1
|
Bell B, Flores-Lovon K, Cueva-Chicaña LA, Macedo R. Role of chemokine receptors in gastrointestinal mucosa. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2024; 388:20-52. [PMID: 39260937 DOI: 10.1016/bs.ircmb.2024.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
Chemokine receptors are essential for the immune response in the oral and gut mucosa. The gastrointestinal mucosa is characterized by the presence of immune populations because it is susceptible to inflammatory and infectious diseases, necessitating immune surveillance. Chemokine receptors are expressed on immune cells and play a role in gastrointestinal tissue-homing, although other non-immune cells also express them for various biological functions. CCR9, CXCR3 and CXCR6 play an important role in the T cell response in inflammatory and neoplastic conditions of the gastrointestinal mucosa. However, CXCR6 could also be found in gastric cancer cells, highlighting the different roles of chemokine receptors in different pathologies. On the other hand, CCR4 and CCR8 are critical for Treg migration in gastrointestinal tissues, correlating with poor prognosis in mucosal cancers. Other chemokine receptors are also important in promoting myeloid infiltration with context-dependent roles. Further, CXCR4 and CXCR7 are also present in gastrointestinal tumor cells and are known to stimulate proliferation, migration, and invasion into other tissues, among other pro-tumorigenic functions. Determining the processes underlying mucosal immunity and creating tailored therapeutic approaches for gastrointestinal diseases requires an understanding of the complex interactions that occur between chemokine receptors and their ligands in these mucosal tissues.
Collapse
Affiliation(s)
- Brett Bell
- Albert Einstein College of Medicine, New York, NY, United States
| | - Kevin Flores-Lovon
- Universidad Nacional de San Agustín de Arequipa, Arequipa, Peru; Grupo de Investigación en Inmunología (GII), Arequipa, Peru
| | - Luis A Cueva-Chicaña
- Universidad Nacional de San Agustín de Arequipa, Arequipa, Peru; Grupo de Investigación en Inmunología (GII), Arequipa, Peru
| | - Rodney Macedo
- Albert Einstein College of Medicine, New York, NY, United States; Grupo de Investigación en Inmunología (GII), Arequipa, Peru; Columbia Center for Translational Immunology, Department of Medicine, Columbia University Medical Center, New York, United States.
| |
Collapse
|
2
|
da Silva JL, Barbosa LV, Pinzan CF, Nardini V, Brigo IS, Sebastião CA, Elias-Oliveira J, Brazão V, Júnior JCDP, Carlos D, Cardoso CRDB. The Microbiota-Dependent Worsening Effects of Melatonin on Gut Inflammation. Microorganisms 2023; 11:microorganisms11020460. [PMID: 36838425 PMCID: PMC9962441 DOI: 10.3390/microorganisms11020460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/31/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023] Open
Abstract
Dysbiosis and disturbances in gut homeostasis may result in dysregulated responses, which are common in inflammatory bowel diseases (IBD). These conditions may be refractory to the usual treatments and novel therapies are still necessary to reach a more successful regulation of intestinal immunity. The hormone melatonin (MLT) has been raised as a therapeutic alternative because of its known interactions with immune responses and gut microbiota. Hence, we evaluated the effects of MLT in experimental colitis that evolves with intestinal dysbiosis, inflammation and bacterial translocation. C57BL/6 mice were exposed to dextran sulfate sodium and treated with MLT. In acute colitis, the hormone led to increased clinical, systemic and intestinal inflammatory parameters. During remission, continued MLT administration delayed recovery, increased TNF, memory effector lymphocytes and diminished spleen regulatory cells. MLT treatment reduced Bacteroidetes and augmented Actinobacteria and Verrucomicrobia phyla in mice feces. Microbiota depletion resulted in a remarkable reversion of the colitis phenotype after MLT administration, including a counter-regulatory immune response, reduction in TNF and colon macrophages. There was a decrease in Actinobacteria, Firmicutes and, most strikingly, Verrucomicrobia phylum in recovering mice. Finally, these results pointed to a gut-microbiota-dependent effect of MLT in the potentiation of intestinal inflammation.
