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Hong D, Kim HK, Yang W, Yoon C, Kim M, Yang CS, Yoon S. Integrative analysis of single-cell RNA-seq and gut microbiome metabarcoding data elucidates macrophage dysfunction in mice with DSS-induced ulcerative colitis. Commun Biol 2024; 7:731. [PMID: 38879692 PMCID: PMC11180211 DOI: 10.1038/s42003-024-06409-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 06/03/2024] [Indexed: 06/19/2024] Open
Abstract
Ulcerative colitis (UC) is a significant inflammatory bowel disease caused by an abnormal immune response to gut microbes. However, there are still gaps in our understanding of how immune and metabolic changes specifically contribute to this disease. Our research aims to address this gap by examining mouse colons after inducing ulcerative colitis-like symptoms. Employing single-cell RNA-seq and 16 s rRNA amplicon sequencing to analyze distinct cell clusters and microbiomes in the mouse colon at different time points after induction with dextran sodium sulfate. We observe a significant reduction in epithelial populations during acute colitis, indicating tissue damage, with a partial recovery observed in chronic inflammation. Analyses of cell-cell interactions demonstrate shifts in networking patterns among different cell types during disease progression. Notably, macrophage phenotypes exhibit diversity, with a pronounced polarization towards the pro-inflammatory M1 phenotype in chronic conditions, suggesting the role of macrophage heterogeneity in disease severity. Increased expression of Nampt and NOX2 complex subunits in chronic UC macrophages contributes to the inflammatory processes. The chronic UC microbiome exhibits reduced taxonomic diversity compared to healthy conditions and acute UC. The study also highlights the role of T cell differentiation in the context of dysbiosis and its implications in colitis progression, emphasizing the need for targeted interventions to modulate the inflammatory response and immune balance in colitis.
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Affiliation(s)
- Dawon Hong
- RNA Cell Biology Laboratory, Graduate Department of Bioconvergence Engineering, Dankook University, Yongin, Republic of Korea
| | - Hyo Keun Kim
- Dept of Molecular and Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan-si, Korea
| | - Wonhee Yang
- Department of AI-based Convergence, Dankook University, Yongin, Republic of Korea
| | - Chanjin Yoon
- Dept of Molecular and Life Science and Institute of Natural Science and Technology, Hanyang University, Ansan-si, Korea
| | - Minsoo Kim
- Department of Computer Science, College of SW Convergence, Dankook University, Yongin, Republic of Korea
| | - Chul-Su Yang
- Dept of Medicinal and Life Science and Center for Bionano Intelligence Education and Research, Hanyang University, Ansan-si, Korea.
| | - Seokhyun Yoon
- Department of Electronics & Electrical Engineering, College of Engineering, Dankook University, Yongin, Republic of Korea.
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Li H, Li H, Stanton C, Ross RP, Zhao J, Chen W, Yang B. Alleviative effects of exopolysaccharides from Limosilactobacillus mucosae CCFM1273 against ulcerative colitis via modulation of gut microbiota and inhibition of Fas/Fasl and TLR4/NF-κB pathways. Int J Biol Macromol 2024; 260:129346. [PMID: 38242402 DOI: 10.1016/j.ijbiomac.2024.129346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 12/28/2023] [Accepted: 01/07/2024] [Indexed: 01/21/2024]
Abstract
Ulcerative colitis (UC) has become a public health challenge as its global prevalence increases annually. The use of prebiotics in healthcare has grown in recent years. Thus, the present study was designed to explore the alleviating effects and mechanisms of exopolysaccharides (EPS) produced by Limosilactobacillus mucosae CCFM1273 on UC. The results indicated that CCFM1273 EPS mitigated the disease symptoms and colonic pathologic damage in DSS-induced colitis mice. Moreover, CCFM1273 EPS improved the intestinal barrier by restoring goblet cell numbers and MUC2 production, enhancing intercellular junctions, and inhibiting epithelial cell apoptosis. In addition, CCFM1273 EPS inhibited colonic inflammation and oxidative stress. Importantly, CCFM1273 EPS augmented short-chain fatty acid (SCFA) producers, leading to increased levels of SCFAs (especially propionic acid), which inhibited the Fas/Fasl pathway and consequently inhibited epithelial apoptosis, and diminished Gram-negative bacteria, further decreasing lipopolysaccharides (LPS), which suppressed the TLR4/NF-κB pathway and consequently suppressed colonic inflammation, eventually relieving UC in mice. This study provides theoretical support for the use of prebiotics in clinical practice for UC.
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Affiliation(s)
- Huizhen Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Haitao Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.
| | - Catherine Stanton
- International Joint Research Center for Probiotics & Gut Health, Jiangnan University, Wuxi, Jiangsu, China; APC Microbiome Ireland, University College Cork, Cork, Ireland; Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland
| | - R Paul Ross
- International Joint Research Center for Probiotics & Gut Health, Jiangnan University, Wuxi, Jiangsu, China; APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu, China
| | - Bo Yang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China; International Joint Research Center for Probiotics & Gut Health, Jiangnan University, Wuxi, Jiangsu, China.
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3
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Nakai D, Miyake M. Intestinal Membrane Function in Inflammatory Bowel Disease. Pharmaceutics 2023; 16:29. [PMID: 38258040 PMCID: PMC10820082 DOI: 10.3390/pharmaceutics16010029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
Inflammatory bowel disease is a set of chronic inflammatory diseases that mainly develop in the gastrointestinal mucosa, including ulcerative colitis and Crohn's disease. Gastrointestinal membrane permeability is an important factor influencing the pharmacological effects of pharmaceuticals administered orally for treating inflammatory bowel disease and other diseases. Understanding the presence or absence of changes in pharmacokinetic properties under a disease state facilitates effective pharmacotherapy. In this paper, we reviewed the gastrointestinal membrane function in ulcerative colitis and Crohn's disease from the perspective of in vitro membrane permeability and electrophysiological parameters. Information on in vivo permeability in humans is summarized. We also overviewed the inflammatory bowel disease research using gut-on-a-chip, in which some advances have recently been achieved. It is expected that these findings will be exploited for the development of therapeutic drugs for inflammatory bowel disease and the optimization of treatment options and regimens.
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Affiliation(s)
- Daisuke Nakai
- Drug Metabolism & Pharmacokinetics Research Laboratory, Daiichi Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
| | - Masateru Miyake
- Pharmapack Co., Ltd., 1-27 Nakaokubo, Toyama 939-2243, Japan;
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Chen C, Beloqui A, Xu Y. Oral nanomedicine biointeractions in the gastrointestinal tract in health and disease. Adv Drug Deliv Rev 2023; 203:115117. [PMID: 37898337 DOI: 10.1016/j.addr.2023.115117] [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] [Received: 08/25/2023] [Revised: 10/03/2023] [Accepted: 10/21/2023] [Indexed: 10/30/2023]
Abstract
Oral administration is the preferred route of administration based on the convenience for and compliance of the patient. Oral nanomedicines have been developed to overcome the limitations of free drugs and overcome gastrointestinal (GI) barriers, which are heterogeneous across healthy and diseased populations. This review aims to provide a comprehensive overview and comparison of the oral nanomedicine biointeractions in the gastrointestinal tract (GIT) in health and disease (GI and extra-GI diseases) and highlight emerging strategies that exploit these differences for oral nanomedicine-based treatment. We introduce the key GI barriers related to oral delivery and summarize their pathological changes in various diseases. We discuss nanomedicine biointeractions in the GIT in health by describing the general biointeractions based on the type of oral nanomedicine and advanced biointeractions facilitated by advanced strategies applied in this field. We then discuss nanomedicine biointeractions in different diseases and explore how pathological characteristics have been harnessed to advance the development of oral nanomedicine.
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Affiliation(s)
- Cheng Chen
- UCLouvain, Université catholique de Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200 Brussels, Belgium
| | - Ana Beloqui
- UCLouvain, Université catholique de Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200 Brussels, Belgium; WEL Research Institute, avenue Pasteur, 6, 1300 Wavre, Belgium.
| | - Yining Xu
- Department of Pharmacy, Institute of Metabolic Diseases and Pharmacotherapy, West China Hospital, Sichuan University, Chengdu 610041, China; Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Department of Clinical Pharmacy and Pharmacy Administration, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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Prame Kumar K, Ooi JD, Goldberg R. The interplay between the microbiota, diet and T regulatory cells in the preservation of the gut barrier in inflammatory bowel disease. Front Microbiol 2023; 14:1291724. [PMID: 38107848 PMCID: PMC10722198 DOI: 10.3389/fmicb.2023.1291724] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 11/06/2023] [Indexed: 12/19/2023] Open
Abstract
Inflammatory bowel disease (IBD) is becoming more common in the Western world due to changes in diet-related microbial dysbiosis, genetics and lifestyle. Incidences of gut permeability can predate IBD and continued gut barrier disruptions increase the exposure of bacterial antigens to the immune system thereby perpetuating chronic inflammation. Currently, most of the approved IBD therapies target individual pro-inflammatory cytokines and pathways. However, they fail in approximately 50% of patients due to their inability to overcome the redundant pro inflammatory immune responses. There is increasing interest in the therapeutic potential of T regulatory cells (Tregs) in inflammatory conditions due to their widespread capability to dampen inflammation, promote tolerance of intestinal bacteria, facilitate healing of the mucosal barrier and ability to be engineered for more targeted therapy. Intestinal Treg populations are inherently shaped by dietary molecules and gut microbiota-derived metabolites. Thus, understanding how these molecules influence Treg-mediated preservation of the intestinal barrier will provide insights into immune tolerance-mediated mucosal homeostasis. This review comprehensively explores the interplay between diet, gut microbiota, and immune system in influencing the intestinal barrier function to attenuate the progression of colitis.
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Affiliation(s)
- Kathryn Prame Kumar
- Centre for Inflammatory Diseases, Department of Medicine, School of Clinical Sciences at Monash Health, Monash Medical Centre, Monash University, Clayton, VIC, Australia
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Lian YZ, Liu YC, Chang CC, Nochi T, Chao JCJ. Combined Lycium barbarum Polysaccharides with Plasmon-Activated Water Affect IFN-γ/TNF-α Induced Inflammation in Caco-2 Cells. Pharmaceuticals (Basel) 2023; 16:1455. [PMID: 37895926 PMCID: PMC10610401 DOI: 10.3390/ph16101455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
The effects of Lycium barbarum polysaccharides (LBP) and plasmon-activated water (PAW) against IFN-γ/TNF-α induced inflammation in human colon Caco-2 cells were investigated. Cells were divided into the control, induction, LBP treatment (100-500 μg/mL), and combination groups with PAW. Inflammation was induced 24 h with 10 ng/mL IFN-γ when cell confluency reached >90%, and various doses of LBP with or without PAW were treated for 3 h, and subsequently 50 ng/mL TNF-α was added for another 24 h to provoke inflammation. Combination of LBP with PAW significantly decreased the secretion of IL-6 and IL-8. Cyclooxygenase-2 and inducible NO synthase expression was attenuated in all LBP-treated groups with or without PAW. NLRP3 inflammasome and related protein PYCARD expression were inhibited by LBP at the highest dose (500 μg/mL). All doses of LBP alone significantly decreased p-ERK expression, but combination with PAW increased p-ERK expression compared to those without PAW. Additionally, 250 and 500 μg/mL of LBP with or without PAW inhibited procaspase-3/caspase-3 expression. Therefore, LBP possesses anti-inflammation and anti-apoptosis by inhibiting the secretion of inflammatory cytokines and the expression of NLRP3 inflammasome-related protein. The combination with PAW exerts additive or synergistic effect on anti-inflammation.
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Affiliation(s)
- Yu Zhi Lian
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110301, Taiwan;
| | - Yu-Chuan Liu
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, Taipei Medical University, Taipei 110301, Taiwan;
- Cell Physiology and Molecular Image Research Center, Taipei Municipal Wan Fang Hospital, Taipei Medical University, Taipei 110301, Taiwan
| | - Chun-Chao Chang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 110301, Taiwan;
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, Taipei Medical University, Taipei 110301, Taiwan
- TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei 110301, Taiwan
| | - Tomonori Nochi
- Laboratory of Functional Morphology, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8577, Japan;
- International Education and Research Center for Food and Agricultural Immunology, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8577, Japan
| | - Jane C.-J. Chao
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110301, Taiwan;
- TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei 110301, Taiwan
- Master Program in Global Health and Health Security, Taipei Medical University, Taipei 110301, Taiwan
- Nutrition Research Center, Taipei Medical University Hospital, Taipei 110301, Taiwan
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Rath T, Atreya R, Bodenschatz J, Uter W, Geppert CI, Vitali F, Zundler S, Waldner MJ, Hartmann A, Neurath MF. Healing of the epithelial barrier in the ileum is superior to endoscopic and histologic remission for predicting major adverse outcomes in ulcerative colitis. Front Med (Lausanne) 2023; 10:1221449. [PMID: 37881628 PMCID: PMC10595008 DOI: 10.3389/fmed.2023.1221449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 08/09/2023] [Indexed: 10/27/2023] Open
Abstract
Background Achieving endoscopic remission is a key therapeutic goal in patients with ulcerative colitis (UC) that is associated with favorable long-term disease outcomes. Here, we prospectively compared the predictive value of endoscopic and/or histologic remission against ileal barrier healing for predicting long-term disease behavior in a large cohort of UC patients in clinical remission. Methods At baseline, UC patients in clinical remission underwent ileocolonoscopy with assessment of ileal barrier function by confocal endomicroscopy. Endoscopic and histologic disease activity and ileal barrier healing were scored using validated scores. During subsequent follow-up (FU), patients were closely monitored for clinical disease activity and occurrence of major adverse outcomes (MAO) defined as the following: disease relapse; UC-related hospitalization; UC-related surgery; necessity for initiation or dose escalation of systemic steroids, immunosuppressants, small molecules or biological therapy. Results Of the 73 UC patients included, 67% experienced MAO during a mean FU of 25 months. The probability of MAO-free survival was significantly higher in UC patients with endoscopic and/or histologic remission compared to patients with endoscopically and/or histologically active disease. Ileal barrier healing on endomicroscopy was highly accurate for predicting the further course of UC and outcompeted endoscopic and histologic remission for predicting MAO-free survival. Conclusion Ileal barrier healing in clinically remittent UC patients can accurately predict future MAO development and is superior in its predictive capabilities than endoscopic and histologic remission. Ileal barrier healing therefore represents a novel and superior surrogate parameter for stratification of UC patients according to their risk for development of complicated disease behavior. Clinical trial registration https://classic.clinicaltrials.gov/ct2/show/NCT05157750, identifier NCT05157750.
