1
|
Golusda L, Kühl AA, Lehmann M, Dahlke K, Mueller S, Boehm-Sturm P, Saatz J, Traub H, Schnorr J, Freise C, Taupitz M, Biskup K, Blanchard V, Klein O, Sack I, Siegmund B, Paclik D. Visualization of Inflammation in Experimental Colitis by Magnetic Resonance Imaging Using Very Small Superparamagnetic Iron Oxide Particles. Front Physiol 2022; 13:862212. [PMID: 35903065 PMCID: PMC9315402 DOI: 10.3389/fphys.2022.862212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 06/16/2022] [Indexed: 11/13/2022] Open
Abstract
Inflammatory bowel diseases (IBD) comprise mainly ulcerative colitis (UC) and Crohn´s disease (CD). Both forms present with a chronic inflammation of the (gastro) intestinal tract, which induces excessive changes in the composition of the associated extracellular matrix (ECM). In UC, the inflammation is limited to the colon, whereas it can occur throughout the entire gastrointestinal tract in CD. Tools for early diagnosis of IBD are still very limited and highly invasive and measures for standardized evaluation of structural changes are scarce. To investigate an efficient non-invasive way of diagnosing intestinal inflammation and early changes of the ECM, very small superparamagnetic iron oxide nanoparticles (VSOPs) in magnetic resonance imaging (MRI) were applied in two mouse models of experimental colitis: the dextran sulfate sodium (DSS)-induced colitis and the transfer model of colitis. For further validation of ECM changes and inflammation, tissue sections were analyzed by immunohistochemistry. For in depth ex-vivo investigation of VSOPs localization within the tissue, Europium-doped VSOPs served to visualize the contrast agent by imaging mass cytometry (IMC). VSOPs accumulation in the inflamed colon wall of DSS-induced colitis mice was visualized in T2* weighted MRI scans. Components of the ECM, especially the hyaluronic acid content, were found to influence VSOPs binding. Using IMC, co-localization of VSOPs with macrophages and endothelial cells in colon tissue was shown. In contrast to the DSS model, colonic inflammation could not be visualized with VSOP-enhanced MRI in transfer colitis. VSOPs present a potential contrast agent for contrast-enhanced MRI to detect intestinal inflammation in mice at an early stage and in a less invasive manner depending on hyaluronic acid content.
Collapse
Affiliation(s)
- Laura Golusda
- Medical Department, Division of Gastroenterology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- iPATH.Berlin, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - Anja A. Kühl
- iPATH.Berlin, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Malte Lehmann
- Medical Department, Division of Gastroenterology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Katja Dahlke
- Medical Department, Division of Gastroenterology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- iPATH.Berlin, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Susanne Mueller
- Department of Experimental Neurology and Center for Stroke Research, Campus Mitte, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Cluster of Excellence and Charité Core Facility 7T Experimental MRIs, Campus Mitte, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Philipp Boehm-Sturm
- Department of Experimental Neurology and Center for Stroke Research, Campus Mitte, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- NeuroCure Cluster of Excellence and Charité Core Facility 7T Experimental MRIs, Campus Mitte, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jessica Saatz
- Bundesanstalt für Materialforschung und-prüfung (BAM), Division Inorganic Trace Analysis, Berlin, Germany
| | - Heike Traub
- Bundesanstalt für Materialforschung und-prüfung (BAM), Division Inorganic Trace Analysis, Berlin, Germany
| | - Joerg Schnorr
- Department of Radiology-Experimental Radiology, Campus Mitte, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Christian Freise
- Department of Radiology-Experimental Radiology, Campus Mitte, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Matthias Taupitz
- Department of Radiology-Experimental Radiology, Campus Mitte, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Karina Biskup
- Campus Virchow-Klinikum, Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Véronique Blanchard
- Campus Virchow-Klinikum, Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Oliver Klein
- BIH-Center for Regenerative Therapies, Campus Virchow-Klinikum, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Ingolf Sack
- Department of Radiology-Experimental Radiology, Campus Mitte, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Britta Siegmund
- Medical Department, Division of Gastroenterology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Daniela Paclik
- Medical Department, Division of Gastroenterology, Infectiology and Rheumatology, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- iPATH.Berlin, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
- *Correspondence: Daniela Paclik,
| |
Collapse
|
2
|
Golusda L, Kühl AA, Siegmund B, Paclik D. Reducing Pain in Experimental Models of Intestinal Inflammation Affects the Immune Response. Inflamm Bowel Dis 2022; 28:801-807. [PMID: 34871378 PMCID: PMC9074866 DOI: 10.1093/ibd/izab290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Indexed: 12/09/2022]
Abstract
The incidence of inflammatory bowel disease with its two main manifestations, colitis ulcerosa and Crohn's disease, is rising globally year after year. There is still a tremendous need to study the underlying pathomechanisms and a well-established tool in order to better understand the disease are colitis models in rodents. Since the concept of the 3Rs was proposed by Russell and Burch, this would include pain medication in animal models of intestinal inflammation as a reduction of suffering. This review argues against pain medication because the administration of pain medication in its current form has an impact on the inflammatory process and the immune response, thus falsifying the results and the reproducibility and therefore leading to misconceptions.
Collapse
Affiliation(s)
- Laura Golusda
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, iPATH.Berlin, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Gastroenterology, Infectious Diseases, and Rheumatology, Berlin, Germanyand
- Institute of Chemistry and Biochemistry, Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - Anja A Kühl
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, iPATH.Berlin, Berlin, Germany
| | - Britta Siegmund
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Gastroenterology, Infectious Diseases, and Rheumatology, Berlin, Germanyand
| | - Daniela Paclik
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, iPATH.Berlin, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Gastroenterology, Infectious Diseases, and Rheumatology, Berlin, Germanyand
| |
Collapse
|
3
|
Georg P, Astaburuaga-García R, Bonaguro L, Brumhard S, Michalick L, Lippert LJ, Kostevc T, Gäbel C, Schneider M, Streitz M, Demichev V, Gemünd I, Barone M, Tober-Lau P, Helbig ET, Hillus D, Petrov L, Stein J, Dey HP, Paclik D, Iwert C, Mülleder M, Aulakh SK, Djudjaj S, Bülow RD, Mei HE, Schulz AR, Thiel A, Hippenstiel S, Saliba AE, Eils R, Lehmann I, Mall MA, Stricker S, Röhmel J, Corman VM, Beule D, Wyler E, Landthaler M, Obermayer B, von Stillfried S, Boor P, Demir M, Wesselmann H, Suttorp N, Uhrig A, Müller-Redetzky H, Nattermann J, Kuebler WM, Meisel C, Ralser M, Schultze JL, Aschenbrenner AC, Thibeault C, Kurth F, Sander LE, Blüthgen N, Sawitzki B. Complement activation induces excessive T cell cytotoxicity in severe COVID-19. Cell 2022; 185:493-512.e25. [PMID: 35032429 PMCID: PMC8712270 DOI: 10.1016/j.cell.2021.12.040] [Citation(s) in RCA: 100] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 10/22/2021] [Accepted: 12/22/2021] [Indexed: 12/20/2022]
Abstract
Severe COVID-19 is linked to both dysfunctional immune response and unrestrained immunopathology, and it remains unclear whether T cells contribute to disease pathology. Here, we combined single-cell transcriptomics and single-cell proteomics with mechanistic studies to assess pathogenic T cell functions and inducing signals. We identified highly activated CD16+ T cells with increased cytotoxic functions in severe COVID-19. CD16 expression enabled immune-complex-mediated, T cell receptor-independent degranulation and cytotoxicity not found in other diseases. CD16+ T cells from COVID-19 patients promoted microvascular endothelial cell injury and release of neutrophil and monocyte chemoattractants. CD16+ T cell clones persisted beyond acute disease maintaining their cytotoxic phenotype. Increased generation of C3a in severe COVID-19 induced activated CD16+ cytotoxic T cells. Proportions of activated CD16+ T cells and plasma levels of complement proteins upstream of C3a were associated with fatal outcome of COVID-19, supporting a pathological role of exacerbated cytotoxicity and complement activation in COVID-19.
