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Markey GE, Ryan S, Furuta GT, Menard-Katcher C, McNamee EN, Masterson JC. Hypoxia-inducible microRNA-155 negatively regulates epithelial barrier in eosinophilic esophagitis by suppressing tight junction claudin-7. FASEB J 2024; 38:e23358. [PMID: 38050671 PMCID: PMC10699209 DOI: 10.1096/fj.202301934r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 12/06/2023]
Abstract
MicroRNA (miRNA)-mediated mRNA regulation directs many homeostatic and pathological processes, but how miRNAs coordinate aberrant esophageal inflammation during eosinophilic esophagitis (EoE) is poorly understood. Here, we report a deregulatory axis where microRNA-155 (miR-155) regulates epithelial barrier dysfunction by selectively constraining tight junction CLDN7 (claudin-7). MiR-155 is elevated in the esophageal epithelium of biopsies from patients with active EoE and in cell culture models. MiR-155 localization using in situ hybridization (ISH) in patient biopsies and intra-epithelial compartmentalization of miR-155 show expression predominantly within the basal epithelia. Epithelial miR-155 activity was evident through diminished target gene expression in 3D organotypic cultures, particularly in relatively undifferentiated basal cell states. Mechanistically, generation of a novel cell line with enhanced epithelial miR-155 stable overexpression induced a functionally deficient epithelial barrier in 3D air-liquid interface epithelial cultures measured by transepithelial electrical resistance (TEER). Histological assessment of 3D esophageal organoid cultures overexpressing miR-155 showed notable dilated intra-epithelial spaces. Unbiased RNA-sequencing analysis and immunofluorescence determined a defect in epithelial barrier tight junctions and revealed a selective reduction in the expression of critical esophageal tight junction molecule, claudin-7. Together, our data reveal a previously unappreciated role for miR-155 in mediating epithelial barrier dysfunction in esophageal inflammation.
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Affiliation(s)
- Gary E Markey
- Allergy, Inflammation & Remodelling Research Laboratory, Kathleen Lonsdale Institute for Human Health Research, Department of Biology, National University of Ireland Maynooth, Co. Kildare, Ireland
| | - Sinéad Ryan
- Allergy, Inflammation & Remodelling Research Laboratory, Kathleen Lonsdale Institute for Human Health Research, Department of Biology, National University of Ireland Maynooth, Co. Kildare, Ireland
| | - Glenn T Furuta
- Gastrointestinal Eosinophilic Diseases Program, Digestive Health Institute, Children’s Hospital Colorado, Department of Pediatrics, University of Colorado School of Medicine, CO, USA
| | - Calies Menard-Katcher
- Gastrointestinal Eosinophilic Diseases Program, Digestive Health Institute, Children’s Hospital Colorado, Department of Pediatrics, University of Colorado School of Medicine, CO, USA
| | - Eoin N McNamee
- Mucosal Immunology Research Laboratory, Kathleen Lonsdale Institute for Human Health Research, Department of Biology, National University of Ireland Maynooth, Co. Kildare, Ireland
| | - Joanne C Masterson
- Allergy, Inflammation & Remodelling Research Laboratory, Kathleen Lonsdale Institute for Human Health Research, Department of Biology, National University of Ireland Maynooth, Co. Kildare, Ireland
- Gastrointestinal Eosinophilic Diseases Program, Digestive Health Institute, Children’s Hospital Colorado, Department of Pediatrics, University of Colorado School of Medicine, CO, USA
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2
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Abstract
MicroRNAs (miRNAs) are a class of small endogenous RNA molecules between 18 to 25 nucleotides long. The primary function of miRNAs is in the posttranscriptional regulation of mRNA targets through RNA interference culminating in mRNA degradation or translational repression. MiRNAs are fundamental in physiological and pathological processes such as, cell proliferation, differentiation, apoptosis, and inflammation. Among this includes the uncovered potential of miRNAs in overall esophageal disease with a focus on the clinicopathologic allergic disease eosinophilic esophagitis (EoE), gastroesophageal reflux disease (GERD) and the tumorigenic continuum from Barrett's esophagus towards esophageal adenocarcinoma (EAC). Although these pathologies are distinct from one another, they share pathophysiological elements such as an intense inflammatory milieu, esophageal dysfunction, and, as presented in this review, an overlap in miRNA expression which contributes to overall esophageal disease. The overlap in the dysregulated miRNA transcriptome of these pathologies highlights the key role miRNAs play in contributing to esophageal disease progression. Owing to this notable dysregulation, there is an attractive utility for miRNAs as less-invasive diagnostic and prognostic biomarkers in esophageal diseases which already require invasive endoscopies and biopsy retrieval. In this review, miRNAs within EoE, GERD, BE, EAC and esophageal achalasia are discussed, as well as reviewing a core set of miRNAs shared in the disease progression among some of these pathologies, as well as the potential utility of targeting miRNAs as therapeutic options in overall esophageal disease.
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Affiliation(s)
- Gary E Markey
- Allergy, Inflammation and Remodelling Research Laboratory, Department of Biology, Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, County Kildare, Ireland
| | - Claire L Donohoe
- National Esophageal and Gastric Centre, St James's Hospital Dublin and Trinity St. James's Cancer Institute, Dublin, Ireland
| | - Eoin N McNamee
- Mucosal Immunology Research Laboratory, Department of Biology, Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, County Kildare, Ireland
| | - Joanne C Masterson
- Allergy, Inflammation and Remodelling Research Laboratory, Department of Biology, Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, County Kildare, Ireland
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, Digestive Health Institute, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, CO, United States
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Gallagher C, Mahon JM, O'Neill C, Cassidy FC, Dunbar H, De Barra C, Cadden C, Pisarska MM, Wood NAW, Masterson JC, McNamee EN, Schrumpf E, English K, O'Shea D, Tobin AM, Hogan AE. Mucosal-Associated Invariant T Cells Are Altered in Patients with Hidradenitis Suppurativa and Contribute to the Inflammatory Milieu. J Invest Dermatol 2022; 143:1094-1097.e2. [PMID: 36516909 DOI: 10.1016/j.jid.2022.11.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 12/14/2022]
Affiliation(s)
| | - Julie Mac Mahon
- Dermatology Department, Tallaght University Hospital, Dublin, Ireland
| | - Chloe O'Neill
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland
| | - Féaron C Cassidy
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland
| | - Hazel Dunbar
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland
| | - Conor De Barra
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland
| | - Caoimhe Cadden
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland
| | - Marta M Pisarska
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland; National Children's Research Centre, Dublin, Ireland
| | - Nicole A W Wood
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland; National Children's Research Centre, Dublin, Ireland
| | - Joanne C Masterson
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland
| | - Eoin N McNamee
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland
| | - Elisabeth Schrumpf
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway; Section of Dermatology, Oslo University Hospital, Oslo, Norway
| | - Karen English
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland
| | - Donal O'Shea
- Section of Dermatology, Oslo University Hospital, Oslo, Norway
| | - Anne Marie Tobin
- Dermatology Department, Tallaght University Hospital, Dublin, Ireland
| | - Andrew E Hogan
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, Maynooth, Ireland; National Children's Research Centre, Dublin, Ireland; St Vincent's University Hospital, Dublin, Ireland.
