1
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Filippone RT, Dargahi N, Eri R, Uranga JA, Bornstein JC, Apostolopoulos V, Nurgali K. Potent CCR3 Receptor Antagonist, SB328437, Suppresses Colonic Eosinophil Chemotaxis and Inflammation in the Winnie Murine Model of Spontaneous Chronic Colitis. Int J Mol Sci 2022; 23:ijms23147780. [PMID: 35887133 PMCID: PMC9317166 DOI: 10.3390/ijms23147780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 02/04/2023] Open
Abstract
Eosinophils and their regulatory molecules have been associated with chronic intestinal inflammation and gastrointestinal dysfunctions; eosinophil accumulation in the gut is prominent in inflammatory bowel disease (IBD). The chemokine receptor CCR3 plays a pivotal role in local and systemic recruitment and activation of eosinophils. In this study, we targeted CCR3-ligand interactions with a potent CCR3 receptor antagonist, SB328437, to alleviate eosinophil-associated immunological responses in the Winnie model of spontaneous chronic colitis. Winnie and C57BL/6 mice were treated with SB328437 or vehicle. Clinical and histopathological parameters of chronic colitis were assessed. Flow cytometry was performed to discern changes in colonic, splenic, circulatory, and bone marrow-derived leukocytes. Changes to the serum levels of eosinophil-associated chemokines and cytokines were measured using BioPlex. Inhibition of CCR3 receptors with SB328437 attenuated disease activity and gross morphological damage to the inflamed intestines and reduced eosinophils and their regulatory molecules in the inflamed colon and circulation. SB328437 had no effect on eosinophils and their progenitor cells in the spleen and bone marrow. This study demonstrates that targeting eosinophils via the CCR3 axis has anti-inflammatory effects in the inflamed intestine, and also contributes to understanding the role of eosinophils as potential end-point targets for IBD treatment.
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Affiliation(s)
- Rhiannon T. Filippone
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, VIC 3021, Australia; (R.T.F.); (N.D.); (K.N.)
| | - Narges Dargahi
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, VIC 3021, Australia; (R.T.F.); (N.D.); (K.N.)
| | - Rajaraman Eri
- School of Health Sciences, The University of Tasmania, Launceston, TAS 7248, Australia;
| | - Jose A. Uranga
- Department of Basic Health Sciences, University Rey Juan Carlos (URJC), 28922 Alcorcón, Spain;
- High Performance Research Group in Physiopathology and Pharmacology of the Digestive System (NeuGut), University Rey Juan Carlos (URJC), 28922 Alcorcón, Spain
| | - Joel C. Bornstein
- Department of Anatomy and Physiology, The University of Melbourne, Melbourne, VIC 3010, Australia;
| | - Vasso Apostolopoulos
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, VIC 3021, Australia; (R.T.F.); (N.D.); (K.N.)
- Immunology Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC 3021, Australia
- Correspondence:
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University, Western Centre for Health Research and Education, Sunshine Hospital, Melbourne, VIC 3021, Australia; (R.T.F.); (N.D.); (K.N.)
- Department of Medicine-Western Health, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, VIC 3010, Australia
- Regenerative Medicine and Stem Cells Program, Australian Institute of Musculoskeletal Science (AIMSS), Melbourne, VIC 3021, Australia
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2
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Xu H, Cai F, Li P, Wang X, Yao Y, Chang X, Bi Z, Sun H, Zhuang H, Hua ZC. Characterization and Analysis of the Temporal and Spatial Dynamic of Several Enteritis Modeling Methodologies. Front Immunol 2021; 12:727664. [PMID: 35003056 PMCID: PMC8728876 DOI: 10.3389/fimmu.2021.727664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 11/23/2021] [Indexed: 01/22/2023] Open
Abstract
Inflammatory bowel disease (IBD), such as Crohn’s disease and ulcerative colitis, is a complex disease involving genetic, immune, and microbiological factors. A variety of animal models of IBD have been developed to study the pathogenesis of human IBD, but there is no model that can fully represent the complexity of IBD. In this study, we established two acute enteritis models by oral 3% DSS or intraperitoneal injection of anti-CD3 antibody, and two chronic enteritis models by feeding 3 cycles of 1.5% DSS or 3 months of the high-fat diet, respectively, and then examined the clinical parameters, histological changes, and cytokine expression profiles after the successful establishment of the models. Our results indicated that in 3% DSS-induced acute enteritis, the colorectal injury was significantly higher than that of the small intestine, while in anti-CD3 antibody-induced acute enteritis, the small intestine injury was significantly higher than that of colorectal damage. Besides, in the 1.5% DSS-induced chronic enteritis, the damage was mainly concentrated in the colorectal, while the damage caused by long-term HFD-induced chronic enteritis was more focused on the small intestine. Therefore, our work provides a reference for selecting appropriate models when conducting research on factors related to the pathogenesis of IBD or evaluating the potential diagnosis and treatment possibilities of pharmaceuticals.
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Affiliation(s)
- Huangru Xu
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
| | - Fangfang Cai
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
- School of Biopharmacy, China Pharmaceutical University, Nanjing, China
| | - Ping Li
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
| | - Xiaoyang Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
| | - Yingying Yao
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
| | - Xiaoyao Chang
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
| | - Zhiqian Bi
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
| | - Huisong Sun
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
| | - Hongqin Zhuang
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
- *Correspondence: Hongqin Zhuang, ; Zi-Chun Hua,
| | - Zi-Chun Hua
- The State Key Laboratory of Pharmaceutical Biotechnology, College of Life Sciences, Nanjing University, Nanjing, China
- School of Biopharmacy, China Pharmaceutical University, Nanjing, China
- Changzhou High-Tech Research Institute of Nanjing University, Changzhou, China
- Jiangsu TargetPharma Laboratories Inc., Changzhou, China
- *Correspondence: Hongqin Zhuang, ; Zi-Chun Hua,
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3
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Jain N, Sharma P, Kumar D. Murine models for studying immunopathogenesis in gastrointestinal lesions: How to go about it. INDIAN J PATHOL MICR 2021; 64:S58-S62. [PMID: 34135139 DOI: 10.4103/ijpm.ijpm_802_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Gastro-intestinal (GI) lesions are common outcome to diverse etiological agents affecting the GI tract. It requires significant expertise to accurately diagnose the fundamental cause and treat accordingly. A better understanding of the immunological underpinning of these lesions is of great importance to ensure their successful management. Availability of specific animal models allows us to understand the subtle differences among diverse disease conditions and help decide upon the treatment trajectories. Since murine models are best suited for studying the immunopathogenesis of any disease, we will restrict our discussions here to the available murine models and their applications to study gastrointestinal lesions. In this review, we have systematically examined and compared the variety of mice models that are routinely used to study Inflammatory Bowel disease (IBD) and also how they can be leveraged to address specific questions relating to IBD.
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Affiliation(s)
| | - Priya Sharma
- Cellular Immunology Group, ICGEB, New Delhi, India
| | - Dhiraj Kumar
- Cellular Immunology Group, ICGEB, New Delhi, India
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4
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Rodriguez-Sillke Y, Visekruna A, Glauben R, Siegmund B, Steinhoff U. Recognition of food antigens by the mucosal and systemic immune system: Consequences for intestinal development and homeostasis. Int J Med Microbiol 2021; 311:151493. [PMID: 33652373 DOI: 10.1016/j.ijmm.2021.151493] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 02/19/2021] [Accepted: 02/23/2021] [Indexed: 12/16/2022] Open
Abstract
The impact of nutrition on systemic and intestinal immune responses remains controversially discussed and yet not fully understood. The majority of studies investigating the effects of dietary antigens focused to understand how local and systemic unresponsiveness is induced by innocuous food antigens. Moreover, it has been shown that both, microbial and dietary antigens are essential for the normal development of the mucosal immune system. Based on experimental findings from animals and IBD patients, we propose a model how the intestinal immune system performs the balancing act between recognition and tolerance of dietary antigens at the same time: In the healthy gut, repetitive uptake of dietary antigens by Peyer's patches leads to increasing activation of CD4+ T cells till hyper-activated lymphocytes undergo apoptosis. In contrast to healthy controls, this mechanism was disturbed in Crohn's disease patients. This observation might help to better understand beneficial effects of dietary intervention therapy.
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Affiliation(s)
- Yasmina Rodriguez-Sillke
- Medical Department for Gastroenterology, Infectious Diseases and Rheumatology, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, Germany
| | - Alexander Visekruna
- Institute for Medical Microbiology and Hygiene, Philipps University of Marburg, Marburg, Germany
| | - Rainer Glauben
- Medical Department for Gastroenterology, Infectious Diseases and Rheumatology, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, Germany
| | - Britta Siegmund
- Medical Department for Gastroenterology, Infectious Diseases and Rheumatology, Campus Benjamin Franklin, Charité - Universitätsmedizin Berlin, Germany
| | - Ulrich Steinhoff
- Institute for Medical Microbiology and Hygiene, Philipps University of Marburg, Marburg, Germany.
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Basu S, Elkington P, Rao NA. Pathogenesis of ocular tuberculosis: New observations and future directions. Tuberculosis (Edinb) 2020; 124:101961. [PMID: 33010848 DOI: 10.1016/j.tube.2020.101961] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/22/2020] [Accepted: 06/03/2020] [Indexed: 01/01/2023]
Abstract
Ocular tuberculosis (OTB) encompasses all forms of intra- and extra-ocular inflammation associated with Mycobacterium tuberculosis (Mtb) infection. However, the organism is rarely found in ocular fluid samples of diseased eyes, rendering the pathomechanisms of the disease unclear. This confounds clinical decision-making in diagnosis and treatment of OTB. Here, we critically review existing human and animal data related to ocular inflammation and TB pathogenesis to unravel likely pathomechanisms of OTB. Broadly there appear to be two fundamental mechanisms that may underlie the development of TB-associated ocular inflammation: a. inflammatory response to live/replicating Mtb in the eye, and b. immune mediated ocular inflammation induced by non-viable Mtb or its components in the eye. This distinction is significant as in direct Mtb-driven mechanisms, diagnosis and treatment would be aimed at detection of Mtb-infection and its elimination; while indirect mechanisms would primarily require anti-inflammatory therapy with adjunctive anti-TB therapy. Further, we discuss how that most clinical phenotypes of OTB likely represent a combination of both mechanisms, with one being predominant than the other.