Collapse
Affiliation(s)
- Philipp Georg
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Rosario Astaburuaga-García
- Institute of Pathology, Charité - Universitätsmedizin Berlin, Berlin, Germany; IRI Life Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Lorenzo Bonaguro
- Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany; Systems Medicine, Deutsches Zentrum für Neurodegenerativen Erkrankungen (DZNE), Bonn, Germany
| | - Sophia Brumhard
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Laura Michalick
- Institute of Physiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Lena J Lippert
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Tomislav Kostevc
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Christiane Gäbel
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Maria Schneider
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Mathias Streitz
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Vadim Demichev
- Molecular Biology of Metabolism Laboratory, The Francis Crick Institute, London, UK; Department of Biochemistry, Charité - Universitätsmedizin Berlin, Berlin, Germany; Department of Biochemistry, Cambridge Centre for Proteomics, University of Cambridge, Cambridge, UK
| | - Ioanna Gemünd
- Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany; PRECISE Platform for Genomics and Epigenomics at DZNE, University of Bonn, Bonn, Germany; Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Matthias Barone
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Pinkus Tober-Lau
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Elisa T Helbig
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - David Hillus
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Lev Petrov
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Julia Stein
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Hannah-Philine Dey
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Daniela Paclik
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Christina Iwert
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Michael Mülleder
- Core Facility, High Throughput Mass Spectrometry, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Simran Kaur Aulakh
- Molecular Biology of Metabolism Laboratory, The Francis Crick Institute, London, UK
| | - Sonja Djudjaj
- Institute of Pathology, University Clinic Aachen, RWTH Aachen, Aachen, Germany
| | - Roman D Bülow
- Institute of Pathology, University Clinic Aachen, RWTH Aachen, Aachen, Germany
| | - Henrik E Mei
- Mass Cytometry Laboratory, DRFZ Berlin, A Leibniz Institute, Berlin, Germany
| | - Axel R Schulz
- Mass Cytometry Laboratory, DRFZ Berlin, A Leibniz Institute, Berlin, Germany
| | - Andreas Thiel
- Si-M/"Der Simulierte Mensch" a Science Framework of Technische Universität Berlin and Charité - Universitätsmedizin Berlin, Berlin, Germany; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Stefan Hippenstiel
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Antoine-Emmanuel Saliba
- Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz Center for Infection Research (HZI), Würzburg, Germany
| | - Roland Eils
- Center for Digital Health, Berlin Institute of Health (BIH), Charité - Universitätsmedizin Berlin, Berlin, Germany; German Center for Lung Research (DZL), Berlin, Germany
| | - Irina Lehmann
- Center for Digital Health, Berlin Institute of Health (BIH), Charité - Universitätsmedizin Berlin, Berlin, Germany; German Center for Lung Research (DZL), Berlin, Germany
| | - Marcus A Mall
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany; German Center for Lung Research (DZL), Associated Partner, Berlin, Germany; Berlin Institute of Health (BIH), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sebastian Stricker
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Jobst Röhmel
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Victor M Corman
- Institute of Virology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Dieter Beule
- Core Unit Bioinformatics, Berlin Institute of Health (BIH), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Emanuel Wyler
- Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Berlin Institute for Medical Systems Biology, Berlin, Germany
| | - Markus Landthaler
- IRI Life Sciences, Humboldt-Universität zu Berlin, Berlin, Germany; Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Berlin Institute for Medical Systems Biology, Berlin, Germany
| | - Benedikt Obermayer
- Core Unit Bioinformatics, Berlin Institute of Health (BIH), Charité - Universitätsmedizin Berlin, Berlin, Germany
| | | | - Peter Boor
- Institute of Pathology, University Clinic Aachen, RWTH Aachen, Aachen, Germany; Department of Nephrology, University Clinic Aachen, RWTH Aachen, Aachen, Germany; Electron Microscopy Facility, University Clinic Aachen, RWTH Aachen, Aachen, Germany
| | - Münevver Demir
- Department of Hepatology and Gastroenterology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Hans Wesselmann
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Norbert Suttorp
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany; German Center for Lung Research (DZL), Gießen, Germany
| | - Alexander Uhrig
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Holger Müller-Redetzky
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Jacob Nattermann
- Department of Internal Medicine I, University Hospital Bonn, Bonn, Germany
| | - Wolfgang M Kuebler
- Institute of Physiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Christian Meisel
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany; Department of Immunology, Labor Berlin, Charité Vivantes, Berlin, Germany
| | - Markus Ralser
- Molecular Biology of Metabolism Laboratory, The Francis Crick Institute, London, UK; Department of Biochemistry, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Joachim L Schultze
- Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany; Systems Medicine, Deutsches Zentrum für Neurodegenerativen Erkrankungen (DZNE), Bonn, Germany; PRECISE Platform for Genomics and Epigenomics at DZNE, University of Bonn, Bonn, Germany
| | - Anna C Aschenbrenner
- Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany; Systems Medicine, Deutsches Zentrum für Neurodegenerativen Erkrankungen (DZNE), Bonn, Germany; PRECISE Platform for Genomics and Epigenomics at DZNE, University of Bonn, Bonn, Germany; Department of Internal Medicine, Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Charlotte Thibeault
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Florian Kurth
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany; Department of Tropical Medicine, Bernhard Nocht Institute for Tropical Medicine, Department of Medicine I, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Leif E Sander
- Department of Infectious Diseases and Respiratory Medicine, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Nils Blüthgen
- Institute of Pathology, Charité - Universitätsmedizin Berlin, Berlin, Germany; IRI Life Sciences, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Birgit Sawitzki
- Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany; Berlin Institute of Health (BIH), Charité - Universitätsmedizin Berlin, Berlin, Germany.