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Olli KE, Rapp C, O’Connell L, Collins CB, McNamee EN, Jensen O, Jedlicka P, Allison KC, Goldberg MS, Gerich ME, Frank DN, Ir D, Robertson CE, Evans CM, Aherne CM. Muc5ac Expression Protects the Colonic Barrier in Experimental Colitis. Inflamm Bowel Dis 2020; 26:1353-1367. [PMID: 32385500 PMCID: PMC7441107 DOI: 10.1093/ibd/izaa064] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND The mucus gel layer (MGL) lining the colon is integral to exclusion of bacteria and maintaining intestinal homeostasis in health and disease. Some MGL defects allowing bacteria to directly contact the colonic surface are commonly observed in ulcerative colitis (UC). The major macromolecular component of the colonic MGL is the secreted gel-forming mucin MUC2, whose expression is essential for homeostasis in health. In UC, another gel-forming mucin, MUC5AC, is induced. In mice, Muc5ac is protective during intestinal helminth infection. Here we tested the expression and functional role of MUC5AC/Muc5ac in UC biopsies and murine colitis. METHODS We measured MUC5AC/Muc5ac expression in UC biopsies and in dextran sulfate sodium (DSS) colitis. We performed DSS colitis in mice deficient in Muc5ac (Muc5ac-/-) to model the potential functional role of Muc5ac in colitis. To assess MGL integrity, we quantified bacterial-epithelial interaction and translocation to mesenteric lymph nodes. Antibiotic treatment and 16S rRNA gene sequencing were performed to directly investigate the role of bacteria in murine colitis. RESULTS Colonic MUC5AC/Muc5ac mRNA expression increased significantly in active UC and murine colitis. Muc5ac-/- mice experienced worsened injury and inflammation in DSS colitis compared with control mice. This result was associated with increased bacterial-epithelial contact and translocation to the mesenteric lymph nodes. However, no change in microbial abundance or community composition was noted. Antibiotic treatment normalized colitis severity in Muc5ac-/- mice to that of antibiotic-treated control mice. CONCLUSIONS MUC5AC/Muc5ac induction in the acutely inflamed colon controls injury by reducing bacterial breach of the MGL.
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Affiliation(s)
- Kristine E Olli
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Caroline Rapp
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Lauren O’Connell
- School of Medicine, Conway Institute, University College Dublin, Belfield, Dublin, Ireland
| | - Colm B Collins
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA
- Department of Pediatrics, Division of Gastroenterology, Hepatology and Nutrition, Digestive Health Institute, Children’s Hospital Colorado, Aurora, Colorado, USA
- School of Biomolecular and Biomedical Science, University College Dublin, Belfield, Dublin, Ireland
| | - Eoin N McNamee
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA
- Kathleen Lonsdale Institute for Human Health Research, Department of Biology, Maynooth University, County Kildare, Ireland
| | - Owen Jensen
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Paul Jedlicka
- Department of Pathology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Kristen C Allison
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Matthew S Goldberg
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Mark E Gerich
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Daniel N Frank
- Department of Medicine, Division of Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Diana Ir
- Department of Medicine, Division of Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Charles E Robertson
- Department of Medicine, Division of Infectious Diseases, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Christopher M Evans
- Department of Medicine, Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Carol M Aherne
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA
- School of Medicine, Conway Institute, University College Dublin, Belfield, Dublin, Ireland
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Mauner AL, McNamee EN. Morphometric and cytologic characterization of tertiary lymphoid follicles in resected bowel of patients with Diverticulitis, Ulcerative Colitis, and Crohn’s Disease. The Journal of Immunology 2019. [DOI: 10.4049/jimmunol.202.supp.182.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
The presentation of ectopic Tertiary lymphoid structures (TLS) in peripheral tissues is a pathological hallmark for a number of Autoimmune and Immune mediated conditions, not least within the bowel wall of patients with Crohn’s disease. However, there remains limited understanding of the cellular constituents or the function of TLS during intestinal pathology. To address this, we characterized the location, size, frequency and cellular constituents of B-cell follicles within resected bowel tissues from patients with Diverticulitis (DIV), Crohn’s Disease (CD) or Ulcerative Colitis (UC) (n=9–10/group). Samples were formalin fixed, paraffin embedded, serially sectioned, and subsequently stained by multiplexed immunohistochemistry. Morphometric analysis was performed with Olympus CellSens software and PerkinElmer Vectra 3.0 Automated Quantitative Pathology Imaging System and statistical analyses performed using R Statistical Software. Results show that the number, size and anatomic location of large B-cell aggregates differed greatly between disease states, with both UC and DIV follicles localizing primarily in the mucosa; while samples from patients with CD presented with mature Ki67+ TLS in the deeper layers of serosa and muscle. Multicolor IHC shows that TLS in Crohn's disease have large intra-germinal center CD4+ T-cell populations while UC samples contained a marked increase in both monocytes and neutrophils compared with both CD and DIV. These data suggest that despite ectopic TLS being present in a number of pathologic conditions, their composition within the bowel wall is disease state dependent and suggests altered germinal center function.