Collapse
Affiliation(s)
- Jefferson Luiz da Silva
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto 14040-903, SP, Brazil
| | - Lia Vezenfard Barbosa
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto 14040-903, SP, Brazil
| | - Camila Figueiredo Pinzan
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto 14040-903, SP, Brazil
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-903, SP, Brazil
| | - Viviani Nardini
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto 14040-903, SP, Brazil
| | - Irislene Simões Brigo
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto 14040-903, SP, Brazil
| | - Cássia Aparecida Sebastião
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto 14040-903, SP, Brazil
| | - Jefferson Elias-Oliveira
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-903, SP, Brazil
| | - Vânia Brazão
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto 14040-903, SP, Brazil
| | - José Clóvis do Prado Júnior
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto 14040-903, SP, Brazil
| | - Daniela Carlos
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14040-903, SP, Brazil
| | - Cristina Ribeiro de Barros Cardoso
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, s/n, Ribeirão Preto 14040-903, SP, Brazil
- Correspondence: ; Tel.:+55-(16)-3315-0257; Fax: +55-(16)-3315-4725
| |
Collapse
|
3
|
Sung J, Sodhi CP, Voltaggio L, Hou X, Jia H, Zhou Q, Čiháková D, Hackam DJ. The recruitment of extra-intestinal cells to the injured mucosa promotes healing in radiation enteritis and chemical colitis in a mouse parabiosis model. Mucosal Immunol 2019; 12:503-517. [PMID: 30617302 PMCID: PMC6445662 DOI: 10.1038/s41385-018-0123-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 11/05/2018] [Accepted: 11/20/2018] [Indexed: 02/04/2023]
Abstract
Mucosal healing occurs through migration and proliferation of cells within injured epithelium, yet these processes may be inadequate for mucosal healing after significant injury where the mucosa is denuded. We hypothesize that extra-intestinal cells can contribute to mucosal healing after injury to the small and large intestine. We generated parabiotic pairs between wild-type and tdTomato mice, which were then subjected to radiation-induced enteritis and 2,4,6-trinitrobenzene sulfonic acid (TNBS)-induced colitis. We now show that as compared with singleton mice, mice with a parabiotic partner were protected against intestinal damage as revealed by significantly reduced weight loss, reduced expression of pro-inflammatory cytokines, reduced enterocyte apoptosis, and improved crypt proliferation. Donor cells expressed CD45-, Sca-1+, c-kit+, and CXCR4+ and accumulated around the injured crypts but did not transdifferentiate into epithelia, suggesting that extra-intestinal cells play a paracrine role in the healing response, while parabiotic pairings with Rag1-/- mice showed improved healing, indicating that adaptive immune cells were dispensable for mucosal healing. Strikingly, ablation of the bone marrow of the donor parabionts removed the protective effects. These findings reveal that the recruitment of extra-intestinal, bone marrow-derived cells into the injured intestinal mucosa can promote mucosal healing, suggesting novel therapeutic approaches for severe intestinal disease.
Collapse
Affiliation(s)
- J Sung
- Institute of Genetic Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - C P Sodhi
- Division of Pediatric Surgery, Johns Hopkins Children's Center and Department of Surgery, Baltimore, MD, USA
| | - L Voltaggio
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - X Hou
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - H Jia
- Division of Pediatric Surgery, Johns Hopkins Children's Center and Department of Surgery, Baltimore, MD, USA
| | - Q Zhou
- Division of Pediatric Surgery, Johns Hopkins Children's Center and Department of Surgery, Baltimore, MD, USA
| | - D Čiháková
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - D J Hackam
- Institute of Genetic Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD, USA.
- Division of Pediatric Surgery, Johns Hopkins Children's Center and Department of Surgery, Baltimore, MD, USA.
| |
Collapse
|
4
|
Pérez-Jeldres T, Tyler CJ, Boyer JD, Karuppuchamy T, Bamias G, Dulai PS, Boland BS, Sandborn WJ, Patel DR, Rivera-Nieves J. Cell Trafficking Interference in Inflammatory Bowel Disease: Therapeutic Interventions Based on Basic Pathogenesis Concepts. Inflamm Bowel Dis 2019; 25:270-282. [PMID: 30165490 PMCID: PMC6327230 DOI: 10.1093/ibd/izy269] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Indexed: 12/27/2022]
Abstract
After 20 years of successful targeting of pro-inflammatory cytokines for the treatment of IBD, an alternative therapeutic strategy has emerged, based on several decades of advances in understanding the pathogenesis of IBD. The targeting of molecules involved in leukocyte traffic has recently become a safe and effective alternative. With 2 currently approved drugs (ie, natalizumab, vedolizumab) and several others in phase 3 trials (eg, etrolizumab, ozanimod, anti-MAdCAM-1), the blockade of trafficking molecules has firmly emerged as a new therapeutic era for IBD. We discuss the targets that have been explored in clinical trials: chemokines and its receptors (eg, IP10, CCR9), integrins (eg, natalizumab, AJM300, vedolizumab, and etrolizumab), and its endothelial ligands (MAdCAM-1, ICAM-1). We also discuss a distinct strategy that interferes with lymphocyte recirculation by blocking lymphocyte egress from lymph nodes (small molecule sphingosine-phosphate receptor [S1PR] agonists: fingolimod, ozanimod, etrasimod, amiselimod). Strategies on the horizon include additional small molecules, allosteric inhibitors that specifically bind to the active integrin form and nanovectors that allow for the use of RNA interference in the quest to modulate pro-inflammatory leukocyte trafficking in IBD.