| |
Collapse
|
4
|
Schulte-Schrepping J, Reusch N, Paclik D, Baßler K, Schlickeiser S, Zhang B, Krämer B, Krammer T, Brumhard S, Bonaguro L, De Domenico E, Wendisch D, Grasshoff M, Kapellos TS, Beckstette M, Pecht T, Saglam A, Dietrich O, Mei HE, Schulz AR, Conrad C, Kunkel D, Vafadarnejad E, Xu CJ, Horne A, Herbert M, Drews A, Thibeault C, Pfeiffer M, Hippenstiel S, Hocke A, Müller-Redetzky H, Heim KM, Machleidt F, Uhrig A, Bosquillon de Jarcy L, Jürgens L, Stegemann M, Glösenkamp CR, Volk HD, Goffinet C, Landthaler M, Wyler E, Georg P, Schneider M, Dang-Heine C, Neuwinger N, Kappert K, Tauber R, Corman V, Raabe J, Kaiser KM, Vinh MT, Rieke G, Meisel C, Ulas T, Becker M, Geffers R, Witzenrath M, Drosten C, Suttorp N, von Kalle C, Kurth F, Händler K, Schultze JL, Aschenbrenner AC, Li Y, Nattermann J, Sawitzki B, Saliba AE, Sander LE. Severe COVID-19 Is Marked by a Dysregulated Myeloid Cell Compartment. Cell 2020; 182:1419-1440.e23. [PMID: 32810438 PMCID: PMC7405822 DOI: 10.1016/j.cell.2020.08.001] [Citation(s) in RCA: 908] [Impact Index Per Article: 227.0] [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] [Received: 05/27/2020] [Revised: 07/13/2020] [Accepted: 07/31/2020] [Indexed: 02/07/2023]
Abstract
Coronavirus disease 2019 (COVID-19) is a mild to moderate respiratory tract infection, however, a subset of patients progress to severe disease and respiratory failure. The mechanism of protective immunity in mild forms and the pathogenesis of severe COVID-19 associated with increased neutrophil counts and dysregulated immune responses remain unclear. In a dual-center, two-cohort study, we combined single-cell RNA-sequencing and single-cell proteomics of whole-blood and peripheral-blood mononuclear cells to determine changes in immune cell composition and activation in mild versus severe COVID-19 (242 samples from 109 individuals) over time. HLA-DRhiCD11chi inflammatory monocytes with an interferon-stimulated gene signature were elevated in mild COVID-19. Severe COVID-19 was marked by occurrence of neutrophil precursors, as evidence of emergency myelopoiesis, dysfunctional mature neutrophils, and HLA-DRlo monocytes. Our study provides detailed insights into the systemic immune response to SARS-CoV-2 infection and reveals profound alterations in the myeloid cell compartment associated with severe COVID-19.
Collapse
Affiliation(s)
| | - Nico Reusch
- Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Daniela Paclik
- Institute of Medical Immunology, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Kevin Baßler
- Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Stephan Schlickeiser
- Institute of Medical Immunology, Charité, Universitätsmedizin Berlin, Berlin, Germany; BIH Center for Regenerative Therapies, Charité, Universitätsmedizin Berlin, and Berlin Institute of Health (BIH) Berlin, Germany
| | - Bowen Zhang
- Centre for Individualised Infection Medicine (CiiM) and TWINCORE, joint ventures between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Hannover, Germany
| | - Benjamin Krämer
- Department of Internal Medicine I, University Hospital Bonn, Bonn, Germany
| | - Tobias Krammer
- Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz-Center for Infection Research (HZI), Würzburg, Germany
| | - Sophia Brumhard
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Lorenzo Bonaguro
- Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Elena De Domenico
- German Center for Neurodegenerative Diseases (DZNE), PRECISE Platform for Genomics and Epigenomics at DZNE, and University of Bonn, Bonn, Germany
| | - Daniel Wendisch
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Martin Grasshoff
- Centre for Individualised Infection Medicine (CiiM) and TWINCORE, joint ventures between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Hannover, Germany
| | | | - Michael Beckstette
- Centre for Individualised Infection Medicine (CiiM) and TWINCORE, joint ventures between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Hannover, Germany
| | - Tal Pecht
- Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Adem Saglam
- German Center for Neurodegenerative Diseases (DZNE), PRECISE Platform for Genomics and Epigenomics at DZNE, and University of Bonn, Bonn, Germany
| | - Oliver Dietrich
- Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz-Center for Infection Research (HZI), Würzburg, Germany
| | - Henrik E Mei
- Mass Cytometry Lab, DRFZ Berlin, a Leibniz Institute, Berlin, Germany
| | - Axel R Schulz
- Mass Cytometry Lab, DRFZ Berlin, a Leibniz Institute, Berlin, Germany
| | - Claudia Conrad
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Désirée Kunkel
- Flow and Mass Cytometry Core Facility, Charité, Universitätsmedizin Berlin, and Berlin Institute of Health (BIH), Berlin, Germany
| | - Ehsan Vafadarnejad
- Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz-Center for Infection Research (HZI), Würzburg, Germany
| | - Cheng-Jian Xu
- Centre for Individualised Infection Medicine (CiiM) and TWINCORE, joint ventures between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Hannover, Germany; Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Arik Horne
- Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Miriam Herbert
- Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Anna Drews
- German Center for Neurodegenerative Diseases (DZNE), PRECISE Platform for Genomics and Epigenomics at DZNE, and University of Bonn, Bonn, Germany
| | - Charlotte Thibeault
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Moritz Pfeiffer
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Stefan Hippenstiel
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany; German Center for Lung Research (DZL)
| | - Andreas Hocke
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany; German Center for Lung Research (DZL)
| | - Holger Müller-Redetzky
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Katrin-Moira Heim
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Felix Machleidt
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Alexander Uhrig
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Laure Bosquillon de Jarcy
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Linda Jürgens
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Miriam Stegemann
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph R Glösenkamp
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Hans-Dieter Volk
- Institute of Medical Immunology, Charité, Universitätsmedizin Berlin, Berlin, Germany; BIH Center for Regenerative Therapies, Charité, Universitätsmedizin Berlin, and Berlin Institute of Health (BIH) Berlin, Germany; Department of Immunology, Labor Berlin-Charité Vivantes, Berlin, Germany
