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Rose EC, Simon JM, Gomez-Martinez I, Magness ST, Odle J, Blikslager AT, Ziegler AL. Single-cell transcriptomics predict novel potential regulators of acute epithelial restitution in the ischemia-injured intestine. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.28.601271. [PMID: 38979337 PMCID: PMC11230382 DOI: 10.1101/2024.06.28.601271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Intestinal ischemic injury damages the epithelial barrier predisposes patients to life-threatening sepsis unless that barrier is rapidly restored. There is an age-dependency of intestinal recovery in that neonates are the most susceptible to succumb to disease of the intestinal barrier versus older patients. We have developed a pig model that demonstrates age-dependent failure of intestinal barrier restitution in neonatal pigs which can be rescued by the direct application of juvenile pig mucosal tissue, but the mechanisms of rescue remain undefined. We hypothesized that by identifying a subpopulation of restituting enterocytes by their expression of cell migration transcriptional pathways, we can then predict novel upstream regulators of age-dependent restitution response programs. Superficial mucosal epithelial cells from recovering ischemic jejunum of juvenile pigs were processed for single cell RNA sequencing analysis, and predicted upstream regulators were assessed in a porcine intestinal epithelial cell line (IPEC-J2) and banked tissues. A subcluster of absorptive enterocytes expressed several cell migration pathways key to restitution. Differentially expressed genes in this subcluster predicted their upstream regulation included colony stimulating factor-1 (CSF-1). We validated age-dependent induction of CSF-1 by ischemia and documented that CSF-1 and CSF1R co-localized in ischemic juvenile, but not neonatal, wound-adjacent epithelial cells and in the restituted epithelium of juveniles and rescued (but not control) neonates. Further, the CSF1R inhibitor BLZ945 reduced restitution in scratch wounded IPEC-J2 cells. These studies validate an approach to inform potential novel therapeutic targets, such as CSF-1, to improve outcomes in neonates with intestinal injury in a unique pig model. NEW & NOTEWORTHY These studies validate an approach to identify and predict upstream regulation of restituting epithelium in a unique pig intestinal ischemic injury model. Identification of potential molecular mediators of restitution, such as CSF-1, will inform the development of targeted therapeutic interventions for medical management of patients with ischemia-mediated intestinal injury.
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Perez-Moreno E, Oyanadel C, de la Peña A, Hernández R, Pérez-Molina F, Metz C, González A, Soza A. Galectins in epithelial-mesenchymal transition: roles and mechanisms contributing to tissue repair, fibrosis and cancer metastasis. Biol Res 2024; 57:14. [PMID: 38570874 PMCID: PMC10993482 DOI: 10.1186/s40659-024-00490-5] [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: 11/08/2023] [Accepted: 03/12/2024] [Indexed: 04/05/2024] Open
Abstract
Galectins are soluble glycan-binding proteins that interact with a wide range of glycoproteins and glycolipids and modulate a broad spectrum of physiological and pathological processes. The expression and subcellular localization of different galectins vary among tissues and cell types and change during processes of tissue repair, fibrosis and cancer where epithelial cells loss differentiation while acquiring migratory mesenchymal phenotypes. The epithelial-mesenchymal transition (EMT) that occurs in the context of these processes can include modifications of glycosylation patterns of glycolipids and glycoproteins affecting their interactions with galectins. Moreover, overexpression of certain galectins has been involved in the development and different outcomes of EMT. This review focuses on the roles and mechanisms of Galectin-1 (Gal-1), Gal-3, Gal-4, Gal-7 and Gal-8, which have been involved in physiologic and pathogenic EMT contexts.
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Affiliation(s)
- Elisa Perez-Moreno
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
- Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia y Vida, Santiago, Chile
| | - Claudia Oyanadel
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
- Departamento de Ciencias Biológicas y Químicas, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Adely de la Peña
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
- Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia y Vida, Santiago, Chile
| | - Ronny Hernández
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Francisca Pérez-Molina
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Claudia Metz
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Alfonso González
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.
- Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia y Vida, Santiago, Chile.
| | - Andrea Soza
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.
- Centro Científico y Tecnológico de Excelencia (CCTE) Ciencia y Vida, Santiago, Chile.
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Nehmé R, St-Pierre Y. Targeting intracellular galectins for cancer treatment. Front Immunol 2023; 14:1269391. [PMID: 37753083 PMCID: PMC10518623 DOI: 10.3389/fimmu.2023.1269391] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 08/22/2023] [Indexed: 09/28/2023] Open
Abstract
Although considerable attention has been paid to the role of extracellular galectins in modulating, positively or negatively, tumor growth and metastasis, we have witnessed a growing interest in the role of intracellular galectins in response to their environment. This is not surprising as many galectins preferentially exist in cytosolic and nuclear compartments, which is consistent with the fact that they are exported outside the cells via a yet undefined non-classical mechanism. This review summarizes our most recent knowledge of their intracellular functions in cancer cells and provides some directions for future strategies to inhibit their role in cancer progression.
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Affiliation(s)
| | - Yves St-Pierre
- INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, QC, Canada
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Pomerleau V, Nicolas VR, Jurkovic CM, Faucheux N, Lauzon MA, Boisvert FM, Perreault N. FOXL1+ Telocytes in mouse colon orchestrate extracellular matrix biodynamics and wound repair resolution. J Proteomics 2023; 271:104755. [PMID: 36272709 DOI: 10.1016/j.jprot.2022.104755] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 10/06/2022] [Accepted: 10/10/2022] [Indexed: 11/07/2022]
Abstract
Recent studies have identified FoxL1+-telocytes (TCFoxL1+) as key players in gut epithelial-mesenchymal interactions which can determine the colonic microenvironment. Bone morphogenetic protein signaling disruption in TCFoxL1+ alters the physical and cellular microenvironment and leads to colon pathophysiology. This suggests a role for TCFoxL1+ in stromagenesis, but it is hard to identify the specific contribution of TCFoxL1+ when analyzing whole tissue profiling studies. We performed ex vivo deconstruction of control and BmpR1a△FoxL1+ colon samples, isolated the mesenchyme-enriched fractions, and determined the protein composition of the in vivo extracellular matrix (ECM) to analyze microenvironment variation. Matrisomic analysis of mesenchyme fractions revealed modulations in ECM proteins with functions associated with innate immunity, epithelial wound healing, and the collagen network. These results show that TCFoxL1+ is critical in orchestrating the biodynamics of the colon ECM. TCFoxL1+ disfunction reprograms the gut's microenvironment and drives the intestinal epithelium toward colonic pathologies. SIGNIFICANCE: In this study, the method that was elected to isolate ECM proteins might not encompass the full extent of ECM proteins in a tissue, due to the protocol chosen, as this protocol by Naba et al., targets more the insoluble part of the matrisome and eliminates the more soluble components in the first steps. However, this ECM-enrichment strategy represents an improvement and interesting avenue to study ECM proteins in the colon compared to total tissue analysis with a background of abundant cellular protein. Thus, the matrisomic approach presented in this study, and its target validation delivered a broader evaluation of the matrix remodeling occurring in the colonic sub-epithelial mesenchyme of the BmpR1a△FoxL1+ mouse model.
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Affiliation(s)
- Véronique Pomerleau
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Vilcy Reyes Nicolas
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Carla-Marie Jurkovic
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Nathalie Faucheux
- Département de génie chimique et de génie biotechnologique, Faculté de Génie, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Marc-Antoine Lauzon
- Département de génie chimique et de génie biotechnologique, Faculté de Génie, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - François-Michel Boisvert
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
| | - Nathalie Perreault
- Département d'Immunologie et Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, Canada.
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Čoma M, Manning JC, Kaltner H, Gál P. The sweet side of wound healing: galectins as promising therapeutic targets in hemostasis, inflammation, proliferation, and maturation/remodeling. Expert Opin Ther Targets 2023; 27:41-53. [PMID: 36716023 DOI: 10.1080/14728222.2023.2175318] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Understanding the molecular and cellular processes involved in skin wound healing may pave the way for the development of innovative approaches to transforming the identified natural effectors into therapeutic tools. Based on the extensive involvement of the ga(lactoside-binding)lectin family in (patho)physiological processes, it has been well established that galectins are involved in a wide range of cell-cell and cell-matrix interactions. AREAS COVERED In the present paper, we provide an overview of the biological role of galectins in repair and regeneration, focusing on four main phases (hemostasis, inflammation, proliferation, and maturation/remodeling) of skin repair using basic wound models (open excision vs. sutured incision). EXPERT OPINION The reported data make a strong case for directing further efforts to treat excisional and incisional wounds differently. Functions of galectins essentially result from their modular presentation. In fact, Gal-1 seems to play a role in the early phases of healing (anti-inflammatory) and wound contraction, Gal-3 accelerates re-epithelization and increases tensile strength (scar inductor). Galectins have also become subject of redesigning by engineering to optimize the activity. Clinically relevant, these new tools derived from the carbohydrate recognition domain platform may also prove helpful for other purposes, such as potent antibacterial agglutinins and opsonins.
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Affiliation(s)
- Matúš Čoma
- Department of Biomedical Research, East-Slovak Institute of Cardiovascular Diseases Inc, Košice, Slovak Republic.,Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University, Košice, Slovak Republic
| | - Joachim C Manning
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilian University, Munich, Germany
| | - Herbert Kaltner
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilian University, Munich, Germany
| | - Peter Gál
- Department of Biomedical Research, East-Slovak Institute of Cardiovascular Diseases Inc, Košice, Slovak Republic.,Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University, Košice, Slovak Republic.,Prague Burn Center, Third Faculty of Medicine, Charles University and University Hospital Královske Vinohrady, Prague, Czech Republic.,Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University, Bratislava, Slovak Republic
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Maged LA, Saeed S, Abdelfattah W, Gaber W. Clinical significance of Galectin-1 and Galectin-4 in rheumatoid arthritis patients and their potential role as diagnostic markers. THE EGYPTIAN RHEUMATOLOGIST 2023. [DOI: 10.1016/j.ejr.2022.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Galectin-2 in Health and Diseases. Int J Mol Sci 2022; 24:ijms24010341. [PMID: 36613785 PMCID: PMC9820181 DOI: 10.3390/ijms24010341] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/13/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
Galectin-2 is a prototype member of the galactoside-binding galectin family. It is predominately expressed in the gastrointestinal tract but is also detected in several other tissues such as the placenta and in the cardiovascular system. Galectin-2 expression and secretion by epithelial cells has been reported to contribute to the strength of the mucus layer, protect the integrity of epithelia. A number of studies have also suggested the involvement of galectin-2 in tissue inflammation, immune response and cell apoptosis. Alteration of galectin-2 expression occurs in inflammatory bowel disease, coronary artery diseases, rheumatoid arthritis, cancer, and pregnancy disorders and has been shown to be involved in disease pathogenesis. This review discusses our current understanding of the role and actions of galectin-2 in regulation of these pathophysiological conditions.
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Martin-Saldaña S, Chevalier MT, Pandit A. Therapeutic potential of targeting galectins – A biomaterials-focused perspective. Biomaterials 2022; 286:121585. [DOI: 10.1016/j.biomaterials.2022.121585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/12/2022] [Accepted: 05/15/2022] [Indexed: 12/16/2022]
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Fundora JB, Zhu J, Yanek LR, Go M, Shakeel F, Brooks SS, Yang J, Hackam DJ, Everett AD, Shores DR. Galectin-4 as a Novel Biomarker of Neonatal Intestinal Injury. Dig Dis Sci 2022; 67:863-871. [PMID: 33738671 PMCID: PMC8939249 DOI: 10.1007/s10620-021-06929-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 02/26/2021] [Indexed: 12/09/2022]
Abstract
BACKGROUND Neonates are at risk of gastrointestinal emergencies including necrotizing enterocolitis (NEC) and spontaneous intestinal perforation (SIP). Identifying biomarkers to aid in diagnosis is imperative. We hypothesized that circulating intestinal-specific protein concentrations would distinguish infants with intestinal injury from controls. AIMS To identify serum concentrations of intestinal-specific protein(s) in infants with intestinal injury and controls. METHODS We used an in silico approach to identify intestinal-specific proteins. We collected serum from control infants and infants with NEC or SIP and measured protein concentrations using ELISA. If baseline concentrations were near the detection limit in initial control assays, we proceeded to assess concentrations in a larger cohort of controls and infants with injury. Control infants were frequency matched to infants with injury and compared with nonparametric and mixed-effects models analysis. RESULTS We evaluated four proteins with high intestinal expression: Galectin-4 (Gal-4), S100G, Trefoil Factor-3, and alanyl aminopeptidase. Only Gal-4 demonstrated consistent results near the lower limit of quantification in controls and was studied in the larger cohorts. Gal-4 concentration was low in 111 control infants (median 0.012 ng/ml). By contrast, Gal-4 was significantly increased at diagnosis in infants with surgical NEC and SIP (n = 14, p ≤ 0.001 and n = 8, p = 0.031) compared to matched controls, but not in infants with medical NEC (n = 32, p = 0.10). CONCLUSIONS Of the intestinal-specific proteins evaluated, circulating Gal-4 concentrations were at the assay detection limit in control infants. Gal-4 concentrations were significantly elevated in infants with surgical NEC or SIP, suggesting that Gal-4 may serve as a biomarker for neonatal intestinal injury.
