1
|
Eeckhout E, Asaoka T, Van Gorp H, Demon D, Girard-Guyonvarc’h C, Andries V, Vereecke L, Gabay C, Lamkanfi M, van Loo G, Wullaert A. The autoinflammation-associated NLRC4 V341A mutation increases microbiota-independent IL-18 production but does not recapitulate human autoinflammatory symptoms in mice. Front Immunol 2023; 14:1272639. [PMID: 38090573 PMCID: PMC10713841 DOI: 10.3389/fimmu.2023.1272639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 11/13/2023] [Indexed: 12/18/2023] Open
Abstract
Background Autoinflammation with infantile enterocolitis (AIFEC) is an often fatal disease caused by gain-of-function mutations in the NLRC4 inflammasome. This inflammasomopathy is characterized by macrophage activation syndrome (MAS)-like episodes as well as neonatal-onset enterocolitis. Although elevated IL-18 levels were suggested to take part in driving AIFEC pathology, the triggers for IL-18 production and its ensuing pathogenic effects in these patients are incompletely understood. Methods Here, we developed and characterized a novel genetic mouse model expressing a murine version of the AIFEC-associated NLRC4V341A mutation from its endogenous Nlrc4 genomic locus. Results NLRC4V341A expression in mice recapitulated increased circulating IL-18 levels as observed in AIFEC patients. Housing NLRC4V341A-expressing mice in germfree (GF) conditions showed that these systemic IL-18 levels were independent of the microbiota, and unmasked an additional IL-18-inducing effect of NLRC4V341A expression in the intestines. Remarkably, elevated IL-18 levels did not provoke detectable intestinal pathologies in NLRC4V341A-expressing mice, even not upon genetically ablating IL-18 binding protein (IL-18BP), which is an endogenous IL-18 inhibitor that has been used therapeutically in AIFEC. In addition, NLRC4V341A expression did not alter susceptibility to the NLRC4-activating gastrointestinal pathogens Salmonella Typhimurium and Citrobacter rodentium. Conclusion As observed in AIFEC patients, mice expressing a murine NLRC4V341A mutant show elevated systemic IL-18 levels, suggesting that the molecular mechanisms by which this NLRC4V341A mutant induces excessive IL-18 production are conserved between humans and mice. However, while our GF and infection experiments argue against a role for commensal or pathogenic bacteria, identifying the triggers and mechanisms that synergize with IL-18 to drive NLRC4V341A-associated pathologies will require further research in this NLRC4V341A mouse model.
Collapse
Affiliation(s)
- Elien Eeckhout
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
| | - Tomoko Asaoka
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
| | - Hanne Van Gorp
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
| | - Dieter Demon
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
| | - Charlotte Girard-Guyonvarc’h
- Division of Rheumatology, Department of Medicine, University Hospital of Geneva, Department of Pathology and Immunology, University of Geneva Faculty of Medicine, Geneva, Switzerland
| | - Vanessa Andries
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
| | - Lars Vereecke
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
| | - Cem Gabay
- Division of Rheumatology, Department of Medicine, University Hospital of Geneva, Department of Pathology and Immunology, University of Geneva Faculty of Medicine, Geneva, Switzerland
| | - Mohamed Lamkanfi
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Geert van Loo
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Andy Wullaert
- Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, VIB, Ghent, Belgium
- Laboratory of Proteinscience, Proteomics and Epigenetic Signalling (PPES), Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| |
Collapse
|
2
|
Yang CR, Wei Q, Jiang M, Zhang XB, Zhang ZX, Nong GM. [Hoyeraal-Hreidarsson syndrome with combined immunodeficiency and enterocolitis caused by a DCK1 gene variant]. Zhonghua Er Ke Za Zhi 2022; 60:248-249. [PMID: 35240749 DOI: 10.3760/cma.j.cn112140-20220117-00055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- C R Yang
- Department of Pediatrics, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Q Wei
- Department of Pediatrics, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - M Jiang
- Department of Pediatrics, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - X B Zhang
- Department of Pediatrics, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - Z X Zhang
- Department of Pediatrics, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| | - G M Nong
- Department of Pediatrics, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China
| |
Collapse
|
3
|
Nakase H. [MEFV gene-associated with enterocolitis]. Nihon Shokakibyo Gakkai Zasshi 2022; 119:210-216. [PMID: 35264484 DOI: 10.11405/nisshoshi.119.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Hiroshi Nakase
- Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine
| |
Collapse
|
4
|
Bhunyakarnjanarat T, Udompornpitak K, Saisorn W, Chantraprapawat B, Visitchanakun P, Dang CP, Issara-Amphorn J, Leelahavanichkul A. Prominent Indomethacin-Induced Enteropathy in Fcgriib Defi-cient lupus Mice: An Impact of Macrophage Responses and Immune Deposition in Gut. Int J Mol Sci 2021; 22:1377. [PMID: 33573095 PMCID: PMC7866536 DOI: 10.3390/ijms22031377] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/19/2021] [Accepted: 01/23/2021] [Indexed: 02/06/2023] Open
Abstract
A high dose of NSAIDs, a common analgesic, might induce lupus activity through several NSAIDs adverse effects including gastrointestinal permeability defect (gut leakage) and endotoxemia. Indomethacin (25 mg/day) was orally administered for 7 days in 24-wk-old Fc gamma receptor IIb deficient (FcgRIIb-/-) mice, an asymptomatic lupus model (increased anti-dsDNA without lupus nephritis), and age-matched wild-type (WT) mice. Severity of indomethacin-induced enteropathy in FcgRIIb-/- mice was higher than WT mice as demonstrated by survival analysis, intestinal injury (histology, immune-deposition, and intestinal cytokines), gut leakage (FITC-dextran assay and endotoxemia), serum cytokines, and lupus characteristics (anti-dsDNA, renal injury, and proteinuria). Prominent responses of FcgRIIb-/- macrophages toward lipopolysaccharide (LPS) compared to WT cells due to the expression of only activating-FcgRs without inhibitory-FcgRIIb were demonstrated. Extracellular flux analysis indicated the greater mitochondria activity (increased respiratory capacity and respiratory reserve) in FcgRIIb-/- macrophages with a concordant decrease in glycolysis activity when compared to WT cells. In conclusion, gut leakage-induced endotoxemia is more severe in indomethacin-administered FcgRIIb-/- mice than WT, possibly due to the enhanced indomethacin toxicity from lupus-induced intestinal immune-deposition. Due to a lack of inhibitory-FcgRIIb expression, mitochondrial function, and cytokine production of FcgRIIb-/- macrophages were more prominent than WT cells. Hence, lupus disease-activation from NSAIDs-enteropathy-induced gut leakage is possible.
