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Stolzer I, Kaden-Volynets V, Ruder B, Letizia M, Bittel M, Rausch P, Basic M, Bleich A, Baines JF, Neurath MF, Wirtz S, Weidinger C, Bischoff SC, Becker C, Günther C. Environmental Microbial Factors Determine the Pattern of Inflammatory Lesions in a Murine Model of Crohn's Disease-Like Inflammation. Inflamm Bowel Dis 2020; 26:66-79. [PMID: 31276162 DOI: 10.1093/ibd/izz142] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Indexed: 12/19/2022]
Abstract
Crohn's disease (CD) patients can be grouped into patients suffering from ileitis, ileocolitis, jejunoileitis, and colitis. The pathophysiological mechanism underlying this regional inflammation is still unknown. Although most murine models of inflammatory bowel disease (IBD) develop inflammation in the colon, there is an unmet need for novel models that recapitulate the spontaneous and fluctuating nature of inflammation as seen in CD. Recently, mice with an intestinal epithelial cell-specific deletion for Caspase-8 (Casp8ΔIEC mice), which are characterized by cell death-driven ileitis and disrupted Paneth cell homeostasis, have been identified as a novel model of CD-like ileitis. Here we uncovered that genetic susceptibility alone is sufficient to drive ileitis in Casp8ΔIEC mice. In sharp contrast, environmental factors, such as a disease-relevant microbial flora, determine colonic inflammation. Accordingly, depending on the microbial environment, isogenic Casp8ΔIEC mice either exclusively developed ileitis or suffered from pathologies in several parts of the gastrointestinal tract. Colitis in these mice was characterized by massive epithelial cell death, leading to spread of commensal gut microbes to the extra-intestinal space and hence an aberrant activation of the systemic immunity. We further uncovered that Casp8ΔIEC mice show qualitative and quantitative changes in the intestinal microbiome associated with an altered mucosal and systemic immune response. In summary, we identified that inflammation in this murine model of CD-like inflammation is characterized by an immune reaction, presumably directed against a disease-relevant microbiota in a genetically susceptible host, with impaired mucosal barrier function and bacterial clearance at the epithelial interface.
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Affiliation(s)
- Iris Stolzer
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | | | - Barbara Ruder
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Marilena Letizia
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Berlin, Germany
| | - Miriam Bittel
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Philipp Rausch
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, Plön, Germany.,Institute for Experimental Medicine, Evolutionary Genomics, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Marijana Basic
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - André Bleich
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - John F Baines
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, Plön, Germany.,Institute for Experimental Medicine, Evolutionary Genomics, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Markus F Neurath
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Carl Weidinger
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Berlin, Germany
| | - Stephan C Bischoff
- Department of Nutritional Medicine, University of Hohenheim, Stuttgart, Germany
| | - Christoph Becker
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Claudia Günther
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
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53
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Omata Y, Frech M, Primbs T, Lucas S, Andreev D, Scholtysek C, Sarter K, Kindermann M, Yeremenko N, Baeten DL, Andreas N, Kamradt T, Bozec A, Ramming A, Krönke G, Wirtz S, Schett G, Zaiss MM. Group 2 Innate Lymphoid Cells Attenuate Inflammatory Arthritis and Protect from Bone Destruction in Mice. Cell Rep 2019; 24:169-180. [PMID: 29972778 DOI: 10.1016/j.celrep.2018.06.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [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: 08/15/2017] [Revised: 05/03/2018] [Accepted: 06/01/2018] [Indexed: 12/12/2022] Open
Abstract
Group 2 innate lymphoid cells (ILC2s) were detected in the peripheral blood and the joints of rheumatoid arthritis (RA) patients, serum-induced arthritis (SIA), and collagen-induced arthritis (CIA) using flow cytometry. Circulating ILC2s were significantly increased in RA patients compared with healthy controls and inversely correlated with disease activity. Induction of arthritis in mice led to a fast increase in ILC2 number. To elucidate the role of ILC2 in arthritis, loss- and gain-of-function mouse models for ILC2 were subjected to arthritis. Reduction of ILC2 numbers in RORαcre/GATA3fl/fl and Tie2cre/RORαfl/fl mice significantly exacerbated arthritis. Increasing ILC2 numbers in mice by IL-25/IL-33 mini-circles or IL-2/IL-2 antibody complex and the adoptive transfer of wild-type (WT) ILC2s significantly attenuated arthritis by affecting the initiation phase. In addition, adoptive transfer of IL-4/13-competent WT but not IL-4/13-/- ILC2s and decreased cytokine secretion by macrophages. These data show that ILC2s have immune-regulatory functions in arthritis.
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Affiliation(s)
- Yasunori Omata
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Michael Frech
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Tatjana Primbs
- Department of Internal Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Sébastien Lucas
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Darja Andreev
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Carina Scholtysek
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Kerstin Sarter
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Markus Kindermann
- Department of Internal Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Nataliya Yeremenko
- Department of Clinical Immunology and Rheumatology and Department of Experimental Immunology, Academic Medical Center/University of Amsterdam, Amsterdam, the Netherlands
| | - Dominique L Baeten
- Department of Clinical Immunology and Rheumatology and Department of Experimental Immunology, Academic Medical Center/University of Amsterdam, Amsterdam, the Netherlands
| | - Nico Andreas
- Institute of Immunology, Jena University Hospital, Leutragraben 3, 07743 Jena, Germany
| | - Thomas Kamradt
- Institute of Immunology, Jena University Hospital, Leutragraben 3, 07743 Jena, Germany
| | - Aline Bozec
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Andreas Ramming
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Gerhard Krönke
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Stefan Wirtz
- Department of Internal Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Georg Schett
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Mario M Zaiss
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany.
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Reifferscheid F, Harding U, Wirtz S. [Emergency physician training-survey of course participants regarding training conditions and motivation]. Med Klin Intensivmed Notfmed 2019; 116:36-40. [PMID: 31732760 DOI: 10.1007/s00063-019-00624-8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 09/10/2019] [Accepted: 09/24/2019] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Qualification is the basis to prevent a shortage of emergency medicine service (EMS) physicians. To find out more about the motivation and training conditions young doctors attending EMS medicine courses were questioned. MATERIALS AND METHODS 33 planned courses were identified and participants from 19 courses were asked to fill out the questionnaires. The questionnaires contained 22 questions on person, motivation, support by the employer and individual aims of course attendance. RESULTS 2,050 questionnaires were distributed, 970 (47.3%) were returned. Participants were 31.8 ± 5.2 years old (mean) and attended the course after 3.7 ± 4.3 years of clinical experience. 907 were in specialist training (237 surgery, 320 internal medicine, 269 anaesthesia). 751 participants planned to work as emergency physician in the future (196 possibly), 213 in urgent care centres. For 309 participants attendance was an employer requirement. Attendance was on educational leave (489), paid leave (258), annual leave (112) or free time (85). The course was fully (493) or partially (177) paid by the employer. Accommodation was paid for by physicians (525) or employers (287). Practical training on the ambulance was planned in free time or during annual leave (582), on paid leave (204) or during regular shifts (119). 682 participants hoped to gain more safety with in-hospital emergencies, 560 planned shifts on the ambulance of the own hospital and 511 planned to work on a free-lance basis. 388 physicians planned to use the services of an agency for free-lance work. CONCLUSION While employers supported course attendance in more than 50%, the majority of the participants had to organise the practical training on the ambulance during free time. Only 58% planned to work on the ambulance as part of their regular job or 53% on a free-lance basis. Other participants attended in preparation for work in urgent-care or to gain competence in handling in-hospital emergencies.
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Affiliation(s)
- F Reifferscheid
- Klinik für Anästhesiologie und Operative Intensivmedizin, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, Haus 12, 24105, Kiel, Deutschland. .,Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte (AGNN) e. V., Lübeck, Deutschland.
| | - U Harding
- Zentrale Notfallaufnahme, Klinikum Wolfsburg, Sauerbruchstr. 7, 38440, Wolfsburg, Deutschland.,Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte (AGNN) e. V., Lübeck, Deutschland
| | - S Wirtz
- Abteilung für Anästhesiologie, Intensiv- und Notfallmedizin, Schmerztherapie, Asklepios Klinik Barmbek, Rübenkamp 220, 22307, Hamburg, Deutschland.,Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte (AGNN) e. V., Lübeck, Deutschland
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López-Posadas R, Fastancz P, Martínez-Sánchez LDC, Panteleev-Ivlev J, Thonn V, Kisseleva T, Becker LS, Schulz-Kuhnt A, Zundler S, Wirtz S, Atreya R, Carlé B, Friedrich O, Schürmann S, Waldner MJ, Neufert C, Brakebusch CH, Bergö MO, Neurath MF, Atreya I. Inhibiting PGGT1B Disrupts Function of RHOA, Resulting in T-cell Expression of Integrin α4β7 and Development of Colitis in Mice. Gastroenterology 2019; 157:1293-1309. [PMID: 31302143 DOI: 10.1053/j.gastro.2019.07.007] [Citation(s) in RCA: 15] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 07/01/2019] [Accepted: 07/07/2019] [Indexed: 01/07/2023]
Abstract
BACKGROUND & AIMS It is not clear how regulation of T-cell function is altered during development of inflammatory bowel diseases (IBD). We studied the mechanisms by which geranylgeranyltransferase-mediated prenylation controls T-cell localization to the intestine and chronic inflammation. METHODS We generated mice with T-cell-specific disruption of the geranylgeranyltransferase type I, beta subunit gene (Pggt1b), called Pggt1bΔCD4 mice, or the ras homolog family member A gene (Rhoa), called RhoaΔCD4 mice. We also studied mice with knockout of CDC42 or RAC1 and wild-type mice (controls). Intestinal tissues were analyzed by histology, multiphoton and confocal microscopy, and real-time polymerase chain reaction. Activation of CDC42, RAC1, and RHOA were measured with G-LISA, cell fractionation, and immunoblots. T cells and lamina propria mononuclear cells from mice were analyzed by flow cytometry or transferred to Rag1-/- mice. Mice were given injections of antibodies against integrin alpha4beta7 or gavaged with the RORC antagonist GSK805. We obtained peripheral blood and intestinal tissue samples from patients with and without IBD and analyzed them by flow cytometry. RESULTS Pggt1bΔCD4 mice developed spontaneous colitis, characterized by thickening of the intestinal wall, edema, fibrosis, accumulation of T cells in the colon, and increased expression of inflammatory cytokines. Compared with control CD4+ T cells, PGGT1B-deficient CD4+ T cells expressed significantly higher levels of integrin alpha4beta7, which regulates their localization to the intestine. Inflammation induced by transfer of PGGT1B-deficient CD4+ T cells to Rag1-/- mice was blocked by injection of an antibody against integrin alpha4beta7. Lamina propria of Pggt1bΔCD4 mice had increased numbers of CD4+ T cells that expressed RORC and higher levels of cytokines produced by T-helper 17 cells (granulocyte-macrophage colony-stimulating factor, interleukin [IL]17A, IL17F, IL22, and tumor necrosis factor [TNF]). The RORC inverse agonist GSK805, but not antibodies against IL17A or IL17F, prevented colitis in Pggt1bΔCD4 mice. PGGT1B-deficient CD4+ T cells had decreased activation of RHOA. RhoAΔCD4 mice had a similar phenotype to Pggt1bΔCD4 mice, including development of colitis, increased numbers of CD4+ T cells in colon, increased expression of integrin alpha4beta7 by CD4+ T cells, and increased levels of IL17A and other inflammatory cytokines in lamina propria. T cells isolated from intestinal tissues from patients with IBD had significantly lower levels of PGGT1B than tissues from individuals without IBD. CONCLUSION Loss of PGGT1B from T cells in mice impairs RHOA function, increasing CD4+ T-cell expression of integrin alpha4beta7 and localization to colon, resulting in increased expression of inflammatory cytokines and colitis. T cells isolated from gut tissues from patients with IBD have lower levels of PGGT1B than tissues from patients without IBD.
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Affiliation(s)
- Rocío López-Posadas
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany.
| | - Petra Fastancz
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | | | - Julia Panteleev-Ivlev
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Veronika Thonn
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Tatyana Kisseleva
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Lukas S Becker
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Anja Schulz-Kuhnt
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Sebastian Zundler
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Raja Atreya
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Birgitta Carlé
- Department of Chemical and Biological Engineering, Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Oliver Friedrich
- Department of Chemical and Biological Engineering, Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Sebastian Schürmann
- Department of Chemical and Biological Engineering, Institute of Medical Biotechnology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Maximilian J Waldner
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Clemens Neufert
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Cord H Brakebusch
- Biotec Research and Innovation Center, University of Copenhagen, Copenhagen, Denmark
| | - Martin O Bergö
- Sahlgrenska Cancer Center, University of Gothenburg, Gothenburg, Sweden
| | - Markus F Neurath
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Imke Atreya
- Department of Medicine 1, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
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Günther C, Ruder B, Stolzer I, Dorner H, He GW, Chiriac MT, Aden K, Strigli A, Bittel M, Zeissig S, Rosenstiel P, Atreya R, Neurath MF, Wirtz S, Becker C. Interferon Lambda Promotes Paneth Cell Death Via STAT1 Signaling in Mice and Is Increased in Inflamed Ileal Tissues of Patients With Crohn's Disease. Gastroenterology 2019; 157:1310-1322.e13. [PMID: 31352002 DOI: 10.1053/j.gastro.2019.07.031] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 07/05/2019] [Accepted: 07/22/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND & AIMS Interferon lambda (IFNL) is expressed at high levels by intestinal epithelial cells (IECs) and mucosal immune cells in response to infection and inflammation. We investigated whether IFNL might contribute to pathogenesis of Crohn's disease (CD). METHODS We obtained serum samples and terminal ileum biopsies from 47 patients with CD and 16 healthy individuals (controls). We measured levels of IFNL by enzyme-linked immunosorbent assay and immunohistochemistry and location of expression by confocal microscopy. Activation of IFNL signaling via STAT1 was measured in areas of no, mild, moderate, and severe inflammation and correlated with Paneth cell homeostasis and inflammation. IFNL expression and function were studied in wild-type mice and mice with intestinal epithelial cell-specific (ΔIEC) disruption or full-body disruption of specific genes (Mlkl-/-, Stat1ΔIEC, Casp8ΔIEC, Casp8ΔIECRipk3-/-, Casp8ΔIECTnfr-/-, Casp8ΔIECMlkl-/-, and Nod2-/- mice). Some mice were given tail vein injections of a vector encoding a secreted form of IFNL. Intestinal tissues were collected from mice and analyzed by immunohistochemistry and immunoblots. We generated 3-dimensional small intestinal organoids from mice and studied the effects of IFNL and inhibitors of STAT-signaling pathway. RESULTS Patients with CD had significant increases in serum and ileal levels of IFNL compared with controls. Levels of IFNL were highest in ileum tissues with severe inflammation. High levels of IFNL associated with a reduced number of Paneth cells and increased cell death at the crypt bottom in inflamed ileum samples. Intestinal tissues from the ileum of wild-type mice injected with a vector expressing IFNL had reduced numbers of Paneth cells. IFNL-induced death of Paneth cells in mice did not occur via apoptosis, but required Mixed Lineage Kinase Domain Like (MLKL) and activation of Signal transducer and activator of transcription 1 (STAT1). In organoids, inhibitors of Janus kinase (JAK) signaling via STAT1 (glucocorticoids, tofacitinib, or filgotinib) reduced expression of proteins that mediate cell death and prevented Paneth cell death. CONCLUSIONS Levels of IFNL are increased in serum and inflamed ileal tissues from patients with CD and associated with a loss of Paneth cells. Expression of a secreted form of IFNL in mice results in loss of Paneth cells from intestinal tissues, via STAT1 and MLKL, controlled by caspase 8. Strategies to reduce IFNL or block its effects might be developed for treatment of patients with CD affecting the terminal ileum.
