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Hammerhøj A, Chakravarti D, Sato T, Jensen KB, Nielsen OH. Organoids as regenerative medicine for inflammatory bowel disease. iScience 2024; 27:110118. [PMID: 38947526 PMCID: PMC11214415 DOI: 10.1016/j.isci.2024.110118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic disorder with an increasing global prevalence. Managing disease activity relies on various pharmacological options. However, the effectiveness of current therapeutics is limited and not universally applicable to all patients and circumstances. Consequently, developing new management strategies is necessary. Recent advances in endoscopically obtained intestinal biopsy specimens have highlighted the potential of intestinal epithelial organoid transplantation as a novel therapeutic approach. Experimental studies using murine and human organoid transplantations have shown promising outcomes, including tissue regeneration and functional recovery. Human trials with organoid therapy have commenced; thus, this article provides readers with insights into the necessity and potential of intestinal organoid transplantation as a new regenerative therapeutic option in clinical settings and explores its associated challenges.
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Affiliation(s)
- Alexander Hammerhøj
- Department of Gastroenterology, Herlev Hospital, University of Copenhagen, Herlev, Denmark
| | - Deepavali Chakravarti
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Toshiro Sato
- Department of Organoid Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kim Bak Jensen
- Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ole Haagen Nielsen
- Department of Gastroenterology, Herlev Hospital, University of Copenhagen, Herlev, Denmark
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Akinsuyi OS, Xhumari J, Ojeda A, Roesch LFW. Gut permeability among Astronauts during Space missions. LIFE SCIENCES IN SPACE RESEARCH 2024; 41:171-180. [PMID: 38670644 DOI: 10.1016/j.lssr.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 02/02/2024] [Accepted: 03/13/2024] [Indexed: 04/28/2024]
Abstract
The space environment poses substantial challenges to human physiology, including potential disruptions in gastrointestinal health. Gut permeability has only recently become widely acknowledged for its potential to cause adverse effects on a systemic level, rendering it a critical factor to investigate in the context of spaceflight. Here, we propose that astronauts experience the onset of leaky gut during space missions supported by transcriptomic and metagenomic analysis of human and murine samples. A genetic map contributing to intestinal permeability was constructed from a systematic review of current literature. This was referenced against our re-analysis of three independent transcriptomic datasets which revealed significant changes in gene expression patterns associated with the gut barrier. Specifically, in astronauts during flight, we observed a substantial reduction in the expression genes that are crucial for intestinal barrier function, goblet cell development, gut microbiota modulation, and immune responses. Among rodent spaceflight studies, differential expression of cytokines, chemokines, and genes which regulate mucin production and post-translational modifications suggest a similar dysfunction of intestinal permeability. Metagenomic analysis of feces from two murine studies revealed a notable reduction probiotic, short chain fatty acid-producing bacteria and an increase in the Gram-negative pathogens, including Citrobacter rodentium, Enterobacter cloacea, Klebsiella aerogenes, and Proteus hauseri which promote LPS circulation, a recipe for barrier disruption and systemic inflammatory activation. These findings emphasize the critical need to understand the underlying mechanisms and develop interventions to maintain gastrointestinal health in space.
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Affiliation(s)
- Oluwamayowa S Akinsuyi
- Institute of Food and Agricultural Sciences, Department of Microbiology and Cell Science, University of Florida, Gainesville 32611, FL, USA
| | - Jessica Xhumari
- Institute of Food and Agricultural Sciences, Department of Microbiology and Cell Science, University of Florida, Gainesville 32611, FL, USA
| | - Amanda Ojeda
- Institute of Food and Agricultural Sciences, Department of Microbiology and Cell Science, University of Florida, Gainesville 32611, FL, USA
| | - Luiz F W Roesch
- Institute of Food and Agricultural Sciences, Department of Microbiology and Cell Science, University of Florida, Gainesville 32611, FL, USA.
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Zhao T, Liu S, Ma X, Shuai Y, He H, Guo T, Huang W, Wang Q, Liu S, Wang Z, Gong G, Huang L. Lycium barbarum arabinogalactan alleviates intestinal mucosal damage in mice by restoring intestinal microbes and mucin O-glycans. Carbohydr Polym 2024; 330:121882. [PMID: 38368089 DOI: 10.1016/j.carbpol.2024.121882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/19/2024]
Abstract
Structurally defined arabinogalactan (LBP-3) from Lycium barbarum have effect on improving intestinal barrier function. However, whether its intestinal barrier function depended on the changes of intestinal mucin O-glycans have not been investigated. A dextran sodium sulfate-induced acute colitis mouse model was employed to test prevention and treatment with LBP-3. The intestinal microbiota as well as colonic mucin O-glycan profiles were analyzed. Supplementation with LBP-3 inhibited harmful bacteria, including Desulfovibrionaceae, Enterobacteriaceae, and Helicobacteraceae while significantly increased the abundance of beneficial bacteria (e.g., Lachnospiraceae, Ruminococcaceae, and Lactobacillaceae). Notably, LBP-3 augmented the content of neutral O-glycans by stimulating the fucosylation glycoforms (F1H1N2 and F1H2N2), short-chain sulfated O-glycans (S1F1H1N2, S1H1N2, and S1H2N3), and sialylated medium- and long-chain O-glycans (F1H2N2A1, H2N3A1, and F1H3N2A1). In summary, we report that supplement LBP-3 significantly reduced pathological symptoms, restored the bacterial community, and promoted the expression of O-glycans to successfully prevent and alleviate colitis in a mouse model, especially in the LBP-3 prevention testing group. The underlying mechanism of action was investigated using glycomics to better clarify which the structurally defined LBP-3 were responsible for its beneficial effect against ulcerative colitis and assess its use as a functional food or pharmaceutical supplement.
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Affiliation(s)
- Tong Zhao
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Sining Liu
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Xiaoran Ma
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Yutong Shuai
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Houde He
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Tongyi Guo
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Wenqi Huang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Qian Wang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Shan Liu
- Tianren Goji Biotechnology Co., Ltd, Ningxia, China
| | - Zhongfu Wang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China
| | - Guiping Gong
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China.
| | - Linjuan Huang
- Shaanxi Natural Carbohydrate Resource Engineering Research Center, College of Food Science and Technology, Northwest University, Xi'an 710069, China.
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Saldova R, Thomsson KA, Wilkinson H, Chatterjee M, Singh AK, Karlsson NG, Knaus UG. Characterization of intestinal O-glycome in reactive oxygen species deficiency. PLoS One 2024; 19:e0297292. [PMID: 38483964 PMCID: PMC10939276 DOI: 10.1371/journal.pone.0297292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 01/02/2024] [Indexed: 03/17/2024] Open
Abstract
Inflammatory bowel disease (IBD) is characterized by chronic intestinal inflammation resulting from an inappropriate inflammatory response to intestinal microbes in a genetically susceptible host. Reactive oxygen species (ROS) generated by NADPH oxidases (NOX) provide antimicrobial defense, redox signaling and gut barrier maintenance. NADPH oxidase mutations have been identified in IBD patients, and mucus layer disruption, a critical aspect in IBD pathogenesis, was connected to NOX inactivation. To gain insight into ROS-dependent modification of epithelial glycosylation the colonic and ileal mucin O-glycome of mice with genetic NOX inactivation (Cyba mutant) was analyzed. O-glycans were released from purified murine mucins and analyzed by hydrophilic interaction ultra-performance liquid chromatography in combination with exoglycosidase digestion and mass spectrometry. We identified five novel glycans in ileum and found minor changes in O-glycans in the colon and ileum of Cyba mutant mice. Changes included an increase in glycans with terminal HexNAc and in core 2 glycans with Fuc-Gal- on C3 branch, and a decrease in core 3 glycans in the colon, while the ileum showed increased sialylation and a decrease in sulfated glycans. Our data suggest that NADPH oxidase activity alters the intestinal mucin O-glycans that may contribute to intestinal dysbiosis and chronic inflammation.
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Affiliation(s)
- Radka Saldova
- National Institute for Bioprocessing, NIBRT GlycoScience Group, Research and Training, Blackrock, Dublin, Ireland
- CÚRAM, SFI Research Centre for Medical Devices, National University of Ireland, Galway, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Kristina A. Thomsson
- Proteomics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Hayden Wilkinson
- National Institute for Bioprocessing, NIBRT GlycoScience Group, Research and Training, Blackrock, Dublin, Ireland
- CÚRAM, SFI Research Centre for Medical Devices, National University of Ireland, Galway, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | | | - Ashish K. Singh
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Niclas G. Karlsson
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Faculty of Health Science, Department of Life Science and Health, Oslo Metropolitan University, Oslo, Norway
| | - Ulla G. Knaus
- School of Medicine, University College Dublin, Dublin, Ireland
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Xu P, Cai X, Guan X, Xie W. Sulfoconjugation of protein peptides and glycoproteins in physiology and diseases. Pharmacol Ther 2023; 251:108540. [PMID: 37777160 PMCID: PMC10842354 DOI: 10.1016/j.pharmthera.2023.108540] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/02/2023]
Abstract
Protein sulfoconjugation, or sulfation, represents a critical post-translational modification (PTM) process that involves the attachment of sulfate groups to various positions of substrates within the protein peptides or glycoproteins. This process plays a dynamic and complex role in many physiological and pathological processes. Here, we summarize the importance of sulfation in the fields of oncology, virology, drug-induced liver injury (DILI), inflammatory bowel disease (IBD), and atherosclerosis. In oncology, sulfation is involved in tumor initiation, progression, and migration. In virology, sulfation influences viral entry, replication, and host immune response. In DILI, sulfation is associated with the incidence of DILI, where altered sulfation affects drug metabolism and toxicity. In IBD, dysregulation of sulfation compromises mucosal barrier and immune response. In atherosclerosis, sulfation influences the development of atherosclerosis by modulating the accumulation of lipoprotein, and the inflammation, proliferation, and migration of smooth muscle cells. The current review underscores the importance of further research to unravel the underlying mechanisms and therapeutic potential of targeting sulfoconjugation in various diseases. A better understanding of sulfation could facilitate the emergence of innovative diagnostic or therapeutic strategies.
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Affiliation(s)
- Pengfei Xu
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Hepatobiliary and Pancreatic Surgery, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430072, China
| | - Xinran Cai
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Xiuchen Guan
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing 100069, China
| | - Wen Xie
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15261, USA.
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Liu W, Xiong W, Liu W, Hirakawa J, Kawashima H. A novel monoclonal antibody against 6-sulfo sialyl Lewis x glycans attenuates murine allergic rhinitis by suppressing Th2 immune responses. Sci Rep 2023; 13:15740. [PMID: 37735247 PMCID: PMC10514285 DOI: 10.1038/s41598-023-43017-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 09/17/2023] [Indexed: 09/23/2023] Open
Abstract
Lymphocyte homing is mediated by the interaction between L-selectin on lymphocytes and its glycoprotein ligands modified with 6-sulfo sialyl Lewis x (6-sulfo sLex) glycans on high endothelial venules (HEVs) in peripheral lymph nodes (PLNs). However, the lack of specific antibodies reactive with both human and mouse 6-sulfo sLex has limited our understanding of its function in vivo. Here, we generated a novel monoclonal antibody, termed SF1, that specifically reacts with 6-sulfo sLex expressed on HEVs in both species in a manner dependent on sulfate, fucose, and sialic acid modifications. Glycan array and biolayer interferometry analyses indicated that SF1 specifically bound to 6-sulfo sLex with a dissociation constant of 6.09 × 10-9 M. SF1 specifically bound to four glycoproteins from PLNs corresponding to the molecular sizes of L-selectin ligand glycoproteins. Consistently, SF1 inhibited L-selectin-dependent lymphocyte rolling on 6-sulfo sLex-expressing cells ex vivo and lymphocyte homing to PLNs and nasal-associated lymphoid tissues in vivo. Furthermore, SF1 significantly attenuated ovalbumin-induced allergic rhinitis in mice in association with significant suppression of Th2 immune responses. Collectively, these results suggest that SF1 can be useful for the functional analysis of 6-sulfo sLex and may potentially serve as a novel therapeutic agent against immune-related diseases.
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Affiliation(s)
- Wei Liu
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-Ku, Chiba, 260-8675, Japan
| | - Wei Xiong
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-Ku, Chiba, 260-8675, Japan
| | - Wenxin Liu
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-Ku, Chiba, 260-8675, Japan
| | - Jotaro Hirakawa
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-Ku, Chiba, 260-8675, Japan
| | - Hiroto Kawashima
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-Ku, Chiba, 260-8675, Japan.