| | - Christine Goffinet
- Institute of Virology, Charité Universitätsmedizin Berlin, Berlin, Germany; Berlin Institute of Health (BIH), Berlin, Germany
| | - Markus Landthaler
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Emanuel Wyler
- Berlin Institute for Medical Systems Biology, Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Philipp Georg
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Maria Schneider
- Institute of Medical Immunology, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Chantip Dang-Heine
- Clinical Study Center (CSC), Charité, Universitätsmedizin Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Nick Neuwinger
- Department of Immunology, Labor Berlin-Charité Vivantes, Berlin, Germany; Institute of Laboratory Medicine, Clinical Chemistry, and Pathobiochemistry, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Kai Kappert
- Department of Immunology, Labor Berlin-Charité Vivantes, Berlin, Germany; Institute of Laboratory Medicine, Clinical Chemistry, and Pathobiochemistry, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Rudolf Tauber
- Department of Immunology, Labor Berlin-Charité Vivantes, Berlin, Germany; Institute of Laboratory Medicine, Clinical Chemistry, and Pathobiochemistry, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Victor Corman
- Institute of Virology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Jan Raabe
- Department of Internal Medicine I, University Hospital Bonn, Bonn, Germany
| | - Kim Melanie Kaiser
- Department of Internal Medicine I, University Hospital Bonn, Bonn, Germany
| | - Michael To Vinh
- Department of Internal Medicine I, University Hospital Bonn, Bonn, Germany
| | - Gereon Rieke
- Department of Internal Medicine I, University Hospital Bonn, Bonn, Germany
| | - Christian Meisel
- Institute of Medical Immunology, Charité, Universitätsmedizin Berlin, Berlin, Germany; Department of Immunology, Labor Berlin-Charité Vivantes, Berlin, Germany
| | - Thomas Ulas
- German Center for Neurodegenerative Diseases (DZNE), PRECISE Platform for Genomics and Epigenomics at DZNE, and University of Bonn, Bonn, Germany
| | - Matthias Becker
- German Center for Neurodegenerative Diseases (DZNE), PRECISE Platform for Genomics and Epigenomics at DZNE, and University of Bonn, Bonn, Germany
| | - Robert Geffers
- Genome Analytics, Helmholtz-Center for Infection Research (HZI), Braunschweig, Germany
| | - Martin Witzenrath
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany; German Center for Lung Research (DZL)
| | - Christian Drosten
- Institute of Virology, Charité Universitätsmedizin Berlin, Berlin, Germany; German Center for Infection Research (DZIF)
| | - Norbert Suttorp
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany; German Center for Lung Research (DZL)
| | - Christof von Kalle
- Clinical Study Center (CSC), Charité, Universitätsmedizin Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Florian Kurth
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany; Department of Tropical Medicine, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany; I. Department of Medicine, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
| | - Kristian Händler
- German Center for Neurodegenerative Diseases (DZNE), PRECISE Platform for Genomics and Epigenomics at DZNE, and University of Bonn, Bonn, Germany
| | - Joachim L Schultze
- Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), PRECISE Platform for Genomics and Epigenomics at DZNE, and University of Bonn, Bonn, Germany.
| | - Anna C Aschenbrenner
- Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany; Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Yang Li
- Centre for Individualised Infection Medicine (CiiM) and TWINCORE, joint ventures between the Helmholtz-Centre for Infection Research (HZI) and the Hannover Medical School (MHH), Hannover, Germany; Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Jacob Nattermann
- Department of Internal Medicine I, University Hospital Bonn, Bonn, Germany; German Center for Infection Research (DZIF)
| | - Birgit Sawitzki
- Institute of Medical Immunology, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | - Antoine-Emmanuel Saliba
- Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz-Center for Infection Research (HZI), Würzburg, Germany
| | - Leif Erik Sander
- Department of Infectious Diseases and Respiratory Medicine, Charité, Universitätsmedizin Berlin, Berlin, Germany; German Center for Lung Research (DZL)
| |
Collapse
|
5
|
Ditgen D, Anandarajah EM, Reinhardt A, Younis AE, Witt S, Hansmann J, Lorenz E, García-Hernández M, Paclik D, Soblik H, Jolodar A, Seeberger PH, Liebau E, Brattig NW. Comparative characterization of two galectins excreted-secreted from intestine-dwelling parasitic versus free-living females of the soil-transmitted nematode Strongyloides. Mol Biochem Parasitol 2018; 225:73-83. [PMID: 30179636 DOI: 10.1016/j.molbiopara.2018.08.008] [Citation(s) in RCA: 5] [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: 04/05/2018] [Revised: 08/01/2018] [Accepted: 08/23/2018] [Indexed: 12/27/2022]
Abstract
Helminths are complex pathogens that ensure their long-term survival by influencing the immune responses of their host. Excretory/secretory products (ESP) can exert immunoregulatory effects which foster parasite survival. Galectins represent a widespread group of β-galactoside-binding proteins which are involved in a multitude of biological processes operative in parasite-host interaction. We had earlier identified seven galectins in Strongyloides ratti, four of them detected in the ESP of distinct developmental stages of the parasite. In the present report, we focused on the characterization of two of them, Sr-galectin-1 (Sr-Gal-1) and Sr-galectin-3 (Sr-Gal-3). While Sr-Gal-3 expression was strongest in parasitic females, Sr-Gal-1 was predominantly expressed in free-living females. Both proteins were cloned and recombinantly expressed in an E. coli expression system. Their glycan-binding activity was verified by haemagglutination and glycan array analysis. Furthermore, primary immunological activities of the Sr-galectins were initially investigated by the application of an in vitro mucosal 3D-culture model, comprising of mucosa-associated epithelial and dendritic cells. The Sr-galectins stimulated preferentially the release of the type 2 cytokines thymic stromal lymphopoietin and IL-22, a first indication for immunoregulatory activity. In addition, the Sr-galectins dose-dependently fostered cell migration. Our results confirm the importance of these carbohydrate-binding proteins in host-parasite-interaction by indicating possible interaction with the host mucosa-associated cells.