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Affiliation(s)
- Timo Rath
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Raja Atreya
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Julia Bodenschatz
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Wolfgang Uter
- Institute for Medical Informatics, Biometry and Epidemiology, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Carol I. Geppert
- Institute for Pathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Francesco Vitali
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Sebastian Zundler
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Maximilian J. Waldner
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Arndt Hartmann
- Institute for Pathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Markus F. Neurath
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie DZI, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
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8
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Le Berre C, Honap S, Peyrin-Biroulet L. Ulcerative colitis. Lancet 2023; 402:571-584. [PMID: 37573077 DOI: 10.1016/s0140-6736(23)00966-2] [Citation(s) in RCA: 108] [Impact Index Per Article: 108.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/03/2023] [Accepted: 05/08/2023] [Indexed: 08/14/2023]
Abstract
Ulcerative colitis is a lifelong inflammatory disease affecting the rectum and colon to a variable extent. In 2023, the prevalence of ulcerative colitis was estimated to be 5 million cases around the world, and the incidence is increasing worldwide. Ulcerative colitis is thought to occur in people with a genetic predisposition following environmental exposures; gut epithelial barrier defects, the microbiota, and a dysregulated immune response are strongly implicated. Patients usually present with bloody diarrhoea, and the diagnosis is based on a combination of clinical, biological, endoscopic, and histological findings. The aim of medical management is, first, to induce a rapid clinical response and normalise biomarkers and, second, to maintain clinical remission and reach endoscopic normalisation to prevent long-term disability. Treatments for inducing remission include 5-aminosalicylic acid drugs and corticosteroids. Maintenance treatments include 5-aminosalicylic acid drugs, thiopurines, biologics (eg, anti-cytokines and anti-integrins), and small molecules (Janus kinase inhibitors and sphingosine-1-phosphate receptor modulators). Although the therapeutic options are expanding, 10-20% of patients still require proctocolectomy for medically refractory disease. The keys to breaking through this therapeutic ceiling might be the combination of therapeutics with precision and personalised medicine.
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Affiliation(s)
- Catherine Le Berre
- Institut des Maladies de l'Appareil Digestif, Hépato-Gastro-Entérologie et Assistance Nutritionnelle, Inserm CIC 1413, Inserm UMR 1235, Nantes Université, CHU Nantes, Nantes, France
| | - Sailish Honap
- Department of Gastroenterology, St George's University Hospitals NHS Foundation Trust, London, UK; School of Immunology and Microbial Sciences, King's College London, London UK
| | - Laurent Peyrin-Biroulet
- Department of Gastroenterology, INFINY Institute, FHU-CURE, INSERM NGERE, Nancy University Hospital, Vandœuvre-lès-Nancy, France; Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, QC, Canada.
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Rath T, Atreya R, Neurath MF. A spotlight on intestinal permeability and inflammatory bowel diseases. Expert Rev Gastroenterol Hepatol 2023; 17:893-902. [PMID: 37606514 DOI: 10.1080/17474124.2023.2242772] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 07/27/2023] [Indexed: 08/23/2023]
Abstract
INTRODUCTION The intestinal barrier is a multi-faced structure lining the surface of the intestinal mucosa of the GI tract. To exert its main functions as a physical and immunological defense barrier, several components of the intestinal barrier act in a concerted and cooperative manner. AREAS COVERED Herein, we first introduce to the basic organization of the intestinal barrier and then summarize different methods to assess barrier function in and ex vivo. Finally, we provide an in-depth overview of the relevance of intestinal barrier dysfunction in inflammatory bowel diseases. EXPERT OPINION In parallel to a more fundamental understanding of the intestinal barrier as a key component for intestinal integrity is the notion that intestinal barrier defects are associated with a variety of diseases such as inflammatory bowel diseases. Recent research has fueled and perpetuated the concept that barrier defects are critical components of disease development, disease behavior, and potentially also an area of therapeutic intervention in IBD patients. Although being far away from standard, new technologies can be used to easily assess barrier healing in IBD and to derive clinical consequences from these findings such as more accurate forecasting of future disease behavior or the identification of novel therapeutic targets.
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Affiliation(s)
- Timo Rath
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Raja Atreya
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Markus F Neurath
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
- Deutsches Zentrum Für Immuntherapie DZI, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
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Bovari-Biri J, Garai K, Banfai K, Csongei V, Pongracz JE. miRNAs as Predictors of Barrier Integrity. BIOSENSORS 2023; 13:bios13040422. [PMID: 37185497 PMCID: PMC10136429 DOI: 10.3390/bios13040422] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/16/2023] [Accepted: 03/21/2023] [Indexed: 05/17/2023]
Abstract
The human body has several barriers that protect its integrity and shield it from mechanical, chemical, and microbial harm. The various barriers include the skin, intestinal and respiratory epithelia, blood-brain barrier (BBB), and immune system. In the present review, the focus is on the physical barriers that are formed by cell layers. The barrier function is influenced by the molecular microenvironment of the cells forming the barriers. The integrity of the barrier cell layers is maintained by the intricate balance of protein expression that is partly regulated by microRNAs (miRNAs) both in the intracellular space and the extracellular microenvironment. The detection of changes in miRNA patterns has become a major focus of diagnostic, prognostic, and disease progression, as well as therapy-response, markers using a great variety of detection systems in recent years. In the present review, we highlight the importance of liquid biopsies in assessing barrier integrity and challenges in differential miRNA detection.
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Affiliation(s)
- Judit Bovari-Biri
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pecs, 2 Rokus Str, H-7624 Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, 20 Ifjusag Str, H-7624 Pecs, Hungary
| | - Kitti Garai
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pecs, 2 Rokus Str, H-7624 Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, 20 Ifjusag Str, H-7624 Pecs, Hungary
| | - Krisztina Banfai
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pecs, 2 Rokus Str, H-7624 Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, 20 Ifjusag Str, H-7624 Pecs, Hungary
| | - Veronika Csongei
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pecs, 2 Rokus Str, H-7624 Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, 20 Ifjusag Str, H-7624 Pecs, Hungary
| | - Judit E Pongracz
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pecs, 2 Rokus Str, H-7624 Pecs, Hungary
- Szentagothai Research Centre, University of Pecs, 20 Ifjusag Str, H-7624 Pecs, Hungary
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Algieri F, Tanaskovic N, Rincon CC, Notario E, Braga D, Pesole G, Rusconi R, Penna G, Rescigno M. Lactobacillus paracasei CNCM I-5220-derived postbiotic protects from the leaky-gut. Front Microbiol 2023; 14:1157164. [PMID: 37020718 PMCID: PMC10067918 DOI: 10.3389/fmicb.2023.1157164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 02/27/2023] [Indexed: 03/22/2023] Open
Abstract
The maintenance of intestinal barrier function is essential for preventing different pathologies, such as the leaky gut syndrome (LGS), which is characterized by the passage of harmful agents, like bacteria, toxins, and viruses, into the bloodstream. Intestinal barrier integrity is controlled by several players, including the gut microbiota. Various molecules, called postbiotics, are released during the natural metabolic activity of the microbiota. Postbiotics can regulate host–microbe interactions, epithelial homeostasis, and have overall benefits for our health. In this work, we used in vitro and in vivo systems to demonstrate the role of Lactobacillus paracasei CNCM I-5220-derived postbiotic (LP-PBF) in preserving intestinal barrier integrity. We demonstrated in vitro that LP-PBF restored the morphology of tight junctions (TJs) that were altered upon Salmonella typhimurium exposure. In vivo, LP-PBF protected the gut vascular barrier and blocked S. typhimurium dissemination into the bloodstream. Interestingly, we found that LP-PBF interacts not only with the host cells, but also directly with S. typhimurium blocking its biofilm formation, partially due to the presence of biosurfactants. This study highlights that LP-PBF is beneficial in maintaining gut homeostasis due to the synergistic effect of its different components. These results suggest that LP-PBF could be utilized in managing several pathologies displaying an impaired intestinal barrier function.
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Affiliation(s)
| | | | | | - Elisabetta Notario
- Department of Bioscience, Biotechnologies and Environment – DBBA, University of Bari Aldo Moro, Bari, Italy
| | | | - Graziano Pesole
- Department of Bioscience, Biotechnologies and Environment – DBBA, University of Bari Aldo Moro, Bari, Italy
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, Consiglio Nazionale delle Ricerche, Bari, Italy
| | - Roberto Rusconi
- IRCCS Humanitas Research Hospital, Rozzano, Italy
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
| | - Giuseppe Penna
- Postbiotica S.r.l., Milan, Italy
- IRCCS Humanitas Research Hospital, Rozzano, Italy
| | - Maria Rescigno
- IRCCS Humanitas Research Hospital, Rozzano, Italy
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
- *Correspondence: Maria Rescigno,
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da Silva Watanabe P, Cavichioli AM, D'Arc de Lima Mendes J, Aktar R, Peiris M, Blackshaw LA, de Almeida Araújo EJ. Colonic motility adjustments in acute and chronic DSS-induced colitis. Life Sci 2023; 321:121642. [PMID: 36990176 DOI: 10.1016/j.lfs.2023.121642] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/21/2023] [Accepted: 03/25/2023] [Indexed: 03/30/2023]
Abstract
AIMS Inflammatory bowel disease is recurrent inflammation that affects the gastrointestinal tract causing changes in intestinal motility. The evolution of these changes is not completely understood. The aim of this study was to evaluate anatomical and functional changes in the colon during the development of acute and chronic DSS-induced ulcerative colitis (UC) in C57Bl/6 mice. MATERIALS AND METHODS Mice were relocated into 5 groups: control (GC) and groups exposed to DSS 3 % for 2 (DSS2d), 5 (DSS5d) and 7 DSS7d) days (acute UC) or 3 cycles (DSS3C; Chronic UC). Mice were monitored daily. After euthanasia, colonic tissue was assessed with histological, immunofluorescence and colon manometry methods. KEY FINDINGS Ulcerative Colitis is a chronic disease characterized by overt inflammation of the colon. Here we investigate whether the morphological changes caused by UC in the colonic wall, in tuft cells and in enteric neurons also promote any alteration in colonic motility patterns. UC Promotes thickening in the colonic wall, fibrosis, reduction in the number of tuft cells and consequently goblet cells also, without promoting neuronal death however there is a change in the chemical code of myenteric neurons. All of these morphological changes were responsible for causing a change in colonic contractions, colonic migration motor complex, total time of gastrointestinal transit and therefore promoting dysmotility. Further studies stimulating a hyperplasia of tuft cells may be the way to try to keep the colonic epithelium healthy, reducing the damage caused by UC. SIGNIFICANCE Increasing disease pathology of DSS-induced UC induces structural and neuroanatomical changes and driven damage to cholinergic neurons causes colonic dysmotility, including increase of cholinergic myenteric neurons, followed by variations in the motility pattern of different regions of the colon that taking together characterize colonic dysmotility.