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Abo H, Muraki A, Harusato A, Imura T, Suzuki M, Takahashi K, Denning TL, Kawashima H. N-acetylglucosamine-6-O sulfation on intestinal mucins prevents obesity and intestinal inflammation by regulating gut microbiota. JCI Insight 2023; 8:e165944. [PMID: 37463055 PMCID: PMC10543739 DOI: 10.1172/jci.insight.165944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 07/11/2023] [Indexed: 08/23/2023] Open
Abstract
Intestinal mucins play an essential role in the defense against bacterial invasion and the maintenance of gut microbiota, which is instrumental in the regulation of host immune systems; hence, its dysregulation is a hallmark of metabolic disease and intestinal inflammation. However, the mechanism by which intestinal mucins control the gut microbiota as well as disease phenotypes remains nebulous. Herein, we report that N-acetylglucosamine (GlcNAc)-6-O sulfation of O-glycans on intestinal mucins performs a protective role against obesity and intestinal inflammation. Chst4-/- mice, lacking GlcNAc-6-O sulfation of the mucin O-glycans, showed significant weight gain and increased susceptibility to dextran sodium sulfate-induced colitis as well as colitis-associated cancer accompanied by significantly reduced immunoglobulin A (IgA) production caused by an impaired T follicular helper cell-mediated IgA response. Interestingly, the protective effects of GlcNAc-6-O sulfation against obesity and intestinal inflammation depend on the gut microbiota, evidenced by the modulation of the gut microbiota by cohousing or microbiota transplantation reversing disease phenotypes and IgA production. Collectively, our findings provide insight into the significance of host glycosylation, more specifically GlcNAc-6-O sulfation on intestinal mucins, in protecting against obesity and intestinal inflammation via regulation of the gut microbiota.
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Affiliation(s)
- Hirohito Abo
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
| | - Aoi Muraki
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
| | | | - Tetsuya Imura
- Department of Surgical Pathology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Maki Suzuki
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
| | - Kohta Takahashi
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
| | - Timothy L. Denning
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, USA
| | - Hiroto Kawashima
- Laboratory of Microbiology and Immunology, Graduate School of Pharmaceutical Science, Chiba University, Chiba, Japan
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Fernández-Lainez C, Aan de Stegge M, Silva-Lagos LA, López-Velázquez G, de Vos P. β(2 → 1)-β(2 → 6) branched graminan-type fructans and β(2 → 1) linear fructans impact mucus-related and endoplasmic reticulum stress-related genes in goblet cells and attenuate inflammatory responses in a fructan dependent fashion. Food Funct 2023; 14:1338-1348. [PMID: 36656019 DOI: 10.1039/d2fo02710k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Dietary fibers such as fructans have beneficial effects on intestinal health but it is unknown whether they impact goblet cells (GCs). Here we studied the effects of inulin-type fructans (ITFs) and graminan-type fructans (GTFs) with different molecular weights on mucus- and endoplasmic reticulum (ER) stress-related genes in intestinal GCs. To that end, GCs were incubated in the presence of ITFs or GTFs, or ITFs and GTFs + TNFα or the N-glycosylation inhibitor tunicamycin (Tm). IL-8 production by GCs was studied as a marker of inflammation. Effects between ITFs and GTFs were compared. We found a beneficial impact of GTFs especially on the expression of RETNLB. GTF II protects from the TNFα-induced gene expression dysregulation of MUC2, TFF3, GAL3ST2, and CHST5. Also, all the studied fructans prevented Tm-induced dysregulation of GAL3ST2. Interestingly, only the short chain fructans ITF I and GTF I have anti-inflammatory properties on GCs. All the studied fructans except ITF I decreased the expression of the ER stress-related HSPA5 and XBP1. All these benefits were fructan-structure and chain length dependent. Our study contributes to a better understanding of chemical structure-dependent beneficial effects of ITFs and GTFs on gut barrier function, which could contribute to prevention of gut inflammatory disorders.
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Affiliation(s)
- Cynthia Fernández-Lainez
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands. .,Laboratorio de Errores innatos del Metabolismo y Tamiz, Instituto Nacional de Pediatría, Av. Iman 1, 04530, Ciudad de México, Mexico.,Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México. Edificio D, 1° Piso. Circuito de Posgrados, Ciudad Universitaria, 04510, Ciudad de México, Mexico
| | - Myrthe Aan de Stegge
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.
| | - Luis Alfredo Silva-Lagos
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.
| | - Gabriel López-Velázquez
- Laboratorio de Biomoléculas y Salud Infantil, Instituto Nacional de Pediatría, Av. Iman 1, 04530, Cuidad de México, Mexico.
| | - Paul de Vos
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.
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Organoids transplantation as a new modality to design epithelial signature to create a membrane-protective sulfomucin-enriched segment. J Gastroenterol 2023; 58:379-393. [PMID: 36745238 DOI: 10.1007/s00535-023-01959-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/08/2023] [Indexed: 02/07/2023]
Abstract
BACKGROUND The organoids therapy for ulcerative colitis (UC) is under development. It is important to dissect how the engrafted epithelium can provide benefits for overcoming the vulnerability to inflammation. We mainly focused on the deliverability of sulfomucin, which is reported to play an important role in epithelial function. METHODS We analyzed each segment of colon epithelium to determine differences in sulfomucin production in both mice and human. Subsequently, we transplanted organoids established from sulfomucin-enriched region into the injured recipient epithelium following dextran sulfate sodium-induced colitis and analyzed the engrafted epithelium in mouse model. RESULTS In human normal colon, sulfomucin production was increased in proximal colon, whereas it was decreased in the inflammatory region of UC. In murine colon epithelium, increased sulfomucin production was found in cecum compared to distal small intestine and proximal colon. RNA sequencing analysis revealed that several key genes associated with sulfomucin production such as Papss2 and Slc26a1 were enriched in isolated murine cecum crypts. Then we established murine cecum organoids and transplanted them into the injured epithelium of distal colon. Although the expression of sulfomucin was temporally decreased in cecum organoids, its secretion was restored again in the engrafted patches after transplantation. Finally, we verified a part of mechanisms controlling sulfomucin production in human samples. CONCLUSION This study illustrated the deliverability of sulfomucin in the disease-relevant grafting model to design sulfomucin-producing epithelial units in severely injured distal colon. The current study is the basis for the better promotion of organoids transplantation therapy for refractory UC.
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Zhang Z, Dong M, Zallot R, Blackburn GM, Wang N, Wang C, Chen L, Baumann P, Wu Z, Wang Z, Fan H, Roth C, Jin Y, He Y. Mechanistic and Structural Insights into the Specificity and Biological Functions of Bacterial Sulfoglycosidases. ACS Catal 2022. [DOI: 10.1021/acscatal.2c05405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zhen Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Mochen Dong
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Rémi Zallot
- Institute of Life Sciences, Swansea University Medical School, Swansea SA2 8PP, U.K
| | - George Michael Blackburn
- School of Biosciences, University of Sheffield, Firth Court, Western Bank, Sheffield S10 2TN, U.K
| | - Nini Wang
- Key Laboratory of Synthetic and Natural Functional Molecule, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Chengjian Wang
- Glycobiology and Glycotechnology Research Center, College of Food Science and Technology, Northwest University, Xi’an 710069, P. R. China
| | - Long Chen
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Patrick Baumann
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Zuyan Wu
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Zhongfu Wang
- Glycobiology and Glycotechnology Research Center, College of Food Science and Technology, Northwest University, Xi’an 710069, P. R. China
| | - Haiming Fan
- Key Laboratory of Synthetic and Natural Functional Molecule, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
| | - Christian Roth
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Arnimallee 22, 14195 Berlin, German
| | - Yi Jin
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Yuan He
- Key Laboratory of Synthetic and Natural Functional Molecule, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P. R. China
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Xia B, Zhong R, Wu W, Luo C, Meng Q, Gao Q, Zhao Y, Chen L, Zhang S, Zhao X, Zhang H. Mucin O-glycan-microbiota axis orchestrates gut homeostasis in a diarrheal pig model. MICROBIOME 2022; 10:139. [PMID: 36045454 PMCID: PMC9429786 DOI: 10.1186/s40168-022-01326-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 07/13/2022] [Indexed: 05/03/2023]
Abstract
BACKGROUND Post-weaning diarrhea in piglets reduces growth performance and increases mortality, thereby causing serious economic losses. The intestinal epithelial cells and microbiota reciprocally regulate each other in order to maintain intestinal homeostasis and control inflammation. However, a relative paucity of research has been focused on the host-derived regulatory network that controls mucin O-glycans and thereby changes gut microbiota during diarrhea in infancy. At the development stage just after birth, the ontogeny of intestinal epithelium, immune system, and gut microbiota appear similar in piglets and human infants. Here, we investigated the changes of mucin O-glycans associated with gut microbiota using a diarrheal post-weaned piglet model. RESULTS We found that diarrhea disrupted the colonic mucus layer and caused aberrant mucin O-glycans, including reduced acidic glycans and truncated glycans, leading to an impaired gut microenvironment. Subsequently, the onset of diarrhea, changes in microbiota and bacterial translocation, resulting in compromised epithelial barrier integrity, enhanced susceptibility to inflammation, and mild growth faltering. Furthermore, we found the activation of NLRP3 inflammasome complexes in the diarrheal piglets when compared to the healthy counterparts, triggered the release of proinflammatory cytokines IL-1β and IL-18, and diminished autophagosome formation, specifically the defective conversion of LC3A/B I into LC3A/B II and the accumulation of p62. Additionally, selective blocking of the autophagy pathway by 3-MA led to the reduction in goblet cell-specific gene transcript levels in vitro. CONCLUSIONS We observed that diarrheal piglets exhibited colonic microbiota dysbiosis and mucosal barrier dysfunction. Our data demonstrated that diarrhea resulted in the activation of inflammasomes and autophagy restriction along with aberrant mucin O-glycans including reduced acidic glycans and truncated glycans. The results suggested the mucin O-glycans-microbiota axis is likely associated with diarrheal pathogenesis. Our study provides novel insights into the pathophysiology of early-weaning-induced diarrheal disease in piglets and potentially understanding of disease mechanisms of diarrhea for human infants. Understanding the molecular pathology and pathogenesis of diarrhea is a prerequisite for the development of novel and effective therapies. Our data suggest that facilitating O-glycan elongation, modifying the microbiota, and developing specific inhibitors to some key inflammasomes could be the options for therapy of diarrhea including human infants. Video abstract.
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Affiliation(s)
- Bing Xia
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206 China
| | - Ruqing Zhong
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Weida Wu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Chengzeng Luo
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Qingshi Meng
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Qingtao Gao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Yong Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Liang Chen
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Sheng Zhang
- Institute of Biotechnology, Cornell University, Ithaca, NY 14853 USA
| | - Xin Zhao
- Department of Animal Science, McGill University, Montreal, Quebec H9X3V9 Canada
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193 China
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12
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Bergstrom K, Xia L. The barrier and beyond: Roles of intestinal mucus and mucin-type O-glycosylation in resistance and tolerance defense strategies guiding host-microbe symbiosis. Gut Microbes 2022; 14:2052699. [PMID: 35380912 PMCID: PMC8986245 DOI: 10.1080/19490976.2022.2052699] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Over the past two decades, our appreciation of the gut mucus has moved from a static lubricant to a dynamic and essential component of the gut ecosystem that not only mediates the interface between host tissues and vast microbiota, but regulates how this ecosystem functions to promote mutualistic symbioses and protect from microbe-driven diseases. By delving into the complex chemistry and biology of the mucus, combined with innovative in vivo and ex vivo approaches, recent studies have revealed novel insights into the formation and function of the mucus system, the O-glycans that make up this system, and how they mediate two major host-defense strategies - resistance and tolerance - to reduce damage caused by indigenous microbes and opportunistic pathogens. This current review summarizes these findings by highlighting the emerging roles of mucus and mucin-type O-glycans in influencing host and microbial physiology with an emphasis on host defense strategies against bacteria in the gastrointestinal tract.