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Affiliation(s)
- Soumyava Basu
- Retina and Uveitis Service, L V Prasad Eye Institute (Mithu Tulsi Chanrai Campus), Bhubaneswar, India.
| | - Paul Elkington
- NIHR Biomedical Research Centre, School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, UK
| | - Narsing A Rao
- USC-Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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6
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Wessels I, Rink L. Micronutrients in autoimmune diseases: possible therapeutic benefits of zinc and vitamin D. J Nutr Biochem 2019; 77:108240. [PMID: 31841960 DOI: 10.1016/j.jnutbio.2019.108240] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 09/09/2019] [Indexed: 12/14/2022]
Abstract
A functional immune system is essential for healthy life. This is achieved by the coordinate activation and interaction of different immune cells. One should be aware that activation of the immune response is as important as its deactivation when the pathogens are cleared, as otherwise host tissue can be damaged up to life-threatening levels. Autoimmune diseases (AID) represent a phenomenon of immune cells attacking host cells and tissue. Five to eight percent of the world's population are currently affected by 80-100 AID. In recent years, the incidence has been constantly increasing, reaching alarmingly high numbers particularly for type 1 diabetes mellitus, Crohn's disease, rheumatoid arthritis, Sjogren's syndrome and multiple sclerosis. This indicates a higher societal burden of AID for the future. This article provides an overview of general concepts of triggers and underlying mechanisms leading to self-destruction. Lately, several original concepts of disease etiology were revised, and there is a variety of hypotheses on triggers, underlying mechanisms and preventive actions. This article concentrates on the importance of nutrition, especially zinc and vitamin D, for balancing the immune function. Homespun nutritional remedies seem to reenter today's therapeutic strategies. Current treatment approaches are largely symptomatic or suppress the immune system. However, recent studies reveal significant benefits of nutrition-related therapeutic approaches including prevention and treatment of established disease, which offer a cost-efficient and trigger-unspecific alternative addressing balancing rather than suppression of the immune system. Zinc and vitamin D are currently the best studied and most promising candidates for therapeutic intervention.
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Affiliation(s)
- Inga Wessels
- Institute of Immunology, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, D-52074 Aachen, Germany.
| | - Lothar Rink
- Institute of Immunology, Medical Faculty, RWTH Aachen University, Pauwelsstr. 30, D-52074 Aachen, Germany.
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7
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Hoter A, Naim HY. The Functions and Therapeutic Potential of Heat Shock Proteins in Inflammatory Bowel Disease-An Update. Int J Mol Sci 2019; 20:ijms20215331. [PMID: 31717769 PMCID: PMC6862201 DOI: 10.3390/ijms20215331] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 10/24/2019] [Accepted: 10/25/2019] [Indexed: 02/07/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a multifactorial human intestinal disease that arises from numerous, yet incompletely defined, factors. Two main forms, Crohn's disease (CD) and ulcerative colitis (UC), lead to a chronic pathological form. Heat shock proteins (HSPs) are stress-responsive molecules involved in various pathophysiological processes. Several lines of evidence link the expression of HSPs to the development and prognosis of IBD. HSP90, HSP70 and HSP60 have been reported to contribute to IBD in different aspects. Moreover, induction and/or targeted inhibition of specific HSPs have been suggested to ameliorate the disease consequences. In the present review, we shed the light on the role of HSPs in IBD and their targeting to prevent further disease progression.
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Affiliation(s)
- Abdullah Hoter
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt or
- Department of Physiological Chemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany
| | - Hassan Y. Naim
- Department of Physiological Chemistry, University of Veterinary Medicine Hannover, 30559 Hannover, Germany
- Correspondence: ; Tel.: +49-511-953-8780; Fax: +49-511-953-8585
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8
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Chaparro M, Aterido A, Guerra I, Iborra M, Cabriada JL, Bujanda L, Taxonera C, García-Sánchez V, Marín-Jiménez I, Barreiro-de Acosta M, Vera I, Martín-Arranz MD, Hernández-Breijo B, Mesonero F, Sempere L, Gomollón F, Hinojosa J, Bermejo F, Beltrán B, Rodríguez-Pescador A, Banales JM, Olivares D, Aguilar-Melero P, Menchén L, Ferreiro-Iglesias R, Blazquez Gómez I, Benitez García B, Guijarro LG, Marin AC, Bernardo D, Marsal S, Julia A, Gisbert JP. Functional rare variants influence the clinical response to anti-TNF therapy in Crohn's disease. Therap Adv Gastroenterol 2019; 12:1756284819867848. [PMID: 31598133 PMCID: PMC6764039 DOI: 10.1177/1756284819867848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 06/28/2019] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND The effect of low-frequency functional variation on anti-tumor necrosis factor alpha (TNF) response in Crohn's disease (CD) patients remains unexplored. The objective of this study was to investigate the impact of functional rare variants in clinical response to anti-TNF therapy in CD. METHODS CD anti-TNF naïve patients starting anti-TNF treatment due to active disease [Crohn's Disease Activity Index (CDAI > 150)] were included. The whole genome was sequenced using the Illumina Hiseq4000 platform. Clinical response was defined as a CDAI score <150 at week 14 of anti-TNF treatment. Low-frequency variants were annotated and classified according to their damaging potential. The whole genome of CD patients was screened to identify homozygous loss-of-function (LoF) variants. The TNF signaling pathway was tested for overabundance of damaging variants using the SKAT-O method. Functional implication of the associated rare variation was evaluated using cell-type epigenetic enrichment analyses. RESULTS A total of 41 consecutive CD patients were included; 3250 functional rare variants were identified (2682 damaging and 568 LoF variants). Two homozygous LoF mutations were found in HLA-B and HLA-DRB1 genes associated with lack of response and remission, respectively. Genome-wide LoF variants were enriched in epigenetic marks specific for the gastrointestinal tissue (colon, p = 4.11e-4; duodenum, p = 0.011). The burden of damaging variation in the TNF signaling pathway was associated with response to anti-TNF therapy (p = 0.016); damaging variants were enriched in epigenetic marks from CD8+ (p = 6.01e-4) and CD4+ (p = 0.032) T cells. CONCLUSIONS Functional rare variants are involved in the response to anti-TNF therapy in CD. Cell-type enrichment analysis suggests that the gut mucosa and CD8+ T cells are the main mediators of this response.
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Affiliation(s)
| | | | - Iván Guerra
- Gastroenterology Unit, Hospital Universitario de
Fuenlabrada, Instituto de Investigación de Hospital La Paz (IdiPaz), Madrid,
Spain
| | | | - Jose Luis Cabriada
- Gastroenterology Unit, Hospital Universitario de
Galdakano, Vizcaya, Spain
| | | | - Carlos Taxonera
- Gastroenterology Unit, Hospital Universitario
Clínico San Carlos and IdISSC, Madrid, Spain
| | | | - Ignacio Marín-Jiménez
- Gastroenterology Unit, Hospital Universitario
Gregorio Marañón e IiSGM, Madrid, Spain
| | | | - Isabel Vera
- Gastroenterology Unit, Hospital Universitario
Puerta de Hierro Majadahonda, Madrid, Spain
| | | | - Borja Hernández-Breijo
- Universidad de Alcalá, Alcalá de Henares,
Spain,Immuno-Rheumatology Research Group. IdiPaz.
Hospital Universitario La Paz, Madrid, Spain
| | - Francisco Mesonero
- Gastroenterology Unit, Hospital Universitario
Ramón y Cajal, Madrid, Spain
| | - Laura Sempere
- Gastroenterology Unit, Hospital Universitario
Alicante, Alicante, Spain
| | | | - Joaquín Hinojosa
- Gastroenterology Unit, Hospital Universitario
Manises, Valencia, Spain
| | - Fernando Bermejo
- Gastroenterology Unit, Hospital Universitario
de Fuenlabrada, Instituto de Investigación de Hospital La Paz (IdiPaz),
Madrid, Spain
| | | | | | | | - David Olivares
- Gastroenterology Unit, Hospital Universitario
Clínico San Carlos and IdISSC, Madrid, Spain
| | - Patricia Aguilar-Melero
- Gastroenterology Unit, Instituto Maimónides de
Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina
Sofía/Universidad de Córdoba, Spain
| | - Luis Menchén
- Gastroenterology Unit, Hospital Universitario
Gregorio Marañón e IiSGM, Madrid, Spain
| | - Rocío Ferreiro-Iglesias
- Gastroenterology Unit, Hospital Universitario
Clínico de Santiago, Santiago de Compostela, Spain
| | - Isabel Blazquez Gómez
- Gastroenterology Unit, Hospital Universitario
Puerta de Hierro Majadahonda, Madrid, Spain
| | | | | | | | | | - Sara Marsal
- Rheumatology Research Group, Vall d’Hebron
Research Institute, Barcelona, Spain
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Abstract
Inflammatory bowel disease (IBD) defines a spectrum of complex disorders. Understanding how environmental risk factors, alterations of the intestinal microbiota, and polygenetic and epigenetic susceptibility impact on immune pathways is key for developing targeted therapies. Mechanistic understanding of polygenic IBD is complemented by Mendelian disorders that present with IBD, pharmacological interventions that cause colitis, autoimmunity, and multiple animal models. Collectively, this multifactorial pathogenesis supports a concept of immune checkpoints that control microbial-host interactions in the gut by modulating innate and adaptive immunity, as well as epithelial and mesenchymal cell responses. In addition to classical immunosuppressive strategies, we discuss how resetting the microbiota and restoring innate immune responses, in particular autophagy and epithelial barrier function, might be key for maintaining remission or preventing IBD. Targeting checkpoints in genetically stratified subgroups of patients with Mendelian disorder-associated IBD increasingly directs treatment strategies as part of personalized medicine.
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Affiliation(s)
- Holm H Uhlig
- Department of Pediatrics, University of Oxford, Oxford OX3 9DU, United Kingdom; .,Translational Gastroenterology Unit, University of Oxford, Oxford OX3 9DU, United Kingdom
| | - Fiona Powrie
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7FY, United Kingdom; .,Translational Gastroenterology Unit, University of Oxford, Oxford OX3 9DU, United Kingdom
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10
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Cappello F, Mazzola M, Jurjus A, Zeenny MN, Jurjus R, Carini F, Leone A, Bonaventura G, Tomasello G, Bucchieri F, Conway de Macario E, Macario AJL. Hsp60 as a Novel Target in IBD Management: A Prospect. Front Pharmacol 2019; 10:26. [PMID: 30800066 PMCID: PMC6376446 DOI: 10.3389/fphar.2019.00026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Accepted: 01/10/2019] [Indexed: 12/16/2022] Open
Abstract
Inflammatory bowel disease (IBD) encompasses various pathological conditions similar but distinct that share a multifactorial etiology, including involvement of the intestinal barrier function, the immune system, and intestinal microorganisms. Hsp60 is a chaperonin component of the chaperoning system, present in all cells and tissues, including the intestine. It plays important roles in cell physiology outside and inside mitochondria, its canonical place of residence. However, Hsp60 can also be pathogenic in many conditions, the Hsp60 chaperonopathies, possibly including IBD. The various clinico-pathological types of IBD have a complicated mix of causative factors, among which Hsp60 can be considered a putatively important driver of events and could play an etiopathogenic role. This possibility is discussed in this review. We also indicate that Hsp60 can be a biomarker useful in disease diagnosing and monitoring and, if found active in pathogenesis, should become a target for developing new therapies. The latter are particularly needed to alleviate patient suffering and to prevent complications, including colon cancer.