Collapse
Affiliation(s)
- Thansita Bhunyakarnjanarat
- Medical Microbiology, Interdisciplinary and International Program, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand;
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Kanyarat Udompornpitak
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Wilasinee Saisorn
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Bhumdhanin Chantraprapawat
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Peerapat Visitchanakun
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Cong Phi Dang
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Jiraphorn Issara-Amphorn
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Asada Leelahavanichkul
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
- Department of Microbiology, Immunology Unit, Chulalongkorn University, Bangkok 10330, Thailand
| |
Collapse
|
5
|
Swan DJ, Aschenbrenner D, Lamb CA, Chakraborty K, Clark J, Pandey S, Engelhardt KR, Chen R, Cavounidis A, Ding Y, Krasnogor N, Carey CD, Acres M, Needham S, Cant AJ, Arkwright PD, Chandra A, Okkenhaug K, Uhlig HH, Hambleton S. Immunodeficiency, autoimmune thrombocytopenia and enterocolitis caused by autosomal recessive deficiency of PIK3CD-encoded phosphoinositide 3-kinase δ. Haematologica 2019; 104:e483-e486. [PMID: 31073077 PMCID: PMC6886442 DOI: 10.3324/haematol.2018.208397] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- David J Swan
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne
| | - Dominik Aschenbrenner
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, Oxford
| | - Christopher A Lamb
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne
| | | | | | - Sumeet Pandey
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, Oxford
| | - Karin R Engelhardt
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne
| | - Rui Chen
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne
| | - Athena Cavounidis
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, Oxford
| | - Yuchun Ding
- School of Computing Science, Newcastle University, Newcastle upon Tyne
| | - Natalio Krasnogor
- School of Computing Science, Newcastle University, Newcastle upon Tyne
| | | | - Meghan Acres
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne
| | - Stephanie Needham
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne
| | - Andrew J Cant
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne
| | - Peter D Arkwright
- University of Manchester & Department of Paediatric Allergy & Immunology, Royal Manchester Children's Hospital, Manchester
| | - Anita Chandra
- Babraham Institute, Cambridge
- Department of Medicine, University of Cambridge, Cambridge
| | - Klaus Okkenhaug
- Babraham Institute, Cambridge
- Division of Immunology, Department of Pathology, University of Cambridge, Cambridge
| | - Holm H Uhlig
- Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford, Oxford
- Department of Paediatrics, University of Oxford, Oxford
- Oxford NIHR Biomedical Research Centre, Oxford, UK
| | - Sophie Hambleton
- Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne
| |
Collapse
|
6
|
Cheng ZF, Cartwright CA. Rack1 maintains intestinal homeostasis by protecting the integrity of the epithelial barrier. Am J Physiol Gastrointest Liver Physiol 2018; 314:G263-G274. [PMID: 29025732 PMCID: PMC5866421 DOI: 10.1152/ajpgi.00241.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/21/2017] [Accepted: 09/29/2017] [Indexed: 01/31/2023]
Abstract
Previously, we generated mouse models of Rack1 deficiency to identify key functions for Rack1 in regulating growth of intestinal epithelia: suppressing crypt cell proliferation and regeneration, promoting differentiation and apoptosis, and repressing development of neoplasia. However, other than low body weight, we did not detect an overt phenotype in mice constitutively deleted of Rack1 in intestinal epithelia ( vil-Cre: Rack1fl/fl mice), presumably because Rack1 was deleted in <10% of the total surface area of the epithelia. To assess the effect of Rack1 loss throughout the entire intestinal epithelia, we generated another mouse model of Rack1 deficiency, vil-Cre-ERT2: Rack1fl/fl. Within 5-10 days of the initial tamoxifen treatment, the mice lost over 20% of their body weight, developed severe diarrhea that for some was bloody, became critically ill, and died, if not euthanized. Necropsies revealed mildly distended, fluid-, gas-, and sometimes blood-filled loops of small and large bowel, inguinal lymphadenopathy, and thrombocytosis. Rack1 was deleted in nearly 100% of the epithelia in both the small intestine and colon when assessed by immunofluorescent or immunoblot analyses. Rack1 expression in other tissues and organs was not different than in control mice, indicating tissue specificity of the recombination. Histopathology revealed a patchy, erosive, hemorrhagic, inflammatory enterocolitis with denuded, sloughed off surface epithelium, and crypt hyperplasia. These results suggest a protective function for Rack1 in maintaining the integrity of intestinal epithelia and for survival. NEW & NOTEWORTHY Our findings reveal a novel function for Rack1 in maintaining intestinal homeostasis by protecting the epithelial barrier. Rack1 loss results in a patchy, erosive, hemorrhagic, inflammatory enterocolitis, which resembles that of inflammatory bowel diseases (IBD) in humans. Understanding mechanisms that protect barrier function in normal intestine and how loss of that protection contributes to the pathogenesis of IBD could lead to improved therapies for these and other erosive diseases of the gastrointestinal tract.
Collapse
Affiliation(s)
- Zhuan-Fen Cheng
- Department of Medicine, Stanford University , Stanford, California
| | | |
Collapse
|
7
|
Li Y, Poroyko V, Yan Z, Pan L, Feng Y, Zhao P, Xie Z, Hong L. Characterization of Intestinal Microbiomes of Hirschsprung's Disease Patients with or without Enterocolitis Using Illumina-MiSeq High-Throughput Sequencing. PLoS One 2016; 11:e0162079. [PMID: 27603009 PMCID: PMC5014423 DOI: 10.1371/journal.pone.0162079] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 08/17/2016] [Indexed: 02/07/2023] Open
Abstract
Hirschsprung-associated enterocolitis (HAEC) is a life-threatening complication of Hirschsprung's disease (HD). Although the pathological mechanisms are still unclear, studies have shown that HAEC has a close relationship with the disturbance of intestinal microbiota. This study aimed to investigate the characteristics of the intestinal microbiome of HD patients with or without enterocolitis. During routine or emergency surgery, we collected 35 intestinal content samples from five patients with HAEC and eight HD patients, including three HD patients with a history of enterocolitis who were in a HAEC remission (HAEC-R) phase. Using Illumina-MiSeq high-throughput sequencing, we sequenced the V4 region of bacterial 16S rRNA, and operational taxonomic units (OTUs) were defined by 97% sequence similarity. Principal coordinate analysis (PCoA) of weighted UniFrac distances was performed to evaluate the diversity of each intestinal microbiome sample. The microbiota differed significantly between the HD patients (characterized by the prevalence of Bacteroidetes) and HAEC patients (characterized by the prevalence of Proteobacteria), while the microbiota of the HAEC-R patients was more similar to that of the HAEC patients. We also observed that the specimens from different intestinal sites of each HD patient differed significantly, while the specimens from different intestinal sites of each HAEC and HAEC-R patient were more similar. In conclusion, the microbiome pattern of the HAEC-R patients was more similar to that of the HAEC patients than to that of the HD patients. The HD patients had a relatively distinct, more stable community than the HAEC and HAEC-R patients, suggesting that enterocolitis may either be caused by or result in a disruption of the patient's uniquely adapted intestinal flora. The intestinal microbiota associated with enterocolitis may persist following symptom resolution and can be implicated in the symptom recurrence.