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Affiliation(s)
- Kirk Bergstrom
- Department of Biology, University of British Columbia, Okanagan Campus, 3333 University Way, Kelowna, British ColumbiaV1V 1V7, Canada,Kirk Bergstrom Department of Biology, University of British Columbia, 3333 University Way, Kelowna, B.C. Canada
| | - Lijun Xia
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, OK, Oklahoma73104, USA,Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, OK, Oklahoma73104, USA,CONTACT Lijun Xia Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, OK, Oklahoma73104, USA
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13
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Wang R, Moniruzzaman M, Wong KY, Wiid P, Harding A, Giri R, Tong W(H, Creagh J, Begun J, McGuckin MA, Hasnain SZ. Gut microbiota shape the inflammatory response in mice with an epithelial defect. Gut Microbes 2022; 13:1-18. [PMID: 33645438 PMCID: PMC7928202 DOI: 10.1080/19490976.2021.1887720] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Intestinal epithelial cell endoplasmic reticulum (ER) stress has been implicated in intestinal inflammation. It remains unclear whether ER stress is an initiator of or a response to inflammation. Winnie mice, carrying a Muc2 gene mutation resulting in intestinal goblet cell ER stress, develop spontaneous colitis with a depleted mucus barrier and increased bacterial translocation. This study aims to determine whether the microbiota was required for the development of Winnie colitis, and whether protein misfolding itself can initiate inflammation directly in absence of the microbiota. To assess the role of microbiota in driving Winnie colitis, WT and Winnie mice on the same background were rederived into the germ-free facility and housed in the Trexler-type soft-sided isolators. The colitis phenotype of these mice was assessed and compared to WT and Winnie mice housed within a specific pathogen-free facility. We found that Winnie colitis was substantially reduced but not abolished under germ-free conditions. Expression of inflammatory cytokine genes was reduced but several chemokines remained elevated in absence of microbiota. Concomitantly, ER stress was also diminished, although mucin misfolding persisted. RNA-Seq revealed that Winnie differentiated colon organoids have decreased expression of the negative regulators of the inflammatory response compared to WT. This data along with the increase in Mip2a chemokine expression, suggests that the epithelial cells in the Winnie mice are more responsive to stimuli. Moreover, the data demonstrate that intestinal epithelial intrinsic protein misfolding can prime an inflammatory response without initiating the unfolded protein response in the absence of the microbiota. However, the microbiota is necessary for the amplification of colitis in Winnie mice. Genetic predisposition to mucin misfolding in secretory cells initiates mild inflammatory signals. However, the inflammatory signal sets a forward-feeding cycle establishing progressive inflammation in the presence of microbiota.Abbreviations: Endoplasmic Reticulum: ER; Mucin-2: Muc-2; GF: Germ-Free; Inflammatory Bowel Disease: IBD.
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Affiliation(s)
- Ran Wang
- Immunopathology Group, Mater Research Institute – The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Md Moniruzzaman
- Immunopathology Group, Mater Research Institute – The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Kuan Yau Wong
- Immunopathology Group, Mater Research Institute – The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Percival Wiid
- Immunopathology Group, Mater Research Institute – The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Alexa Harding
- Immunopathology Group, Mater Research Institute – The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Rabina Giri
- Inflammatory Bowel Disease Group, Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Wendy (Hui) Tong
- Immunopathology Group, Mater Research Institute – The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Jackie Creagh
- Immunopathology Group, Mater Research Institute – The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Jakob Begun
- Inflammatory Bowel Disease Group, Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, Australia,Mater Adult Hospital, Mater Health Services, South Brisbane, Australia
| | - Michael A. McGuckin
- Immunopathology Group, Mater Research Institute – The University of Queensland, Translational Research Institute, Brisbane, Australia,Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Australia
| | - Sumaira Z. Hasnain
- Immunopathology Group, Mater Research Institute – The University of Queensland, Translational Research Institute, Brisbane, Australia,Australian Infectious Disease Research Centre, The University of Queensland, Brisbane, Australia,CONTACT Sumaira Z. Hasnain Mater Research Institute – University of Queensland, Translational Research Institute, 37 Kent St, Woolloongabba, Qld4102, Australia; Ran Wang Mater Research Institute – University of Queensland, Translational Research Institute, 37 Kent St, Woolloongabba, Qld 4102, Australia
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14
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Brazil JC, Parkos CA. Finding the sweet spot: glycosylation mediated regulation of intestinal inflammation. Mucosal Immunol 2022; 15:211-222. [PMID: 34782709 PMCID: PMC8591159 DOI: 10.1038/s41385-021-00466-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/11/2021] [Accepted: 10/14/2021] [Indexed: 02/04/2023]
Abstract
Glycans are essential cellular components that facilitate a range of critical functions important for tissue development and mucosal homeostasis. Furthermore, specific alterations in glycosylation represent important diagnostic hallmarks of cancer that contribute to tumor cell dissociation, invasion, and metastasis. However, much less is known about how glycosylation contributes to the pathobiology of inflammatory mucosal diseases. Here we will review how epithelial and immune cell glycosylation regulates gut homeostasis and how inflammation-driven changes in glycosylation contribute to intestinal pathobiology.
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Affiliation(s)
- Jennifer C. Brazil
- grid.214458.e0000000086837370Department of Pathology, University of Michigan, Ann Arbor, MI 48109 USA
| | - Charles A. Parkos
- grid.214458.e0000000086837370Department of Pathology, University of Michigan, Ann Arbor, MI 48109 USA
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15
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Parrish A, Boudaud M, Kuehn A, Ollert M, Desai MS. Intestinal mucus barrier: a missing piece of the puzzle in food allergy. Trends Mol Med 2021; 28:36-50. [PMID: 34810087 DOI: 10.1016/j.molmed.2021.10.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/22/2021] [Accepted: 10/22/2021] [Indexed: 12/13/2022]
Abstract
The prevalence of food allergies has reached epidemic levels but the cause remains largely unknown. We discuss the clinical relevance of the gut mucosal barrier as a site for allergic sensitization to food. In this context, we focus on an important but overlooked part of the mucosal barrier in pathogenesis, the glycoprotein-rich mucus layer, and call attention to both beneficial and detrimental aspects of mucus-gut microbiome interactions. Studying the intricate links between the mucus barrier, the associated bacteria, and the mucosal immune system may advance our understanding of the mechanisms and inform prevention and treatment strategies in food allergy.
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Affiliation(s)
- Amy Parrish
- Department of Infection and Immunity, Luxembourg Institute of Health, 4354 Esch-sur-Alzette, Luxembourg; Faculty of Science, Technology and Medicine, University of Luxembourg, 4365 Esch-sur-Alzette, Luxembourg
| | - Marie Boudaud
- Department of Infection and Immunity, Luxembourg Institute of Health, 4354 Esch-sur-Alzette, Luxembourg
| | - Annette Kuehn
- Department of Infection and Immunity, Luxembourg Institute of Health, 4354 Esch-sur-Alzette, Luxembourg
| | - Markus Ollert
- Department of Infection and Immunity, Luxembourg Institute of Health, 4354 Esch-sur-Alzette, Luxembourg; Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, 5000 Odense, Denmark
| | - Mahesh S Desai
- Department of Infection and Immunity, Luxembourg Institute of Health, 4354 Esch-sur-Alzette, Luxembourg; Odense Research Center for Anaphylaxis, Department of Dermatology and Allergy Center, Odense University Hospital, University of Southern Denmark, 5000 Odense, Denmark.
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16
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Berkhout MD, Plugge CM, Belzer C. How microbial glycosyl hydrolase activity in the gut mucosa initiates microbial cross-feeding. Glycobiology 2021; 32:182-200. [PMID: 34939101 PMCID: PMC8966484 DOI: 10.1093/glycob/cwab105] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/30/2021] [Accepted: 10/06/2021] [Indexed: 11/12/2022] Open
Abstract
The intestinal epithelium is protected from direct contact with gut microbes by a mucus layer. This mucus layer consists of secreted mucin glycoproteins. The outer mucus layer in the large intestine forms a niche that attracts specific gut microbiota members of which several gut commensals can degrade mucin. Mucin glycan degradation is a complex process that requires a broad range of glycan degrading enzymes, as mucin glycans are intricate and diverse molecules. Consequently, it is hypothesised that microbial mucin breakdown requires concerted action of various enzymes in a network of multiple resident microbes at the gut mucosa. This review investigates the evolutionary relationships of microbial CAZymes that are potentially involved in mucin glycan degradation and focuses on the role that microbial enzymes play in the degradation of gut mucin glycans in microbial cross-feeding and syntrophic interactions.
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Affiliation(s)
- Maryse D Berkhout
- Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708WE Wageningen, The Netherlands
| | - Caroline M Plugge
- Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708WE Wageningen, The Netherlands
| | - Clara Belzer
- Laboratory of Microbiology, Wageningen University and Research, Stippeneng 4, 6708WE Wageningen, The Netherlands
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17
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Luis AS, Jin C, Pereira GV, Glowacki RWP, Gugel SR, Singh S, Byrne DP, Pudlo NA, London JA, Baslé A, Reihill M, Oscarson S, Eyers PA, Czjzek M, Michel G, Barbeyron T, Yates EA, Hansson GC, Karlsson NG, Cartmell A, Martens EC. A single sulfatase is required to access colonic mucin by a gut bacterium. Nature 2021; 598:332-337. [PMID: 34616040 PMCID: PMC9128668 DOI: 10.1038/s41586-021-03967-5] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 08/26/2021] [Indexed: 12/29/2022]
Abstract
Humans have co-evolved with a dense community of microbial symbionts that inhabit the lower intestine. In the colon, secreted mucus creates a barrier that separates these microorganisms from the intestinal epithelium1. Some gut bacteria are able to utilize mucin glycoproteins, the main mucus component, as a nutrient source. However, it remains unclear which bacterial enzymes initiate degradation of the complex O-glycans found in mucins. In the distal colon, these glycans are heavily sulfated, but specific sulfatases that are active on colonic mucins have not been identified. Here we show that sulfatases are essential to the utilization of distal colonic mucin O-glycans by the human gut symbiont Bacteroides thetaiotaomicron. We characterized the activity of 12 different sulfatases produced by this species, showing that they are collectively active on all known sulfate linkages in O-glycans. Crystal structures of three enzymes provide mechanistic insight into the molecular basis of substrate specificity. Unexpectedly, we found that a single sulfatase is essential for utilization of sulfated O-glycans in vitro and also has a major role in vivo. Our results provide insight into the mechanisms of mucin degradation by a prominent group of gut bacteria, an important process for both normal microbial gut colonization2 and diseases such as inflammatory bowel disease3.
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Affiliation(s)
- Ana S Luis
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA.
- Department of Medical Biochemistry, Institute for Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Chunsheng Jin
- Department of Medical Biochemistry, Institute for Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Robert W P Glowacki
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Sadie R Gugel
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Shaleni Singh
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Dominic P Byrne
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Nicholas A Pudlo
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - James A London
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Arnaud Baslé
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Mark Reihill
- Centre for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin, Ireland
| | - Stefan Oscarson
- Centre for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin, Ireland
| | - Patrick A Eyers
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Mirjam Czjzek
- Sorbonne Université, Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Roscoff, Bretagne, France
| | - Gurvan Michel
- Sorbonne Université, Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Roscoff, Bretagne, France
| | - Tristan Barbeyron
- Sorbonne Université, Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Roscoff, Bretagne, France
| | - Edwin A Yates
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Gunnar C Hansson
- Department of Medical Biochemistry, Institute for Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry, Institute for Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Alan Cartmell
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK.
| | - Eric C Martens
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA.
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18
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Highly sialylated mucin-type glycopeptide from porcine intestinal mucosa after heparin extraction: O-glycan profiling and immunological activity evaluation. Glycoconj J 2021; 38:527-537. [PMID: 34480673 DOI: 10.1007/s10719-021-10014-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 07/14/2021] [Accepted: 07/29/2021] [Indexed: 02/08/2023]
Abstract
Mucins are the major proteins that distributed on the intestinal mucosa layer and protect the intestine from pathogens infection. The composition of intestinal mucin O-glycans can affect the health of the gastrointestinal tract in pigs. Porcine intestinal mucosa is widely used as the main raw material of heparin extraction. The heparin extraction residues rich in mucins were usually wasted. The structure of mucin derived O-glycans in porcine intestinal mucosa are currently unknown. In this study, we isolated the mucins from the heparin extraction residues and profiled the O-glycans. After heparin extraction, mucin was digested with trypsin, and separated by strong anion exchange chromatography. The mucin derived O-glycans were release by alkaline β elimination, and analyzed by ultra high performance liquid chromatography-porous graphitized carbon-Fourier transform mass spectrometry (UPLC-PGC-FTMS/MS). Thirty five kinds of O-glycans were identified, most of which were Core 3-derived glycans. In particular, the O-glycans containing sialic acid Neu5Ac accounted for 71.93% of the total O-glycans, which were different from that of other species, including mouse intestine, fish intestine, and porcine colon. The high content sialylated mucin may explain its effect in biological processes. Furthermore, the immunological activity results indicated that the porcine intestinal mucin could promote phagocytosis and proliferation without any cytotoxic effects, which may aid in the development of immunomodulators.