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13
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The Protective Role of Scorias spongiosa Polysaccharide-Based Microcapsules on Intestinal Barrier Integrity in DSS-Induced Colitis in Mice. Foods 2023; 12:foods12030669. [PMID: 36766197 PMCID: PMC9914818 DOI: 10.3390/foods12030669] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/29/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Scorias spongiosa, a type of edible fungus, is beneficial for intestinal health. However, the mechanisms by which polysaccharides derived from S. spongiosa contribute to the integrity of the intestinal barrier have been little investigated. In the present study, 40 C57BL/6J mice were assigned into five groups: (1) Normal; (2) Dextran sulfate sodium (DSS)Administration; (3) DSS + Uncapped polysaccharides; (4) DSS + Low microcapsules; (5) DSS + High microcapsules. After one week of administration of S. spongiosa polysaccharides, all mice, excluding the Normal group, had free access to the drinking water of 3.5% DSS for seven days. Serum and feces were then taken for analysis. Scanning electron microscopy analysis indicated the structure of the micro-capped polysaccharides with curcumin was completed with a rough surface, which differs from the uncapped polysaccharides. Noticeably, S. spongiosa polysaccharides enhanced intestinal barrier integrity as evidenced by increasing the protein levels of Claudin-1, ZO-1 and ZO-2. Low-capped polysaccharides mitigated the DSS-induced oxidative stress by increasing catalase (CAT) concentration and decreasing malondialdehyde (MDA) and myeloperoxidase (MPO) concentrations. Besides, DSS treatment caused a disturbance of inflammation and the contents of IL-1β, IL-6, TNF-α and CRP were downregulated and the contents of IL-4, IL-10 and IFN-γ were upregulated by S. spongiosa polysaccharides. Research on the potential mechanisms indicated that S. spongiosa polysaccharides inhibited the DSS-triggered activation of NF-κB signaling. Moreover, the JAK/STAT1 and MAPK pathways were suppressed by S. spongiosa polysaccharides in DSS-challenged mice, with Lcap showing the strongest efficacy. 16S rDNA amplicon sequencing revealed that the richness and diversity of the microbial community were reshaped by S. spongiosa polysaccharide ingestion. Therefore, our study substantiated that S. spongiosa polysaccharides exhibited protective effects against colitis mice by reshaping the intestinal microbiome and maintaining the balance of intestinal barrier integrity, antioxidant capacity and colonic inflammation through regulation of the NF-κB-STAT1-MAPK axis.
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14
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Rath T, Atreya R, Bodenschatz J, Uter W, Geppert CE, Vitali F, Fischer S, Waldner MJ, Colombel JF, Hartmann A, Neurath MF. Intestinal Barrier Healing Is Superior to Endoscopic and Histologic Remission for Predicting Major Adverse Outcomes in Inflammatory Bowel Disease: The Prospective ERIca Trial. Gastroenterology 2023; 164:241-255. [PMID: 36279923 DOI: 10.1053/j.gastro.2022.10.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 10/11/2022] [Accepted: 10/13/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND & AIMS Endoscopic and histologic remission have emerged as key therapeutic goals in the management of inflammatory bowel diseases (IBD) that are associated with favorable long-term disease outcomes. Here, we prospectively compared the predictive value of barrier healing with endoscopic and histologic remission for predicting long-term disease behavior in a large cohort of patients with IBD in clinical remission. METHODS At baseline, patients with IBD in clinical remission underwent ileocolonoscopy with assessment of intestinal barrier function by confocal endomicroscopy. Endoscopic and histologic disease activity, as well as barrier healing, was prospectively assessed along established scores. During subsequent follow-up, patients were closely monitored for clinical disease activity and the occurrence of major adverse outcomes (MAOs): disease flares, IBD-related hospitalization or surgery, and initiation or dose escalation of systemic steroids, immunosuppressants, small molecules, or biological therapy. RESULTS The final analysis included 181 patients, 100 with Crohn's disease [CD] and 81 with ulcerative colitis (UC). During a mean follow-up of 35 (CD) and 25 (UC) months, 73% of patients with CD and 69% of patients with UC experienced at least 1 MAO. The probability of MAO-free survival was significantly higher in patients with IBD with endoscopic remission compared with endoscopically active disease. In addition, histologic remission predicted MAO-free survival in patients with UC but not CD. Barrier healing on endomicroscopy was superior to endoscopic and histologic remission for predicting MAO-free survival in both UC and CD. CONCLUSIONS Barrier healing is associated with decreased risk of disease progression in patients with clinically remittent IBD, with superior predictive performance compared with endoscopic and histologic remission. Analysis of barrier function might be considered as a future treatment target in clinical trials. CLINICALTRIALS gov number, NCT05157750.
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Affiliation(s)
- Timo Rath
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Medical Clinic 1, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Raja Atreya
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Medical Clinic 1, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Julia Bodenschatz
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Medical Clinic 1, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Wolfgang Uter
- Department of Medical Informatics, Biometry and Epidemiology, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Carol E Geppert
- Institute for Pathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Francesco Vitali
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Medical Clinic 1, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Sarah Fischer
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Medical Clinic 1, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Maximilian J Waldner
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Medical Clinic 1, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Jean-Frédéric Colombel
- Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Arndt Hartmann
- Institute for Pathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany
| | - Markus F Neurath
- Department of Gastroenterology, Ludwig Demling Endoscopy Center of Excellence, University Hospital Erlangen, Medical Clinic 1, Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany; Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander University Erlangen-Nuernberg, Erlangen, Germany.
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15
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Rothschild-Rodriguez D, Hedges M, Kaplan M, Karav S, Nobrega FL. Phage-encoded carbohydrate-interacting proteins in the human gut. Front Microbiol 2023; 13:1083208. [PMID: 36687636 PMCID: PMC9853417 DOI: 10.3389/fmicb.2022.1083208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/14/2022] [Indexed: 01/09/2023] Open
Abstract
In the human gastrointestinal tract, the gut mucosa and the bacterial component of the microbiota interact and modulate each other to accomplish a variety of critical functions. These include digestion aid, maintenance of the mucosal barrier, immune regulation, and production of vitamins, hormones, and other metabolites that are important for our health. The mucus lining of the gut is primarily composed of mucins, large glycosylated proteins with glycosylation patterns that vary depending on factors including location in the digestive tract and the local microbial population. Many gut bacteria have evolved to reside within the mucus layer and thus encode mucus-adhering and -degrading proteins. By doing so, they can influence the integrity of the mucus barrier and therefore promote either health maintenance or the onset and progression of some diseases. The viral members of the gut - mostly composed of bacteriophages - have also been shown to have mucus-interacting capabilities, but their mechanisms and effects remain largely unexplored. In this review, we discuss the role of bacteriophages in influencing mucosal integrity, indirectly via interactions with other members of the gut microbiota, or directly with the gut mucus via phage-encoded carbohydrate-interacting proteins. We additionally discuss how these phage-mucus interactions may influence health and disease states.
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Affiliation(s)
| | - Morgen Hedges
- School of Biological Sciences, University of Southampton, Southampton, United Kingdom
| | - Merve Kaplan
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Sercan Karav
- Department of Molecular Biology and Genetics, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Franklin L. Nobrega
- School of Biological Sciences, University of Southampton, Southampton, United Kingdom,*Correspondence: Franklin L. Nobrega, ✉
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16
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Zhou F, Chen L, Xu S, Si C, Li N, Dong H, Zheng P, Wang W. Upregulation of miR-151-5p promotes the apoptosis of intestinal epithelial cells by targeting brain-derived neurotrophic factor in ulcerative colitis mice. Cell Cycle 2022; 21:2615-2626. [PMID: 35938703 PMCID: PMC9704397 DOI: 10.1080/15384101.2022.2105905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 06/14/2022] [Accepted: 07/19/2022] [Indexed: 01/09/2023] Open
Abstract
Ulcerative colitis (UC) is the most prevalent form of chronic inflammatory bowel disease, the etiology of which is poorly understood. This study investigated the role of miR-151-5p on UC and explored the role of brain-derived neurotrophic factor (BDNF) in a UC mouse model and cell model. A UC mouse model was engineered by dextran sulfate sodium (DSS) induction. Primary mouse intestinal epithelial cells (IECs) were isolated. Colitis mice were intraperitoneally injected with miR-151-5p antagomir and antagomir negative control, and weight loss, disease activity index, and colon length of mice were measured. Colon tissues of mice were histologically analyzed. A UC cell model was constructed by treating MODE-K cells with DSS. miR-151-5p expression in the cell model was modulated by transfection. The exogenous BDNF effect on the UC cell model and intestinal cell apoptosis, viability and proliferation was detected by flow cytometry, CCK-8 and EdU experiment. The expression of miR-151-5p and apoptosis-related proteins was assessed through q-PCR and western blotting. miR-151-5p was upregulated in the colon tissues and primary IECs of colitis mice. miR-151-5p directly inhibited the expression of BNDF. miR-151-5p upregulation promoted apoptosis in UC MODE-K cells. miR-151-5p upregulation repressed the viability of UC MODE-K cells. Exogenous BNDF treatment reversed the effect of miR-151-5p on UC MODE-K cells. miR-151-5p knockdown improved UC symptoms in mice, including alleviating weight loss, reducing disease activity index and improving colon length and damaged colon tissues. miR-151-5p contributed to intestinal epithelial cells apoptosis in colitis mice via inhibiting BNDF expression.
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Affiliation(s)
- Feng Zhou
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Lipeng Chen
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Shan Xu
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Caijuan Si
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Nan Li
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Hui Dong
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Peifen Zheng
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
| | - Weifeng Wang
- Department of gastroenterology, Zhejiang Hospital, Hangzhou, Zhejiang, P.R. China
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17
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Gerdin L, González‐Castro AM, Ericson A, Persborn M, Santos J, Walter SA, Keita ÅV, Vicario M, Söderholm JD. Acute psychological stress increases paracellular permeability and modulates immune activity in rectal mucosa of healthy volunteers. United European Gastroenterol J 2022; 11:31-41. [PMID: 36314901 PMCID: PMC9892435 DOI: 10.1002/ueg2.12329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 10/11/2022] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Psychological stress and increased permeability are implicated as contributing factors in the initiation and worsening of gastrointestinal diseases. A link between stress and intestinal permeability has been shown in animal models as well as in human small intestine, but stress effects on the human colorectal mucosal barrier has not been reported. OBJECTIVE To investigate the potential effects of acute psychological stress on colorectal mucosal barrier function and to explore stress-induced molecular events in the rectal mucosa under healthy conditions. METHODS Endoscopic biopsies were taken from the rectosigmoid region of healthy volunteers, who had been subjected to dichotomous listening stress and after a control session, respectively. Paracellular and transcellular permeability were assessed in modified Ussing chambers. RNA expression (microarray technology confirmed by quantitative real-time polymerase chain reaction) and biological pathway analysis were used to investigate the local mucosal response to acute stress. RESULTS Dichotomous listening stress induced a subjective and objective stress response, and significantly increased paracellular but not transcellular permeability. We also identified a stress-induced reduction in RNA expression of genes related to immune cell activation and maturation (CR2, CD20, TCLA1, BANK1, CD22, FDCSP), signaling molecules of homing of immune cells to the gut (chemokines: CCL21, CXCL13, and CCL19, and receptors: CCR7, CXCR5), and innate immunity (DUOX2). Eight of the 10 top down-regulated genes are directly involved in B cell activation, signaling and migration. The systemic stress response correlated positively with paracellular permeability and negatively with DUOX2 expression. CONCLUSION Dichotomous listening stress increases paracellular permeability and modulates immune cell activity in the rectal mucosa. Further studies are warranted to identify the primary mechanisms of stress-mediated reduction of mucosal defensive activity and barrier dysfunction, and their potential implications for gastrointestinal disorders.