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Affiliation(s)
- Aaron Laurence Mauner
- 1Mucosal Inflammation Program, Department of Anesthesiology, University of Colorado School of Medicine
| | - Eoin N McNamee
- 1Mucosal Inflammation Program, Department of Anesthesiology, University of Colorado School of Medicine
- 2Institute of Immunology, Human Health Research Institute, Department of Biology, Maynooth University, Co. Kildare, Ireland
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Jones JC, Brindley CD, Elder NH, Myers MG, Rajala MW, Dekaney CM, McNamee EN, Frey MR, Shroyer NF, Dempsey PJ. Cellular Plasticity of Defa4 Cre-Expressing Paneth Cells in Response to Notch Activation and Intestinal Injury. Cell Mol Gastroenterol Hepatol 2018; 7:533-554. [PMID: 30827941 PMCID: PMC6402430 DOI: 10.1016/j.jcmgh.2018.11.004] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 11/13/2018] [Accepted: 11/16/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Loss of leucine-rich repeat-containing G-protein-coupled receptor 5-positive crypt base columnar cells provides permissive conditions for different facultative stem cell populations to dedifferentiate and repopulate the stem cell compartment. In this study, we used a defensin α4-Cre recombinase (Defa4Cre) line to define the potential of Paneth cells to dedifferentiate and contribute to intestinal stem cell (ISC) maintenance during normal homeostasis and after intestinal injury. METHODS Small intestine and enteroids from Defa4Cre;Rosa26 tandem dimer Tomato (tdTomato), a red fluoresent protein, (or Rosa26 Enhanced Yellow Fluorescent Protein (EYFP)) reporter, Notch gain-of-function (Defa4Cre;Rosa26 Notch Intracellular Domain (NICD)-ires-nuclear Green Fluorescent Protein (nGFP) and Defa4Cre;Rosa26reverse tetracycline transactivator-ires Enhanced Green Fluorescent Protein (EGFP);TetONICD), A Disintegrin and Metalloproteinase domain-containing protein 10 (ADAM10) loss-of-function (Defa4Cre;ADAM10flox/flox), and Adenomatous polyposis coli (APC) inactivation (Defa4Cre;APCflox/flox) mice were analyzed. Doxorubicin treatment was used as an acute intestinal injury model. Lineage tracing, proliferation, and differentiation were assessed in vitro and in vivo. RESULTS Defa4Cre-expressing cells are fated to become mature Paneth cells and do not contribute to ISC maintenance during normal homeostasis in vivo. However, spontaneous lineage tracing was observed in enteroids, and fluorescent-activated cell sorter-sorted Defa4Cre-marked cells showed clonogenic enteroid growth. Notch activation in Defa4Cre-expressing cells caused dedifferentiation to multipotent ISCs in vivo and was required for adenoma formation. ADAM10 deletion had no significant effect on crypt homeostasis. However, after acute doxorubicin-induced injury, Defa4Cre-expressing cells contributed to regeneration in an ADAM10-Notch-dependent manner. CONCLUSIONS Our studies have shown that Defa4Cre-expressing Paneth cells possess cellular plasticity, can dedifferentiate into multipotent stem cells upon Notch activation, and can contribute to intestinal regeneration in an acute injury model.
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Affiliation(s)
- Jennifer C. Jones
- Cell Biology, Stem Cells and Development Graduate Program, University of Colorado Medical School, Aurora, Colorado
| | - Constance D. Brindley
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Colorado Medical School, Aurora, Colorado
| | - Nicholas H. Elder
- Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Colorado Medical School, Aurora, Colorado
| | - Martin G. Myers
- Division of Metabolism, Endocrinology and Diabetes, Department of Internal Medicine, Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan
| | - Michael W. Rajala
- Division of Gastroenterology, Department of Digestive Disease and Transplantation, Einstein Health Network, Philadelphia, Pennsylvania
| | - Christopher M. Dekaney
- Department of Molecular Biomedical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Eoin N. McNamee
- Mucosal Immunology Program, University of Colorado Medical School, Aurora, Colorado
| | - Mark R. Frey
- Saban Research Institute, Children's Hospital Los Angeles, Department of Pediatrics, Department of Biochemistry and Molecular Biology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Noah F. Shroyer
- Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Peter J. Dempsey
- Cell Biology, Stem Cells and Development Graduate Program, University of Colorado Medical School, Aurora, Colorado,Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Colorado Medical School, Aurora, Colorado,Correspondence Address correspondence to: Peter J. Dempsey, PhD, Division of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Colorado Medical School, 12700 East 19th Avenue, Building RC2 Room 6113, Aurora, Colorado 80045. fax: (303) 724-6538.
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Henry CJ, Casas-Selves M, Kim J, Zaberezhnyy V, Aghili L, Daniel AE, Jimenez L, Azam T, McNamee EN, Clambey ET, Klawitter J, Serkova NJ, Tan AC, Dinarello CA, DeGregori J. Blunting age-associated chronic inflammation preserves hematopoiesis and immunity and reduces leukemogenesis. The Journal of Immunology 2017. [DOI: 10.4049/jimmunol.198.supp.60.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Aging is the single most important prognostic factor for the development of many cancers. While mutational accumulation may increase the risk of cancer in aged individuals, declining immunity due to chronic inflammation is also a likely contributing factor.
We have demonstrated that reducing aging-associated chronic inflammation abrogates fitness declines in B-progenitor cells, and significantly reduces leukemogenesis in aged mice (Henry et al., JCI, 2015). In addition to preserving the function of B-progenitor cells, subsequent studies have revealed that reducing chronic inflammation in aged mice augments immune responses. Specifically, reducing inflammation in aged mice (≥22 months) results in a two-fold reduction in the number of splenic M2 macrophage and T-regulatory cell populations, as well as, a three-fold reduction in the surface expression of the inhibitory protein PD-L1 on innate immune cells. Reducing chronic inflammation in aged mice also results in a three-fold increase in the percentage of interferon-gamma producing CD4+ and CD8+ T-cell lymphocytes when stimulated. These phenotypes were observed in aged, anti-inflammatory transgenic mice (alpha-1-anti-trypsin and interleukin-37) and in geriatric mice (≥27 months) treated with recombinant interleukin-37. Overall, these findings suggest that reducing chronic inflammation in aged populations can rejuvenate hematopoiesis and immunity, while also creating a less permissive environment for leukemogenesis.