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Affiliation(s)
- Jennifer B Fundora
- Department of Pediatrics, Division of Neonatology, Johns Hopkins University School of Medicine, 1800 Orleans St, Suite 8534, Baltimore, MD, 21287, USA.
| | - Jie Zhu
- Department of Pediatrics, Division of Pediatric Cardiology, Johns Hopkins University School of Medicine, 720 Rutland Ave. Ross Building 1129, Baltimore, MD, 21205, USA
| | - Lisa R Yanek
- Department of Medicine, Johns Hopkins University School of Medicine, 1830 E Monument St 1830 Building Suite 8024, Baltimore, MD, 21287, USA
| | - Mitzi Go
- Division of Neonatology, Maternal, Fetal and Neonatal Institute, Johns Hopkins All Children's Hospital, 501 6th Ave S, St. Petersburg, FL, 33701, USA
| | - Fauzia Shakeel
- Division of Neonatology, Maternal, Fetal and Neonatal Institute, Johns Hopkins All Children's Hospital, 501 6th Ave S, St. Petersburg, FL, 33701, USA
| | - Sandra S Brooks
- Division of Neonatology, Maternal, Fetal and Neonatal Institute, Johns Hopkins All Children's Hospital, 501 6th Ave S, St. Petersburg, FL, 33701, USA
| | - Jun Yang
- Department of Pediatrics, Division of Pediatric Cardiology, Johns Hopkins University School of Medicine, 720 Rutland Ave. Ross Building 1129, Baltimore, MD, 21205, USA
| | - David J Hackam
- Department of Surgery, Division of Pediatric Surgery, Johns Hopkins University School of Medicine, 1800 Orleans St, Suite 7310, Baltimore, MD, 21287, USA
| | - Allen D Everett
- Department of Pediatrics, Division of Pediatric Cardiology, Johns Hopkins University School of Medicine, 720 Rutland Ave. Ross Building 1129, Baltimore, MD, 21205, USA
| | - Darla R Shores
- Department of Pediatrics, Division of Pediatric Gastroenterology, Johns Hopkins University School of Medicine, 600 N Wolfe St, Baltimore, MD, 21287, USA
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Regulatory T Cell Apoptosis during Preeclampsia May Be Prevented by Gal-2. Int J Mol Sci 2022; 23:ijms23031880. [PMID: 35163802 PMCID: PMC8836599 DOI: 10.3390/ijms23031880] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 02/01/2023] Open
Abstract
There are several open questions to be answered regarding the pathophysiology of the development of preeclampsia (PE). Numerous factors are involved in its genesis, such as defective placentation, vascular impairment, and an altered immune response. The activation of the adaptive and innate immune system represents an immunologic, particularity during PE. Proinflammatory cytokines are predominantly produced, whereas immune regulatory and immune suppressive factors are diminished in PE. In the present study, we focused on the recruitment of regulatory T cells (Tregs) which are key players in processes mediating immune tolerance. To identify Tregs in the decidua, an immunohistochemical staining of FoxP3 of 32 PE and 34 control placentas was performed. A clearly reduced number of FoxP3-positive cells in the decidua of preeclamptic women could be shown in our analysis (p = 0.036). Furthermore, CCL22, a well-known Treg chemoattractant, was immunohistochemically evaluated. Interestingly, CCL22 expression was increased at the maternal-fetal interface in PE-affected pregnancies (psyncytiotrophoblast = 0.035, pdecidua = 0.004). Therefore, the hypothesis that Tregs undergo apoptosis at the materno-fetal interface during PE was generated, and verified by FoxP3/TUNEL (TdT-mediated dUTP-biotin nick end labeling) staining. Galectin-2 (Gal-2), a member of the family of carbohydrate-binding proteins, which is known to be downregulated during PE, seems to play a pivotal role in T cell apoptosis. By performing a cell culture experiment with isolated Tregs, we could identify Gal-2 as a factor that seems to prevent the apoptosis of Tregs. Our findings point to a cascade of apoptosis of Tregs at the materno-fetal interface during PE. Gal-2 might be a potential therapeutic target in PE to regulate immune tolerance.
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Jergens AE, Parvinroo S, Kopper J, Wannemuehler MJ. Rules of Engagement: Epithelial-Microbe Interactions and Inflammatory Bowel Disease. Front Med (Lausanne) 2021; 8:669913. [PMID: 34513862 PMCID: PMC8432614 DOI: 10.3389/fmed.2021.669913] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 08/05/2021] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel diseases (IBD), including Crohn's disease (CD) and ulcerative colitis (UC), are complex, multifactorial disorders that lead to chronic and relapsing intestinal inflammation. The exact etiology remains unknown, however multiple factors including the environment, genetic, dietary, mucosal immunity, and altered microbiome structure and function play important roles in disease onset and progression. Supporting this notion that the gut microbiota plays a pivotal role in IBD pathogenesis, studies in gnotobiotic mice have shown that mouse models of intestinal inflammation require a microbial community to develop colitis. Additionally, antimicrobial therapy in some IBD patients will temporarily induce remission further demonstrating an association between gut microbes and intestinal inflammation. Finally, a dysfunctional intestinal epithelial barrier is also recognized as a key pathogenic factor in IBD. The intestinal epithelium serves as a barrier between the luminal environment and the mucosal immune system and guards against harmful molecules and microorganisms while being permeable to essential nutrients and solutes. Beneficial (i.e., mutualists) bacteria promote mucosal health by strengthening barrier integrity, increasing local defenses (mucin and IgA production) and inhibiting pro-inflammatory immune responses and apoptosis to promote mucosal homeostasis. In contrast, pathogenic bacteria and pathobionts suppress expression and localization of tight junction proteins, cause dysregulation of apoptosis/proliferation and increase pro-inflammatory signaling that directly damages the intestinal mucosa. This review article will focus on the role of intestinal epithelial cells (IECs) and the luminal environment acting as mediators of barrier function in IBD. We will also share some of our translational observations of interactions between IECs, immune cells, and environmental factors contributing to maintenance of mucosal homeostasis, as it relates to GI inflammation and IBD in different animal models.
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Affiliation(s)
- Albert E. Jergens
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Shadi Parvinroo
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Jamie Kopper
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
| | - Michael J. Wannemuehler
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, United States
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Fallahi F, Borran S, Ashrafizadeh M, Zarrabi A, Pourhanifeh MH, Khaksary Mahabady M, Sahebkar A, Mirzaei H. Curcumin and inflammatory bowel diseases: From in vitro studies to clinical trials. Mol Immunol 2020; 130:20-30. [PMID: 33348246 DOI: 10.1016/j.molimm.2020.11.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/17/2020] [Indexed: 02/07/2023]
Abstract
Inflammatory bowel diseases (IBDs) may result from mutations in genes encoding for innate immunity, which can lead to exacerbated inflammatory response. Although some mono-targeted treatments have developed in recent years, IBDs are caused through several pathway perturbations. Therefore, targeting all these pathways is difficult to be achieved by a single agent. Moreover, those mono-targeted therapies are usually expensive and may cause side-effects. These limitations highlight the significance of an available, inexpensive and multi-targeted dietary agents or natural compounds for the treatment and prevention of IBDs. Curcumin is a multifunctional phenolic compound that is known for its anti-inflammatory and immunomodulatory properties. Over the past decades, mounting experimental investigations have revealed the therapeutic potential of curcumin against a broad spectrum of inflammatory diseases including IBDs. Furthermore, it has been reported that curcumin directly interacts with many signaling mediators implicated in the pathogenesis of IBDs. These preclinical findings have created a solid basis for the assessment of the efficacy of curcumin in clinical practice. In clinical trials, different dosages e.g., 550 mg /three times daily-1month, and 1 g /twice times daily-6month of curcumin were used for patients with IBDs. Taken together, these findings indicated that curcumin could be employed as a therapeutic candidate in the treatment of IBDs. Moreover, it seems that overcome to current limitations of curcumin i.e., poor oral bioavailability, and poor oral absorption with using nanotechnology and others, could improve the efficacy of curcumin both in pre-clinical and clinical studies.
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Affiliation(s)
- Farzaneh Fallahi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Sarina Borran
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Milad Ashrafizadeh
- Faculty of Engineering and Natural Sciences, Sabanci University, Orta Mahalle, Istanbul, Turkey
| | - Ali Zarrabi
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, 34956, Istanbul, Turkey
| | | | - Mahmood Khaksary Mahabady
- Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Amirhossein Sahebkar
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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Li T, Weng H, Lin J, Zhang T, Zhang H, Song X, Hou X, Wei L. Cherry Valley Duck Galectin-2 Plays an Essential Role in Avian Pathogenic Escherichia coli Infection-Induced Innate Immune Response. Front Vet Sci 2020; 7:564088. [PMID: 33134350 PMCID: PMC7550657 DOI: 10.3389/fvets.2020.564088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/26/2020] [Indexed: 01/17/2023] Open
Abstract
Galectins play important roles in the host's innate immunity as pattern recognition receptors. In this study, the coding sequences of galectin-2 were identified from Cherry Valley ducks. Tissue distribution of duck galectin-2 (duGal-2) in healthy ducks and ducks infected with avian pathogenic Escherichia coli (APEC) was studied, respectively. The results showed that duGal-2 expression was higher in the gut, kidney, and liver tissue, and weakly expressed in the lung and brain, in healthy ducks; however, the expression level of duGal-2 was detected as being up-regulated after infection with APEC. In addition, knockdown or overexpression of duGal-2 in DEFs was achieved by small interference RNA (siRNA) transfection and plasmid transduction, respectively. The knockdown of duGal-2 led to a decrease in the expression of some inflammatory cytokines such as IL-1β, IL-6, and IL-8, while the expression levels of anti-inflammatory factor IL-10 were up-regulated. At the same time, the bacterial load of APEC was increased after knockdown of duGal-2 in vitro. However, the opposite results were obtained in the duGal-2 overexpression group. Taken together, duGal-2 plays an important role in the host against APEC infection.
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Affiliation(s)
- Tianxu Li
- College of Animal Science and Veterinary Medicine, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin of Shandong Province, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an City, China
| | - Hongyu Weng
- College of Animal Science and Veterinary Medicine, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin of Shandong Province, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an City, China
| | - Jing Lin
- College of Animal Science and Veterinary Medicine, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin of Shandong Province, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an City, China
| | - Tingting Zhang
- Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Tai'an City, China
| | - Huihui Zhang
- College of Animal Science and Veterinary Medicine, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin of Shandong Province, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an City, China
| | - Xingdong Song
- College of Animal Science and Veterinary Medicine, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin of Shandong Province, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an City, China
| | - Xiaolan Hou
- College of Animal Science and Veterinary Medicine, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin of Shandong Province, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an City, China
| | - Liangmeng Wei
- College of Animal Science and Veterinary Medicine, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin of Shandong Province, Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an City, China.,Collaborative Innovation Center for the Origin and Control of Emerging Infectious Diseases, Shandong First Medical University, Tai'an City, China
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14
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Kelm M, Quiros M, Azcutia V, Boerner K, Cummings RD, Nusrat A, Brazil JC, Parkos CA. Targeting epithelium-expressed sialyl Lewis glycans improves colonic mucosal wound healing and protects against colitis. JCI Insight 2020; 5:135843. [PMID: 32427587 DOI: 10.1172/jci.insight.135843] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 05/13/2020] [Indexed: 01/15/2023] Open
Abstract
Dysregulated healing of injured mucosa is a hallmark of many pathological conditions, including inflammatory bowel disease. Mucosal injury and chronic intestinal inflammation are also associated with alterations in epithelial glycosylation. Previous studies have revealed that inflammation-induced glycan sialyl Lewis A on epithelial CD44v6 acts as a ligand for transmigrating PMNs. Here we report that robust sialylated Lewis glycan expression was induced in colonic mucosa from individuals with ulcerative colitis and Crohn disease as well as in the colonic epithelium of mice with colitis induced by dextran sodium sulfate (DSS). Targeting of sialylated epithelial Lewis glycans with mAb GM35 reduced disease activity and improved mucosal integrity during DSS-induced colitis in mice. Wound healing studies revealed increased epithelial proliferation and migration responses as well as improved mucosal repair after ligation of epithelial sialyl Lewis glycans. Finally, we showed that GM35-mediated increases in epithelial proliferation and migration were mediated through activation of kinases that signal downstream of CD44v6 (Src, FAK, Akt). These findings suggest that sialylated Lewis glycans on CD44v6 represent epithelial targets for improved recovery of intestinal barrier function and restitution of mucosal homeostasis after inflammation or injury.