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Affiliation(s)
- Claudia Günther
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany.
| | - Barbara Ruder
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany
| | - Iris Stolzer
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany
| | - Heidrun Dorner
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany
| | - Gui-Wei He
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany
| | - Mircea Teodor Chiriac
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany
| | - Konrad Aden
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Anne Strigli
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität (TU) Dresden, Dresden, Germany; Department of Medicine I, Universitätsklinikum Carl Gustav Carus Dresden, Technische Universität (TU) Dresden, Dresden, Germany
| | - Miriam Bittel
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany
| | - Sebastian Zeissig
- Center for Regenerative Therapies Dresden (CRTD), Technische Universität (TU) Dresden, Dresden, Germany; Department of Medicine I, Universitätsklinikum Carl Gustav Carus Dresden, Technische Universität (TU) Dresden, Dresden, Germany
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Raja Atreya
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany
| | - Markus F Neurath
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany
| | - Stefan Wirtz
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany
| | - Christoph Becker
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, Friedrich-Alexander-University, Erlangen, Germany.
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Gößwein S, Lindemann A, Mahajan A, Maueröder C, Martini E, Patankar J, Schett G, Becker C, Wirtz S, Naumann-Bartsch N, Bianchi ME, Greer PA, Lochnit G, Herrmann M, Neurath MF, Leppkes M. Citrullination Licenses Calpain to Decondense Nuclei in Neutrophil Extracellular Trap Formation. Front Immunol 2019; 10:2481. [PMID: 31695698 PMCID: PMC6817590 DOI: 10.3389/fimmu.2019.02481] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 10/04/2019] [Indexed: 12/23/2022] Open
Abstract
Neutrophils respond to various stimuli by decondensing and releasing nuclear chromatin characterized by citrullinated histones as neutrophil extracellular traps (NETs). This achieves pathogen immobilization or initiation of thrombosis, yet the molecular mechanisms of NET formation remain elusive. Peptidyl arginine deiminase-4 (PAD4) achieves protein citrullination and has been intricately linked to NET formation. Here we show that citrullination represents a major regulator of proteolysis in the course of NET formation. Elevated cytosolic calcium levels trigger both peptidylarginine deiminase-4 (PAD4) and calpain activity in neutrophils resulting in nuclear decondensation typical of NETs. Interestingly, PAD4 relies on proteolysis by calpain to achieve efficient nuclear lamina breakdown and chromatin decondensation. Pharmacological or genetic inhibition of PAD4 and calpain strongly inhibit chromatin decondensation of human and murine neutrophils in response to calcium ionophores as well as the proteolysis of nuclear proteins like lamin B1 and high mobility group box protein 1 (HMGB1). Taken together, the concerted action of PAD4 and calpain induces nuclear decondensation in the course of calcium-mediated NET formation.
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Affiliation(s)
- Stefanie Gößwein
- Department of Medicine 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Deutsches Zentrum Immuntherapie, Kussmaul Campus for Medical Research and Translational Research Center, Erlangen, Germany
| | - Aylin Lindemann
- Department of Medicine 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Deutsches Zentrum Immuntherapie, Kussmaul Campus for Medical Research and Translational Research Center, Erlangen, Germany
| | - Aparna Mahajan
- Department of Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Christian Maueröder
- Department of Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Eva Martini
- Department of Medicine 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Deutsches Zentrum Immuntherapie, Kussmaul Campus for Medical Research and Translational Research Center, Erlangen, Germany
| | - Jay Patankar
- Department of Medicine 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Deutsches Zentrum Immuntherapie, Kussmaul Campus for Medical Research and Translational Research Center, Erlangen, Germany
| | - Georg Schett
- Department of Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Christoph Becker
- Department of Medicine 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Deutsches Zentrum Immuntherapie, Kussmaul Campus for Medical Research and Translational Research Center, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Deutsches Zentrum Immuntherapie, Kussmaul Campus for Medical Research and Translational Research Center, Erlangen, Germany
| | - Nora Naumann-Bartsch
- Department of Pediatrics, Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Marco E Bianchi
- Chromatin Dynamics Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Peter A Greer
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - Günter Lochnit
- Institute of Biochemistry, Justus-Liebig-Universität Gießen, Giessen, Germany
| | - Martin Herrmann
- Department of Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Markus F Neurath
- Department of Medicine 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Deutsches Zentrum Immuntherapie, Kussmaul Campus for Medical Research and Translational Research Center, Erlangen, Germany
| | - Moritz Leppkes
- Department of Medicine 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Deutsches Zentrum Immuntherapie, Kussmaul Campus for Medical Research and Translational Research Center, Erlangen, Germany
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Knipfer L, Schulz-Kuhnt A, Kindermann M, Greif V, Symowski C, Voehringer D, Neurath MF, Atreya I, Wirtz S. A CCL1/CCR8-dependent feed-forward mechanism drives ILC2 functions in type 2-mediated inflammation. J Exp Med 2019; 216:2763-2777. [PMID: 31537642 PMCID: PMC6888976 DOI: 10.1084/jem.20182111] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 06/17/2019] [Accepted: 09/03/2019] [Indexed: 01/03/2023] Open
Abstract
Group 2 innate lymphoid cells (ILC2s) possess indispensable roles during type 2-mediated inflammatory diseases. Although their physiological and detrimental immune functions seem to depend on the anatomical compartment they reside, their tissue tropism and the molecular and immunological processes regulating the self-renewal of the local pool of ILC2s in the context of inflammation or infection are incompletely understood. Here, we analyzed the role of the CC-chemokine receptor CCR8 for the biological functions of ILC2s. In vitro and in vivo experiments indicated that CCR8 is in comparison to the related molecule CCR4 less important for migration of these cells. However, we found that activated mouse and human ILC2s produce the CCR8 ligand CCL1 and are a major source of CCL1 in vivo. CCL1 signaling to ILC2s regulates their proliferation and supports their capacity to protect against helminthic infections. In summary, we identify a novel chemokine receptor-dependent mechanism by which ILC2s are regulated during type 2 responses.
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Affiliation(s)
- Lisa Knipfer
- Department of Medicine 1, University Hospital Center, Friedrich-Alexander University, Erlangen-Nuremberg, Germany
| | - Anja Schulz-Kuhnt
- Department of Medicine 1, University Hospital Center, Friedrich-Alexander University, Erlangen-Nuremberg, Germany
| | - Markus Kindermann
- Department of Medicine 1, University Hospital Center, Friedrich-Alexander University, Erlangen-Nuremberg, Germany
| | - Vicky Greif
- Department of Medicine 1, University Hospital Center, Friedrich-Alexander University, Erlangen-Nuremberg, Germany
| | - Cornelia Symowski
- Department of Infection Biology, University Hospital Center, Friedrich-Alexander University, Erlangen-Nuremberg, Germany
| | - David Voehringer
- Department of Infection Biology, University Hospital Center, Friedrich-Alexander University, Erlangen-Nuremberg, Germany
| | - Markus F Neurath
- Department of Medicine 1, University Hospital Center, Friedrich-Alexander University, Erlangen-Nuremberg, Germany
| | - Imke Atreya
- Department of Medicine 1, University Hospital Center, Friedrich-Alexander University, Erlangen-Nuremberg, Germany
| | - Stefan Wirtz
- Department of Medicine 1, University Hospital Center, Friedrich-Alexander University, Erlangen-Nuremberg, Germany
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Schulz-Kuhnt A, Zundler S, Grüneboom A, Neufert C, Wirtz S, Neurath MF, Atreya I. Advanced Imaging of Lung Homing Human Lymphocytes in an Experimental In Vivo Model of Allergic Inflammation Based on Light-sheet Microscopy. J Vis Exp 2019. [PMID: 31058894 DOI: 10.3791/59043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Overwhelming tissue accumulation of highly activated immune cells represents a hallmark of various chronic inflammatory diseases and emerged as an attractive therapeutic target in the clinical management of affected patients. In order to further optimize strategies aiming at therapeutic regulation of pathologically imbalanced tissue infiltration of pro-inflammatory immune cells, it will be of particular importance to achieve improved insights into disease- and organ-specific homing properties of peripheral lymphocytes. The here described experimental protocol allows to monitor lung accumulation of fluorescently labeled and adoptively transferred human lymphocytes in the context of papain-induced pulmonary inflammation. In contrast to standard in vitro assays frequently used for the analysis of immune cell migration and chemotaxis, the now introduced in vivo setting takes into account lung-specific aspects of tissue organization and the influence of the complex inflammatory scenario taking place in the living murine organism. Moreover, three-dimensional cross-sectional light-sheet fluorescence microscopic imaging does not only provide quantitative data on infiltrating immune cells, but also depicts the pattern of immune cell localization within the inflamed lung. Overall, we are able to introduce an innovative technique of high value for immunological research in the field of chronic inflammatory lung diseases, which can be easily applied by following the provided step-by-step protocol.
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Affiliation(s)
| | | | | | | | - Stefan Wirtz
- Department of Medicine 1, University Hospital of Erlangen
| | | | - Imke Atreya
- Department of Medicine 1, University Hospital of Erlangen;
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Scheibe K, Kersten C, Schmied A, Vieth M, Primbs T, Carlé B, Knieling F, Claussen J, Klimowicz AC, Zheng J, Baum P, Meyer S, Schürmann S, Friedrich O, Waldner MJ, Rath T, Wirtz S, Kollias G, Ekici AB, Atreya R, Raymond EL, Mbow ML, Neurath MF, Neufert C. Inhibiting Interleukin 36 Receptor Signaling Reduces Fibrosis in Mice With Chronic Intestinal Inflammation. Gastroenterology 2019; 156:1082-1097.e11. [PMID: 30452921 DOI: 10.1053/j.gastro.2018.11.029] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 11/08/2018] [Accepted: 11/09/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Intestinal fibrosis is a long-term complication in inflammatory bowel diseases (IBD) that frequently results in functional damage, bowel obstruction, and surgery. Interleukin (IL) 36 is a group of cytokines in the IL1 family with inflammatory effects. We studied the expression of IL36 and its receptor, interleukin 1 receptor like 2 (IL1RL2 or IL36R) in the development of intestinal fibrosis in human tissues and mice. METHODS We obtained intestinal tissues from 92 patients with Crohn's disease (CD), 48 patients with ulcerative colitis, and 26 patients without inflammatory bowel diseases (control individuals). Tissues were analyzed by histology to detect fibrosis and by immunohistochemistry to determine the distribution of fibroblasts and levels of IL36R ligands. Human and mouse fibroblasts were incubated with IL36 or control medium, and transcriptome-wide RNA sequences were analyzed. Mice were given neutralizing antibodies against IL36R, and we studied intestinal tissues from Il1rl2-/- mice; colitis and fibrosis were induced in mice by repetitive administration of DSS or TNBS. Bone marrow cells were transplanted from Il1rl2-/- to irradiated wild-type mice and intestinal tissues were analyzed. Antibodies against IL36R were applied to mice with established chronic colitis and fibrosis and intestinal tissues were studied. RESULTS Mucosal and submucosal tissue from patients with CD or ulcerative colitis had higher levels of collagens, including type VI collagen, compared with tissue from control individuals. In tissues from patients with fibrostenotic CD, significantly higher levels of IL36A were noted, which correlated with high numbers of activated fibroblasts that expressed α-smooth muscle actin. IL36R activation of mouse and human fibroblasts resulted in expression of genes that regulate fibrosis and tissue remodeling, as well as expression of collagen type VI. Il1rl2-/- mice and mice given injections of an antibody against IL36R developed less severe colitis and fibrosis after administration of DSS or TNBS, but bone marrow cells from Il1rl2-/- mice did not prevent induction of colitis and fibrosis. Injection of antibodies against IL36R significantly reduced established fibrosis in mice with chronic intestinal inflammation. CONCLUSION We found higher levels of IL36A in fibrotic intestinal tissues from patients with IBD compared with control individuals. IL36 induced expression of genes that regulate fibrogenesis in fibroblasts. Inhibition or knockout of the IL36R gene in mice reduces chronic colitis and intestinal fibrosis. Agents designed to block IL36R signaling could be developed for prevention and treatment of intestinal fibrosis in patients with IBD.
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Affiliation(s)
- Kristina Scheibe
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Christina Kersten
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Anabel Schmied
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Michael Vieth
- Institute of Pathology, Klinikum Bayreuth, Bayreuth, Germany
| | - Tatjana Primbs
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Birgitta Carlé
- Institute of Medical Biotechnology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ferdinand Knieling
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany; Department of Pediatrics and Adolescent Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | | | | | - Jie Zheng
- Boehringer Ingelheim Pharmaceuticals Inc, Ridgefield, Connecticut
| | - Patrick Baum
- Boehringer Ingelheim Pharmaceuticals Inc, Ridgefield, Connecticut
| | - Sebastian Meyer
- Institute of Medical Informatics, Biometry, and Epidemiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Sebastian Schürmann
- Institute of Medical Biotechnology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Maximilian J Waldner
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Timo Rath
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Stefan Wirtz
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - George Kollias
- Biomedical Sciences Research Center Alexander Fleming, Vari, Greece
| | - Arif B Ekici
- Institute of Human Genetics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Raja Atreya
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ernest L Raymond
- Boehringer Ingelheim Pharmaceuticals Inc, Ridgefield, Connecticut
| | - M Lamine Mbow
- Boehringer Ingelheim Pharmaceuticals Inc, Ridgefield, Connecticut
| | - Markus F Neurath
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
| | - Clemens Neufert
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany.