Collapse
Affiliation(s)
- Tamara Pérez-Jeldres
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
- Hospital San Borja Arriarán, Santiago, Chile
- Universidad Católica de Chile, Santiago, Chile
| | - Christopher J Tyler
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, San Diego, CA, USA
| | - Joshua D Boyer
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, San Diego, CA, USA
| | - Thangaraj Karuppuchamy
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, San Diego, CA, USA
| | - Giorgos Bamias
- GI Unit, 3rd Academic Department of Internal Medicine, National and Kapodistrian University of Athens, Sotiria Hospital, Athens, Greece
| | - Parambir S Dulai
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, San Diego, CA, USA
| | - Brigid S Boland
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
| | - William J Sandborn
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
| | - Derek R Patel
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
| | - Jesús Rivera-Nieves
- Inflammatory Bowel Disease Center, Division of Gastroenterology, University of California San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, San Diego, CA, USA
| |
Collapse
|
5
|
Calderón-Gómez E, Bassolas-Molina H, Mora-Buch R, Dotti I, Planell N, Esteller M, Gallego M, Martí M, Garcia-Martín C, Martínez-Torró C, Ordás I, Singh S, Panés J, Benítez-Ribas D, Salas A. Commensal-Specific CD4(+) Cells From Patients With Crohn's Disease Have a T-Helper 17 Inflammatory Profile. Gastroenterology 2016; 151:489-500.e3. [PMID: 27267052 DOI: 10.1053/j.gastro.2016.05.050] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 05/27/2016] [Accepted: 05/29/2016] [Indexed: 12/14/2022]
Abstract
BACKGROUND & AIMS Crohn's disease (CD) has been associated with an altered immune response to commensal microbiota, mostly based on increased seroreactivity to microbial proteins. Although T cells are believed to contribute to the development of CD, little is known about the antigens involved. We investigated the antigen-specificity of T cells isolated from patients with CD. METHODS We isolated peripheral blood mononuclear cells from 65 patients with CD and 45 healthy individuals (controls). We investigated T-cell reactivity to commensal microbial antigens using proliferation assays (based on thymidine incorporation and carboxyfluorescein succinimidyl ester dilution). Gene expression patterns were determined using microarray and real-time polymerase chain reaction analyses. Cytokines, chemokines, and antibodies were measured by enzyme-linked immunosorbent assay, flow cytometry, or multiplex cytokine assays. Intestinal crypts were obtained from surgical resection specimens of 7 individuals without inflammatory bowel disease. We examined the effects of commensal-specific CD4(+) T cells on primary intestinal epithelial cells from these samples. RESULTS The bacterial proteins FlaX, A4-fla2, and YidX increased proliferation of CD4(+) T cells isolated from peripheral blood of patients with CD compared with controls. In blood samples from controls, CD4(+) T cells specific for FlaX, A4-fla2, or YidX had a T-helper (Th)1 phenotype; a larger proportion of CD4(+) T cells specific for these proteins in patients with CD had a Th17 phenotype or produced Th1 and Th17 cytokines. When supernatants collected from commensal-specific CD4(+) T cells from patients with CD were applied to healthy intestinal epithelial cells, the epithelial cells increased the expression of the chemokine (C-X-C motif) ligand 1 (CXCL1), CXCL8 and the CC chemokine ligand 20 (CCL20). CONCLUSIONS A larger proportion of commensal-specific CD4(+) T cells from patients with CD have a Th17 phenotype or produce Th1 and Th17 cytokines, compared with T cells from controls; this might contribute to intestinal inflammation in patients with CD. These cells might be targeted for treatment of CD. The transcriptional data of commensal-specific CD4(+) T cells from healthy individuals and CD patients have been deposited in the Gene Expression Omnibus at the National Center for Biotechnology Information (accession no: GSE70469).
Collapse
Affiliation(s)
- Elisabeth Calderón-Gómez
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Helena Bassolas-Molina
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Rut Mora-Buch
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Isabella Dotti
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Núria Planell
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain; Bioinformatics Platform, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Míriam Esteller
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Marta Gallego
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Mercè Martí
- Laboratory of Cellular Immunology, Institute of Biotechnology and Biomedicine, Autonomous University of Barcelona, Bellaterra, Barcelona, Spain
| | - Carme Garcia-Martín
- Laboratory of Cellular Immunology, Institute of Biotechnology and Biomedicine, Autonomous University of Barcelona, Bellaterra, Barcelona, Spain
| | - Carlos Martínez-Torró
- Laboratory of Cellular Immunology, Institute of Biotechnology and Biomedicine, Autonomous University of Barcelona, Bellaterra, Barcelona, Spain
| | - Ingrid Ordás
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Sharat Singh
- Department of Research and Development, Prometheus Laboratories, San Diego, California
| | - Julian Panés
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Daniel Benítez-Ribas
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Azucena Salas
- Department of Gastroenterology, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain.
| |
Collapse
|
6
|
Martinu T, Kinnier CV, Sun J, Kelly FL, Nelson ME, Garantziotis S, Foster WM, Palmer SM. Allogeneic splenocyte transfer and lipopolysaccharide inhalations induce differential T cell expansion and lung injury: a novel model of pulmonary graft-versus-host disease. PLoS One 2014; 9:e97951. [PMID: 24844383 PMCID: PMC4028236 DOI: 10.1371/journal.pone.0097951] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 04/26/2014] [Indexed: 12/31/2022] Open
Abstract
Background Pulmonary GVHD (pGVHD) is an important complication of hematopoietic cell transplant (HCT) and is thought to be a consequence of the HCT conditioning regimen, allogeneic donor cells, and posttransplant lung exposures. We have previously demonstrated that serial inhaled lipopolysaccharide (LPS) exposures potentiate the development of pGVHD after murine allogeneic HCT. In the current study we hypothesized that allogeneic lymphocytes and environmental exposures alone, in the absence of a pre-conditioning regimen, would cause features of pGVHD and would lead to a different T cell expansion pattern compared to syngeneic cells. Methods Recipient Rag1−/− mice received a transfer of allogeneic (Allo) or syngeneic (Syn) spleen cells. After 1 week of immune reconstitution, mice received 5 daily inhaled LPS exposures and were sacrificed 72 hours after the last LPS exposure. Lung physiology, histology, and protein levels in bronchoalveolar lavage (BAL) were assessed. Lung cells were analyzed by flow cytometry. Results Both Allo and Syn mice that undergo LPS exposures (AlloLPS and SynLPS) have prominent lymphocytic inflammation in their lungs, resembling pGVHD pathology, not seen in LPS-unexposed or non-transplanted controls. Compared to SynLPS, however, AlloLPS have significantly increased levels of BAL protein and enhancement of airway hyperreactivity, consistent with more severe lung injury. This injury in AlloLPS mice is associated with an increase in CD8 T cells and effector CD4 T cells, as well as a decrease in regulatory to effector CD4 T cell ratio. Additionally, cytokine analysis is consistent with a preferential Th1 differentiation and upregulation of pulmonary CCL5 and granzyme B. Conclusions Allogeneic lymphocyte transfer into lymphocyte-deficient mice, followed by LPS exposures, causes features of pGVHD and lung injury in the absence of a pre-conditioning HCT regimen. This lung disease associated with an expansion of allogeneic effector T cells provides a novel model to dissect mechanisms of pGVHD independent of conditioning.