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Affiliation(s)
- Matthias Kelm
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Miguel Quiros
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Veronica Azcutia
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Kevin Boerner
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Asma Nusrat
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Jennifer C Brazil
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Charles A Parkos
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
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15
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Red lentil supplementation reduces the severity of dextran sodium sulfate-induced colitis in C57BL/6 male mice. J Funct Foods 2020. [DOI: 10.1016/j.jff.2019.103625] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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16
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Day RLJ, Harper AJ, Woods RM, Davies OG, Heaney LM. Probiotics: current landscape and future horizons. Future Sci OA 2019; 5:FSO391. [PMID: 31114711 PMCID: PMC6511921 DOI: 10.4155/fsoa-2019-0004] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 03/20/2019] [Indexed: 12/15/2022] Open
Abstract
In recent years there has been a rapid rise in interest for the application of probiotic supplements to act as mediators in health and disease. This appeal is predominantly due to ever-increasing evidence of the interaction of the microbiota and pathophysiological processes of disease within the human host. This narrative review considers the current landscape of the probiotic industry and its research, and discusses current pitfalls in the lack of translation from laboratory science to clinical application. Future considerations into how industry and academia must adapt probiotic research to maximize success are suggested, including more targeted application of probiotic strains dependent on individual capabilities as well as application of multiple advanced analytical technologies to further understand and accelerate microbiome science.
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Affiliation(s)
| | | | - Rachel M Woods
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, LE11 3TU, UK
| | - Owen G Davies
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, LE11 3TU, UK
| | - Liam M Heaney
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, LE11 3TU, UK
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17
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Niu J, Huang Y, Niu J, Wang Z, Tang J, Wang B, Lu Y, Cai J, Jian J. Characterization of Galectin-2 from Nile tilapia (Oreochromis niloticus) involved in the immune response to bacterial infection. FISH & SHELLFISH IMMUNOLOGY 2019; 87:737-743. [PMID: 30779996 DOI: 10.1016/j.fsi.2019.02.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 02/11/2019] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
galectin-2 plays important roles in innate and adaptive immunity. In this study, galectin-2 (OnGal-2) was identified from Nile tilapia (Oreochromis niloticus). Its tissue distribution and expression patterns following bacterial infection were also investigated. OnGal-2 is widely distributed in various tissues of healthy tilapia. After Streptococcus agalactiae challenge, OnGal-2 expressions were significantly up-regulated in all tested tissues. Meanwhile, the recombinant OnGal-2 (rOnGal-2) protein showed strong agglutinating activities against both Gram-negative bacteria and Gram-positive bacteria. Moreover, rOnGal-2 could promote phagocytosis of macrophages. Taken together, the present study indicated that OnGal-2 might play roles in the immune responses of Nile tilapia against bacterial pathogens.
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Affiliation(s)
- Jinzhong Niu
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, China
| | - Yu Huang
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jimin Niu
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, China
| | - Zhiwen Wang
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, China
| | - Jufen Tang
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Bei Wang
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yishan Lu
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jia Cai
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
| | - Jichang Jian
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, China; Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology for Aquatic Economic Animals, China; Guangdong Key Laboratory of Control for Diseases of Aquatic Economic Animals, Zhanjiang, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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18
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Ditgen D, Anandarajah EM, Reinhardt A, Younis AE, Witt S, Hansmann J, Lorenz E, García-Hernández M, Paclik D, Soblik H, Jolodar A, Seeberger PH, Liebau E, Brattig NW. Comparative characterization of two galectins excreted-secreted from intestine-dwelling parasitic versus free-living females of the soil-transmitted nematode Strongyloides. Mol Biochem Parasitol 2018; 225:73-83. [PMID: 30179636 DOI: 10.1016/j.molbiopara.2018.08.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 08/01/2018] [Accepted: 08/23/2018] [Indexed: 12/27/2022]
Abstract
Helminths are complex pathogens that ensure their long-term survival by influencing the immune responses of their host. Excretory/secretory products (ESP) can exert immunoregulatory effects which foster parasite survival. Galectins represent a widespread group of β-galactoside-binding proteins which are involved in a multitude of biological processes operative in parasite-host interaction. We had earlier identified seven galectins in Strongyloides ratti, four of them detected in the ESP of distinct developmental stages of the parasite. In the present report, we focused on the characterization of two of them, Sr-galectin-1 (Sr-Gal-1) and Sr-galectin-3 (Sr-Gal-3). While Sr-Gal-3 expression was strongest in parasitic females, Sr-Gal-1 was predominantly expressed in free-living females. Both proteins were cloned and recombinantly expressed in an E. coli expression system. Their glycan-binding activity was verified by haemagglutination and glycan array analysis. Furthermore, primary immunological activities of the Sr-galectins were initially investigated by the application of an in vitro mucosal 3D-culture model, comprising of mucosa-associated epithelial and dendritic cells. The Sr-galectins stimulated preferentially the release of the type 2 cytokines thymic stromal lymphopoietin and IL-22, a first indication for immunoregulatory activity. In addition, the Sr-galectins dose-dependently fostered cell migration. Our results confirm the importance of these carbohydrate-binding proteins in host-parasite-interaction by indicating possible interaction with the host mucosa-associated cells.
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Affiliation(s)
- D Ditgen
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany; Department of Molecular Physiology, University of Münster, Schlossplatz 8, 48143, Münster, Germany
| | - E M Anandarajah
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany; Department of Molecular Physiology, University of Münster, Schlossplatz 8, 48143, Münster, Germany
| | - A Reinhardt
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany; Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - A E Younis
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany; Zoology Department, Faculty of Science, Aswan University, Aswan, Egypt
| | - S Witt
- Cellular Parasitology Department, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - J Hansmann
- Translational Center Regenerative Therapies, Fraunhofer Institute for Silicate Research ISC, Department Tissue Engineering and Regenerative Medicine, University Hospital Würzburg, Würzburg, Germany
| | - E Lorenz
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany
| | - M García-Hernández
- Department of Biochemistry and Molecular Medicine, School of Medicine, Universidad Autonóma de Nuevo León (UANL), Monterrey, Mexico; Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany
| | - D Paclik
- Medical Department, Devision of Hepatology and Gastroenterology, Charité Campus Virchow Klinikum, Berlin, Germany
| | - H Soblik
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany; GALENpharma GmbH, 24109, Kiel, Germany
| | - A Jolodar
- School of Veterinary Medicine, Shahid Chamran University of Ahvaz, IR, Iran
| | - P H Seeberger
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany
| | - E Liebau
- Department of Molecular Physiology, University of Münster, Schlossplatz 8, 48143, Münster, Germany
| | - N W Brattig
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine, Bernhard-Nocht-Strasse 74, 20359, Hamburg, Germany
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19
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Bibi S, Du M, Zhu MJ. Dietary Red Raspberry Reduces Colorectal Inflammation and Carcinogenic Risk in Mice with Dextran Sulfate Sodium-Induced Colitis. J Nutr 2018; 148:667-674. [PMID: 29897487 PMCID: PMC7263837 DOI: 10.1093/jn/nxy007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 09/29/2017] [Accepted: 01/09/2018] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Ulcerative colitis causes recurring intestinal mucosal injury and sustained inflammation, increasing the likelihood of colorectal cancer (CRC) development. Dietary red raspberry (RB) is a rich source of phytonutrients known to have anti-inflammatory activity; however, the role of RB on CRC prevention in chronic colitis has not been examined. OBJECTIVE This study examined the effects of dietary RB supplementation on inflammation, epithelium repair, and oncogenic signaling in dextran sulfate sodium (DSS)-induced chronic colitis in mice. METHODS Six-week-old male C57BL/6J mice were fed a control or RB (5% of dry feed weight; n = 12/group) diet for 10 wk. Starting from the fourth week, mice were administered 2 repeated cycles of 1% DSS (7-d DSS treatment plus 14-d recovery) and were monitored daily for disease activity index (DAI) score. Colonic tissues were collected at the end of the study for histochemical, immunohistochemical, and biochemical analysis of inflammation, differentiation and proliferation markers. RESULTS RB supplementation reduced the DAI score and histologic damage (by 38.9%; P ≤ 0.01), expression of inflammatory mediators (by 20-70%; P ≤ 0.01), infiltration of CD4 T cells (by 50%; P ≤ 0.05), and α4β7 integrin and related adhesion molecules (by 33.3%; P ≤ 0.01). Furthermore, RB supplementation facilitated epithelium repair, as evidenced by enhanced goblet cell density, expression of transcription factors including Kruppel-like factor 4 (Klf4) and Hairy and enhancer of split 1 (Hes1), terminal differentiation markers, mucin 2 (Muc2), and intestinal alkaline phosphatase (by 20-200%; P ≤ 0.01). Conversely, proliferating cell nuclear antigen (by 70%; P ≤ 0.01), β-catenin, and signal transducer and activator of transcription 3 (STAT3) signaling (by 19-33%; P ≤ 0.05) were reduced by RB supplementation. In addition, RB supplementation enhanced p53 stability (by 53%) and reduced oncogenic gene expression (by 50-60%). CONCLUSION RB supplementation reduced DAI score and the risk of CRC development during recurring colitis in mice, suggesting that RB is a possible dietary supplement for patients with ulcerative colitis and related gut inflammatory diseases.
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Affiliation(s)
| | - Min Du
- Department of Animal Science, Washington State University, Pullman, WA
| | - Mei-Jun Zhu
- School of Food Science,Address correspondence to MJZ (e-mail:)
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20
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Nucleotide-mediated SPDEF modulates TFF3-mediated wound healing and intestinal barrier function during the weaning process. Sci Rep 2018; 8:4827. [PMID: 29555969 PMCID: PMC5859294 DOI: 10.1038/s41598-018-23218-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 03/07/2018] [Indexed: 12/14/2022] Open
Abstract
Most alterations during weaning involve physiological changes in intestinal structure and function. Here, we evaluated the molecular mechanisms regulating the effects of nucleotides on weaning. Nucleotide treatment induced Trefoil factor 3 (TFF3) expression and IPEC-J2 cell growth and reduced wound width. Treatment with nucleosides and TFF3 in lipopolysaccharide-challenged IPEC-J2 cells increased intestinal transepithelial electrical resistance and decreased intestinal permeability. Additionally, nucleosides improved intestinal barrier function through induction of TFF3-mediated phosphatidylinositol 3-kinase/Akt, extracellular signal-regulated kinase 1/2, p38, and Janus kinase/signal transducer and activator of transcription signaling pathways. Among selected differentially expressed genes, SAM pointed domain containing ETS transcription factor (SPDEF) expression was elevated by nucleotides in a concentration-dependent manner. Moreover, SPDEF directly regulated TFF3 expression via binding to the promoter. In vivo, nucleotide supplementation improved growth performance, serum stress levels, and intestinal morphology. Our findings provide insights into the molecular mechanisms of intestinal development during weaning in pigs.
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21
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Sundblad V, Quintar AA, Morosi LG, Niveloni SI, Cabanne A, Smecuol E, Mauriño E, Mariño KV, Bai JC, Maldonado CA, Rabinovich GA. Galectins in Intestinal Inflammation: Galectin-1 Expression Delineates Response to Treatment in Celiac Disease Patients. Front Immunol 2018; 9:379. [PMID: 29545799 PMCID: PMC5837985 DOI: 10.3389/fimmu.2018.00379] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 02/12/2018] [Indexed: 12/21/2022] Open
Abstract
Galectins, a family of animal lectins characterized by their affinity for N-acetyllactosamine-enriched glycoconjugates, modulate several immune cell processes shaping the course of innate and adaptive immune responses. Through interaction with a wide range of glycosylated receptors bearing complex branched N-glycans and core 2-O-glycans, these endogenous lectins trigger distinct signaling programs thereby controling immune cell activation, differentiation, recruitment and survival. Given the unique features of mucosal inflammation and the differential expression of galectins throughout the gastrointestinal tract, we discuss here key findings on the role of galectins in intestinal inflammation, particularly Crohn’s disease, ulcerative colitis, and celiac disease (CeD) patients, as well as in murine models resembling these inflammatory conditions. In addition, we present new data highlighting the regulated expression of galectin-1 (Gal-1), a proto-type member of the galectin family, during intestinal inflammation in untreated and treated CeD patients. Our results unveil a substantial upregulation of Gal-1 accompanying the anti-inflammatory and tolerogenic response associated with gluten-free diet in CeD patients, suggesting a major role of this lectin in favoring resolution of inflammation and restoration of mucosal homeostasis. Thus, a coordinated network of galectins and their glycosylated ligands, exerting either anti-inflammatory or proinflammatory responses, may influence the interplay between intestinal epithelial cells and the highly specialized gut immune system in physiologic and pathologic settings.
