille, France Institut National de la Santé et de la Recherche Médicale (INSERM), UMR_S 1104 Marseille, France Centre National de la Recherche Scientifique (CNRS), UMR7280 Marseille, France Aix-Marseille Univ (AMU), F-13284 Marseille, France
| | - Stephan Wienert
- Institute of Pathology, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Priyanka Narang
- Center for Immunology and Infection, Department of Biology and Hull York Medical School, University of York, YO10 5DD York, England, UK
| | - Mark C Coles
- Center for Immunology and Infection, Department of Biology and Hull York Medical School, University of York, YO10 5DD York, England, UK
| | - Frederick Klauschen
- Institute of Pathology, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Marc Bajénoff
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille Université, UM2 Marseille, France Institut National de la Santé et de la Recherche Médicale (INSERM), UMR_S 1104 Marseille, France Centre National de la Recherche Scientifique (CNRS), UMR7280 Marseille, France Aix-Marseille Univ (AMU), F-13284 Marseille, France
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26
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Mionnet C, Mondor I, Jorquera A, Loosveld M, Maurizio J, Arcangeli ML, Ruddle NH, Nowak J, Aurrand-Lions M, Luche H, Bajénoff M. Identification of a new stromal cell type involved in the regulation of inflamed B cell follicles. PLoS Biol 2013; 11:e1001672. [PMID: 24130458 PMCID: PMC3794863 DOI: 10.1371/journal.pbio.1001672] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 08/22/2013] [Indexed: 01/18/2023] Open
Abstract
Identification of a new stromal cell type in mouse lymph nodes that can be activated by B cells to delineate the transient boundaries of B cell zones during inflammation Lymph node (LN) stromal cells provide survival signals and adhesive substrata to lymphocytes. During an immune response, B cell follicles enlarge, questioning how LN stromal cells manage these cellular demands. Herein, we used a murine fate mapping system to describe a new stromal cell type that resides in the T cell zone of resting LNs. We demonstrated that upon inflammation, B cell follicles progressively trespassed into the adjacent T cell zone and surrounded and converted these stromal cells into CXCL13 secreting cells that in return delineated the new boundaries of the growing follicle. Acute B cell ablation in inflamed LNs abolished CXCL13 secretion in these cells, while LT-β deficiency in B cells drastically affected this conversion. Altogether, we reveal the existence of a dormant stromal cell subset that can be functionally awakened by B cells to delineate the transient boundaries of their expanding territories upon inflammation. Immune responses develop in lymphoid organs such as the tonsils and lymph nodes (LNs), which are composed of leukocytes (95%) and architectural stromal cells (5%). LNs involved in mounting an immune response recruit large numbers of lymphocytes and support the division of those that recognise the foreign antigen, raising the question of how LN stromal cells manage this tremendous remodeling. In this study, we focused on specific zones within the lymph node called germinal centres that comprise dense aggregates or follicles of B lymphocytes, and investigated how lymphoid stromal cells contribute to the reorganization of primary B cell follicles into large reactive secondary follicles. Using a fate mapping system in mice, we identified a new stromal cell type that resides in the T cell zone of noninflamed resting LNs. We demonstrate that upon inflammation, B cells usually contained within B cell follicles progressively trespass into the adjacent T cell zone and surround and convert resident stromal cells into cells that can secrete CXCL13, a B cell chemokine. These CXCL13-secreting cells in turn act to delineate the new transient boundaries of the growing follicle. Identification of this distinct versatile stromal cell type adds to our understanding of mechanisms underlying compartmentalization of lymphoid organs into their functional zones.