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Affiliation(s)
- Linda Gerdin
- Department of Biomedical and Clinical SciencesLinköping UniversityLinköpingSweden,Department of SurgeryLinköping UniversityLinköpingSweden,Surgical Clinic of Jönköping CountyJönköpingSweden
| | - Ana M. González‐Castro
- Laboratory of Translational Mucosal ImmunologyDigestive Diseases Research UnitVall d'Hebron Institut de RecercaHospital Universitari Vall d'Hebron & Facultat de MedicinaUniversitat Autònoma de BarcelonaBarcelonaSpain
| | - Ann‐Charlott Ericson
- Department of Biomedical and Clinical SciencesLinköping UniversityLinköpingSweden,Department of SurgeryLinköping UniversityLinköpingSweden
| | | | - Javier Santos
- Laboratory of Neuro‐immuno‐gastroenterologyDigestive Diseases Research UnitVall d'Hebron Institut de RecercaHospital Universitari Vall d'Hebron & Facultat de MedicinaUniversitat Autònoma de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd)BarcelonaSpain
| | - Susanna A. Walter
- Department of Biomedical and Clinical SciencesLinköping UniversityLinköpingSweden,Department of SurgeryLinköping UniversityLinköpingSweden,Department of GastroenterologyLinköping UniversityLinköpingSweden
| | - Åsa V. Keita
- Department of Biomedical and Clinical SciencesLinköping UniversityLinköpingSweden,Department of SurgeryLinköping UniversityLinköpingSweden
| | - Maria Vicario
- Laboratory of Translational Mucosal ImmunologyDigestive Diseases Research UnitVall d'Hebron Institut de RecercaHospital Universitari Vall d'Hebron & Facultat de MedicinaUniversitat Autònoma de BarcelonaBarcelonaSpain,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd)BarcelonaSpain,Department of Gastrointestinal HealthNestlé Institute of Health SciencesNestlé Research, Société des Produits Nestlé S.A.LausanneSwitzerland
| | - Johan D. Söderholm
- Department of Biomedical and Clinical SciencesLinköping UniversityLinköpingSweden,Department of SurgeryLinköping UniversityLinköpingSweden
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18
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Nasser S, Abdallah DM, Ahmed KA, Abdel-Mottaleb Y, El-Abhar HS. The novel anti-colitic effect of β-adrenergic receptors via modulation of PS1/BACE-1/Aβ axis and NOTCH signaling in an ulcerative colitis model. Front Pharmacol 2022; 13:1008085. [PMID: 36386153 PMCID: PMC9641009 DOI: 10.3389/fphar.2022.1008085] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 10/12/2022] [Indexed: 11/30/2023] Open
Abstract
Although dysautonomia was documented in inflammatory bowel disease, with activation of the stress-related sympathetic system, the role of agonists/antagonists of the adrenergic receptors is not conclusive. Moreover, ulcerative colitis was recently linked to dementia, but the potential role of the presenilin 1(PS1)/BACE-1/beta-amyloid (Aβ) axis has not been evaluated. Hence, we investigated the impact of mirabegron (β3-agonist) and/or carvedilol (β1/β2 antagonist) on iodoacetamide-induced ulcerative colitis with emphasis on the novel pathomechanism of the PS1/BACE-1/Aβ axis in ulcerative colitis, and its relation to the inflammatory cascade, fibrotic processes, and the gut barrier dysfunction. Ulcerated rats were either left untreated or treated for 8 days with mirabegron and/or carvedilol. Besides minimizing colon edema and weight loss, and improving colon structure, mirabegron and/or carvedilol abated colonic PS1/BACE-1/Aβ axis and the NOTCH1/NICD/HES1 hub besides the inflammatory cascade GSK3-β/NF-κΒ/TNF-α, and the oxidative stress marker malondialdehyde. The anti-fibrotic effect was verified by boosting SMAD-7 and inhibiting TGF-β1, α-SMA immunoexpression, and MTC staining. Moreover, the drugs improved the gut barrier function, attested by the increased goblet cells and expression of E-cadherin, and the inhibited expression of p (Y654)-β-catenin to preserve the E-cadherin/β-catenin adherens junction (AJ). These signaling pathways may be orchestrated by the replenished PPAR-γ, a transcription factor known for its anti-colitic effect. Conclusion: Besides maintaining the gut barrier, mirabegron and/or carvedilol mediated their anti-colitic effect by their anti-oxidant, anti-inflammatory, and anti-fibrotic capacities. The therapeutic effect of these drugs depends partly on suppressing the harmful signaling pathways PS1/BACE-1/Aβ, NOTCH1/NICD/HES1, GSK3-β/NF-κΒ/TNF-α, and TGF-1β/α-SMA while enhancing PPAR-γ, SMAD-7, mucus, and AJ.
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Affiliation(s)
- Salma Nasser
- Pharmacology, Toxicology and Biochemistry Department, Faculty of Pharmacy, Future University in Egypt (FUE), New Cairo, Egypt
| | - Dalaal M. Abdallah
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Kawkab A. Ahmed
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Yousra Abdel-Mottaleb
- Pharmacology, Toxicology and Biochemistry Department, Faculty of Pharmacy, Future University in Egypt (FUE), New Cairo, Egypt
| | - Hanan S. El-Abhar
- Pharmacology, Toxicology and Biochemistry Department, Faculty of Pharmacy, Future University in Egypt (FUE), New Cairo, Egypt
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19
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Centella asiatica-Derived Endothelial Paracrine Restores Epithelial Barrier Dysfunction in Radiation-Induced Enteritis. Cells 2022; 11:cells11162544. [PMID: 36010621 PMCID: PMC9406831 DOI: 10.3390/cells11162544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/30/2022] [Accepted: 08/14/2022] [Indexed: 11/17/2022] Open
Abstract
Radiation-induced enteritis is frequently observed following radiotherapy for cancer or occurs due to radiation exposure in a nuclear accident. The loss of the epithelial integrity leads to ‘leaky gut’, so recovery of damaged epithelium is an important strategy in therapeutic trials. Centella asiatica (CA), a traditional herbal medicine, is widely used for wound healing by protecting against endothelial damage. In this study, we investigated the radio-mitigating effect of CA, focusing on the crosstalk between endothelial and epithelial cells. CA treatment relieved radiation-induced endothelial dysfunction and mitigated radiation-induced enteritis. In particular, treatment of the conditioned media from CA-treated irradiated endothelial cells recovered radiation-induced epithelial barrier damage. We also determined that epidermal growth factor (EGF) is a critical factor secreted by CA-treated irradiated endothelial cells. Treatment with EGF effectively improved the radiation-induced epithelial barrier dysfunction. We also identified the therapeutic effects of CA-induced endothelial paracrine in a radiation-induced enteritis mouse model with epithelial barrier restoration. Otherwise, CA treatment did not show radioprotective effects on colorectal tumors in vivo. We showed therapeutic effects of CA on radiation-induced enteritis, with the recovery of endothelial and epithelial dysfunction. Thus, our findings suggest that CA is an effective radio-mitigator against radiation-induced enteritis.
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20
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The change of the electrophysiological parameters using human intestinal tissues from ulcerative colitis and Crohn’s disease. J Pharmacol Sci 2022; 150:90-93. [DOI: 10.1016/j.jphs.2022.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 11/24/2022] Open
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21
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Feng C, Liu X, Hu N, Tang Y, Feng M, Zhou Z. Aeromonas hydrophila Ssp1: A secretory serine protease that disrupts tight junction integrity and is essential for host infection. FISH & SHELLFISH IMMUNOLOGY 2022; 127:530-541. [PMID: 35798244 DOI: 10.1016/j.fsi.2022.06.068] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 06/26/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
Aeromonas hydrophila is a Gram-negative bacterial pathogen with a broad host range, including fish and humans. In this study, we examined the function of a secretory serine protease (named Ssp1) identified in pathogenic A. hydrophila CCL1. Ssp1 possesses a trypsin-like serine protease domain and contains two conserved PDZ domains. Recombinant Ssp1 protein (rSsp1) treatment increased intestinal permeability by downregulating and redistributing tight junction protein Occludin in intestinal Caco-2 cells in vitro. Western blot demonstrated that rSsp1 treatment in Caco-2 cells resulted in marked increases in the expressions of myosin light chain kinase (MLCK) and phosphorylated myosin light chain (p-MLC). For virulence analysis, an isogenic CCL1 mutant ΔSsp1 was created. ΔSsp1 bears an in-frame deletion of the Ssp1 gene. A live infection study in crucian carps showed that, compared to CCL1, ΔSsp1 infection exhibited increased Occludin expression, reduced intestinal permeability and tissue dissemination capacity, and attenuated overall virulence in vivo. However, ΔSsp1 showed no differences in the biofilm formation, swimming motility, and resistance to environmental stress. These lost virulence capacities of ΔSsp1 were restored by complementation with the Ssp1 gene. Global transcriptome analysis and quantitative real-time RT-PCR showed that compared to CCL1 infection, ΔSsp1 promoted the expressions of antimicrobial molecules (MUC2, LEAP-2, Hepcidin-1, and IL-22). Finally, CCL1 infection caused significant dysbiosis of the gut microbiota, including increased Vibrio and Deefgea compared to ΔSsp1 infected fish. Taken together, these results indicate that Ssp1 is essential for the virulence of A. hydrophila and is required for the perturbation of intestinal tight junction barrier.
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Affiliation(s)
- Chen Feng
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Xiaofeng Liu
- Department of Nutrition, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China
| | - Niewen Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Yiyang Tang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Mengzhe Feng
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, 410081, China
| | - Zejun Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, 410081, China.
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22
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Dibekoğlu C, Erbaş O. Histone deacetylase inhibitor givinostat has ameliorative effect in the colitis model. Acta Cir Bras 2022; 37:e370503. [PMID: 35894303 PMCID: PMC9323301 DOI: 10.1590/acb370503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 04/11/2022] [Indexed: 11/22/2022] Open
Abstract
Purpose: To investigate the effect of givinostat treatment in acetic acid-induced ulcerative colitis model in rats. Methods: Thirty male Wistar albino rats were used. Rats were randomly divided into three equal groups, and colitis was induced on 20 rats by rectal administration of %4 solutions of acetic acid. Twenty rats with colitis were randomly divided into two groups. %0.9 NaCl (saline) solution was administered intraperitoneally to the first group of rats (saline group, n=10) at the dose of 1 mL/kg/day. Givinostat was administered intraperitoneally to the second group rats (Givinostat group, n=10) at the dose of 5 mg/kg/day. Samples were collected for biochemical analysis. Colon was removed for histopathological and biochemical examinations. Results: Plasma tumor necrosis factor-α (TNF-α), pentraxin-3 (PTX-3), and malondialdehyde levels were significantly decreased in the givinostat group compared to the saline group (p<0.05, p<0.001, and p<0.001 respectively; p<0.001, p<0.001, and p<0.001, respectively). Colon TNF-α and prostaglandin F2 alpha (PGF-2) levels were significantly decreased (p<0.05, and p<0.001, respectively). The givinostat group had a significantly lower histologic score than saline group (p<0.001, and p<0.001, respectively). Conclusions: Givinostat, a good protector and regenerator of tissue and an anti-inflammatory agent, may be involved in the treatment of colitis in the future.
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Affiliation(s)
- Cengiz Dibekoğlu
- MD. İstanbul Florence Nightingale Hospital - Department of General Surgery - İstanbul, Turkey
| | - Oytun Erbaş
- MD. Demiroğlu Bilim University - Faculty of Medicine - Department of Physiology - İstanbul, Turkey
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Kim HY, Seo JE, Lee H, Bae CH, Ha KT, Kim S. Rumex japonicus Houtt. Extract Suppresses Colitis-Associated Colorectal Cancer by Regulating Inflammation and Tight-Junction Integrity in Mice. Front Pharmacol 2022; 13:946909. [PMID: 35865942 PMCID: PMC9294457 DOI: 10.3389/fphar.2022.946909] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 06/13/2022] [Indexed: 11/15/2022] Open
Abstract
Irritable bowel disease (IBD), which results in an elevated risk of colitis-associated colorectal cancer (CAC), is characterized by inflammation and barrier disruption of the gut. The genus Rumex has anti-oxidative and anti-inflammatory effects, and the roots of Rumex japonicus Houtt (RJ) have been traditionally used in East Asia to treat digestive problems. We investigated the protective effect of RJ against azoxymethane (AOM)-and dextran sulfate sodium (DSS)-induced CAC in C57BL/6N male mice. The mice were intraperitoneally injected with AOM on the first day and orally treated with 2% DSS for 2 weeks (on the third and sixth weeks). RJ extract (100 mg/kg) was administered to the mice in the RJ group for 4 weeks (from the third to sixth week), and all mice were sacrificed on the final day of the eighth week. Changes in morphology, tight junctions (TJs), inflammation-related factors in the colon and serum inflammatory cytokine levels were measured. The colons of AOM/DSS-treated mice were shorter and heavier than those of normal mice. The number of tumors in the colons of AOM/DSS-treated mice increased; however, RJ suppressed these changes. RJ also reduced the levels of tumor necrosis factor-α, interleukin (IL)-6, and IL-1β in the colon and serum, and it increased the level of IL-10 in the colon. Moreover, RJ inhibited the barrier disruption and apoptosis in the colons of AOM/DSS-treated mice. RJ effectively suppressed AOM/DSS-induced CAC by inhibiting tumor formation, inflammation, disruption of TJ, and apoptosis in the colon.
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Affiliation(s)
- Hee-Young Kim
- Korean Medicine Research Center for Healthy Aging, Pusan National University, Yangsan, South Korea
| | - Ji Eun Seo
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, South Korea
| | - Hanul Lee
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, South Korea
| | - Chang-Hwan Bae
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, South Korea
| | - Ki-Tae Ha
- Korean Medicine Research Center for Healthy Aging, Pusan National University, Yangsan, South Korea
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, South Korea
| | - Seungtae Kim
- Korean Medicine Research Center for Healthy Aging, Pusan National University, Yangsan, South Korea
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, South Korea
- *Correspondence: Seungtae Kim,
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24
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Enhanced oxidative phosphorylation of IgG plasma cells can contribute to hypoxia in the mucosa of active ulcerative colitis. Histochem Cell Biol 2022; 158:335-344. [PMID: 35716204 DOI: 10.1007/s00418-022-02122-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2022] [Indexed: 11/04/2022]
Abstract
Mucosal hypoxia is detected in the mucosa of ulcerative colitis (UC), however the mechanism and the cause of hypoxia is not fully understood, while a dense infiltration of plasma cells is observed in the inflamed mucosa of UC. When differentiating from a B cell to a plasma cell, the energy metabolism dramatically shifts from glycolysis to oxidative phosphorylation, which results in a large amount of oxygen consumption of the plasma cell. We hypothesized that the plasma cell infiltration into the inflamed mucosa contributes to the mucosal hypoxia in UC in part. We examined the association between mucosal hypoxia and plasma cell infiltration in UC. More IgG plasma cells (but not IgA plasma cells) were distributed, and the nuclear and cell sizes were enlarged in hypoxic mucosa compared to normoxic mucosa in UC. Oxidative phosphorylation signature genes of these IgG plasma cells were markedly upregulated compared to those of other lymphoid cells infiltrating the lamina propria of inflamed mucosa of UC. Enlarged IgG plasma cells, which increase in number in the inflamed mucosa of UC, can be related to the hypoxic state of the inflamed mucosa of UC.