Collapse
Affiliation(s)
- Yuqing Li
- Department of Clinical Nutrition, Shanghai Children’s Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Valeriy Poroyko
- Department of Medical Oncology &Therapeutics Research, City of Hope, Duarte, California, United States of America
| | - Zhilong Yan
- Department of Surgery, Shanghai Children’s Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Liya Pan
- Department of Clinical Nutrition, Shanghai Children’s Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yi Feng
- Department of Clinical Nutrition, Shanghai Children’s Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Peihua Zhao
- Institute of Molecular Ecology and Evolution, SKLEC & IECR, East China Normal University, Shanghai, China
| | - Zhoulonglong Xie
- Department of Surgery, Shanghai Children’s Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Li Hong
- Department of Clinical Nutrition, Shanghai Children’s Medical Center, Shanghai Jiaotong University School of Medicine, Shanghai, China
- * E-mail:
| |
Collapse
|
8
|
Yang K, Popova NV, Yang WC, Lozonschi I, Tadesse S, Kent S, Bancroft L, Matise I, Cormier RT, Scherer SJ, Edelmann W, Lipkin M, Augenlicht L, Velcich A. Interaction of Muc2 and Apc on Wnt signaling and in intestinal tumorigenesis: potential role of chronic inflammation. Cancer Res 2008; 68:7313-22. [PMID: 18794118 DOI: 10.1158/0008-5472.can-08-0598] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Somatic mutations of the adenomatous polyposis coli (APC) gene are initiating events in the majority of sporadic colon cancers. A common characteristic of such tumors is reduction in the number of goblet cells that produce the mucin MUC2, the principal component of intestinal mucus. Consistent with these observations, we showed that Muc2 deficiency results in the spontaneous development of tumors along the entire gastrointestinal tract, independently of deregulated Wnt signaling. To dissect the complex interaction between Muc2 and Apc in intestinal tumorigenesis and to elucidate the mechanisms of tumor formation in Muc2(-/-) mice, we crossed the Muc2(-/-) mouse with two mouse models, Apc(1638N/+) and Apc(Min/+), each of which carries an inactivated Apc allele. The introduction of mutant Muc2 into Apc(1638N/+) and Apc(Min/+) mice greatly increased transformation induced by the Apc mutation and significantly shifted tumor development toward the colon as a function of Muc2 gene dosage. Furthermore, we showed that in compound double mutant mice, deregulation of Wnt signaling was the dominant mechanism of tumor formation. The increased tumor burden in the distal colon of Muc2/Apc double mutant mice was similar to the phenotype observed in Apc(Min/+) mice that are challenged to mount an inflammatory response, and consistent with this, gene expression profiles of epithelial cells from flat mucosa of Muc2-deficient mice suggested that Muc2 deficiency was associated with low levels of subclinical chronic inflammation. We hypothesize that Muc2(-/-) tumors develop through an inflammation-related pathway that is distinct from and can complement mechanisms of tumorigenesis in Apc(+/-) mice.
Collapse
Affiliation(s)
- Kan Yang
- Strang Cancer Center at New York Blood Bank, New York, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Donlin LT, Danzl NM, Wanjalla C, Alexandropoulos K. Deficiency in expression of the signaling protein Sin/Efs leads to T-lymphocyte activation and mucosal inflammation. Mol Cell Biol 2006; 25:11035-46. [PMID: 16314525 PMCID: PMC1316950 DOI: 10.1128/mcb.25.24.11035-11046.2005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Our studies have concentrated on elucidating the role of the signaling protein Sin in T-lymphocyte function. We have previously shown that Sin overexpression inhibits T-lymphocyte development and activation. Here we show that Sin-deficient mice exhibit exaggerated immune responses characterized by enhanced cytokine secretion and T-cell-dependent antibody production. Excessive T-cell responses in young mice correlate with spontaneous development of inflammatory lesions in different organs of aged Sin(-/-) mice, particularly the small intestine. The intestinal inflammation is characterized by T- and B-cell infiltrates in the lamina propria, which correlate with crypt enlargement and marked villus expansion and/or damage. Similar to the human intestinal inflammatory disorder Crohn's disease (CD), and in contrast to most mouse models of mucosal inflammation, inflammatory lesions in the gastrointestinal tract of Sin(-/-) mice are restricted to the small bowel. Taken together, these results suggest that Sin regulates immune system and T-lymphocyte function and that immune system dysfunction in the absence of Sin may underlie the pathogenesis of tissue-specific inflammation and enteropathies such as CD.