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Affiliation(s)
- Cyrille Mionnet
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1104, Marseille, France
- Centre National de la Recherche Scientifique (CNRS), UMR7280, Marseille, France
| | - Isabelle Mondor
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1104, Marseille, France
- Centre National de la Recherche Scientifique (CNRS), UMR7280, Marseille, France
| | - Audrey Jorquera
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1104, Marseille, France
- Centre National de la Recherche Scientifique (CNRS), UMR7280, Marseille, France
| | - Marie Loosveld
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1104, Marseille, France
- Centre National de la Recherche Scientifique (CNRS), UMR7280, Marseille, France
| | - Julien Maurizio
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1104, Marseille, France
- Centre National de la Recherche Scientifique (CNRS), UMR7280, Marseille, France
| | - Marie-Laure Arcangeli
- INSERM, U1068, CRCM, Marseille, France
- CNRS, UMR7258, CRCM, Marseille, France
- Aix-Marseille Univ, F-13284, Marseille, France
- Institut Paoli-Calmettes, Marseille, France
| | - Nancy H. Ruddle
- Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Jonathan Nowak
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1104, Marseille, France
- Centre National de la Recherche Scientifique (CNRS), UMR7280, Marseille, France
| | - Michel Aurrand-Lions
- INSERM, U1068, CRCM, Marseille, France
- CNRS, UMR7258, CRCM, Marseille, France
- Aix-Marseille Univ, F-13284, Marseille, France
- Institut Paoli-Calmettes, Marseille, France
| | - Hervé Luche
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1104, Marseille, France
- Centre National de la Recherche Scientifique (CNRS), UMR7280, Marseille, France
| | - Marc Bajénoff
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille University, UM2, Marseille, France
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1104, Marseille, France
- Centre National de la Recherche Scientifique (CNRS), UMR7280, Marseille, France
- * E-mail:
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27
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Ghigo C, Mondor I, Jorquera A, Nowak J, Wienert S, Zahner SP, Clausen BE, Luche H, Malissen B, Klauschen F, Bajénoff M. Multicolor fate mapping of Langerhans cell homeostasis. ACTA ACUST UNITED AC 2013; 210:1657-64. [PMID: 23940255 PMCID: PMC3754858 DOI: 10.1084/jem.20130403] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [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] [Indexed: 01/08/2023]
Abstract
The adult epidermal Langerhans cell network is formed by adjacent proliferative units composed of dividing cells and their terminally differentiated daughter cells. Langerhans cells (LCs) constitute a network of immune sentinels in the skin epidermis that is seeded during embryogenesis. Whereas the development of LCs has been extensively studied, much less is known about the homeostatic renewal of adult LCs in “nonmanipulated” animals. Here, we present a new multicolor fluorescent fate mapping system and quantification approach to investigate adult LC homeostasis. This novel approach enables us to propose and provide evidence for a model in which the adult epidermal LC network is not formed by mature coequal LCs endowed with proliferative capabilities, but rather constituted by adjacent proliferative units composed of “dividing” LCs and their terminally differentiated daughter cells. Altogether, our results demonstrate the general utility of our novel fate-mapping system to follow cell population dynamics in vivo and to establish an alternative model for LC homeostasis.
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Affiliation(s)
- Clément Ghigo
- Centre d'Immunologie de Marseille-Luminy (CIML), Aix-Marseille Université, Marseille, France
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28
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Abstract
Lymphocytes continuously patrol the secondary lymphoid organs (SLOs) of mammals in search for their cognate antigens. SLOs are composed of leucocytes (~95%) and lymphoid stromal cells (~5%) that form the structural framework of these organs. These sessile cells have been considered for decades as inert elements of the immune system. This simplistic view has dramatically changed in recent years, when it was discovered that these architectural cells are endowed with immuno-regulatory functions. Lymph nodes (LNs) are located at the interface between the blood and lymphatic systems, thus allowing tissue-derived antigen/antigen presenting cells (APCs) to gather with blood-derived lymphocytes. As a typical LN contains ~10 million of tightly packed cells, this accumulation of immune cells and information is probably not sufficient to foster the rare cellular interactions mandatory to the initiation of adaptative immune responses. Herein, I review some of the physicochemical elements of stromal cells that are used to transport and guide immune cells and soluble molecules within LNs.