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Affiliation(s)
- Francesco Cappello
- Department of Experimental Biomedicine and Clinical Neuroscience University of Palermo (BIONEC-UniPA), Palermo, Italy
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
- Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA, United States
- *Correspondence: Francesco Cappello,
| | - Margherita Mazzola
- Department of Experimental Biomedicine and Clinical Neuroscience University of Palermo (BIONEC-UniPA), Palermo, Italy
| | - Abdo Jurjus
- Department of Anatomy, Cell Biology and Physiology, American University of Beirut, Beirut, Lebanon
| | - Marie-Noel Zeenny
- Department of Anatomy, Cell Biology and Physiology, American University of Beirut, Beirut, Lebanon
| | - Rosalyn Jurjus
- Department of Anatomy and Cell Biology, Faculty Development Associate for Education Research, Center for Faculty Excellence, The George Washington University School of Medicine and Health Sciences, Washington, DC, United States
| | - Francesco Carini
- Department of Experimental Biomedicine and Clinical Neuroscience University of Palermo (BIONEC-UniPA), Palermo, Italy
| | - Angelo Leone
- Department of Experimental Biomedicine and Clinical Neuroscience University of Palermo (BIONEC-UniPA), Palermo, Italy
| | - Giuseppe Bonaventura
- Department of Experimental Biomedicine and Clinical Neuroscience University of Palermo (BIONEC-UniPA), Palermo, Italy
| | - Giovanni Tomasello
- Department of Experimental Biomedicine and Clinical Neuroscience University of Palermo (BIONEC-UniPA), Palermo, Italy
| | - Fabio Bucchieri
- Department of Experimental Biomedicine and Clinical Neuroscience University of Palermo (BIONEC-UniPA), Palermo, Italy
| | - Everly Conway de Macario
- Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore – Institute of Marine and Environmental Technology (IMET), Baltimore, MD, United States
| | - Alberto J. L. Macario
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy
- Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore – Institute of Marine and Environmental Technology (IMET), Baltimore, MD, United States
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11
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Martín R, Chain F, Miquel S, Motta JP, Vergnolle N, Sokol H, Langella P. Using murine colitis models to analyze probiotics-host interactions. FEMS Microbiol Rev 2018; 41:S49-S70. [PMID: 28830096 DOI: 10.1093/femsre/fux035] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 06/08/2017] [Indexed: 02/07/2023] Open
Abstract
Probiotics are defined as 'live microorganisms which when administered in adequate amounts confer a health benefit on the host'. So, to consider a microorganism as a probiotic, a demonstrable beneficial effect on the health host should be shown as well as an adequate defined safety status and the capacity to survive transit through the gastrointestinal tract and to storage conditions. In this review, we present an overview of the murine colitis models currently employed to test the beneficial effect of the probiotic strains as well as an overview of the probiotics already tested. Our aim is to highlight both the importance of the adequate selection of the animal model to test the potential probiotic strains and of the value of the knowledge generated by these in vivo tests.
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Affiliation(s)
- Rebeca Martín
- INRA, Commensals and Probiotics-Host Interactions Laboratory, Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - Florian Chain
- INRA, Commensals and Probiotics-Host Interactions Laboratory, Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - Sylvie Miquel
- Laboratoire Microorganismes: Génome et Environnement (LMGE), UMR CNRS 6023, Université Clermont-Auvergne, 63000 Clermont-Ferrand, France
| | - Jean-Paul Motta
- Department of Biological Science, Inflammation Research Network, University of Calgary, AB T3E 4N1, Canada.,IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, F-31300 Toulouse, France
| | - Nathalie Vergnolle
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, F-31300 Toulouse, France
| | - Harry Sokol
- INRA, Commensals and Probiotics-Host Interactions Laboratory, Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France.,Sorbonne University - Université Pierre et Marie Curie (UPMC), 75252 Paris, France.,Institut National de la Santé et de la Recherche Médicale (INSERM) Equipe de Recherche Labélisée (ERL) 1157, Avenir Team Gut Microbiota and Immunity, 75012 Paris, France.,Department of Gastroenterology, Saint Antoine Hospital, Assistance Publique - Hopitaux de Paris, UPMC, 75012 Paris, France
| | - Philippe Langella
- INRA, Commensals and Probiotics-Host Interactions Laboratory, Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
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12
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Recombinant heat shock protein 70 functional peptide and alpha-fetoprotein epitope peptide vaccine elicits specific anti-tumor immunity. Oncotarget 2018; 7:71274-71284. [PMID: 27713135 PMCID: PMC5342077 DOI: 10.18632/oncotarget.12464] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Accepted: 09/28/2016] [Indexed: 12/16/2022] Open
Abstract
Alpha-fetoprotein (AFP) is a marker of hepatocellular carcinoma (HCC) and serves as a target for immunotherapy. However, current treatments targeting AFP are not reproducible and do not provide complete protection against cancer. This issue may be solved by developing novel therapeutic vaccines with enhanced immunogenicity that could effectively target AFP-expressing tumors. In this study, we report construction of a therapeutic peptide vaccine by linking heat shock protein 70 (HSP70) functional peptide to the AFP epitope to obtain HSP70-P/AFP-P. This novel peptide was administered into BALB/c mice to observe the effects. Quantification of AFP-specific CD8 + T cells that secrete IFN-γ in these mice via ELISPOT revealed the synergistic effects of HSP70-P/AFP-P with increased numbers of AFP-specific CD8 + T cells. Similarly, ELISA analysis showed increased granzyme B and perforin released by natural killer cells. Moreover, in vitro cytotoxic T-lymphocyte assays and in vivo tumor preventive experiments clearly showed the higher antitumor effects of HSP70-P/AFP-P against AFP-expressing tumors. These results show that treatment of BALB/c mice with HSP70-P/AFP-P induced stronger T-cells responses and improved protective immunity. Our data suggest that HSP70-P/AFP-P may be used as a therapeutic approach in the treatment of AFP-expressing cancers.
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13
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Innate immune receptors for cross-presentation: The expanding role of NLRs. Mol Immunol 2017; 113:6-10. [PMID: 29198621 PMCID: PMC6859786 DOI: 10.1016/j.molimm.2017.11.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/26/2017] [Accepted: 11/27/2017] [Indexed: 12/13/2022]
Abstract
PRRs temporally control cross-presentation during acute vs. chronic pathogen handling. NLRs signal in close proximity to phagosomal and endosomal membranes. Current status of NLR-dependent regulation of MHC class antigen presentation.
A critical role of pattern recognition receptors (PRRs) is to influence adaptive immune responses by regulating antigen presentation. Engagement of PRRs in dendritic cells (DCs) increases MHC class I antigen presentation and CD8+ T-cell activation by cross-presented peptides but the molecular mechanisms underlying these effects are not completely understood. Studies looking at the role of PRRs in cross-presentation have been largely limited to TLRs but the role of other PRRs such as cytosolic nucleotide-binding oligomerization domain-like (NOD-like) receptors remains particularly enigmatic. Here we discuss recent evidence of the role of PRRs on cross-presentation and consider how cytosolic NLR-associated pathways, such as NOD2, may integrate these signals resulting in effective adaptive CD8+ T cells responses.
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Krebs CF, Paust HJ, Krohn S, Koyro T, Brix SR, Riedel JH, Bartsch P, Wiech T, Meyer-Schwesinger C, Huang J, Fischer N, Busch P, Mittrücker HW, Steinhoff U, Stockinger B, Perez LG, Wenzel UO, Janneck M, Steinmetz OM, Gagliani N, Stahl RAK, Huber S, Turner JE, Panzer U. Autoimmune Renal Disease Is Exacerbated by S1P-Receptor-1-Dependent Intestinal Th17 Cell Migration to the Kidney. Immunity 2017; 45:1078-1092. [PMID: 27851911 PMCID: PMC6381450 DOI: 10.1016/j.immuni.2016.10.020] [Citation(s) in RCA: 126] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 07/11/2016] [Accepted: 09/27/2016] [Indexed: 12/13/2022]
Abstract
Th17 cells are most abundant in the gut, where their presence depends on the intestinal microbiota. Here, we examined whether intestinal Th17 cells contribute to extra-intestinal Th17 responses in autoimmune kidney disease. We found high frequencies of Th17 cells in the kidneys of patients with antineutrophil cytoplasmatic antibody (ANCA)-associated glomerulonephritis. We utilized photoconversion of intestinal cells in Kaede mice to track intestinal T cell mobilization upon glomerulonephritis induction, and we found that Th17 cells egress from the gut in a S1P-receptor-1-dependent fashion and subsequently migrate to the kidney via the CCL20/CCR6 axis. Depletion of intestinal Th17 cells in germ-free and antibiotic-treated mice ameliorated renal disease, whereas expansion of these cells upon Citrobacter rodentium infection exacerbated pathology. Thus, in some autoimmune settings, intestinal Th17 cells migrate into target organs, where they contribute to pathology. Targeting the intestinal Th17 cell "reservoir" may present a therapeutic strategy for these autoimmune disorders.
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Affiliation(s)
- Christian F Krebs
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Hans-Joachim Paust
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Sonja Krohn
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Tobias Koyro
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Silke R Brix
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Jan-Hendrik Riedel
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Patricia Bartsch
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Thorsten Wiech
- Institut für Pathologie, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | | | - Jiabin Huang
- Institut für Medizinische Mikrobiologie, Virologie, und Hygiene, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Nicole Fischer
- Institut für Medizinische Mikrobiologie, Virologie, und Hygiene, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Philipp Busch
- Klinik für Allgemeinchirurgie, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Hans-Willi Mittrücker
- Institut für Immunologie, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Ulrich Steinhoff
- Philipps-Universität Marburg, Institut für Medizinische Mikrobiologie und Krankenhaushygiene, 35043 Marburg, Germany
| | | | - Laura Garcia Perez
- I. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Ulrich O Wenzel
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Matthias Janneck
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Oliver M Steinmetz
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Nicola Gagliani
- Klinik für Allgemeinchirurgie, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Rolf A K Stahl
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Samuel Huber
- I. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Jan-Eric Turner
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany
| | - Ulf Panzer
- III. Medizinische Klinik, Universitätsklinikum Hamburg-Eppendorf, 20251 Hamburg, Germany.
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15
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Colotta F, Jansson B, Bonelli F. Modulation of inflammatory and immune responses by vitamin D. J Autoimmun 2017; 85:78-97. [PMID: 28733125 DOI: 10.1016/j.jaut.2017.07.007] [Citation(s) in RCA: 205] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Accepted: 07/05/2017] [Indexed: 02/07/2023]
Abstract
Vitamin D (VitD) is a prohormone most noted for the regulation of calcium and phosphate levels in circulation, and thus of bone metabolism. Inflammatory and immune cells not only convert inactive VitD metabolites into calcitriol, the active form of VitD, but also express the nuclear receptor of VitD that modulates differentiation, activation and proliferation of these cells. In vitro, calcitriol upregulates different anti-inflammatory pathways and downregulates molecules that activate immune and inflammatory cells. Administration of VitD has beneficial effects in a number of experimental models of autoimmune disease. Epidemiologic studies have indicated that VitD insufficiency is frequently associated with immune disorders and infectious diseases, exacerbated by increasing evidence of suboptimal VitD status in populations worldwide. To date, however, most interventional studies in human inflammatory and immune diseases with VitD supplementation have proven to be inconclusive. One of the reasons could be that the main VitD metabolite measured in these studies was the 25-hydroxyVitD (25OHD) rather than its active form calcitriol. Although our knowledge of calcitriol as modulator of immune and inflammatory reactions has dramatically increased in the past decades, further in vivo and clinical studies are needed to confirm the potential benefits of VitD in the control of immune and inflammatory conditions.