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Ryan KM, Griffin ÉW, Ryan KJ, Tanveer R, Vanattou-Saifoudine N, McNamee EN, Fallon E, Heffernan S, Harkin A, Connor TJ. Clenbuterol activates the central IL-1 system via the β2-adrenoceptor without provoking inflammatory response related behaviours in rats. Brain Behav Immun 2016; 56:114-29. [PMID: 26928198 DOI: 10.1016/j.bbi.2016.02.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 02/18/2016] [Accepted: 02/25/2016] [Indexed: 01/09/2023] Open
Abstract
The long-acting, highly lipophilic, β2-adrenoceptor agonist clenbuterol may represent a suitable therapeutic agent for the treatment of neuroinflammation as it drives an anti-inflammatory response within the CNS. However, clenbuterol is also known to increase the expression of IL-1β in the brain, a potent neuromodulator that plays a role in provoking sickness related symptoms including anxiety and depression-related behaviours. Here we demonstrate that, compared to the immunological stimulus lipopolysaccharide (LPS, 250μg/kg), clenbuterol (0.5mg/kg) selectively up-regulates expression of the central IL-1 system resulting in a mild stress-like response which is accompanied by a reduction in locomotor activity and food consumption in rats. We provide further evidence that clenbuterol-induced activation of the central IL-1 system occurs in a controlled and selective manner in tandem with its negative regulators IL-1ra and IL-1RII. Furthermore, we demonstrate that peripheral β2-adrenoceptors mediate the suppression of locomotor activity and food consumption induced by clenbuterol and that these effects are not linked to the central induction of IL-1β. Moreover, despite increasing central IL-1β expression, chronic administration of clenbuterol (0.03mg/kg; twice daily for 21days) fails to induce anxiety or depressive-like behaviour in rats in contrast to reports of the ability of exogenously administered IL-1 to induce these symptoms in rodents. Overall, our findings suggest that clenbuterol or other selective β2-adrenoceptor agonists could have the potential to combat neuroinflammatory or neurodegenerative disorders without inducing unwanted symptoms of depression and anxiety.
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Affiliation(s)
- Karen M Ryan
- Neuroimmunology Research Group, Trinity College Institute of Neuroscience, Department of Physiology & School of Medicine, Trinity College, Dublin 2, Ireland
| | - Éadaoin W Griffin
- Neuroimmunology Research Group, Trinity College Institute of Neuroscience, Department of Physiology & School of Medicine, Trinity College, Dublin 2, Ireland
| | - Katie J Ryan
- Neuroimmunology Research Group, Trinity College Institute of Neuroscience, Department of Physiology & School of Medicine, Trinity College, Dublin 2, Ireland
| | - Riffat Tanveer
- Neuroimmunology Research Group, Trinity College Institute of Neuroscience, Department of Physiology & School of Medicine, Trinity College, Dublin 2, Ireland
| | - Natacha Vanattou-Saifoudine
- Neuropsychopharmacology Research Group, School of Pharmacy and Pharmaceutical Sciences & Trinity College Institute of Neuroscience, Trinity College, Dublin 2, Ireland
| | - Eoin N McNamee
- Neuroimmunology Research Group, Trinity College Institute of Neuroscience, Department of Physiology & School of Medicine, Trinity College, Dublin 2, Ireland
| | - Emer Fallon
- Neuroimmunology Research Group, Trinity College Institute of Neuroscience, Department of Physiology & School of Medicine, Trinity College, Dublin 2, Ireland
| | - Sheena Heffernan
- Neuroimmunology Research Group, Trinity College Institute of Neuroscience, Department of Physiology & School of Medicine, Trinity College, Dublin 2, Ireland
| | - Andrew Harkin
- Neuropsychopharmacology Research Group, School of Pharmacy and Pharmaceutical Sciences & Trinity College Institute of Neuroscience, Trinity College, Dublin 2, Ireland.
| | - Thomas J Connor
- Neuroimmunology Research Group, Trinity College Institute of Neuroscience, Department of Physiology & School of Medicine, Trinity College, Dublin 2, Ireland
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Henry CJ, Casás-Selves M, Kim J, Zaberezhnyy V, Aghili L, Daniel AE, Jimenez L, Azam T, McNamee EN, Clambey ET, Klawitter J, Serkova NJ, Tan AC, Dinarello CA, DeGregori J. Aging-associated inflammation promotes selection for adaptive oncogenic events in B cell progenitors. J Clin Invest 2015; 125:4666-80. [PMID: 26551682 DOI: 10.1172/jci83024] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 10/01/2015] [Indexed: 12/21/2022] Open
Abstract
The incidence of cancer is higher in the elderly; however, many of the underlying mechanisms for this association remain unexplored. Here, we have shown that B cell progenitors in old mice exhibit marked signaling, gene expression, and metabolic defects. Moreover, B cell progenitors that developed from hematopoietic stem cells (HSCs) transferred from young mice into aged animals exhibited similar fitness defects. We further demonstrated that ectopic expression of the oncogenes BCR-ABL, NRAS(V12), or Myc restored B cell progenitor fitness, leading to selection for oncogenically initiated cells and leukemogenesis specifically in the context of an aged hematopoietic system. Aging was associated with increased inflammation in the BM microenvironment, and induction of inflammation in young mice phenocopied aging-associated B lymphopoiesis. Conversely, a reduction of inflammation in aged mice via transgenic expression of α-1-antitrypsin or IL-37 preserved the function of B cell progenitors and prevented NRAS(V12)-mediated oncogenesis. We conclude that chronic inflammatory microenvironments in old age lead to reductions in the fitness of B cell progenitor populations. This reduced progenitor pool fitness engenders selection for cells harboring oncogenic mutations, in part due to their ability to correct aging-associated functional defects. Thus, modulation of inflammation--a common feature of aging--has the potential to limit aging-associated oncogenesis.
