1
|
Arthur S, Palaniappan B, Afroz S, Sundaram U. Unique Regulation of Coupled NaCl Absorption by Inducible Nitric Oxide in a Spontaneous SAMP1/YitFc Mouse Model of Chronic Intestinal Inflammation. Inflamm Bowel Dis 2021; 27:1804-1812. [PMID: 34019094 PMCID: PMC8528149 DOI: 10.1093/ibd/izab093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Indexed: 12/09/2022]
Abstract
In the small intestine, Na:H (NHE3) and Cl:HCO3 (DRA or PAT1) exchangers present in the brush border membrane (BBM) of absorptive villus cells are primarily responsible for the coupled absorption of NaCl, the malabsorption of which causes diarrhea, a common symptom of inflammatory bowel disease (IBD). Inducible nitric oxide (iNO), a known mediator of inflammation, is increased in the mucosa of the chronically inflamed IBD intestine. An SAMP1/YitFc (SAMP1) mouse, a spontaneous model of chronic ileitis very similar to human IBD, was used to study alterations in NaCl absorption. The SAMP1 and control AKR mice were treated with I-N(6)-(1-Iminoethyl)-lysine (L-NIL) to inhibit iNO production, and DRA/PAT1 and NHE3 activities and protein expression were studied. Though Na:H exchange activity was unaffected, Cl:HCO3 activity was significantly decreased in SAMP1 mice due to a reduction in its affinity for Cl, which was reversed by L-NIL treatment. Though DRA and PAT1 expressions were unchanged in all experimental conditions, phosphorylation studies indicated that DRA, not PAT1, is affected in SAMP1. Moreover, the altered phosphorylation levels of DRA was restored by L-NIL treatment. Inducible NO mediates the inhibition of coupled NaCl absorption by decreasing Cl:HCO3 but not Na:H exchange. Specifically, Cl:HCO3 exchanger DRA but not PAT1 is regulated at the level of its phosphorylation by iNO in the chronically inflamed intestine.
Collapse
Affiliation(s)
- Subha Arthur
- Department of Clinical and Translational Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia, USA, United States
| | - Balasubramanian Palaniappan
- Department of Clinical and Translational Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia, USA, United States
| | - Sheuli Afroz
- Department of Clinical and Translational Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia, USA, United States
| | - Uma Sundaram
- Department of Clinical and Translational Sciences, Joan C. Edwards School of Medicine, Marshall University, Huntington, West Virginia, USA, United States,Address correspondence to: Uma Sundaram, MD, Joan C. Edwards School of Medicine, Marshall University, 1600 Medical Center Drive, Huntington, WV 25701, United States. E-mail:
| |
Collapse
|
2
|
Palaniappan B, Sundaram S, Arthur S, Afroz S, Sundaram U. Inducible Nitric Oxide Regulates Na-Glucose Co-transport in a Spontaneous SAMP1/YitFc Mouse Model of Chronic Ileitis. Nutrients 2020; 12:E3116. [PMID: 33065982 DOI: 10.3390/nu12103116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 09/29/2020] [Accepted: 10/02/2020] [Indexed: 12/30/2022] Open
Abstract
In mammalian small intestine, glucose is primarily absorbed via Na-dependent glucose co-transporter (SGLT1) on the brush border membrane (BBM) of absorptive villus cells. Malabsorption of nutrients (e.g., glucose) leads to malnutrition, a common symptom of inflammatory bowel disease (IBD), where the mucosa is characterized by chronic inflammation. Inducible nitric oxide (iNO) is known to be elevated in IBD mucosa. SAMP1/YitFc (SAMP1) mouse is a spontaneous model of chronic ileitis that develops lesions in its terminal ileum, very similar to human IBD. How SGLT1 may be affected in SAMP1 model of chronic ileitis is unknown. Ten-week-old SAMP1 mice with AKR mice as control were treated with N6-(1-iminoethyl)-L-lysine dihydrochloride (L-NIL) to inhibit iNO production. Intracellular NO levels were found to be increased in villus cells from SAMP1 mice. Moreover, SGLT1 and Na+/K+-ATPase activities and BBM SGLT1 expression were significantly decreased. However, L-NIL treatment reduced the intracellular iNO production, and reversed both downregulated SGLT1 and Na+/K+-ATPase activities in SAMP1 mice. Inhibition of iNO by L-NIL treatment also significantly reversed the BBM SGLT1 protein expression in SAMP1 mice. L-NIL reversed the inflammation mediated downregulation of SGLT1 activity by restoring the BBM SGLT1 expression. Thus, regulation of SGLT1 in chronic ileitis is likely mediated by iNO.