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19
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Xu P, Xi Y, Zhu J, Zhang M, Luka Z, Stolz DB, Cai X, Xie Y, Xu M, Ren S, Huang Z, Yang D, York JD, Ma X, Xie W. Intestinal Sulfation Is Essential to Protect Against Colitis and Colonic Carcinogenesis. Gastroenterology 2021; 161:271-286.e11. [PMID: 33819483 PMCID: PMC8238844 DOI: 10.1053/j.gastro.2021.03.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 03/26/2021] [Accepted: 03/30/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Sulfation is a conjugation reaction essential for numerous biochemical and cellular functions in mammals. The 3'-phosphoadenosine 5'-phosphosulfate (PAPS) synthase 2 (PAPSS2) is the key enzyme to generate PAPS, which is the universal sulfonate donor for all sulfation reactions. The goal of this study was to determine whether and how PAPSS2 plays a role in colitis and colonic carcinogenesis. METHODS Tissue arrays of human colon cancer specimens, gene expression data, and clinical features of cancer patients were analyzed. Intestinal-specific Papss2 knockout mice (Papss2ΔIE) were created and subjected to dextran sodium sulfate-induced colitis and colonic carcinogenesis induced by a combined treatment of azoxymethane and dextran sodium sulfate or azoxymethane alone. RESULTS The expression of PAPSS2 is decreased in the colon cancers of mice and humans. The lower expression of PAPSS2 in colon cancer patients is correlated with worse survival. Papss2ΔIE mice showed heightened sensitivity to colitis and colon cancer by damaging the intestinal mucosal barrier, increasing intestinal permeability and bacteria infiltration, and worsening the intestinal tumor microenvironment. Mechanistically, the Papss2ΔIE mice exhibited reduced intestinal sulfomucin content. Metabolomic analyses revealed the accumulation of bile acids, including the Farnesoid X receptor antagonist bile acid tauro-β-muricholic acid, and deficiency in the formation of bile acid sulfates in the colon of Papss2ΔIE mice. CONCLUSIONS We have uncovered an important role of PAPSS2-mediated sulfation in colitis and colonic carcinogenesis. Intestinal sulfation may represent a potential diagnostic marker and PAPSS2 may serve as a potential therapeutic target for inflammatory bowel disease and colon cancer.
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Affiliation(s)
- Pengfei Xu
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Yue Xi
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania; School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Junjie Zhu
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Min Zhang
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Zigmund Luka
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee
| | - Donna B Stolz
- Departments of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Xinran Cai
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Yang Xie
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Meishu Xu
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Songrong Ren
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Zhiying Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
| | - Da Yang
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - John D York
- Department of Biochemistry, Vanderbilt University, Nashville, Tennessee
| | - Xiaochao Ma
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Wen Xie
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania; Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania.
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20
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The effects of diet and gut microbiota on the regulation of intestinal mucin glycosylation. Carbohydr Polym 2021; 258:117651. [DOI: 10.1016/j.carbpol.2021.117651] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 12/13/2022]
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21
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Placet M, Molle CM, Arguin G, Geha S, Gendron FP. The expression of P2Y 6 receptor promotes the quality of mucus in colitic mice. FEBS J 2021; 288:5459-5473. [PMID: 33713543 DOI: 10.1111/febs.15819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 03/11/2021] [Indexed: 01/01/2023]
Abstract
In the intestine, mucins are expressed and secreted by goblet cells and enterocytes in a constitutive manner and in response to secretagogues to form a protective mucus layer. This protective barrier is often lost in inflammatory bowel disease (IBD). Interestingly, extracellular nucleotides, through P2Y receptors, were identified as mucin secretagogues in mucinous epithelia. These nucleotides are found in the intestine's extracellular milieu under basal conditions and in higher concentrations in pathologies such as IBD. It was observed that the mucus layer was affected in P2ry6 knockout mice suffering from dextran sodium sulfate (DSS)-induced colitis. P2ry6-/- mice were more sensitive to DSS-induced colitis, resulting in larger ulcers and increased disease activity index. Interestingly, the absence of P2Y6 receptor expression negatively affected the mucus quality, as shown by a reduction in sulfomucin staining and the absence of a dense internal fucosylated mucin layer in P2ry6-/- mice. Hence, we cannot rule out that the absence of P2Y6 receptors in knockout animals could negatively impact mucin secretion. However, we did not measure a reduction in the number of goblet cells, as previously reported. Instead, the results suggest that goblet cells rapidly discharged mucins to compensate for the mucus layer's increased lability, which resulted in empty goblet cells that are less visible to mucin staining. This study's results, along with previous reports, point toward a protective role for the P2Y6 receptor in IBD.
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Affiliation(s)
- Morgane Placet
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Caroline M Molle
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Guillaume Arguin
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Sameh Geha
- Department of Pathology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
| | - Fernand-Pierre Gendron
- Department of Immunology and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada.,Institut de Pharmacologie de Sherbrooke, Faculty of Medicine and Health Sciences, Université de Sherbrooke, QC, Canada
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22
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Kwan CS, Cerullo AR, Braunschweig AB. Design and Synthesis of Mucin-Inspired Glycopolymers. Chempluschem 2020; 85:2704-2721. [PMID: 33346954 DOI: 10.1002/cplu.202000637] [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: 09/21/2020] [Revised: 12/08/2020] [Indexed: 12/11/2022]
Abstract
Mucins are bottlebrush biopolymers that are glycoproteins on the surfaces of cells and as hydrogels secreted inside and outside the body. Mucin function in biology includes cell-cell recognition, signaling, protection, adhesion, and lubrication. Because of their attractive and diverse properties, mucins have recently become the focus of synthetic efforts by researchers who hope to understand and emulate these biomaterials. This review is focused on the development of methodologies for preparing mucin-inspired synthetic oligomers and glycopolymers, including solid-phase synthesis, polymerization of glycosylated monomers, and post-polymerization grafting of glycans to polymer chains. How these synthetic mucins have been used in health applications is discussed. Natural mucins are formed from a conserved set of monomers that are combined into chains of different sequences and lengths to achieve materials with widely diverse properties. Adopting this design paradigm from natural mucins could lead to next-generation bioinspired synthetic materials.
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Affiliation(s)
- Chak-Shing Kwan
- The Advanced Science Research Center at the, Graduate Center of the City University of New York, 85 St. Nicholas Terrace, New York, NY, 10031, USA.,Department of Chemistry and Biochemistry, Hunter College, 695 Park Ave, New York, NY, 10065, USA
| | - Antonio R Cerullo
- The Advanced Science Research Center at the, Graduate Center of the City University of New York, 85 St. Nicholas Terrace, New York, NY, 10031, USA.,Department of Chemistry and Biochemistry, Hunter College, 695 Park Ave, New York, NY, 10065, USA.,The PhD program in Biochemistry, Graduate Center of the City University of New York, 365 5th Ave, New York, NY, 10016, USA
| | - Adam B Braunschweig
- The Advanced Science Research Center at the, Graduate Center of the City University of New York, 85 St. Nicholas Terrace, New York, NY, 10031, USA.,Department of Chemistry and Biochemistry, Hunter College, 695 Park Ave, New York, NY, 10065, USA.,The PhD program in Biochemistry, Graduate Center of the City University of New York, 365 5th Ave, New York, NY, 10016, USA.,The PhD program in Chemistry, Graduate Center of the City University of New York, 365 5th Ave, New York, NY, 10016, USA
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23
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Kudelka MR, Stowell SR, Cummings RD, Neish AS. Intestinal epithelial glycosylation in homeostasis and gut microbiota interactions in IBD. Nat Rev Gastroenterol Hepatol 2020; 17:597-617. [PMID: 32710014 PMCID: PMC8211394 DOI: 10.1038/s41575-020-0331-7] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/05/2020] [Indexed: 02/08/2023]
Abstract
Inflammatory bowel disease (IBD) affects 6.8 million people globally. A variety of factors have been implicated in IBD pathogenesis, including host genetics, immune dysregulation and gut microbiota alterations. Emerging evidence implicates intestinal epithelial glycosylation as an underappreciated process that interfaces with these three factors. IBD is associated with increased expression of truncated O-glycans as well as altered expression of terminal glycan structures. IBD genes, glycosyltransferase mislocalization, altered glycosyltransferase and glycosidase expression and dysbiosis drive changes in the glycome. These glycan changes disrupt the mucus layer, glycan-lectin interactions, host-microorganism interactions and mucosal immunity, and ultimately contribute to IBD pathogenesis. Epithelial glycans are especially critical in regulating the gut microbiota through providing bacterial ligands and nutrients and ultimately determining the spatial organization of the gut microbiota. In this Review, we discuss the regulation of intestinal epithelial glycosylation, altered epithelial glycosylation in IBD and mechanisms for how these alterations contribute to disease pathobiology. We hope that this Review provides a foundation for future studies on IBD glycosylation and the emergence of glycan-inspired therapies for IBD.
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Affiliation(s)
- Matthew R Kudelka
- Medical Scientist Training Program, Emory University School of Medicine, Atlanta, GA, USA
- Department of Internal Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Sean R Stowell
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Andrew S Neish
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, USA.
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24
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Boleij M, Kleikamp H, Pabst M, Neu TR, van Loosdrecht MCM, Lin Y. Decorating the Anammox House: Sialic Acids and Sulfated Glycosaminoglycans in the Extracellular Polymeric Substances of Anammox Granular Sludge. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:5218-5226. [PMID: 32227885 PMCID: PMC7181257 DOI: 10.1021/acs.est.9b07207] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 03/27/2020] [Accepted: 03/31/2020] [Indexed: 05/22/2023]
Abstract
Anammox (anaerobic ammonium oxidation) bacteria are important for the nitrogen cycle in both natural environments and wastewater treatment plants. These bacteria have a strong tendency to grow in aggregates like biofilms and granular sludge. To understand the formation of anammox aggregates, it is required to unravel the composition of the extracellular polymeric substances (EPS), which are produced by the bacteria to develop into aggregates and granules. Here, we investigated anionic polymers in anammox granular sludge, focussing on sialic acids and sulfated glycosaminoglycans. Quantification assays and fluorescent stains indicated that sialic acids and sulfated glycosaminoglycans were present in the anammox EPS (1.6% equivalents of sialic acids and 2.4% equivalents of sulfated glycosaminoglycans). Additionally, the potential genes for the biosynthesis of sialic acids and sulfated glycosaminoglycans were analyzed in the anammox draft genomes. The finding of these components in anammox granular sludge and previously in other nonpathogenic bacteria pointed out that sialic acids and sulfated glycosaminoglycans are worth investigating in the context of a broader function in microbial communities and biofilm systems in general.
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Affiliation(s)
- Marissa Boleij
- Department
of Biotechnology, Delft University of Technology, van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Hugo Kleikamp
- Department
of Biotechnology, Delft University of Technology, van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Martin Pabst
- Department
of Biotechnology, Delft University of Technology, van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Thomas R. Neu
- Department
of River Ecology, Helmholtz Centre for Environmental
Research − UFZ, Brueckstrasse 3A, Magdeburg 39114, Germany
| | - Mark C. M. van Loosdrecht
- Department
of Biotechnology, Delft University of Technology, van der Maasweg 9, Delft 2629 HZ, The Netherlands
| | - Yuemei Lin
- Department
of Biotechnology, Delft University of Technology, van der Maasweg 9, Delft 2629 HZ, The Netherlands
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25
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Etienne-Mesmin L, Chassaing B, Desvaux M, De Paepe K, Gresse R, Sauvaitre T, Forano E, de Wiele TV, Schüller S, Juge N, Blanquet-Diot S. Experimental models to study intestinal microbes–mucus interactions in health and disease. FEMS Microbiol Rev 2019; 43:457-489. [DOI: 10.1093/femsre/fuz013] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 05/31/2019] [Indexed: 02/06/2023] Open
Abstract
ABSTRACT
A close symbiotic relationship exists between the intestinal microbiota and its host. A critical component of gut homeostasis is the presence of a mucus layer covering the gastrointestinal tract. Mucus is a viscoelastic gel at the interface between the luminal content and the host tissue that provides a habitat to the gut microbiota and protects the intestinal epithelium. The review starts by setting up the biological context underpinning the need for experimental models to study gut bacteria-mucus interactions in the digestive environment. We provide an overview of the structure and function of intestinal mucus and mucins, their interactions with intestinal bacteria (including commensal, probiotics and pathogenic microorganisms) and their role in modulating health and disease states. We then describe the characteristics and potentials of experimental models currently available to study the mechanisms underpinning the interaction of mucus with gut microbes, including in vitro, ex vivo and in vivo models. We then discuss the limitations and challenges facing this field of research.