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10
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Aherne CM, Saeedi B, Collins CB, Masterson JC, McNamee EN, Perrenoud L, Rapp CR, Curtis VF, Bayless A, Fletcher A, Glover LE, Evans CM, Jedlicka P, Furuta GT, de Zoeten EF, Colgan SP, Eltzschig HK. Epithelial-specific A2B adenosine receptor signaling protects the colonic epithelial barrier during acute colitis. Mucosal Immunol 2015; 8:1324-38. [PMID: 25850656 PMCID: PMC4598274 DOI: 10.1038/mi.2015.22] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 02/17/2015] [Indexed: 02/04/2023]
Abstract
Central to inflammatory bowel disease (IBD) pathogenesis is loss of mucosal barrier function. Emerging evidence implicates extracellular adenosine signaling in attenuating mucosal inflammation. We hypothesized that adenosine-mediated protection from intestinal barrier dysfunction involves tissue-specific signaling through the A2B adenosine receptor (Adora2b) at the intestinal mucosal surface. To address this hypothesis, we combined pharmacologic studies and studies in mice with global or tissue-specific deletion of the Adora2b receptor. Adora2b(-/-) mice experienced a significantly heightened severity of colitis, associated with a more acute onset of disease and loss of intestinal epithelial barrier function. Comparison of mice with Adora2b deletion on vascular endothelial cells (Adora2b(fl/fl)VeCadCre(+)) or intestinal epithelia (Adora2b(fl/fl)VillinCre(+)) revealed a selective role for epithelial Adora2b signaling in attenuating colonic inflammation. In vitro studies with Adora2b knockdown in intestinal epithelial cultures or pharmacologic studies highlighted Adora2b-driven phosphorylation of vasodilator-stimulated phosphoprotein (VASP) as a specific barrier repair response. Similarly, in vivo studies in genetic mouse models or treatment studies with an Adora2b agonist (BAY 60-6583) recapitulate these findings. Taken together, our results suggest that intestinal epithelial Adora2b signaling provides protection during intestinal inflammation via enhancing mucosal barrier responses.
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Affiliation(s)
- CM Aherne
- Department of Anesthesiology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - B Saeedi
- Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - CB Collins
- Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Section of Pediatric Gastroenterology, Hepatology and Nutrition, Digestive Health Institute, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - JC Masterson
- Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Gastrointestinal Eosinophilic Diseases Program, Section of Pediatric Gastroenterology, Hepatology and Nutrition, Digestive Health Institute, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - EN McNamee
- Department of Anesthesiology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - L Perrenoud
- Department of Anesthesiology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - CR Rapp
- Department of Anesthesiology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - VF Curtis
- Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - A Bayless
- Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - A Fletcher
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - LE Glover
- Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - CM Evans
- Division of Pulmonary Sciences and Critical Care Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - P Jedlicka
- Department of Pathology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - GT Furuta
- Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Gastrointestinal Eosinophilic Diseases Program, Section of Pediatric Gastroenterology, Hepatology and Nutrition, Digestive Health Institute, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - EF de Zoeten
- Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA,Section of Pediatric Gastroenterology, Hepatology and Nutrition, Digestive Health Institute, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - SP Colgan
- Mucosal Inflammation Program, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - HK Eltzschig
- Department of Anesthesiology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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11
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Victorino F, Sojka DK, Brodsky KS, McNamee EN, Masterson JC, Homann D, Yokoyama WM, Eltzschig HK, Clambey ET. Tissue-Resident NK Cells Mediate Ischemic Kidney Injury and Are Not Depleted by Anti-Asialo-GM1 Antibody. J Immunol 2015; 195:4973-85. [PMID: 26453755 DOI: 10.4049/jimmunol.1500651] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 09/15/2015] [Indexed: 01/01/2023]
Abstract
NK cells are innate lymphoid cells important for immune surveillance, identifying and responding to stress, infection, and/or transformation. Whereas conventional NK (cNK) cells circulate systemically, many NK cells reside in tissues where they appear to be poised to locally regulate tissue function. In the present study, we tested the contribution of tissue-resident NK (trNK) cells to tissue homeostasis by studying ischemic injury in the mouse kidney. Parabiosis experiments demonstrate that the kidney contains a significant fraction of trNK cells under homeostatic conditions. Kidney trNK cells developed independent of NFIL3 and T-bet, and they expressed a distinct cell surface phenotype as compared with cNK cells. Among these, trNK cells had reduced asialo-GM1 (AsGM1) expression relative to cNK cells, a phenotype observed in trNK cells across multiple organs and mouse strains. Strikingly, anti-AsGM1 Ab treatment, commonly used as an NK cell-depleting regimen, resulted in a robust and selective depletion of cNKs, leaving trNKs largely intact. Using this differential depletion, we tested the relative contribution of cNK and trNK cells in ischemic kidney injury. Whereas anti-NK1.1 Ab effectively depleted both trNK and cNK cells and protected against ischemic/reperfusion injury, anti-AsGM1 Ab preferentially depleted cNK cells and failed to protect against injury. These data demonstrate unanticipated specificity of anti-AsGM1 Ab depletion on NK cell subsets and reveal a new approach to study the contributions of cNK and trNK cells in vivo. In total, these data demonstrate that trNK cells play a key role in modulating local responses to ischemic tissue injury in the kidney and potentially other organs.