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Hayek I, Fischer F, Schulze-Luehrmann J, Dettmer K, Sobotta K, Schatz V, Kohl L, Boden K, Lang R, Oefner PJ, Wirtz S, Jantsch J, Lührmann A. Limitation of TCA Cycle Intermediates Represents an Oxygen-Independent Nutritional Antibacterial Effector Mechanism of Macrophages. Cell Rep 2019; 26:3502-3510.e6. [DOI: 10.1016/j.celrep.2019.02.103] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 12/16/2018] [Accepted: 02/25/2019] [Indexed: 10/27/2022] Open
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Abstract
Colorectal cancer (CRC) is a highly prominent cause of cancer-related deaths worldwide. Although the functions of immune cells in the colorectal tumor microenvironment are complex and heterogeneous, dysregulated changes in the composition and activation state of immune cells are believed to represent key events supporting the establishment of pro- or anti-tumorigenic immune states. Recently, innate lymphoid cells (ILCs) emerged as central innate immune mediators during both gastrointestinal homeostasis and inflammatory pathologies. Hence, ILCs might also represent promising targets in the context of cancer therapy and are increasingly recognized as innate immune cells with potent immunomodulatory properties. In this review, we summarize the pleiotropic roles of the different ILC subsets for intestinal homeostasis and discuss the recent evidence on their potential involvement in the development and growth of intestinal cancers.
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Affiliation(s)
- Imke Atreya
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany
| | - Markus Kindermann
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany.
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63
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Schink M, Konturek PC, Tietz E, Dieterich W, Pinzer TC, Wirtz S, Neurath MF, Zopf Y. Microbial patterns in patients with histamine intolerance. J Physiol Pharmacol 2018; 69. [PMID: 30552302 DOI: 10.26402/jpp.2018.4.09] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 08/30/2018] [Indexed: 11/03/2022]
Abstract
Histamine intolerance represents a controversially discussed disorder. Besides an impaired degradation of orally supplied histamine due to diamine oxidase (DAO) deficiency, a deranged gut flora may also contribute to elevated histamine levels. Our aim was to determine the intestinal bacterial composition in patients with proven histamine intolerance in comparison to other food intolerances and healthy controls. A total of 64 participants were included in the study, encompassing 8 patients with histamine intolerance (HIT), 25 with food hypersensitivity (FH), 21 with food allergy and 10 healthy controls (HC). All participants underwent blood testing for total and food-specific immunoglobulin E, plasma histamine and DAO serum activity. Stool samples were used to analyze stool histamine and zonulin levels and bacterial composition by 16s rRNA sequencing. No significant differences in stool histamine levels were observed, but HIT patients showed elevated levels of stool zonulin. Microbiota analysis revealed increased levels of Proteobacteria (5.4%) and a significantly reduced alpha-diversity in the HIT group (P = 0.019). On family level, HC showed a significantly higher abundance of Bifidobacteriaceae compared to other study groups (P = 0.005), with lowest levels in the HIT group (P = 0.036). Also significantly reduced abundances of the genera Butyricimonas (P = 0.026) and Hespellia (P = 0.025) were observed in the HIT patients, whereas Roseburia were significantly elevated (P = 0.021). We concluded that the altered occurrence of Proteobacteria and Bifidobacteriaceae, reduced alpha-diversity as well as elevated stool zonulin levels suggest a dysbiosis and intestinal barrier dysfunction in histamine intolerant patients, which in turn may play an important role in driving disease pathogenesis.
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Affiliation(s)
- M Schink
- First Department of Medicine, Hector Center for Nutrition, Exercise and Sports, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erlangen, Germany
| | - P C Konturek
- Second Department of Medicine, Thuringia-Clinic Saalfeld, Saalfeld/Saale, Germany
| | - E Tietz
- First Department of Medicine, Hector Center for Nutrition, Exercise and Sports, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erlangen, Germany
| | - W Dieterich
- First Department of Medicine, Hector Center for Nutrition, Exercise and Sports, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erlangen, Germany
| | - T C Pinzer
- First Department of Medicine, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erlangen, Germany
| | - S Wirtz
- First Department of Medicine, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erlangen, Germany
| | - M F Neurath
- First Department of Medicine, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erlangen, Germany
| | - Y Zopf
- First Department of Medicine, Hector Center for Nutrition, Exercise and Sports, Friedrich-Alexander-Universitaet Erlangen-Nuernberg, Erlangen, Germany.
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64
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Pieper C, Pfaff F, Maier G, Kruggel-Emden H, Wirtz S, Noack B, Gruna R, Scherer V, Hanebeck U, Längle T, Beyerer J. Numerical modelling of an optical belt sorter using a DEM–CFD approach coupled with particle tracking and comparison with experiments. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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65
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Ruder B, Murtadak V, Stürzl M, Wirtz S, Distler U, Tenzer S, Mahapatro M, Greten FR, Hu Y, Neurath MF, Cesarman E, Ballon G, Günther C, Becker C. Chronic intestinal inflammation in mice expressing viral Flip in epithelial cells. Mucosal Immunol 2018; 11:1621-1629. [PMID: 30104627 PMCID: PMC8063487 DOI: 10.1038/s41385-018-0068-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 07/04/2018] [Accepted: 07/10/2018] [Indexed: 02/04/2023]
Abstract
Viruses are present in the intestinal microflora and are currently discussed as a potential causative mechanism for the development of inflammatory bowel disease. A number of viruses, such as Human Herpesvirus-8, express homologs to cellular FLIPs, which are major contributors for the regulation of epithelial cell death. In this study we analyzed the consequences of constitutive expression of HHV8-viral FLIP in intestinal epithelial cells (IECs) in mice. Surprisingly, expression of vFlip disrupts tissue homeostasis and induces severe intestinal inflammation. Moreover vFlipIEC-tg mice showed reduced Paneth cell numbers, associated with excessive necrotic cell death. On a molecular level vFlip expression altered classical and alternative NFκB activation. Blocking of alternative NFκB signaling by deletion of Ikka in vivo largely protected mice from inflammation and Paneth cell loss induced by vFLIP. Collectively, our data provide functional evidence that expression of a single viral protein in IECs can be sufficient to disrupt epithelial homeostasis and to initiate chronic intestinal inflammation.
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Affiliation(s)
- Barbara Ruder
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Vinay Murtadak
- Division of Molecular and Experimental Surgery, Department of Surgery, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Michael Stürzl
- Division of Molecular and Experimental Surgery, Department of Surgery, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Ute Distler
- Institute for Immunology, University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - Stefan Tenzer
- Institute for Immunology, University Medical Center, Johannes Gutenberg University, Mainz, Germany
| | - Mousumi Mahapatro
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Florian R. Greten
- Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt am Main, Germany
| | - Yinling Hu
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, Frederick, MD, USA
| | - Markus F. Neurath
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Ethel Cesarman
- Department of Pathology and Laboratory Medicine, Weill Medical College of Cornell University, New York, NY, USA
| | - Gianna Ballon
- Department of Pathology and Laboratory Medicine, Northwell Health, Lake Success, NY, USA
| | - Claudia Günther
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Christoph Becker
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
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67
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Becker C, Barbulescu K, Wirtz S, Meyer zum Büschenfelde KH, Pettersson S, Neurath MF. Constitutive and inducible in vivo protein-DNA interactions at the tumor necrosis factor-alpha promoter in primary human T lymphocytes. Gene Expr 2018; 8:115-27. [PMID: 10551799 PMCID: PMC6157389] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Tumor necrosis factor-alpha (TNF-alpha) is a key cytokine of lymphocytes with major regulatory functions in immunomodulation, chronic inflammation, and septic shock. However, only limited information on TNF promoter regulation in vivo in primary lymphocytes is available. To determine and compare protein-DNA interactions at the native TNF locus in primary lymphocytes, we analyzed the human TNF-alpha promoter by ligation-mediated polymerase chain reaction (LM-PCR) techniques. Accordingly, primary CD4+ T lymphocytes from peripheral blood were cultured in the presence of various stimuli and analyzed by LM-PCR. Inducible in vivo protein-DNA interactions at the TNF promoter were detected between -120 and -70 bp of the human TNF promoter relative to the transcriptional start site. This area includes binding sites for transcription factors such as ETS-1, NFAT, ATF-2/c-jun, SP-1/Egr-1, and NF-kappaB. In contrast, no protein-DNA interactions were observed at various binding sites with reported regulatory function in tumor cell lines such as the k2 element, the NFAT site at -160, the AP1 site at -50, and the SP1 site at -65. Additional mutagenesis and transfection studies demonstrated that NF-kappaB and CREB/AP-1 are important regulators of inducible TNF promoter activity in primary human T lymphocytes. These results provide novel insights into the complex regulation of TNF gene transcription in primary T lymphocytes in vivo by constitutive and inducible protein-DNA interactions that appear to be at least partially different compared to previously characterized tumor cell lines.
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Affiliation(s)
- C Becker
- Laboratory of Immunology, I. Medical Clinic, University of Mainz, Germany
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68
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Bambauer F, Wirtz S, Scherer V, Bartusch H. Transient DEM-CFD simulation of solid and fluid flow in a three dimensional blast furnace model. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.04.062] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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69
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Hefele M, Stolzer I, Ruder B, He GW, Mahapatro M, Wirtz S, Neurath MF, Günther C. Intestinal epithelial Caspase-8 signaling is essential to prevent necroptosis during Salmonella Typhimurium induced enteritis. Mucosal Immunol 2018; 11:1191-1202. [PMID: 29520026 DOI: 10.1038/s41385-018-0011-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 01/03/2018] [Accepted: 01/14/2018] [Indexed: 02/04/2023]
Abstract
Although induction of host cell death is a pivotal step during bacteria-induced gastroenteritis, the molecular regulation remains to be fully characterized. To expand our knowledge, we investigated the role of the central cell death regulator Caspase-8 in response to Salmonella Typhimurium. Here, we uncovered that intestinal salmonellosis was associated with strong upregulation of members of the host cell death machinery in intestinal epithelial cells (IECs) as an early event, suggesting that elimination of infected IECs represents a host defense strategy. Indeed, Casp8∆IEC mice displayed severe tissue damage and high lethality after infection. Additional deletion of Ripk3 or Mlkl rescued epithelial cell death and lethality of Casp8∆IEC mice, demonstrating the crucial role of Caspase-8 as a negative regulator of necroptosis. While Casp8∆IECTnfr1-/- mice showed improved survival after infection, tissue destruction was similar to Casp8∆IEC mice, indicating that necroptosis partially depends on TNF-α signaling. Although there was no impairment in antimicrobial peptide secretion during the early phase of infection, functional Caspase-8 seems to be required to control pathogen colonization. Collectively, these results demonstrate that Caspase-8 is essential to prevent Salmonella Typhimurium induced enteritis and to ensure host survival by two different mechanisms: maintenance of intestinal barrier function and restriction of pathogen colonization.
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Affiliation(s)
- Manuela Hefele
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Iris Stolzer
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Barbara Ruder
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Gui-Wei He
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Mousumi Mahapatro
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Markus F Neurath
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Claudia Günther
- Department of Medicine 1, University of Erlangen-Nuremberg, Erlangen, Germany.
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Doebbeler M, Koenig C, Krzyzak L, Seitz C, Wild A, Ulas T, Baßler K, Kopelyanskiy D, Butterhof A, Kuhnt C, Kreiser S, Stich L, Zinser E, Knippertz I, Wirtz S, Riegel C, Hoffmann P, Edinger M, Nitschke L, Winkler T, Schultze JL, Steinkasserer A, Lechmann M. CD83 expression is essential for Treg cell differentiation and stability. JCI Insight 2018; 3:99712. [PMID: 29875316 PMCID: PMC6124443 DOI: 10.1172/jci.insight.99712] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [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: 01/09/2018] [Accepted: 05/01/2018] [Indexed: 12/21/2022] Open
Abstract
Foxp3-positive regulatory T cells (Tregs) are crucial for the maintenance of immune homeostasis and keep immune responses in check. Upon activation, Tregs are transferred into an effector state expressing transcripts essential for their suppressive activity, migration, and survival. However, it is not completely understood how different intrinsic and environmental factors control differentiation. Here, we present for the first time to our knowledge data suggesting that Treg-intrinsic expression of CD83 is essential for Treg differentiation upon activation. Interestingly, mice with Treg-intrinsic CD83 deficiency are characterized by a proinflammatory phenotype. Furthermore, the loss of CD83 expression by Tregs leads to the downregulation of Treg-specific differentiation markers and the induction of an inflammatory profile. In addition, Treg-specific conditional knockout mice showed aggravated autoimmunity and an impaired resolution of inflammation. Altogether, our results show that CD83 expression in Tregs is an essential factor for the development and function of effector Tregs upon activation. Since Tregs play a crucial role in the maintenance of immune tolerance and thus prevention of autoimmune disorders, our findings are also clinically relevant.