Collapse
|
3
|
Buttó LF, Pelletier A, More SK, Zhao N, Osme A, Hager CL, Ghannoum MA, Sekaly RP, Cominelli F, Dave M. Intestinal Stem Cell Niche Defects Result in Impaired 3D Organoid Formation in Mouse Models of Crohn's Disease-like Ileitis. Stem Cell Reports 2020; 15:389-407. [PMID: 32679063 PMCID: PMC7419719 DOI: 10.1016/j.stemcr.2020.06.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 06/16/2020] [Accepted: 06/18/2020] [Indexed: 02/08/2023] Open
Abstract
Intestinal epithelial barrier dysfunction is a risk factor in the pathogenesis of Crohn’s disease (CD); however, no corrective FDA-approved therapies exist. We used an enteroid (EnO)-based system in two murine models of experimental CD, SAMP1/YitFc (SAMP) and TNFΔARE/+ (TNF). While severely inflamed SAMP mice do not generate EnOs, “inflammation-free” SAMP mice form EnO structures with impaired morphology and reduced intestinal stem cell (ISC) and Paneth cell viability. We validated these findings in TNF mice concluding that inflammation in intestinal tissues impedes EnO generation and suppressing inflammation by steroid administration partially rescues impaired formation in SAMP mice. We generated the first high-resolution transcriptional profile of the SAMP ISC niche demonstrating that alterations in multiple key pathways contribute to niche defect and targeting them may partially rescue the phenotype. Furthermore, we correlated the defects in formation and the rescue of EnO formation to reduced viability of ISCs and Paneth cells. Enteroid (EnO) formation is impaired in inflammation-free SAMP mice SAMP EnOs maintain impaired functions ex vivo recapitulating epithelial CD defect Inflammation impedes EnO formation, which is partially restored by steroid treatment Reduced number of viable intestinal stem and Paneth cells correlate with EnO defect
Collapse
Affiliation(s)
- Ludovica F Buttó
- Department of Medicine, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, 11100 Euclid Avenue, Cleveland, OH 44106-5066, USA; Department of Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Adam Pelletier
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Shyam K More
- Division of Gastroenterology & Hepatology University of California Davis, School of Medicine, Institute for Regenerative Cures, 2921 Stockton Boulevard, Suite 1615, Sacramento, CA 95817, USA
| | - Nan Zhao
- Department of Medicine, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, 11100 Euclid Avenue, Cleveland, OH 44106-5066, USA
| | - Abdullah Osme
- Department of Medicine, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, 11100 Euclid Avenue, Cleveland, OH 44106-5066, USA; Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Christopher L Hager
- Center for Medical Mycology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Mahmoud A Ghannoum
- Center for Medical Mycology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Rafick-Pierre Sekaly
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Fabio Cominelli
- Department of Medicine, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, 11100 Euclid Avenue, Cleveland, OH 44106-5066, USA; Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA; Department of Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.
| | - Maneesh Dave
- Department of Medicine, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, 11100 Euclid Avenue, Cleveland, OH 44106-5066, USA; Department of Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA; Division of Gastroenterology & Hepatology University of California Davis, School of Medicine, Institute for Regenerative Cures, 2921 Stockton Boulevard, Suite 1615, Sacramento, CA 95817, USA.