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Affiliation(s)
- Francisco Victorino
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO 80045; Immunology Graduate Program, University of Colorado School of Medicine, Aurora, CO 80045
| | - Dorothy K Sojka
- Rheumatology Division, Washington University School of Medicine, St. Louis, MO 63110
| | - Kelley S Brodsky
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO 80045
| | - Eoin N McNamee
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO 80045
| | - Joanne C Masterson
- Gastrointestinal Eosinophilic Diseases Program, Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO 80045; Digestive Health Institute, Children's Hospital Colorado, Aurora, CO 80045; and
| | - Dirk Homann
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO 80045
| | - Wayne M Yokoyama
- Rheumatology Division, Washington University School of Medicine, St. Louis, MO 63110; Howard Hughes Medical Institute, Washington University School of Medicine, St. Louis, MO 63110
| | - Holger K Eltzschig
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO 80045
| | - Eric T Clambey
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO 80045;
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Keely S, Campbell EL, Baird AW, Hansbro PM, Shalwitz RA, Kotsakis A, McNamee EN, Eltzschig HK, Kominsky DJ, Colgan SP. Contribution of epithelial innate immunity to systemic protection afforded by prolyl hydroxylase inhibition in murine colitis. Mucosal Immunol 2014; 7:114-23. [PMID: 23695513 PMCID: PMC3772994 DOI: 10.1038/mi.2013.29] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 04/16/2013] [Indexed: 02/04/2023]
Abstract
Pharmacological stabilization of hypoxia-inducible factor (HIF) through prolyl hydroxylase (PHD) inhibition limits mucosal damage associated with models of murine colitis. However, little is known about how PHD inhibitors (PHDi) influence systemic immune function during mucosal inflammation or the relative importance of immunological changes to mucosal protection. We hypothesized that PHDi enhances systemic innate immune responses to colitis-associated bacteremia. Mice with colitis induced by trinitrobenzene sulfonic acid were treated with AKB-4924, a new HIF-1 isoform-predominant PHDi, and clinical, immunological, and biochemical endpoints were assessed. Administration of AKB-4924 led to significantly reduced weight loss and disease activity compared with vehicle controls. Treated groups were pyrexic but did not become subsequently hypothermic. PHDi treatment augmented epithelial barrier function and led to an approximately 50-fold reduction in serum endotoxin during colitis. AKB-4924 also decreased cytokines involved in pyrogenesis and hypothermia, significantly reducing serum levels of interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α while increasing IL-10. Treatment offered no protection against colitis in epithelial-specific HIF-1α-deficient mice, strongly implicating epithelial HIF-1α as the tissue target for AKB-4924-mediated protection. Taken together, these results indicate that inhibition of prolyl hydroxylase with AKB-4924 enhances innate immunity and identifies that the epithelium is a central site of inflammatory protection afforded by PHDi in murine colitis.
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Affiliation(s)
- Simon Keely
- School of Biomedical Sciences & Pharmacy, University of Newcastle, NSW, Australia,Hunter Medical Research Institute, John Hunter Hospital, NSW, Australia,Correspondence to: Simon Keely, Ph.D., School of Biomedical Sciences & Pharmacy, University of Newcastle, NSW, Australia. Office phone: (02) 40420229 Fax: (02) 4042 0024
| | - Eric L. Campbell
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, CO, 80045, USA
| | - Alan W. Baird
- School of Veterinary Medicine, University College Dublin, Ireland
| | - Philip M. Hansbro
- School of Biomedical Sciences & Pharmacy, University of Newcastle, NSW, Australia,Hunter Medical Research Institute, John Hunter Hospital, NSW, Australia
| | | | | | - Eoin N. McNamee
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, CO, 80045, USA
| | - Holger K. Eltzschig
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, CO, 80045, USA
| | - Douglas J. Kominsky
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, CO, 80045, USA
| | - Sean P. Colgan
- Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, CO, 80045, USA
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13
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Ehrentraut H, Clambey ET, McNamee EN, Brodsky KS, Ehrentraut SF, Poth JM, Riegel AK, Westrich JA, Colgan SP, Eltzschig HK. CD73+ regulatory T cells contribute to adenosine-mediated resolution of acute lung injury. FASEB J 2013; 27:2207-19. [PMID: 23413361 PMCID: PMC3659359 DOI: 10.1096/fj.12-225201] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [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: 12/03/2012] [Accepted: 02/04/2013] [Indexed: 12/22/2022]
Abstract
Acute lung injury (ALI) is characterized by alveolar injury and uncontrolled inflammation. Since most cases of ALI resolve spontaneously, understanding the endogenous mechanisms that promote ALI resolution is important to developing effective therapies. Previous studies have implicated extracellular adenosine signaling in tissue adaptation and wound healing. Therefore, we hypothesized a functional contribution for the endogenous production of adenosine during ALI resolution. As a model, we administered intratracheal LPS and observed peak lung injury at 3 d, with resolution by d 14. Treatment with pegylated adenosine-deaminase to enhance extracellular adenosine breakdown revealed impaired ALI resolution. Similarly, genetic deletion of cd73, the pacemaker for extracellular adenosine generation, was associated with increased mortality (0% wild-type and 40% in cd73(-/-) mice; P<0.05) and failure to resolve ALI adequately. Studies of inflammatory cell trafficking into the lungs during ALI resolution revealed that regulatory T cells (Tregs) express the highest levels of CD73. While Treg numbers in cd73(-/-) mice were similar to controls, cd73-deficient Tregs had attenuated immunosuppressive functions. Moreover, adoptive transfer of cd73-deficient Tregs into Rag(-/-) mice emulated the observed phenotype in cd73(-/-) mice, while transfer of wild-type Tregs was associated with normal ALI resolution. Together, these studies implicate CD73-dependent adenosine generation in Tregs in promoting ALI resolution.