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Affiliation(s)
- Victoria Sundblad
- Laboratorio de Inmunopatología, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Amado A Quintar
- Centro de Microscopía Electrónica, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina.,Instituto de Investigaciones en Ciencias de la Salud (INICSA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
| | - Luciano G Morosi
- Laboratorio de Inmunopatología, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Laboratorio de Glicómica Funcional y Molecular, Instituto de Biología y Medicina Experimental (IBYME), Consejo de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Sonia I Niveloni
- Sección Intestino Delgado, Departamento de Medicina, Hospital de Gastroenterología Dr. C. Bonorino Udaondo, Buenos Aires, Argentina
| | - Ana Cabanne
- Unidad de Patología, Hospital de Gastroenterología, Bonorino Udaondo, Buenos Aires, Argentina
| | - Edgardo Smecuol
- Sección Intestino Delgado, Departamento de Medicina, Hospital de Gastroenterología Dr. C. Bonorino Udaondo, Buenos Aires, Argentina
| | - Eduardo Mauriño
- Sección Intestino Delgado, Departamento de Medicina, Hospital de Gastroenterología Dr. C. Bonorino Udaondo, Buenos Aires, Argentina
| | - Karina V Mariño
- Laboratorio de Glicómica Funcional y Molecular, Instituto de Biología y Medicina Experimental (IBYME), Consejo de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Julio C Bai
- Sección Intestino Delgado, Departamento de Medicina, Hospital de Gastroenterología Dr. C. Bonorino Udaondo, Buenos Aires, Argentina.,Instituto de Investigaciones, Universidad del Salvador, Buenos Aires, Argentina
| | - Cristina A Maldonado
- Centro de Microscopía Electrónica, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina.,Instituto de Investigaciones en Ciencias de la Salud (INICSA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
| | - Gabriel A Rabinovich
- Laboratorio de Inmunopatología, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.,Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
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22
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Navy and black bean supplementation attenuates colitis-associated inflammation and colonic epithelial damage. J Nutr Biochem 2018; 56:215-223. [PMID: 29631142 DOI: 10.1016/j.jnutbio.2018.02.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 01/15/2018] [Accepted: 02/21/2018] [Indexed: 12/15/2022]
Abstract
The enriched levels of nondigestible fermentable carbohydrates and phenolic compounds found in common beans can exert immunomodulatory effects within the colon that improve gut health and mitigate the severity of colitis-associated inflammatory pathology. Prior to acute colitis onset, C57Bl/6 mice were prefed isocaloric 20% cooked navy bean (NB) or black bean (BB) diets for 3 weeks and switched to control basal diet (BD) 24 h prior to colitis induction via 5-day exposure to dextran sodium sulfate (2% w/v in drinking water)+3 days of fresh water. The severity of the acute colitis phenotype was attenuated by bean prefeeding, evidenced by reduced colon tissue inflammatory transcription factor activation (NFκB, STAT3) and inflammatory mediator levels in the colon (IL-1β, IL-6, IL-18 and MCP-1) and serum (TNFα, IL-6, IL-1β, MCP-1) versus BD (P≤.05). Additionally, biomarkers of enhanced wound repair responses were increased by bean prefeeding including colon tissue protein levels of IL-22, IL-27 and activated (i.e., GTP-bound) Cdc42 and Rac1 versus BD (P≤.05). mRNA expressions of genes involved in normal colonic epithelial function and the promotion of epithelial barrier integrity, defense and/or restitution and wound closure including MUC1, RELMβ, IgA and REG3γ were all increased in NB and BB prefed mice versus BD (P≤.05). Collectively, bean supplementation prior to colitis induction (i.e., mimicking disease relapse) primes the colonic microenvironment to attenuate the severity of the colitis inflammatory phenotype and maintain aspects of epithelial barrier function.
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23
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YAP triggers the Wnt/β-catenin signalling pathway and promotes enterocyte self-renewal, regeneration and tumorigenesis after DSS-induced injury. Cell Death Dis 2018; 9:153. [PMID: 29396428 PMCID: PMC5833613 DOI: 10.1038/s41419-017-0244-8] [Citation(s) in RCA: 129] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 11/13/2017] [Accepted: 12/18/2017] [Indexed: 02/06/2023]
Abstract
Impaired epithelial regeneration is a crucial pathophysiological feature of ulcerative colitis (UC). Yes-associated protein (YAP1) appears to control cell proliferation and differentiation. In this study, we sought to identify the roles of YAP in intestinal epithelial cell (IEC) self-renewal, regeneration and tumorigenesis. We first observed that YAP was significantly reduced in 62.5% (45/72) of human UC tissues and it was dramatically enhanced during epithelial regeneration in a murine colitis model. Using lentiviral infection, we established a YAP-overexpression (YAPWT) mouse model. We then found that after tissue injury, YAPWT mice had increased epithelial cell self-renewal capacity and drastically restored intestinal crypt structure. Strikingly, these mice were more susceptible to colitis-associated cancer (CAC) in chemically induced carcinoma. Mechanistically, YAP and β-catenin showed increased nuclear co-localization during regeneration after inflammation. Overexpressing YAP significantly improved IEC ‘wound-healing’ ability and increased the expression of both β-catenin and the transcriptional targets of Wnt signalling Lgr5 and cyclin D1, whereas silencing β-catenin in YAPWT cells attenuated this effect. Remarkably, we observed that YAP could directly interact with β-catenin in the nucleus and formed a transcriptional YAP/β-catenin/TCF4 complex; Lgr5 and cyclin D1 were confirmed to be the target genes of this complex. In contrast, cancer cell proliferation and tumour development were suppressed by the phospho-mimetic YAP mutant. In summary, nuclear YAP-driven IEC proliferation could control epithelial regeneration after inflammation and may serve as a potential therapeutic target in UC. However, excessive YAP activation promoted CAC development.
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Moussa L, Usunier B, Demarquay C, Benderitter M, Tamarat R, Sémont A, Mathieu N. Bowel Radiation Injury: Complexity of the Pathophysiology and Promises of Cell and Tissue Engineering. Cell Transplant 2018; 25:1723-1746. [PMID: 27197023 DOI: 10.3727/096368916x691664] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Ionizing radiation is effective to treat malignant pelvic cancers, but the toxicity to surrounding healthy tissue remains a substantial limitation. Early and late side effects not only limit the escalation of the radiation dose to the tumor but may also be life-threatening in some patients. Numerous preclinical studies determined specific mechanisms induced after irradiation in different compartments of the intestine. This review outlines the complexity of the pathogenesis, highlighting the roles of the epithelial barrier in the vascular network, and the inflammatory microenvironment, which together lead to chronic fibrosis. Despite the large number of pharmacological molecules available, the studies presented in this review provide encouraging proof of concept regarding the use of mesenchymal stromal cell (MSC) therapy to treat radiation-induced intestinal damage. The therapeutic efficacy of MSCs has been demonstrated in animal models and in patients, but an enormous number of cells and multiple injections are needed due to their poor engraftment capacity. Moreover, it has been observed that although MSCs have pleiotropic effects, some intestinal compartments are less restored after a high dose of irradiation. Future research should seek to optimize the efficacy of the injected cells, particularly with regard to extending their life span in the irradiated tissue. Moreover, improving the host microenvironment, combining MSCs with other specific regenerative cells, or introducing new tissue engineering strategies could be tested as methods to treat the severe side effects of pelvic radiotherapy.
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Affiliation(s)
- Lara Moussa
- Institut de Radioprotection et de SÛreté Nucléaire (IRSN), PRP-HOM/SRBE/LR2I, Fontenay-aux-Roses, France
| | - Benoît Usunier
- Institut de Radioprotection et de SÛreté Nucléaire (IRSN), PRP-HOM/SRBE/LR2I, Fontenay-aux-Roses, France
| | - Christelle Demarquay
- Institut de Radioprotection et de SÛreté Nucléaire (IRSN), PRP-HOM/SRBE/LR2I, Fontenay-aux-Roses, France
| | - Marc Benderitter
- Institut de Radioprotection et de SÛreté Nucléaire (IRSN), PRP-HOM/SRBE/LR2I, Fontenay-aux-Roses, France
| | - Radia Tamarat
- Institut de Radioprotection et de SÛreté Nucléaire (IRSN), PRP-HOM/SRBE/LR2I, Fontenay-aux-Roses, France
| | - Alexandra Sémont
- Institut de Radioprotection et de SÛreté Nucléaire (IRSN), PRP-HOM/SRBE/LR2I, Fontenay-aux-Roses, France
| | - Noëlle Mathieu
- Institut de Radioprotection et de SÛreté Nucléaire (IRSN), PRP-HOM/SRBE/LR2I, Fontenay-aux-Roses, France
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The roles of galectins in parasitic infections. Acta Trop 2018; 177:97-104. [PMID: 28986248 DOI: 10.1016/j.actatropica.2017.09.027] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/10/2017] [Accepted: 09/29/2017] [Indexed: 12/18/2022]
Abstract
Galectins is a family of multifunctional lectins. Fifteen galectins have been identified from a variety of cells and tissues of vertebrates and invertebrates. Galectins have been shown to play pivotal roles in host-pathogen interaction such as adhesion of pathogens to host cells and activation of host innate and adaptive immunity. In recent years, the roles of galectins during parasite infections have gained increasing attention. Galectins produced by different hosts can act as pattern recognition receptors detecting conserved pathogen-associated molecular patterns of parasites, while galectins produced by parasites can modulate host responses. This review summarizes some recent studies on the roles of galectins produced by parasitic protozoa, nematodes, and trematodes and their hosts. Understanding the roles of galectins in host-parasite interactions may provide targets for immune intervention and therapies of parasitic infections.
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Thulasitha WS, Umasuthan N, Wan Q, Nam BH, Kang TW, Lee J. A proto-type galectin-2 from rock bream (Oplegnathus fasciatus): Molecular, genomic, and expression analysis, and recognition of microbial pathogens by recombinant protein. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 71:70-81. [PMID: 28131766 DOI: 10.1016/j.dci.2017.01.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 01/24/2017] [Accepted: 01/24/2017] [Indexed: 06/06/2023]
Abstract
A β-galactoside binding lectin, designated as galectin-2, was identified and characterized from rock bream Oplegnathus fasciatus (OfGal-2). The cDNA of OfGal-2 comprised of 692 bp with a coding sequence of 396 bp, encoding a putative polypeptide of 131 amino acids. Gene structure analysis of OfGal-2 revealed a four exon-three intron organization. A single carbohydrate-binding domain containing all seven important residues for carbohydrate binding was located in the third exon, which formed a carbohydrate-binding pocket. Homology screening and sequence analysis demonstrated that OfGal-2 is an evolutionarily conserved proto-type galectin. OfGal-2 transcripts were detected in several healthy fish tissues, with the highest level observed in the intestine, followed by the liver. The expression of OfGal-2 was elevated upon the injection of various mitogenic stimulants and pathogens in a time-dependent manner. Upregulated expression in the liver after tissue injury suggested its role as a damage-associated molecular pattern. Recombinant OfGal-2 protein had hemagglutinating potential and possessed affinity towards lactose and galactose. Moreover, the recombinant protein agglutinated and bound potential pathogenic bacteria and a ciliate. The results of this study indicate that the galectin-2 from rock bream has a potential role in immunity, particularly in the recognition of invading pathogens.
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Affiliation(s)
- William Shanthakumar Thulasitha
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea; Department of Zoology, University of Jaffna, Jaffna 40000, Sri Lanka
| | - Navaneethaiyer Umasuthan
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea; Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-8570, Japan
| | - Qiang Wan
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan 46083, Republic of Korea
| | - Tae-Wook Kang
- Insilicogen Inc., Giheung-gu, Yongin-si, Gyeonggi-do, 16954, Republic of Korea.
| | - Jehee Lee
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea.