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Affiliation(s)
- Lucie Etienne-Mesmin
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Benoit Chassaing
- Neuroscience Institute, Georgia State University, 100 Piedmont Ave SE, Atlanta, GA 30303 , USA
- Institute for Biomedical Sciences, Georgia State University, 100 Piedmont Ave, Atlanta, GA 30303 , USA
| | - Mickaël Desvaux
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Kim De Paepe
- Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Raphaële Gresse
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Thomas Sauvaitre
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Evelyne Forano
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Tom Van de Wiele
- Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Stephanie Schüller
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR7UQ, United Kingdom
| | - Nathalie Juge
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR7UQ, United Kingdom
| | - Stéphanie Blanquet-Diot
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
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26
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Ren C, Dokter‐Fokkens J, Figueroa Lozano S, Zhang Q, de Haan BJ, Zhang H, Faas MM, de Vos P. Fibroblasts Impact Goblet Cell Responses to Lactic Acid Bacteria After Exposure to Inflammatory Cytokines and Mucus Disruptors. Mol Nutr Food Res 2019; 63:e1801427. [PMID: 30977971 PMCID: PMC6618108 DOI: 10.1002/mnfr.201801427] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/21/2019] [Indexed: 12/15/2022]
Abstract
SCOPE Mucus produced by goblet cells contributes to gut barrier function. Lactic acid bacteria (LAB) have been shown to impact mucus production. It is not completely known whether mucus production is influenced by the abundantly present fibroblasts in the intestine. METHODS AND RESULTS The influence of fibroblasts on mucus-related genes including mucin-2 (MUC2), trefoil factor 3 (TFF3), resistin-like molecule β (RETNLB), carbohydrate sulfotransferase 5 (CHST5), and galactose-3-O-sulfotransferase 2 (GAL3ST2) is examined after co-culture of LS174T-goblet cells and CCD-18Co colonic fibroblasts in the presence and absence of LAB-strains known to impact mucus function. This is also tested after exposure to TNF-α, IL-13, or the mucin synthesis inhibitor tunicamycin (Tm). Effects of fibroblasts are treatment duration- and bacterial species-dependent under homeostatic conditions. During TNF-α challenge, fibroblasts reverse Lactobacillus (L.) rhamnosus CCFM237-elicited declined TFF3 expression. After IL-13 exposure, L. rhamnosus CCFM237 and L. fermentum CCFM787 attenuate enhanced TFF3 and RETNLB expression, respectively, only in the presence of fibroblasts. LAB has no effects on Tm-induced decreased expression of goblet cell-related genes regardless of the presence of fibroblasts. CONCLUSION It is demonstrated that goblet cell-fibroblast crosstalk impacts mucus synthesis and influences the effects of LAB on goblet cell-related genes. Effects are LAB-species and stressor dependent.
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Affiliation(s)
- Chengcheng Ren
- Immunoendocrinology, Division of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center Groningen9700RBGroningenThe Netherlands
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
| | - Jelleke Dokter‐Fokkens
- Immunoendocrinology, Division of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center Groningen9700RBGroningenThe Netherlands
| | - Susana Figueroa Lozano
- Immunoendocrinology, Division of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center Groningen9700RBGroningenThe Netherlands
| | - Qiuxiang Zhang
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
| | - Bart J. de Haan
- Immunoendocrinology, Division of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center Groningen9700RBGroningenThe Netherlands
| | - Hao Zhang
- School of Food Science and TechnologyJiangnan UniversityWuxi214122China
| | - Marijke M. Faas
- Immunoendocrinology, Division of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center Groningen9700RBGroningenThe Netherlands
| | - Paul de Vos
- Immunoendocrinology, Division of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center Groningen9700RBGroningenThe Netherlands
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27
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Fu Q, Li G, Wang C, Wang Y, Li Q, Hao J, Yu G. Profiling and Structural Characterization of High Neu5Gc or Sulfate-containing O-glycans from Hyla Rabbit Intestinal Mucin. Molecules 2019; 24:molecules24071365. [PMID: 30959980 PMCID: PMC6480446 DOI: 10.3390/molecules24071365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 04/01/2019] [Accepted: 04/04/2019] [Indexed: 12/19/2022] Open
Abstract
Intestinal mucins constitute the major component of the mucus covering the epithelium of the gastrointestinal tract, thereby forming a barrier against microbial colonization. Rabbits are bred in large numbers worldwide, with little known about intestinal O-glycosylation despite this insight being crucial to the understanding of host-pathogen interactions. In the present study, a major mucin-type glycopeptide (RIF6) of hyla rabbit intestine was isolated and the O-glycans were extensively characterized based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) combined with bioinformatics approaches. Thirty-three O-glycans were identified, and most of them were sulfated or sialylated glycans. It was worth noting that Neu5Gc-containing structures within sialylated O-glycans accounted for 91%, which were extremely different from that of other species including humans, mice, chickens, etc. Sulfated glycans accounted for 58%, unique disufated and sulfated-sialylated glycans were also detected in rabbit intestinal mucin. These structural characterization reflected species diversity and may provide deeper insights into explaining the adaptability of hyla rabbit to the environment.
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Affiliation(s)
- Qianyun Fu
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Guoyun Li
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China.
| | - Chen Wang
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Ya Wang
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Qinying Li
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Jiejie Hao
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China.
| | - Guangli Yu
- Key Laboratory of Marine Drugs, Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China.
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28
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Ikegami T. Hydrophilic interaction chromatography for the analysis of biopharmaceutical drugs and therapeutic peptides: A review based on the separation characteristics of the hydrophilic interaction chromatography phases. J Sep Sci 2019; 42:130-213. [DOI: 10.1002/jssc.201801074] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 11/17/2018] [Accepted: 11/18/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Tohru Ikegami
- Faculty of Molecular Chemistry and Engineering; Kyoto Institute of Technology; Kyoto Japan
- Institute of Pharmaceutical Sciences; Pharmaceutical (Bio-) Analysis; Eberhard-Karls Universität Tübingen; Tübingen Germany
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29
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Boleij M, Pabst M, Neu TR, van Loosdrecht MCM, Lin Y. Identification of Glycoproteins Isolated from Extracellular Polymeric Substances of Full-Scale Anammox Granular Sludge. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:13127-13135. [PMID: 30335377 PMCID: PMC6256349 DOI: 10.1021/acs.est.8b03180] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 10/11/2018] [Accepted: 10/18/2018] [Indexed: 05/22/2023]
Abstract
ANaerobic AMMonium OXidation (anammox) is an established process for efficient nitrogen removal from wastewater, relying on anammox bacteria to form stable biofilms or granules. To understand the formation, structure, and stability of anammox granules, it is important to determine the composition of the extracellular polymeric substances (EPS). The aim of this research was to elucidate the nature of the proteins, which are the major fraction of the EPS and were suspected to be glycosylated. EPS were extracted from full-scale anammox granular sludge, dominated by " Candidatus Brocadia", and subjected to denaturing polyacrylamide gel electrophoresis. By further analysis with mass spectrometry, a high abundant glycoprotein, carrying a heterogeneous O-glycan structure, was identified. The potential glycosylation sequence motif was identical to that proposed for the surface layer protein of " Candidatus Kuenenia stuttgartiensis". The heavily glycosylated protein forms a large fraction of the EPS and was also located by lectin staining. Therefore, we hypothesize an important role of glycoproteins in the structuring of anammox granules, comparable to the importance of glycans in the extracellular matrix of multicellular organisms. Furthermore, different glycoconjugates may have distinct roles in the matrix of granular sludge, which requires more in-depth characterization of different glycoconjugates in future EPS studies.
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Affiliation(s)
- Marissa Boleij
- Department
of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - Martin Pabst
- Department
of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - Thomas R. Neu
- Department
of River Ecology, Helmholtz Centre for Environmental
Research − UFZ, Brueckstrasse 3A, 39114 Magdeburg, Germany
| | - Mark C. M. van Loosdrecht
- Department
of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - Yuemei Lin
- Department
of Biotechnology, Delft University of Technology, van der Maasweg 9, 2629 HZ, Delft, The Netherlands
- E-mail:
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30
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Polat FR, Karaboğa İ. Immunohistochemical examination of anti-inflammatory and anti-apoptotic effects of hesperetin on trinitrobenzene sulfonic acid induced colitis in rats. Biotech Histochem 2018; 94:151-158. [DOI: 10.1080/10520295.2018.1530454] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- F. R. Polat
- Faculty of Medicine, Department of General Surgery, Namık Kemal University, Tekirdag, Turkey
| | - İ. Karaboğa
- School of Health, Department of Emergency and Disaster Management, Namık Kemal University, Tekirdag, Turkey
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31
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Fernandez N, Wrzosek L, Radziwill-Bienkowska JM, Ringot-Destrez B, Duviau MP, Noordine ML, Laroute V, Robert V, Cherbuy C, Daveran-Mingot ML, Cocaign-Bousquet M, Léonard R, Robbe-Masselot C, Rul F, Ogier-Denis E, Thomas M, Mercier-Bonin M. Characterization of Mucus-Related Properties of Streptococcus thermophilus: From Adhesion to Induction. Front Physiol 2018; 9:980. [PMID: 30087622 PMCID: PMC6067005 DOI: 10.3389/fphys.2018.00980] [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: 02/13/2018] [Accepted: 07/03/2018] [Indexed: 12/21/2022] Open
Abstract
Mucus is a major component of the intestinal barrier involved both in the protection of the host and the fitness of commensals of the gut. Streptococcus thermophilus is consumed world-wide in fermented dairy products and is also recognized as a probiotic, as its consumption is associated with improved lactose digestion. We determined the overall effect of S. thermophilus on the mucus by evaluating its ability to adhere, degrade, modify, or induce the production of mucus and/or mucins. Adhesion was analyzed in vitro using two types of mucins (from pig or human biopsies) and mucus-producing intestinal HT29-MTX cells. The induction of mucus was characterized in two different rodent models, in which S. thermophilus is the unique bacterial species in the digestive tract or transited as a sub-dominant bacterium through a complex microbiota. S. thermophilus LMD-9 and LMG18311 strains did not grow in sugars used to form mucins as the sole carbon source and displayed weak binding to mucus/mucins relative to the highly adhesive TIL448 Lactococcus lactis. The presence of S. thermophilus as the unique bacteria in the digestive tract of gnotobiotic rats led to accumulation of lactate and increased the number of Alcian-Blue positive goblet cells and the amount of the mucus-inducer KLF4 transcription factor. Lactate significantly increased KLF4 protein levels in HT29-MTX cells. Introduction of S. thermophilusvia transit as a sub-dominant bacterium (103 CFU/g feces) in a complex endogenous microbiota resulted in a slight increase in lactate levels in the digestive tract, no induction of overall mucus production, and moderate induction of sulfated mucin production. We thus show that although S. thermophilus is a poor mucus-adhesive bacterium, it can promote mucus pathway at least in part by producing lactate in the digestive tract.
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Affiliation(s)
- Neïké Fernandez
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Laura Wrzosek
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | | | - Belinda Ringot-Destrez
- Université de Lille, Lille, France.,USTL, UGSF, IFR 147, CNRS, Villeneuve-d'Ascq, France.,UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle, Villeneuve-d'Ascq, France
| | | | - Marie-Louise Noordine
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Valérie Laroute
- LISBP, CNRS, INRA, INSA, Université de Toulouse, Toulouse, France
| | - Véronique Robert
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Claire Cherbuy
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | | | | | - Renaud Léonard
- Université de Lille, Lille, France.,USTL, UGSF, IFR 147, CNRS, Villeneuve-d'Ascq, France.,UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle, Villeneuve-d'Ascq, France
| | - Catherine Robbe-Masselot
- Université de Lille, Lille, France.,USTL, UGSF, IFR 147, CNRS, Villeneuve-d'Ascq, France.,UMR 8576, Unité de Glycobiologie Structurale et Fonctionnelle, Villeneuve-d'Ascq, France
| | - Françoise Rul
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Eric Ogier-Denis
- INSERM, Research Centre of Inflammation BP 416, Paris, France.,University Paris Diderot, Sorbonne Paris Cité, Paris, France.,Laboratory of Excellence Labex INFLAMEX, Université Sorbonne Paris Cité, Paris, France
| | - Muriel Thomas
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Muriel Mercier-Bonin
- Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
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32
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Low S, Hirakawa J, Hoshino H, Uchimura K, Kawashima H, Kobayashi M. Role of MAdCAM-1-Expressing High Endothelial Venule-Like Vessels in Colitis Induced in Mice Lacking Sulfotransferases Catalyzing L-Selectin Ligand Biosynthesis. J Histochem Cytochem 2018; 66:415-425. [PMID: 29350564 PMCID: PMC5977439 DOI: 10.1369/0022155417753363] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 12/18/2017] [Indexed: 01/28/2023] Open
Abstract
Ulcerative colitis (UC) is a chronic inflammatory disease histologically characterized by diffuse mononuclear cell infiltrates in colonic mucosa. These inflammatory cells are considered to be recruited via high endothelial venule (HEV)-like vessels displaying mucosal addressin cell adhesion molecule 1 (MAdCAM-1), the ligand for α4β7 integrin, and/or peripheral lymph node addressin (PNAd), an L-selectin ligand. 6- O-sulfation of N-acetylglucosamine in the carbohydrate moiety of PNAd is catalyzed exclusively by N-acetylglucosamine-6- O-sulfotransferase 1 (GlcNAc6ST-1) and GlcNAc6ST-2. To determine the role of 6- O-sulfation of N-acetylglucosamine on HEV-like vessels in UC, we used a chronic dextran sulfate sodium-induced colitis model using mice deficient in both GlcNAc6ST-1 and GlcNAc6ST-2. We found that more inflammatory cells, with expression of tumor necrosis factor α, were infiltrated in double knockout mouse colitis compared with that in wild-type mice. Moreover, the number of MAdCAM-1-positive vessels was increased in double knockout mouse colitis, and these vessels were bound by E-selectin•IgM chimeras that bind to unsulfated sialyl Lewis X (sLeX). These findings suggest that interactions between MAdCAM-1 and α4β7 integrin and/or unsulfated sLeX and L-selectin may become a dominant mechanism for inflammatory cell recruitment in the absence of 6-sulfo sLeX and contribute to more severe colitis phenotypes seen in double knockout mice.