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Affiliation(s)
- Heidi Ehrentraut
- Department of Anesthesiology and
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | | | | | | | - Stefan F. Ehrentraut
- Department of Medicine, Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA; and
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | - Jens M. Poth
- Department of Anesthesiology and
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | | | | | - Sean P. Colgan
- Department of Medicine, Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, Colorado, USA; and
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14
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Keely S, Baird A, Kominsky D, McNamee EN, Hansbro PM, Shalwitz RA, Colgan SP. Immune modulation by prolyl hydroxylase inhibition contributes to the prevention of endotoxemia in a murine model of inflammatory bowel disease. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.276.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Simon Keely
- School of Biomedical Sciences and PharmacyUniversity of NewcastleNewcastleAustralia
| | - Alan Baird
- School of Veterinary MedicineUniversity College DublinDublinIreland
| | | | - Eoin N McNamee
- Mucosal Inflammation ProgramUniversity of ColoradoDenverCO
| | - Philip M Hansbro
- School of Biomedical Sciences and PharmacyUniversity of NewcastleNewcastleAustralia
| | | | - Sean P Colgan
- Mucosal Inflammation ProgramUniversity of ColoradoDenverCO
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15
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Wermers JD, McNamee EN, Wurbel MA, Jedlicka P, Rivera-Nieves J. The chemokine receptor CCR9 is required for the T-cell-mediated regulation of chronic ileitis in mice. Gastroenterology 2011; 140:1526-35.e3. [PMID: 21300065 PMCID: PMC3086928 DOI: 10.1053/j.gastro.2011.01.044] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [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: 05/14/2010] [Revised: 12/24/2010] [Accepted: 01/20/2011] [Indexed: 12/17/2022]
Abstract
BACKGROUND & AIMS A balance between effector and regulatory T-cell (Treg) responses is required to maintain intestinal homeostasis. To regulate immunity, T cells migrate to the intestine using a combination of adhesion molecules and chemokine receptors. However, it is not known whether the migration pathways of effector cells and Tregs are distinct or shared. We sought to determine whether interaction between the chemokine receptor 9 (CCR9) and its ligand, chemokine ligand 25 (CCL25), allows effectors or Tregs to localize to chronically inflamed small intestine. METHODS By using a mouse model that develops Crohn's-like ileitis (tumor necrosis factor Δadenosine uracyl-rich element [TNFΔARE] mice) we examined the role of CCL25-CCR9 interactions for effector and Treg traffic using flow cytometry, quantitative reverse-transcription polymerase chain reaction, immunohistochemistry, immunoneutralization, and proliferation analyses. RESULTS In TNFΔARE mice, expression of CCL25 and the frequency of CCR9-expressing lymphocytes increased during late-stage disease. In the absence of CCR9, TNFΔARE mice developed exacerbated disease, compared with their CCR9-sufficient counterparts, which coincided with a deficiency of CD4(+)/CD25(+)/forkhead box P3(+) and CD8(+)/CD103(+) Tregs within the intestinal lamina propria and mesenteric lymph nodes. Furthermore, the CD8(+)/CCR9(+) subset decreased the proliferation of CD4(+) T cells in vitro. Administration of a monoclonal antibody against CCR9 to TNFΔARE mice exacerbated ileitis in vivo, confirming the regulatory role of CD8(+)/CCR9(+) cells. CONCLUSIONS Signaling of the chemokine CCL25 through its receptor CCR9 induces Tregs to migrate to the intestine. These findings raise concerns about the development of reagents to disrupt this pathway for the treatment of patients with Crohn's disease.
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Affiliation(s)
- Joshua D. Wermers
- Mucosal Inflammation Program, Department of Internal Medicine, Aurora, CO 80045
| | - Eoin N. McNamee
- Mucosal Inflammation Program, Department of Internal Medicine, Aurora, CO 80045
| | - Marc-André Wurbel
- Children's Hospital, Division of Gastroenterology/Nutrition, Boston, Massachusetts 02115
| | - Paul Jedlicka
- Department of Pathology, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045
| | - Jesús Rivera-Nieves
- Mucosal Inflammation Program, Department of Internal Medicine, Aurora, CO 80045
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16
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McNamee EN, Griffin ÉW, Ryan KM, Ryan KJ, Heffernan S, Harkin A, Connor TJ. Noradrenaline acting at β-adrenoceptors induces expression of IL-1β and its negative regulators IL-1ra and IL-1RII, and drives an overall anti-inflammatory phenotype in rat cortex. Neuropharmacology 2010; 59:37-48. [DOI: 10.1016/j.neuropharm.2010.03.014] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Revised: 03/23/2010] [Accepted: 03/24/2010] [Indexed: 10/19/2022]
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McNamee EN, Ryan KM, Griffin EW, González-Reyes RE, Ryan KJ, Harkin A, Connor TJ. Noradrenaline acting at central beta-adrenoceptors induces interleukin-10 and suppressor of cytokine signaling-3 expression in rat brain: implications for neurodegeneration. Brain Behav Immun 2010; 24:660-71. [PMID: 20193756 DOI: 10.1016/j.bbi.2010.02.005] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Revised: 02/21/2010] [Accepted: 02/21/2010] [Indexed: 11/27/2022] Open
Abstract
Evidence indicates that the monoamine neurotransmitter noradrenaline elicits anti-inflammatory actions in the central nervous system (CNS), and consequently may play a neuroprotective role where inflammatory events contribute to CNS pathology. Here we examined the ability of pharmacologically enhancing central noradrenergic tone to induce expression of anti-inflammatory cytokines in rat brain. Administration of the noradrenaline reuptake inhibitor reboxetine (15mg/kg; ip) combined with the alpha(2)-adrenoceptor antagonist idazoxan (1mg/kg; ip) induced interleukin-10 (IL-10) expression in rat cortex and hippocampus. In addition, these drug treatments induced IL-10 signaling as indicated by increased STAT3 phosphorylation and suppressor of cytokine signaling-3 (SOCS-3) mRNA expression. In contrast to the profound increase in IL-10 induced by the reboxetine/idazoxan combination, the other two broad spectrum anti-inflammatory cytokines IL-4 and TGF-beta were not induced by this treatment. The ability of combined treatment with reboxetine and idazoxan to induce IL-10 and SOCS3 expression was mediated by beta-adrenoceptor activation, as their induction was blocked by pre-treatment with the beta-adrenoceptor antagonist propranolol. Moreover, administration of the brain penetrant beta(2)-adrenoceptor agonist clenbuterol induced a time- and dose-dependent increase in central IL-10 and SOCS3 expression, and the ability of clenbuterol to induce IL-10 and SOCS-3 expression was blocked by the centrally acting beta-adrenoceptor antagonist, propranolol, and was mimicked by the highly selective beta(2)-adrenoceptor agonist formoterol. In all, these data indicate that increasing central noradrenergic tone induces IL-10 production and signaling in the CNS, which may protect against neurodegeneration.