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Affiliation(s)
- Marc Bajénoff
- Centre d'Immunologie de Marseille-Luminy, Parc Scientifique et Technologique de Marseille Luminy, Aix-Marseille University, UM2 Marseille, France ; Institut National de la Santé et de la Recherche Médicale, U1104 Marseille, France ; Centre National de la Recherche Scientifique, UMR 7280 Marseille, France
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29
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Jaeger BN, Donadieu J, Cognet C, Bernat C, Ordoñez-Rueda D, Barlogis V, Mahlaoui N, Fenis A, Narni-Mancinelli E, Beaupain B, Bellanné-Chantelot C, Bajénoff M, Malissen B, Malissen M, Vivier E, Ugolini S. Neutrophil depletion impairs natural killer cell maturation, function, and homeostasis. ACTA ACUST UNITED AC 2012; 209:565-80. [PMID: 22393124 PMCID: PMC3302230 DOI: 10.1084/jem.20111908] [Citation(s) in RCA: 162] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Neutropenia in mice and humans results in the generation of NK cells with an immature and hyporesponsive phenotype. Natural killer (NK) cells are bone marrow (BM)–derived granular lymphocytes involved in immune defense against microbial infections and tumors. In an N-ethyl N-nitrosourea (ENU) mutagenesis strategy, we identified a mouse mutant with impaired NK cell reactivity both in vitro and in vivo. Dissection of this phenotype showed that mature neutrophils were required both in the BM and in the periphery for proper NK cell development. In mice lacking neutrophils, NK cells displayed hyperproliferation and poor survival and were blocked at an immature stage associated with hyporesponsiveness. The role of neutrophils as key regulators of NK cell functions was confirmed in patients with severe congenital neutropenia and autoimmune neutropenia. In addition to their direct antimicrobial activity, mature neutrophils are thus endowed with immunoregulatory functions that are conserved across species. These findings reveal novel types of cooperation between cells of the innate immune system and prompt examination of NK cell functional deficiency in patients suffering from neutropenia-associated diseases.
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Affiliation(s)
- Baptiste N Jaeger
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille Université UM 631, Campus de Luminy case 906, 13288 Marseille, France
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30
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Bajénoff M, Narni-Mancinelli E, Brau F, Lauvau G. Visualizing early splenic memory CD8+ T cells reactivation against intracellular bacteria in the mouse. PLoS One 2010; 5:e11524. [PMID: 20634957 PMCID: PMC2902518 DOI: 10.1371/journal.pone.0011524] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Accepted: 06/13/2010] [Indexed: 12/20/2022] Open
Abstract
Memory CD8(+) T cells represent an important effector arm of the immune response in maintaining long-lived protective immunity against viruses and some intracellular bacteria such as Listeria monocytogenes (L.m). Memory CD8(+) T cells are endowed with enhanced antimicrobial effector functions that perfectly tail them to rapidly eradicate invading pathogens. It is largely accepted that these functions are sufficient to explain how memory CD8(+) T cells can mediate rapid protection. However, it is important to point out that such improved functional features would be useless if memory cells were unable to rapidly find the pathogen loaded/infected cells within the infected organ. Growing evidences suggest that the anatomy of secondary lymphoid organs (SLOs) fosters the cellular interactions required to initiate naive adaptive immune responses. However, very little is known on how the SLOs structures regulate memory immune responses. Using Listeria monocytogenes (L.m) as a murine infection model and imaging techniques, we have investigated if and how the architecture of the spleen plays a role in the reactivation of memory CD8(+) T cells and the subsequent control of L.m growth. We observed that in the mouse, memory CD8(+) T cells start to control L.m burden 6 hours after the challenge infection. At this very early time point, L.m-specific and non-specific memory CD8(+) T cells localize in the splenic red pulp and form clusters around L.m infected cells while naïve CD8(+) T cells remain in the white pulp. Within these clusters that only last few hours, memory CD8(+) T produce inflammatory cytokines such as IFN-gamma and CCL3 nearby infected myeloid cells known to be crucial for L.m killing. Altogether, we describe how memory CD8(+) T cells trafficking properties and the splenic micro-anatomy conjugate to create a spatio-temporal window during which memory CD8(+) T cells provide a local response by secreting effector molecules around infected cells.