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Mend Your Fences: The Epithelial Barrier and its Relationship With Mucosal Immunity in Inflammatory Bowel Disease. Cell Mol Gastroenterol Hepatol 2017; 4:33-46. [PMID: 28560287 PMCID: PMC5439240 DOI: 10.1016/j.jcmgh.2017.03.007] [Citation(s) in RCA: 375] [Impact Index Per Article: 53.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/20/2017] [Indexed: 12/12/2022]
Abstract
The intestinal epithelium can be easily disrupted during gut inflammation as seen in inflammatory bowel disease (IBD), such as ulcerative colitis or Crohn's disease. For a long time, research into the pathophysiology of IBD has been focused on immune cell-mediated mechanisms. Recent evidence, however, suggests that the intestinal epithelium might play a major role in the development and perpetuation of IBD. It is now clear that IBD can be triggered by disturbances in epithelial barrier integrity via dysfunctions in intestinal epithelial cell-intrinsic molecular circuits that control the homeostasis, renewal, and repair of intestinal epithelial cells. The intestinal epithelium in the healthy individual represents a semi-permeable physical barrier shielding the interior of the body from invasions of pathogens on the one hand and allowing selective passage of nutrients on the other hand. However, the intestinal epithelium must be considered much more than a simple physical barrier. Instead, the epithelium is a highly dynamic tissue that responds to a plenitude of signals including the intestinal microbiota and signals from the immune system. This epithelial response to these signals regulates barrier function, the composition of the microbiota, and mucosal immune homeostasis within the lamina propria. The epithelium can thus be regarded as a translator between the microbiota and the immune system and aberrant signal transduction between the epithelium and adjacent immune cells might promote immune dysregulation in IBD. This review summarizes the important cellular and molecular barrier components of the intestinal epithelium and emphasizes the mechanisms leading to barrier dysfunction during intestinal inflammation.
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Key Words
- BMP, bone morphogenic protein
- CD, Crohn's disease
- Fz, frizzled
- HD, humans α-defensin
- IBD, inflammatory bowel disease
- IECs, intestinal epithelial cells
- IL, interleukin
- Immune-Epithelial Crosstalk
- Intestinal Epithelial Barrier
- Intestinal Inflammation
- JAMs, junctional adhesion molecules
- Lgr5, leucine rich repeat containing G-protein coupled receptor 5
- MARVEL, myelin and lymphocyte and related proteins for vesicle trafficking and membrane link
- MLCK, myosin light chain kinase
- NFκB, nuclear factor kappa-light-chain-enhancer of activated B cells
- NOD-2, nucleotide-binding oligomerization domain-containing protein 2
- STAT, signal transducer and activator of transcription
- TAMP, tight junction–associated MARVEL protein
- TJ, tight junction
- TNF, tumor necrosis factor
- TSLP, thymic stromal lymphopoietin
- UC, ulcerative colitis
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Power KA, Lu JT, Monk JM, Lepp D, Wu W, Zhang C, Liu R, Tsao R, Robinson LE, Wood GA, Wolyn DJ. Purified rutin and rutin-rich asparagus attenuates disease severity and tissue damage following dextran sodium sulfate-induced colitis. Mol Nutr Food Res 2016; 60:2396-2412. [PMID: 27349947 DOI: 10.1002/mnfr.201500890] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 06/07/2016] [Accepted: 06/15/2016] [Indexed: 12/25/2022]
Abstract
SCOPE This study investigated the effects of cooked whole asparagus (ASP) versus its equivalent level of purified flavonoid glycoside, rutin (RUT), on dextran sodium sulfate (DSS)-induced colitis and subsequent colitis recovery in mice. METHODS AND RESULTS C57BL/6 male mice were fed an AIN-93G basal diet (BD), or BD supplemented with 2% cooked ASP or 0.025% RUT for 2 wks prior to and during colitis induction with 2% DSS in water for 7 days, followed by 5 days colitis recovery. In colitic mice, both ASP and RUT upregulated mediators of improved barrier integrity and enhanced mucosal injury repair (e.g. Muc1, IL-22, Rho-A, Rac1, and Reg3γ), increased the proportion of mouse survival, and improved disease activity index. RUT had the greatest effect in attenuating DSS-induced colonic damage indicated by increased crypt and goblet cell restitution, reduced colonic myeloperoxidase, as well as attenuated DSS-induced microbial dysbiosis (reduced Enterobacteriaceae and Bacteroides, and increased unassigned Clostridales, Oscillospira, Lactobacillus, and Bifidobacterium). CONCLUSION These findings demonstrate that dietary cooked ASP and its flavonoid glycoside, RUT, may be useful in attenuating colitis severity by modulating the colonic microenvironment resulting in reduced colonic inflammation, promotion of colonic mucosal injury repair, and attenuation of colitis-associated microbial dysbiosis.
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Affiliation(s)
- Krista A Power
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Jenifer T Lu
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Jennifer M Monk
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Dion Lepp
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Wenqing Wu
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Claire Zhang
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Ronghua Liu
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Rong Tsao
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Lindsay E Robinson
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Geoffrey A Wood
- Department of Pathobiology, University of Guelph, Guelph, ON, Canada
| | - David J Wolyn
- Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada
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Si Y, Feng S, Gao J, Wang Y, Zhang Z, Meng Y, Zhou Y, Tai G, Su J. Human galectin-2 interacts with carbohydrates and peptides non-classically: new insight from X-ray crystallography and hemagglutination. Acta Biochim Biophys Sin (Shanghai) 2016; 48:939-947. [PMID: 27563008 DOI: 10.1093/abbs/gmw089] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 07/29/2016] [Indexed: 12/15/2022] Open
Abstract
Galectin-2 (Gal-2) plays a role in cancer, myocardial infarction, immune response, and gastrointestinal tract diseases. The only reported crystal structure of Gal-2 shows that it is a dimer in which the monomer subunits have almost identical structures, each binding with one molecule of lactose. In this study, we crystallized Gal-2 under new conditions that produced three crystal structures. In each Gal-2 dimer structure, lactose was shown to be bound to only one of the carbohydrate recognition domain subunits. In solution studies, the thermal shift assay demonstrated that inequivalent monomer subunits in the Gal-2 dimer become equivalent upon ligand binding. In addition, galectin-mediated erythrocyte agglutination assays using lactose and larger complex polysaccharides as inhibitors showed the structural differences between Gal-1 and Gal-2. Overall, our results reveal some novel aspects to the structural differentiation in Gal-2 and expand the potential for different types of molecular interactions that may be specific to this lectin.
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Affiliation(s)
- Yunlong Si
- Jilin Province Key Laboratory on Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Shiqiong Feng
- Jilin Province Key Laboratory on Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Jin Gao
- Jilin Province Key Laboratory on Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Yue Wang
- Jilin Province Key Laboratory on Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Zhongyu Zhang
- Jilin Province Key Laboratory on Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Yue Meng
- Jilin Province Key Laboratory on Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Yifa Zhou
- Jilin Province Key Laboratory on Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Guihua Tai
- Jilin Province Key Laboratory on Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Jiyong Su
- Jilin Province Key Laboratory on Chemistry and Biology of Natural Drugs in Changbai Mountain, School of Life Sciences, Northeast Normal University, Changchun 130024, China
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Arikawa T, Liao S, Shimada H, Inoue T, Sakata-Haga H, Nakamura T, Hatta T, Shoji H. Galectin-4 expression is down-regulated in response to autophagy during differentiation of rat trophoblast cells. Sci Rep 2016; 6:32248. [PMID: 27572741 PMCID: PMC5004202 DOI: 10.1038/srep32248] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 08/03/2016] [Indexed: 12/31/2022] Open
Abstract
Placental development and trophoblast invasion of the maternal endometrium establish the maternal-fetal interface, which is critical for the developing embryo and fetus. Herein we show that overexpression of Galectin-4 (Gal-4) during trophoblast differentiation inhibited the enlargement of Rcho-1 cells (a model for rat trophoblast differentiation) and promoted cell-cell adhesion, whereas trophoblast specific markers and MMP-9 activity were not affected. In the rat placenta, microtubule associated protein 1 light chain 3 alpha (LC3) protein, an autophagy marker, is highly expressed on the maternal side of the decidua where Gal-4 expression is weak. In vitro assays showed that the expression of trophoblast-specific differentiation markers was reduced by 3-Methyladenine (3-MA) and Bafilomycin A1, known as autophagy inhibitors, compared to control cells. Furthermore, Gal-4 expression in Rcho-1 cells, which is normally down-regulated during differentiation, was not attenuated in the presence of autophagy inhibitors, suggesting that autophagy is upstream of Gal-4 expression. We herein describe a possible mechanism by which autophagy regulates trophoblast differentiation via regulation of Gal-4 expression in order to establish the maternal-fetal interface.
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Affiliation(s)
- Tomohiro Arikawa
- Department of Biology, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Shengjun Liao
- Department of Biology, Kanazawa Medical University, Uchinada, Ishikawa, Japan.,Medical Research Institute, Kanazawa Medical University, Uchinada, Ishikawa, Japan.,Department of Clinical Laboratory, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Hiroki Shimada
- Department of Anatomy, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Tomoki Inoue
- Department of Mathematics, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Hiromi Sakata-Haga
- Department of Anatomy, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Takanori Nakamura
- Department of Endocrinology, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Toshihisa Hatta
- Department of Anatomy, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Hiroki Shoji
- Department of Biology, Kanazawa Medical University, Uchinada, Ishikawa, Japan
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Siiki A, Jesenofsky R, Löhr M, Nordback I, Kellomäki M, Gröhn H, Mikkonen J, Sand J, Laukkarinen J. Biodegradable biliary stents have a different effect than covered metal stents on the expression of proteins associated with tissue healing in benign biliary strictures. Scand J Gastroenterol 2016; 51:880-5. [PMID: 27003149 DOI: 10.3109/00365521.2016.1156153] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Benign biliary strictures (BBS) are primarily treated endoscopically with covered self-expandable metal stents (CSEMS). Biodegradable biliary stents (BDBS) may be the future of endoscopic therapy of BBS. The aim was to assess the expression of proteins related to tissue healing in BBS compared with the intact bile duct (BD), and to study the protein expression after therapy with CSEMS or BDBS. METHODS Pigs with ischemic BBS were endoscopically treated either with BDBS or CSEMS. Samples were harvested from pigs with intact BD (n = 5), untreated BBS (n = 5), and after six months of therapy with BDBS (n = 4) or CSEMS (n = 5) with subsequent histologic analysis. Two-dimensional electrophoresis with protein identification was performed to evaluate protein expression patterns. RESULTS In BBS, the expression of galectin-2 and annexin-A4 decreased, compared to intact BD. Treatment with biodegradable stents normalized galectin-2 level; with CSEMS therapy it remained low. Transgelin expression of intact BD and BBS remained low after BDBS treatment but increased after CSEMS therapy. Histologic analysis did not show unwanted foreign body reaction or hyperplasia in the BD in either group. CONCLUSIONS The expression of proteins related to tissue healing in BBS is different after treatment with biodegradable stents and CSEMS. Treatment with biodegradable stents may bring protein expression towards what is seen in intact BD. BDBS seem to have a good biocompatibility.