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Affiliation(s)
- Shulin Low
- Department of Tumor Pathology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Jotaro Hirakawa
- Department of Biochemistry, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo, Japan
- Laboratory of Microbiology and Molecular Genetics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Hitomi Hoshino
- Department of Tumor Pathology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Kenji Uchimura
- Department of Biochemistry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroto Kawashima
- Department of Biochemistry, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo, Japan
- Laboratory of Microbiology and Molecular Genetics, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Motohiro Kobayashi
- Department of Tumor Pathology, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
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33
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Ren C, Dokter‐Fokkens J, Figueroa Lozano S, Zhang Q, de Haan BJ, Zhang H, Faas MM, de Vos P. Lactic Acid Bacteria May Impact Intestinal Barrier Function by Modulating Goblet Cells. Mol Nutr Food Res 2018; 62:e1700572. [PMID: 29333697 PMCID: PMC5900975 DOI: 10.1002/mnfr.201700572] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 12/11/2017] [Indexed: 12/19/2022]
Abstract
SCOPE Lactic acid bacteria (LAB) are recognized to promote gastrointestinal health by mechanisms that are not fully understood. LABs might modulate the mucus and thereby enhance intestinal barrier function. Herein, we investigate effects of different LAB strains and species on goblet cell genes involved in mucus synthesis. METHODS AND RESULTS Gene expression profiles of goblet-cell-associated products (mucin MUC2, trefoil factor 3, resistin-like molecule β, carbohydrate sulfotransferase 5, and galactose-3-O-sulfotransferase 2) induced by LAB or their derived conditioned medium in human goblet cell line LS174T are studied. Effects of LAB on gene transcription are assessed with or without exposure to TNF-α, IL-13, or the mucus damaging agent tunicamycin. LAB do impact the related genes in a species- and strain-specific fashion and their effects are different in the presence of the cytokines and tunicamycin. Bioactive factors secreted by some strains are also found to regulate goblet cell-related genes. CONCLUSION Our findings provide novel insights in differences in modulatory efficacy on mucus genes between LAB species and strains. This study further unravels direct interactions between LAB and intestinal goblet cells, and highlights the importance of rationally selecting appropriate LAB candidates to achieve specific benefits in the gut.
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Affiliation(s)
- Chengcheng Ren
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center GroningenHanzeplein 1The Netherlands
- School of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Jelleke Dokter‐Fokkens
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center GroningenHanzeplein 1The Netherlands
| | - Susana Figueroa Lozano
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center GroningenHanzeplein 1The Netherlands
| | - Qiuxiang Zhang
- School of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Bart J. de Haan
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center GroningenHanzeplein 1The Netherlands
| | - Hao Zhang
- School of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Marijke M. Faas
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center GroningenHanzeplein 1The Netherlands
| | - Paul de Vos
- ImmunoendocrinologyDivision of Medical BiologyDepartment of Pathology and Medical BiologyUniversity of Groningen and University Medical Center GroningenHanzeplein 1The Netherlands
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Small Intestinal Absorption of Methylsulfonylmethane (MSM) and Accumulation of the Sulfur Moiety in Selected Tissues of Mice. Nutrients 2017; 10:nu10010019. [PMID: 29295596 PMCID: PMC5793247 DOI: 10.3390/nu10010019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/05/2017] [Accepted: 12/20/2017] [Indexed: 12/14/2022] Open
Abstract
The principal dietary sources of sulfur, the amino acids methionine and cysteine, may not always be consumed in adequate amounts to meet sulfur requirements. The naturally occurring organosulfur compound, methylsulfonylmethane (MSM), is available as a dietary supplement and has been associated with multiple health benefits. Absorption of MSM by the small intestine and accumulation of the associated sulfur moiety in selected tissues with chronic (8 days) administration were evaluated using juvenile male mice. Intestinal absorption was not saturated at 50 mmol, appeared passive and carrier-independent, with a high capacity (at least 2 g/d-mouse). The 35S associated with MSM did not increase in serum or tissue homogenates between days 2 and 8, indicating a stable equilibrium between intake and elimination was established. In contrast, proteins isolated from the preparations using gel electrophoresis revealed increasing incorporation of 35S in the protein fraction of serum, cellular elements of blood, liver, and small intestine but not skeletal muscle. The potential contributions of protein synthesis using labeled sulfur amino acids synthesized by the gut bacteria and posttranslational sulfation of proteins by incorporation of the labeled sulfate of MSM in 3'-phosphoadenosine 5'-phosphosulfate (PAPS) and subsequent transfer by sulfotransferases are discussed.
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Volf J, Polansky O, Sekelova Z, Velge P, Schouler C, Kaspers B, Rychlik I. Gene expression in the chicken caecum is dependent on microbiota composition. Vet Res 2017; 48:85. [PMID: 29202873 PMCID: PMC5716255 DOI: 10.1186/s13567-017-0493-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 11/23/2017] [Indexed: 01/09/2023] Open
Abstract
Gut microbiota is of considerable importance for each host. Despite this, germ-free animals can be obtained and raised to sexual maturity and consequences of the presence or absence of gut microbiota on gene expression of the host remain uncharacterised. In this study, we performed an unbiased study of protein expression in the caecum of germ-free and colonised chickens. The major difference between these two groups was in the expression of immunoglobulins which were essentially absent in the germ-free chickens. Microbiota also caused a minor decrease in the expression of focal adhesion and extracellular matrix proteins and an increase in the expression of argininosuccinate synthase ASS1, redox potential sensing, fermentative metabolic processes and detoxification systems represented by sulfotransferases SULT1C3 or SULT1E1. Since we also analysed expression in the caecum of E. coli Nissle and E. faecium DSM7134 mono-associated chickens, we concluded that at least immunoglobulin expression and expression of cystathionine synthase (CBS) was dependent on microbiota composition with E. coli Nissle stimulating more immunoglobulin and PIGR expression and E. faecium DSM7134 stimulating more CBS expression. Gut microbiota and its composition therefore affected protein expression in the chicken caecum though except for immunoglobulin production, the remaining differences were unexpectedly low.
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Affiliation(s)
- Jiri Volf
- Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Ondrej Polansky
- Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Zuzana Sekelova
- Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic
| | - Philippe Velge
- ISP, INRA, Université François Rabelais de Tours, 37380, Nouzilly, France
| | - Catherine Schouler
- ISP, INRA, Université François Rabelais de Tours, 37380, Nouzilly, France
| | - Bernd Kaspers
- Department for Veterinary Sciences, Institute for Animal Physiology, Faculty of Veterinary Medicine, Ludwig-Maximilians-Universität München, Veterinastr. 13, 80539, Munich, Germany
| | - Ivan Rychlik
- Veterinary Research Institute, Hudcova 70, 621 00, Brno, Czech Republic.
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Al-Saedi F, Vaz DP, Stones DH, Krachler AM. 3-Sulfogalactosyl-dependent adhesion of Escherichia coli HS multivalent adhesion molecule is attenuated by sulfatase activity. J Biol Chem 2017; 292:19792-19803. [PMID: 28982977 PMCID: PMC5712619 DOI: 10.1074/jbc.m117.817908] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 10/02/2017] [Indexed: 02/06/2023] Open
Abstract
Bacterial adhesion to host receptors is an early and essential step in bacterial colonization, and the nature of adhesin–receptor interactions determines bacterial localization and thus the outcome of these interactions. Here, we determined the host receptors for the multivalent adhesion molecule (MAM) from the gut commensal Escherichia coli HS (MAMHS), which contains an array of seven mammalian cell entry domains. The MAMHS adhesin interacted with a range of host receptors, through recognition of a shared 3-O-sulfogalactosyl moiety. This functional group is also found in mucin, a component of the intestinal mucus layer and thus one of the prime adherence targets for commensal E. coli. Mucin gels impeded the motility of E. coli by acting as a physical barrier, and the barrier effect was enhanced by specific interactions between mucin and MAMHS in a sulfation-dependent manner. Desulfation of mucin by pure sulfatase or the sulfatase-producing commensal Bacteroides thetaiotaomicron decreased binding of E. coli to mucin and increased the attachment of bacteria to the epithelial surface via interactions with surface-localized sulfated lipid and protein receptors. Together, our results demonstrate that the E. coli adhesin MAMHS facilitates retention of a gut commensal by attachment to mucin. They further suggest that the amount of sulfatase secreted by mucin-foraging bacteria such as B. thetaiotaomicron, inhabiting the same niche, may affect the capacity of the mucus barrier to retain commensal E. coli.
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Affiliation(s)
- Fitua Al-Saedi
- From the Institute of Microbiology and Infection, School of Biosciences, University of Birmingham, Edgbaston B15 2TT Birmingham, United Kingdom and
| | - Diana Pereira Vaz
- From the Institute of Microbiology and Infection, School of Biosciences, University of Birmingham, Edgbaston B15 2TT Birmingham, United Kingdom and.,the Department of Microbiology and Molecular Genetics, University of Texas McGovern Medical School at Houston, Houston, Texas 77030
| | - Daniel H Stones
- From the Institute of Microbiology and Infection, School of Biosciences, University of Birmingham, Edgbaston B15 2TT Birmingham, United Kingdom and
| | - Anne Marie Krachler
- the Department of Microbiology and Molecular Genetics, University of Texas McGovern Medical School at Houston, Houston, Texas 77030
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Ravcheev DA, Thiele I. Comparative Genomic Analysis of the Human Gut Microbiome Reveals a Broad Distribution of Metabolic Pathways for the Degradation of Host-Synthetized Mucin Glycans and Utilization of Mucin-Derived Monosaccharides. Front Genet 2017; 8:111. [PMID: 28912798 PMCID: PMC5583593 DOI: 10.3389/fgene.2017.00111] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 08/11/2017] [Indexed: 12/27/2022] Open
Abstract
The colonic mucus layer is a dynamic and complex structure formed by secreted and transmembrane mucins, which are high-molecular-weight and heavily glycosylated proteins. Colonic mucus consists of a loose outer layer and a dense epithelium-attached layer. The outer layer is inhabited by various representatives of the human gut microbiota (HGM). Glycans of the colonic mucus can be used by the HGM as a source of carbon and energy when dietary fibers are not sufficiently available. Both commensals and pathogens can utilize mucin glycans. Commensals are mostly involved in the cleavage of glycans, while pathogens mostly utilize monosaccharides released by commensals. This HGM-derived degradation of the mucus layer increases pathogen susceptibility and causes many other health disorders. Here, we analyzed 397 individual HGM genomes to identify pathways for the cleavage of host-synthetized mucin glycans to monosaccharides as well as for the catabolism of the derived monosaccharides. Our key results are as follows: (i) Genes for the cleavage of mucin glycans were found in 86% of the analyzed genomes, which significantly higher than a previous estimation. (ii) Genes for the catabolism of derived monosaccharides were found in 89% of the analyzed genomes. (iii) Comparative genomic analysis identified four alternative forms of the monosaccharide-catabolizing enzymes and four alternative forms of monosaccharide transporters. (iv) Eighty-five percent of the analyzed genomes may be involved in potential feeding pathways for the monosaccharides derived from cleaved mucin glycans. (v) The analyzed genomes demonstrated different abilities to degrade known mucin glycans. Generally, the ability to degrade at least one type of mucin glycan was predicted for 81% of the analyzed genomes. (vi) Eighty-two percent of the analyzed genomes can form mutualistic pairs that are able to degrade mucin glycans and are not degradable by any of the paired organisms alone. Taken together, these findings provide further insight into the inter-microbial communications of the HGM as well as into host-HGM interactions.