Collapse
Affiliation(s)
- Tereza Martinu
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
- * E-mail:
| | - Christine V. Kinnier
- Department of General Surgery, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Jesse Sun
- School of medicine, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Francine L. Kelly
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Margaret E. Nelson
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Stavros Garantziotis
- Respiratory Biology Branch, National Institutes of Environmental Health Sciences, Research Triangle Park, North Carolina, United States of America
| | - W. Michael Foster
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | - Scott M. Palmer
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| |
Collapse
|
7
|
Dooms H. Interleukin-7: Fuel for the autoimmune attack. J Autoimmun 2013; 45:40-8. [PMID: 23831438 DOI: 10.1016/j.jaut.2013.06.007] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Accepted: 06/12/2013] [Indexed: 01/19/2023]
Abstract
Interleukin-7 (IL-7) is a critical survival factor for lymphocytes and recent studies suggest targeting the IL-7/IL-7Rα pathway holds promise for the treatment of autoimmune diseases. Several lines of evidence, genetic as well as functional, indicate an important role for this cytokine in autoimmune inflammation: polymorphisms in the IL-7Rα have been associated with increased risk for autoimmune disease and blocking IL-7/IL-7Rα with antibodies showed therapeutic efficacy in several autoimmune mouse models. Insights are starting to emerge about the mechanisms underlying IL-7's role in autoimmunity and tolerance, revealing surprising novel functions beyond its traditional activity as a T cell survival factor. In the first part of this review, the functions of IL-7 in the immune system are concisely described, providing a basis for understanding their potential role in promoting autoimmune responses. In the second part, current knowledge about the role of IL-7 in various autoimmune conditions is reviewed.
Collapse
Affiliation(s)
- Hans Dooms
- Department of Medicine, Arthritis Center/Rheumatology Section, Boston University School of Medicine, 72 East Concord Street, E519, Boston, MA 02118, USA.
| |
Collapse
|
8
|
McCabe LR, Irwin R, Schaefer L, Britton RA. Probiotic use decreases intestinal inflammation and increases bone density in healthy male but not female mice. J Cell Physiol 2013; 228:1793-8. [PMID: 23389860 DOI: 10.1002/jcp.24340] [Citation(s) in RCA: 188] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 01/28/2013] [Indexed: 12/31/2022]
Abstract
Osteoporosis can result from intestinal inflammation, as is seen with inflammatory bowel disease. Probiotics, microorganisms that provide a health benefit to the host when ingested in adequate amounts, can have anti-inflammatory properties and are currently being examined to treat inflammatory bowel disease. Here, we examined if treating healthy male mice with Lactobacillus reuteri ATCC PTA 6475 (a candidate probiotic with anti-TNFα activity) could affect intestinal TNFα levels and enhance bone density. Adult male mice were given L. reuteri 6475 orally by gavage for 3×/week for 4 weeks. Examination of jejunal and ileal RNA profiles indicates that L. reuteri suppressed basal TNFα mRNA levels in the jejunum and ileum in male mice, but surprisingly not in female mice. Next, we examined bone responses. Micro-computed tomography demonstrated that L. reuteri 6475 treatment increased male trabecular bone parameters (mineral density, bone volume fraction, trabecular number, and trabecular thickness) in the distal femur metaphyseal region as well as in the lumbar vertebrae. Cortical bone parameters were unaffected. Dynamic and static histomorphometry and serum remodeling parameters indicate that L. reuteri ingestion increases osteoblast serum markers and dynamic measures of bone formation in male mice. In contrast to male mice, L. reuteri had no effect on bone parameters in female mice. Taken together our studies indicate that femoral and vertebral bone formation increases in response to oral probiotic use, leading to increased trabecular bone volume in male mice.