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Affiliation(s)
- Marc Bajénoff
- Institut National de la Santé et de la Recherche Médicale Unité 924, Groupe Avenir, Valbonne, France
- Université de Nice-Sophia Antipolis, Nice, France
- Centre d'Immunologie de Marseille-Luminy, INSERM, UMR-S 631, Marseille, France
- CNRS, UMR 6102, Marseille, France
- Université de la Méditerranée, UM 631, Marseille, France
- CNRS-UMR6097, IPMC, Valbonne, France
- * E-mail: (MB); (GL)
| | - Emilie Narni-Mancinelli
- Institut National de la Santé et de la Recherche Médicale Unité 924, Groupe Avenir, Valbonne, France
- Université de Nice-Sophia Antipolis, Nice, France
| | - Frédéric Brau
- Université de Nice-Sophia Antipolis, Nice, France
- CNRS, UMR 6102, Marseille, France
| | - Grégoire Lauvau
- Institut National de la Santé et de la Recherche Médicale Unité 924, Groupe Avenir, Valbonne, France
- Université de Nice-Sophia Antipolis, Nice, France
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, New York, New York, United States of America
- * E-mail: (MB); (GL)
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31
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Bajénoff M, Glaichenhaus N, Germain RN. Fibroblastic reticular cells guide T lymphocyte entry into and migration within the splenic T cell zone. J Immunol 2008; 181:3947-54. [PMID: 18768849 DOI: 10.4049/jimmunol.181.6.3947] [Citation(s) in RCA: 179] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Although a great deal is known about T cell entry into lymph nodes, much less is understood about how T lymphocytes access the splenic white pulp (WP). We show in this study that, as recently described for lymph nodes, fibroblastic reticular cells (FRCs) form a network in the T cell zone (periarteriolar lymphoid sheath, PALS) of the WP on which T lymphocytes migrate. This network connects the PALS to the marginal zone (MZ), which is the initial site of lymphocyte entry from the blood. T cells do not enter the WP at random locations but instead traffic to that site using the FRC-rich MZ bridging channels (MZBCs). These data reveal that FRCs form a substrate for T cells in the spleen, guiding these lymphocytes from their site of entry in the MZ into the PALS, within which they continue to move on the same network.
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Affiliation(s)
- Marc Bajénoff
- Lymphocyte Biology Section, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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32
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Germain RN, Bajénoff M, Castellino F, Chieppa M, Egen JG, Huang AYC, Ishii M, Koo LY, Qi H. Making friends in out-of-the-way places: how cells of the immune system get together and how they conduct their business as revealed by intravital imaging. Immunol Rev 2008; 221:163-81. [PMID: 18275481 DOI: 10.1111/j.1600-065x.2008.00591.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [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
A central characteristic of the immune system is the constantly changing location of most of its constituent cells. Lymphoid and myeloid cells circulate in the blood, and subsets of these cells enter, move, and interact within, then leave organized lymphoid tissues. When inflammation is present, various hematopoietic cells also exit the vasculature and migrate within non-lymphoid tissues, where they carry out effector functions that support host defense or result in autoimmune pathology. Effective innate and adaptive immune responses involve not only the action of these individual cells but also productive communication among them, often requiring direct membrane contact between rare antigen-specific or antigen-bearing cells. Here, we describe our ongoing studies using two-photon intravital microscopy to probe the in situ behavior of the cells of the immune system and their interactions with non-hematopoietic stromal elements. We emphasize the importance of non-random cell migration within lymphoid tissues and detail newly established mechanisms of traffic control that operate at multiple organizational scales to facilitate critical cell contacts. We also describe how the methods we have developed for imaging within lymphoid sites are being applied to other tissues and organs, revealing dynamic details of host-pathogen interactions previously inaccessible to direct observation.
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Affiliation(s)
- Ronald N Germain
- Laboratory of Immunology, Lymphocyte Biology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892-1892, USA.