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Affiliation(s)
- Dmitry A Ravcheev
- Luxembourg Centre for Systems Biomedicine, University of LuxembourgEsch-sur-Alzette, Luxembourg
| | - Ines Thiele
- Luxembourg Centre for Systems Biomedicine, University of LuxembourgEsch-sur-Alzette, Luxembourg
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Scillitani G, Mentino D, Mastrodonato M. Glycopattern analysis of acidic secretion in the intestine of the red-eared slender turtle; Trachemys scripta elegans (Testudines: Emydidae). Tissue Cell 2017; 49:573-581. [PMID: 28756875 DOI: 10.1016/j.tice.2017.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 07/15/2017] [Accepted: 07/17/2017] [Indexed: 12/27/2022]
Abstract
The secretion of the goblet cells in the intestine of Trachemys scripta elegans was studied in situ by histochemical methods to analyze the diversity of sugar chains, with particular regard to the acidic glycans. Conventional histochemical stains (Periodic acid-Schiff, Alcian Blue pH 2.5, High Iron Diamine) and binding with ten FITC-labelled lectins combined with chemical and enzymatic pre-treatments were used to characterize the oligosaccharidic chains. The intestine can be divided into three regions, i.e. a duodenum, a small intestine and a large intestine. Goblet cells were observed in all the three tracts and presented an acidic secretion. WGA, LFA, PNA and SBA binding was observed only after desulfation. Glycans secreted by the three tracts consist mainly of sulfosialomucins with 1,2-linked fucose, mannosylated, glucosaminylated and subterminal galactosyl/galactosaminylated residuals. Differences among tracts are quantitative rather than qualitative, with sulfated, galactosaminylated and glycosaminylated residuals increasing from duodenum to large intestine, and galactosylated and fucosylated residuals showing an opposite trend. Variation is observed also between apices and bases of villi in both duodenum and small intestine, where sulphation decreases from the base to the apex and glycosylation shows an opposite trend. Functional implication of these findings is discussed in a comparative context.
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Affiliation(s)
- Giovanni Scillitani
- Department of Biology, Section of Animal and Environmental Biology, Laboratory of Histology and Comparative Anatomy, University of Bari Aldo Moro, via Orabona 4/a, I-0125 Bari, Italy.
| | - Donatella Mentino
- Department of Biology, Section of Animal and Environmental Biology, Laboratory of Histology and Comparative Anatomy, University of Bari Aldo Moro, via Orabona 4/a, I-0125 Bari, Italy
| | - Maria Mastrodonato
- Department of Biology, Section of Animal and Environmental Biology, Laboratory of Histology and Comparative Anatomy, University of Bari Aldo Moro, via Orabona 4/a, I-0125 Bari, Italy
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Gabrielli MG, Tomassoni D. Starch-enriched diet modulates the glucidic profile in the rat colonic mucosa. Eur J Nutr 2017; 57:1109-1121. [PMID: 28393287 DOI: 10.1007/s00394-017-1393-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 02/02/2017] [Indexed: 01/10/2023]
Abstract
PURPOSE The protective function of the intestinal mucosa largely depends on carbohydrate moieties that as a part of glycoproteins and glycolipids form the epithelial glycocalyx or are secreted as mucins. Modifications of their expression can be induced by an altered intestinal microenvironment and have been associated with inflammatory disorders and colorectal cancer. Given the influence of dietary factors on the gut ecosystem, here we have investigated whether a long term feeding on a starch-rich diet can modulate the glucidic profile in the colonic mucosa of rats. METHODS Animals were divided into two groups and maintained for 9 months at different diets: one group was fed a standard diet, the second was fed a starch-enriched diet. Samples of colonic mucosa, divided in proximal and distal portions, were processed for microscopic analysis. Conventional stainings and lectin histochemistry were applied to identify acidic glycoconjugates and specific sugar residues in oligosaccharide chains, respectively. Some lectins were applied on adjacent sections after sialidase/fucosidase digestion, deacetylation, and oxidation to characterize either terminal dimers or sialic acid acetylation. RESULTS An increase in sulfomucins was found to be associated with the starch-enriched diet that affected also the expression of several sugar residues as well as fucosylated and sialylated sequences in both proximal and distal colon. CONCLUSIONS Although the mechanisms leading to such a modulation are at present unknown, either an altered intestinal microbiota or a dysregulation of glycosylation patterns might be responsible for the types and distribution of changes in the glucidic profile here observed.
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Affiliation(s)
- Maria Gabriella Gabrielli
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, I, Camerino, 62032, Macerata, Italy.
| | - Daniele Tomassoni
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile III da Varano, I, Camerino, 62032, Macerata, Italy
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Hasnain SZ, Dawson PA, Lourie R, Hutson P, Tong H, Grencis RK, McGuckin MA, Thornton DJ. Immune-driven alterations in mucin sulphation is an important mediator of Trichuris muris helminth expulsion. PLoS Pathog 2017; 13:e1006218. [PMID: 28192541 PMCID: PMC5325613 DOI: 10.1371/journal.ppat.1006218] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 02/24/2017] [Accepted: 02/03/2017] [Indexed: 12/21/2022] Open
Abstract
Mucins are heavily glycosylated proteins that give mucus its gel-like properties. Moreover, the glycans decorating the mucin protein core can alter the protective properties of the mucus barrier. To investigate whether these alterations could be parasite-induced we utilized the Trichuris muris (T. muris) infection model, using different infection doses and strains of mice that are resistant (high dose infection in BALB/c and C57BL6 mice) or susceptible (high dose infection in AKR and low dose infection in BALB/c mice) to chronic infection by T. muris. During chronicity, within the immediate vicinity of the T. muris helminth the goblet cell thecae contained mainly sialylated mucins. In contrast, the goblet cells within the epithelial crypts in the resistant models contained mainly sulphated mucins. Maintained mucin sulphation was promoted by TH2-immune responses, in particular IL-13, and contributed to the protective properties of the mucus layer, making it less vulnerable to degradation by T. muris excretory secretory products. Mucin sulphation was markedly reduced in the caecal goblet cells in the sulphate anion transporter-1 (Sat-1) deficient mice. We found that Sat-1 deficient mice were susceptible to chronic infection despite a strong TH2-immune response. Lower sulphation levels lead to decreased efficiency of establishment of T. muris infection, independent of egg hatching. This study highlights the complex process by which immune-regulated alterations in mucin glycosylation occur following T. muris infection, which contributes to clearance of parasitic infection. Approximately 2 billion people are infected with worms every year, causing physical, nutritional and cognitive impairment particularly in children. Mucins are large sugar-coated (glycosylated) proteins that form the intestinal mucus layer. This mucus layer protects our ‘insides’ from external insults and plays an important role during worm infection. We discovered that there is a difference in the glycosylation of mucins in people infected with worms compared to uninfected individuals. Therefore, using different mouse models we investigated the role of glycosylation, and in particular sulphation of mucins in infection. We found that mucin glycosylation is controlled by the immune response and increased sulphation correlated with the expulsion of the worm from the host. Highly sulphated mucins were protected from degradation by the worm. Moreover, mice lacking a sulphate transporter had significantly lower sulphation levels on mucins, which resulted in a reduction in the establishment of the worms and chronic infection.
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Affiliation(s)
- Sumaira Z. Hasnain
- Inflammatory Disease Biology and Therapeutics Group, Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, Australia
- * E-mail:
| | - Paul A. Dawson
- Inflammatory Disease Biology and Therapeutics Group, Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Rohan Lourie
- Inflammatory Disease Biology and Therapeutics Group, Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, Australia
- Mater Pathology Services, Mater Hospitals, South Brisbane, Queensland, Australia
| | - Peter Hutson
- Mater Pathology Services, Mater Hospitals, South Brisbane, Queensland, Australia
| | - Hui Tong
- Inflammatory Disease Biology and Therapeutics Group, Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - Richard K. Grencis
- Manchester Immunology Group Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom
| | - Michael A. McGuckin
- Inflammatory Disease Biology and Therapeutics Group, Mater Research Institute - The University of Queensland, Translational Research Institute, Brisbane, Australia
| | - David J. Thornton
- Manchester Immunology Group Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester, United Kingdom
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Terova G, Díaz N, Rimoldi S, Ceccotti C, Gliozheni E, Piferrer F. Effects of Sodium Butyrate Treatment on Histone Modifications and the Expression of Genes Related to Epigenetic Regulatory Mechanisms and Immune Response in European Sea Bass (Dicentrarchus Labrax) Fed a Plant-Based Diet. PLoS One 2016; 11:e0160332. [PMID: 27471849 PMCID: PMC4966935 DOI: 10.1371/journal.pone.0160332] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 07/18/2016] [Indexed: 01/21/2023] Open
Abstract
Bacteria that inhabit the epithelium of the animals' digestive tract provide the essential biochemical pathways for fermenting otherwise indigestible dietary fibers, leading to the production of short-chain fatty acids (SCFAs). Of the major SCFAs, butyrate has received particular attention due to its numerous positive effects on the health of the intestinal tract and peripheral tissues. The mechanisms of action of this four-carbon chain organic acid are different; many of these are related to its potent regulatory effect on gene expression since butyrate is a histone deacetylase inhibitor that play a predominant role in the epigenetic regulation of gene expression and cell function. In the present work, we investigated in the European sea bass (Dicentrarchus labrax) the effects of butyrate used as a feed additive on fish epigenetics as well as its regulatory role in mucosal protection and immune homeostasis through impact on gene expression. Seven target genes related to inflammatory response and reinforcement of the epithelial defense barrier [tnfα (tumor necrosis factor alpha) il1β, (interleukin 1beta), il-6, il-8, il-10, and muc2 (mucin 2)] and five target genes related to epigenetic modifications [dicer1(double-stranded RNA-specific endoribonuclease), ehmt2 (euchromatic histone-lysine-N-methyltransferase 2), pcgf2 (polycomb group ring finger 2), hdac11 (histone deacetylase-11), and jarid2a (jumonji)] were analyzed in fish intestine and liver. We also investigated the effect of dietary butyrate supplementation on histone acetylation, by performing an immunoblotting analysis on liver core histone extracts. Results of the eight-week-long feeding trial showed no significant differences in weight gain or SGR (specific growth rate) of sea bass that received 0.2% sodium butyrate supplementation in the diet in comparison to control fish that received a diet without Na-butyrate. Dietary butyrate led to a twofold increase in the acetylation level of histone H4 at lysine 8, but showed no effect on the histone H3 at Lys9. Moreover, two different isoforms of histone H3 that might correspond to the H3.1 and H3.2 isoforms previously found in terrestrial animals were separated on the immunoblots. The expression of four (il1 β, il8, irf1, and tnfα) out of seven analyzed genes related to mucosal protection and inflammatory response was significantly different between the two analyzed tissues but only il10 showed differences in expression due to the interaction between tissue and butyrate treatment. In addition, butyrate caused significant changes in vivo in the expression of genes related to epigenetic regulatory mechanisms such as hdac11, ehmt2, and dicer1. Statistical analysis by two-way ANOVA for these genes showed not only significant differences due to the butyrate treatment, but also due to the interaction between tissue and treatment.
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Affiliation(s)
- Genciana Terova
- Department of Biotechnology and Life Sciences, University of Insubria, Via J.H.Dunant, 3, 21100, Varese, Italy
- Inter-University Centre for Research in Protein Biotechnologies "The Protein Factory"- Polytechnic University of Milan and University of Insubria, Varese, Italy
| | - Noelia Díaz
- Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Passeig Marítim, 37–49, 08003, Barcelona, Spain
| | - Simona Rimoldi
- Department of Biotechnology and Life Sciences, University of Insubria, Via J.H.Dunant, 3, 21100, Varese, Italy
| | - Chiara Ceccotti
- Department of Biotechnology and Life Sciences, University of Insubria, Via J.H.Dunant, 3, 21100, Varese, Italy
| | - Emi Gliozheni
- Department of Biotechnology and Life Sciences, University of Insubria, Via J.H.Dunant, 3, 21100, Varese, Italy
| | - Francesc Piferrer
- Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Passeig Marítim, 37–49, 08003, Barcelona, Spain
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Katayama T. Host-derived glycans serve as selected nutrients for the gut microbe: human milk oligosaccharides and bifidobacteria†. Biosci Biotechnol Biochem 2016; 80:621-32. [DOI: 10.1080/09168451.2015.1132153] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Abstract
Lactation is a common feeding strategy of eutherian mammals, but its functions go beyond feeding the neonates. Ever since Tissier isolated bifidobacteria from the stool of breast-fed infants, human milk has been postulated to contain compounds that selectively stimulate the growth of bifidobacteria in intestines. However, until relatively recently, there have been no reports to link human milk compound(s) with bifidobacterial physiology. Over the past decade, successive studies have demonstrated that infant-gut-associated bifidobacteria are equipped with genetic and enzymatic toolsets dedicated to assimilation of host-derived glycans, especially human milk oligosaccharides (HMOs). Among gut microbes, the presence of enzymes required for degrading HMOs with type-1 chains is essentially limited to infant-gut-associated bifidobacteria, suggesting HMOs serve as selected nutrients for the bacteria. In this study, I shortly discuss the research on bifidobacteria and HMOs from a historical perspective and summarize the roles of bifidobacterial enzymes in the assimilation of HMOs with type-1 chains. Based on this overview, I suggest the co-evolution between bifidobacteria and human beings mediated by HMOs.