Collapse
Affiliation(s)
- Laura T Donlin
- Department of Pharmacology, College of Physicians and Surgeons of Columbia University, New York, NY 10032, USA
| | | | | | | |
Collapse
|
10
|
Kim SC, Tonkonogy SL, Albright CA, Tsang J, Balish EJ, Braun J, Huycke MM, Sartor RB. Variable phenotypes of enterocolitis in interleukin 10-deficient mice monoassociated with two different commensal bacteria. Gastroenterology 2005; 128:891-906. [PMID: 15825073 DOI: 10.1053/j.gastro.2005.02.009] [Citation(s) in RCA: 323] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND & AIMS To explore the hypothesis that selective immune responses to distinct components of the intestinal microflora induce intestinal inflammation, we characterized disease kinetics and bacterial antigen-specific T-cell responses in ex germ-free interleukin 10 -/- and wild-type control mice monoassociated with Enterococcus faecalis , Escherichia coli , or Pseudomonas fluorescens . METHODS Colitis was measured by using blinded histological scores and spontaneous interleukin 12 secretion from colonic strip culture supernatants. Interferon gamma secretion was measured from mesenteric or caudal lymph node CD4 + T cells stimulated with bacterial lysate-pulsed antigen-presenting cells. Luminal bacterial concentrations were measured by culture and quantitative polymerase chain reaction. RESULTS Escherichia coli induced mild cecal inflammation after 3 weeks of monoassociation in interleukin 10 -/- mice. In contrast, Enterococcus faecalis-monoassociated interleukin 10 -/- mice developed distal colitis at 10-12 weeks that was progressively more severe and associated with duodenal inflammation and obstruction by 30 weeks. Neither bacterial strain induced inflammation in wild-type mice, and germ-free and Pseudomonas fluorescens-monoassociated interleukin 10 -/- mice remained disease free. CD4 + T cells from Enterococcus faecalis- or Escherichia coli-monoassociated interleukin 10 -/- mice selectively produced higher levels of interferon gamma and interleukin 4 when stimulated with antigen-presenting cells pulsed with the bacterial species that induced disease; these immune responses preceded the onset of histological inflammation in Enterococcus faecalis -monoassociated mice. Luminal bacterial concentrations did not explain regional differences in inflammation. CONCLUSIONS Different commensal bacterial species selectively initiate immune-mediated intestinal inflammation with distinctly different kinetics and anatomic distribution in the same host.
Collapse
Affiliation(s)
- Sandra C Kim
- Center for Gastrointestinal Biology and Disease, University of North Carolina, Chapel Hill, NC 27599-7032, USA
| | | | | | | | | | | | | | | |
Collapse
|
11
|
Abstract
Intestinal autoimmune diseases are thought to be associated with a breakdown in tolerance, leading to mucosal lymphocyte activation perhaps as a result of encounter with bacterium-derived Ag. To study mucosal CD8(+) T cell activation, tolerance, and polarization of autoimmune reactivity to self-Ag, we developed a novel (Fabpl(4x at -132)-OVA) transgenic mouse model expressing a truncated form of OVA in intestinal epithelia of the terminal ileum and colon. We found that OVA-specific CD8(+) T cells were partially tolerant to intestinal epithelium-derived OVA, because oral infection with Listeria monocytogenes-encoding OVA did not elicit an endogenous OVA-specific MHC class I tetramer(+)CD8(+) T cell response and IFN-gamma-, IL-4-, and IL-5-secreting T cells were decreased in the Peyer's patches, mesenteric lymph nodes, and intestinal mucosa of transgenic mice. Adoptive transfer of OVA-specific CD8(+) (OT-I) T cells resulted in their preferential expansion in the Peyer's patches and mesenteric lymph nodes and subsequently in the epithelia and lamina propria but failed to cause mucosal inflammation. Thus, CFSE-labeled OT-I cells greatly proliferated in these tissues by 5 days posttransfer. Strikingly, OT-I cell-transferred Fabpl(4x at -132)-OVA transgenic mice underwent a transient weight loss and developed a CD8(+) T cell-mediated acute enterocolitis 5 days after oral L. monocytogenes-encoding OVA infection. These findings indicate that intestinal epithelium-derived "self-Ag" gains access to the mucosal immune system, leading to Ag-specific T cell activation and clonal deletion. However, when Ag is presented in the context of bacterial infection, the associated inflammatory signals drive Ag-specific CD8(+) T cells to mediate intestinal immunopathology.
Collapse
Affiliation(s)
- Zhanju Liu
- Division of Immunology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | | |
Collapse
|
12
|
Kawamura T, Kanai T, Dohi T, Uraushihara K, Totsuka T, Iiyama R, Taneda C, Yamazaki M, Nakamura T, Higuchi T, Aiba Y, Tsubata T, Watanabe M. Ectopic CD40 ligand expression on B cells triggers intestinal inflammation. J Immunol 2004; 172:6388-97. [PMID: 15128830 DOI: 10.4049/jimmunol.172.10.6388] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Several studies indicate that CD4(+) T cells, macrophages, and dendritic cells initially mediate intestinal inflammation in murine models of human inflammatory bowel disease. However, the initial role of B cells in the development of intestinal inflammation remains unclear. In this study we present evidence that B cells can trigger intestinal inflammation using transgenic (Tg) mice expressing CD40 ligand (CD40L) ectopically on B cells (CD40L/B Tg). We demonstrated that CD40L/B Tg mice spontaneously developed severe transmural intestinal inflammation in both colon and ileum at 8-15 wk of age. In contrast, CD40L/B TgxCD40(-/-) double-mutant mice did not develop colitis, indicating the direct involvement of CD40-CD40L interaction in the development of intestinal inflammation. The inflammatory infiltrates consisted predominantly of massive aggregated, IgM-positive B cells. These mice were also characterized by the presence of anti-colon autoantibodies and elevated IFN-gamma production. Furthermore, although mice transferred with CD4(+) T cells alone or with both CD4(+) T and B220(+) B cells, but not B220(+) cells alone, from diseased CD40L/B Tg mice, develop colitis, mice transferred with B220(+) B cells from diseased CD40L/B Tg mice and CD4(+) T cells from wild-type mice also develop colitis, indicating that the Tg B cells should be a trigger for this colitis model, whereas T cells are involved as effectors. As it has been demonstrated that CD40L is ectopically expressed on B cells in some autoimmune diseases, the present study suggests the possible contribution of B cells in triggering intestinal inflammation in human inflammatory bowel disease.
Collapse
Affiliation(s)
- Takahiro Kawamura
- Department of Gastroenterology and Hepatology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Abstract
A deficiency in understanding the steps responsible for colitis is the lack of comprehension for the role chemokines play in mucosal inflammation. IFN-gamma-inducible protein-10 (IP-10) and CXCR3 are highly expressed at sites of colitis. Our findings show that IP-10 significantly contributes to the development of Th1 and inflammatory responses. Specifically, IP-10 inhibition in IL-10(-/-) mice attenuates the associated increases in serum and/or local amyloid A, IL-2, IL-6, TNF-alpha, IFN-gamma, IL-1alpha, and IL-1beta with colitis as compared with IL-10(-/-) mice that develop colitis similar to human Crohn's disease. Correspondingly, the rate or intensity of inflammation in IL-10(-/-) mice treated with anti-IP-10 Abs showed improved scoring of inflammation, compared with control IL-10(-/-) mice. This study provides important and novel information regarding IP-10 as a target for the treatment of colitis.