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Affiliation(s)
- Marina Doebbeler
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Christina Koenig
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Lena Krzyzak
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Christine Seitz
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Andreas Wild
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Thomas Ulas
- Genomics & Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany
| | - Kevin Baßler
- Genomics & Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany
| | - Dmitry Kopelyanskiy
- Genomics & Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany
| | - Alina Butterhof
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Christine Kuhnt
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Simon Kreiser
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Lena Stich
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Elisabeth Zinser
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Ilka Knippertz
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, University Hospital Erlangen, Erlangen, Germany
| | - Christin Riegel
- Department of Internal Medicine 3, University Hospital Regensburg, Regensburg, Germany
| | - Petra Hoffmann
- Department of Internal Medicine 3, University Hospital Regensburg, Regensburg, Germany
| | - Matthias Edinger
- Department of Internal Medicine 3, University Hospital Regensburg, Regensburg, Germany
| | - Lars Nitschke
- Division of Genetics, Department of Biology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Thomas Winkler
- Division of Genetics, Department of Biology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Joachim L. Schultze
- Genomics & Immunoregulation, LIMES-Institute, University of Bonn, Bonn, Germany
| | - Alexander Steinkasserer
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
| | - Matthias Lechmann
- Department of Immune Modulation at the Department of Dermatology, University Hospital Erlangen, Erlangen, Germany
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Dieterich W, Schuppan D, Schink M, Schwappacher R, Wirtz S, Agaimy A, Neurath MF, Zopf Y. Influence of low FODMAP and gluten-free diets on disease activity and intestinal microbiota in patients with non-celiac gluten sensitivity. Clin Nutr 2018; 38:697-707. [PMID: 29653862 DOI: 10.1016/j.clnu.2018.03.017] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [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: 01/19/2018] [Revised: 03/23/2018] [Accepted: 03/26/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Non-celiac gluten sensitivity (NCGS) is characterized by intestinal and extra-intestinal symptoms triggered by ingestion of gluten. However, non-gluten triggers have recently been implicated, and a FODMAP (fermentable oligo-, di-, monosaccharides and polyols)-reduced diet can partially improve symptoms in NCGS. Our aim was to analyze the effect of a low FODMAP versus a gluten-free diet (GFD) on clinical symptoms, psychological well-being, intestinal inflammation and integrity, and stool microbiota. METHODS Nineteen patients with NCGS and ten healthy controls consumed a gluten-containing standard diet before starting a two-week low FODMAP diet; after a five day transition period, participants ingested a GFD for another two weeks. The primary outcome measure was the improvement of clinical symptoms in NCGS patients under the different diets. Secondary outcomes were the determination of dietary effects on intestinal inflammation, psychological well-being, and differences in stool microbiota between NCGS patients and controls. RESULTS The low FODMAP diet and especially the GFD led to a significant improvement of clinical and psychological symptoms in NCGS. A clear reduction in duodenal intraepithelial lymphocytes and mucin-producing Goblet cells was found after the GFD in these patients. Significant microbial differences between NCGS patients and controls were noticed in stool samples at every time point. Both diets caused microbial shifts in all participants, with a greater variability on genus level and metabolisms groups in NCGS patients. CONCLUSIONS Our findings suggest a multifactorial etiology of NCGS, due to a functional effect caused by FODMAPs, combined with a mild gluten-triggered immune reaction, and a microbiota dysbalance. CLINICALTRIAL. GOV ID NCT03268720.
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Affiliation(s)
- Walburga Dieterich
- Medical Department 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany; Hector Center of Excellence for Nutrition, Exercise and Sports, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany.
| | - Detlef Schuppan
- Institute of Translational Immunology, University Medical Center, Johannes-Gutenberg University, Mainz, Germany; Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Monic Schink
- Medical Department 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany; Hector Center of Excellence for Nutrition, Exercise and Sports, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
| | - Raphaela Schwappacher
- Medical Department 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany; Hector Center of Excellence for Nutrition, Exercise and Sports, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
| | - Stefan Wirtz
- Medical Department 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
| | - Abbas Agaimy
- Division of Pathology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
| | - Markus F Neurath
- Medical Department 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
| | - Yurdagül Zopf
- Medical Department 1, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany; Hector Center of Excellence for Nutrition, Exercise and Sports, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
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72
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Khalil M, Alliger K, Weidinger C, Yerinde C, Wirtz S, Becker C, Engel MA. Functional Role of Transient Receptor Potential Channels in Immune Cells and Epithelia. Front Immunol 2018; 9:174. [PMID: 29467763 PMCID: PMC5808302 DOI: 10.3389/fimmu.2018.00174] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 01/19/2018] [Indexed: 01/22/2023] Open
Abstract
Transient receptor potential (TRP) ion channels are widely expressed in several tissues throughout the mammalian organism. Originally, TRP channel physiology was focusing on its fundamental meaning in sensory neuronal function. Today, it is known that activation of several TRP ion channels in peptidergic neurons does not only result in neuropeptide release and consecutive neurogenic inflammation. Growing evidence demonstrates functional extra-neuronal TRP channel expression in immune and epithelial cells with important implications for mucosal immunology. TRP channels maintain intracellular calcium homeostasis to regulate various functions in the respective cells such as nociception, production and release of inflammatory mediators, phagocytosis, and cell migration. In this review, we provide an overview about TRP-mediated effects in immune and epithelial cells with an emphasis on mucosal immunology of the gut. Crosstalk between neurons, epithelial cells, and immune cells induced by activation of TRP channels orchestrates the immunologic response. Understanding of its molecular mechanisms paves the way to novel clinical approaches for the treatment of various inflammatory disorders including IBD.
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Affiliation(s)
- Mohammad Khalil
- Universitätsklinikum Erlangen, Medizinische Klinik 1, Erlangen, Germany
| | - Korina Alliger
- Universitätsklinikum Erlangen, Medizinische Klinik 1, Erlangen, Germany
| | - Carl Weidinger
- Charité Universitätsmedizin Berlin, Campus Benjamin Franklin Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Berlin, Germany
| | - Cansu Yerinde
- Charité Universitätsmedizin Berlin, Campus Benjamin Franklin Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Berlin, Germany
| | - Stefan Wirtz
- Universitätsklinikum Erlangen, Medizinische Klinik 1, Erlangen, Germany
| | - Christoph Becker
- Universitätsklinikum Erlangen, Medizinische Klinik 1, Erlangen, Germany
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73
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Ullrich E, Abendroth B, Rothamer J, Huber C, Büttner-Herold M, Buchele V, Vogler T, Longerich T, Zundler S, Völkl S, Beilhack A, Rose-John S, Wirtz S, Weber GF, Ghimire S, Kreutz M, Holler E, Mackensen A, Neurath MF, Hildner K. BATF-dependent IL-7RhiGM-CSF+ T cells control intestinal graft-versus-host disease. J Clin Invest 2018; 128:916-930. [PMID: 29376889 DOI: 10.1172/jci89242] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [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: 06/23/2016] [Accepted: 12/12/2017] [Indexed: 11/17/2022] Open
Abstract
Acute graft-versus-host disease (GVHD) represents a severe, T cell-driven inflammatory complication following allogeneic hematopoietic cell transplantation (allo-HCT). GVHD often affects the intestine and is associated with a poor prognosis. Although frequently detectable, proinflammatory mechanisms exerted by intestinal tissue-infiltrating Th cell subsets remain to be fully elucidated. Here, we show that the Th17-defining transcription factor basic leucine zipper transcription factor ATF-like (BATF) was strongly regulated across human and mouse intestinal GVHD tissues. Studies in complete MHC-mismatched and minor histocompatibility-mismatched (miHA-mismatched) GVHD models revealed that BATF-expressing T cells were functionally indispensable for intestinal GVHD manifestation. Mechanistically, BATF controlled the formation of colon-infiltrating, IL-7 receptor-positive (IL-7R+), granulocyte-macrophage colony-stimulating factor-positive (GM-CSF+), donor T effector memory (Tem) cells. This T cell subset was sufficient to promote intestinal GVHD, while its occurrence was largely dependent on T cell-intrinsic BATF expression, required IL-7-IL-7R interaction, and was enhanced by GM-CSF. Thus, this study identifies BATF-dependent pathogenic GM-CSF+ effector T cells as critical promoters of intestinal inflammation in GVHD and hence putatively provides mechanistic insight into inflammatory processes previously assumed to be selectively Th17 driven.
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Affiliation(s)
- Evelyn Ullrich
- Department of Medicine 5, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany.,Children's Hospital, Department of Pediatric Stem Cell Transplantation and Immunology, and.,LOEWE Center for Cell and Gene Therapy, Johann Wolfgang Goethe University, Frankfurt, Germany
| | - Benjamin Abendroth
- Department of Medicine 1, University Hospital Erlangen, University of Erlangen-Nuremberg, Kussmaul Campus for Medical Research, Erlangen, Germany
| | - Johanna Rothamer
- Department of Medicine 5, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany.,Children's Hospital, Department of Pediatric Stem Cell Transplantation and Immunology, and.,LOEWE Center for Cell and Gene Therapy, Johann Wolfgang Goethe University, Frankfurt, Germany
| | - Carina Huber
- Department of Medicine 1, University Hospital Erlangen, University of Erlangen-Nuremberg, Kussmaul Campus for Medical Research, Erlangen, Germany
| | - Maike Büttner-Herold
- Institute of Pathology, Department of Nephropathology, University Hospital Erlangen, Erlangen, Germany
| | - Vera Buchele
- Department of Medicine 1, University Hospital Erlangen, University of Erlangen-Nuremberg, Kussmaul Campus for Medical Research, Erlangen, Germany
| | - Tina Vogler
- Department of Medicine 1, University Hospital Erlangen, University of Erlangen-Nuremberg, Kussmaul Campus for Medical Research, Erlangen, Germany
| | - Thomas Longerich
- Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany
| | - Sebastian Zundler
- Department of Medicine 1, University Hospital Erlangen, University of Erlangen-Nuremberg, Kussmaul Campus for Medical Research, Erlangen, Germany
| | - Simon Völkl
- Department of Medicine 5, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Andreas Beilhack
- Center for Interdisciplinary Clinical Research, Würzburg University, Würzburg, Germany
| | - Stefan Rose-John
- Institute of Biochemistry, Christian-Albrechts-University, Kiel, Germany
| | - Stefan Wirtz
- Department of Medicine 1, University Hospital Erlangen, University of Erlangen-Nuremberg, Kussmaul Campus for Medical Research, Erlangen, Germany
| | - Georg F Weber
- Department of Surgery, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Sakhila Ghimire
- Department of Hematology and Oncology, University Hospital Regensburg, Regensburg, Germany
| | - Marina Kreutz
- Department of Hematology and Oncology, University Hospital Regensburg, Regensburg, Germany
| | - Ernst Holler
- Department of Hematology and Oncology, University Hospital Regensburg, Regensburg, Germany
| | - Andreas Mackensen
- Department of Medicine 5, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Markus F Neurath
- Department of Medicine 1, University Hospital Erlangen, University of Erlangen-Nuremberg, Kussmaul Campus for Medical Research, Erlangen, Germany
| | - Kai Hildner
- Department of Medicine 1, University Hospital Erlangen, University of Erlangen-Nuremberg, Kussmaul Campus for Medical Research, Erlangen, Germany
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Nold-Petry CA, Nold MF, Levy O, Kliger Y, Oren A, Borukhov I, Becker C, Wirtz S, Sandhu MK, Neurath M, Dinarello CA. Gp96 Peptide Antagonist gp96-II Confers Therapeutic Effects in Murine Intestinal Inflammation. Front Immunol 2017; 8:1531. [PMID: 29312281 PMCID: PMC5732239 DOI: 10.3389/fimmu.2017.01531] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/27/2017] [Indexed: 01/31/2023] Open
Abstract
Background The expression of heat shock protein gp96 is strongly correlated with the degree of tissue inflammation in ulcerative colitis and Crohn’s disease, thereby leading us to the hypothesis that inhibition of expression via gp96-II peptide prevents intestinal inflammation. Methods We employed daily injections of gp96-II peptide in two murine models of intestinal inflammation, the first resulting from five daily injections of IL-12/IL-18, the second via a single intrarectal application of TNBS (2,4,6-trinitrobenzenesulfonic acid). We also assessed the effectiveness of gp96-II peptide in murine and human primary cell culture. Results In the IL-12/IL-18 model, all gp96-II peptide-treated animals survived until day 5, whereas 80% of placebo-injected animals died. gp96-II peptide reduced IL-12/IL-18-induced plasma IFNγ by 89%, IL-1β by 63%, IL-6 by 43% and tumor necrosis factor (TNF) by 70% compared to controls. The clinical assessment Disease Activity Index of intestinal inflammation severity was found to be significantly lower in the gp96-II-treated animals when compared to vehicle-injected mice. gp96-II peptide treatment in the TNBS model limited weight loss to 5% on day 7 compared with prednisolone treatment, whereas placebo-treated animals suffered a 20% weight loss. Histological disease severity was reduced equally by prednisolone (by 40%) and gp96-II peptide (35%). Mice treated with either gp96-II peptide or prednisolone exhibited improved endoscopic scores compared with vehicle-treated control mice: vascularity, fibrin, granularity, and translucency scores were reduced by up to 49% by prednisolone and by up to 30% by gp96-II peptide. In vitro, gp96-II peptide reduced TLR2-, TLR4- and IL-12/IL-18-induced cytokine expression in murine splenocytes, with declines in constitutive IL-6 (54%), lipopolysaccharide-induced TNF (48%), IL-6 (81%) and in Staphylococcus epidermidis-induced TNF (67%) and IL-6 (81%), as well as IL-12/IL-18-induced IFNγ (75%). gp96-II peptide reduced IL–1β, IL-6, TNF and GM-CSF in human peripheral blood mononuclear cells to a similar degree without affecting cell viability, whereas RANTES, IL-25 and MIF were twofold to threefold increased. Conclusion gp96-II peptide protects against murine intestinal inflammation by regulating inflammation in vivo and in vitro, pointing to its promise as a novel treatment for inflammatory bowel disease.
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Affiliation(s)
- Claudia A Nold-Petry
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Paediatrics, Monash University, Melbourne, VIC, Australia
| | - Marcel F Nold
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Paediatrics, Monash University, Melbourne, VIC, Australia
| | | | | | | | | | - Christoph Becker
- Medical Clinic 1, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Stefan Wirtz
- Medical Clinic 1, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Manjeet K Sandhu
- Ritchie Centre, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Gastroenterology, Monash Health, Clayton, VIC, Australia
| | - Markus Neurath
- Medical Clinic 1, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Charles A Dinarello
- Department of Medicine, University of Colorado Denver, Aurora, CO, United States
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75
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Horenkamp-Sonntag D, Schneider U, Engel S, Wirtz S, Linder R. Organisiertes Einladungsverfahren beim Cervix-Carcinom: IST-Zustand der Screening-Inanspruchnahme vor Einführung eines HPV-Testverfahrens. Das Gesundheitswesen 2017. [DOI: 10.1055/s-0037-1605696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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76
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Rauber S, Luber M, Weber S, Maul L, Soare A, Wohlfahrt T, Lin NY, Dietel K, Bozec A, Herrmann M, Kaplan MH, Weigmann B, Zaiss MM, Fearon U, Veale DJ, Cañete JD, Distler O, Rivellese F, Pitzalis C, Neurath MF, McKenzie ANJ, Wirtz S, Schett G, Distler JHW, Ramming A. Resolution of inflammation by interleukin-9-producing type 2 innate lymphoid cells. Nat Med 2017; 23:938-944. [PMID: 28714991 DOI: 10.1038/nm.4373] [Citation(s) in RCA: 196] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/19/2017] [Indexed: 12/11/2022]
Abstract
Inflammatory diseases such as arthritis are chronic conditions that fail to resolve spontaneously. While the cytokine and cellular pathways triggering arthritis are well defined, those responsible for the resolution of inflammation are incompletely characterized. Here we identified interleukin (IL)-9-producing type 2 innate lymphoid cells (ILC2s) as the mediators of a molecular and cellular pathway that orchestrates the resolution of chronic inflammation. In mice, the absence of IL-9 impaired ILC2 proliferation and activation of regulatory T (Treg) cells, and resulted in chronic arthritis with excessive cartilage destruction and bone loss. In contrast, treatment with IL-9 promoted ILC2-dependent Treg activation and effectively induced resolution of inflammation and protection of bone. Patients with rheumatoid arthritis in remission exhibited high numbers of IL-9+ ILC2s in joints and the circulation. Hence, fostering IL-9-mediated ILC2 activation may offer a novel therapeutic approach inducing resolution of inflammation rather than suppression of inflammatory responses.