Collapse
Affiliation(s)
- D Ditgen
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany; Department of Molecular Physiology, University of Münster, Schlossplatz 8, 48143, Münster, Germany
| | - E M Anandarajah
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany; Department of Molecular Physiology, University of Münster, Schlossplatz 8, 48143, Münster, Germany
| | - A Reinhardt
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany; Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - A E Younis
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany; Zoology Department, Faculty of Science, Aswan University, Aswan, Egypt
| | - S Witt
- Cellular Parasitology Department, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - J Hansmann
- Translational Center Regenerative Therapies, Fraunhofer Institute for Silicate Research ISC, Department Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Würzburg, Germany
| | - E Lorenz
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany
| | - M García-Hernández
- Department of Biochemistry and Molecular Medicine, School of Medicine, Universidad Autonóma de Nuevo León (UANL), Monterrey, Mexico; Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany
| | - D Paclik
- Medical Department, Devision of Hepatology and Gastroenterology, Charité Campus Virchow Klinikum, Berlin, Germany
| | - H Soblik
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany; GALENpharma GmbH, 24109, Kiel, Germany
| | - A Jolodar
- School of Veterinary Medicine, Shahid Chamran University of Ahvaz, IR, Iran
| | - P H Seeberger
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - E Liebau
- Department of Molecular Physiology, University of Münster, Schlossplatz 8, 48143, Münster, Germany
| | - N W Brattig
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany
| |
Collapse
|
6
|
Paclik D, Stehle C, Lahmann A, Hutloff A, Romagnani C. ICOS regulates the pool of group 2 innate lymphoid cells under homeostatic and inflammatory conditions in mice. Eur J Immunol 2015; 45:2766-72. [PMID: 26249010 DOI: 10.1002/eji.201545635] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 06/24/2015] [Accepted: 07/29/2015] [Indexed: 01/21/2023]
Abstract
Group 2 innate lymphoid cells (ILC2s) are innate effectors playing an important role in the defense against helminthic infections and in the pathogenesis of allergic inflammation. Cytokines have been identified as the major stimuli driving ILC2 activation and expansion. Conversely, it is unclear whether costimulatory molecules contribute to regulation of ILC2 functions. ILC2s display high expression of inducible T-cell costimulator (ICOS), which belongs to the CD28 superfamily, and which has been shown to control late effector T-cell functions, and is of utmost importance for the humoral immune response. However, the biological function of ICOS expression on ILC2s is unknown. Here, we show that ICOS signaling in mice regulates ILC2 homeostasis independently of T cells and B cells, by promoting proliferation and accumulation of mature ILC2s in lung and intestine. In a model of IL-33-induced airway inflammation, ICOS controls ILC2 activation and eosinophil infiltration in the lung. Our data identify a role of ICOS in innate immunity and indicate that not only cytokines, but also costimulatory pathways such as those involving ICOS, can contribute to regulate the ILC2 pool. Thus, ICOS costimulation blockade, which is currently under clinical evaluation for inhibiting the humoral immune response, could also target innate inflammatory circuits.
Collapse
Affiliation(s)
- Daniela Paclik
- Innate Immunity, Deutsches Rheuma-Forschungszentrum, Leibniz-Gemeinschaft, Berlin, Germany
| | - Christina Stehle
- Innate Immunity, Deutsches Rheuma-Forschungszentrum, Leibniz-Gemeinschaft, Berlin, Germany
| | - Annette Lahmann
- Chronic Immune Reactions, Deutsches Rheuma-Forschungszentrum, Leibniz-Gemeinschaft, Berlin, Germany
| | - Andreas Hutloff
- Chronic Immune Reactions, Deutsches Rheuma-Forschungszentrum, Leibniz-Gemeinschaft, Berlin, Germany.,Molecular Immunology, Robert Koch Institute, Berlin, Germany
| | - Chiara Romagnani
- Innate Immunity, Deutsches Rheuma-Forschungszentrum, Leibniz-Gemeinschaft, Berlin, Germany
| |
Collapse
|
7
|
Montaldo E, Teixeira-Alves LG, Glatzer T, Durek P, Stervbo U, Hamann W, Babic M, Paclik D, Stölzel K, Gröne J, Lozza L, Juelke K, Matzmohr N, Loiacono F, Petronelli F, Huntington ND, Moretta L, Mingari MC, Romagnani C. Human RORγt(+)CD34(+) cells are lineage-specified progenitors of group 3 RORγt(+) innate lymphoid cells. Immunity 2014; 41:988-1000. [PMID: 25500367 DOI: 10.1016/j.immuni.2014.11.010] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 10/27/2014] [Indexed: 12/11/2022]
Abstract
Group 3 innate lymphoid cells (ILC3s) are defined by the expression of the transcription factor RORγt, which is selectively required for their development. The lineage-specified progenitors of ILC3s and their site of development after birth remain undefined. Here we identified a population of human CD34(+) hematopoietic progenitor cells (HPCs) that express RORγt and share a distinct transcriptional signature with ILC3s. RORγt(+)CD34(+) HPCs were located in tonsils and intestinal lamina propria (LP) and selectively differentiated toward ILC3s. In contrast, RORγt(-)CD34(+) HPCs could differentiate to become either ILC3s or natural killer (NK) cells, with differentiation toward ILC3 lineage determined by stem cell factor (SCF) and aryl hydrocarbon receptor (AhR) signaling. Thus, we demonstrate that in humans RORγt(+)CD34(+) cells are lineage-specified progenitors of IL-22(+) ILC3s and propose that tonsils and intestinal LP, which are enriched both in committed precursors and mature ILC3s, might represent preferential sites of ILC3 lineage differentiation.
Collapse
Affiliation(s)
- Elisa Montaldo
- Department of Experimental Medicine, University of Genova, Via LB Alberti 2, 16132 Genova, Italy; UOC Immunologia, IRCCS-AOU-San Martino-IST, L.go R. Benzi 10, 16132 Genova, Italy
| | - Luiz Gustavo Teixeira-Alves
- Innate Immunity, Deutsches Rheuma Forschungszentrum (DRFZ) Berlin, Leibniz-Gemeinschaft, Charitéplatz 1, 10117 Berlin, Germany
| | - Timor Glatzer
- Innate Immunity, Deutsches Rheuma Forschungszentrum (DRFZ) Berlin, Leibniz-Gemeinschaft, Charitéplatz 1, 10117 Berlin, Germany
| | - Pawel Durek
- Cell Biology, Deutsches Rheuma Forschungszentrum (DRFZ) Berlin, Leibniz-Gemeinschaft, Charitéplatz 1, 10117 Berlin, Germany
| | - Ulrik Stervbo
- Cell Biology, Deutsches Rheuma Forschungszentrum (DRFZ) Berlin, Leibniz-Gemeinschaft, Charitéplatz 1, 10117 Berlin, Germany
| | - Wiebke Hamann
- Innate Immunity, Deutsches Rheuma Forschungszentrum (DRFZ) Berlin, Leibniz-Gemeinschaft, Charitéplatz 1, 10117 Berlin, Germany
| | - Marina Babic
- Innate Immunity, Deutsches Rheuma Forschungszentrum (DRFZ) Berlin, Leibniz-Gemeinschaft, Charitéplatz 1, 10117 Berlin, Germany; Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, B. Branchetta 20a, 51000 Rijeka, Croatia
| | - Daniela Paclik
- Innate Immunity, Deutsches Rheuma Forschungszentrum (DRFZ) Berlin, Leibniz-Gemeinschaft, Charitéplatz 1, 10117 Berlin, Germany
| | - Katharina Stölzel
- HNO-Klinik-Charité-Universitätsmedizin, Charitéplatz 1, 10117 Berlin, Germany
| | - Jörn Gröne
- Klinik für Allgemein-, Gefäß- und Thoraxchirurgie Charité-Universitätsmedizin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Laura Lozza
- Department of Immunology, Max Planck Institute for Infection Biology, Charitéplatz 1, 10117 Berlin, Germany
| | - Kerstin Juelke
- Innate Immunity, Deutsches Rheuma Forschungszentrum (DRFZ) Berlin, Leibniz-Gemeinschaft, Charitéplatz 1, 10117 Berlin, Germany; Immune System, Berlin-Brandenburg Center for Regenerative Therapies (BCRT) Charité-Universitätsmedizin, Augustenburger Platz 1, 13353 Berlin, Germany
| | - Nadine Matzmohr
- Immune Regeneration and Aging, Berlin-Brandenburg Center for Regenerative Therapies (BCRT) Charité-Universitätsmedizin, Augustenburger Platz 1, 13353 Berlin, Germany
| | | | | | - Nicholas David Huntington
- Department of Medical Biology, The Walter and Eliza Hall Institute of Medical Research, The University of Melbourne, 1G Royal Parade, Parkville, VIC 3052, Australia
| | - Lorenzo Moretta
- Giannina Gaslini Institute, Via G. Gaslini 5, 16147 Genova, Italy
| | - Maria Cristina Mingari
- Department of Experimental Medicine, University of Genova, Via LB Alberti 2, 16132 Genova, Italy; UOC Immunologia, IRCCS-AOU-San Martino-IST, L.go R. Benzi 10, 16132 Genova, Italy
| | - Chiara Romagnani
- Innate Immunity, Deutsches Rheuma Forschungszentrum (DRFZ) Berlin, Leibniz-Gemeinschaft, Charitéplatz 1, 10117 Berlin, Germany.