Collapse
MESH Headings
- Animals
- Apolipoproteins/biosynthesis
- Apolipoproteins/blood
- Chemokine CXCL10
- Chemokines, CXC/antagonists & inhibitors
- Chemokines, CXC/biosynthesis
- Chemokines, CXC/deficiency
- Chemokines, CXC/immunology
- Cytokines/biosynthesis
- Enterocolitis/genetics
- Enterocolitis/immunology
- Enterocolitis/pathology
- Enterocolitis/prevention & control
- Feces/chemistry
- Female
- Immune Sera/administration & dosage
- Immunization, Passive/methods
- Immunoglobulin A/analysis
- Immunoglobulin A/blood
- Immunoglobulin G/analysis
- Immunoglobulin G/biosynthesis
- Immunoglobulin G/blood
- Immunoglobulin G/classification
- Injections, Intraperitoneal
- Interferon-gamma/antagonists & inhibitors
- Interferon-gamma/pharmacology
- Interleukin-6/biosynthesis
- Interleukin-6/blood
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Rabbits
- Receptors, CXCR3
- Receptors, Chemokine/biosynthesis
- Serum Amyloid A Protein/biosynthesis
- Up-Regulation/genetics
- Up-Regulation/immunology
- Weight Loss/genetics
- Weight Loss/immunology
Collapse
Affiliation(s)
- Udai P Singh
- Department of Microbiology and Immunology, Morehouse School of Medicine, Atlanta, GA 30310, USA
| | | | | | | |
Collapse
|
14
|
Zhang S, Adams LG, Nunes J, Khare S, Tsolis RM, Bäumler AJ. Secreted effector proteins of Salmonella enterica serotype typhimurium elicit host-specific chemokine profiles in animal models of typhoid fever and enterocolitis. Infect Immun 2003; 71:4795-803. [PMID: 12874363 PMCID: PMC166006 DOI: 10.1128/iai.71.8.4795-4803.2003] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Infection of bovine ligated loops with the Salmonella enterica serotype Typhimurium wild type but not a sipA sopABDE2 mutant resulted in fluid accumulation, polymorphonuclear cell infiltration, and expression of CXC chemokines, particularly GRO alpha. None of these sipA sopABDE2-dependent responses was observed in murine-ligated loops. The majority of GRO alpha transcripts localized to bovine intestinal epithelium. Thus, different disease outcomes between mice (i.e., no diarrhea) and calves (i.e., diarrhea) may be due to differences in sipA sopABDE2-dependent CXC chemokine gene expression in epithelial cells.
Collapse
Affiliation(s)
- Shuping Zhang
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, Texas 77843-4467, USA
| | | | | | | | | | | |
Collapse
|
15
|
Isordia-Salas I, Pixley RA, Li F, Sainz I, Balfour Sartor R, Adam A, Colman RW. Chronic intestinal inflammation and angiogenesis in genetically susceptible rats is modulated by kininogen deficiency. Int Immunopharmacol 2002; 2:1895-905. [PMID: 12489803 DOI: 10.1016/s1567-5769(02)00183-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Genetically susceptible Lewis rats injected in the intestinal wall with peptidoglycan-polysaccharide (PG-APS) polymers develop chronic granulomatous enterocolitis associated with activation of the kallikrein-kinin system. To elucidate the role of high-molecular-weight kininogen (HK), we backcrossed Brown Norway rats having an HK deficiency with Lewis rats for five generations. Two new strains were produced, wild-type F5 (F5WT) and HK deficient (F5HKd), each with a approximately 97% Lewis genome. The HK values of F5WT rat plasma and F5HKd rat plasma were 0.62 +/- 0.20 and 0.08 +/- 0.03 U/ml, respectively. Among the inflammatory changes, the mean gross gut, total intestinal histologic and liver granuloma score and the white blood count were significantly lower in the F5HKd than the F5WT rats. Plasma T-kininogen was significantly less in F5HKd. Angiogenesis (mean vascular density) in the cecum was decreased significantly in F5HKd compared to F5WT. These results indicate the importance of the kallikrein-kinin system in this model of chronic enterocolitis and systemic inflammation.
Collapse
Affiliation(s)
- Irma Isordia-Salas
- The Sol Sherry Thrombosis Research Center, Temple University School of Medicine, 3400 North Broad Street, Philadelphia, PA 19140, USA
| | | | | | | | | | | | | |
Collapse
|
16
|
Simmons JG, Pucilowska JB, Keku TO, Lund PK. IGF-I and TGF-beta1 have distinct effects on phenotype and proliferation of intestinal fibroblasts. Am J Physiol Gastrointest Liver Physiol 2002; 283:G809-18. [PMID: 12181198 DOI: 10.1152/ajpgi.00057.2002] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Insulin-like growth factor I (IGF-I) and transforming growth factor-beta1 (TGF-beta1) are upregulated in myofibroblasts at sites of fibrosis in experimental enterocolitis and in Crohn's disease (CD). We compared the sites of expression of IGF-I and TGF-beta1 in a rat peptidoglycan-polysaccharide (PG-PS) model of chronic granulomatous enterocolitis and fibrosis. We used the human colonic CCD-18Co fibroblast/myofibroblast cell line to test the hypothesis that TGF-beta1 and IGF-I interact to regulate proliferation, collagen synthesis, and activated phenotype typified by expression of alpha-smooth muscle actin and organization into stress fibers. IGF-I potently stimulated while TGF-beta1 inhibited basal DNA synthesis. TGF-beta1 and IGF-I each had similar but not additive effects to induce type I collagen. TGF-beta1 but not IGF-I potently stimulated expression of alpha-smooth muscle actin and stress fiber formation. IGF-I in combination with TGF-beta1 attenuated stress fiber formation without reducing alpha-smooth muscle actin expression. Stress fibers were not a prerequisite for increased collagen synthesis. TGF-beta1 upregulated IGF-I mRNA, which led us to examine the effects of IGF-I in cells previously activated by TGF-beta1 pretreatment. IGF-I potently stimulated proliferation of TGF-beta1-activated myofibroblasts without reversing activated fibrogenic phenotype. We conclude that TGF-beta1 and IGF-I both stimulate type I collagen synthesis but have differential effects on activated phenotype and proliferation. We propose that during intestinal inflammation, regulation of activated phenotype and proliferation may require sequential actions of TGF-beta1 and IGF-I, but they may act in concert to increase collagen deposition.