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Rao K, Qin S, Yang Y, Zhan K, Wu H, Zheng H, Huang S. Shenling Baizhu Powder Alleviates TNBS-Induced Colitis in Rats by Improving Intestinal Epithelial Permeability and Inhibiting Inflammation Through the TLR5/MyD88/NF-κB Pathway. Front Pharmacol 2022; 13:883918. [PMID: 35571126 PMCID: PMC9096158 DOI: 10.3389/fphar.2022.883918] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 03/21/2022] [Indexed: 12/17/2022] Open
Abstract
Aim of the study: To evaluate the protective effect and mechanism of shenling baizhu powder (SBP) on TNBS-induced colitis. Methods: Rats were given TNBS to establish the model of colitis and subsequently treated with different doses of SBP or mesalamine (MES). In addition, the expression of the TLR5/MyD88/NF-κB signaling pathway and critical targets of the intestinal mucosal barrier was detected by immunochemical analysis techniques. Results: SBP significantly ameliorated the symptoms of TNBS-induced colitis in rats and reduced the secretion of pro-inflammatory cytokines. SBP could effectively strengthen epithelial barrier integrity in TNBS-induced colitis by increasing the secretion of mucin and tight junction and inhibiting apoptosis. Furthermore, we identified the crucial role of the TLR5/MyD88/NF-κB signaling pathway in exerting the therapeutic effect of SBP. Conclusion: The results of our study suggest that SBP has therapeutic effects on TNBS-induced colitis and potential value in treating and maintaining remission of colitis.
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Affiliation(s)
- Kehan Rao
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shumin Qin
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou, China
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong-Hong Kong-Macau Joint Lab on Chinese Medicine and Immune Disease Research, Guangzhou, China
- Collaborative Innovation Team of Traditional Chinese Medicine in Prevention and Treatment of Functional Gastrointestinal Diseases, Guangzhou, China
| | - Yuanming Yang
- Dongguan Hospital of Guangzhou University of Chinese Medicine, Dongguan, China
| | - Kai Zhan
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Haomeng Wu
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou, China
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong-Hong Kong-Macau Joint Lab on Chinese Medicine and Immune Disease Research, Guangzhou, China
- Collaborative Innovation Team of Traditional Chinese Medicine in Prevention and Treatment of Functional Gastrointestinal Diseases, Guangzhou, China
| | - Huan Zheng
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou, China
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong-Hong Kong-Macau Joint Lab on Chinese Medicine and Immune Disease Research, Guangzhou, China
- Collaborative Innovation Team of Traditional Chinese Medicine in Prevention and Treatment of Functional Gastrointestinal Diseases, Guangzhou, China
- *Correspondence: Huan Zheng, ; Shaogang Huang,
| | - Shaogang Huang
- The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou, China
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong-Hong Kong-Macau Joint Lab on Chinese Medicine and Immune Disease Research, Guangzhou, China
- Collaborative Innovation Team of Traditional Chinese Medicine in Prevention and Treatment of Functional Gastrointestinal Diseases, Guangzhou, China
- Dongguan Hospital of Guangzhou University of Chinese Medicine, Dongguan, China
- *Correspondence: Huan Zheng, ; Shaogang Huang,
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Micronutrient Improvement of Epithelial Barrier Function in Various Disease States: A Case for Adjuvant Therapy. Int J Mol Sci 2022; 23:ijms23062995. [PMID: 35328419 PMCID: PMC8951934 DOI: 10.3390/ijms23062995] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 03/01/2022] [Indexed: 02/04/2023] Open
Abstract
The published literature makes a very strong case that a wide range of disease morbidity associates with and may in part be due to epithelial barrier leak. An equally large body of published literature substantiates that a diverse group of micronutrients can reduce barrier leak across a wide array of epithelial tissue types, stemming from both cell culture as well as animal and human tissue models. Conversely, micronutrient deficiencies can exacerbate both barrier leak and morbidity. Focusing on zinc, Vitamin A and Vitamin D, this review shows that at concentrations above RDA levels but well below toxicity limits, these micronutrients can induce cell- and tissue-specific molecular-level changes in tight junctional complexes (and by other mechanisms) that reduce barrier leak. An opportunity now exists in critical care—but also medical prophylactic and therapeutic care in general—to consider implementation of select micronutrients at elevated dosages as adjuvant therapeutics in a variety of disease management. This consideration is particularly pointed amidst the COVID-19 pandemic.
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Schwarzfischer M, Rogler G. The Intestinal Barrier—Shielding the Body from Nano- and Microparticles in Our Diet. Metabolites 2022; 12:metabo12030223. [PMID: 35323666 PMCID: PMC8952728 DOI: 10.3390/metabo12030223] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/25/2022] [Accepted: 02/28/2022] [Indexed: 01/27/2023] Open
Abstract
Nano- and microparticles are an implicit part of the human diet. They are unknowingly ingested with our food that contains them as additives or pollutants. However, their impact on human health is not yet understood and controversially discussed. The intestinal epithelial barrier shields our body against exogenous influences, such as commensal bacteria, pathogens, and body-foreign particles and, therefore, protects our body integrity. Breakdown of the intestinal epithelial barrier and aberrant immune responses are key events in the pathogenesis of inflammatory bowel disease (IBD). Epithelial lesions might enable systemic translocation of nano- and microparticles into the system, eventually triggering an excessive immune response. Thus, IBD patients could be particularly vulnerable to adverse health effects caused by the ingestion of synthetic particles with food. The food-additive titanium dioxide (TiO2) serves as a coloring agent in food products and is omnipresent in the Western diet. TiO2 nanoparticles exacerbate intestinal inflammation by activation of innate and adaptive immune response. Because of serious safety concerns, the use of TiO2 as a food additive was recently banned from food production within the European Union. Due to environmental pollution, plastic has entered the human food chain, and plastic microparticles have been evidenced in the drinking water and comestible goods. The impact of plastic ingestion and its resulting consequences on human health is currently the subject of intense research. Focusing on TiO2 and plastic particles in the human diet and their impact on epithelial integrity, gut homeostasis, and intestinal inflammation, this review is addressing contemporary hot topics which are currently attracting a lot of public attention.
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Wang H, He X, Liang S, Chen X. Role of vitamin D in ulcerative colitis: an update on basic research and therapeutic applications. Expert Rev Gastroenterol Hepatol 2022; 16:251-264. [PMID: 35236213 DOI: 10.1080/17474124.2022.2048817] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Vitamin D deficiency is common in patients with ulcerative colitis (UC). Moreover, vitamin D supplementation seems to contribute to disease relief. Nevertheless, the exact etiological link between vitamin D deficiency and UC is far from clear, and an agreement has not been reached on the frequency and dosage of vitamin D supplementation required. AREAS COVERED This review will outline the possible role of vitamin D in the pathogenesis of UC and summarize the current state of clinical research on vitamin D. Literature was searched on PUBMED, with 'Vitamin D,' 'Ulcerative colitis,' 'Vitamin D receptor,' and 'disease activity' as MeSH Terms. Relevant information is presented in figures or tables. EXPERT OPINION The etiological relationship between vitamin D and the onset of UC is still being researched. More high-quality double-blind randomized clinical studies are needed to determine the efficacy of vitamin D supplementation in the treatment of UC, whether as the main treatment or as an adjuvant treatment. Importantly, determining the dosage and frequency of vitamin D supplementation should be the main research direction in the future, and regional factors should also be fully considered in this respect.
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Affiliation(s)
- HongQian Wang
- Department of Gastroenterology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui China
| | - Xue He
- Department of Gastroenterology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui China
| | - ShiMin Liang
- Department of Gastroenterology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui China
| | - Xi Chen
- Department of Gastroenterology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui China
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29
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Laudisi F, Stolfi C, Bevivino G, Maresca C, Franzè E, Troncone E, Lolli E, Marafini I, Pietrucci D, Teofani A, Di Grazia A, Di Fusco D, Colantoni A, Ortenzi A, Desideri A, Monteleone I, Monteleone G. GATA6 Deficiency Leads to Epithelial Barrier Dysfunction and Enhances Susceptibility to Gut Inflammation. J Crohns Colitis 2022; 16:301-311. [PMID: 34374415 DOI: 10.1093/ecco-jcc/jjab145] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND AND AIMS Intestinal barrier dysfunction is a hallmark of inflammatory bowel diseases [IBD], but the mechanisms that lead to such a defect are not fully understood. This study was aimed at characterising the factors involved in the defective barrier function in IBD. METHODS Transcriptome analysis was performed on colon samples taken from healthy controls [CTR] and IBD patients. Expression of GATA-binding factor 6 [GATA6], a transcription factor involved in intestinal epithelial cell differentiation, was evaluated in colon samples taken from CTR and IBD patients by real-time polymerase chain reaction [PCR] and immunohistochemistry. Intestinal sections of wild-type and Gata6del mice, which exhibit a conditional Gata6 deletion in intestinal epithelial cells and which are either left untreated or receive subcutaneous indomethacin or rectal trinitrobenzene sulphonic acid, were stained with haematoxylin and eosin. In parallel, some Gata6del mice received antibiotics to deplete intestinal flora. Mucosal inflammatory cell infiltration and cytokine production were evaluated by flow cytometry and real-time PCR, respectively, and tight junction proteins were examined by immunofluorescence. Intestinal barrier integrity was assessed by fluorescein isothiocyanate [FITC]-dextran assay. RESULTS Multiple genes involved in cell commitment/proliferation and wound healing were differentially expressed in IBD compared with CTR. Among these, GATA6 was significantly decreased in the IBD epithelium compared with CTR. In mice, conditional deletion of GATA6 in the intestinal epithelium induced primarily epithelial damage, diminished zonula occludens-1 expression, and enhanced intestinal permeability, ultimately resulting in bacteria-driven local immune response and enhanced susceptibility to gut inflammation. CONCLUSIONS Reduced expression of GATA6 promotes intestinal barrier dysfunction, thus amplifying intestinal inflammatory pathology.
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Affiliation(s)
- Federica Laudisi
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Carmine Stolfi
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy.,Division of Clinical Biochemistry and Clinical Molecular Biology, University of Rome Tor Vergata, Rome, Italy
| | - Gerolamo Bevivino
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Claudia Maresca
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Eleonora Franzè
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Edoardo Troncone
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Elisabetta Lolli
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Irene Marafini
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Daniele Pietrucci
- Department of Biology, University of Rome Tor Vergata, Rome, Italy.,Department for Innovation in Biological, Agro-Food and Forest Systems, DIBAF, University of Tuscia, Viterbo, Italy
| | - Adelaide Teofani
- Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Antonio Di Grazia
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Davide Di Fusco
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Alfredo Colantoni
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Angela Ortenzi
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | | | - Ivan Monteleone
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, Rome, Italy
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Implication of Intestinal Barrier Dysfunction in Gut Dysbiosis and Diseases. Biomedicines 2022; 10:biomedicines10020289. [PMID: 35203499 PMCID: PMC8869546 DOI: 10.3390/biomedicines10020289] [Citation(s) in RCA: 90] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 02/04/2023] Open
Abstract
The intestinal mucosal barrier, also referred to as intestinal barrier, is widely recognized as a critical player in gut homeostasis maintenance as it ensures the complex crosstalk between gut microbes (both commensals and pathogens) and the host immune system. Highly specialized epithelial cells constantly cope with several protective and harmful agents to maintain the multiple physiological functions of the barrier as well as its integrity. However, both genetic defects and environmental factors can break such equilibrium, thus promoting gut dysbiosis, dysregulated immune-inflammatory responses, and even the development of chronic pathological conditions. Here, we review and discuss the molecular and cellular pathways underlying intestinal barrier structural and functional homeostasis, focusing on potential alterations that may undermine this fine balance.
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31
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Li R, Chen C, Liu B, Shi W, Shimizu K, Zhang C. Bryodulcosigenin a natural cucurbitane-type triterpenoid attenuates dextran sulfate sodium (DSS)-induced colitis in mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 94:153814. [PMID: 34798522 DOI: 10.1016/j.phymed.2021.153814] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/01/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Bryodulcosigenin (BDG) a cucurbitane-type triterpenoid has been isolated from the roots of Bryonia dioca and possesses marked anti-inflammatory effects, although its beneficial effect against intestinal disorders remains unclear. PURPOSE To explore the underlying mechanism of BDG on the dysbiosis of chronic ulcerative colitis (UC) and its associated side-effects on lung tissues. METHODS A chronic UC model was established using 2.5% dextran sulfate sodium (DSS) in mice treated for 64 days and diagnostic assessments, western blot analysis and quantitative real time-PCR were employed to determine the protective mechanism of BDG. RESULTS Oral administration of BDG (10 mg/kg/day) significantly improved colon length, disease activity index, and alleviated colonic histopathological damage in the DSS-induced colitis mice. BDG not only reversed the TNF-α-induced degradation of tight junction proteins (occludin and ZO-1) but also suppressed the elevated apoptosis seen in intestinal epithelial cells (NCM460). In addition, BDG significantly attenuated damage in alveolar epithelial cells (MLE-12) co-cultured with NCM460 cells under inflammatory conditions. Furthermore, BDG in vivo significantly prevented the symptoms of respiratory disorders and repressed alveolar inflammation by regulating DSS-induced chronic colitis in mice. CONCLUSION BDG effectively inhibited the apoptosis of intestinal epithelial cells and suppressed the activation of the NLRP3 inflammasome which resulted in the restoration of the intestinal barrier. Therefore, the enhanced integrity of intestinal epithelial cells produced by BDG intervention contributed to its anti-colitis effects, indicating its great potential as an inhibitor of UC and lung injury. Therefore, restoring intestinal integrity may represent a promising strategy in the prevention of pulmonary disease.