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33
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Bajénoff M, Germain RN. Seeing is believing: a focus on the contribution of microscopic imaging to our understanding of immune system function. Eur J Immunol 2008; 37 Suppl 1:S18-33. [PMID: 17972341 DOI: 10.1002/eji.200737663] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Many cells of the immune system do not occupy fixed tissue locations, but circulate in the blood, traffic through the lymph, and migrate within organized lymphoid organs and periphery tissues. Rare antigen-specific lymphocytes must find one another for productive adaptive immune responses and the different phases of cell-mediated and humoral immune response development take place in distinct sites. This historical feature examines how we have reached our current understanding of these aspects of immune system function. It emphasizes the critical role of ever-improving imaging techniques in determining where immune cells reside and interact and stresses the key past contribution of sequential static immunohistochemical analysis using monoclonal reagents. In combination with genetic studies, these imaging experiments resulted in our current paradigm that views activation-dependent changes in chemokine sensitivity as central to effective cell co-operation. We also highlight the very recent application of two-photon imaging to the direct observation of immune cell dynamics in a natural tissue environment, noting how the application of this technology has reinforced some existing ideas and is changing other long-held views. We conclude with some speculations about the opportunities for further advances using ever more powerful imaging methods.
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Affiliation(s)
- Marc Bajénoff
- Lymphocyte Biology Section, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892-1892, USA
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34
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Bajénoff M, Egen JG, Qi H, Huang AYC, Castellino F, Germain RN. Highways, byways and breadcrumbs: directing lymphocyte traffic in the lymph node. Trends Immunol 2007; 28:346-52. [PMID: 17625969 DOI: 10.1016/j.it.2007.06.005] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2007] [Revised: 05/23/2007] [Accepted: 06/15/2007] [Indexed: 12/31/2022]
Abstract
The lymph node (LN) is charged with a crucial function in the mammalian immune system: to facilitate physical interactions between extremely rare cells arriving from different tissue compartments. Paramount to carrying out this function is its unique placement at the interface between the blood and lymphatic systems, thus enabling tissue-derived antigen and antigen-presenting cells, especially dendritic cells (DCs) to gather in close proximity to blood-derived antigen-specific motile lymphocytes. A generally held view is that this accumulation of cells, coupled with stochastic migration, is itself sufficient to facilitate a physiologically adequate frequency of cell-cell contacts due to random migration within the confined space of the LN. Based on recent data, we propose an expanded model of LN function in which unique architectural features and chemical signals together provide a means of enhancing otherwise unlikely encounters between sparse DCs and rare antigen-specific lymphocytes.
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Affiliation(s)
- Marc Bajénoff
- Lymphocyte Biology Section, Laboratory of Immunology, NIAID, NIH, Bethesda, MD 20892, USA
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35
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Bajénoff M. [Lymphocyte migration in stromal cell networks]. Med Sci (Paris) 2007; 23:345-7. [PMID: 17433218 DOI: 10.1051/medsci/2007234345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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36
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Bajénoff M, Egen JG, Koo LY, Laugier JP, Brau F, Glaichenhaus N, Germain RN. Stromal cell networks regulate lymphocyte entry, migration, and territoriality in lymph nodes. Immunity 2006; 25:989-1001. [PMID: 17112751 PMCID: PMC2692293 DOI: 10.1016/j.immuni.2006.10.011] [Citation(s) in RCA: 762] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2006] [Revised: 10/05/2006] [Accepted: 10/09/2006] [Indexed: 12/13/2022]
Abstract
After entry into lymph nodes (LNs), B cells migrate to follicles, whereas T cells remain in the paracortex, with each lymphocyte type showing apparently random migration within these distinct areas. Other than chemokines, the factors contributing to this spatial segregation and to the observed patterns of lymphocyte movement are poorly characterized. By combining confocal, electron, and intravital microscopy, we showed that the fibroblastic reticular cell network regulated naive T cell access to the paracortex and also supported and defined the limits of T cell movement within this domain, whereas a distinct follicular dendritic cell network similarly served as the substratum for movement of follicular B cells. These results highlight the central role of stromal microanatomy in orchestrating cell migration within the LN.