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Dankers W, Colin EM, van Hamburg JP, Lubberts E. Vitamin D in Autoimmunity: Molecular Mechanisms and Therapeutic Potential. Front Immunol 2017; 7:697. [PMID: 28163705 PMCID: PMC5247472 DOI: 10.3389/fimmu.2016.00697] [Citation(s) in RCA: 185] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 12/29/2016] [Indexed: 12/31/2022] Open
Abstract
Over the last three decades, it has become clear that the role of vitamin D goes beyond the regulation of calcium homeostasis and bone health. An important extraskeletal effect of vitamin D is the modulation of the immune system. In the context of autoimmune diseases, this is illustrated by correlations of vitamin D status and genetic polymorphisms in the vitamin D receptor with the incidence and severity of the disease. These correlations warrant investigation into the potential use of vitamin D in the treatment of patients with autoimmune diseases. In recent years, several clinical trials have been performed to investigate the therapeutic value of vitamin D in multiple sclerosis, rheumatoid arthritis, Crohn’s disease, type I diabetes, and systemic lupus erythematosus. Additionally, a second angle of investigation has focused on unraveling the molecular pathways used by vitamin D in order to find new potential therapeutic targets. This review will not only provide an overview of the clinical trials that have been performed but also discuss the current knowledge about the molecular mechanisms underlying the immunomodulatory effects of vitamin D and how these advances can be used in the treatment of autoimmune diseases.
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Affiliation(s)
- Wendy Dankers
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, Netherlands; Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Edgar M Colin
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, Netherlands; Department of Rheumatology, ZGT, Almelo, Netherlands
| | - Jan Piet van Hamburg
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, Netherlands; Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Erik Lubberts
- Department of Rheumatology, Erasmus MC, University Medical Center, Rotterdam, Netherlands; Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, Netherlands
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RETRACTED ARTICLE: Mouse models of intestinal inflammation and cancer. Arch Toxicol 2016; 90:2109-2130. [DOI: 10.1007/s00204-016-1747-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 06/01/2016] [Indexed: 12/19/2022]
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Abstract
A clear etiological link has been established between infection with several gram-negative enteric pathogens, including Salmonella spp., and the incidence of reactive arthritis (ReA), an autoimmune disease that largely affects the joints. ReA is sometimes referred to as Reiter's syndrome, particularly when accompanied by uveitis and urethritis. This review reviews the evidence etiologically linking Salmonella infection with autoimmune disease and addresses the roles that bacterial and host elements play in controlling disease outcome. ReA is an autoimmune disease that largely consists of painful joint inflammation but also can include inflammation of the eye, gastrointestinal tract, and skin. ReA is a member of a broad spectrum of chronic inflammatory disorders termed the seronegative spondyloarthropathies (SNSpAs) that includes ankylosing spondylitis (AS), psoriatic arthritis, and enteropathic arthritis. Salmonella species, as well as other enteric pathogens associated with postgastroenteritis ReA, are facultative intracellular gram-negative bacteria. Many studies have analyzed the association of the HLA class I molecule, HLA-B27, with SNSpAs. Whereas B27 has been shown to be present in 90 to 95% of cases of AS, the association of the B27 haplotype with other SNSpAs is more tenuous. The clear association between ReA and infection with Salmonella or other gram-negative enteric pathogens has led to the suggestion that the adaptive immune response to infection has an autoimmune component. In addition to various Salmonella species, other gram-negative enteric pathogens have been linked to the development of ReA. Given their close relationship to Salmonella, this review considers the involvement of Shigella species in ReA.
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Cantorna MT, Waddell A. The vitamin D receptor turns off chronically activated T cells. Ann N Y Acad Sci 2014; 1317:70-5. [PMID: 24673331 DOI: 10.1111/nyas.12408] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
T cell proliferation and T helper (TH ) cells that make IL-17 (TH 17 cells) and IFN-γ (TH 1 cells) have been shown to be inhibited by 1,25(OH)2 D3 . Previous work has shown that immune-mediated diseases, where TH 1 and TH 17 cells are pathogenic, are ameliorated with 1,25(OH)2 D3 treatment. Paradoxically, infectious diseases that require TH 1 and TH 17 responses for host resistance are unaffected by 1,25(OH)2 D3 treatment. Resting T cells are not responsive to vitamin D because they do not express the vitamin D receptor (VDR) until late after activation. T cells activated following an infection help clear the infection, and since the antigen is eliminated, vitamin D is not needed to dampen the immune response. Conversely, in immune-mediated disease, there is chronic T cell activation, and in this scenario, vitamin D and 1,25(OH)2 D3 are critical for inhibiting T cell proliferation and cytokine production. Vitamin D is a late regulator of T cell function and acts to turn off T cells. This paper will review these data.
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Affiliation(s)
- Margherita T Cantorna
- Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, Pennsylvania; Center for Molecular Immunology and Infectious Disease, The Pennsylvania State University, University Park, Pennsylvania
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20
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Mittrücker HW, Seidel D, Bland PW, Zarzycka A, Kaufmann SHE, Visekruna A, Steinhoff U. Lack of microbiota reduces innate responses and enhances adaptive immunity againstListeria monocytogenesinfection. Eur J Immunol 2014; 44:1710-5. [DOI: 10.1002/eji.201343927] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 02/03/2014] [Accepted: 02/18/2014] [Indexed: 02/03/2023]
Affiliation(s)
- Hans-Willi Mittrücker
- Department of Immunology; Max Planck Institute for Infection Biology; Berlin Germany
- Institute for Immunology; University Medical Center Hamburg-Eppendorf; Hamburg Germany
| | - Daniel Seidel
- Department of Hepatology and Gastroenterology; Charité Universitätsmedizin Berlin; Berlin Germany
| | - Paul W. Bland
- Department of Clinical Immunology; Gothenburg University; Gothenburg Sweden
| | - Agnieszka Zarzycka
- Institute for Medical Microbiology and Hospital Hygiene; Philipps-University Marburg; Marburg Germany
| | - Stefan H. E. Kaufmann
- Department of Immunology; Max Planck Institute for Infection Biology; Berlin Germany
| | - Alexander Visekruna
- Institute for Medical Microbiology and Hospital Hygiene; Philipps-University Marburg; Marburg Germany
| | - Ulrich Steinhoff
- Department of Immunology; Max Planck Institute for Infection Biology; Berlin Germany
- Institute for Medical Microbiology and Hospital Hygiene; Philipps-University Marburg; Marburg Germany
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21
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Vitamin D receptor expression controls proliferation of naïve CD8+ T cells and development of CD8 mediated gastrointestinal inflammation. BMC Immunol 2014; 15:6. [PMID: 24502291 PMCID: PMC3923390 DOI: 10.1186/1471-2172-15-6] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 02/04/2014] [Indexed: 02/07/2023] Open
Abstract
Background Vitamin D receptor (VDR) deficiency contributes to the development of experimental inflammatory bowel disease (IBD) in several different models. T cells have been shown to express the VDR, and T cells are targets of vitamin D. In this article we determined the effects of VDR expression on CD8+ T cells. Results VDR KO CD8+ T cells, but not WT CD8+ T cells, induced colitis in Rag KO recipients. In addition, co-transfer of VDR KO CD8+ T cells with naïve CD4+ T cells accelerated colitis development. The more severe colitis was associated with rapidly proliferating naïve VDR KO CD8+ T cells and increased IFN-γ and IL-17 in the gut. VDR KO CD8+ T cells proliferated in vitro without antigen stimulation and did not downregulate CD62L and upregulate CD44 markers following proliferation that normally occurred in WT CD8+ T cells. The increased proliferation of VDR KO CD8+ cells was due in part to the higher production and response of the VDR KO cells to IL-2. Conclusions Our data indicate that expression of the VDR is required to prevent replication of quiescent CD8+ T cells. The inability to signal through the VDR resulted in the generation of pathogenic CD8+ T cells from rapidly proliferating cells that contributed to the development of IBD.
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22
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Jiang J, Xie D, Zhang W, Xiao G, Wen J. Fusion of Hsp70 to Mage-a1 enhances the potency of vaccine-specific immune responses. J Transl Med 2013; 11:300. [PMID: 24314011 PMCID: PMC4029478 DOI: 10.1186/1479-5876-11-300] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 11/27/2013] [Indexed: 11/17/2022] Open
Abstract
Background Heat shock proteins (HSPs) are capable of promoting antigen presentation of chaperoned peptides through interactions with receptors on antigen presenting cells. This property of HSPs suggests a potential function as an adjuvant-free carrier to stimulate immune responses against a covalently linked fusion partner. MAGE-A1 is a likely candidate for tumor immunotherapy due to its abundant immunogenic epitopes and strict tumor specificity. To analyze the influence of HSP70 conjugation to MAGE-A1, towards developing a novel effective vaccine against MAGE-expressing tumors, we cloned the murine counterpart of the human HSP70 and MAGE-A1 genes. Methods Recombinant proteins expressing Mage-a1 (aa 118–219), Hsp70, and Mage-a1-Hsp70 fusion were purified and used to immunize C57BL/6 mice. The humoral and cellular responses elicited against Mage-a1 were measured by ELISA, IFN-γ ELISPOT assay, and cytotoxicity assay. Results Immunization of mice with Mage-a1-Hsp70 fusion protein elicited significantly higher Mage-a1-specific antibody titers than immunization with either Mage-a1 alone or a combination of Mage-a1 + Hsp70. The frequency of IFN-γ-producing cells and the cytotoxic T lymphocyte (CTL) activity was also elevated. Consistent with the elevated immune response, immunization with fusion protein induced potent in vivo antitumor immunity against MAGE-a1-expressing tumors. Conclusions These results indicate that the fusion of Hsp70 to Mage-a1 can enhance immune responses and anti-tumor effects against Mage-a1-expressing tumors. Fusion of HSP70 to a tumor antigen may greatly enhance the potency of protein vaccines and can potentially be applied to other cancer systems with known tumor-specific antigens. These findings provide a scientific basis for the development of a novel HSP70 and MAGE fusion protein vaccine against MAGE-expressing tumors.
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Affiliation(s)
- Juhong Jiang
- Department of Pathology, The First Affiliated Hospital, Guangzhou Medical University, 151, Yanjiang Road, Guangzhou 510120, China.
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Wang XP, Wang QX, Lin HP, Wang YL, Yang Y. Glycoprotein 96 and α-fetoprotein cross-linking complexes elicited specific antitumor immunity. Cancer Biother Radiopharm 2013; 28:406-14. [PMID: 23484810 DOI: 10.1089/cbr.2012.1404] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most common malignant gastroenterological cancers over the world. α-fetoprotein (AFP) is an oncofetal protein produced during HCC development that could generate weaker and less reproducible antitumor protection, and it may serve as a target for immunotherapy. Therefore, it is imperative to enhance its immunogenicity and develop therapeutic vaccines to eliminate AFP-expressing tumors. In this study, by way of glutaraldehyde cross-linking, we constructed a potential therapeutic protein vaccine, glycoprotein 96 (gp96)/AFP. Our results demonstrated that AFP and gp96 synergistically exhibited significant increase in AFP-specific CD8⁺ T-cell responses and impressive cytotoxic antitumor effect against AFP-expressing tumors. Priming mice with the reconstructed vaccine, we elicited robust strong protective immunity. Our study suggests that tumor vaccine by cross-linking tumor antigen and gp96 is a promising approach to cancer therapy.