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Affiliation(s)
- Antti Siiki
- a Department of Gastroenterology and Alimentary Tract Surgery , Tampere University Hospital , Tampere , Finland
| | - Ralf Jesenofsky
- b Department of Medicine II , University of Heidelberg , Mannheim , Germany
| | - Matthias Löhr
- c Karolinska University Hospital, Gastrocentrum , Huddinge , Sweden
| | - Isto Nordback
- a Department of Gastroenterology and Alimentary Tract Surgery , Tampere University Hospital , Tampere , Finland
| | - Minna Kellomäki
- d Biomaterials and Tissue Engineering Group, BioMediTech and Department of Electronics and Communications Engineering , Tampere University of Technology , Tampere , Finland
| | - Heidi Gröhn
- e Department of Clinical Physiology and Nuclear Medicine , Kuopio University Hospital , Kuopio , Finland
| | - Joonas Mikkonen
- d Biomaterials and Tissue Engineering Group, BioMediTech and Department of Electronics and Communications Engineering , Tampere University of Technology , Tampere , Finland
| | - Juhani Sand
- a Department of Gastroenterology and Alimentary Tract Surgery , Tampere University Hospital , Tampere , Finland
| | - Johanna Laukkarinen
- a Department of Gastroenterology and Alimentary Tract Surgery , Tampere University Hospital , Tampere , Finland
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Zanello G, Goethel A, Rouquier S, Prescott D, Robertson SJ, Maisonneuve C, Streutker C, Philpott DJ, Croitoru K. The Cytosolic Microbial Receptor Nod2 Regulates Small Intestinal Crypt Damage and Epithelial Regeneration following T Cell-Induced Enteropathy. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2016; 197:345-55. [PMID: 27206769 DOI: 10.4049/jimmunol.1600185] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 04/21/2016] [Indexed: 12/21/2022]
Abstract
Loss of function in the NOD2 gene is associated with a higher risk of developing Crohn's disease (CD). CD is characterized by activation of T cells and activated T cells are involved in mucosal inflammation and mucosal damage. We found that acute T cell activation with anti-CD3 mAb induced stronger small intestinal mucosal damage in NOD2(-/-) mice compared with wild-type mice. This enhanced mucosal damage was characterized by loss of crypt architecture, increased epithelial cell apoptosis, delayed epithelial regeneration and an accumulation of inflammatory cytokines and Th17 cells in the small intestine. Partial microbiota depletion with antibiotics did not decrease mucosal damage 1 d after anti-CD3 mAb injection, but it significantly reduced crypt damage and inflammatory cytokine secretion in NOD2(-/-) mice 3 d after anti-CD3 mAb injection, indicating that microbial sensing by Nod2 was important to control mucosal damage and epithelial regeneration after anti-CD3 mAb injection. To determine which cells play a key role in microbial sensing and regulation of mucosal damage, we engineered mice carrying a cell-specific deletion of Nod2 in villin and Lyz2-expressing cells. T cell activation did not worsen crypt damage in mice carrying either cell-specific deletion of Nod2 compared with wild-type mice. However, increased numbers of apoptotic epithelial cells and higher expression of TNF-α and IL-22 were observed in mice carrying a deletion of Nod2 in Lyz2-expressing cells. Taken together, our results demonstrate that microbial sensing by Nod2 is an important mechanism to regulate small intestinal mucosal damage following acute T cell activation.
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Affiliation(s)
- Galliano Zanello
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Ashleigh Goethel
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Sandrine Rouquier
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - David Prescott
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Susan J Robertson
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Charles Maisonneuve
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Catherine Streutker
- Department of Pathology and Laboratory Medicine, St. Michael's Hospital, Toronto, Ontario M5B 1W8, Canada
| | - Dana J Philpott
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Kenneth Croitoru
- Department of Medicine, University of Toronto, Toronto, Ontario M5S 1A8, Canada; Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada; Zane Cohen Centre for Digestive Diseases, The Lunenfeld-Tanenbaum Research Institute, Sinai Health System, Toronto, Ontario M5G 1X5, Canada; and Division of Gastroenterology, Mount Sinai Hospital, Toronto, Ontario M5G 1X5, Canada
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Noll AJ, Gourdine JP, Yu Y, Lasanajak Y, Smith DF, Cummings RD. Galectins are human milk glycan receptors. Glycobiology 2016; 26:655-69. [PMID: 26747425 PMCID: PMC4847615 DOI: 10.1093/glycob/cww002] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 12/21/2015] [Accepted: 01/05/2016] [Indexed: 12/12/2022] Open
Abstract
The biological recognition of human milk glycans (HMGs) is poorly understood. Because HMGs are rich in galactose we explored whether they might interact with human galectins, which bind galactose-containing glycans and are highly expressed in epithelial cells and other cell types. We screened a number of human galectins for their binding to HMGs on a shotgun glycan microarray consisting of 247 HMGs derived from human milk, as well as to a defined HMG microarray. Recombinant human galectins (hGal)-1, -3, -4, -7, -8 and -9 bound selectively to glycans, with each galectin recognizing a relatively unique binding motif; by contrast hGal-2 did not recognize HMGs, but did bind to the human blood group A Type 2 determinants on other microarrays. Unlike other galectins, hGal-7 preferentially bound to glycans expressing a terminal Type 1 (Galβ1-3GlcNAc) sequence, a motif that had eluded detection on non-HMG glycan microarrays. Interactions with HMGs were confirmed in a solution setting by isothermal titration microcalorimetry and hapten inhibition experiments. These results demonstrate that galectins selectively bind to HMGs and suggest the possibility that galectin-HMG interactions may play a role in infant immunity.
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Affiliation(s)
- Alexander J Noll
- Department of Biochemistry, School of Medicine, Emory University, Atlanta, GA, USA
| | | | - Ying Yu
- Department of Biochemistry, School of Medicine, Emory University, Atlanta, GA, USA
| | - Yi Lasanajak
- Department of Biochemistry, School of Medicine, Emory University, Atlanta, GA, USA
| | - David F Smith
- Department of Biochemistry, School of Medicine, Emory University, Atlanta, GA, USA
| | - Richard D Cummings
- Department of Biochemistry, School of Medicine, Emory University, Atlanta, GA, USA Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, CLS 11087-3 Blackfan Circle, Boston, MA 02115, USA
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Abstract
Galectin-4, a tandem repeat member of the β-galactoside-binding proteins, possesses two carbohydrate-recognition domains (CRD) in a single peptide chain. This lectin is mostly expressed in epithelial cells of the intestinal tract and secreted to the extracellular. The two domains have 40% similarity in amino acid sequence, but distinctly binding to various ligands. Just because the two domains bind to different ligands simultaneously, galectin-4 can be a crosslinker and crucial regulator in a large number of biological processes. Recent evidence shows that galectin-4 plays an important role in lipid raft stabilization, protein apical trafficking, cell adhesion, wound healing, intestinal inflammation, tumor progression, etc. This article reviews the physiological and pathological features of galectin-4 and its important role in such processes.
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The expression profiles of the galectin gene family in colorectal adenocarcinomas. Hum Pathol 2016; 53:105-13. [PMID: 27001434 DOI: 10.1016/j.humpath.2016.02.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/14/2016] [Accepted: 02/19/2016] [Indexed: 12/15/2022]
Abstract
We aim to investigate the expression profiles of galectin family genes (galectins-1, 2, 3, 4, 7, 8, 9, 10, and 11) in colorectal carcinomas. Messenger RNA (mRNA) expression of galectin family members (1, 2, 3, 4, 7, 8, 9, 10, and 12) was analyzed by real-time polymerase chain reaction in colorectal tissues from 201 patients (54 noncancer colorectal tissues, 49 adenomas, and 98 adenocarcinomas). Galectin-1 and galectin-3 protein expressions were determined by immunohistochemistry. In general, high galectin mRNA expression was noted in colorectal carcinomas in early stages of their pathogenesis. Significant differences in galectins-2, 3, 7, 8, and 10 mRNA expression were associated with pathologic stages (P<.05). Increased prevalence of galectins-2, 7, 8, and 10 mRNA overexpression was noted in nonmetastatic colorectal carcinomas (P<.05). Galectin-1 and galectin-3 proteins were present in the nucleus and cytoplasm of the colorectal tissues and expressed significantly higher in colorectal carcinomas when compared to colorectal adenomas (61% and 95%, respectively). Patients with colorectal carcinoma with high levels of galectin-3 mRNA and protein expression showed better prognosis (P=.052). To conclude, many novel correlations between the deregulation of galectin family genes and various clinicopathological features in colorectal adenocarcinoma were noted. Overexpression of galectins at the mRNA level and proteins were predominant in earlier stages of colorectal carcinomas. These altered expression patterns of galectin genes suggest the multifunctional role of galectin genes in the regulation of colorectal cancer development, progression, and metastasis.
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Yamada A, Arakaki R, Saito M, Tsunematsu T, Kudo Y, Ishimaru N. Role of regulatory T cell in the pathogenesis of inflammatory bowel disease. World J Gastroenterol 2016; 22:2195-205. [PMID: 26900284 PMCID: PMC4734996 DOI: 10.3748/wjg.v22.i7.2195] [Citation(s) in RCA: 129] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 11/11/2015] [Accepted: 12/08/2015] [Indexed: 02/06/2023] Open
Abstract
Regulatory T (Treg) cells play key roles in various immune responses. For example, Treg cells contribute to the complex pathogenesis of inflammatory bowel disease (IBD), which includes Crohn's disease and ulcerative colitis during onset or development of that disease. Many animal models of IBD have been used to investigate factors such as pathogenic cytokines, pathogenic bacteria, and T-cell functions, including those of Treg cells. In addition, analyses of patients with IBD facilitate our understanding of the precise mechanism of IBD. This review article focuses on the role of Treg cells and outlines the pathogenesis and therapeutic strategies of IBD based on previous reports.
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Immunohistochemical Studies on Galectin Expression in Colectomised Patients with Ulcerative Colitis. BIOMED RESEARCH INTERNATIONAL 2016; 2016:5989128. [PMID: 26885508 PMCID: PMC4739479 DOI: 10.1155/2016/5989128] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 11/11/2015] [Accepted: 12/20/2015] [Indexed: 12/19/2022]
Abstract
Introduction. The aetiology and pathogenesis of ulcerative colitis (UC) are essentially unknown. Galectins are carbohydrate-binding lectins involved in a large number of physiological and pathophysiological processes. Little is known about the role of galectins in human UC. In this immunohistochemical exploratory study, both epithelial and inflammatory cell galectin expression were studied in patients with a thoroughly documented clinical history and were correlated with inflammatory activity. Material and Methods. Surgical whole intestinal wall colon specimens from UC patients (n = 22) and controls (n = 10) were studied. Clinical history, pharmacological treatment, and modified Mayo-score were recorded. Tissue inflammation was graded, and sections were stained with antibodies recognizing galectin-1, galectin-2, galectin-3, and galectin-4. Results. Galectin-1 was undetectable in normal and UC colonic epithelium, while galectin-2, galectin-3, and galectin-4 were strongly expressed. A tendency towards diminished epithelial expression with increased inflammatory grade for galectin-2, galectin-3, and galectin-4 was also found. In the inflammatory cells, a strong expression of galectin-2 and a weak expression of galectin-3 were seen. No clear-cut correlation between epithelial galectin expression and severity of the disease was found. Conclusion. Galectin expression in patients with UC seems to be more dependent on disease focality and individual variation than on degree of tissue inflammation.
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Muglia CI, Papa Gobbi R, Smaldini P, Orsini Delgado ML, Candia M, Zanuzzi C, Sambuelli A, Rocca A, Toscano MA, Rabinovich GA, Docena GH. Inflammation Controls Sensitivity of Human and Mouse Intestinal Epithelial Cells to Galectin-1. J Cell Physiol 2015; 231:1575-85. [DOI: 10.1002/jcp.25249] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 11/10/2015] [Indexed: 12/26/2022]
Affiliation(s)
- Cecilia I. Muglia
- Instituto de Estudios Inmunológicos y Fisiopatológicos-IIFP; Facultad de Ciencias Exactas; Universidad Nacional de La Plata y Consejo Nacional de Investigaciones Científicas y Técnicas; La Plata Argentina
| | - Rodrigo Papa Gobbi
- Instituto de Estudios Inmunológicos y Fisiopatológicos-IIFP; Facultad de Ciencias Exactas; Universidad Nacional de La Plata y Consejo Nacional de Investigaciones Científicas y Técnicas; La Plata Argentina
| | - Paola Smaldini
- Instituto de Estudios Inmunológicos y Fisiopatológicos-IIFP; Facultad de Ciencias Exactas; Universidad Nacional de La Plata y Consejo Nacional de Investigaciones Científicas y Técnicas; La Plata Argentina
| | - María Lucía Orsini Delgado
- Instituto de Estudios Inmunológicos y Fisiopatológicos-IIFP; Facultad de Ciencias Exactas; Universidad Nacional de La Plata y Consejo Nacional de Investigaciones Científicas y Técnicas; La Plata Argentina
| | - Martín Candia
- Instituto de Estudios Inmunológicos y Fisiopatológicos-IIFP; Facultad de Ciencias Exactas; Universidad Nacional de La Plata y Consejo Nacional de Investigaciones Científicas y Técnicas; La Plata Argentina
| | - Carolina Zanuzzi
- Departamento de Histología y Embriología; Facultad de Ciencias Veterinarias; Universidad Nacional de La Plata; La Plata Argentina
| | - Alicia Sambuelli
- Servicio de Enfermedades Inflamatorias; Hospital de Gastroenterología Bonorino Udaondo; Buenos Aires Argentina
| | - Andrés Rocca
- Servicio de Enfermedades Inflamatorias; Hospital de Gastroenterología Bonorino Udaondo; Buenos Aires Argentina
| | - Marta A. Toscano
- Laboratorio de Inmunopatología; Instituto de Biología y Medicina Experimental; Consejo Nacional de Investigaciones Científicas y Técnicas; Buenos Aires Argentina
| | - Gabriel A. Rabinovich
- Laboratorio de Inmunopatología; Instituto de Biología y Medicina Experimental; Consejo Nacional de Investigaciones Científicas y Técnicas; Buenos Aires Argentina
- Facultad de Ciencias Exactas y Naturales; Universidad de Buenos Aires; Buenos Aires Argentina
| | - Guillermo H. Docena
- Instituto de Estudios Inmunológicos y Fisiopatológicos-IIFP; Facultad de Ciencias Exactas; Universidad Nacional de La Plata y Consejo Nacional de Investigaciones Científicas y Técnicas; La Plata Argentina
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Timoshenko AV. Towards molecular mechanisms regulating the expression of galectins in cancer cells under microenvironmental stress conditions. Cell Mol Life Sci 2015; 72:4327-40. [PMID: 26245305 PMCID: PMC11113283 DOI: 10.1007/s00018-015-2008-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 07/12/2015] [Accepted: 07/30/2015] [Indexed: 02/07/2023]
Abstract
Galectins, a family of soluble β-galactoside-binding proteins, serve as mediators of fundamental biological processes, such as cell growth, differentiation, adhesion, migration, survival, and death. The purpose of this review is to summarize the current knowledge regarding the ways in which the expression of individual galectins differs in normal and transformed human cells exposed to various stimuli mimicking physiological and pathological microenvironmental stress conditions. A conceptual point is being made and grounded that the modulation of galectin expression profiles is a key aspect of cellular stress responses. Moreover, this modulation might be precisely regulated at transcriptional and post-transcriptional levels in the context of non-overlapping transcription factors and miRNAs specific to galectins.