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Affiliation(s)
- Marc Bajénoff
- Lymphocyte Biology Section, Laboratory of Immunology, NIAID, National Institutes of Health, Bethesda, Maryland 20892, USA
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37
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Bajénoff M, Breart B, Huang AYC, Qi H, Cazareth J, Braud VM, Germain RN, Glaichenhaus N. Natural killer cell behavior in lymph nodes revealed by static and real-time imaging. ACTA ACUST UNITED AC 2006; 203:619-31. [PMID: 16505138 PMCID: PMC2118232 DOI: 10.1084/jem.20051474] [Citation(s) in RCA: 239] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Natural killer (NK) cells promote dendritic cell (DC) maturation and influence T cell differentiation in vitro. To better understand the nature of the putative interactions among these cells in vivo during the early phases of an adaptive immune response, we have used immunohistochemical analysis and dynamic intravital imaging to study NK cell localization and behavior in lymph nodes (LNs) in the steady state and shortly after infection with Leishmania major. In the LNs of naive mice, NK cells reside in the medulla and the paracortex, where they closely associate with DCs. In contrast to T cells, intravital microscopy revealed that NK cells in the superficial regions of LNs were slowly motile and maintained their interactions with DCs over extended times in the presence or absence of immune-activating signals. L. major induced NK cells to secrete interferon-γ and to be recruited to the paracortex, where concomitant CD4 T cell activation occurred. Therefore, NK cells form a reactive but low mobile network in a strategic area of the LN where they can receive inflammatory signals, interact with DCs, and regulate colocalized T cell responses.
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MESH Headings
- Animals
- CD4-Positive T-Lymphocytes/immunology
- CD4-Positive T-Lymphocytes/parasitology
- CD4-Positive T-Lymphocytes/pathology
- Cell Differentiation/immunology
- Humans
- Immunohistochemistry/methods
- Inflammation/immunology
- Inflammation/parasitology
- Inflammation/pathology
- Interferon-gamma/immunology
- Killer Cells, Natural/immunology
- Killer Cells, Natural/parasitology
- Killer Cells, Natural/pathology
- Leishmania major/immunology
- Leishmaniasis, Cutaneous/immunology
- Leishmaniasis, Cutaneous/parasitology
- Leishmaniasis, Cutaneous/pathology
- Lymph Nodes/immunology
- Lymph Nodes/parasitology
- Lymph Nodes/pathology
- Lymphocyte Activation/immunology
- Mice
- Mice, Inbred BALB C
- Mice, Transgenic
- Microscopy, Fluorescence, Multiphoton/methods
- Signal Transduction/immunology
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Affiliation(s)
- Marc Bajénoff
- Institut National de la Santé et de la Recherche Médicale, Université de Nice-Sophia Antipolis, E03-44, 06560 Valbonne, France.
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38
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Wurtz O, Bajénoff M, Guerder S. IL-4-mediated inhibition of IFN-gamma production by CD4+ T cells proceeds by several developmentally regulated mechanisms. Int Immunol 2004; 16:501-8. [PMID: 14978023 DOI: 10.1093/intimm/dxh050] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The mechanisms by which Th1 and Th2 cells inter-regulate in vivo are still poorly understood. In this study we examined the plasticity of Th1 cell differentiation and how Th2 cells may down-regulate these responses. We show here that IL-4 affects Th1 cell responses by two developmentally regulated mechanisms. During the commitment phase of naive CD4+ T cells, IL-4 inhibits Th1 cell differentiation and induces a reversion of developing Th1 cells to the Th2 lineage. In contrast, for effector Th1 cells IL-4 does not affect the developmental process, but only the transcription of the IFN-gamma gene. We further show that the difference in IL-4 responsiveness correlates with a loss, in effector Th1 cells, of IL-4-dependent up-regulation of GATA-3 expression despite normal activation of STAT6. Transient inhibition of IFN-gamma production by differentiated effector cells may explain why Th1 and Th2 responses can co-exist in vivo although Th2 effector cells dominate functionally, as observed in some infectious or autoimmune mice models.