| |
Collapse
|
4
|
Menghini P, Corridoni D, Buttó LF, Osme A, Shivaswamy S, Lam M, Bamias G, Pizarro TT, Rodriguez-Palacios A, Dinarello CA, Cominelli F. Neutralization of IL-1α ameliorates Crohn's disease-like ileitis by functional alterations of the gut microbiome. Proc Natl Acad Sci U S A 2019; 116:26717-26726. [PMID: 31843928 PMCID: PMC6936591 DOI: 10.1073/pnas.1915043116] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Crohn's disease and ulcerative colitis are chronic and progressive inflammatory bowel diseases (IBDs) that are attributed to dysregulated interactions between the gut microbiome and the intestinal mucosa-associated immune system. There are limited studies investigating the role of either IL-1α or IL-1β in mouse models of colitis, and no clinical trials blocking either IL-1 have yet to be performed. In the present study, we show that neutralization of IL-1α by a specific monoclonal antibody against murine IL-1α was highly effective in reducing inflammation and damage in SAMP mice, mice that spontaneously develop a Crohn's-like ileitis. Anti-mouse IL-1α significantly ameliorated the established, chronic ileitis and also protected mice from developing acute DSS-induced colitis. Both were associated with taxonomic divergence of the fecal gut microbiome, which was treatment-specific and not dependent on inflammation. Anti-IL-1α administration led to a decreased ratio of Proteobacteria to Bacteroidetes, decreased presence of Helicobacter species, and elevated representation of Mucispirillum schaedleri and Lactobacillus salivarius. Such modification in flora was functionally linked to the antiinflammatory effects of IL-1α neutralization, as blockade of IL-1α was not effective in germfree SAMP mice. Furthermore, preemptive dexamethasone treatment of DSS-challenged SAMP mice led to changes in flora composition without preventing the development of colitis. Thus, neutralization of IL-1α changes specific bacterial species of the intestinal microbiome, which is linked to its antiinflammatory effects. These functional findings may be of significant value for patients with IBD, who may benefit from targeted IL-1α-based therapies.
Collapse
Affiliation(s)
- Paola Menghini
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Daniele Corridoni
- Medical Research Council (MRC) Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine (WIMM), John Radcliffe Hospital, University of Oxford, Oxford OX3 9DS, United Kingdom
| | - Ludovica F Buttó
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Abdullah Osme
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | | | - Minh Lam
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Giorgos Bamias
- Gastrointestinal Unit, 3rd Academic Department of Internal Medicine, National and Kapodistrian University of Athens, Sotiria Hospital, 11527 Athens, Greece
| | - Theresa T Pizarro
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | - Alexander Rodriguez-Palacios
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| | | | - Fabio Cominelli
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106
| |
Collapse
|
5
|
Li Z, Buttó LF, Buela KA, Jia LG, Lam M, Ward JD, Pizarro TT, Cominelli F. Death Receptor 3 Signaling Controls the Balance between Regulatory and Effector Lymphocytes in SAMP1/YitFc Mice with Crohn's Disease-Like Ileitis. Front Immunol 2018; 9:362. [PMID: 29545797 PMCID: PMC5837992 DOI: 10.3389/fimmu.2018.00362] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 02/08/2018] [Indexed: 12/17/2022] Open
Abstract
Death receptor 3 (DR3), a member of the tumor necrosis factor receptor (TNFR) superfamily, has been implicated in regulating T-helper type-1 (TH1), type-2 (TH2), and type-17 (TH17) responses as well as regulatory T cell (Treg) and innate lymphoid cell (ILC) functions during immune-mediated diseases. However, the role of DR3 in controlling lymphocyte functions in inflammatory bowel disease (IBD) is not fully understood. Recent studies have shown that activation of DR3 signaling modulates Treg expansion suggesting that stimulation of DR3 represents a potential therapeutic target in human inflammatory diseases, including Crohn's disease (CD). In this study, we tested a specific DR3 agonistic antibody (4C12) in SAMP1/YitFc (SAMP) mice with CD-like ileitis. Interestingly, treatment with 4C12 prior to disease manifestation markedly worsened the severity of ileitis in SAMP mice despite an increase in FoxP3+ lymphocytes in mesenteric lymph node (MLN) and small-intestinal lamina propria (LP) cells. Disease exacerbation was dominated by overproduction of both TH1 and TH2 cytokines and associated with expansion of dysfunctional CD25-FoxP3+ and ILC group 1 (ILC1) cells. These effects were accompanied by a reduction in CD25+FoxP3+ and ILC group 3 (ILC3) cells. By comparison, genetic deletion of DR3 effectively reversed the inflammatory phenotype in SAMP mice by promoting the expansion of CD25+FoxP3+ over CD25-FoxP3+ cells and the production of IL-10 protein. Collectively, our data demonstrate that DR3 signaling modulates a multicellular network, encompassing Tregs, T effectors, and ILCs, governing disease development and progression in SAMP mice with CD-like ileitis. Manipulating DR3 signaling toward the restoration of the balance between protective and inflammatory lymphocytes may represent a novel and targeted therapeutic modality for patients with CD.