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Affiliation(s)
- Renshi Li
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China; Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Ce Chen
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China; Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Bei Liu
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Wen Shi
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Kuniyoshi Shimizu
- Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China; Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Chaofeng Zhang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China; Sino-Jan Joint Lab of Natural Health Products Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, China.
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Renous N, Kiri MD, Barnea RA, Rauti R, Leichtmann-Bardoogo Y, Maoz BM. Spatial trans-epithelial electrical resistance (S-TEER) integrated in organs-on-chips. LAB ON A CHIP 2021; 22:71-79. [PMID: 34878455 DOI: 10.1039/d1lc00789k] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Transepithelial/transendothelial electrical resistance (TEER) is a label-free assay that is commonly used to assess tissue barrier integrity. TEER measurement systems have been embedded in organ-on-a-chip devices to provide live readouts of barrier functionality. Yet, these systems commonly provide the impedance values which correspond to the highest level of permeability throughout the chip and cannot provide localized information on specific regions of interest. This work introduces a system that provides this essential information: a spatial-TEER (S-TEER) organ-on-a-chip platform, which incorporates moving (scanning) electrodes that can measure electrical resistance at any desired location along the chip. We demonstrate the system's capacity to obtain localized measurements of permeability in selected regions of a cell sample. We show how, in a layer with non-uniform levels of cell coverage, permeability is higher in areas with lower cell density-suggesting that the system can be used to monitor local cellular growth in vitro. To demonstrate the applicability of the chip in studies of barrier function, we characterize tissue response to TNF-α and to EGTA, agents known to harm tissue barrier integrity.
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Affiliation(s)
- Noa Renous
- Department of Biomedical Engineering, Tel Aviv University, Tel Aviv 69978, Israel.
| | - Mark D Kiri
- Department of Biomedical Engineering, Tel Aviv University, Tel Aviv 69978, Israel.
| | - Ronny A Barnea
- School of Chemistry, Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Rossana Rauti
- Department of Biomedical Engineering, Tel Aviv University, Tel Aviv 69978, Israel.
| | | | - Ben M Maoz
- Department of Biomedical Engineering, Tel Aviv University, Tel Aviv 69978, Israel.
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel
- The Center of Nanoscience and Nanotechnology, Tel Aviv University, Tel Aviv 69978, Israel
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Fu ZD, Selwyn FP, Cui JY, Klaassen CD. RNA-Seq unveiled section-specific host response to lack of gut microbiota in mouse intestine. Toxicol Appl Pharmacol 2021; 433:115775. [PMID: 34715074 DOI: 10.1016/j.taap.2021.115775] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 01/07/2023]
Abstract
To identify host responses induced by commensal microbiota in intestine, transcriptomes of four sections of the intestine were compared between germ-free (GF) mice and conventional (CV) controls using RNA-Seq. Cuffdiff revealed that jejunum had the highest number of differentially expressed genes (over 2000) between CV and GF mice, followed by large intestine (LI), duodenum, and ileum. Gene set association analysis identified section-specific alterations in pathways associated with the absence of commensal microbiota. For example, in GF mice, cytochrome P450 (Cyp)-mediated xenobiotic metabolism was preferably down-regulated in duodenum and ileum, whereas intermediary metabolism pathways such as protein digestion and amino acid metabolism were preferably up-regulated in duodenum, jejunum, and LI. In GF mice, carboxypeptidase A1 (Cpa1), which is important for protein digestion, was the top most up-regulated gene within the entire transcriptome in duodenum (53-fold) and LI (142-fold). Conversely, fatty acid binding protein 6 (Fabp6/Ibabp), which is important for bile acid intestinal reabsorption, was the top most down-regulated gene in jejunum (358-fold), and the drug-metabolizing enzyme Cyp1a1 was the top most down-regulated gene in ileum (40-fold). Section-specific host transcriptomic response to the absence of intestinal microbiota was also observed for other important physiological pathways such as cell junction, the absorption of small molecules, bile acid homeostasis, and immune response. In conclusion, the present study has revealed section-specific host gene transcriptional alterations in GF mice, highlighting the importance of intestinal microbiota in facilitating the physiological and drug responses of the host intestine.
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Affiliation(s)
- Zidong Donna Fu
- Institute for Neurodegenerative Diseases, University of California San Francisco, San Francisco, CA, United States of America
| | - Felcy Pavithra Selwyn
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, United States of America
| | - Julia Yue Cui
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, United States of America
| | - Curtis D Klaassen
- Department of Pharmacology, Toxicology, and Therapeutics, School of Medicine, University of Kansas, Kansas City, KS, United States of America.
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Chen S, Chen Z, Wang Y, Hao W, Yuan Q, Zhou H, Gao C, Wang Y, Wu X, Wang S. Targeted delivery of Chinese herb pair-based berberine/tannin acid self-assemblies for the treatment of ulcerative colitis. J Adv Res 2021; 40:263-276. [PMID: 36100331 PMCID: PMC9481968 DOI: 10.1016/j.jare.2021.11.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 11/24/2021] [Indexed: 01/01/2023] Open
Abstract
A colon-targeted hyaluronic acid-coated berberine/tannin acid nanostructure (HTB) was developed HTB could localize in inflamed colon in colitis mice HTB exerted strong therapeutic efficacy in mouse model of colitis HTB regulated gut barrier function and apoptosis in colitis mice HTB partially recovered DSS-mediated gut microbiome alteration
Introduction Ulcerative colitis (UC) is a chronic recurrent idiopathic disease characterized by damage to the colonic epithelial barrier and disruption of inflammatory homeostasis. At present, there is no curative therapy for UC, and the development of effective and low-cost therapies is strongly advocated. Objectives Multiple lines of evidence support that tannic acid (TA) and berberine (BBR), two active ingredients derived from Chinese herb pair (Rhei Radix et Rhizoma and Coptidis Rhizoma), have promising therapeutic effects on colonic inflammation. This study aims to develop a targeted delivery system based on BBR/TA-based self-assemblies for the treatment of UC. Methods TA and BBR self-assemblies were optimized, and hyaluronic acid (HA) was coated to achieve targeted colon delivery via HA-cluster of differentiation 44 (CD44) interactions. The system was systematically characterized and dextran sodium sulfate (DSS)-induced mouse colitis model was further used to investigate the biodistribution behavior, effect and mechanism of the natural system. Results TA and BBR could self-assemble into stable particles (TB) and HA-coated TB (HTB) further increased cellular uptake and accumulation in inflamed colon lesions. Treatment of HTB inhibited pro-inflammatory cytokine levels, restored expression of tight junction-associated proteins and recovered gut microbiome alteration, thereby exerting anti-inflammatory effects against DSS-induced acute colitis. Conclusion Our targeted strategy may provide a convenient and powerful platform for UC and reveal new modes of application of herbal combinations.
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35
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Liu CY, Cham CM, Chang EB. Epithelial wound healing in inflammatory bowel diseases: the next therapeutic frontier. Transl Res 2021; 236:35-51. [PMID: 34126257 PMCID: PMC8380699 DOI: 10.1016/j.trsl.2021.06.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/25/2021] [Accepted: 06/08/2021] [Indexed: 02/07/2023]
Abstract
Patients with one of the many chronic inflammatory disorders broadly classified as inflammatory bowel disease (IBD) now have a diverse set of immunomodulatory therapies at their disposal. Despite these recent medical advances, complete sustained remission of disease remains elusive for most patients. The full healing of the damaged intestinal mucosa is the primary goal of all therapies. Achieving this requires not just a reduction of the aberrant immunological response, but also wound healing of the epithelium. No currently approved therapy directly targets the epithelium. Epithelial repair is compromised in IBD and normally facilitates re-establishment of the homeostatic barrier between the host and the microbiome. In this review, we summarize the evidence that epithelial wound healing represents an important yet underdeveloped therapeutic modality for IBD. We highlight 3 general approaches that are promising for developing a new class of epithelium-targeted therapies: epithelial stem cells, cytokines, and microbiome engineering. We also provide a frank discussion of some of the challenges that must be overcome for epithelial repair to be therapeutically leveraged. A concerted approach by the field to develop new therapies targeting epithelial wound healing will offer patients a game-changing, complementary class of medications and could dramatically improve outcomes.
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Affiliation(s)
- Cambrian Y Liu
- Department of Medicine, The University of Chicago, Chicago, Illinois.
| | - Candace M Cham
- Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Eugene B Chang
- Department of Medicine, The University of Chicago, Chicago, Illinois.
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36
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Stürzl M, Kunz M, Krug SM, Naschberger E. Angiocrine Regulation of Epithelial Barrier Integrity in Inflammatory Bowel Disease. Front Med (Lausanne) 2021; 8:643607. [PMID: 34409045 PMCID: PMC8365087 DOI: 10.3389/fmed.2021.643607] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 07/07/2021] [Indexed: 12/16/2022] Open
Abstract
Inflammatory bowel disease describes chronic inflammatory disorders. The incidence of the disease is rising. A major step in disease development is the breakdown of the epithelial cell barrier. Numerous blood vessels are directly located underneath this barrier. Diseased tissues are heavily vascularized and blood vessels significantly contribute to disease progression. The gut-vascular barrier (GVB) is an additional barrier controlling the entry of substances into the portal circulation and to the liver after passing the first epithelial barrier. The presence of the GVB rises the question, whether the vascular and endothelial barriers may communicate bi-directionally in the regulation of selective barrier permeability. Communication from epithelial to endothelial cells is well-accepted. In contrast, little is known on the respective backwards communication. Only recently, perfusion-independent angiocrine functions of endothelial cells were recognized in a way that endothelial cells release specific soluble factors that may directly act on the epithelial barrier. This review discusses the putative involvement of angiocrine inter-barrier communication in the pathogenesis of IBD.
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Affiliation(s)
- Michael Stürzl
- Division of Molecular and Experimental Surgery, Department of Surgery, Universitätsklinikum Erlangen, Friedrich-Alexander University (FAU) of Erlangen-Nürnberg, Erlangen, Germany
| | - Meik Kunz
- Chair of Medical Informatics, Friedrich-Alexander-University (FAU) of Erlangen-Nürnberg, Erlangen, and Fraunhofer Institute of Toxicology and Experimental Medicine, Hannover, Germany
| | - Susanne M. Krug
- Clinical Physiology/Nutritional Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Elisabeth Naschberger
- Division of Molecular and Experimental Surgery, Department of Surgery, Universitätsklinikum Erlangen, Friedrich-Alexander University (FAU) of Erlangen-Nürnberg, Erlangen, Germany
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37
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Pochard C, Gonzales J, Bessard A, Mahe MM, Bourreille A, Cenac N, Jarry A, Coron E, Podevin J, Meurette G, Neunlist M, Rolli-Derkinderen M. PGI 2 Inhibits Intestinal Epithelial Permeability and Apoptosis to Alleviate Colitis. Cell Mol Gastroenterol Hepatol 2021; 12:1037-1060. [PMID: 33971327 PMCID: PMC8342971 DOI: 10.1016/j.jcmgh.2021.05.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Inflammatory bowel diseases (IBDs) that encompass both ulcerative colitis and Crohn's disease are a major public health problem with an etiology that has not been fully elucidated. There is a need to improve disease outcomes and preventive measures by developing new effective and lasting treatments. Although polyunsaturated fatty acid metabolites play an important role in the pathogenesis of several disorders, their contribution to IBD is yet to be understood. METHODS Polyunsaturated fatty acids metabolite profiles were established from biopsy samples obtained from Crohn's disease, ulcerative colitis, or control patients. The impact of a prostaglandin I2 (PGI2) analog on intestinal epithelial permeability was tested in vitro using Caco-2 cells and ex vivo using human or mouse explants. In addition, mice were treated with PGI2 to observe dextran sulfate sodium (DSS)-induced colitis. Tight junction protein expression, subcellular location, and apoptosis were measured in the different models by immunohistochemistry and Western blotting. RESULTS A significant reduction of PGI2 in IBD patient biopsies was identified. PGI2 treatment reduced colonic inflammation, increased occludin expression, decreased caspase-3 cleavage and intestinal permeability, and prevented colitis development in DSS-induced mice. Using colonic explants from mouse and human control subjects, the staurosporine-induced increase in paracellular permeability was prevented by PGI2. PGI2 also induced the membrane location of occludin and reduced the permeability observed in colonic biopsies from IBD patients. CONCLUSIONS The present study identified a PGI2 defect in the intestinal mucosa of IBD patients and demonstrated its protective role during colitis.