Collapse
Affiliation(s)
- Laura R McCabe
- Department of Physiology, Michigan State University, East Lansing, Michigan 48824, USA.
| | | | | | | |
Collapse
|
9
|
Mandai Y, Takahashi D, Hase K, Obata Y, Furusawa Y, Ebisawa M, Nakagawa T, Sato T, Katsuno T, Saito Y, Shimaoka T, Yokosuka O, Yokote K, Ohno H. Distinct Roles for CXCR6(+) and CXCR6(-) CD4(+) T Cells in the Pathogenesis of Chronic Colitis. PLoS One 2013; 8:e65488. [PMID: 23840334 PMCID: PMC3686755 DOI: 10.1371/journal.pone.0065488] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 04/25/2013] [Indexed: 12/17/2022] Open
Abstract
CD4+ T cells play a central role in the development of inflammatory bowel disease (IBD) via high-level production of effector cytokines such as IFN-γ and TNF-α. To better characterize the colitogenic CD4+ T cells, we examined their expression of CXCR6, a chemokine receptor that is expressed by T cells upon activation and is upregulated in several inflammatory diseases. We found that 80% of colonic lamina propria CD4+ T cells expressed CXCR6 in the CD45RBhigh T cell-transferred colitis model. CXCR6 expression was similarly upregulated in inflamed mucosa of patients with Crohn’s disease. Although surface marker analysis demonstrated that both CXCR6+ and CXCR6− CD4+ T-cell subsets consist of the cells with effector and effector-memory cells, the more cells in the CXCR6+ subset produced IFN-γ and TNF-α compared to CXCR6− subset, and only the CXCR6+ subset produced IL-17A. Nevertheless, adoptive retransfer of lamina propria CXCR6+ T cells into Rag1−/− recipients failed to induce the disease due to limited expansion of the transferred cells. By contrast, retransfer of CXCR6− cells evoked colitis similar to that observed in CD4+CD45RBhigh T cell-transferred mice, and resulted in their conversion into CXCR6+ cells. Collectively, these observations suggest that the CXCR6+CD4+ T-cell subset consists of terminally differentiated effector cells that serve as the major source of effector cytokines in the inflamed tissue, whereas CXCR6−CD4+ T-cell subset serves as a colitogenic memory compartment that retains the ability to proliferate and differentiate into CXCR6+CD4+ T cells.
Collapse
Affiliation(s)
- Yasushi Mandai
- Department of Clinical Cell Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
- Laboratory for Epithelial Immunobiology, Research Center for Allergy and Immunology, RIKEN Yokohama Institute, Yokohama, Kanagawa, Japan
| | - Daisuke Takahashi
- Laboratory for Epithelial Immunobiology, Research Center for Allergy and Immunology, RIKEN Yokohama Institute, Yokohama, Kanagawa, Japan
- Division of Immunobiology, Department of Supramolecular Biology, Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Koji Hase
- Laboratory for Bioenvironmental Epigenetics, Research Center for Allergy and Immunology, RIKEN Yokohama Institute, Yokohama, Kanagawa, Japan
- Division of Mucosal Barriology, International Research and Development Center for mucosal vaccines, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
- * E-mail: (KH); (HO)
| | - Yuuki Obata
- Department of Immune Regulation, Graduate School of Medicine, Chiba University, Chiba, Japan
- Laboratory for Bioenvironmental Epigenetics, Research Center for Allergy and Immunology, RIKEN Yokohama Institute, Yokohama, Kanagawa, Japan
| | - Yukihiro Furusawa
- Laboratory for Bioenvironmental Epigenetics, Research Center for Allergy and Immunology, RIKEN Yokohama Institute, Yokohama, Kanagawa, Japan
- Division of Mucosal Barriology, International Research and Development Center for mucosal vaccines, The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - Masashi Ebisawa
- Laboratory for Epithelial Immunobiology, Research Center for Allergy and Immunology, RIKEN Yokohama Institute, Yokohama, Kanagawa, Japan
- Division of Immunobiology, Department of Supramolecular Biology, Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa, Japan
| | - Tomoo Nakagawa
- Department of Clinical Cell Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Toru Sato
- Department of Clinical Cell Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tatsuro Katsuno
- Department of Clinical Cell Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yasushi Saito
- Department of Clinical Cell Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takeshi Shimaoka
- Department of Molecular Preventive Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Osamu Yokosuka
- Department of Medicine and Clinical Oncology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Kotaro Yokote
- Department of Clinical Cell Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroshi Ohno
- Department of Immune Regulation, Graduate School of Medicine, Chiba University, Chiba, Japan
- Laboratory for Epithelial Immunobiology, Research Center for Allergy and Immunology, RIKEN Yokohama Institute, Yokohama, Kanagawa, Japan
- Division of Immunobiology, Department of Supramolecular Biology, Graduate School of Nanobioscience, Yokohama City University, Yokohama, Kanagawa, Japan
- * E-mail: (KH); (HO)
| |
Collapse
|
10
|
Abstract
Human soluble interleukin-7 receptor (sIL7R)α circulates in high molar excess compared with IL-7, but its biology remains unclear. We demonstrate that sIL7Rα has moderate affinity for IL-7 but does not bind thymic stromal lymphopoietin. Functionally, sIL7Rα competes with cell-associated IL-7 receptor to diminish excessive IL-7 consumption and, thus, enhances the bioactivity of IL-7 when the cytokine is limited, as it is presumed to be in vivo. IL-7 signaling in the presence of sIL7Rα also diminishes expression of CD95 and suppressor of cytokine signaling 1, both regulatory molecules. Murine models confirm diminished consumption of IL-7 in the presence of sIL7Rα and also demonstrate a potentiating effect of sIL7Rα on IL-7-mediated homeostatic expansion and experimental autoimmune encephalomyelitis exacerbation. In multiple sclerosis and several other autoimmune diseases, IL7R genotype influences susceptibility. We measured increased sIL7Rα levels, as well as increased IL-7 levels, in multiple sclerosis patients with the predisposing IL7R genotype, consistent with diminished IL-7 consumption in vivo. This work demonstrates that sIL7Rα potentiates IL-7 bioactivity and provides a basis to explain the increased risk of autoimmunity observed in individuals with genotype-induced elevations of sIL7Rα.