| |
Collapse
|
8
|
Glatzer T, Killig M, Meisig J, Ommert I, Luetke-Eversloh M, Babic M, Paclik D, Blüthgen N, Seidl R, Seifarth C, Gröne J, Lenarz M, Stölzel K, Fugmann D, Porgador A, Hauser A, Karlas A, Romagnani C. RORγt⁺ innate lymphoid cells acquire a proinflammatory program upon engagement of the activating receptor NKp44. Immunity 2013; 38:1223-35. [PMID: 23791642 DOI: 10.1016/j.immuni.2013.05.013] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 03/05/2013] [Indexed: 12/12/2022]
Abstract
RORγt⁺ innate lymphoid cells (ILCs) are crucial players of innate immune responses and represent a major source of interleukin-22 (IL-22), which has an important role in mucosal homeostasis. The signals required by RORγt⁺ ILCs to express IL-22 and other cytokines have been elucidated only partially. Here we showed that RORγt⁺ ILCs can directly sense the environment by the engagement of the activating receptor NKp44. NKp44 triggering in RORγt⁺ ILCs selectively activated a coordinated proinflammatory program, including tumor necrosis factor (TNF), whereas cytokine stimulation preferentially induced IL-22 expression. However, combined engagement of NKp44 and cytokine receptors resulted in a strong synergistic effect. These data support the concept that NKp44⁺ RORγt⁺ ILCs can be activated without cytokines and are able to switch between IL-22 or TNF production, depending on the triggering stimulus.
Collapse
Affiliation(s)
- Timor Glatzer
- Innate Immunity, Deutsches Rheuma-Forschungszentrum-Leibniz-Gemeinschaft, 10117 Berlin, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Werner L, Paclik D, Fritz C, Reinhold D, Roggenbuck D, Sturm A. Identification of pancreatic glycoprotein 2 as an endogenous immunomodulator of innate and adaptive immune responses. J Immunol 2012; 189:2774-83. [PMID: 22891285 DOI: 10.4049/jimmunol.1103190] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Pancreatic autoantibodies are Crohn disease-specific serologic markers. The function and immunological role of their recently identified autoantigen, glycoprotein 2 (GP2), are unknown. We therefore investigated the impact of GP2 on modulation of innate and adaptive immune responses to evaluate its potential therapeutic use in mucosal inflammation. Our data indicate a previously unknown function for GP2 as an immunomodulator. GP2 was ubiquitously expressed on cells vital to mucosal immune responses. The expression of GP2 was upregulated on activated human T cells, and it was further influenced by pharmaceutical TNF-α inhibitors. Recombinant GP2 significantly decreased human intestinal epithelial cells, mucosal and peripheral T cell proliferation, apoptosis, and activation, and it distinctly modulated cytokine secretion. Furthermore, intestinal epithelial cells stimulated with GP2 potently attracted T cells. In conclusion, we demonstrate a novel role for GP2 in immune regulation that could provide a platform for new therapeutic interventions in the treatment of Crohn disease.
Collapse
Affiliation(s)
- Lael Werner
- Division of Hepatology and Gastroenterology, Department of Medicine, Charité-Campus Virchow Clinic, Medical University of Berlin, 13353 Berlin, Germany
| | | | | | | | | | | |
Collapse
|
10
|
Werner L, Berndt U, Paclik D, Danese S, Schirbel A, Sturm A. TNFα inhibitors restrict T cell activation and cycling via Notch-1 signalling in inflammatory bowel disease. Gut 2012; 61:1016-27. [PMID: 22068169 DOI: 10.1136/gutjnl-2011-301267] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
BACKGROUND Tumour necrosis factor α (TNFα) inhibitors such as adalimumab and infliximab are frequently prescribed for inflammatory bowel disease (IBD). Despite the clinical success of TNFα inhibitors, their physiological mode of action is not fully understood. The aim of this study was to investigate the mode of action of anti-TNFα agents in IBD. METHODS It was hypothesised that Notch mediates anti-TNFα action in T cells. A study was carried out to identify Notch-1 as a link by which anti-TNFα antibodies mediate their inhibitory functions. RESULTS TNFα inhibitors induced T cell apoptosis, inhibited activation, reduced cytokine secretion and restricted cell cycling. TNFα blockade at several levels showed that TNFα is responsible for inducing apoptosis by anti-TNFα but not for cell cycle restriction. By linking Notch and TNFα it was shown that (1) Notch-1 mucosal expression differs in inflamed and non-inflamed mucosa and increases in response to anti-TNFα treatment; (2) Notch-1 function is regulated by TNFα inhibitors; (3) Notch-1 binds to TNFα; and (4) Notch-1 inhibition prevents anti-TNFα-induced T cell cycle arrest but not apoptosis. CONCLUSIONS TNFα inhibitors potently inhibit T cell function. By demonstrating for the first time that Notch-1 mediates the inhibitory effects of adalimumab and infliximab on T cell cycling, this study reveals a new mode of action and also an underlying signalling pathway by which biological agents act in IBD.