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Affiliation(s)
- Olivier Wurtz
- Centre d'Immunologie de Marseille-Luminy, Institut National de la Santé et de la Recherche Médicale/Centre National de la Recherche Scientifique/Université de la Méditerranée, Parc Scientifique de Luminy, Case 906, 13288 Marseille Cedex 09, France
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39
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Abstract
The differentiation of naive T cells into effector Th1 cells is a complex process that may proceed in two steps, commitment and development. Initial TCR engagement and IFN-gamma signaling instruct the T cells to commit to the Th1 lineage, while subsequent IL-12 and potentially TCR signaling induces final differentiation into irreversible, Th1 effector cells. In agreement with a multistep process of Th1 cell differentiation, effector Th1 cell generation requires repeated TCR and cytokine signaling, thus raising the possibility that commitment and differentiation processes may occur in two distinct anatomical sites, the lymphoid organ and the site of infection, respectively. We tested this possibility using a model of skin sensitization that permits a direct analysis of Ag-specific T cells both within lymphoid organs and at the site of sensitization. We show in this study that Ag presentation in the skin does not induce further differentiation of skin-infiltrating T cells that are highly divided and fully differentiated effector cells. Thus, effector Th1 cell differentiation is completed within lymphoid organs. In addition, we examined the heterogeneity of CD4 T cell responses in vivo through the analysis of the expression, by activated T cells, of different selectins, including P-selectin ligand and CD62L known to define separable effector populations. We delineated, in lymph nodes, at least five distinct subpopulations of activated CD4 T cells with different phenotypes and recirculation properties. Collectively, these results show that the lymphoid environment orchestrates T cell activation to generate a repertoire of effector T cells with a diversity of effector functions.
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Affiliation(s)
- Marc Bajénoff
- Centre d'Immunologie de Marseille-Luminy, Institut National de la Santé et de la Recherche Médicale, Université de la Méditerranée, Parc Scientifique de Luminy, Marseille, France
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40
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Bajénoff M, Granjeaud S, Guerder S. The strategy of T cell antigen-presenting cell encounter in antigen-draining lymph nodes revealed by imaging of initial T cell activation. J Exp Med 2003; 198:715-24. [PMID: 12953093 PMCID: PMC2194192 DOI: 10.1084/jem.20030167] [Citation(s) in RCA: 159] [Impact Index Per Article: 7.6] [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: 11/04/2022] Open
Abstract
The development of an immune response critically relies on the encounter of rare antigen (Ag)-specific T cells with dendritic cells (DCs) presenting the relevant Ag. How two rare cells find each other in the midst of irrelevant other cells in lymph nodes (LNs) is unknown. Here we show that initial T cell activation clusters are generated near high endothelial venules (HEVs) in the outer paracortex of draining LNs by retention of Ag-specific T cells as they exit from HEVs. We further show that tissue-derived DCs preferentially home in the vicinity of HEVs, thus defining the site of cluster generation. At this location DCs efficiently scan all incoming T cells and selectively retain those specific for the major histocompatibility complex-peptide complexes the DCs present. Such strategic positioning of DCs on the entry route of T cells into the paracortex may foster T cell-DC encounter and thus optimize initial T cell activation in vivo.
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Affiliation(s)
- Marc Bajénoff
- Centre d'Immunologie de Marseille-Luminy, INSERM/Centre National de la Recherche Scientifique, Université de la Méditerranée, Parc Scientifique de Luminy, Case 906, 13288 Marseille Cedex 09, France
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41
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Bajénoff M, Wurtz O, Guerder S. Repeated antigen exposure is necessary for the differentiation, but not the initial proliferation, of naive CD4(+) T cells. J Immunol 2002; 168:1723-9. [PMID: 11823503 DOI: 10.4049/jimmunol.168.4.1723] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The mechanisms that regulate CD4(+) T cells responses in vivo are still poorly understood. We show here that initial Ag stimulation induces in CD4(+) T cells a program of proliferation that can develop, for at least seven cycles of division, in the absence of subsequent Ag or cytokine requirement. Thereafter, proliferation stops but can be reinitiated by novel Ag stimulation. This initial Ag stimulation does not however suffice to induce the differentiation of naive CD4(+) T cells into effector Th1 cells which requires multiple contacts with Ag-loaded APC. Thus, recurrent exposure to both Ag and polarizing cytokines appears to be essential for the differentiation of IFN-gamma-producing cells. Ag and cytokine availability therefore greatly limits the differentiation, but not the initial proliferation, of CD4(+) T cells into IFN-gamma-producing cells.
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Affiliation(s)
- Marc Bajénoff
- Center d'Immunologie de Marseille Luminy, Institut National de la Santé et de la Recherche Médicale/Centre National de la Recherche Scientifique/Université de la Méditérranée, Parc Scientifique de Luminy, Marseille, France
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