Collapse
|
11
|
Doherty GA, Bai A, Hanidziar D, Longhi MS, Lawlor GO, Putheti P, Csizmadia E, Nowak M, Cheifetz AS, Moss AC, Robson SC. CD73 is a phenotypic marker of effector memory Th17 cells in inflammatory bowel disease. Eur J Immunol 2013; 42:3062-72. [PMID: 22965858 DOI: 10.1002/eji.201242623] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Purinergic signaling and associated ectonucleotidases, such as CD39 and CD73, have been implicated in the pathogenesis of inflammatory bowel disease (IBD). CD39 is known to be a Treg memory cell marker, and here we determine the phenotype and function of CD73(+) CD4(+) T lymphocytes in patients with IBD. We describe elevated levels of CD73(+) CD4(+) T cells in the peripheral blood and intestinal lamina propria of patients with active IBD. The functional phenotype of these CD73(+) CD4(+) T cells was further determined by gene expression, ecto-enzymatic activity, and suppressive assays. Increased numbers of CD73(+) CD4(+) T cells in the periphery and lamina propria were noted during active inflammation, which returned to baseline levels following anti-TNF treatment. Peripheral CD73(+) CD4(+) T cells predominantly expressed CD45RO, and were enriched with IL-17A(+) cells. The CD73(+) CD4(+) cell population expressed higher levels of RORC, IL-17A, and TNF, and lower levels of FOXP3 and/or CD25, than CD73(-) CD4(+) T cells. Expression of CD73 by peripheral CD4(+) T cells was increased by TNF, and decreased by an anti-TNF monoclonal antibody (infliximab). In vitro, these peripheral CD73(+) CD4(+) T cells did not suppress proliferation of CD25(-) effector cells, and expressed higher levels of pro-inflammatory markers. We conclude that the CD73(+) CD4(+) T-cell population in patients with active IBD are enriched with cells with a T-helper type 17 phenotype, and could be used to monitor disease activity during treatment.
Collapse
Affiliation(s)
- Glen A Doherty
- Division of Gastroenterology, Beth Israel Deaconess Medical Center & Harvard Medical School, Boston, MA 02215, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Hisamatsu T, Kanai T, Mikami Y, Yoneno K, Matsuoka K, Hibi T. Immune aspects of the pathogenesis of inflammatory bowel disease. Pharmacol Ther 2013; 137:283-97. [PMID: 23103332 DOI: 10.1016/j.pharmthera.2012.10.008] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 10/11/2012] [Indexed: 12/11/2022]
Abstract
Although the precise etiologies of inflammatory bowel disease (IBD) (ulcerative colitis and Crohn's disease) remain obscure, several reports have indicated that dysfunction of the mucosal immune system plays an important role in its pathogenesis. Recent progress with genome-wide association studies has identified many IBD susceptibility genes. In individuals with genetic risk, abnormal interactions between the host immune system and gut flora, and dysregulation of cellular responses such as autophagy and ER stress, induce an abnormal host immune response in the gut resulting in intestinal inflammation. Research progress animal models in IBD, and in human IBD, has identified several key molecules in IBD pathogenesis such as TNFα and adhesion molecules, and molecular targeting therapies based on these molecules have been developed. Here, we review immunological aspects in IBD pathogenesis and the development of immunoregulatory therapy.
Collapse
Affiliation(s)
- Tadakazu Hisamatsu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
13
|
Koscielny A, Engel D, Maurer J, Wehner S, Kurts C, Kalff JC. The role of lymphoid tissue in the attenuation of the postoperative ileus. Am J Physiol Gastrointest Liver Physiol 2013; 304:G401-12. [PMID: 23238935 DOI: 10.1152/ajpgi.00161.2012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Standardized intestinal manipulation (IM) leads to local bowel wall inflammation subsequently spreading over the entire gastrointestinal tract. Previously, we demonstrated that this so-called gastrointestinal field effect (FE) is immune-mediated. The aim of this study was to investigate the role of secondary lymphoid organs [mesenteric lymph nodes (MLN), gut-associated lymphoid tissue (GALT)] in IM-mediated FE by employing mice with deficient secondary lymphoid organs (aly/aly, MLN ex) or by administration of 2-amino-2-[2-(4-octylphenyl)ethyl]-1,3-propanediol (FTY720), an immunomodulating agent that inhibits emigration of lymphocytes out of lymphoid organs. Small bowel muscularis, and colonic muscularis from wild-type mice as control, from aly/aly mice, FTY720-treated mice (daily dose of 1.0 mg/kg mouse ip starting 3 days before surgical procedure), and wild-type mice that had undergone removal of mesenteric lymph nodes before IM (MLN ex mice) were obtained after selective IM of the jejunum or sham operation. FE was analyzed by measuring transit time of orally administered fluorescent dextran in the gastrointestinal tract [geometric center (GC) of fluorescent dextran], colonic transit time, infiltration of myeloperoxidase-positive cells, and circular smooth muscle contractility. Furthermore, mRNA levels of inflammatory cytokines [interleukin (IL)-6, tumor necrosis factor (TNF)-α, macrophage inflammatory protein (MIP)-1α] were determined by Taqman-PCR. We observed a significantly reduced upregulation of proinflammatory cytokines (IL-6, TNF-α, MIP-1α) in colonic muscularis of MLN ex mice, aly/aly mice, and FTY720-treated mice compared with wild-type mice. Contractility of circular muscularis strips of the colon but not the jejunum was significantly improved in aly/aly mice and FTY720-treated wild-type mice. Additionally, inflammation of the colon determined by the number of myeloperoxidase-positive cells and colonic transit time were significantly improved in aly/aly mice, FTY720-treated wild-type mice, and in MLN ex mice. In summary, lack of secondary lymphoid organs (MLN + GALT) in aly/aly mice or administration of FTY720 abrogated FE after IM as opposed to wild-type mice. These data demonstrate that secondary lymphoid organs are involved in the propagation of FE and postoperative ileus. FTY720 indirectly affects FE by inhibiting migration of activated T cells from the jejunum and adjacent secondary lymphoid organs to the colon. These findings support the crucial role of the adaptive immune system in FE, most likely by a sphyngosine 1-phosphate-dependent mechanism.