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Affiliation(s)
- Xiao-Ping Wang
- Laboratory of Molecular Biology & Pathology, Shaanxi University of Chinese Medicine, Xianyang, China.
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24
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Wang X, Wang Q, Lin H, Li S, Sun L, Yang Y. HSP72 and gp96 in gastroenterological cancers. Clin Chim Acta 2012; 417:73-9. [PMID: 23266770 DOI: 10.1016/j.cca.2012.12.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 12/14/2012] [Accepted: 12/15/2012] [Indexed: 11/30/2022]
Abstract
Heat shock protein 72 (HSP72) and glycoprotein 96 (gp96) are highly expressed in cancer tissues. Recent studies indicate the possible roles of HSP72 and gp96 in the development and progression of gastrointestinal carcinomas but detailed mechanisms are still ambiguous. Human esophageal cancer, gastric cancer, colon cancer and liver cancer are common gastrointestinal malignant carcinomas in the world. The studies indicated that there existed a significant correlation between the expression of HSP72, gp96 and the development and progression of digestive carcinomas. HSP72 and gp96 expression were significantly associated with the presence of tumor infiltration, lymph node and remote metastasis. Interestingly, studies have found that HSP72 chaperoned alpha-fetoprotein (AFP), HBx in hepatocellular carcinoma, and CD44 in colonic carcinomas. The further researches demonstrated that HSP72-AFP or gp96-AFP recombined vaccine could elicit specific anti-tumor immunity. The high-level expression of HSP72 and gp96 may be not only used as diagnostic or prognostic markers for gastrointestinal carcinomas but also as better immunotherapeutic vaccines in the cancers.
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Affiliation(s)
- Xiaoping Wang
- Key Laboratory of Molecular Biology and Pathology, Shaanxi University of Chinese Medicine, Xianyang, Shaanxi 712046, PR China.
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25
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Iwaya H, Lee JS, Yamagishi S, Shinoki A, Lang W, Thawornkuno C, Kang HK, Kumagai Y, Suzuki S, Kitamura S, Hara H, Okuyama M, Mori H, Kimura A, Ishizuka S. The delay in the development of experimental colitis from isomaltosyloligosaccharides in rats is dependent on the degree of polymerization. PLoS One 2012; 7:e50658. [PMID: 23209802 PMCID: PMC3510184 DOI: 10.1371/journal.pone.0050658] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Accepted: 10/23/2012] [Indexed: 12/25/2022] Open
Abstract
Background Isomaltosyloligosaccharides (IMO) and dextran (Dex) are hardly digestible in the small intestine and thus influence the luminal environment and affect the maintenance of health. There is wide variation in the degree of polymerization (DP) in Dex and IMO (short-sized IMO, S-IMO; long-sized IMO, L-IMO), and the physiological influence of these compounds may be dependent on their DP. Methodology/Principal Findings Five-week-old male Wistar rats were given a semi-purified diet with or without 30 g/kg diet of the S-IMO (DP = 3.3), L-IMO (DP = 8.4), or Dex (DP = 1230) for two weeks. Dextran sulfate sodium (DSS) was administered to the rats for one week to induce experimental colitis. We evaluated the clinical symptoms during the DSS treatment period by scoring the body weight loss, stool consistency, and rectal bleeding. The development of colitis induced by DSS was delayed in the rats fed S-IMO and Dex diets. The DSS treatment promoted an accumulation of neutrophils in the colonic mucosa in the rats fed the control, S-IMO, and L-IMO diets, as assessed by a measurement of myeloperoxidase (MPO) activity. In contrast, no increase in MPO activity was observed in the Dex-diet-fed rats even with DSS treatment. Immune cell populations in peripheral blood were also modified by the DP of ingested saccharides. Dietary S-IMO increased the concentration of n-butyric acid in the cecal contents and the levels of glucagon-like peptide-2 in the colonic mucosa. Conclusion/Significance Our study provided evidence that the physiological effects of α-glucosaccharides on colitis depend on their DP, linkage type, and digestibility.
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Affiliation(s)
- Hitoshi Iwaya
- Graduate School of Agriculture, Hokkaido University, Sapporo, Japan
| | - Jae-Sung Lee
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Shinya Yamagishi
- Graduate School of Agriculture, Hokkaido University, Sapporo, Japan
| | - Aki Shinoki
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Weeranuch Lang
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | | | - Hee-Kwon Kang
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Yuya Kumagai
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Shiho Suzuki
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - Shinichi Kitamura
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - Hiroshi Hara
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Masayuki Okuyama
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Haruhide Mori
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Atsuo Kimura
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Satoshi Ishizuka
- Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
- * E-mail:
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Abstract
PURPOSE OF REVIEW To present scientific evidence supporting the infectious origin for the antiphospholipid syndrome (APS) by molecular mimicry between pathogens, infection and vaccination with β2-glycoprotein I (β2-GPI) molecule. RECENT FINDINGS APS is characterized by the presence of pathogenic autoantibodies against β2-GPI. The infection etiology of APS was well established. Likewise, a link between vaccination such as tetanus toxoid may trigger antibodies targeting tetanus toxoid and β2-GPI, due to molecular mimicry between the two molecules. During the years, the pathogenic potential of anti-tetanus toxoid antibodies cross reactive with β2-GPI were found to be pathogenic in animal models, inducing experimental APS. SUMMARY Accumulated evidence supports that the presence of anti-β2-GPI antibodies is associated with a history of infections and the main mechanism to explain this correlation is molecular mimicry. The relationship between tetanus toxoid vaccination and APS reveals a novel view on the autoimmune/autoinflammatory syndrome induced by adjuvants (ASIA).
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Chang MY, Boulden J, Valenzano MC, Soler AP, Muller AJ, Mullin JM, Prendergast GC. Bin1 attenuation suppresses experimental colitis by enforcing intestinal barrier function. Dig Dis Sci 2012; 57:1813-21. [PMID: 22526583 PMCID: PMC3677578 DOI: 10.1007/s10620-012-2147-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Accepted: 03/16/2012] [Indexed: 12/20/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) is associated with defects in intestinal barriers that rely upon cellular tight junctions. Thus, identifying genes that could be targeted to enforce tight junctions and improve barrier function may lead to new treatment strategies for IBD. AIMS This preclinical study aimed to evaluate an hypothesized role for the tumor suppressor gene Bin1 as a modifier of the severity of experimental colitis. METHODS We ablated the Bin1 gene in a mosaic mouse model to evaluate its effects on experimental colitis and intestinal barrier function. Gross pathology, histology and inflammatory cytokine expression patterns were characterized and ex vivo physiology determinations were conducted to evaluate barrier function in intact colon tissue. RESULTS Bin1 attenuation limited experimental colitis in a sexually dimorphic manner with stronger protection in female subjects. Colitis suppression was associated with an increase in basal transepithelial electrical resistance (TER) and a decrease in paracellular transepithelial flux, compared to control wild-type animals. In contrast, Bin1 attenuation did not affect short circuit current, nor did it alter the epithelial barrier response to non-inflammatory permeability enhancers in the absence of inflammatory stimuli. CONCLUSIONS Bin1 is a genetic modifier of experimental colitis that controls the paracellular pathway of transcellular ion transport regulated by cellular tight junctions. Our findings offer a preclinical validation of Bin1 as a novel therapeutic target for IBD treatment.
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Affiliation(s)
| | | | | | - Alejandro P. Soler
- Lankenau Institute for Medical Research, Wynnewood PA USA,Richfield Laboratory of Dermatopathology, Cincinnati OH USA
| | | | | | - George C. Prendergast
- Lankenau Institute for Medical Research, Wynnewood PA USA,Department of Pathology, Anatomy & Cell Biology, Jefferson Medical College and Kimmel Cancer Center, Thomas Jefferson University, Philadelphia PA USA
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Wang XP, Lin HP, Wang QX, Gu Y. Specific Antitumor Immunity Induced by Cross-linking Complex Heat Shock Protein 72 and Alpha-fetoprotein. Cancer Biother Radiopharm 2012; 27:189-97. [DOI: 10.1089/cbr.2011.1135] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Affiliation(s)
- Xiao-Ping Wang
- Laboratory of Molecular Pathology, Shaanxi University of Chinese Medicine, Xianyang, China
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota
| | - Huan-Ping Lin
- Laboratory of Molecular Pathology, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Qiao-Xia Wang
- Laboratory of Molecular Pathology, Shaanxi University of Chinese Medicine, Xianyang, China
| | - Yan Gu
- Department of Pharmaceutical Sciences, North Dakota State University, Fargo, North Dakota
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Mizoguchi A. Animal models of inflammatory bowel disease. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2012; 105:263-320. [PMID: 22137435 DOI: 10.1016/b978-0-12-394596-9.00009-3] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Inflammatory bowel disease (IBD) is a chronic intestinal inflammatory condition that is medicated by genetic, immune, and environmental factors. At least 66 different kinds of animal models have been established to study IBD, which are classified primarily into chemically induced, cell-transfer, congenial mutant, and genetically engineered models. These IBD models have provided significant contributions to not only dissect the mechanism but also develop novel therapeutic strategies for IBD. In addition, recent advances on genetically engineered techniques such as cell-specific and inducible knockout as well as knockin mouse systems have brought novel concepts on IBD pathogenesis to the fore. Further, mouse models, which lack some IBD susceptibility genes, have suggested more complicated mechanism of IBD than previously predicted. This chapter summarizes the distinct feature of each murine IBD model and discusses the previous and current lessons from the IBD models.
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Affiliation(s)
- Atsushi Mizoguchi
- Department of Pathology, Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Lee JC, Lyons PA, McKinney EF, Sowerby JM, Carr EJ, Bredin F, Rickman HM, Ratlamwala H, Hatton A, Rayner TF, Parkes M, Smith KGC. Gene expression profiling of CD8+ T cells predicts prognosis in patients with Crohn disease and ulcerative colitis. J Clin Invest 2011; 121:4170-9. [PMID: 21946256 DOI: 10.1172/jci59255] [Citation(s) in RCA: 228] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Accepted: 08/10/2011] [Indexed: 12/26/2022] Open
Abstract
Crohn disease (CD) and ulcerative colitis (UC) are increasingly common, chronic forms of inflammatory bowel disease. The behavior of these diseases varies unpredictably among patients. Identification of reliable prognostic biomarkers would enable treatment to be personalized so that patients destined to experience aggressive disease could receive appropriately potent therapies from diagnosis, while those who will experience more indolent disease are not exposed to the risks and side effects of unnecessary immunosuppression. Using transcriptional profiling of circulating T cells isolated from patients with CD and UC, we identified analogous CD8+ T cell transcriptional signatures that divided patients into 2 otherwise indistinguishable subgroups. In both UC and CD, patients in these subgroups subsequently experienced very different disease courses. A substantially higher incidence of frequently relapsing disease was experienced by those patients in the subgroup defined by elevated expression of genes involved in antigen-dependent T cell responses, including signaling initiated by both IL-7 and TCR ligation - pathways previously associated with prognosis in unrelated autoimmune diseases. No equivalent correlation was observed with CD4+ T cell gene expression. This suggests that the course of otherwise distinct autoimmune and inflammatory conditions may be influenced by common pathways and identifies what we believe to be the first biomarker that can predict prognosis in both UC and CD from diagnosis, a major step toward personalized therapy.