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Affiliation(s)
- Alexander V Timoshenko
- Department of Biology, Western University, 1151 Richmond Street, London, ON, N6A 5B7, Canada.
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Rustiguel JK, Kumagai PS, Dias-Baruffi M, Costa-Filho AJ, Nonato MC. Recombinant expression, purification and preliminary biophysical and structural studies of C-terminal carbohydrate recognition domain from human galectin-4. Protein Expr Purif 2015; 118:39-48. [PMID: 26432949 DOI: 10.1016/j.pep.2015.09.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 09/26/2015] [Accepted: 09/26/2015] [Indexed: 01/16/2023]
Abstract
Galectin-4 (Gal4), a tandem-repeat type galectin, is expressed in healthy epithelium of the gastrointestinal tract. Altered levels of Gal4 expression are associated with different types of cancer, suggesting its usage as a diagnostic marker as well as target for drug development. The functional data available for this class of proteins suggest that the wide spectrum of cellular activities reported for Gal4 relies on distinct glycan specificity and structural characteristics of its two carbohydrate recognition domains. In the present work, two independent constructs for recombinant expression of the C-terminal domain of human galectin-4 (hGal4-CRD2) were developed. His6-tagged and untagged recombinant proteins were overexpressed in Escherichia coli, and purified by affinity chromatography followed by gel filtration. Correct folding and activity of hGal4-CRD2 were assessed by circular dichroism and fluorescence spectroscopies, respectively. Diffraction quality crystals were obtained by vapor-diffusion sitting drop setup and the crystal structure of CRD2 was solved by molecular replacement techniques at 1.78 Å resolution. Our work describes the development of important experimental tools that will allow further studies in order to correlate structure and binding properties of hGal4-CRD2 and human galectin-4 functional activities.
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Affiliation(s)
- Joane K Rustiguel
- Laboratório de Cristalografia de Proteínas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café, s/n, 14040-903 Ribeirão Preto-SP, Brazil
| | - Patricia S Kumagai
- Grupo de Biofísica Molecular Sérgio Mascarenhas, Instituto de Física de São Carlos, Universidade de São Paulo, Av. João Dagnone, 1100, 13563-120 São Carlos-SP, Brazil
| | - Marcelo Dias-Baruffi
- Laboratório de Glicoimunologia, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café, s/n, 14040-903 Ribeirão Preto-SP, Brazil
| | - Antonio J Costa-Filho
- Laboratório de Biofísica Molecular, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Av. Bandeirantes, 3900, 14040-901 Ribeirão Preto-SP, Brazil
| | - Maria Cristina Nonato
- Laboratório de Cristalografia de Proteínas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. Café, s/n, 14040-903 Ribeirão Preto-SP, Brazil.
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Cortés A, Sotillo J, Muñoz-Antoli C, Fried B, Esteban JG, Toledo R. Altered Protein Expression in the Ileum of Mice Associated with the Development of Chronic Infections with Echinostoma caproni (Trematoda). PLoS Negl Trop Dis 2015; 9:e0004082. [PMID: 26390031 PMCID: PMC4577103 DOI: 10.1371/journal.pntd.0004082] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 08/22/2015] [Indexed: 12/12/2022] Open
Abstract
Background Echinostoma caproni (Trematoda: Echinostomatidae) is an intestinal trematode that has been extensively used as experimental model to investigate the factors determining the expulsion of intestinal helminths or, in contrast, the development of chronic infections. Herein, we analyze the changes in protein expression induced by E. caproni infection in ICR mice, a host of high compatibility in which the parasites develop chronic infections. Methodology/Principal Findings To determine the changes in protein expression, a two-dimensional DIGE approach using protein extracts from the intestine of naïve and infected mice was employed; and spots showing significant differential expression were analyzed by mass spectrometry. A total of 37 spots were identified differentially expressed in infected mice (10 were found to be over-expressed and 27 down-regulated). These proteins were related to the restoration of the intestinal epithelium and the control of homeostatic dysregulation, concomitantly with mitochondrial and cytoskeletal proteins among others. Conclusion/Significance Our results suggests that changes in these processes in the ileal epithelium of ICR mice may facilitate the establishment of the parasite and the development of chronic infections. These results may serve to explain the factors determining the development of chronicity in intestinal helminth infection. Intestinal helminth infections are among the most prevalent parasitic diseases and about 1 billion people are currently infected with intestinal helminths. Incidence of intestinal helminth infections is high due to both socio-economic factors that facilitates continuous re-infections and the lack of effective vaccines. In this context, further knowledge on the host-parasite relationships is required to elucidate the factors that determine the expulsion of the intestinal helminths or, in contrast, the chronic establishment of the infections. Echinostoma caproni (Trematoda) is an intestinal trematode that has been extensively used as experimental model to investigate these factors. Depending on the host species. E. caproni is rapidly rejected or develops chronic infections. Herein, we analyze the changes in protein expression induced by E. caproni infection in a host in which the parasites develop chronic infections. These data may serve to get a better understanding of the factors determining the development of chronic intestinal infections. A total of 37 spots were identified differentially expressed. These proteins were related to the restoration of the intestinal epithelium and the control of homeostatic dysregulation, mitochondrial and cytoskeletal proteins among others. This suggests that the changes in these processes in the intestinal mucosa may facilitate the development of chronic infections.
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Affiliation(s)
- Alba Cortés
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
| | - Javier Sotillo
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
- Centre for Biodiscovery and Molecular Development of Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Queensland, Australia
| | - Carla Muñoz-Antoli
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
| | - Bernard Fried
- Department of Biology, Lafayette College, Easton, Pennsylvania, United States of America
| | - J. Guillermo Esteban
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
| | - Rafael Toledo
- Departamento de Parasitología, Facultad de Farmacia, Universidad de Valencia, Burjassot, Valencia, Spain
- * E-mail:
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Yıldırım C, Vogel DYS, Hollander MR, Baggen JM, Fontijn RD, Nieuwenhuis S, Haverkamp A, de Vries MR, Quax PHA, Garcia-Vallejo JJ, van der Laan AM, Dijkstra CD, van der Pouw Kraan TCTM, van Royen N, Horrevoets AJG. Galectin-2 induces a proinflammatory, anti-arteriogenic phenotype in monocytes and macrophages. PLoS One 2015; 10:e0124347. [PMID: 25884209 PMCID: PMC4401781 DOI: 10.1371/journal.pone.0124347] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 02/28/2015] [Indexed: 01/02/2023] Open
Abstract
Galectin-2 is a monocyte-expressed carbohydrate-binding lectin, for which increased expression is genetically determined and associated with decreased collateral arteriogenesis in obstructive coronary artery disease patients. The inhibiting effect of galectin-2 on arteriogenesis was confirmed in vivo, but the mechanism is largely unknown. In this study we aimed to explore the effects of galectin-2 on monocyte/macrophage phenotype in vitro and vivo, and to identify the receptor by which galectin-2 exerts these effects. We now show that the binding of galectin-2 to different circulating human monocyte subsets is dependent on monocyte surface expression levels of CD14. The high affinity binding is blocked by an anti-CD14 antibody but not by carbohydrates, indicating a specific protein-protein interaction. Galectin-2 binding to human monocytes modulated their transcriptome by inducing proinflammatory cytokines and inhibiting pro-arteriogenic factors, while attenuating monocyte migration. Using specific knock-out mice, we show that galectin-2 acts through the CD14/toll-like receptor (TLR)-4 pathway. Furthermore, galectin-2 skews human macrophages to a M1-like proinflammatory phenotype, characterized by a reduced motility and expression of an anti-arteriogenic cytokine/growth factor repertoire. This is accompanied by a switch in surface protein expression to CD40-high and CD206-low (M1). In a murine model we show that galectin-2 administration, known to attenuate arteriogenesis, leads to increased numbers of CD40-positive (M1) and reduced numbers of CD206-positive (M2) macrophages surrounding actively remodeling collateral arteries. In conclusion galectin-2 is the first endogenous CD14/TLR4 ligand that induces a proinflammatory, non-arteriogenic phenotype in monocytes/macrophages. Interference with CD14-Galectin-2 interaction may provide a new intervention strategy to stimulate growth of collateral arteries in genetically compromised cardiovascular patients.
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Affiliation(s)
- Cansu Yıldırım
- Dept of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Daphne Y. S. Vogel
- Dept of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | | | - Josefien M. Baggen
- Dept of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Ruud D. Fontijn
- Dept of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Sylvia Nieuwenhuis
- Dept of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Anouk Haverkamp
- Dept of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Margreet R. de Vries
- Dept of Vascular Surgery, Einthoven Laboratories, Leiden University Medical Centre, Leiden, the Netherlands
| | - Paul H. A. Quax
- Dept of Vascular Surgery, Einthoven Laboratories, Leiden University Medical Centre, Leiden, the Netherlands
| | - Juan J. Garcia-Vallejo
- Dept of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Anja M. van der Laan
- Dept of Cardiology, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Christine D. Dijkstra
- Dept of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
| | | | - Niels van Royen
- Dept of Cardiology, VU University Medical Centre, Amsterdam, the Netherlands
| | - Anton J. G. Horrevoets
- Dept of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, the Netherlands
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Cao Z, Saravanan C, Chen WS, Panjwani N. Examination of the role of galectins in cell migration and re-epithelialization of wounds. Methods Mol Biol 2015; 1207:317-326. [PMID: 25253150 DOI: 10.1007/978-1-4939-1396-1_21] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Re-epithelialization is a crucial step for wound healing. As galectins play important roles in re-epithelialization, we describe here protocols for in vivo, ex vivo and in vitro examination of the role of galectins in cell migration and in re-epithelialization of wounds. For in vivo models, mouse corneas are wounded by a variety of techniques and the rate of re-epithelialization is quantified. For ex vivo organ culture models, mouse corneas are wounded in situ, the eyes are enucleated, the eyeballs are cultured in the presence or absence of galectins and the rate of re-epithelialization is quantified. For cell cultured-based in vitro assays, we examine formation of lamellipodia and activation of focal adhesion kinase in various epithelial cells.