Collapse
Affiliation(s)
- Lael Werner
- Department of Medicine, Division of Gastroenterology and Hepatology, Charité Campus Virchow Clinic, Universitätsmedizin Berlin, Berlin, Germany
| | | | | | | | | | | |
Collapse
|
11
|
Paclik D, Werner L, Guckelberger O, Wiedenmann B, Sturm A. Galectins distinctively regulate central monocyte and macrophage function. Cell Immunol 2011; 271:97-103. [PMID: 21724180 DOI: 10.1016/j.cellimm.2011.06.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Revised: 05/27/2011] [Accepted: 06/08/2011] [Indexed: 12/11/2022]
Abstract
Monocytes and macrophages link the innate and adaptive immune systems and protect the host from the outside world. In inflammatory disorders their activation leads to tissue damage. Galectins have emerged as central regulators of the immune system. However, if they regulate monocyte/macrophage physiology is still unknown. Binding of Gal-1, Gal-2, Gal-3 and Gal-4 to monocytes/macrophages, activation, cytokine secretion and apoptosis were determined by FACS, migration by Transwell system and phagocytosis by phagotest. Supernatants from macrophages co-cultured with galectins revealed their influence on T-cell function. In our study Gal-1, Gal-2, Gal-4, and partly Gal-3 bound to monocytes/macrophages. Galectins prevented Salmonella-induced MHCII upregulation. Cytokine release was distinctly induced by different galectins. T-cell activation was significantly restricted by supernatants of macrophages co-cultured in the presence of Gal-2 or Gal-4. Furthermore, all galectins tested significantly inhibited monocyte migration. Finally, we showed for the first time that galectins induce potently monocyte, but not macrophage apoptosis. Our study provides evidence that galectins distinctively modulate central monocyte/macrophage function. By inhibiting T-cell function via macrophage priming, we show that galectins link the innate and adaptive immune systems and provide new insights into the action of sugar-binding proteins.
Collapse
Affiliation(s)
- Daniela Paclik
- Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum, Charité - Universitätsmedizin Berlin, Germany.
| | | | | | | | | |
Collapse
|
12
|
Paclik D, Lohse K, Wiedenmann B, Dignass AU, Sturm A. Galectin-2 and -4, but not galectin-1, promote intestinal epithelial wound healing in vitro through a TGF-beta-independent mechanism. Inflamm Bowel Dis 2008; 14:1366-72. [PMID: 18484670 DOI: 10.1002/ibd.20499] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Inflammatory bowel diseases (IBDs) are characterized by various degrees of mucosal surface damage and subsequent impairment of the intestinal barrier function. Resealing of the epithelial barrier requires intestinal cell migration and proliferation. Galectins are increasingly recognized as novel regulators of inflammation. Thus, we aimed to explore the effect of galectin-2 (Gal-2) and Gal-4 on epithelial cell function and wound healing. METHODS Binding of Gal-2 and Gal-4 was determined by flow cytometric analysis and binding sites by SDS-PAGE electrophoresis. Cell migration by Gal-1, -2, and -4 was determined by a wound-healing assay. Cell cycle analysis and detection of apoptosis were determined by flow cytometric analysis. RESULTS Gal-2 and Gal-4 bind to epithelial cells at the E-cadherin/beta-catenin complex. Both galectins significantly enhanced intestinal epithelial cell restitution in vitro. This enhancement of epithelial cell restitution was TGF-beta-independent. In contrast, Gal-1 decreased epithelial cell migration TGF-beta dependently. By performing cell cycle analysis, we show that Gal-2 and Gal-4 increased cyclin B1 expression and consequently cell cycle progression, while Gal-1 inhibited cell cycling. Determining the influence of Gal-2 and Gal-4 on epithelial cell apoptosis, we showed no induction of apoptosis, whereas Gal-1 significantly induced apoptosis of epithelial cells caspase-independently. CONCLUSIONS Gal-2 and Gal-4 bind to intestinal epithelial cells and promote their restitution. Thus, our study provides for the first time evidence that these galectins play a significant role in intestinal wound-healing processes and might exert beneficial effects in diseases characterized by epithelial barrier disruption like IBDs.
Collapse
Affiliation(s)
- Daniela Paclik
- Medizinische Klinik m.S. Hepatologie and Gastroenterologie, Campus Virchow-Klinikum, Charité, Universitätsmedizin Berlin, Berlin, Germany
| | | | | | | | | |
Collapse
|
13
|
Paclik D, Danese S, Berndt U, Wiedenmann B, Dignass A, Sturm A. Galectin-4 controls intestinal inflammation by selective regulation of peripheral and mucosal T cell apoptosis and cell cycle. PLoS One 2008; 3:e2629. [PMID: 18612433 PMCID: PMC2440804 DOI: 10.1371/journal.pone.0002629] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [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: 09/26/2007] [Accepted: 06/05/2008] [Indexed: 02/06/2023] Open
Abstract
Galectin-4 is a carbohydrate-binding protein belonging to the galectin family. Here we provide novel evidence that galectin-4 is selectively expressed and secreted by intestinal epithelial cells and binds potently to activated peripheral and mucosal lamina propria T-cells at the CD3 epitope. The carbohydrate-dependent binding of galectin-4 at the CD3 epitope is fully functional and inhibited T cell activation, cycling and expansion. Galectin-4 induced apoptosis of activated peripheral and mucosal lamina propria T cells via calpain-, but not caspase-dependent, pathways. Providing further evidence for its important role in regulating T cell function, galectin-4 blockade by antisense oligonucleotides reduced TNF-alpha inhibitor induced T cell death. Furthermore, in T cells, galectin-4 reduced pro-inflammatory cytokine secretion including IL-17. In a model of experimental colitis, galectin-4 ameliorated mucosal inflammation, induced apoptosis of mucosal T-cells and decreased the secretion of pro-inflammatory cytokines. Our results show that galectin-4 plays a unique role in the intestine and assign a novel role of this protein in controlling intestinal inflammation by a selective induction of T cell apoptosis and cell cycle restriction. Conclusively, after defining its biological role, we propose Galectin-4 is a novel anti-inflammatory agent that could be therapeutically effective in diseases with a disturbed T cell expansion and apoptosis such as inflammatory bowel disease.
Collapse
Affiliation(s)
- Daniela Paclik
- Medizinische Klinik m.S. Hepatologie und Gastroenterologie, Campus Virchow Klinikum, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Silvio Danese
- Division of Gastroenterology, Istituto Clinico Humanitas-IRCCS, Milan, Italy
| | - Uta Berndt
- Medizinische Klinik m.S. Hepatologie und Gastroenterologie, Campus Virchow Klinikum, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Bertram Wiedenmann
- Medizinische Klinik m.S. Hepatologie und Gastroenterologie, Campus Virchow Klinikum, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Axel Dignass
- Medizinische Klinik I, Markus Krankenhaus, Frankfurt, Germany
| | - Andreas Sturm
- Medizinische Klinik m.S. Hepatologie und Gastroenterologie, Campus Virchow Klinikum, Charité-Universitätsmedizin Berlin, Berlin, Germany
| |
Collapse
|
14
|
Guzy C, Paclik D, Schirbel A, Sonnenborn U, Wiedenmann B, Sturm A. The probiotic Escherichia coli strain Nissle 1917 induces gammadelta T cell apoptosis via caspase- and FasL-dependent pathways. Int Immunol 2008; 20:829-40. [PMID: 18448456 DOI: 10.1093/intimm/dxn041] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Human gammadelta T cells play a vital role in the innate and adaptive immune response to microbial antigens by acting as antigen-presenting cells while at the same time being capable of directly activating CD4(+) T cells. Pathogenic microbes or loss of tolerance toward the host's own microflora trigger many diseases including inflammatory bowel diseases. We previously demonstrated that Escherichia coli Nissle 1917 directly interacts with the adaptive immune system by regulating central T cell functions. Here we aimed to investigate whether E. coli Nissle regulates gammadelta T cell function, thereby linking the innate and adaptive immune system. In our study, we demonstrate that, in contrast to the other probiotic strains tested, E. coli Nissle increased activation, cell cycling and expansion of gammadelta, but not alphabeta T cells. In gammadelta T cells, E. coli Nissle reduced tumor necrosis factor-alpha secretion but increased IL-6 and CXCL8 release. However, after activation, only E. coli Nissle induced gammadelta T cell apoptosis, mediated via Toll-like receptor-2 by caspase- and FasLigand-dependent pathways. gammadelta T cells play an important role in the recognition of microbial antigens and the perpetuation of inflammatory processes. The demonstration that E. coli Nissle, but not the other bacteria tested, profoundly regulate gammadelta T cell function contributes to explaining the biological function of this probiotic strain in inflammatory diseases and provides us with a better understanding of the role of gammadelta T cells.