Collapse
Affiliation(s)
- James G Simmons
- Department of Cell and Molecular Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7545, USA.
| | | | | | | |
Collapse
|
17
|
Isordia-Salas I, Pixley RA, Li F, Sainz I, Sartor RB, Adam A, Colman RW. Kininogen deficiency modulates chronic intestinal inflammation in genetically susceptible rats. Am J Physiol Gastrointest Liver Physiol 2002; 283:G180-6. [PMID: 12065305 DOI: 10.1152/ajpgi.00514.2001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Genetically susceptible Lewis rats injected in the intestinal wall with peptidoglycan-polysaccharide (PG-APS) polymers develop chronic granulomatous enterocolitis concomitant with activation of the kallikrein-kinin system. To elucidate the role of high-molecular-weight kininogen (HK) in chronic enterocolitis, we back crossed Brown-Norway rats having a HK deficiency with Lewis rats for five generations. Two new strains were produced, wild-type F5 (F5WT) and HK deficient (F5HKd), each with a approximately 97% Lewis genome. The HK values of F5WT and F5HKd rat plasma were 0.62 +/- 0.20 and 0.08 +/- 0.03 U/ml, respectively. In PG-APS-injected rats, chronic inflammation was measured by using gross gut score, histological inflammation, liver granuloma, and white blood cell count. The mean gross gut scores were significantly lower in the F5HKd than in the F5WT rats. Plasma T-kininogen was significantly less in F5HKd. These results indicate the importance of the kallikrein-kinin system in this model of chronic enterocolitis and systemic inflammation.
Collapse
Affiliation(s)
- Irma Isordia-Salas
- The Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania 19140, USA
| | | | | | | | | | | | | |
Collapse
|
18
|
Abstract
OBJECTIVE A link has been postulated between measles-mumps-rubella (MMR) vaccine and a form of autism that is a combination of developmental regression and gastrointestinal symptoms that occur shortly after immunization. This hypothesis has involved 3 separate claims: 1) that there is new phenotype of autism involving regression and gastrointestinal symptoms, 2) that this new variant is responsible for the alleged rise of autism rates, and 3) that this phenotype is associated with biological findings suggestive of the persistence of measles infection. We tested the first of these claims. If this new "autistic enterocolitis" syndrome had some validity, then 1 or several of the following 6 predictions should be supported by empirical data: 1) childhood disintegrative disorder has become more frequent, 2) the mean age of first parental concern for autistic children who are exposed to MMR is closer to the mean immunization age than in children who are not exposed to MMR, 3) regression in the development of children with autism has become more common in MMR-vaccinated children, 4) the age of onset for autistic children with regression clusters around the MMR immunization date and is different from that of autistic children without regression, 5) children with regressive autism have distinct symptom and severity profiles, and 6) regressive autism is associated with gastrointestinal symptoms and/or inflammatory bowel disorder. METHODS Three samples were used. Epidemiologic data on 96 children (95 immunized with MMR at a median age of 13.5 months) who were born between 1992 and 1995 and had a pervasive developmental disorder diagnosis as reported in a recent UK survey (post-MMR sample) were compared with data from 2 previous clinical samples (1 pre-MMR [n = 98] and 1 post-MMR [n = 68]) of autistic patients. All patients were assessed with the standardized Autism Diagnostic Interview (ADI), allowing rigorous comparison of age at first parental concerns and rates of regression across samples. Reliability was excellent on ADI scores, age of parental concern, and developmental regression. Furthermore, data on bowel symptoms and disorders were available in the epidemiologic survey from both pediatric and parental sources, and immunization dates were obtained from computerized records. RESULTS The prevalence of childhood disintegrative disorder was 0.6/10 000 (95% confidence interval: 0.02-3.6/10 000); this very low rate is consistent with previous estimates and is not suggestive of an increased frequency of this form of pervasive developmental disorder in samples of children who are immunized with MMR. There was no difference in the mean age at first parental concern between the 2 samples exposed to MMR (19.3 and 19.2 months) and the pre-MMR sample (19.5 months). Thus, MMR immunization was not associated with a shift toward an earlier age for first parental concerns. Similarly, the rate of developmental regression reported in the post-MMR sample (15.6%) was not different from that in the pre-MMR sample (18.4%); therefore, there was no suggestion that regression in the developmental course of autism had increased in frequency since MMR was introduced. In the epidemiologic sample, the subset of autistic children with regression had no other developmental or clinical characteristics, which would have argued for a specific, etiologically distinct phenotype. Parents of autistic children with developmental regression detected the first symptoms at a very similar age (19.8 months) to those of autistic children without regression (19.3 months). Moreover, the mean intervals from MMR immunization to parental recognition of autistic symptoms were comparable in autistic children with or without regression (248 vs 272 days; not significant). In the epidemiologic sample, gastrointestinal symptoms were reported in 18.8% of children. Constipation was the most common symptom (9.4%), and no inflammatory bowel disorder was reported. Furthermore, there was no association between developmental regression and gastrointestinal symptoms (odds ratio: 0.63; 95% confidence interval: 0.06-3.2; not significant), and only 2.1% of the sample experienced both problems, a rate that did not exceed chance expectations. CONCLUSIONS No evidence was found to support a distinct syndrome of MMR-induced autism or of "autistic enterocolitis." These results add to the recent accumulation of large-scale epidemiologic studies that all failed to support an association between MMR and autism at population level. When combined, the current findings do not argue for changes in current immunization programs and recommendations.