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Affiliation(s)
- James C Lee
- Cambridge Institute for Medical Research, University of Cambridge School of Clinical Medicine, Cambridge, United Kingdom
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31
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Sumiyoshi M, Sakanaka M, Kimura Y. Effects of Red Ginseng extract on allergic reactions to food in Balb/c mice. JOURNAL OF ETHNOPHARMACOLOGY 2010; 132:206-212. [PMID: 20713140 DOI: 10.1016/j.jep.2010.08.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Revised: 06/30/2010] [Accepted: 08/09/2010] [Indexed: 05/29/2023]
Abstract
AIM OF THE STUDY Red Ginseng roots (Panax ginseng C.A. Meyer) have traditionally been thought to have anti-allergic effects, but their influence on food-induced allergic responses is unclear. MATERIALS AND METHODS This study examined the effects of a Red Ginseng extract on an ova-albumin (OVA)-evoked allergic reaction in mice. RESULTS AND CONCLUSIONS The orally administered extract significantly inhibited the increase in OVA-specific IgG(1) (Th(2)) levels in OVA-sensitized mice, but had no effect on OVA-specific IgE (Th(2)) levels. The extract prevented a reduction in IL-12 production and the ratio of IFN-γ (Th(1)) to IL-4 (Th(2)) in splenocytes, and enhanced small intestinal CD8-, IFN-γ-, and IgA-positive cell numbers in the OVA-sensitized mice. These findings suggest that Red Ginseng inhibits allergic reactions to food by preventing reductions in the ratio of IFN-γ to IL-4 and in IL-12 production induced by dietary antigens in spleen cells, and/or increasing the expression of CD8 and IFN-γ in the small intestine. It may also protect against sensitization to antigens as an immunomodulator by increasing intestinal IgA secretion without affecting antigen-specific IgE levels. In conclusion, Red Ginseng roots may be a natural preventative of food allergies.
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Affiliation(s)
- Maho Sumiyoshi
- Division of Functional Histology, Department of Functional Biomedicine, Ehime University Graduate School of Medicine, Shitsukawa, Toon City, Ehime 791-0295, Japan
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Westbrook AM, Szakmary A, Schiestl RH. Mechanisms of intestinal inflammation and development of associated cancers: lessons learned from mouse models. Mutat Res 2010; 705:40-59. [PMID: 20298806 PMCID: PMC2878867 DOI: 10.1016/j.mrrev.2010.03.001] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Revised: 02/21/2010] [Accepted: 03/08/2010] [Indexed: 12/15/2022]
Abstract
Chronic inflammation is strongly associated with approximately 1/5th of all human cancers. Arising from combinations of factors such as environmental exposures, diet, inherited gene polymorphisms, infections, or from dysfunctions of the immune response, chronic inflammation begins as an attempt of the body to remove injurious stimuli; however, over time, this results in continuous tissue destruction and promotion and maintenance of carcinogenesis. Here we focus on intestinal inflammation and its associated cancers, a group of diseases on the rise and affecting millions of people worldwide. Intestinal inflammation can be widely grouped into inflammatory bowel diseases (ulcerative colitis and Crohn's disease) and celiac disease. Long-standing intestinal inflammation is associated with colorectal cancer and small-bowel adenocarcinoma, as well as extraintestinal manifestations, including lymphomas and autoimmune diseases. This article highlights potential mechanisms of pathogenesis in inflammatory bowel diseases and celiac disease, as well as those involved in the progression to associated cancers, most of which have been identified from studies utilizing mouse models of intestinal inflammation. Mouse models of intestinal inflammation can be widely grouped into chemically induced models; genetic models, which make up the bulk of the studied models; adoptive transfer models; and spontaneous models. Studies in these models have lead to the understanding that persistent antigen exposure in the intestinal lumen, in combination with loss of epithelial barrier function, and dysfunction and dysregulation of the innate and adaptive immune responses lead to chronic intestinal inflammation. Transcriptional changes in this environment leading to cell survival, hyperplasia, promotion of angiogenesis, persistent DNA damage, or insufficient repair of DNA damage due to an excess of proinflammatory mediators are then thought to lead to sustained malignant transformation. With regards to extraintestinal manifestations such as lymphoma, however, more suitable models are required to further investigate the complex and heterogeneous mechanisms that may be at play.
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Affiliation(s)
- Aya M. Westbrook
- Molecular Toxicology Interdepartmental Program, UCLA School of Medicine and School of Public Health, University of California at Los Angeles, Los Angeles, CA 90095
- Department of Pathology and Lab Medicine, UCLA School of Medicine and School of Public Health, University of California at Los Angeles, Los Angeles, CA 90095
| | - Akos Szakmary
- Institute for Cancer Research, Medical University of Vienna, Austria
| | - Robert H. Schiestl
- Molecular Toxicology Interdepartmental Program, UCLA School of Medicine and School of Public Health, University of California at Los Angeles, Los Angeles, CA 90095
- Department of Pathology and Lab Medicine, UCLA School of Medicine and School of Public Health, University of California at Los Angeles, Los Angeles, CA 90095
- Institute for Cancer Research, Medical University of Vienna, Austria
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HIV-1 protease has a genetic T-cell adjuvant effect which is negatively regulated by proteolytic activity. J Virol 2010; 84:7743-9. [PMID: 20484507 DOI: 10.1128/jvi.00747-10] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
HIV protease (PR) mediates the processing of human immunodeficiency virus (HIV) polyproteins and is necessary for the viral production. Recently, HIV PR was shown to possess both cytotoxic and chaperone like activity. We demonstrate here that HIV PR can serve as a genetic adjuvant that enhances the HIV Env and human papillomavirus (HPV) DNA vaccine-induced T-cell response in a dose-dependent manner, only when codelivered with DNA vaccine. Interestingly, the T-cell adjuvant effects of HIV PR were increased by introducing several mutations that inhibited its proteolytic activity, indicating that the adjuvant properties were inversely correlated with its proteolytic activity. Conversely, the introduction of a mutation in the flap region of HIV PR limiting the access to the core domain of HIV PR inhibited the T-cell adjuvant effect, suggesting that the HIV PR chaperone like activity may play a role in mediating T-cell adjuvant properties. A similar adjuvant effect was also observed in adenovirus vaccine, indicating vaccine type independency. These findings suggest that HIV PR can modulate T-cell responses elicited by a gene-based vaccine positively by inherent chaperone like activity and negatively by its proteolytic activity.
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Hacini-Rachinel F, Nancey S, Boschetti G, Sardi F, Doucet-Ladevèze R, Durand PY, Flourié B, Kaiserlian D. CD4+ T cells and Lactobacillus casei control relapsing colitis mediated by CD8+ T cells. THE JOURNAL OF IMMUNOLOGY 2009; 183:5477-86. [PMID: 19843933 DOI: 10.4049/jimmunol.0804267] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Evidence that CD4(+) regulatory T cells can control Ag-specific CD8(+) T cell-mediated colitis in immunocompetent mice is poorly documented. To examine the potential of CD4(+) T cells to control colitis, we used our model of CD8(+) T cell-mediated colitis induced by intracolonic sensitization followed by challenge with the hapten 2,4-dinitrobenzene sulfonic acid. The defect of CD4(+) T cells in MHC class II-deficient (Abeta(degrees/degrees)) mice allowed priming of 2,4-dinitrobenzene sulfonic acid-specific IFN-gamma-producing CD8 colitogenic effectors and development of colitis in the otherwise resistant C57BL/6 strain. Cotransfer experiments in RAG2(degrees/degrees) mice and ex vivo studies showed that CD4(+)CD25(+) T cells completely prevented CD8(+) T cell-mediated colitis and controlled CD8(+) T cell activation, respectively. In the susceptible BALB/c strain, Ab depletion revealed that lack of CD4(+) regulatory T cells resulted in 1) acute colitis elicited by a suboptimal dose of hapten challenge and 2) more severe relapsing episodes of colitis induced by effector/memory CD8(+) T cell-mediated colitis at an optimal dose of hapten challenge, even when CD4 depletion was performed just before the second challenge. Oral administration of the probiotic strain Lactobacillus casei DN-114 001 alleviated colitis and increased the suppressive function of Foxp3(+)CD4(+) regulatory T cells of colon lamina propria. These data demonstrate that CD4(+) regulatory T cells exert a protective effect on colitis by controlling colitogenic effector/memory CD8(+) T cells during the effector (symptomatic) phase of acute and relapsing colitis, respectively. Probiotics with natural adjuvant effects on mucosal regulatory T cells may represent a valuable approach to alleviate the colitogenic effect of Tc1-type CD8(+) effectors.
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35
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Westendorf AM, Fleissner D, Hansen W, Buer J. T cells, dendritic cells and epithelial cells in intestinal homeostasis. Int J Med Microbiol 2009; 300:11-8. [PMID: 19781991 DOI: 10.1016/j.ijmm.2009.08.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The mucosal immune system of the intestinal tract is continuously exposed to both potential pathogens and beneficial commensal microorganism. A variety of mechanisms contribute to the ability of the gut to either react or remain tolerant to antigen present in the intestinal lumen. Antigens of the gut commensals are not simply ignored, but rather trigger an active immunosuppressive process, which prevents the outcome of immunopathology. The aim of this review is to provide an update on the mechanism of intestinal homeostasis, with particular focus on the complex crosstalk between T cells, dendritic cells and intestinal epithelial cells.
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Affiliation(s)
- Astrid M Westendorf
- Institute of Medical Microbiology, University Hospital Essen, Hufelandstrasse 55, D-45122 Essen, Germany.
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36
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Yan Y, Kolachala V, Dalmasso G, Nguyen H, Laroui H, Sitaraman SV, Merlin D. Temporal and spatial analysis of clinical and molecular parameters in dextran sodium sulfate induced colitis. PLoS One 2009; 4:e6073. [PMID: 19562033 PMCID: PMC2698136 DOI: 10.1371/journal.pone.0006073] [Citation(s) in RCA: 297] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Accepted: 06/03/2009] [Indexed: 02/07/2023] Open
Abstract
Background Inflammatory bowel diseases (IBD), including mainly ulcerative colitis (UC) and Crohn's disease (CD), are inflammatory disorders of the gastrointestinal tract caused by an interplay of genetic and environmental factors. Murine colitis model induced by Dextran Sulfate Sodium (DSS) is an animal model of IBD that is commonly used to address the pathogenesis of IBD as well as to test efficacy of therapies. In this study we systematically analyzed clinical parameters, histological changes, intestinal barrier properties and cytokine profile during the colitic and recovery phase. Methods C57BL/6 mice were administered with 3.5% of DSS in drinking water for various times. Clinical and histological features were determined using standard criteria. Myeloperoxidase (MPO) activity, transepithelial permeability and proinflammatory mediators were determined in whole colon or proximal and distal parts of colon. Results As expected after administration of DSS, mice manifest loss of body weight, shortening of colon length and bloody feces. Histological manifestations included shortening and loss of crypts, infiltration of lymphocytes and neutrophil, symptoms attenuated after DSS withdrawal. The MPO value, as inflammation indicator, also increases significantly at all periods of DSS treatment, and even after DSS withdrawal, it still held at very high levels. Trans-mucosal permeability increased during DSS treatment, but recovered to almost control level after DSS withdrawal. The production of proinflammatory mediators by colonic mucosa were enhanced during DSS treatment, and then recovered to pre-treated level after DSS withdrawal. Finally, enhanced expression of proinflammatory mediators also revealed a different profile feature in proximal and distal parts of the colon. Conclusion Experimental colitis induced by DSS is a good animal model to study the mechanisms underlying the pathogenesis and intervention against IBD, especially UC.