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Affiliation(s)
- Simon Rauber
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Markus Luber
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Stefanie Weber
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Lisa Maul
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Alina Soare
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Thomas Wohlfahrt
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Neng-Yu Lin
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Katharina Dietel
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Aline Bozec
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Martin Herrmann
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Mark H Kaplan
- Herman B Wells Center for Pediatric Research, Indianapolis, Indiana, USA
| | - Benno Weigmann
- Department of Internal Medicine 1, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Mario M Zaiss
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Ursula Fearon
- Molecular Rheumatology, School of Medicine, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Douglas J Veale
- Centre for Arthritis and Rheumatic Diseases, St. Vincent's University Hospital, Dublin, Ireland
| | - Juan D Cañete
- Departamento de Reumatología, Hospital Clínic de Barcelona e IDIBAPS, Barcelona, Spain
| | - Oliver Distler
- Division of Rheumatology, University Hospital Zurich, Zurich, Switzerland
| | - Felice Rivellese
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London and Barts Health NHS Trust, London, UK
| | - Costantino Pitzalis
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London and Barts Health NHS Trust, London, UK
| | - Markus F Neurath
- Department of Internal Medicine 1, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | | | - Stefan Wirtz
- Department of Internal Medicine 1, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Georg Schett
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Jörg H W Distler
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Andreas Ramming
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich Alexander University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
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77
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Hernández-Chirlaque C, Gámez-Belmonte R, Ocón B, Martínez-Moya P, Wirtz S, Sánchez de Medina F, Martínez-Augustin O. Tissue Non-specific Alkaline Phosphatase Expression is Needed for the Full Stimulation of T Cells and T Cell-Dependent Colitis. J Crohns Colitis 2017; 11:857-870. [PMID: 28039309 DOI: 10.1093/ecco-jcc/jjw222] [Citation(s) in RCA: 9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 12/14/2016] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND AIMS Two alkaline phosphatase isoforms, intestinal [IAP] and tissue non-specific alkaline phosphatase [TNAP], are coexpressed in mouse colon, with the latter predominating in colitis. We aimed to examine the role of TNAP in T lymphocytes, using heterozygous TNAP+/- mice [as TNAP-/- mice are non-viable]. METHODS In vitro primary cultures and in vivo T cell models using TNAP+/- mice were used. RESULTS Stimulated splenocytes [lipopolysaccharide and concanavalin A] and T lymphocytes [concanavalin A and a-CD3/a-CD28] showed a decreased cytokine production and expression when compared with wild-type [WT] cells. Decreased T cell activation was reproduced by the TNAP inhibitors levamisole, theophylline, and phenylalanine in WT cells. Intraperitoneal administration of anti-CD3 in vivo resulted in reduced plasma cytokine levels, and decreased activation of splenocytes and T cells ex vivo in TNAP+/- mice. We further tested the hypothesis that TNAP expressed in T lymphocytes is involved in T cell activation and inflammation, using the lymphocyte transfer model of colitis. Rag1-/- mice were transferred with T naïve cells [CD4+ CD62L+] from TNAP+/- or WT mice and developed colitis, which was attenuated in the group receiving TNAP+/- cells. Compared with WT, T cells from TNAP+/- mice showed a decreased capacity for proliferation, with no change in differentiation. CONCLUSIONS Our results offer clear evidence that TNAP modulates T lymphocyte function and specifically T cell-dependent colitis. This was associated with distinct changes in the type of TNAP expressed, probably because of changes in glycosylation.
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Affiliation(s)
- Cristina Hernández-Chirlaque
- Department of Biochemistry and Molecular Biology II, CIBERehd, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain
| | - Reyes Gámez-Belmonte
- Department of Pharmacology, CIBERehd, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain
| | - Borja Ocón
- Department of Pharmacology, CIBERehd, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain
| | - Patricia Martínez-Moya
- Department of Biochemistry and Molecular Biology II, CIBERehd, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain
| | - Stefan Wirtz
- Department of Medicine 1, University Clinics Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Fermín Sánchez de Medina
- Department of Pharmacology, CIBERehd, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain
| | - Olga Martínez-Augustin
- Department of Biochemistry and Molecular Biology II, CIBERehd, School of Pharmacy, Instituto de Investigación Biosanitaria ibs.GRANADA, University of Granada, Granada, Spain
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78
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Chiriac MT, Buchen B, Wandersee A, Hundorfean G, Günther C, Bourjau Y, Doyle SE, Frey B, Ekici AB, Büttner C, Weigmann B, Atreya R, Wirtz S, Becker C, Siebler J, Neurath MF. Activation of Epithelial Signal Transducer and Activator of Transcription 1 by Interleukin 28 Controls Mucosal Healing in Mice With Colitis and Is Increased in Mucosa of Patients With Inflammatory Bowel Disease. Gastroenterology 2017; 153:123-138.e8. [PMID: 28342759 DOI: 10.1053/j.gastro.2017.03.015] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 03/09/2017] [Accepted: 03/10/2017] [Indexed: 01/01/2023]
Abstract
BACKGROUND & AIMS We investigated the roles of interleukin 28A (also called IL28A or interferon λ2) in intestinal epithelial cell (IEC) activation, studying its effects in mouse models of inflammatory bowel diseases (IBD) and intestinal mucosal healing. METHODS Colitis was induced in C57BL/6JCrl mice (controls), mice with IEC-specific disruption of Stat1 (Stat1IEC-KO), mice with disruption of the interferon λ receptor 1 gene (Il28ra-/-), and mice with disruption of the interferon regulatory factor 3 gene (Irf3-/-), with or without disruption of Irf7 (Irf7-/-). We used high-resolution mini-endoscopy and in vivo imaging methods to assess colitis progression. We used 3-dimensional small intestine and colon organoids, along with RNA-Seq and gene ontology methods, to characterize the effects of IL28 on primary IECs. We studied the effects of IL28 on the human intestinal cancer cell line Caco-2 in a wound-healing assay, and in mice colon wounds. Colonic biopsies and resected tissue from patients with IBD (n = 62) and patients without colon inflammation (controls, n = 23) were analyzed by quantitative polymerase chain rection to measure expression of IL28A, IL28RA, and other related cytokines; biopsy samples were also analyzed by immunofluorescence to identify sources of IL28 production. IECs were isolated from patient tissues and incubated with IL28; signal transducer and activator of transcription 1 (STAT1) phosphorylation was measured by immunoblots and confocal imaging. RESULTS Lamina propria cells in colon tissues of patients with IBD, and mice with colitis, had increased expression of IL28 compared with controls; levels of IL28R were increased in the colonic epithelium of patients with IBD and mice with colitis. Administration of IL28 induced phosphorylation of STAT1 in primary human and mouse IECs, increasing with dose. Il28ra-/-, Irf3-/-, Irf3-/-Irf7-/-, as well as Stat1IEC-KO mice, developed more severe colitis after administration of dextran sulfate sodium than control mice, with reduced epithelial restitution. Il28ra-/- and Stat1IEC-KO mice also developed more severe colitis in response to oxazolone than control mice. We found IL28 to induce phosphorylation (activation) of STAT1 in epithelial cells, leading to their proliferation in organoid culture. Administration of IL28 to mice with induced colonic wounds promoted mucosal healing. CONCLUSIONS IL28 controls proliferation of IECs in mice with colitis and accelerates mucosal healing by activating STAT1. IL28 might be developed as a therapeutic agent for patients with IBD.
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Affiliation(s)
- Mircea T Chiriac
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany.
| | - Barbara Buchen
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Alexandra Wandersee
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Gheorghe Hundorfean
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Claudia Günther
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Yvonne Bourjau
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | | | - Benjamin Frey
- Department of Radiation Oncology, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Arif B Ekici
- Core Unit Genomics, Institute of Human Genetics, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Christian Büttner
- Core Unit Genomics, Institute of Human Genetics, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Benno Weigmann
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Raja Atreya
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany; Ludwig Demling Endoscopy Center of Excellence, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Stefan Wirtz
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Christoph Becker
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Jürgen Siebler
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Markus F Neurath
- Medical Clinic 1, Department of Medicine, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany; Ludwig Demling Endoscopy Center of Excellence, University of Erlangen-Nuremberg, Erlangen, Germany.
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Kurow O, Frey B, Schuster L, Schmitt V, Adam S, Hahn M, Gilchrist D, McInnes IB, Wirtz S, Gaipl US, Krönke G, Schett G, Frey S, Hueber AJ. Full Length Interleukin 33 Aggravates Radiation-Induced Skin Reaction. Front Immunol 2017; 8:722. [PMID: 28702024 PMCID: PMC5487387 DOI: 10.3389/fimmu.2017.00722] [Citation(s) in RCA: 9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 06/06/2017] [Indexed: 12/26/2022] Open
Abstract
The interleukin (IL)-1 family member IL-33 has been described as intracellular alarmin with broad roles in wound healing, skin inflammation but also autoimmunity. Its dichotomy between full length (fl) IL-33 and the mature (m) form of IL-33 and its release by necrosis is still not fully understood. Here, we compare functional consequences of both forms in the skin in vivo, and therefore generated two lines of transgenic mice which selectively overexpress mmIL-33 and flmIL-33 in basal keratinocytes. Transgene mRNA was expressed at high level in skin of both lines but not in organs due to the specific K14 promoter. We could demonstrate that transgenic overexpression of mmIL-33 in murine keratinocytes leads to a spontaneous skin inflammation as opposed to flmIL-33. K14-mmIL-33 mice synthesize and secrete high amounts of mmIL-33 along with massive cutaneous manifestations, like increased epidermis and dermis thickness, infiltration of mast cells in the epidermis and dermis layers and marked hyperkeratosis. Using skin inflammation models such as IL-23 administration, imiquimod treatment, or mechanical irritation did not lead to exacerbated inflammation in the K14-flmIL-33 strain. As radiation induces a strong dermatitis due to apoptosis and necrosis, we determined the effect of fractionated radiation (12 Gy, 4 times). In comparison to wild-type mice, an increase in ear thickness in flmIL-33 transgenic mice was observed 25 days after irradiation. Macroscopic examination showed more severe skin symptoms in irradiated ears compared to controls. In summary, secreted mmIL-33 itself has a potent capacity in skin inflammation whereas fl IL-33 is limited due to its intracellular retention. During tissue damage, fl IL-33 exacerbated radiation-induced skin reaction.
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Affiliation(s)
- Olga Kurow
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - Benjamin Frey
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Louis Schuster
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - Verena Schmitt
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - Susanne Adam
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - Madelaine Hahn
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - Derek Gilchrist
- Division of Infection, Immunity and Inflammation, Glasgow Biomedical Research Centre, University of Glasgow, Glasgow, United Kingdom
| | - Iain B McInnes
- Division of Infection, Immunity and Inflammation, Glasgow Biomedical Research Centre, University of Glasgow, Glasgow, United Kingdom
| | - Stefan Wirtz
- Department of Medicine 1, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Udo S Gaipl
- Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Gerhard Krönke
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - Georg Schett
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - Silke Frey
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
| | - Axel J Hueber
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, Erlangen, Germany
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80
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Scheibe K, Backert I, Wirtz S, Hueber A, Schett G, Vieth M, Probst HC, Bopp T, Neurath MF, Neufert C. IL-36R signalling activates intestinal epithelial cells and fibroblasts and promotes mucosal healing in vivo. Gut 2017; 66:823-838. [PMID: 26783184 DOI: 10.1136/gutjnl-2015-310374] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 12/18/2015] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Interleukin (IL)-36R signalling plays a proinflammatory role in different organs including the skin, but the expression of IL-36R ligands and their molecular function in intestinal inflammation are largely unknown. DESIGN We studied the characteristics of IL-36R ligand expression in IBDs and experimental colitis. The functional role of IL-36R signalling in the intestine was addressed in experimental colitis and wound healing models in vivo by using mice with defective IL-36R signalling (IL-36R-/-) or Myd88, neutralising anti-IL-36R antibodies, recombinant IL-36R ligands and RNA-seq genome expression analysis. RESULTS Expression of IL-36α and IL-36γ was significantly elevated in active human IBD and experimental colitis. While IL-36γ was predominantly detected in nuclei of the intestinal epithelium, IL-36α was mainly found in the cytoplasm of CD14+ inflammatory macrophages. Functional studies showed that defective IL-36R signalling causes high susceptibility to acute dextran sodium sulfate colitis and impairs wound healing. Mechanistically, IL-36R ligands released upon mucosal damage activated IL-36R+ colonic fibroblasts via Myd88 thereby inducing expression of chemokines, granulocyte-macrophage colony-stimulating factor (GM-CSF) and IL-6. Moreover, they induced proliferation of intestinal epithelial cells (IECs) and expression of the antimicrobial protein lipocalin 2. Finally, treatment of experimental intestinal wounds with IL-36R ligands significantly accelerated mucosal healing in vivo. CONCLUSIONS IL-36R signalling is activated upon intestinal damage, stimulates IECs and fibroblasts and drives mucosal healing. Modulation of the IL-36R pathway emerges as a potential therapeutic strategy for induction of mucosal healing in IBD.