Collapse
Affiliation(s)
- Zhaodong Li
- BRB-5, Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, United States
| | - Ludovica F Buttó
- BRB-5, Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, United States
| | - Kristine-Anne Buela
- Department of Pathology, Case Western Reserve University, Cleveland, OH, United States
| | - Li-Guo Jia
- BRB-5, Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, United States
| | - Minh Lam
- BRB-5, Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, United States
| | - John D Ward
- BRB-5, Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, United States
| | - Theresa T Pizarro
- Department of Pathology, Case Western Reserve University, Cleveland, OH, United States
| | - Fabio Cominelli
- BRB-5, Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, United States
| |
Collapse
|
6
|
Cominelli F, Arseneau KO, Rodriguez-Palacios A, Pizarro TT. Uncovering Pathogenic Mechanisms of Inflammatory Bowel Disease Using Mouse Models of Crohn's Disease-Like Ileitis: What is the Right Model? Cell Mol Gastroenterol Hepatol 2017; 4:19-32. [PMID: 28560286 PMCID: PMC5439236 DOI: 10.1016/j.jcmgh.2017.02.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 02/15/2017] [Indexed: 02/06/2023]
Abstract
Crohn's disease and ulcerative colitis, together known as inflammatory bowel disease, are debilitating chronic disorders of unknown cause and cure. Our evolving understanding of these pathologies is enhanced greatly by the use of animal models of intestinal inflammation that allow in vivo mechanistic studies, preclinical evaluation of new therapies, and investigation into the causative factors that underlie disease pathogenesis. Several animal models, most commonly generated in mice, exist for the study of colitis. The appropriateness of their use often can be determined by their mode of generation (ie, chemical induction, T-cell transfer, targeted genetic manipulation, spontaneously occurring, and so forth), the type of investigation (mechanistic studies, pathogenic experiments, preclinical evaluations, and so forth), and the type of inflammation that occurs in the model (acute vs chronic colitis, tissue injury/repair, and so forth). Although most murine models of inflammatory bowel disease develop inflammation in the colon, Crohn's disease most commonly occurs in the terminal ileum, where a very limited number of mouse models manifest disease. This review discusses appropriate experimental applications for different mouse models of colitis, and highlights the particular utility of 2 highly relevant models of Crohn's-like ileitis-the spontaneous SAMP1/YitFc inbred mouse strain and the genetically engineered TnfΔAU-rich element/+ mouse model of tumor necrosis factor overexpression, both of which bear strong resemblance to the human condition. Similar to patients with Crohn's disease, SAMP1/YitFc ileitis develops spontaneously, without chemical, genetic, or immunologic manipulation, making this model particularly relevant for studies aimed at identifying the primary defect underlying the occurrence of Crohn's ileitis, as well as preclinical testing of novel treatment modalities.
Collapse
Affiliation(s)
- Fabio Cominelli
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio,Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio,Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio,Correspondence Address correspondence to: Fabio Cominelli, MD, PhD, Division of Gastroenterology, Case Western Reserve University School of Medicine, 11100 Euclid Avenue, Cleveland, Ohio 44106-5066. fax: (216) 844-7371.Division of GastroenterologyCase Western Reserve University School of Medicine11100 Euclid AvenueClevelandOhio 44106-5066
| | - Kristen O. Arseneau
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio,Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Alexander Rodriguez-Palacios
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio,Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Theresa T. Pizarro
- Department of Medicine, Case Western Reserve University School of Medicine, Cleveland, Ohio,Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio,Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, Ohio
| |
Collapse
|