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Affiliation(s)
- Yutao Yan
- Division of Digestive Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA.
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Rajaiah R, Moudgil KD. Heat-shock proteins can promote as well as regulate autoimmunity. Autoimmun Rev 2008; 8:388-93. [PMID: 19121415 DOI: 10.1016/j.autrev.2008.12.004] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Accepted: 12/10/2008] [Indexed: 01/12/2023]
Abstract
Heat-shock proteins (Hsps) are among the most highly conserved and immunogenic proteins shared by microbial agents and mammals. Under physiological conditions, the ubiquitously distributed Hsps maintain the integrity and function of other cellular proteins when cells are exposed to stressful stimuli. However, owing to their conserved nature and stress inducibility, Hsps may become targets of immune response. The T cells and/or antibodies induced by a microbial Hsp may crossreact with the corresponding mammalian Hsp (molecular mimicry) and trigger an autoimmune response, which if unchecked can lead to immune pathology and clinical manifestations. Furthermore, enhanced expression of Hsp under stress can unveil previously hidden antigenic determinants that can initiate and perpetuate autoimmune reactivity. Also, the innate immune mechanisms activated by an Hsp can reinforce and even direct the type of adaptive immune response to that protein. Hsps have been implicated in the induction and propagation of autoimmunity in several diseases, including rheumatoid arthritis, atherosclerosis and type 1 diabetes. However, Hsps possess immunoregulatory attributes as well and therefore, are being exploited for immunomodulation of various immune-mediated disorders.
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Affiliation(s)
- Rajesh Rajaiah
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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Goulart LR, Goulart IMB. Leprosy pathogenetic background: a review and lessons from other mycobacterial diseases. Arch Dermatol Res 2008; 301:123-37. [PMID: 19043725 DOI: 10.1007/s00403-008-0917-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Accepted: 11/06/2008] [Indexed: 11/27/2022]
Abstract
Leprosy is a disease caused by Mycobacterium leprae that initially affects the peripheral nervous system with patients exhibiting contrasting clinical, immunological, and pathological manifestations despite minimal genetic variation among bacilli isolates. Its clinical manifestations are related to M. leprae survival, innate and acquired immune responses, and interactions between host and bacterial proteins, preventing their invasion and infection, or promoting their development and pathogenesis. The complex molecular interactions in affected individuals influenced by the pathogenetic background will be explored in this review. However, the great genetic diversity imposes difficulty for understanding disease development, and it is likely that many factors and metabolic pathways regulating the immense and contrasting symptomatology will yet be revealed. Four pathways may play a central role in leprosy, including the TLR/LIR-7, VDR, TNF-alpha, and TGF-beta1 for which a large amount of gene polymorphisms have been described that could potentially affect the clinical outcome. Cross-talk pathways may significantly change the course of the disease, depending on the specific disequilibrium of genic homeostasis, which is highly dependent on the environment, antigens that are presented to the host cell, and specific polymorphisms that interact with other genes, external factors, and pathogen survival, culminating in leprosy occurrence. Currently, the microarray-based genomic survey of gene polymorphisms, multiple gene expression analyses, and proteomic technologies, such as mass spectrometry and phage display applied in the discovery of antigens, represent a great potential for evaluating individual responses of leprosy patients and contacts to predict the outcome and progression of the disease. At present, none of the genes is good prognostic marker; however, in the near future we may use multiple targets to predict infection and leprosy development.
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Affiliation(s)
- Luiz Ricardo Goulart
- National Reference Center of Sanitary Dermatology and Leprosy, Clínic's Hospital, School of Medicine, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil.
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Haile LA, von Wasielewski R, Gamrekelashvili J, Krüger C, Bachmann O, Westendorf AM, Buer J, Liblau R, Manns MP, Korangy F, Greten TF. Myeloid-derived suppressor cells in inflammatory bowel disease: a new immunoregulatory pathway. Gastroenterology 2008; 135:871-81, 881.e1-5. [PMID: 18674538 DOI: 10.1053/j.gastro.2008.06.032] [Citation(s) in RCA: 233] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2008] [Revised: 05/13/2008] [Accepted: 06/05/2008] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS CD11b(+)Gr-1(+) myeloid-derived suppressor cells (MDSCs) have been shown to cause T-cell tolerance in tumor-bearing mice; however, little is known about the role of MDSCs in chronic inflammation. Here, for the first time, we have identified and analyzed their role in inflammatory bowel disease (IBD). METHODS Repetitive adoptive transfer of clone 4/T-cell receptor (CL4-TCR) transgenic CD8(+) T cells into VILLIN-hemagglutinin (HA) transgenic mice was performed on days 1, 12, and 27. Recipient mice were analyzed for immunopathology, HA-specific CD8(+) T-cell responses, and CD11b(+)Gr-1(+) MDSCs (frequency, phenotype, expression analysis, and in vitro as well as in vivo function). In addition, peripheral blood from patients with active Crohn's disease and ulcerative colitis was examined for the presence and function of human MDSCs denoted as CD14(+)HLA-DR(-/low) cells. RESULTS Repetitive transfer of HA-specific CD8(+) T cells prevented VILLIN-HA recipient mice from development of severe enterocolitis, which is seen after a single transfer of T cells. Repeated transfer of antigen-specific T cells led to an increase in the frequency of nitric oxide synthase 2 and arginase-expressing CD11b(+)Gr-1(+) MDSCs in spleen and intestine of VILLIN-HA mice with immunosuppressive function. Cotransfer of MDSCs with HA-specific CD8(+) T cells into naive VILLIN-HA mice ameliorated enterocolitis, indicating a direct immune regulatory effect of MDSCs on induction of IBD by antigen-specific T cells. Finally, an increase in the frequency of human MDSCs with suppressor function was observed in peripheral blood from patients with IBD. CONCLUSIONS These results identify MDSCs as a new immune regulatory pathway in IBD.
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Affiliation(s)
- Lydia A Haile
- Department of Gastroenterology, Hepatology and Endocrinology, Medical School Hannover, Hannover, Germany
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Mizoguchi A, Mizoguchi E. Inflammatory bowel disease, past, present and future: lessons from animal models. J Gastroenterol 2008; 43:1-17. [PMID: 18297430 DOI: 10.1007/s00535-007-2111-3] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2007] [Accepted: 08/29/2007] [Indexed: 02/04/2023]
Abstract
Accumulating data from animal models indicate that Inflammatory bowel disease (IBD) is mediated by a much more complicated mechanism than previously predicted. For example, the role of an individual molecule in the pathogenesis of IBD distinctly differs depending on several factors, including the fundamental mechanism of induction of the disease, the target cell type, the phase of disease, and the environment. Therefore, it has been difficult in the past to fully explain the complicated mechanism. Novel concepts have recently been proposed to further explain the complicated mechanism of IBD. In this review, we introduce past, current, and possible future concepts for IBD models regarding T helper (Th) 1, Th2, and Th17, antigen sampling and presentation, regulatory cell networks, NOD2, Toll-like receptors, bacteria/epithelia interaction, stem cells, autophagy, microRNAs, and glycoimmunology, and we also discuss the relevance of these new concepts, developed at the bench (in animal models), to the bedside.
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Affiliation(s)
- Atsushi Mizoguchi
- Department of Pathology, Experimental Pathology, Simches 8234, Massachusetts General Hospital, 185 Cambridge Street, Boston, MA 02114, USA
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Coelho V, Broere F, Binder RJ, Shoenfeld Y, Moudgil KD. Heat-shock proteins: inflammatory versus regulatory attributes. Cell Stress Chaperones 2008; 13:119-25. [PMID: 18758999 PMCID: PMC2673889 DOI: 10.1007/s12192-008-0018-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 01/09/2008] [Accepted: 01/11/2008] [Indexed: 12/25/2022] Open
Affiliation(s)
- Verônica Coelho
- Heart Institute (InCor) University of São Paulo Medical School, and Institute for Investigation in Immunology-Millennium Institute, São Paulo, Brazil
| | - Femke Broere
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Robert J. Binder
- Department of Immunology, University of Pittsburgh, Pittsburgh, PA USA
| | - Yehuda Shoenfeld
- Department of Medicine ‘B’ and Center for Autoimmune Diseases, Sheba Medical Center (affiliated to Tel-Aviv University), Israelheba Medical Center, Tel Hashomer, Israel
| | - Kamal D. Moudgil
- Department of Microbiology and Immunology, and Division of Rheumatology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD USA
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Rijnierse A, Nijkamp FP, Kraneveld AD. Mast cells and nerves tickle in the tummy: implications for inflammatory bowel disease and irritable bowel syndrome. Pharmacol Ther 2007; 116:207-35. [PMID: 17719089 DOI: 10.1016/j.pharmthera.2007.06.008] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2007] [Accepted: 06/20/2007] [Indexed: 12/12/2022]
Abstract
Mast cells are well known as versatile cells capable of releasing and producing a variety of inflammatory mediators upon activation and are often found in close proximity of neurons. In addition, inflammation leads to local activation of neurons resulting in the release neuropeptides, which also play an important immune modulatory role by stimulation of immune cells. In intestinal disorders like inflammatory bowel disease (IBD) and irritable bowel syndrome (IBS), the number of mast cells is known to be much higher than in the normal intestine. Moreover, both these disorders are also reported to be associated with alterations in neuropeptide content and in neural innervation. Mutual association between mast cells and enteric nerves has been demonstrated to be increased in pathophysiological conditions and contribute to spreading and amplification of the response in IBD and IBS. In this review the focus lies on studies appointed to the direct interaction between mast cells and nerves in IBD, IBS, and animal models for these disorders so far.
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Affiliation(s)
- Anneke Rijnierse
- Department of Pharmacology and Pathophysiology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, The Netherlands.