Collapse
Affiliation(s)
- Claudia Guzy
- Department of Medicine, Division of Gastroenterology and Hepatology, Charité-Universitätsmedizin Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | | | | | | | | | | |
Collapse
|
15
|
Paclik D, Berndt U, Guzy C, Dankof A, Danese S, Holzloehner P, Rosewicz S, Wiedenmann B, Wittig BM, Dignass AU, Sturm A. Galectin-2 induces apoptosis of lamina propria T lymphocytes and ameliorates acute and chronic experimental colitis in mice. J Mol Med (Berl) 2007; 86:1395-406. [PMID: 18064431 DOI: 10.1007/s00109-007-0290-2] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Revised: 11/12/2007] [Accepted: 11/14/2007] [Indexed: 12/13/2022]
Abstract
Galectins have recently emerged as central regulators of the immune system. We have previously demonstrated that carbohydrate-dependent binding of galectin-2 induces apoptosis in activated T cells. Here, we investigate the potential therapeutic effect of galectin-2 in experimental colitis. Galectin-2 expression and its binding profile were determined by immunohistochemistry. Acute and chronic colitis was induced by dextran sodium sulfate administration and in a T-cell transfer colitis model. Apoptosis was assessed by TdT-mediated dUTP-biotin nick-end labeling, and cytokine secretion was determined by cytometric bead array. We show that galectin-2 was constitutively expressed mainly in the epithelial compartment of the mouse intestine and bind to lamina propria mononuclear cells. During colitis, galectin-2 expression was reduced, but could be restored to normal levels by immunosuppressive treatment. Galectin-2 treatment induced apoptosis of mucosal T cells and thus ameliorated acute and chronic dextran-sodium-sulfate-induced colitis and in a T-helper-cell 1-driven model of antigen-specific transfer colitis. Furthermore, the pro-inflammatory cytokine release was inhibited by galectin-2 treatment. In preliminary toxicity studies, galectin-2 was well tolerated. Our study provides evidence that galectin-2 induces apoptosis in vivo and ameliorates acute and chronic murine colitis. Furthermore, galectin-2 has no significant toxicity over a broad dose range, suggesting that it may serve as a new therapeutic agent in the treatment of inflammatory bowel disease.
Collapse
Affiliation(s)
- Daniela Paclik
- Medizinische Klinik m.S. Hepatologie und Gastroenterologie, Campus Virchow Klinikum, Charité-Universitätsmedizin, Berlin, Germany
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Grabig A, Paclik D, Guzy C, Dankof A, Baumgart DC, Erckenbrecht J, Raupach B, Sonnenborn U, Eckert J, Schumann RR, Wiedenmann B, Dignass AU, Sturm A. Escherichia coli strain Nissle 1917 ameliorates experimental colitis via toll-like receptor 2- and toll-like receptor 4-dependent pathways. Infect Immun 2006; 74:4075-82. [PMID: 16790781 PMCID: PMC1489743 DOI: 10.1128/iai.01449-05] [Citation(s) in RCA: 130] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Toll-like receptors (TLRs) are key components of the innate immune system that trigger antimicrobial host defense responses. The aim of the present study was to analyze the effects of probiotic Escherichia coli Nissle strain 1917 in experimental colitis induced in TLR-2 and TLR-4 knockout mice. Colitis was induced in wild-type (wt), TLR-2 knockout, and TLR-4 knockout mice via administration of 5% dextran sodium sulfate (DSS). Mice were treated with either 0.9% NaCl or 10(7) E. coli Nissle 1917 twice daily, followed by the determination of disease activity, mucosal damage, and cytokine secretion. wt and TLR-2 knockout mice exposed to DSS developed acute colitis, whereas TLR-4 knockout mice developed significantly less inflammation. In wt mice, but not TLR-2 or TLR-4 knockout mice, E. coli Nissle 1917 ameliorated colitis and decreased proinflammatory cytokine secretion. In TLR-2 knockout mice a selective reduction of gamma interferon secretion was observed after E. coli Nissle 1917 treatment. In TLR-4 knockout mice, cytokine secretion was almost undetectable and not modulated by E. coli Nissle 1917, indicating that TLR-4 knockout mice do not develop colitis similar to the wt mice. Coculture of E. coli Nissle 1917 and human T cells increased TLR-2 and TLR-4 protein expression in T cells and increased NF-kappaB activity via TLR-2 and TLR-4. In conclusion, our data provide evidence that E. coli Nissle 1917 ameliorates experimental induced colitis in mice via TLR-2- and TLR-4-dependent pathways.
Collapse
Affiliation(s)
- A Grabig
- Charité-Universitätsmedizin Berlin, Campus Virchow Clinic, Department of Hepatology and Gastroenterology, Augustenburger Platz 1, D-13353 Berlin, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Valassis G, Pragst I, Adolfs C, Paclik D, Wiens F, Vogel-Wiens C, Milz S, Gonschior P. Local photodynamic therapy reduces tissue hyperplasia after stenting in an experimental restenosis model. Basic Res Cardiol 2002; 97:132-6. [PMID: 12002260 DOI: 10.1007/s003950200003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Local photodynamic therapy was used to prevent neointimal hyperplasia after stenting. Slotted tube stents were placed with 16 atmospheres in porcine femoral arteries with the external diameter to match the diameter at 10 atmospheres. Animals were randomly allocated to Group 1 (stenting only); or Group 2 with stenting, local drug delivery of a photosensitizer (5 mg Photofrin) and subsequent exposure to light (photodynamic therapy, 100 J). Fourteen days later, all vessels were excised, fixed and processed for histology. Tissue hyperplasia was observed after stenting in vessels from Group 1. In Group 2 with photodynamic therapy, the myoproliferative response was significantly reduced. Tissue hyperplasia after stenting was effectively suppressed by photodynamic therapy.
Collapse
|