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Affiliation(s)
- Camille Pochard
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, Institut des Maladies de l'Appareil Digestif, Nantes, France
| | - Jacques Gonzales
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, Institut des Maladies de l'Appareil Digestif, Nantes, France
| | - Anne Bessard
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, Institut des Maladies de l'Appareil Digestif, Nantes, France
| | - Maxime M Mahe
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, Institut des Maladies de l'Appareil Digestif, Nantes, France; Department of Pediatric General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio
| | - Arnaud Bourreille
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, Institut des Maladies de l'Appareil Digestif, Nantes, France; CHU de Nantes, Hôpital Hôtel-Dieu, Nantes, France; CIC 1413, Nantes, France
| | - Nicolas Cenac
- UMR1220, IRSD, INSERM, INRA, INP-ENVT, Université de Toulouse, Toulouse, France
| | - Anne Jarry
- Université de Nantes, Inserm, CRCINA, Nantes, France
| | - Emmanuel Coron
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, Institut des Maladies de l'Appareil Digestif, Nantes, France; CHU de Nantes, Hôpital Hôtel-Dieu, Nantes, France
| | | | - Guillaume Meurette
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, Institut des Maladies de l'Appareil Digestif, Nantes, France; CHU de Nantes, Hôpital Hôtel-Dieu, Nantes, France
| | - Michel Neunlist
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, Institut des Maladies de l'Appareil Digestif, Nantes, France
| | - Malvyne Rolli-Derkinderen
- Université de Nantes, Inserm, TENS, The Enteric Nervous System in Gut and Brain Disorders, Institut des Maladies de l'Appareil Digestif, Nantes, France.
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Gasaly N, Hermoso MA, Gotteland M. Butyrate and the Fine-Tuning of Colonic Homeostasis: Implication for Inflammatory Bowel Diseases. Int J Mol Sci 2021; 22:ijms22063061. [PMID: 33802759 PMCID: PMC8002420 DOI: 10.3390/ijms22063061] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/08/2020] [Accepted: 12/08/2020] [Indexed: 02/06/2023] Open
Abstract
This review describes current evidence supporting butyrate impact in the homeostatic regulation of the digestive ecosystem in health and inflammatory bowel diseases (IBDs). Butyrate is mainly produced by bacteria from the Firmicutes phylum. It stimulates mature colonocytes and inhibits undifferentiated malignant and stem cells. Butyrate oxidation in mature colonocytes (1) produces 70–80% of their energetic requirements, (2) prevents stem cell inhibition by limiting butyrate access to crypts, and (3) consumes oxygen, generating hypoxia and maintaining luminal anaerobiosis favorable to the microbiota. Butyrate stimulates the aryl hydrocarbon receptor (AhR), the GPR41 and GPR109A receptors, and inhibits HDAC in different cell types, thus stabilizing the gut barrier function and decreasing inflammatory processes. However, some studies indicate contrary effects according to butyrate concentrations. IBD patients exhibit a lower abundance of butyrate-producing bacteria and butyrate content. Additionally, colonocyte butyrate oxidation is depressed in these subjects, lowering luminal anaerobiosis and facilitating the expansion of Enterobacteriaceae that contribute to inflammation. Accordingly, gut dysbiosis and decreased barrier function in IBD seems to be secondary to the impaired mitochondrial disturbance in colonic epithelial cells.
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Affiliation(s)
- Naschla Gasaly
- Department of Nutrition, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile;
- Laboratory of Innate Immunity, Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile;
| | - Marcela A. Hermoso
- Laboratory of Innate Immunity, Program of Immunology, Institute of Biomedical Sciences, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile;
| | - Martín Gotteland
- Department of Nutrition, Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile;
- Department of Human Nutrition, Institute of Nutrition and Food Technology (INTA), Universidad de Chile, Santiago 7830490, Chile
- Millennium Nucleus in the Biology of Intestinal Microbiota, Santiago 8380453, Chile
- Correspondence: ; Tel.: +56-989-059-222
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39
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Omayone TP, Olaleye SB. Biochemical and histopathological effects of low dose vanadium in the healing of acetic acid-induced colitis in male wistar rats. J Basic Clin Physiol Pharmacol 2021; 33:273-283. [PMID: 33592685 DOI: 10.1515/jbcpp-2020-0246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/31/2020] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Vanadium has been reported to possess relevant therapeutic properties such as anti-diabetic and anti-tumoral. This study aimed at determining the effects of vanadium on experimentally induced colitis in rats. METHODS Forty-five male Wistar rats (103 ± 3.90 g, n=15) were used for this study and were divided into three groups. Group 1 (Untreated control) had nothing added to their drinking, while groups 2 and 3 received sodium metavanadate at a dose of 50 and 200 mg/L respectively in their drinking water for 10 weeks. Colitis was thereafter induced by intra colonic administration of 1.50 mL of 6% acetic acid. Animals were sacrificed on day 0 (pre-induction), three- and seven-days post induction. Blood samples were collected for haematological variables and the distal 8 cm of the colon was collected for macroscopic, histological and biochemical (malondialdehyde-MDA, superoxide dismutase-SOD, catalase-CAT, glutathione peroxidase- GPx and nitrite concentration- NO) assessment. RESULTS Low dose vanadium proved beneficial in ameliorating acetic acid-induced colitis by improving both histopathological and haematological changes. Gross observation showed a faster healing rate in vanadium treated groups (50 and 200 mg/L) compared with untreated control at day 3 (40 and 26.20 vs. 2.50%) and day 7 (80 and 66.70 vs. 42%) respectively. Vanadium also appears to exert its beneficial effects on acetic acid-induced colitis via up regulation of antioxidant enzymes (SOD, CAT, GPx) and NO while decreasing the over production of MDA. CONCLUSIONS Vanadium at small concentration functions as an essential trace element and may be able to promote healing process during ulcerative colitis.
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Affiliation(s)
- Tosan Peter Omayone
- Gastrointestinal Secretion and Inflammation Research Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Oyo State, Nigeria.,Department of Physiology, School of Health and Health Technology, Federal University of Technology Akure, Akure, Nigeria
| | - Samuel Babafemi Olaleye
- Gastrointestinal Secretion and Inflammation Research Unit, Department of Physiology, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Oyo State, Nigeria
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40
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Chen LJ, Zhi X, Zhang KK, Wang LB, Li JH, Liu JL, Xu LL, Yoshida JS, Xie XL, Wang Q. Escalating dose-multiple binge methamphetamine treatment elicits neurotoxicity, altering gut microbiota and fecal metabolites in mice. Food Chem Toxicol 2021; 148:111946. [PMID: 33359793 DOI: 10.1016/j.fct.2020.111946] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 11/30/2020] [Accepted: 12/18/2020] [Indexed: 02/06/2023]
Abstract
Methamphetamine (METH) is an addictive and illegal psychostimulant drug that can cause multiple organ dysfunction, especially in the central nervous system (CNS). Gut microbiota have been implicated in development of various CNS-related diseases, via the gut-brain axis (GBA). However, effect of METH in the alteration of gut microbiota and fecal metabolites is unclear, whereas the relationship with METH-induced neurotoxicity remains unknown. In the current study, we investigated effect of METH on neurotoxicity in striatum and colonic damage by exposing BALB/c mice to an escalating dose-multiple binge regimen, and then analyzed protein expression using Western blot analysis. We further detected and sequenced the 16 S rRNA gene in fecal samples, and performed ultra-high-performance liquid chromatography-mass spectrometry (UHPLC-MS)-based metabolomics to analyze gut microbes and fecal metabolites. Exposure to METH significantly downregulated tyrosine hydroxylase (TH) proteins, but upregulated MAOA, Beclin1, Atg5, and LC3-Ⅱ. METH up-regulated inflammation-related factors, such as caspase1, TNF-α and IL-18, by activating the toll-like receptors 4 (TLR4)/myeloid differentiation factor 88 (Myd88)/nuclear factor κB (NF-κB) pathway and reduced occludin protein expression. In addition, METH exposure changed α and β diversities of gut microbiota. Specifically, METH exposure elevated relative abundances of pathogenic bacteria, but reduced those of probiotics. Metabolomics, combined with enrichment analyses revealed that METH exposure altered fecal metabolites. Our findings suggest that METH exposure induced autophagy in the CNS, elevated intestinal autophagy flora, leading to accumulation of fecal metabolites in the autophagy pathway, and causing enteritis. Moreover, METH promoted intestinal inflammation by increasing the relative abundance of the pathogenic bacteria in the intestinal tract, and reduced intestinal TJ protein expression.
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Affiliation(s)
- Li-Jian Chen
- Department of Forensic Pathology, School of Forensic Medicine, Southern Medical University, Guangzhou, China
| | - Xu Zhi
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Kai-Kai Zhang
- Department of Forensic Pathology, School of Forensic Medicine, Southern Medical University, Guangzhou, China
| | - Li-Bin Wang
- Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Jia-Hao Li
- Department of Forensic Pathology, School of Forensic Medicine, Southern Medical University, Guangzhou, China
| | - Jia-Li Liu
- Department of Forensic Pathology, School of Forensic Medicine, Southern Medical University, Guangzhou, China
| | - Ling-Ling Xu
- Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China
| | | | - Xiao-Li Xie
- Department of Toxicology, School of Public Health, Southern Medical University, Guangzhou, China.
| | - Qi Wang
- Department of Forensic Pathology, School of Forensic Medicine, Southern Medical University, Guangzhou, China.
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41
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Han Y, Ding L, Cheng X, Zhao M, Zhao T, Guo L, Li X, Geng Y, Fan M, Liao H, Zhu L. Hypoxia Augments Cerebral Inflammation in a Dextran Sulfate Sodium-Induced Colitis Mouse Model. Front Cell Neurosci 2020; 14:611764. [PMID: 33362475 PMCID: PMC7756107 DOI: 10.3389/fncel.2020.611764] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/18/2020] [Indexed: 11/23/2022] Open
Abstract
The importance of hypoxia in the pathophysiology of inflammatory bowel disease (IBD) is increasingly being realized; also, hypoxia seems to be an important accelerator of brain inflammation, as has been reported by our group and others. IBD is a chronic intestinal disorder that leads to the development of inflammation, which is related to brain dysfunction. However, no studies have reported whether hypoxia is associated with IBD-induced neuroinflammation. Therefore, the objective of the present study was to determine whether hypoxia augments cerebral inflammation in a DSS-induced colitis mouse model. The mouse model was developed using 3% DSS for five days combined with exposure to hypoxic conditions (6,000 m) for two days. Mice were randomly divided into four groups: control group, DSS group, hypoxia group, and DSS plus hypoxia group. The results demonstrated that DSS combined with hypoxia resulted in up-regulation of colonic and plasmatic proinflammatory cytokines. Meanwhile, DSS plus hypoxia increased expression of Iba1, which is a marker of activated microglia, accompanied by increased expression of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) in the brain. Moreover, the expression of tight junction proteins, such as zonula occludens-1 (ZO-1), occludin, and claudin-5, was markedly downregulated. The current study provides new insight into how hypoxia exposure induces excessive inflammatory responses andpathophysiological consequences in the brain in a DSS-induced colitis model.
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Affiliation(s)
- Ying Han
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China.,Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China
| | - Liping Ding
- National Nanjing Center for Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Xiang Cheng
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Ming Zhao
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Tong Zhao
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Liang Guo
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Xinyang Li
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Yanan Geng
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China.,Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China
| | - Ming Fan
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China.,Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China
| | - Hong Liao
- National Nanjing Center for Drug Screening, China Pharmaceutical University, Nanjing, China
| | - Lingling Zhu
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China.,Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, China
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42
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Muehler A, Slizgi JR, Kohlhof H, Groeppel M, Peelen E, Vitt D. Clinical relevance of intestinal barrier dysfunction in common gastrointestinal diseases. World J Gastrointest Pathophysiol 2020; 11:114-130. [PMID: 33362939 PMCID: PMC7739114 DOI: 10.4291/wjgp.v11.i6.114] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/07/2020] [Accepted: 10/27/2020] [Indexed: 02/06/2023] Open
Abstract
The intestinal barrier is a complex and well-controlled physiological construct designed to separate luminal contents from the bowel wall. In this review, we focus on the intestinal barrier’s relationship with the host’s immune system interaction and the external environment, specifically the microbiome. The bowel allows the host to obtain nutrients vital to survival while protecting itself from harmful pathogens, luminal antigens, or other pro-inflammatory factors. Control over barrier function and the luminal milieu is maintained at the biochemical, cellular, and immunological level. However, disruption to this highly regulated environment can cause disease. Recent advances to the field have progressed the mechanistic understanding of compromised intestinal barrier function in the context of gastrointestinal pathology. There are numerous examples where bowel barrier dysfunction and the resulting interaction between the microbiome and the immune system has disease-triggering consequences. The purpose of this review is to summarize the clinical relevance of intestinal barrier dysfunction in common gastrointestinal and related diseases. This may help highlight the importance of restoring barrier function as a therapeutic mechanism of action in gastrointestinal pathology.