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Affiliation(s)
- Kristina Scheibe
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nüernberg, Erlangen, Germany
| | - Ingo Backert
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nüernberg, Erlangen, Germany
| | - Stefan Wirtz
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nüernberg, Erlangen, Germany
| | - Axel Hueber
- Third Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nüernberg, Erlangen, Germany
| | - Georg Schett
- Third Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nüernberg, Erlangen, Germany
| | - Michael Vieth
- Institute of Pathology, Klinikum Bayreuth, Bayreuth, Germany
| | | | - Tobias Bopp
- Institute for Immunology, University Medical Center Mainz, Mainz, Germany
| | - Markus F Neurath
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nüernberg, Erlangen, Germany
| | - Clemens Neufert
- First Department of Medicine, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nüernberg, Erlangen, Germany
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81
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Wirtz S, Eich C, Becke K, Brenner S, Callies A, Harding U, Höhne C, Hoffmann F, Kaufmann J, Landsleitner B, Marung H, Nicolai T, Reifferscheid F, Trappe U, Jung P. [Use of cognitive aids in pediatric emergency care : Interdisciplinary consensus statement]. Anaesthesist 2017; 66:340-346. [PMID: 28455650 DOI: 10.1007/s00101-017-0310-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Preclinical pediatric emergencies are rare events and are therefore often associated with stress and uncertainty for emergency medical service personnel. To ensure adequate treatment of pediatric patients a variety of different cognitive aids exist (e.g. books, apps, rulers, weight-adapted bag systems). Especially the size specifications of the medical equipment and the dosage of emergency medication are individually very different in children and are dependent on parameters, such as body height and weight. Therefore, cognitive aids often enable length measurement whereby it is possible to draw conclusions on body weight for calculating the child's medication dosage. These aids may help to avoid the wrong medication dose or the wrong therapy of children but uncritical and untrained usage of these aids carries a potential risk of mistakes. This recommendation gives an overview of the general requirements and different problems of cognitive aids and should help improve the general framework and the rational basis for the use and further development of cognitive aids in emergency medicine.
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Affiliation(s)
- S Wirtz
- Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte e. V. (AGNN), Lübeck, Deutschland
| | - C Eich
- Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte e. V. (AGNN), Lübeck, Deutschland.,Wissenschaftlicher Arbeitskreis Kinderanästhesie (WAKKA), Deutschen Gesellschaft für Anästhesie und Intensivmedizin (DGAI), Nürnberg, Deutschland.,Sektion Pädiatrische Intensiv- und Notfallmedizin der Deutschen Interdisziplinären Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
| | - K Becke
- Wissenschaftlicher Arbeitskreis Kinderanästhesie (WAKKA), Deutschen Gesellschaft für Anästhesie und Intensivmedizin (DGAI), Nürnberg, Deutschland
| | - S Brenner
- Sektion Pädiatrische Intensiv- und Notfallmedizin der Deutschen Interdisziplinären Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
| | - A Callies
- Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte e. V. (AGNN), Lübeck, Deutschland
| | - U Harding
- Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte e. V. (AGNN), Lübeck, Deutschland
| | - C Höhne
- Wissenschaftlicher Arbeitskreis Kinderanästhesie (WAKKA), Deutschen Gesellschaft für Anästhesie und Intensivmedizin (DGAI), Nürnberg, Deutschland
| | - F Hoffmann
- Sektion Pädiatrische Intensiv- und Notfallmedizin der Deutschen Interdisziplinären Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
| | - J Kaufmann
- Wissenschaftlicher Arbeitskreis Kinderanästhesie (WAKKA), Deutschen Gesellschaft für Anästhesie und Intensivmedizin (DGAI), Nürnberg, Deutschland
| | - B Landsleitner
- Wissenschaftlicher Arbeitskreis Kinderanästhesie (WAKKA), Deutschen Gesellschaft für Anästhesie und Intensivmedizin (DGAI), Nürnberg, Deutschland
| | - H Marung
- Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte e. V. (AGNN), Lübeck, Deutschland
| | - T Nicolai
- Sektion Pädiatrische Intensiv- und Notfallmedizin der Deutschen Interdisziplinären Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
| | - F Reifferscheid
- Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte e. V. (AGNN), Lübeck, Deutschland
| | - U Trappe
- Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte e. V. (AGNN), Lübeck, Deutschland
| | - P Jung
- Arbeitsgemeinschaft in Norddeutschland tätiger Notärzte e. V. (AGNN), Lübeck, Deutschland. .,Sektion Pädiatrische Intensiv- und Notfallmedizin der Deutschen Interdisziplinären Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland. .,Klinik für Kinder- und Jugendmedizin, Universitätsklinikum Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538, Lübeck, Deutschland.
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82
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He GW, Günther C, Kremer AE, Thonn V, Amann K, Poremba C, Neurath MF, Wirtz S, Becker C. PGAM5-mediated programmed necrosis of hepatocytes drives acute liver injury. Gut 2017; 66:716-723. [PMID: 27566130 DOI: 10.1136/gutjnl-2015-311247] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 07/12/2016] [Accepted: 07/31/2016] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Autoimmune hepatitis (AIH) is a severe necroinflammatory liver disease associated with significant mortality. Although loss of hepatocytes is generally recognised as a key trigger of liver inflammation and liver failure, the regulation of hepatic cell death causing AIH remains poorly understood. The aim of this study was to identify molecular mechanisms that drive hepatocyte cell death in the pathogenesis of acute liver injury. DESIGN Acute liver injury was modelled in mice by intravenous administration of concanavalin A (ConA). Liver injury was demonstrated by serum transaminases and histological assessment of liver sections. PGAM5-deficient mice (PGAM5-/-) were used to determine its role in experimental hepatitis. Mdivi-1 was used as an inhibitor of dynamin-related protein 1 (Drp1)-mediated mitochondrial fission. Mitochondrial fission and the expression of PGAM5 were compared between liver biopsies derived from patients with AIH and control patients. RESULTS PGAM5 was highly expressed in hepatocytes of patients with AIH and in mice with ConA-induced experimental hepatitis. Deficiency of PGAM5 protected mice from ConA-induced hepatocellular death and liver injury. PGAM5 regulated ConA-induced mitochondrial fission in hepatocytes. Administration of the Drp1-inhibitor Mdivi-1 blocked mitochondrial fission, diminished hepatocyte cell death and attenuated liver tissue damage induced by ConA. CONCLUSIONS Our data demonstrate for the first time that PGAM5 plays an indispensable role in the pathogenesis of ConA-induced liver injury. Downstream of PGAM5, Drp1-mediated mitochondrial fission is an obligatory step that drives the execution of hepatic necrosis and tissue damage. Our data highlight the PGAM5-Drp1 axis as a potential therapeutic target for acute immune-mediated liver injury.
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Affiliation(s)
- Gui-Wei He
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany
| | - Claudia Günther
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany
| | - Andreas E Kremer
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany
| | - Veronika Thonn
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany
| | - Kerstin Amann
- Department of Nephropathology, Friedrich-Alexander-University, Erlangen, Germany
| | | | - Markus F Neurath
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany
| | - Christoph Becker
- Department of Medicine 1, Friedrich-Alexander-University, Erlangen, Germany
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83
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Nafsun A, Herz F, Specht E, Komossa H, Wirtz S, Scherer V, Liu X. Thermal bed mixing in rotary drums for different operational parameters. Chem Eng Sci 2017. [DOI: 10.1016/j.ces.2016.11.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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84
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Konturek PC, Koziel J, Dieterich W, Haziri D, Wirtz S, Glowczyk I, Konturek K, Neurath MF, Zopf Y. Successful therapy of Clostridium difficile infection with fecal microbiota transplantation. J Physiol Pharmacol 2016; 67:859-866. [PMID: 28195066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 12/19/2016] [Indexed: 06/06/2023]
Abstract
Clostridium difficile infection (CDI) is the most common cause of infectious diarrhea and represents an important burden for healthcare worldwide. Symptoms of severe CDI include watery, foul-smelling diarrhea, peripheral leucocytosis, increased C-reactive protein (CRP), acute renal failure, hypotension and pseudomembranous colitis. Recent studies indicate that the main cause of CDI is dysbiosis, an imbalance in the normal gut microbiota. The restoration of a healthy gut microbiota composition via fecal microbiota transplantation (FMT) recently became more popular. The aim of the present study was to assess the effect of FMT on the healing of CDI and to analyze the changes in the level of pro-inflammatory markers (C-reactive protein, fecal calprotectin) and pro-inflammatory cytokines. Eighteen patients with CDI were included in our study (6 males and 12 females) with recurrent and/or severe CDI. The FMT was performed in 17 patients using colonoscopy, including 16 patients receiving a one-time FMT and 1 patient who needed 2 additional FMTs. One patient was treated with a single round of FMT using push-and-pull enteroscopy. In all CDI patients, before and 3 weeks after FMT, the following parameters were analyzed: C-reactive protein, fecal calprotectin, and plasma interleukin (IL)-6, IL-8 and IL-12, and tumor necrosis factor-alpha (TNF-α). In addition, the plasma level of LL-37, a cathelicidine peptide was assessed by fluorescence-activated cell sorting (FACS) before and 3 months after FMT. Finally, in 7 patients a microbiome analysis was performed by sequencing of 16SrRNA in stool probes obtained before and 3 weeks after FMT. The healing rate of CDI was 94%. In all successfully treated patients no recurrent CDI was observed during follow-up (16 months). The serum level of pro-inflammatory cytokines (TNF-α, IL-1β, IL-6, IL-8 and IL-12) significantly decreased after FMT. Similarly, CRP and fecal calprotectin normalized after FMT. 3 months after FMT a significant increase of LL-37 in the plasma of successfully treated patients was monitored. The sequencing analysis demonstrated an elevated abundance of beneficial bacterial species such as Lactobacillaceae, Ruminococcaceae, Desulfovibrionaceae, Sutterellaceae and Porphyromonodacea after FMT. No serious side effects were observed. We concluded that FMT represented a very effective and safe treatment of recurrent and/or severe CDI and led to favorable shifts in the composition of gut microbiome.
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Affiliation(s)
- P C Konturek
- Department of Medicine, Thuringia Clinic Saalfeld, Teaching Hospital of the University Jena Saalfeld/Saale, Germany.
| | - J Koziel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland
| | - W Dieterich
- Department of Medicine I, University Erlangen-Nuremberg, Erlangen, Germany
| | - D Haziri
- Department of Medicine, Thuringia Clinic Saalfeld, Teaching Hospital of the University Jena Saalfeld/Saale, Germany
| | - S Wirtz
- Department of Medicine I, University Erlangen-Nuremberg, Erlangen, Germany
| | - I Glowczyk
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland
| | - K Konturek
- Department of Medicine, Thuringia Clinic Saalfeld, Teaching Hospital of the University Jena Saalfeld/Saale, Germany
| | - M F Neurath
- Department of Medicine I, University Erlangen-Nuremberg, Erlangen, Germany
| | - Y Zopf
- Department of Medicine I, University Erlangen-Nuremberg, Erlangen, Germany
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85
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Mchedlidze T, Kindermann M, Neves AT, Voehringer D, Neurath MF, Wirtz S. IL-27 suppresses type 2 immune responses in vivo via direct effects on group 2 innate lymphoid cells. Mucosal Immunol 2016; 9:1384-1394. [PMID: 26982595 DOI: 10.1038/mi.2016.20] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 02/06/2016] [Indexed: 02/04/2023]
Abstract
Group 2 innate lymphoid cells (ILC2) were recently characterized by their ability to produce significant amounts of type-2 signature cytokines and drive central beneficial and pathological features of type-2 immune responses. Although factors such as IL-33 and IL-25 were shown to have ILC2 activating capacity, it is not well understood, how ILC2 responses are regulated in vivo. Here we provide compelling evidence that IL-27-signalling directly inhibits ILC2 responses and reveal a novel mechanism for negative regulation of the innate arm of type-2 immunity. We demonstrate that IL-27-deficiency is linked to increased mucosal presence of ILC2 in a model of inflammatory lung disease. Moreover, IL-27-treatment inhibited ILC2 proliferation and cytokine production and significantly reduced their accumulation in vivo. During helminth infection, regulation of ILC2 by IL-27 directly impacted anti-parasitic immunity. Thus, therapeutic modulation of the IL-27/IL-27R axis may be relevant in a number of inflammatory conditions associated with dysregulated type-2 responses.
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Affiliation(s)
- T Mchedlidze
- Department of Medicine 1, University Medical Center, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany
| | - M Kindermann
- Department of Medicine 1, University Medical Center, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany
| | - A T Neves
- Department of Infection Biology, University Medical Center, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany
| | - D Voehringer
- Department of Infection Biology, University Medical Center, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany
| | - M F Neurath
- Department of Medicine 1, University Medical Center, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany
| | - S Wirtz
- Department of Medicine 1, University Medical Center, Friedrich-Alexander-University, Erlangen-Nuremberg, Germany
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86
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Khalil M, Babes A, Lakra R, Försch S, Reeh PW, Wirtz S, Becker C, Neurath MF, Engel MA. Transient receptor potential melastatin 8 ion channel in macrophages modulates colitis through a balance-shift in TNF-alpha and interleukin-10 production. Mucosal Immunol 2016; 9:1500-1513. [PMID: 26982596 DOI: 10.1038/mi.2016.16] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 01/19/2016] [Indexed: 02/04/2023]
Abstract
The transient receptor potential (TRP) ion channel family is well characterized in sensory neurons; however, little is known about its role in the immune system. Here we show that the cold-sensing TRPM8 has an unexpected role in innate immunity. TRPM8 expression and function in macrophages were demonstrated in vitro using molecular techniques and calcium imaging. In addition, adoptive macrophage transfer and systemic interleukin (IL)-10 overexpression were performed in experimental colitis. TRPM8 activation induced calcium-transients in murine peritoneal macrophages (PM) and bone marrow-derived macrophages of wild-type (WT) but not TRPM8-deficient mice. TRPM8-deficient PM exhibited defective phagocytosis and increased motility compared with those in WT, whereas the opposite effects of TRPM8 activation were induced in WT PM. TRPM8 activation or blockage/genetic deletion induced a anti- or pro-inflammatory macrophage cytokine profile, respectively. WT mice treated with repeated menthol (TRPM8 agonist) enemas were consistently protected from experimental colitis, whereas TRPM8-deficient mice showed increased colitis susceptibility. Adoptive transfer of TRPM8-deficient macrophages aggravated colitis, whereas systemic IL-10 overexpression rescued this phenotype. TRPM8 activation in peptidergic sensory neurons did not affect neuropeptide release from the inflamed colon. TRPM8 in macrophages determines pro- or anti-inflammatory actions by regulating tumor necrosis factor-α and interleukin-10 production. These findings suggest novel TRPM8-based options for immunomodulatory intervention.