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Affiliation(s)
- Zhiyi Cao
- New England Eye Center and Department of Ophthalmology, Tufts University, 136 Harrison Avenue, Boston, MA, 02111, USA
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Panjwani N. Role of galectins in re-epithelialization of wounds. ANNALS OF TRANSLATIONAL MEDICINE 2014; 2:89. [PMID: 25405164 DOI: 10.3978/j.issn.2305-5839.2014.09.09] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 09/09/2014] [Indexed: 12/18/2022]
Abstract
Re-epithelialization is a critical contributing process in wound healing in the human body. When this process is compromised, impaired or delayed, serious disorders of wound healing may result that are painful, difficult to treat, and affect a variety of human tissues. Recent studies have demonstrated that members of the galectin class of β-galactoside-binding proteins modulate re-epithelialization of wounds by novel carbohydrate-based recognition systems. Galectins constitute a family of widely distributed carbohydrate-binding proteins with the affinity for the β-galactoside-containing glycans found on many cell surface and extracellular matrix (ECM) glycoproteins. There are 15 members of the mammalian galectin family that so far have been identified. Studies of the role of galectins in wound healing have revealed that galectin-3 promotes re-epithelialization of corneal, intestinal and skin wounds; galectin-7 promotes re-epithelialization of corneal, skin, kidney and uterine wounds; and galectins-2 and -4 promote re-epithelialization of intestinal wounds. Promising prospects for developing novel therapeutic strategies for the treatment of problematic, slow- or non-healing wounds are implicit in the findings that galectins stimulate the re-epithelialization of wounds of the cornea, skin, intestinal tract and kidney. Molecular mechanisms by which galectins modulate the process of wound healing are beginning to emerge and are described in this review.
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Affiliation(s)
- Noorjahan Panjwani
- New England Eye Center, Departments of Ophthalmology and Developmental, Molecular, and Chemical Biology, Tufts University School of Medicine, Boston, MA 02111, USA
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Yan W, Li J, Chai R, Guo W, Xu L, Han Y, Bai X, Wang H. Combining use of captopril and losartan attenuates the progress of Streptococcus pneumoniae-induced tympanosclerosis through the suppression of TGF-β1 expression. PLoS One 2014; 9:e111620. [PMID: 25360706 PMCID: PMC4216096 DOI: 10.1371/journal.pone.0111620] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 10/06/2014] [Indexed: 11/19/2022] Open
Abstract
Objectives In this study, using an Streptococcus pneumoniae-induced tympanosclerosis (TS) model, we explored the effects of captopril and losartan in the treatment of TS and the possible mechanisms. Study Design A prospective experimental animal study. Methods We set up the TS models in both guinea pig and wistar rat by inoculation of type-3 Streptococcus pneumoniae microorganisms and then treated the animals with the combining use of captopril and losartan. Otomicroscopy was employed to observe the development of TS. Auditory brainstem response was used to test the hearing function of animals. Hematoxylin-eosin and von Kossa staining were performed to determine the morphological changes and calcium depositions. The protein expressions of transforming growth factor β1 (TGF-β1) were assessed by western blot and immunohistochemistry staining, and the mRNA level of TGF-β1 was measured by quantitative reverse transcription- polymerase chain reaction. Results The combining use of captopril and losartan attenuated TS responses in terms of a decrease in the TS incidence and the ABR threshold, a reduction of hyalinization and calcification in the middle ear mucosa and the thickness of the mucosa. In addition, the TGF-β1 expression was decreased at both protein and mRNA levels. Conclusion Our data indicate, for the first time, that the combining use of captopril and losartan obviously attenuates TS progress through inhibiting the overexpressing of TGF-β1.
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Affiliation(s)
- Wenqing Yan
- Department of Otolaryngology Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, P.R. China
- Shandong Institute of Otolaryngology, Jinan, P.R. China
| | - Jianfeng Li
- Department of Otolaryngology Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, P.R. China
- Shandong Institute of Otolaryngology, Jinan, P.R. China
- Shandong Provincial Key Laboratory of Otology, Jinan, P.R. China
| | - Renjie Chai
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, P.R. China
| | - Wentao Guo
- Department of Otolaryngology Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, P.R. China
| | - Lei Xu
- Department of Otolaryngology Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, P.R. China
| | - Yuechen Han
- Department of Otolaryngology Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, P.R. China
| | - Xiaohui Bai
- Department of Otolaryngology Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, P.R. China
- Shandong Institute of Otolaryngology, Jinan, P.R. China
- Shandong Provincial Key Laboratory of Otology, Jinan, P.R. China
- * E-mail: (XB); (HW)
| | - Haibo Wang
- Department of Otolaryngology Head and Neck Surgery, Provincial Hospital Affiliated to Shandong University, Jinan, P.R. China
- Shandong Institute of Otolaryngology, Jinan, P.R. China
- Shandong Provincial Key Laboratory of Otology, Jinan, P.R. China
- * E-mail: (XB); (HW)
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Modulation of intestinal epithelial cell proliferation, migration, and differentiation in vitro by Astragalus polysaccharides. PLoS One 2014; 9:e106674. [PMID: 25157577 PMCID: PMC4144960 DOI: 10.1371/journal.pone.0106674] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 08/06/2014] [Indexed: 02/06/2023] Open
Abstract
Previous studies have shown that Astragalus polysaccharides (APS) can be used to treat general gastrointestinal disturbances including intestinal mucosal injury. However, the mechanism by which APS mediate this effect is unclear. In the present study, the effects of APS on proliferation, migration, and differentiation of intestinal epithelial cells (IEC-6) were assessed using an in vitro wounding model and colorimetric thiazolyl blue (MTT) assays. The effect of APS on IEC-6 cell differentiation was observed using a light microscope and scanning electron microscope, and the expression of differentiation-specific markers of IEC-6 cells, such as cytokeratin 18 (CK18), alkaline phosphatase (ALP), tight junction protein ZO-2, and sucrase-isomaltase (SI), was determined by immunofluorescence assay (IFA) and real-time PCR. In addition, APS-induced signaling pathways in IEC-6 cells were characterized. Our results indicated that APS significantly enhance migration and proliferation of IEC-6 cells in vitro. APS-treated IEC-6 cells have numerous microvilli on their apical surface and also highly express CK18, ALP, ZO-2, and SI. Moreover, APS-treated IEC-6 cells, in which the activity and expression level of ornithine decarboxylase (ODC) were significantly elevated, also exhibited an increase in cellular putrescine, whereas no significant increase in TGF-β levels was observed. These findings suggest that APS may enhance intestinal epithelial cell proliferation, migration, and differentiation in vitro by stimulating ODC gene expression and activity and putrescine production, independent of TGF-β. Exogenous administration of APS may provide a new approach for modulating intestinal epithelial wound restitution in vivo.
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Parlato M, Yeretssian G. NOD-like receptors in intestinal homeostasis and epithelial tissue repair. Int J Mol Sci 2014; 15:9594-627. [PMID: 24886810 PMCID: PMC4100112 DOI: 10.3390/ijms15069594] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 05/16/2014] [Accepted: 05/20/2014] [Indexed: 12/13/2022] Open
Abstract
The intestinal epithelium constitutes a dynamic physical barrier segregating the luminal content from the underlying mucosal tissue. Following injury, the epithelial integrity is restored by rapid migration of intestinal epithelial cells (IECs) across the denuded area in a process known as wound healing. Hence, through a sequence of events involving restitution, proliferation and differentiation of IECs the gap is resealed and homeostasis reestablished. Relapsing damage followed by healing of the inflamed mucosa is a hallmark of several intestinal disorders including inflammatory bowel diseases (IBD). While several regulatory peptides, growth factors and cytokines stimulate restitution of the epithelial layer after injury, recent evidence in the field underscores the contribution of innate immunity in controlling this process. In particular, nucleotide-binding and oligomerization domain-like receptors (NLRs) play critical roles in sensing the commensal microbiota, maintaining homeostasis, and regulating intestinal inflammation. Here, we review the process of intestinal epithelial tissue repair and we specifically focus on the impact of NLR-mediated signaling mechanisms involved in governing epithelial wound healing during disease.
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Affiliation(s)
- Marianna Parlato
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Garabet Yeretssian
- Department of Medicine, Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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Viguier M, Advedissian T, Delacour D, Poirier F, Deshayes F. Galectins in epithelial functions. Tissue Barriers 2014; 2:e29103. [PMID: 25097826 PMCID: PMC4117684 DOI: 10.4161/tisb.29103] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 05/02/2014] [Accepted: 05/02/2014] [Indexed: 02/08/2023] Open
Abstract
Galectins are a family of animal lectins comprising 15 members in vertebrates. These proteins are involved in many biological processes including epithelial homeostasis and tumor progression by displaying intracellular and extracellular activities. Hence Galectins can be found either in the cytoplasm or the nucleus, associated with membranes or in the extracellular matrix. Current studies aim at understanding the roles of Galectins in cell-cell and cell-matrix adhesion, cellular polarity and motility. This review discusses recent progress in defining the specificities and mechanisms of action of Galectins as cell regulators in epithelial cells. Physiological, cellular and molecular aspects of Galectin specificities will be treated successively.
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Affiliation(s)
- Mireille Viguier
- Institut Jacques Monod Umr 7592 Cnrs-Université Paris Diderot ; Paris, France
| | - Tamara Advedissian
- Institut Jacques Monod Umr 7592 Cnrs-Université Paris Diderot ; Paris, France
| | - Delphine Delacour
- Institut Jacques Monod Umr 7592 Cnrs-Université Paris Diderot ; Paris, France
| | - Françoise Poirier
- Institut Jacques Monod Umr 7592 Cnrs-Université Paris Diderot ; Paris, France
| | - Frédérique Deshayes
- Institut Jacques Monod Umr 7592 Cnrs-Université Paris Diderot ; Paris, France
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49
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New targets for mucosal healing and therapy in inflammatory bowel diseases. Mucosal Immunol 2014; 7:6-19. [PMID: 24084775 DOI: 10.1038/mi.2013.73] [Citation(s) in RCA: 223] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 08/16/2013] [Indexed: 02/06/2023]
Abstract
Healing of the inflamed mucosa (mucosal healing) is an emerging new goal for therapy and predicts clinical remission and resection-free survival in inflammatory bowel diseases (IBDs). The era of antitumor necrosis factor (TNF) antibody therapy was a remarkable progress in IBD therapy and anti-TNF agents led to mucosal healing in a subgroup of IBD patients; however, many patients do not respond to anti-TNF treatment highlighting the relevance of finding new targets for therapy of IBD. In particular, current studies are addressing the role of other anticytokine agents including antibodies against interleukin (IL)-6R, IL-13, and IL-12/IL-23 as well as new anti-inflammatory concepts (regulatory T cell therapy, Smad7 antisense, Jak inhibition, Toll-like receptor 9 stimulation, worm eggs). In addition, blockade of T-cell homing via the integrins α4β7 and the addressin mucosal vascular addressin cell adhesion molecule 1 (MAdCAM-1) emerges as a promising new approach for IBD therapy. Here, new approaches for achieving mucosal healing are discussed as well as their implications for future therapy of IBD.
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Belo AI, van der Sar AM, Tefsen B, van Die I. Galectin-4 Reduces Migration and Metastasis Formation of Pancreatic Cancer Cells. PLoS One 2013; 8:e65957. [PMID: 23824659 PMCID: PMC3688853 DOI: 10.1371/journal.pone.0065957] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 04/29/2013] [Indexed: 01/03/2023] Open
Abstract
Galectin-4 (Gal-4) is a member of the galectin family of glycan binding proteins that shows a significantly higher expression in cystic tumors of the human pancreas and in pancreatic adenocarcinomas compared to normal pancreas. However, the putative function of Gal-4 in tumor progression of pancreatic cancer is still incompletely understood. In this study the role of Gal-4 in cancer progression was investigated, using a set of defined pancreatic cancer cell lines, Pa-Tu-8988S (PaTu-S) and Pa-Tu-8988T (PaTu-T), as a model. These two cell lines are derived from the same liver metastasis of a human primary pancreatic adenocarcinoma, but differ in their growth characteristics and metastatic capacity. We demonstrated that Gal-4 expression is high in PaTu-S, which shows poor migratory properties, whereas much lower Gal-4 levels are observed in the highly metastatic cell line PaTu-T. In PaTu-S, Gal-4 is found in the cytoplasm, but it is also secreted and accumulates at the membrane at sites of contact with neighboring cells. Moreover, we show that Gal-4 inhibits metastasis formation by delaying migration of pancreatic cancer cells in vitro using a scratch assay, and in vivo using zebrafish (Danio rerio) as an experimental model. Our data suggest that Gal-4 may act at the cell-surface of PaTu-S as an adhesion molecule to prevent release of the tumor cells, but has in addition a cytosolic function by inhibiting migration via a yet unknown mechanism.
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Affiliation(s)
- Ana I. Belo
- Department of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, The Netherlands
| | - Astrid M. van der Sar
- Department of Medical Microbiology and Infection control, VU University Medical Centre, Amsterdam, The Netherlands
| | - Boris Tefsen
- Department of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, The Netherlands
| | - Irma van Die
- Department of Molecular Cell Biology and Immunology, VU University Medical Centre, Amsterdam, The Netherlands
- * E-mail:
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