Collapse
Affiliation(s)
- A Koscielny
- Department of Surgery, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany.
| | | | | | | | | | | |
Collapse
|
14
|
Ancelet L, Rich FJ, Delahunt B, Kirman JR. Dissecting memory T cell responses to TB: concerns using adoptive transfer into immunodeficient mice. Tuberculosis (Edinb) 2012; 92:422-33. [PMID: 22738879 DOI: 10.1016/j.tube.2012.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Revised: 05/10/2012] [Accepted: 05/11/2012] [Indexed: 02/02/2023]
Abstract
Several studies have used adoptive transfer of purified T cell subsets into immunodeficient mice to determine the subset of T cells responsible for mediating protection against Mycobacterium tuberculosis. These studies suggested that CD62L(hi) memory CD4(+) T cells from BCG-vaccinated mice are key for protection against tuberculosis. Importantly, we observed that transfer of naïve CD4(+) T cells into Rag1-/- recipients protected against a mycobacterial challenge as well as transfer of BCG-experienced CD4(+) T cells. We found that transfer of total CD4(+) T cells from naïve mice or enriched CD62L(hi)CD4(+) T cells from BCG-vaccinated mice into Rag1-/- recipients induced severe colitis by 3 weeks post cell transfer, whereas transfer of CD62L(lo)CD4(+) T cells from BCG-vaccinated mice did not. Naïve and CD62L(hi)CD4(+) T cells proliferated extensively upon transfer and developed an activated effector phenotype in the lung, even in the absence of infectious challenge. The induction of colitis and systemic cytokine response induced by the transfer and subsequent activation of CD4(+) T cells from naïve mice or CD62L(hi)CD4(+) T cells from BCG-vaccinated mice, into immunodeficient recipients, may heighten their ability to protect against mycobacterial challenge. This raises doubts about the validity of this model to study CD4(+) T cell-mediated protection against tuberculosis.
Collapse
Affiliation(s)
- Lindsay Ancelet
- Infectious Diseases Group, Malaghan Institute of Medical Research, PO Box 7060, Newtown, Wellington 6242, New Zealand.
| | | | | | | |
Collapse
|
15
|
Engel DR, Koscielny A, Wehner S, Maurer J, Schiwon M, Franken L, Schumak B, Limmer A, Sparwasser T, Hirner A, Knolle PA, Kalff JC, Kurts C. T helper type 1 memory cells disseminate postoperative ileus over the entire intestinal tract. Nat Med 2010; 16:1407-13. [PMID: 21113155 DOI: 10.1038/nm.2255] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2010] [Accepted: 10/06/2010] [Indexed: 01/01/2023]
Abstract
Localized abdominal surgery can lead to disruption of motility in the entire gastrointestinal tract (postoperative ileus). Intestinal macrophages produce mediators that paralyze myocytes, but it is unclear how the macrophages are activated, especially those in unmanipulated intestinal areas. Here we show that intestinal surgery activates intestinal CD103(+)CD11b(+) dendritic cells (DCs) to produce interleukin-12 (IL-12). This promotes interferon-γ (IFN-γ) secretion by CCR9(+) memory T helper type 1 (T(H)1) cells which activates the macrophages. IL-12 also caused some T(H)1 cells to migrate from surgically manipulated sites through the bloodstream to unmanipulated intestinal areas where they induced ileus. Preventing T cell migration with the drug FTY720 or inhibition of IL-12, T-bet (T(H)1-specific T box transcription factor) or IFN-γ prevented postoperative ileus. CCR9(+) T(H)1 memory cells were detected in the venous blood of subjects 1 h after abdominal surgery. These findings indicate that postoperative ileus is a T(H)1 immune-mediated disease and identify potential targets for disease monitoring and therapy.