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Affiliation(s)
- M Khalil
- Medizinische Klinik 1, Universitätsklinikum Erlangen, Erlangen, Germany
| | - A Babes
- University of Bucharest Department of Physiology, Faculty of Biology, Bucharest, Romania
| | - R Lakra
- Medizinische Klinik 1, Universitätsklinikum Erlangen, Erlangen, Germany
| | - S Försch
- Medizinische Klinik 1, Universitätsklinikum Erlangen, Erlangen, Germany
| | - P W Reeh
- Institute of Physiology and Pathophysiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - S Wirtz
- Medizinische Klinik 1, Universitätsklinikum Erlangen, Erlangen, Germany
| | - C Becker
- Medizinische Klinik 1, Universitätsklinikum Erlangen, Erlangen, Germany
| | - M F Neurath
- Medizinische Klinik 1, Universitätsklinikum Erlangen, Erlangen, Germany
| | - M A Engel
- Medizinische Klinik 1, Universitätsklinikum Erlangen, Erlangen, Germany
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87
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Günther C, He GW, Kremer AE, Murphy JM, Petrie EJ, Amann K, Vandenabeele P, Linkermann A, Poremba C, Schleicher U, Dewitz C, Krautwald S, Neurath MF, Becker C, Wirtz S. The pseudokinase MLKL mediates programmed hepatocellular necrosis independently of RIPK3 during hepatitis. J Clin Invest 2016; 126:4346-4360. [PMID: 27756058 DOI: 10.1172/jci87545] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 09/01/2016] [Indexed: 12/28/2022] Open
Abstract
Although necrosis and necroinflammation are central features of many liver diseases, the role of programmed necrosis in the context of inflammation-dependent hepatocellular death remains to be fully determined. Here, we have demonstrated that the pseudokinase mixed lineage kinase domain-like protein (MLKL), which plays a key role in the execution of receptor-interacting protein (RIP) kinase-dependent necroptosis, is upregulated and activated in human autoimmune hepatitis and in a murine model of inflammation-dependent hepatitis. Using genetic and pharmacologic approaches, we determined that hepatocellular necrosis in experimental hepatitis is driven by an MLKL-dependent pathway that occurs independently of RIPK3. Moreover, we have provided evidence that the cytotoxic activity of the proinflammatory cytokine IFN-γ in hepatic inflammation is strongly connected to induction of MLKL expression via activation of the transcription factor STAT1. In summary, our results reveal a pathway for MLKL-dependent programmed necrosis that is executed in the absence of RIPK3 and potentially drives the pathogenesis of severe liver diseases.
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88
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Danzer C, Koller A, Baier J, Arnold H, Giessler C, Opoka R, Schmidt S, Willers M, Mihai S, Parsch H, Wirtz S, Daniel C, Reinhold A, Engelmann S, Kliche S, Bogdan C, Hoebe K, Mattner J. A mutation within the SH2 domain of slp-76 regulates the tissue distribution and cytokine production of iNKT cells in mice. Eur J Immunol 2016; 46:2121-36. [PMID: 27349342 DOI: 10.1002/eji.201646331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 01/29/2016] [Revised: 05/18/2016] [Accepted: 06/23/2016] [Indexed: 01/01/2023]
Abstract
TCR ligation is critical for the selection, activation, and integrin expression of T lymphocytes. Here, we explored the role of the TCR adaptor protein slp-76 on iNKT-cell biology. Compared to B6 controls, slp-76(ace/ace) mice carrying a missense mutation (Thr428Ile) within the SH2-domain of slp-76 showed an increase in iNKT cells in the thymus and lymph nodes, but a decrease in iNKT cells in spleens and livers, along with reduced ADAP expression and cytokine response. A comparable reduction in iNKT cells was observed in the livers and spleens of ADAP-deficient mice. Like ADAP(-/-) iNKT cells, slp-76(ace/ace) iNKT cells were characterized by enhanced CD11b expression, correlating with an impaired induction of the TCR immediate-early gene Nur77 and a decreased adhesion to ICAM-1. Furthermore, CD11b-intrinsic effects inhibited cytokine release, concanavalin A-mediated inflammation, and iNKT-cell accumulation in the liver. Unlike B6 and ADAP(-/-) mice, the expression of the transcription factors Id3 and PLZF was reduced, whereas NP-1-expression was enhanced in slp-76(ace/ace) mice. Blockade of NP-1 decreased the recovery of iNKT cells from peripheral lymph nodes, identifying NP-1 as an iNKT-cell-specific adhesion factor. Thus, slp-76 contributes to the regulation of the tissue distribution, PLZF, and cytokine expression of iNKT cells via ADAP-dependent and -independent mechanisms.
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Affiliation(s)
- Claudia Danzer
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Anna Koller
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Julia Baier
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Harald Arnold
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Claudia Giessler
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Robert Opoka
- Division of Immunobiology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Stephanie Schmidt
- Division of Immunobiology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Maike Willers
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Sidonia Mihai
- Zentrallabor, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Hans Parsch
- Zentrallabor, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Stefan Wirtz
- Medizinische Klinik 1, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Christoph Daniel
- Nephropathologische Abteilung, Universitätsklinikum Erlangen and Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Annegret Reinhold
- Institute of Molecular and Clinical Immunology, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Swen Engelmann
- Institute of Molecular and Clinical Immunology, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Stefanie Kliche
- Institute of Molecular and Clinical Immunology, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Christian Bogdan
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany
| | - Kasper Hoebe
- Division of Immunobiology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Jochen Mattner
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen and Friedrich-Alexander Universität (FAU) Erlangen-Nürnberg, Erlangen, Germany. .,Division of Immunobiology, Cincinnati Children's Hospital, Cincinnati, OH, USA.
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89
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Abstract
The intestinal microbiota has important metabolic and host-protective functions. Conversely to these beneficial functions, the intestinal microbiota is thought to play a central role in the etiopathogenesis of inflammatory bowel disease (IBD; Crohn's disease and ulcerative colitis), a chronic inflammation of the gut mucosa. Genetic screens and studies in experimental mouse models have clearly demonstrated that IBD can develop due to excessive translocation of bacteria into the bowel wall or dysregulated handling of bacteria in genetically susceptible hosts. In healthy individuals, the microbiota is efficiently separated from the mucosal immune system of the gut by the gut barrier, a single layer of highly specialized epithelial cells, some of which are equipped with innate immune functions to prevent or control access of bacterial antigens to the mucosal immune cells. It is currently unclear whether the composition of the microbial flora or individual bacterial strains or pathogens induces or supports the pathogenesis of IBD. Further research will be necessary to carefully dissect the contribution of individual bacterial species to this disease and to ascertain whether specific modulation of the intestinal microbiome may represent a valuable further option for future therapeutic strategies.
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Affiliation(s)
- Christoph Becker
- Christoph Becker, PhD, is associated professor, Markus F. Neurath, MD, is director, and Stefan Wirtz, PhD, is senior scientist at the Department of Medicine 1 at the Friedrich-Alexander University Erlangen-Nuremberg in Erlangen, Germany
| | - Markus F Neurath
- Christoph Becker, PhD, is associated professor, Markus F. Neurath, MD, is director, and Stefan Wirtz, PhD, is senior scientist at the Department of Medicine 1 at the Friedrich-Alexander University Erlangen-Nuremberg in Erlangen, Germany
| | - Stefan Wirtz
- Christoph Becker, PhD, is associated professor, Markus F. Neurath, MD, is director, and Stefan Wirtz, PhD, is senior scientist at the Department of Medicine 1 at the Friedrich-Alexander University Erlangen-Nuremberg in Erlangen, Germany
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90
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Mahapatro M, Foersch S, Hefele M, He GW, Giner-Ventura E, Mchedlidze T, Kindermann M, Vetrano S, Danese S, Günther C, Neurath MF, Wirtz S, Becker C. Programming of Intestinal Epithelial Differentiation by IL-33 Derived from Pericryptal Fibroblasts in Response to Systemic Infection. Cell Rep 2016; 15:1743-56. [PMID: 27184849 DOI: 10.1016/j.celrep.2016.04.049] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [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: 05/21/2015] [Revised: 03/16/2016] [Accepted: 04/08/2016] [Indexed: 01/30/2023] Open
Abstract
The intestinal epithelium constitutes an efficient barrier against the microbial flora. Here, we demonstrate an unexpected function of IL-33 as a regulator of epithelial barrier functions. Mice lacking IL-33 showed decreased Paneth cell numbers and lethal systemic infection in response to Salmonella typhimurium. IL-33 was produced upon microbial challenge by a distinct population of pericryptal fibroblasts neighboring the intestinal stem cell niche. IL-33 programmed the differentiation of epithelial progenitors toward secretory IEC including Paneth and goblet cells. Finally, IL-33 suppressed Notch signaling in epithelial cells and induced expression of transcription factors governing differentiation into secretory IEC. In summary, we demonstrate that gut pericryptal fibroblasts release IL-33 to translate bacterial infection into an epithelial response to promote antimicrobial defense.
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Affiliation(s)
- Mousumi Mahapatro
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany
| | - Sebastian Foersch
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany
| | - Manuela Hefele
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany
| | - Gui-Wei He
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany
| | - Elisa Giner-Ventura
- Department of Pharmacology, University of Valencia, Burjassot, Valencia 46100, Spain
| | - Tamar Mchedlidze
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany
| | - Markus Kindermann
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany
| | | | - Silvio Danese
- Humanitas Clinical and Research Center, Milan 20089, Italy
| | - Claudia Günther
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany
| | - Markus F Neurath
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany
| | - Stefan Wirtz
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany
| | - Christoph Becker
- Medical Clinic 1, Friedrich-Alexander-University, Erlangen 91054, Germany.
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91
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92
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Rausch P, Basic M, Batra A, Bischoff SC, Blaut M, Clavel T, Gläsner J, Gopalakrishnan S, Grassl GA, Günther C, Haller D, Hirose M, Ibrahim S, Loh G, Mattner J, Nagel S, Pabst O, Schmidt F, Siegmund B, Strowig T, Volynets V, Wirtz S, Zeissig S, Zeissig Y, Bleich A, Baines JF. Analysis of factors contributing to variation in the C57BL/6J fecal microbiota across German animal facilities. Int J Med Microbiol 2016; 306:343-355. [PMID: 27053239 DOI: 10.1016/j.ijmm.2016.03.004] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [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: 01/31/2016] [Revised: 03/04/2016] [Accepted: 03/07/2016] [Indexed: 12/18/2022] Open
Abstract
The intestinal microbiota is involved in many physiological processes and it is increasingly recognized that differences in community composition can influence the outcome of a variety of murine models used in biomedical research. In an effort to describe and account for the variation in intestinal microbiota composition across the animal facilities of participating members of the DFG Priority Program 1656 "Intestinal Microbiota", we performed a survey of C57BL/6J mice from 21 different mouse rooms/facilities located at 13 different institutions across Germany. Fresh feces was sampled from five mice per room/facility using standardized procedures, followed by extraction and 16S rRNA gene profiling (V1-V2 region, Illumina MiSeq) at both the DNA and RNA (reverse transcribed to cDNA) level. In order to determine the variables contributing to bacterial community differences, we collected detailed questionnaires of animal husbandry practices and incorporated this information into our analyses. We identified considerable variation in a number of descriptive aspects including the proportions of major phyla, alpha- and beta diversity, all of which displayed significant associations to specific aspects of husbandry. Salient findings include a reduction in alpha diversity with the use of irradiated chow, an increase in inter-individual variability (beta diversity) with respect to barrier access and open cages and an increase in bacterial community divergence with time since importing from a vendor. We further observe a high degree of facility-level individuality, which is likely due to each facility harboring its own unique combination of multiple varying attributes of animal husbandry. While it is important to account and control for such differences between facilities, the documentation of such diversity may also serve as a valuable future resource for investigating the origins of microbial-driven host phenotypes.
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Affiliation(s)
- Philipp Rausch
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, August-Thienemann-Str. 2, 24306, Plön, Germany; Institute for Experimental Medicine, Evolutionary Genomics, Christian-Albrechts-University of Kiel, Arnold-Heller-Str. 3, Haus 17, 24105 Kiel, Germany
| | - Marijana Basic
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, Carl-Neuberg-Str.1, 30625 Hannover, Germany
| | - Arvind Batra
- Charité-Universitätsklinikum Berlin, Medical Department, Division of Gastroenterology, Infectiology and Rheumatology, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Stephan C Bischoff
- Department of Nutritional Medicine, University of Hohenheim, Fruwirthstr. 12, 70593 Stuttgart, Germany
| | - Michael Blaut
- Department of Gastrointestinal Microbiology, German Institute of Human Nutrition Potsdam-Rehbruecke, Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany
| | - Thomas Clavel
- ZIEL Institute for Food and Health, Technische Universität München, Gregor-Mendel-Str. 2, 85354, Freising-Weihenstephan, Germany
| | - Joachim Gläsner
- Institute for Medical Microbiology and Hygiene, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Shreya Gopalakrishnan
- Department of Internal Medicine I, University Medical Center Schleswig-Holstein, Arnold-Heller-Str. 3, 24105 Kiel, Germany
| | - Guntram A Grassl
- German Center for Infection Research (DZIF), Hannover-Braunschweig Site, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; Institute of Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany; Research Center Borstel, Parkallee 1-40, 23845, Borstel, Germany
| | - Claudia Günther
- Medical Clinic 1, Friedrich Alexander University, Ulmenweg 18, 91054 Erlangen, Germany
| | - Dirk Haller
- ZIEL Institute for Food and Health, Technische Universität München, Gregor-Mendel-Str. 2, 85354, Freising-Weihenstephan, Germany; Chair of Nutrition and Immunology, Technische Universität München, Gregor-Mendel-Str. 2, 85354 Freising-Weihenstephan, Germany
| | - Misa Hirose
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Saleh Ibrahim
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Gunnar Loh
- Department of Gastrointestinal Microbiology, German Institute of Human Nutrition Potsdam-Rehbruecke, Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany
| | - Jochen Mattner
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Lehrstuhl für Mikrobiologie und Infektionsimmunologie, Wasserturmstr. 3/5, 91054 Erlangen, Germany
| | - Stefan Nagel
- Charité - Universitätsklinikum Berlin, Research Institutes for Experimental Medicine, Krahmerstr. 6-10, 12207 Berlin, Germany
| | - Oliver Pabst
- Institute of Molecular Medicine, RWTH University, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Franziska Schmidt
- Charité-Universitätsklinikum Berlin, Medical Department, Division of Gastroenterology, Infectiology and Rheumatology, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Britta Siegmund
- Charité-Universitätsklinikum Berlin, Medical Department, Division of Gastroenterology, Infectiology and Rheumatology, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Till Strowig
- Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Valentina Volynets
- Department of Nutritional Medicine, University of Hohenheim, Fruwirthstr. 12, 70593 Stuttgart, Germany
| | - Stefan Wirtz
- Medical Clinic 1, Friedrich Alexander University, Ulmenweg 18, 91054 Erlangen, Germany
| | - Sebastian Zeissig
- Department of Internal Medicine I, University Medical Center Schleswig-Holstein, Arnold-Heller-Str. 3, 24105 Kiel, Germany; Department of Medicine I, University Medical Center Dresden and Center for Regenerative Therapies, Technical University Dresden, 01307 Dresden, Germany
| | - Yvonne Zeissig
- Department of Internal Medicine I, University Medical Center Schleswig-Holstein, Arnold-Heller-Str. 3, 24105 Kiel, Germany; Department of General Pediatrics, University Medical Center Dresden, Technical University Dresden, 01307 Dresden, Germany
| | - André Bleich
- Institute for Laboratory Animal Science and Central Animal Facility, Hannover Medical School, Carl-Neuberg-Str.1, 30625 Hannover, Germany
| | - John F Baines
- Max Planck Institute for Evolutionary Biology, Evolutionary Genomics, August-Thienemann-Str. 2, 24306, Plön, Germany; Institute for Experimental Medicine, Evolutionary Genomics, Christian-Albrechts-University of Kiel, Arnold-Heller-Str. 3, Haus 17, 24105 Kiel, Germany.