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Affiliation(s)
- Takane Katayama
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Faculty of Bioresources and Environmental Sciences, Ishikawa Prefectural University, Nonoichi, Japan
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Aoki R, Tsuchida S, Arai Y, Ohno K, Nishijima T, Mawatari T, Mikami Y, Ushida K. Effect of Bifidobacterium animalis subsp. lactis GCL2505 on the physiological function of intestine in a rat model. Food Sci Nutr 2016; 4:782-790. [PMID: 27826427 PMCID: PMC5090641 DOI: 10.1002/fsn3.344] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 12/25/2015] [Accepted: 01/11/2016] [Indexed: 12/13/2022] Open
Abstract
Bifidobacterium animalis ssp. lactis GCL2505 has been shown to proliferate in the human intestine. The intestinal dynamics and physiological effects of GCL2505 as well as the mechanism underlying proliferation in the gut were investigated. GCL2505 showed markedly higher resistance to free bile acids (cholic and deoxycholic acids) than other bifidobacterial species. The intestinal dynamics of GCL2505 and B. longum ssp. longum JCM1217T was compared. The level of B. animalis ssp. lactis in the GCL2505‐administered group was remarkably higher than that of B. longum in the JCM1217T‐administered group. The distribution of B. animalis ssp. lactis through the intestine of the GCL2505‐administered group revealed that GCL2505 proliferated in the cecum. The physiological effects of GCL2505 and JCM 1217T were investigated. The cecal IgA level in the GCL2505‐administered group was significantly higher than that in the nontreated control group. In contrast, the JCM 1217T‐administered group did not manifest any change in the cecal IgA level. Mucin excretion in the GCL2505‐administered group was significantly higher than that in the JCM 1217T‐administered group. The thickness of the sulfomucin layer of the colon in the GCL2505‐administered group tended to be higher than that in the JCM 1217T‐administered group. In a loperamide‐induced constipation model, fecal excretion in the GCL2505‐administered group was significantly increased compared with that in the loperamide‐treated control group. Short‐chain fatty acid concentration in the GCL2505‐administered group was significantly higher than that in the loperamide‐treated control group. These results indicate that the level of proliferation of probiotics in the intestine correlates with the magnitude of host physiological responses, such as IgA production and mucin secretion, which possibly affect gastrointestinal functions such as bowel movement to counteract constipation. GCL2505 exhibits high tolerance to secondary bile acids, which partially explains its higher rate of proliferation in the large intestine.
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Affiliation(s)
- Ryo Aoki
- Instutute of Health Sciences Ezaki Glico Co. Ltd. Osaka Utajima Japan; Glico Dairy Products Co. Ltd. Akishima Tokyo Japan
| | - Sayaka Tsuchida
- Graduate School of Life and Environmental Science Kyoto Prefectural University Shimogamo Kyoto 606-8522 Japan
| | - Yuri Arai
- Graduate School of Life and Environmental Science Kyoto Prefectural University Shimogamo Kyoto 606-8522 Japan
| | - Konatsu Ohno
- Graduate School of Life and Environmental Science Kyoto Prefectural University Shimogamo Kyoto 606-8522 Japan
| | | | | | - Yumiko Mikami
- Instutute of Health Sciences Ezaki Glico Co. Ltd. Osaka Utajima Japan
| | - Kazunari Ushida
- Graduate School of Life and Environmental Science Kyoto Prefectural University Shimogamo Kyoto 606-8522 Japan
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Tsuboi K, Nishitani M, Takakura A, Imai Y, Komatsu M, Kawashima H. Autophagy Protects against Colitis by the Maintenance of Normal Gut Microflora and Secretion of Mucus. J Biol Chem 2015; 290:20511-26. [PMID: 26149685 DOI: 10.1074/jbc.m114.632257] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Indexed: 12/27/2022] Open
Abstract
Genome-wide association studies of inflammatory bowel diseases identified susceptible loci containing an autophagy-related gene. However, the role of autophagy in the colon, a major affected area in inflammatory bowel diseases, is not clear. Here, we show that colonic epithelial cell-specific autophagy-related gene 7 (Atg7) conditional knock-out (cKO) mice showed exacerbation of experimental colitis with more abundant bacterial invasion into the colonic epithelium. Quantitative PCR analysis revealed that cKO mice had abnormal microflora with an increase of some genera. Consistently, expression of antimicrobial or antiparasitic peptides such as angiogenin-4, Relmβ, intelectin-1, and intelectin-2 as well as that of their inducer cytokines was significantly reduced in the cKO mice. Furthermore, secretion of colonic mucins that function as a mucosal barrier against bacterial invasion was also significantly diminished in cKO mice. Taken together, our results indicate that autophagy in colonic epithelial cells protects against colitis by the maintenance of normal gut microflora and secretion of mucus.
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Affiliation(s)
- Koichiro Tsuboi
- From the Department of Biochemistry, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo 142-8501, the Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, and
| | - Mayo Nishitani
- the Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, and
| | - Atsushi Takakura
- the Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, and
| | - Yasuyuki Imai
- the Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, and
| | - Masaaki Komatsu
- the Department of Biochemistry, School of Medicine, Niigata University, Niigata 951-8510, Japan
| | - Hiroto Kawashima
- From the Department of Biochemistry, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Tokyo 142-8501, the Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka 422-8526, and
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Kawashima R, Kawakami F, Maekawa T, Yamamoto H, Koizumi W, Ichikawa T. Elemental diet moderates 5-fluorouracil-induced gastrointestinal mucositis through mucus barrier alteration. Cancer Chemother Pharmacol 2015; 76:269-77. [PMID: 26048344 DOI: 10.1007/s00280-015-2790-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 05/27/2015] [Indexed: 01/10/2023]
Abstract
PURPOSE There are reports that elemental diet (ED) ameliorates oral mucositis caused by antineoplastic chemotherapy. Although this effectiveness may be partly due to high nutrient absorption, the effects of chemotherapy on mucosal defense mechanisms remain unclear. We investigated the effects of oral supplementation with ED on mucin in 5-fluorouracil (5-FU)-induced intestinal mucositis. METHODS 5-FU was administered to rats orally once daily, and ED was supplied orally twice daily for 5 days. The severity of mucositis was assessed by length, dry tissue weight, and villus height of the intestinal tract. Using anti-mucin monoclonal antibody, we compared the immunoreactivity in the gastrointestinal (GI) tract and mucin content by histological and biochemical examinations. RESULTS Oral supplementation with ED reduced histological damage and loss of length, dry tissue weight, and villus height induced by 5-FU administration. ED markedly altered PGM34 antibody immunoreactivity and mucin contents in the small intestine of rats with 5-FU-induced mucositis. CONCLUSIONS ED may possibly be more effective for the prevention of antineoplastic chemotherapy-induced mucositis through the activation of GI mucus cells.
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Affiliation(s)
- Rei Kawashima
- Department of Regulation Biochemistry, Kitasato University Graduate School of Medical Sciences, 1-15-1 Kitasato, Minami-ku, Sagamahara, Kanagawa, 252-0373, Japan
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Bourven I, Bachellerie G, Costa G, Guibaud G. Evidence of glycoproteins and sulphated proteoglycan-like presence in extracellular polymeric substance from anaerobic granular sludge. ENVIRONMENTAL TECHNOLOGY 2015; 36:2428-2435. [PMID: 25812669 DOI: 10.1080/09593330.2015.1034186] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The protein fraction of extracellular polymeric substance (EPS) from two anaerobic granular sludge samples was characterized with sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and a far western blotting method. SDS-PAGE was used with various staining applications to obtain a protein (silver), glycoprotein [periodic acid-Shiff's (PAS)] or proteoglycan-like (Alcian blue at pH 2.5 (carboxylic group) or 1 (sulphated group)) fingerprint. The fingerprints of the EPS denatured protein from the two sludge samples differed. Some proteins are specific to Soluble (S) or Bound (B)-EPS (20-100 kDa). Denatured proteins with a polysaccharide moieties characterization are more present in B-EPS. Glycoproteins with α-d-mannosyl and/or α-d-glucosyl (90, 50, 40 kDa) were detected. Proteoglycan-like and sulphated proteoglycan-like substances are also detected, mainly in B-EPS. A 68 kDa sulphated proteoglycan-like substance contains two glucidic residue types: α-d-mannosyl and/or α-d-glucosyl and N-acetyl-β-d-glucosamine. Such heteroproteins are present around the membrane as well as the surface-layer from Archaea and from some bacteria. The glycoprotein and sulphated proteoglycan-like substance are assumed to contribute to anaerobic granule strength, thanks to their ability to perform interactions of various nature (ionic, hydrophobic, Ca(2+) as divalent cation bridging, etc.).
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Affiliation(s)
- Isabelle Bourven
- a Faculté des Sciences et Techniques , Université de Limoges, Groupement de Recherche Eau Sol Environnement (EA 4330) , 123 Av. Albert Thomas, 87060 Limoges , France
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Patel N, El Mouzan MI, Al-Mayouf SM, Adly N, Mohamed JY, Al Mofarreh MA, Ibrahim N, Xiong Y, Zhao Q, Al-Saleem KA, Alkuraya FS. Study of Mendelian forms of Crohn's disease in Saudi Arabia reveals novel risk loci and alleles. Gut 2014; 63:1831-2. [PMID: 25147203 DOI: 10.1136/gutjnl-2014-307859] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- Nisha Patel
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Mohammad I El Mouzan
- Department of Pediatrics, College of Medicine and King Khalid University Hospital, King Saud University, Riyadh, Saudi Arabia
| | - Sulaiman M Al-Mayouf
- Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Nouran Adly
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Jawahir Y Mohamed
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | | | - Niema Ibrahim
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Yong Xiong
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut, USA
| | - Qi Zhao
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut, USA
| | - Khalid A Al-Saleem
- Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Fowzan S Alkuraya
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
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Abstract
The intestinal epithelium is covered with mucus with the main structural building block being the densely O-glycosylated MUC2 mucin. The intestinal epithelium is exposed to ingested material, our digestive machinery, and large amounts of microorganisms. Mucus is the first line of defense and aids to limit exposure to all these threats to the epithelium. In the small intestine, mucus acts as a matrix, which contains antimicrobial products, such as defensins and immunoglobulin A that limit epithelial exposure to the luminal bacteria. In the colon, the stratified inner mucus layer acts as a physical barrier excluding bacteria from the epithelium. Bacterial penetration of this normally restricted zone is observed in many colitis models and also in patients with ulcerative colitis. Mucus defects that allow bacteria to reach the epithelium and to stimulate an immune system response can lead to the development of intestinal inflammation. The current state of our knowledge concerning the function of the mucus layers and the main mucin component, MUC2, in inflammatory bowel disease is described in this review.
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Fuell C, Kober OI, Hautefort I, Juge N. Mice deficient in intestinal γδ intraepithelial lymphocytes display an altered intestinal O-glycan profile compared with wild-type littermates. Glycobiology 2014; 25:42-54. [PMID: 25187161 DOI: 10.1093/glycob/cwu088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Intestinal γδ T-cell receptor-bearing intraepithelial lymphocytes (γδ IELs) play a multifaceted role in maintaining mucosal homeostasis. In order to investigate the relationship between O-glycosylation and inflammation, we carried out an in-depth mass spectrometric comparison of the intestinal O-glycosylation profile of mice lacking γδ IELs (TCRδ(-/-)) and of their wild-type (WT) littermates. A total of 69 nonsulfated and 59 sulfated compositional types of O-glycans were identified in the small intestine and colon of TCRδ(-/-) and WT mice. Our results demonstrated structural differences in intestinal glycosylation in TCRδ(-/-) mice compared with WT littermates. TCRδ(-/-) colons contained a lower proportion of core-2 structures and an increased proportion of core-1 structures whereas TCRδ(-/-) small intestines had a decreased percentage of core-3 structures. The glycan antennae in TCRδ(-/-) colon and small intestine showed altered structural diversity compared with WT mice. There were significant differences in the sialylated species between the TCRδ(-/-) and WT mice with the sialylated Tn antigen found exclusively in the TCRδ(-/-)small intestine, whereas the sulfation pattern remained mostly unchanged. These findings provide novel molecular insights underpinning the role of γδ IELs in maintaining gut homeostasis.
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Affiliation(s)
- Christine Fuell
- Gut Health and Food Safety Institute Strategic Programme, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
| | - Olivia I Kober
- Gut Health and Food Safety Institute Strategic Programme, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
| | - Isabelle Hautefort
- Gut Health and Food Safety Institute Strategic Programme, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
| | - Nathalie Juge
- Gut Health and Food Safety Institute Strategic Programme, Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK
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