Collapse
Affiliation(s)
- Daniel R Engel
- Institutes for Molecular Medicine and Experimental Immunology, University Clinic of Bonn, Bonn, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Takada Y, Hisamatsu T, Kamada N, Kitazume MT, Honda H, Oshima Y, Saito R, Takayama T, Kobayashi T, Chinen H, Mikami Y, Kanai T, Okamoto S, Hibi T. Monocyte chemoattractant protein-1 contributes to gut homeostasis and intestinal inflammation by composition of IL-10-producing regulatory macrophage subset. THE JOURNAL OF IMMUNOLOGY 2010; 184:2671-6. [PMID: 20107182 DOI: 10.4049/jimmunol.0804012] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Lamina propria macrophages (LPMs) spontaneously produce large amounts of anti-inflammatory IL-10 and play a central role in regulation of immune responses against commensal bacteria. MCP-1 is a chemokine that plays an important role in recruitment of monocytes and macrophages to inflamed tissues. We demonstrated that, in addition to IL-10, LPMs produced large amounts of MCP-1, even in a steady state. MCP-1 deficiency caused impaired IL-10 production by LPMs and led to exacerbation of dextran sulfate sodium-induced acute colitis. As an explanation of this impaired IL-10 production by LPMs, we found that LPMs could be separated into two subsets with distinct side-scattered properties, namely LPM1 (CD11b(+)F4/80(+)CD11c(-)SSC(hi)) and LPM2 (CD11b(+)F4/80(+)CD11c(-)SSC(lo)). Unlike LPM1, the LPM2 subset migrated in response to MCP-1 and produced a larger amount of IL-10 in response to commensal bacteria. LPMs isolated from MCP-1-deficient mice produced less IL-10 as a consequence of the lack of the MCP-1-dependent LPM2 population. This imbalanced composition in LPM population may be involved in the susceptibility to DSS-induced colitis in MCP-1-deficient mice. Our results suggest that endogenous MCP-1 contributes to the composition of resident LPM subsets in the intestine. Moreover, MCP-1-dependent LPM2 subset may play an important role in maintenance of gut homeostasis in the steady state, and in the termination of excess inflammatory responses in the intestine, by producing IL-10.
Collapse
Affiliation(s)
- Yasuhiro Takada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Fujii T, Watanabe M. [An additional role of FTY720 in chronic colitis]. NIHON RINSHO MEN'EKI GAKKAI KAISHI = JAPANESE JOURNAL OF CLINICAL IMMUNOLOGY 2009; 32:7-14. [PMID: 19252372 DOI: 10.2177/jsci.32.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
FTY720 is a sphingosine-1-phosphate receptor modulator, which inhibits T-cell egress from lymph nodes, thereby prevents pathogenic T cells from migrating towards disease sites. In inflammatory bowel diseases, it is thought that colitogenic memory CD4+ T cells are intermittently reactivated in regional lymphoid organs, and return to inflammatory tissues. Little is known about how FTY720 controls the migration property of memory T cells and whether FTY720 could control the trafficking of T cells without the presence of lymphoid tissues. First, we here demonstrated that FTY720 prevents the development of colitis induced by the adoptive transfer of colitogenic lamina propria effector-memory CD4+ T (T(EM)) cells into SCID mice. Next, We demonstrated that FTY720 treatment suppresses the recirculation of CD4(+) T cells in splenectomized lymphotoxin-alpha(-/-) mice that lack lymph nodes and spleen. Cell number of CD4+ T cells was markedly decreased in peripheral blood of FTY720-treated mice, but conversely increased in bone marrow. Notably, FTY720 treatment prevented the development of colitis induced by transfer of colitogenic T(EM) cells into SPX LT-a(-/-) x RAG-2(-/-) mice. Collectively, the present data indicate that FTY720 treatment may offer an additional role to direct trafficking of CD4+ T cells in BM, resulting in the prevention of memory T cell-mediated diseases including inflammatory bowel diseases.
Collapse
Affiliation(s)
- Toshimitsu Fujii
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University
| | | |
Collapse
|
18
|
Systemically Circulating Colitogenic Memory CD4+T Cells May Be an Ideal Target for the Treatment of Inflammatory Bowel Diseases. Keio J Med 2009; 58:203-9. [DOI: 10.2302/kjm.58.203] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
19
|
Di Rosa F. T-lymphocyte interaction with stromal, bone and hematopoietic cells in the bone marrow. Immunol Cell Biol 2008; 87:20-9. [PMID: 19030018 DOI: 10.1038/icb.2008.84] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mature T cells in the bone marrow (BM) are in constant exchange with the blood pool. Within the BM, T-cell recognition of antigen presented by dendritic cell (DC) can occur, nevertheless it is thought that BM T cells mostly receive non-antigenic signals by either stimulatory, for example, interleukin (IL)-7, IL-15, tumor necrosis factor family members, or inhibitory molecules, for example, transforming growth factor-beta. The net balance is in favor of T-cell proliferation. Indeed, the percentage of proliferating T cells is higher in the BM than in spleen and lymph nodes, both within CD4 and CD8 T cells. High numbers of memory T cells proliferate in the BM, as they preferentially home to the BM and have an increased turnover as compared with naive T cells. I propose here that the BM plays an essential role in maintaining normal peripheral T-lymphocyte numbers and antigen-specific memory for both CD4 and CD8 T cells. I also discuss BM T-cell contribution to the homeostasis of bone metabolism as well as of hematopoiesis. It emerges that BM T cells play unexpected roles in several diseases, for example AIDS and osteoporosis. A better knowledge on BM T cells has implications for currently used clinical interventions, for example, vaccination, BM transplantation, mesenchymal stem cell-based therapies.
Collapse
Affiliation(s)
- Francesca Di Rosa
- Institute of Molecular Biology and Pathology, Consiglio Nazionale delle Ricerche, Rome, Italy.
| |
Collapse
|