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93
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López-Posadas R, Becker C, Günther C, Tenzer S, Amann K, Billmeier U, Atreya R, Fiorino G, Vetrano S, Danese S, Ekici AB, Wirtz S, Thonn V, Watson AJM, Brakebusch C, Bergö M, Neurath MF, Atreya I. Rho-A prenylation and signaling link epithelial homeostasis to intestinal inflammation. J Clin Invest 2016; 126:611-26. [PMID: 26752649 DOI: 10.1172/jci80997] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 11/18/2015] [Indexed: 01/08/2023] Open
Abstract
Although defects in intestinal barrier function are a key pathogenic factor in patients with inflammatory bowel diseases (IBDs), the molecular pathways driving disease-specific alterations of intestinal epithelial cells (IECs) are largely unknown. Here, we addressed this issue by characterizing the transcriptome of IECs from IBD patients using a genome-wide approach. We observed disease-specific alterations in IECs with markedly impaired Rho-A signaling in active IBD patients. Localization of epithelial Rho-A was shifted to the cytosol in IBDs, and inflammation was associated with suppressed Rho-A activation due to reduced expression of the Rho-A prenylation enzyme geranylgeranyltransferase-I (GGTase-I). Functionally, we found that mice with conditional loss of Rhoa or the gene encoding GGTase-I, Pggt1b, in IECs exhibit spontaneous chronic intestinal inflammation with accumulation of granulocytes and CD4+ T cells. This phenotype was associated with cytoskeleton rearrangement and aberrant cell shedding, ultimately leading to loss of epithelial integrity and subsequent inflammation. These findings uncover deficient prenylation of Rho-A as a key player in the pathogenesis of IBDs. As therapeutic triggering of Rho-A signaling suppressed intestinal inflammation in mice with GGTase-I-deficient IECs, our findings suggest new avenues for treatment of epithelial injury and mucosal inflammation in IBD patients.
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94
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Komossa H, Wirtz S, Scherer V, Herz F, Specht E. Heat transfer in indirect heated rotary drums filled with monodisperse spheres: Comparison of experiments with DEM simulations. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2015.07.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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95
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Niedzielska M, Raffi FAM, Tel J, Muench S, Jozefowski K, Alati N, Lahl K, Mages J, Billmeier U, Schiemann M, Appelt UK, Wirtz S, Sparwasser T, Hochrein H, Figdor CG, Keyse SM, Lang R. Selective Expression of the MAPK Phosphatase Dusp9/MKP-4 in Mouse Plasmacytoid Dendritic Cells and Regulation of IFN-β Production. J Immunol 2015; 195:1753-62. [PMID: 26170386 DOI: 10.4049/jimmunol.1400658] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 06/12/2015] [Indexed: 01/01/2023]
Abstract
Plasmacytoid dendritic cells (pDCs) efficiently produce large amounts of type I IFN in response to TLR7 and TLR9 ligands, whereas conventional DCs (cDCs) predominantly secrete high levels of the cytokines IL-10 and IL-12. The molecular basis underlying this distinct phenotype is not well understood. In this study, we identified the MAPK phosphatase Dusp9/MKP-4 by transcriptome analysis as selectively expressed in pDCs, but not cDCs. We confirmed the constitutive expression of Dusp9 at the protein level in pDCs generated in vitro by culture with Flt3 ligand and ex vivo in sorted splenic pDCs. Dusp9 expression was low in B220(-) bone marrow precursors and was upregulated during pDC differentiation, concomitant with established pDC markers. Higher expression of Dusp9 in pDCs correlated with impaired phosphorylation of the MAPK ERK1/2 upon TLR9 stimulation. Notably, Dusp9 was not expressed at detectable levels in human pDCs, although these displayed similarly impaired activation of ERK1/2 MAPK compared with cDCs. Enforced retroviral expression of Dusp9 in mouse GM-CSF-induced cDCs increased the expression of TLR9-induced IL-12p40 and IFN-β, but not of IL-10. Conditional deletion of Dusp9 in pDCs was effectively achieved in Dusp9(flox/flox); CD11c-Cre mice at the mRNA and protein levels. However, the lack of Dusp9 in pDC did not restore ERK1/2 activation after TLR9 stimulation and only weakly affected IFN-β and IL-12p40 production. Taken together, our results suggest that expression of Dusp9 is sufficient to impair ERK1/2 activation and enhance IFN-β expression. However, despite selective expression in pDCs, Dusp9 is not essential for high-level IFN-β production by these cells.
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Affiliation(s)
- Magdalena Niedzielska
- Institute of Clinical Microbiology, Immunology and Hygiene, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Faizal A M Raffi
- Institute of Clinical Microbiology, Immunology and Hygiene, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Jurjen Tel
- Department of Tumor Immunology, Nijmegen Centre for Molecular Life Sciences, 6525 GA Nijmegen, the Netherlands
| | - Sandra Muench
- Cancer Research UK Stress Response Laboratory, Division of Cancer Research, Medical Research Institute, University of Dundee, Jacqui Wood Cancer Centre, Ninewells Hospital and Medical School, Dundee DD1 9SY, United Kingdom
| | - Katrin Jozefowski
- Institute of Clinical Microbiology, Immunology and Hygiene, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Nour Alati
- Institute of Clinical Microbiology, Immunology and Hygiene, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Katharina Lahl
- Institute of Medical Microbiology, Immunology and Hygiene, Technical University Munich, 81675 Munich, Germany; Section of Virology, National Veterinary Institute, Technical University of Denmark, 1870 Frederiksberg, Denmark; Immunology Section, Lund University, 221 00 Lund, Sweden
| | - Jörg Mages
- Institute of Medical Microbiology, Immunology and Hygiene, Technical University Munich, 81675 Munich, Germany
| | - Ulrike Billmeier
- Medical Clinic 1, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Matthias Schiemann
- Institute of Medical Microbiology, Immunology and Hygiene, Technical University Munich, 81675 Munich, Germany
| | - Uwe K Appelt
- Cell Sorting Unit, Nikolaus-Fiebiger-Center for Molecular Medicine, 91054 Erlangen, Germany
| | - Stefan Wirtz
- Medical Clinic 1, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Tim Sparwasser
- Institute of Medical Microbiology, Immunology and Hygiene, Technical University Munich, 81675 Munich, Germany; TWINCORE-Centre for Experimental and Clinical Infection Research, 30625 Hannover, Germany; and
| | - Hubertus Hochrein
- Department of Research, Bavarian Nordic GmbH, 82152 Martinsried, Germany
| | - Carl G Figdor
- Department of Tumor Immunology, Nijmegen Centre for Molecular Life Sciences, 6525 GA Nijmegen, the Netherlands
| | - Stephen M Keyse
- Cancer Research UK Stress Response Laboratory, Division of Cancer Research, Medical Research Institute, University of Dundee, Jacqui Wood Cancer Centre, Ninewells Hospital and Medical School, Dundee DD1 9SY, United Kingdom
| | - Roland Lang
- Institute of Clinical Microbiology, Immunology and Hygiene, University Hospital Erlangen, 91054 Erlangen, Germany; Institute of Medical Microbiology, Immunology and Hygiene, Technical University Munich, 81675 Munich, Germany;
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Höhner D, Wirtz S, Scherer V. A study on the influence of particle shape on the mechanical interactions of granular media in a hopper using the Discrete Element Method. POWDER TECHNOL 2015. [DOI: 10.1016/j.powtec.2015.02.046] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Foersch S, Sperka T, Lindner C, Taut A, Rudolph KL, Breier G, Boxberger F, Rau TT, Hartmann A, Stürzl M, Wittkopf N, Haep L, Wirtz S, Neurath MF, Waldner MJ. VEGFR2 Signaling Prevents Colorectal Cancer Cell Senescence to Promote Tumorigenesis in Mice With Colitis. Gastroenterology 2015; 149:177-189.e10. [PMID: 25797700 DOI: 10.1053/j.gastro.2015.03.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 03/16/2015] [Accepted: 03/16/2015] [Indexed: 12/14/2022]
Abstract
BACKGROUND & AIMS Senescence prevents cellular transformation. We investigated whether vascular endothelial growth factor (VEGF) signaling via its receptor, VEGFR2, regulates senescence and proliferation of tumor cells in mice with colitis-associated cancer (CAC). METHODS CAC was induced in VEGFR2(ΔIEC) mice, which do not express VEGFR2 in the intestinal epithelium, and VEGFR2(fl/fl) mice (controls) by administration of azoxymethane followed by dextran sodium sulfate. Tumor development and inflammation were determined by endoscopy. Colorectal tissues were collected for immunoblot, immunohistochemical, and quantitative polymerase chain reaction analyses. Findings from mouse tissues were confirmed in human HCT116 colorectal cancer cells. We analyzed colorectal tumor samples from patients before and after treatment with bevacizumab. RESULTS After colitis induction, VEGFR2(ΔIEC) mice developed significantly fewer tumors than control mice. A greater number of intestinal tumor cells from VEGFR2(ΔIEC) mice were in senescence than tumor cells from control mice. We found VEGFR2 to activate phosphatidylinositol-4,5-bisphosphate-3-kinase and AKT, resulting in inactivation of p21 in HCT116 cells. Inhibitors of VEGFR2 and AKT induced senescence in HCT116 cells. Tumor cell senescence promoted an anti-tumor immune response by CD8(+) T cells in mice. Patients whose tumor samples showed an increase in the proportion of senescent cells after treatment with bevacizumab had longer progression-free survival than patients in which the proportion of senescent tumor cells did not change before and after treatment. CONCLUSIONS Inhibition of VEGFR2 signaling leads to senescence of human and mouse colorectal cancer cells. VEGFR2 interacts with phosphatidylinositol-4,5-bisphosphate-3-kinase and AKT to inactivate p21. Colorectal tumor senescence and p21 level correlate with patient survival during treatment with bevacizumab.
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Affiliation(s)
| | - Tobias Sperka
- Fritz Lipmann Institute, Leibniz Institute for Age Research, Jena, Germany
| | | | - Astrid Taut
- Department of Medicine 1, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Karl L Rudolph
- Fritz Lipmann Institute, Leibniz Institute for Age Research, Jena, Germany
| | - Georg Breier
- Department of Pathology, Dresden University of Technology, Dresden, Germany
| | - Frank Boxberger
- Department of Medicine 1, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Tilman T Rau
- Department of Pathology, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Arndt Hartmann
- Department of Pathology, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Michael Stürzl
- Division of Molecular and Experimental Surgery, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Nadine Wittkopf
- Department of Medicine 1, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Lisa Haep
- Division of Molecular and Experimental Surgery, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, FAU Erlangen-Nürnberg, Erlangen, Germany
| | - Markus F Neurath
- Department of Medicine 1, FAU Erlangen-Nürnberg, Erlangen, Germany
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Wittkopf N, Pickert G, Billmeier U, Mahapatro M, Wirtz S, Martini E, Leppkes M, Neurath MF, Becker C. Activation of intestinal epithelial Stat3 orchestrates tissue defense during gastrointestinal infection. PLoS One 2015; 10:e0118401. [PMID: 25799189 PMCID: PMC4370566 DOI: 10.1371/journal.pone.0118401] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/14/2014] [Indexed: 01/21/2023] Open
Abstract
Gastrointestinal infections with EHEC and EPEC are responsible for outbreaks of diarrheal diseases and represent a global health problem. Innate first-line-defense mechanisms such as production of mucus and antimicrobial peptides by intestinal epithelial cells are of utmost importance for host control of gastrointestinal infections. For the first time, we directly demonstrate a critical role for Stat3 activation in intestinal epithelial cells upon infection of mice with Citrobacter rodentium – a murine pathogen that mimics human infections with attaching and effacing Escherichia coli. C. rodentium induced transcription of IL-6 and IL-22 in gut samples of mice and was associated with activation of the transcription factor Stat3 in intestinal epithelial cells. C. rodentium infection induced expression of several antimicrobial peptides such as RegIIIγ and Pla2g2a in the intestine which was critically dependent on Stat3 activation. Consequently, mice with specific deletion of Stat3 in intestinal epithelial cells showed increased susceptibility to C. rodentium infection as indicated by high bacterial load, severe gut inflammation, pronounced intestinal epithelial cell death and dissemination of bacteria to distant organs. Together, our data implicate an essential role for Stat3 activation in intestinal epithelial cells during C. rodentium infection. Stat3 concerts the host response to bacterial infection by controlling bacterial growth and suppression of apoptosis to maintain intestinal epithelial barrier function.
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Affiliation(s)
- Nadine Wittkopf
- Department of Medicine 1, Friedrich-Alexander-University, 91052 Erlangen, Germany
| | - Geethanjali Pickert
- Institute of Translational Immunology, Johannes Gutenberg-University, 55131 Mainz, Germany
| | - Ulrike Billmeier
- Department of Medicine 1, Friedrich-Alexander-University, 91052 Erlangen, Germany
| | - Mousumi Mahapatro
- Department of Medicine 1, Friedrich-Alexander-University, 91052 Erlangen, Germany
| | - Stefan Wirtz
- Department of Medicine 1, Friedrich-Alexander-University, 91052 Erlangen, Germany
| | - Eva Martini
- Department of Medicine 1, Friedrich-Alexander-University, 91052 Erlangen, Germany
| | - Moritz Leppkes
- Department of Medicine 1, Friedrich-Alexander-University, 91052 Erlangen, Germany
| | | | - Christoph Becker
- Department of Medicine 1, Friedrich-Alexander-University, 91052 Erlangen, Germany
- * E-mail:
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