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Affiliation(s)
- Eoin N McNamee
- Neuroimmunology Research Group, Trinity College Institute of Neuroscience, Department of Physiology & School of Medicine, Trinity College, Dublin 2, Ireland
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18
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McNamee EN, Wermers JD, Masterson JC, Collins CB, Lebsack MD, Fillon S, Robinson ZD, Grenawalt J, Lee JJ, Jedlicka P, Furuta GT, Rivera-Nieves J. Novel model of TH2-polarized chronic ileitis: the SAMP1 mouse. Inflamm Bowel Dis 2010; 16:743-52. [PMID: 19856411 PMCID: PMC3786705 DOI: 10.1002/ibd.21148] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BACKGROUND SAMP1/Yit mice develop spontaneous, segmental, transmural ileitis recapitulating many features of Crohn's disease (CD). The ileitic phenotype may have arisen during crosses of SAMP1 mice selected for the presence of skin lesions. We hereby describe that the original SAMP1 strain similarly develops ileitis. Our aim was to characterize the histopathological and immunological features of this model and assess its responsiveness to standard inflammatory bowel disease (IBD) therapy. METHODS The time course of histopathological features of ileitis was assessed. Immune compartments were characterized by flow cytometry. Ileal cytokine profiles and transcription factors were determined by real-time reverse-transcription polymerase chain reaction (RT-PCR). Finally, response to corticosteroid therapy and its effect on immune compartments and cellularity was evaluated. RESULTS Histological features and time course of disease were conserved, compared to those reported in SAMP1/Yit strains, with similar expansion of CD19+, CD4+, and CD8+ effector (CD44(high) CD62L(low)), and central memory lymphocytes (CD44(high)CD62L(high)). However, different from SAMP1/YitFc mice, analysis of ileal cytokine profiles revealed initial T(H)1 polarization followed by T(H)2-polarized profile accompanied by prominent eosinophilia during late disease. Lastly, corticosteroids attenuated ileitis, resulting in decreased lymphocyte subsets and cellularity of compartments. CONCLUSIONS Here we report that the ileitic phenotype of SAMP1-related strains was already present in the original SAMP1 strain. By contrast, the cytokine profile within the terminal ilea of SAMP1 is distinct from the mixed T(H)1/T(H)2 profile of SAMP1/YitFc mice during late disease, as it shows predominant T(H)2 polarization. Dissemination of these strains may advance our understanding of CD pathogenesis, which in 60% of patients involves the terminal ileum.
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Affiliation(s)
- Eoin N. McNamee
- Mucosal Inflammation Program, Division of Gastroenterology, University of Colorado Health Sciences Center, Denver
| | - Joshua D. Wermers
- Mucosal Inflammation Program, Division of Gastroenterology, University of Colorado Health Sciences Center, Denver
| | - Joanne C. Masterson
- Gastrointestinal Eosinophilic Disease Program, Section of Pediatric Gastroenterology, Hepatology and Nutrition, The Children’s Hospital, School of Medicine, University of Colorado, Denver
| | - Colm B. Collins
- Mucosal Inflammation Program, Division of Gastroenterology, University of Colorado Health Sciences Center, Denver
| | - Matthew D.P. Lebsack
- Mucosal Inflammation Program, Division of Gastroenterology, University of Colorado Health Sciences Center, Denver
| | - Sophie Fillon
- Gastrointestinal Eosinophilic Disease Program, Section of Pediatric Gastroenterology, Hepatology and Nutrition, The Children’s Hospital, School of Medicine, University of Colorado, Denver
| | - Zachary D. Robinson
- Gastrointestinal Eosinophilic Disease Program, Section of Pediatric Gastroenterology, Hepatology and Nutrition, The Children’s Hospital, School of Medicine, University of Colorado, Denver
| | - Joanna Grenawalt
- Gastrointestinal Eosinophilic Disease Program, Section of Pediatric Gastroenterology, Hepatology and Nutrition, The Children’s Hospital, School of Medicine, University of Colorado, Denver
| | - James J. Lee
- Division of Pulmonary Medicine, Department of Biochemistry and Molecular Biology, Mayo Clinic Arizona, Scottsdale, Arizona
| | - Paul Jedlicka
- Department of Pathology, University of Colorado, Denver
| | - Glenn T. Furuta
- Gastrointestinal Eosinophilic Disease Program, Section of Pediatric Gastroenterology, Hepatology and Nutrition, The Children’s Hospital, School of Medicine, University of Colorado, Denver
| | - Jesús Rivera-Nieves
- Mucosal Inflammation Program, Division of Gastroenterology, University of Colorado Health Sciences Center, Denver
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Affiliation(s)
- Colm B Collins
- Mucosal Inflammation Program, Division of Gastroenterology, Department of Internal Medicine, University of Colorado Health Sciences Center, Denver, Colorado 80045, USA
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McNamee EN, Ryan KM, Kilroy D, Connor TJ. Noradrenaline induces IL-1ra and IL-1 type II receptor expression in primary glial cells and protects against IL-1beta-induced neurotoxicity. Eur J Pharmacol 2009; 626:219-28. [PMID: 19818755 DOI: 10.1016/j.ejphar.2009.09.054] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2009] [Revised: 09/18/2009] [Accepted: 09/28/2009] [Indexed: 10/20/2022]
Abstract
The pro-inflammatory cytokine interleukin-1beta (IL-1beta) plays a key role in initiating an immune response within the central nervous system (CNS), and is thought to be a significant contributor to the neurodegenerative process. The actions of IL-1beta can be regulated by interleukin-1 receptor antagonist (IL-1ra), which prevents IL-1beta from acting on the IL-1 type I receptor (IL-1RI). Another negative regulator of the IL-1 system is the IL-1 type II receptor (IL-1RII); a decoy receptor that serves to sequester IL-1. Consequently, pharmacological strategies that tip the balance in favour of IL-1ra and IL-1RII may be of therapeutic benefit. Evidence suggests that the neurotransmitter noradrenaline elicits anti-inflammatory actions in the CNS, and consequently may play an endogenous neuroprotective role. Here we report that noradrenaline induces production of IL-1ra and IL-1RII from primary rat mixed glial cells. In contrast, noradrenaline did not alter IL-1beta expression, or expression of IL-1RI or the IL-1 type I receptor accessory protein (IL-1RAcp); both of which are required for IL-1 signalling. Our results demonstrate that the ability of noradrenaline to induce IL-1ra and IL-1RII is mediated via beta-adrenoceptor activation and downstream activation of protein kinase A and extracellular signal-regulated kinase (ERK). In parallel with its ability to increase IL-1ra and IL-1RII, noradrenaline prevented neurotoxicity in cortical primary neurons induced by conditioned medium from IL-1beta treated mixed glial cells. These data indicate that noradrenaline negatively regulates IL-1 system in glial cells and has neuroprotective properties in situations where IL-1 contributes to pathology.
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Affiliation(s)
- Eoin N McNamee
- Neuroimmunology Research Group, Department of Physiology, School of Medicine & Trinity College Institute of Neuroscience, Trinity College, Dublin 2, Ireland
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