Collapse
Affiliation(s)
- E Fombonne
- Institute of Psychiatry, Department of Child and Adolescent Psychiatry, King's College London, London, United Kingdom
| | | |
Collapse
|
19
|
Lindsay JO, Ciesielski CJ, Scheinin T, Hodgson HJ, Brennan FM. The prevention and treatment of murine colitis using gene therapy with adenoviral vectors encoding IL-10. J Immunol 2001; 166:7625-33. [PMID: 11390520 DOI: 10.4049/jimmunol.166.12.7625] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
IL-10-deficient (IL-10(-/-)) mice develop colitis with many similarities to Crohn's disease. Daily IL-10 injections have a short systemic half-life and are unable to induce complete remission in IL-10(-/-) mice with established disease. In this paper, we investigate the duration, potency, and immunogenicity of gene therapy using an adenoviral vector encoding murine IL-10 (AdvmuIL-10). A single systemic injection of AdvmuIL-10 was sufficient not only to prevent the onset of colitis for at least 10 wk but also to induce clinical and histological remission in mice with established disease. In addition, AdvmuIL-10 diminished the systemic manifestations of disease, including elevated acute-phase proteins, as well as the local consequences of inflammation such as raised stool IL-1beta concentrations. Both IL-10 protein and the effects of secreted IL-10 were detectable for 10 wk after AdvmuIL-10 injection. Furthermore, the immunoregulatory effect of a single AdvmuIL-10 injection was manifest both by a reduction in TNF-alpha, IFN-gamma, and RANTES release from stimulated splenocyte cultures, and also by a change in the proportion of CD45RB(high/low) lymphocytes in the spleen compared with control mice. The delivery of AdvmuIL-10 resulted in a significantly diminished host antiadenoviral response compared with control adenoviral vectors. Thus, gene therapy strategies using adenoviral vectors encoding immunoregulatory and antiinflammatory cytokines may prove to be a potent approach for the treatment of chronic inflammatory disease. Antiinflammatory cytokine expression protects against immune responses directed at gene vectors.
Collapse
Affiliation(s)
- J O Lindsay
- Kennedy Institute of Rheumatology Division, Imperial College School of Medicine, London, United Kingdom.
| | | | | | | | | |
Collapse
|
20
|
Abstract
Intramural injection of peptidoglycan-polysaccharide (PG-PS) induces acute enterocolitis that spontaneously relapses in Lewis but not Fischer rats. Interleukin-1 (IL-1) and tumor necrosis factor-alpha (TNF-alpha) induce prostaglandin E2 (PGE2) secretion, which inhibits secretion of these cytokines by macrophages, suggesting an inhibitory feedback mechanism. We postulate that Lewis rat susceptibility to relapse is due to an imbalance between protective prostaglandins and cytokines. Female Fischer and Lewis rats were injected with PG-PS (37.5 microg/g) or human serum albumin intramurally. Tissue IL-1alpha and PGE2 immunoreactivities and myeloperoxidase (MPO) activity were determined. Relapsing rats had lower PGE2 and PGE2/IL-1alpha ratios than nonrelapsing rats (P < 0.05). In Fischer rats, 2 mg/kg/day of indomethacin potentiated cecal MPO and IL-1alpha concentrations above PG-PS alone (P < 0.05). Misoprostol treatment blocked PG-PS induced IL-1alpha and MPO and inhibited the potentiating effect of indomethacin on MPO and IL-1alpha (P < 0.05). In conclusion, increased endogenous PG may be protective against relapsing inflammation in PG-PS induced enterocolitis, at least partially via inhibition of proinflammatory cytokines. Imbalance between protective prostaglandins and proinflammatory cytokines may be involved in the pathogenesis of chronic relapsing inflammation in genetically susceptible hosts.
Collapse
Affiliation(s)
- H M Kandil
- Center for Gastrointestinal Biology and Disease, Department of Medicine, The University of North Carolina at Chapel Hill, USA
| | | | | |
Collapse
|
21
|
Poussier P, Ning T, Chen J, Banerjee D, Julius M. Intestinal inflammation observed in IL-2R/IL-2 mutant mice is associated with impaired intestinal T lymphopoiesis. Gastroenterology 2000; 118:880-91. [PMID: 10784587 DOI: 10.1016/s0016-5085(00)70174-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Although interleukin (IL)-2(-/-) and IL-2Ralpha(-/-) mice develop inflammatory bowel disease, IL-2Rbeta(-/-) animals are apparently free of gut pathology. Intraintestinal T lymphopoiesis is reported to be impaired in IL-2Rbeta(-/-) mice; we have determined whether this characteristic correlated with the apparent resistance of this mutant strain to intestinal inflammation. This led us to reassess intraintestinal T lymphopoiesis in these 3 mutant strains. METHODS Intestinal histology and intraintestinal T lymphopoiesis were analyzed in unmanipulated mutant mice and in athymic and euthymic radiation chimeras reconstituted with bone marrow derived from IL-2(-/-), IL-2Ralpha(-/-), and IL-2Rbeta(-/-) donors. RESULTS Intraintestinal T lymphopoiesis was ablated in the 3 mutant strains and was associated with cryptopatch abnormalities. The intestinal mucosa of mice reconstituted with lymphocytes from IL-2Rbeta(-/-) mice exhibited lesions of both the small and large bowel similar to those observed in the early stages of human gluten enteropathy and acute ulcerative colitis, respectively. Analysis of euthymic and athymic bone marrow radiation chimeras indicated that T cells located in the intestinal mucosa of unmanipulated IL-2(-/-), IL-2Ralpha(-/-), and IL-2Rbeta(-/-) mice are of thymic origin. CONCLUSIONS Null mutations at IL-2/IL-2Ralpha and beta loci differentially affect intraintestinal and intrathymic T lymphopoiesis. These conditions are associated with lesions of intestinal inflammation that are mediated by thymus-derived T cells.
Collapse
Affiliation(s)
- P Poussier
- Arthritis and Immune Disorder Research Centre, Toronto, University of Toronto, Toronto, Ontario, Canada
| | | | | | | | | |
Collapse
|
22
|
Takeda K, Clausen BE, Kaisho T, Tsujimura T, Terada N, Förster I, Akira S. Enhanced Th1 activity and development of chronic enterocolitis in mice devoid of Stat3 in macrophages and neutrophils. Immunity 1999; 10:39-49. [PMID: 10023769 DOI: 10.1016/s1074-7613(00)80005-9] [Citation(s) in RCA: 922] [Impact Index Per Article: 36.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We have generated mice with a cell type-specific disruption of the Stat3 gene in macrophages and neutrophils. The mutant mice are highly susceptible to endotoxin shock with increased production of inflammatory cytokines such as TNF alpha, IL-1, IFN gamma, and IL-6. Endotoxin-induced production of inflammatory cytokines is augmented because the suppressive effects of IL-10 on inflammatory cytokine production from macrophages and neutrophils are completely abolished. The mice show a polarized immune response toward the Th1 type and develop chronic enterocolitis with age. Taken together, Stat3 plays a critical role in deactivation of macrophages and neutrophils mainly exerted by IL-10.