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Kimura Y, Sumiyoshi M, Suzuki T, Suzuki T, Sakanaka M. Inhibitory effects of water-soluble low-molecular-weight beta-(1,3-1,6) d-glucan purified from Aureobasidium pullulans GM-NH-1A1 strain on food allergic reactions in mice. Int Immunopharmacol 2007; 7:963-72. [PMID: 17499199 DOI: 10.1016/j.intimp.2007.03.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2006] [Revised: 03/02/2007] [Accepted: 03/11/2007] [Indexed: 11/24/2022]
Abstract
There have been a number of reports showing that the crude beta-glucan fraction prepared from various kinds of Basidiomycetes mushrooms acts as anti-cancer and anti-allergic reagent through stimulation of IFN-gamma production. It has been reported, however, that the exposure of the airway to beta-(1,3) d-glucan, contained in house dust, indoor moulds and some bacteria, potentiates the airway allergic response. It seems likely that the discrepant effects on immune function may be related to such factors as differences of the administration route, average molecular weight and water solubility. We isolated a new low-molecular-weight (about 100 kDa) beta-glucan from Aureobasidium pullulans 1A1 strain of black yeast, and found that it had low viscosity and was water-soluble. In this study, we examined the effects of water-soluble low-molecular-weight beta-(1-->3) and 50-80% branched beta-(1-->6) glucan (LMW-beta-Glucan) isolated from A. pullulans on the ova-albumin (OVA)-treated allergic reaction in mice. Feeding standard laboratory diets containing 0.5 and 1% LMW-beta-Glucan significantly inhibited the OVA-specific IgE elevation compared to that in OVA-sensitized mice fed standard laboratory diet alone (control). Furthermore, feeding standard laboratory diets containing 0.5 and 1% LMW-beta-Glucan inhibited the reduction of IL-12 and IFN-gamma production from splenocytes and the reduction of CD8- and IFN-gamma-positive cell number in the small intestine of the OVA-sensitized mice. These findings suggest that anti-food allergic action of LMW-beta-Glucan may be due to the inducing IFN-gamma production in the small intestine and splenocytes.
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Affiliation(s)
- Yoshiyuki Kimura
- Division of Biochemical Pharmacology, Department of Basic Medical Research, Graduate School of Medicine, Ehime University, Shitsukawa, Toon-City, Ehime 791-0295, Japan.
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Westendorf AM, Fleissner D, Deppenmeier S, Gruber AD, Bruder D, Hansen W, Liblau R, Buer J. Autoimmune-mediated intestinal inflammation-impact and regulation of antigen-specific CD8+ T cells. Gastroenterology 2006; 131:510-24. [PMID: 16890605 DOI: 10.1053/j.gastro.2006.05.015] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2005] [Accepted: 05/04/2006] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS Few data exist regarding mechanisms of mucosal CD8+ T-cell reactivity to epithelial-specific antigen. To dissect the immunologic mechanisms underlying CD8+ T-cell dysregulation, reactivity to a self-antigen expressed in intestinal epithelium of mice bearing a major histocompatibility complex class I-restricted T-cell receptor specific for this antigen was studied. In addition, antigen-specific regulatory CD4+ T cells induced in vivo were tested to control these autoreactive CD8+ T cells. METHODS Transgenic VILLIN-HA mice were mated with CL4-TCR transgenic mice. Alternatively, adoptive transfer of CL4-TCR transgenic CD8+ T cells into VILLIN-HA transgenic mice was performed to mimic spontaneous encounter of neoantigen. Mucosal CD8+ T cells were characterized under different conditions of tolerance, immunopathology, and active immunosuppression. RESULTS Transgenic CD8+ T cells from VILLIN-HA x CL4-TCR transgenic mice preferentially migrated and expanded in mucosal lymphoid tissues. Although transgenic CD8+ T cells showed signs of T-cell activation, they failed to cause tissue damage. This was accompanied by the induction/expansion of CD4+ and CD8+, Foxp3-expressing T cells. In contrast, adoptive transfer of naive transgenic CD8+ T cells from CL4-TCR transgenic mice into VILLIN-HA transgenic mice induced severe intestinal inflammation with poor clinical course of disease. Transgenic CD8+ T cells secreted vigorous amounts of proinflammatory cytokines like interferon gamma/tumor necrosis factor alpha. Strikingly, this acute wasting disease was significantly ameliorated by cotransfer of antigen-specific regulatory CD4+ T cells. CONCLUSIONS Epithelial-specific antigen expression is sufficient to trigger severe antigen-specific CD8+ T-cell-mediated intestinal inflammation; this might be controlled by antigen-specific regulatory T cells under physiological conditions.
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Affiliation(s)
- Astrid Maria Westendorf
- Department of Mucosal Immunity, German Research Centre for Biotechnology, Braunschweig, Germany.
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Nancey S, Holvöet S, Graber I, Joubert G, Philippe D, Martin S, Nicolas JF, Desreumaux P, Flourié B, Kaiserlian D. CD8+ cytotoxic T cells induce relapsing colitis in normal mice. Gastroenterology 2006; 131:485-96. [PMID: 16890603 DOI: 10.1053/j.gastro.2006.05.018] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2005] [Accepted: 04/20/2006] [Indexed: 12/02/2022]
Abstract
BACKGROUND & AIMS Most mouse models of IBD have emphasized an effector role of type-1 CD4+ T cells in colitis. The aim of this study was to develop a model of antigen-specific relapsing colitis to investigate the relative contribution of CD4+ and CD8+ effectors. METHODS Balb/C mice were sensitized and challenged with a suboptimal dose of 2.4 dinitrobenzene sulfonic acid to generate a colonic delayed-type hypersensitivity response. The respective role of CD4+ and CD8+ T cells in the initiation of colitis was analyzed by in vivo monoclonal antibody depletion and cell-transfer experiments. Dynamic and function of the colitogenic effectors were studied by immunohistochemistry, fluorescence-activated cell sorter analysis, enzyme-linked immunospot assay, quantitative polymerase chain reaction, and in vivo CTL assays. RESULTS Relapsing colitis rapidly occurred only after challenge of previously sensitized mice. Interferon-gamma-producing cytotoxic CD8+ T cells (Tc1) specific for hapten-modified self-proteins were generated in colon-draining lymph nodes on day 5 after sensitization, before the onset of disease. These CD8+ T cells were rapidly recruited upon challenge into colon lamina propria as granzyme B-expressing effectors exerting ex vivo cytotoxicity against syngeneic hapten-modified colonic epithelial cells. Colitis was prevented by in vivo antibody depletion of CD8+, but not of CD4+, T cells and could be induced in naive recipients within 48 hours after transfer of CD8+, but not CD4+, T cells purified from sensitized mice. CONCLUSIONS Our data show that antigen-specific CD8+ T cells can induce relapsing colitis in normal mice and suggest that the cytolytic function of CD8 Tc1 against epithelial cells may initiate the intestinal inflammatory process.
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Affiliation(s)
- Stéphane Nancey
- INSERM U 404 Immunité et Vaccination, CERVI, IFR 128 Biosciences Lyon-Gerland, Lyon, F-69007, France
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Otaka M, Odashima M, Watanabe S. Role of heat shock proteins (molecular chaperones) in intestinal mucosal protection. Biochem Biophys Res Commun 2006; 348:1-5. [PMID: 16875664 DOI: 10.1016/j.bbrc.2006.07.028] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2006] [Accepted: 07/10/2006] [Indexed: 02/07/2023]
Abstract
Most studies into the pathogenesis of inflammatory bowel diseases (IBD) have primarily focused on the cytotoxic agents and processes involved in producing mucosal injury, including the immune system. However, less consideration has been given to the inherent mechanisms of cytoprotection and cellular repair in the intestinal mucosa. This review will focus on intestinal mucosal protection against cytotoxic agents and cellular stress mainly from the viewpoint of expression and function of heat shock proteins, in their role of "molecular chaperones," as internal cytoprotectants. Elucidation of such stress-responses in the intestinal mucosa may provide a better understanding of the mechanisms of cytoprotection and cellular repair, and present new strategies for IBD therapy.
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Affiliation(s)
- Michiro Otaka
- Department of Internal Medicine and Gastroenterology, Akita University School of Medicine, Akita 010-8543, Japan.
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Aceituno M, Panés J. Patogenia e inmunoterapia de la enfermedad inflamatoria intestinal: lecciones de los modelos animales. GASTROENTEROLOGIA Y HEPATOLOGIA 2005; 28:576-90. [PMID: 16277967 DOI: 10.1157/13080611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- M Aceituno
- Servicio de Gastroenterología, Institut de Malalties Digestives i Metabòliques, Hospital Clínic, IDIBAPS, Barcelona, Spain
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Walter U, Santamaria P. CD8+ T cells in autoimmunity. Curr Opin Immunol 2005; 17:624-31. [PMID: 16226438 DOI: 10.1016/j.coi.2005.09.014] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2005] [Accepted: 09/20/2005] [Indexed: 10/25/2022]
Abstract
Mounting evidence shows that CD8(+) T cells contribute to the initiation, progression and regulation of several pathogenic autoimmune responses in which these cells were not previously thought to play a major role. CD8(+) T cells can kill target cells directly, by recognizing peptide-MHC complexes on target cells, or indirectly, by secreting cytokines capable of signaling through death receptors expressed on the target cell surface. Autoreactive CD8(+) T cells can also contribute to autoimmunity by releasing cytokines capable of increasing the susceptibility of target cells to cytotoxicity, or by secreting chemokines that attract other immune cells to the site of autoimmunity. Autoreactive CD8(+) T cells can also downregulate autoimmune responses. Recent important advances include a mechanistic understanding of events leading to the activation and recruitment of autoreactive CD8(+) T cells in certain autoimmune responses and a greater appreciation of the diverse roles that these T cells play in autoimmunity.
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Affiliation(s)
- Ulrich Walter
- Julia McFarlane Diabetes Research Centre and Department of Microbiology and Infectious Diseases, Faculty of Medicine, The University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
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Friese MA, Fugger L. Autoreactive CD8+ T cells in multiple sclerosis: a new target for therapy? Brain 2005; 128:1747-63. [PMID: 15975943 DOI: 10.1093/brain/awh578] [Citation(s) in RCA: 170] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Multiple sclerosis afflicts more than 1 million individuals worldwide and is widely considered to be an autoimmune disease. Traditionally, CD4(+) T helper cells have almost exclusively been held responsible for its immunopathogenesis, partly because certain MHC class II alleles clearly predispose for developing multiple sclerosis and also, because of their importance in inducing experimental autoimmune encephalomyelitis (EAE), the animal model for multiple sclerosis. However, several strategies that target CD4(+) T cells beneficially in EAE have failed to ameliorate disease activity in multiple sclerosis, and some have even triggered exacerbations. Recently, the potential importance of CD8(+) T cells has begun to emerge. Physiologically, CD8(+) T cells are essential for detecting and eliminating abnormal cells, whether infected or neoplastic. In multiple sclerosis, genetic associations with MHC class I alleles have now been established, and CD8(+) as well as CD4(+) T cells have been found to invade and clonally expand in inflammatory central nervous system plaques. Recent animal models induced by CD8(+) T cells show interesting similarities to multiple sclerosis, in particular, in lesion distribution (more inflammation in the brain relative to the spinal cord), although not all of the features of the human disease are recapitulated. Here we outline the arguments for a possible role for CD8(+) T cells, a lymphocyte subset that has long been underrated in multiple sclerosis and should now be considered in new therapeutic approaches.
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Affiliation(s)
- Manuel A Friese
- MRC Human Immunology Unit and Department of Clinical Neurology, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DS, UK
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