Collapse
Affiliation(s)
- K Takeda
- Department of Biochemistry, Hyogo College of Medicine, Nishinomiya, Japan
| | | | | | | | | | | | | |
Collapse
|
23
|
Sartor RB, DeLa Cadena RA, Green KD, Stadnicki A, Davis SW, Schwab JH, Adam AA, Raymond P, Colman RW. Selective kallikrein-kinin system activation in inbred rats differentially susceptible to granulomatous enterocolitis. Gastroenterology 1996; 110:1467-81. [PMID: 8613052 DOI: 10.1053/gast.1996.v110.pm8613052] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND & AIMS Crohn's disease is characterized by unrestrained inflammation with a genetic component. Genetic susceptibility and activation of the kalli-krein-kinin (contact) system were investigated in experimental enterocolitis and extraintestinal inflammation induced by bacterial polymers. METHODS Kinetics of inflammation in inbred Lewis and Buffalo rats injected subserosally with peptidoglycan-polysaccharide polymers were correlated with in vivo and in vitro activation of the contact system. RESULTS Lewis rats had a biphasic course of enterocolitis. Acute inflammation peaked 1 day after injection, gradually decreasing until day 14 when intestinal inflammation spontaneously reactivated and persisted for 16 weeks, accompanied by arthritis, granulomatous hepatitis, anemia, and leukocytosis. Self-limited acute enterocolitis in Buffalo rats resolved by 24 days without extraintestinal involvement. Consumption of the precursor proteins prekalli-krein and high-molecular-weight kininogen indicated activation of the plasma contact system in Lewis rats and closely correlated with chronic intestinal inflammation. Contact system activation did not occur in Buffalo rats, even during acute inflammation. In vitro studies showed a decreased rate of kininogen cleavage in Buffalo plasma. CONCLUSIONS Selective in vivo and in vitro activation of the contact system in susceptible Lewis rats suggests that this pathway is one determinant of genetic susceptibility to granulomatous enterocolitis and systemic complications.
Collapse
Affiliation(s)
- R B Sartor
- Department of Medicine, University of North Carolina, Chapel Hill, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Evron E, Brautbar C, Becker S, Fenakel G, Abend Y, Sthoeger Z, Cohen P, Geltner D. Correlation between gold-induced enterocolitis and the presence of the HLA-DRB1*0404 allele. Arthritis Rheum 1995; 38:755-9. [PMID: 7779117 DOI: 10.1002/art.1780380607] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE In recent years we have treated 4 rheumatoid arthritis (RA) patients who developed gold-induced enterocolitis, a well-recognized, although rare, complication of chrysotherapy. The aim of the present study was to seek any genetic predisposition for this complication. METHODS HLA DNA typing was done on fresh white blood cells from the 4 patients. RESULTS Three of the 4 patients (75%) exhibited the DRB1*0404 allele, whereas the prevalence of this allele among the Ashkenazi Jewish population of RA patients without colitis was 9.2% and 10.2% in 2 different studies. CONCLUSION The results indicate that the DRB1*0404 may be associated with risk for the development of gold-induced enterocolitis in this population and suggest that HLA DNA typing should be considered in Jews who may be undergoing chrysotherapy.
Collapse
Affiliation(s)
- E Evron
- Kaplan Hospital, Rehovot, Israel
| | | | | | | | | | | | | | | |
Collapse
|
25
|
McCall RD, Haskill S, Zimmermann EM, Lund PK, Thompson RC, Sartor RB. Tissue interleukin 1 and interleukin-1 receptor antagonist expression in enterocolitis in resistant and susceptible rats. Gastroenterology 1994; 106:960-72. [PMID: 8144001 DOI: 10.1016/0016-5085(94)90755-2] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND/AIMS Subserosal injection of purified group A streptococcal peptidoglycan-polysaccharide (PG-APS) induces chronic relapsing granulomatous enterocolitis and systemic inflammation in susceptible inbred Lewis rats but only transient intestinal injury in Buffalo and Fischer rats. Cecal interleukin 1 (IL-1) and IL-1 receptor antagonist (IL-1ra) expression was measured in inbred rats displaying differential susceptibility to experimental enterocolitis. METHODS The ileum and cecum of Lewis, Buffalo, and Fischer rats were subserosally injected with purified PG-APS or albumin. IL-1 and IL-1ra messenger RNA (mRNA) and protein (IL-1 only) were measured 1 or 27 days later. PG-APS-injected Lewis rats were treated with recombinant human IL-1ra. Kinetics of IL-1 and IL-1ra mRNA expression were studied in peritoneal cells. RESULTS All rats strains developed acute inflammation with increased cecal concentrations of IL-1 beta and IL-1ra mRNA. Lewis rats developed chronic enterocolitis and had higher IL-1 and IL-1ra mRNA tissue levels than Buffalo or Fischer rats, which displayed no chronic inflammation. IL-1 beta and IL-1ra were produced by submucosal granulomas and correlated with inflammation. IL-1 alpha protein levels paralleled IL-1 beta mRNA expression. IL-1ra treatment attenuated acute and chronic enterocolitis, adhesions, and arthritis. PG-APS induced IL-1 and IL-1ra expression in peritoneal cells from Lewis and Fischer rats. CONCLUSIONS Bacterial cell wall polymers stimulate IL-1 and IL-1ra expression in vivo and in vitro. These counterbalancing cytokines are increased in experimental enterocolitis and have important immunoregulatory roles in intestinal inflammation.
Collapse
Affiliation(s)
- R D McCall
- Department of Internal Medicine, University of North Carolina at Chapel Hill
| | | | | | | | | | | |
Collapse
|
26
|
Abstract
Interleukin-10 (IL-10) affects the growth and differentiation of many hemopoietic cells in vitro; in particular, it is a potent suppressor of macrophage and T cell functions. In IL-10-deficient mice, generated by gene targeting, lymphocyte development and antibody responses are normal, but most animals are growth retarded and anemic and suffer from chronic enterocolitis. Alterations in intestine include extensive mucosal hyperplasia, inflammatory reactions, and aberrant expression of major histocompatibility complex class II molecules on epithelia. In contrast, mutants kept under specific pathogen-free conditions develop only a local inflammation limited to the proximal colon. These results indicate that the bowel inflammation in the mutants originates from uncontrolled immune responses stimulated by enteric antigens and that IL-10 is an essential immunoregulator in the intestinal tract.
Collapse
Affiliation(s)
- R Kühn
- Institute for Genetics, University of Cologne, Federal Republic of Germany
| | | | | | | | | |
Collapse
|