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43
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Han Y, Wang X, Cheng X, Zhao M, Zhao T, Guo L, Liu D, Wu K, Fan M, Shi M, Zhu L. Close Homolog of L1 Deficiency Exacerbated Intestinal Epithelial Barrier Function in Mouse Model of Dextran Sulfate Sodium-Induced Colitis. Front Physiol 2020; 11:584508. [PMID: 33240104 PMCID: PMC7677258 DOI: 10.3389/fphys.2020.584508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 10/12/2020] [Indexed: 12/02/2022] Open
Abstract
The cell adhesion molecule CHL1, which belongs to the immunoglobulin superfamily, functions in a variety of physiological and pathological processes, including neural development, tissue injury, and repair. We previously found that the loss of CHL1 exacerbated the dextran sulfate sodium (DSS)-induced colitis in mice. In the present study, we further addressed the role of CHL1 in mouse model of DSS-induced colitis and its’ potential mechanism. Colon tissues were collected from CHL1+/+, CHL1+/−, and CHL1−/− mice after DSS induction to investigate the effects of CHL1 on the development of colitis. The data showed that CHL1 was expressed in intestine tissue, and expression of CHL1 was increased by DSS-induced inflammation. CHL1 deficiency induced more pronounced colitis features, exacerbated inflammation, and damage to colonic tissues in DSS-induced mice. Moreover, colonic tissues of CHL1−/− mice showed a marked increase in neutrophil and macrophage infiltration, be accompanied by more severe damage to intestinal epithelial cells and higher fluorescein isothiocyanate (FITC) leakage. Our results revealed deficiency of CHL1 exacerbated DSS-induced colitis, and this pathogenesis was potentially mediated by disruption of intestinal barrier integrity, indicating that CHL1 may be an attractive therapeutic target for inflammatory bowel diseases (IBDs) in mice.
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Affiliation(s)
- Ying Han
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China.,Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Xiaomeng Wang
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Xiang Cheng
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Ming Zhao
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Tong Zhao
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Liang Guo
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Dan Liu
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, China
| | - Kuiwu Wu
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Ming Fan
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China.,Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China
| | - Ming Shi
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, China
| | - Lingling Zhu
- Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
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44
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Kobayashi T, Siegmund B, Le Berre C, Wei SC, Ferrante M, Shen B, Bernstein CN, Danese S, Peyrin-Biroulet L, Hibi T. Ulcerative colitis. Nat Rev Dis Primers 2020; 6:74. [PMID: 32913180 DOI: 10.1038/s41572-020-0205-x] [Citation(s) in RCA: 675] [Impact Index Per Article: 168.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/21/2020] [Indexed: 02/07/2023]
Abstract
Ulcerative colitis (UC) is a chronic inflammatory bowel disease of unknown aetiology affecting the colon and rectum. Multiple factors, such as genetic background, environmental and luminal factors, and mucosal immune dysregulation, have been suggested to contribute to UC pathogenesis. UC has evolved into a global burden given its high incidence in developed countries and the substantial increase in incidence in developing countries. An improved understanding of the mechanisms underlying UC has led to the emergence of new treatments. Since the early 2000s, anti-tumour necrosis factor (TNF) treatment has significantly improved treatment outcomes. Advances in medical treatments have enabled a paradigm shift in treatment goals from symptomatic relief to endoscopic and histological healing to achieve better long-term outcomes and, consequently, diagnostic modalities have also been improved to monitor disease activity more tightly. Despite these improvements in patient care, a substantial proportion of patients, for example, those who are refractory to medical treatment or those who develop colitis-associated colorectal dysplasia or cancer, still require restorative proctocolectomy. The development of novel drugs and improvement of the treatment strategy by implementing personalized medicine are warranted to achieve optimal disease control. However, delineating the aetiology of UC is necessary to ultimately achieve disease cure.
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Affiliation(s)
- Taku Kobayashi
- Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Tokyo, Japan.
| | - Britta Siegmund
- Division of Gastroenterology, Infectiology and Rheumatology, Charite-Universitatsmedizin, Berlin, Germany
| | - Catherine Le Berre
- Department of Gastroenterology, Nancy University Hospital, Inserm U1256 NGERE, Lorraine University, Lorraine, France
| | - Shu Chen Wei
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Marc Ferrante
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Bo Shen
- Center for Inflammatory Bowel Diseases, Columbia University Irving Medical Center-New York Presbyterian Hospital, New York, NY, USA
| | - Charles N Bernstein
- University of Manitoba IBD Clinical and Research Centre and Department of Internal Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Canada
| | - Silvio Danese
- Humanitas Clinical and Research Center - IRCCS - and Humanitas University, Department of Biomedical Sciences, Milan, Italy
| | - Laurent Peyrin-Biroulet
- Department of Gastroenterology, Nancy University Hospital, Inserm U1256 NGERE, Lorraine University, Lorraine, France
| | - Toshifumi Hibi
- Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Tokyo, Japan.
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45
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Cao X, Sun L, Lechuga S, Naydenov NG, Feygin A, Ivanov AI. A Novel Pharmacological Approach to Enhance the Integrity and Accelerate Restitution of the Intestinal Epithelial Barrier. Inflamm Bowel Dis 2020; 26:1340-1352. [PMID: 32266946 PMCID: PMC7441106 DOI: 10.1093/ibd/izaa063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Disruption of the gut barrier is an essential mechanism of inflammatory bowel diseases (IBDs) contributing to the development of mucosal inflammation. A hallmark of barrier disruption is the disassembly of epithelial adherens junctions (AJs) driven by decreased expression of a major AJ protein, E-cadherin. A group of isoxazole compounds, such as E-cadherin-upregulator (ECU) and ML327, were previously shown to stimulate E-cadherin expression in poorly differentiated human cancer cells. This study was designed to examine whether these isoxazole compounds can enhance and protect model intestinal epithelial barriers in vitro. METHODS The study was conducted using T84, SK-CO15, and HT-29 human colonic epithelial cell monolayers. Disruption of the epithelial barrier was induced by pro-inflammatory cytokines, tumor necrosis factor-α, and interferon-γ. Barrier integrity and epithelial junction assembly was examined using different permeability assays, immunofluorescence labeling, and confocal microscopy. Epithelial restitution was analyzed using a scratch wound healing assay. RESULTS E-cadherin-upregulator and ML327 treatment of intestinal epithelial cell monolayers resulted in several barrier-protective effects, including reduced steady-state epithelial permeability, inhibition of cytokine-induced barrier disruption and junction disassembly, and acceleration of epithelial wound healing. Surprisingly, these effects were not due to upregulation of E-cadherin expression but were mediated by multiple mechanisms including inhibition of junction protein endocytosis, attenuation of cytokine-induced apoptosis, and activation of promigratory Src and AKT signaling. CONCLUSIONS Our data highlight ECU and ML327 as promising compounds for developing new therapeutic strategies to protect the integrity and accelerate the restitution of the intestinal epithelial barrier in IBD and other inflammatory disorders.
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Affiliation(s)
- Xuelei Cao
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH
| | - Lei Sun
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH
| | - Susana Lechuga
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH
| | - Nayden G Naydenov
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH
| | - Alex Feygin
- School of Nursing, Virginia Commonwealth University, Richmond, VA
| | - Andrei I Ivanov
- Department of Inflammation and Immunity, Lerner Research Institute of Cleveland Clinic Foundation, Cleveland, OH,Address correspondence to: Andrei I. Ivanov, PhD, Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, NC22, Cleveland, OH 44195, USA. E-mail:
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Zhang Y, Thanou M, Vllasaliu D. Exploiting disease-induced changes for targeted oral delivery of biologics and nanomedicines in inflammatory bowel disease. Eur J Pharm Biopharm 2020; 155:128-138. [PMID: 32853696 DOI: 10.1016/j.ejpb.2020.08.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/21/2020] [Accepted: 08/18/2020] [Indexed: 02/07/2023]
Abstract
Inflammatory bowel disease (IBD) is a chronic and progressive disorder with destructive inflammation in the gastrointestinal tract (GIT). Biologics have changed the management of IBD, but have serious limitations, which is associated with their systemic administration via injection. Oral administration is the most accepted route of drug administration. However, the physiological barriers of the GIT pose significant challenges for oral administration of biologics, making this route of administration currently unavailable. The status of tissue barriers to oral drug delivery is altered in IBD. This may bring more challenges, but also present opportunities for oral delivery of biologics. This article provides an overview of disease-induced alterations of GIT barriers in IBD and discusses challenges, opportunities and commonly-utilised strategies for oral delivery of complex therapeutics, including biologics and nanomedicines.
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Affiliation(s)
- Yunyue Zhang
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences & Medicine, King's College London, London SE1 9NH, United Kingdom.
| | - Maya Thanou
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences & Medicine, King's College London, London SE1 9NH, United Kingdom.
| | - Driton Vllasaliu
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, Faculty of Life Sciences & Medicine, King's College London, London SE1 9NH, United Kingdom.
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Dual role of Ca 2+-activated Cl - channel transmembrane member 16A in lipopolysaccharide-induced intestinal epithelial barrier dysfunction in vitro. Cell Death Dis 2020; 11:404. [PMID: 32472021 PMCID: PMC7260209 DOI: 10.1038/s41419-020-2614-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 12/12/2022]
Abstract
Dysfunction of intestinal epithelial Cl− currents and channels have previously been reported in inflammatory intestinal diseases. However, the expression and function of the newly identified Ca2+-activated Cl− channel transmembrane member 16A (TMEM16A) in the intestinal epithelium is unclear. In this study, we investigated the effects of TMEM16A on intestinal epithelial barrier function in vitro. Intestinal epithelial barrier dysfunction was modeled by lipopolysaccharide (LPS)-induced cell damage in intestinal epithelial IEC-6 cells and the effects of TMEM16A knockdown and overexpression on cell apoptosis and tight junctions were studied. Corresponding mRNA and protein expression levels were measured by quantitative real-time polymerase chain reaction, western blotting, and immunofluorescence analysis, respectively. TMEM16A expression was significantly increased by LPS, possibly via a process involving the transcription factor nuclear factor-κB and both Th1 and Th2 cytokines. Low- and high-dose LPS dysregulated tight junctions (high-myosin light-chain kinase expression) and cell apoptosis-dependent cell barrier dysfunction, respectively. TMEM16A aggravated cell barrier dysfunction in IEC-6 cells pretreated with low-dose LPS by activating ERK1/MLCK signaling pathways, but protected against cell barrier dysfunction by activating ERK/Bcl-2/Bax signaling pathways in IEC-6 cells pretreated with high-dose LPS. We concluded that TMEM16A played a dual role in LPS-induced epithelial dysfunction in vitro. The present results indicated the complex regulatory mechanisms and targeting of TMEM16A may provide potential treatment strategies for intestinal epithelial barrier damage, as well as forming the basis for future studies of the expression and function of TMEM16A in normal and inflammatory intestinal diseases in vivo.
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Burgueño JF, Abreu MT. Epithelial Toll-like receptors and their role in gut homeostasis and disease. Nat Rev Gastroenterol Hepatol 2020; 17:263-278. [PMID: 32103203 DOI: 10.1038/s41575-019-0261-4] [Citation(s) in RCA: 212] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/20/2019] [Indexed: 02/07/2023]
Abstract
The human gastrointestinal tract is colonized by trillions of microorganisms that interact with the host to maintain structural and functional homeostasis. Acting as the interface between the site of the highest microbial burden in the human body and the richest immune compartment, a single layer of intestinal epithelial cells specializes in nutrient absorption, stratifies microorganisms to limit colonization of tissues and shapes the responses of the subepithelial immune cells. In this Review, we focus on the expression, regulation and functions of Toll-like receptors (TLRs) in the different intestinal epithelial lineages to analyse how epithelial recognition of bacteria participates in establishing homeostasis in the gut. In particular, we elaborate on the involvement of epithelial TLR signalling in controlling crypt dynamics, enhancing epithelial barrier integrity and promoting immune tolerance towards the gut microbiota. Furthermore, we comment on the regulatory mechanisms that fine-tune TLR-driven immune responses towards pathogens and revisit the role of TLRs in epithelial repair after injury. Finally, we discuss how dysregulation of epithelial TLRs can lead to the generation of dysbiosis, thereby increasing susceptibility to colitis and tumorigenesis.
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Affiliation(s)
- Juan F Burgueño
- Division of Gastroenterology, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Maria T Abreu
- Division of Gastroenterology, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, USA.
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Zhou Y, Yang S, Guo J, Dong H, Yin K, Huang WT, Yang R. In Vivo Imaging of Hypoxia Associated with Inflammatory Bowel Disease by a Cytoplasmic Protein-Powered Fluorescence Cascade Amplifier. Anal Chem 2020; 92:5787-5794. [PMID: 32192346 DOI: 10.1021/acs.analchem.9b05278] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Accurate and sensitive imaging of hypoxia associated with inflammatory bowel disease (IBD) is significant for the precise diagnosis and treatment of this disease, but it remains a challenge for traditional hypoxia-activatable fluorescence probes because of a more moderate hypoxic state during IBD than under other pathological conditions. To address this issue, herein, we designed a hypoxia-activatable and cytoplasmic protein-powered fluorescence cascade amplifier, named HCFA, to image hypoxia associated with IBD in vivo. In our design, a 4-aminobenzoic acid (azo)-modified mesoporous silica nanoparticle (MSN) was used as a container to load black hole quencher 2 (BHQ2) and cytoplasmic protein-binding squarylium dye (SQ); then, the β-cyclodextrin polymer (β-CDP) combined with azo through a host-guest interaction to form HCFA. Upon passive stagnation in the inflamed tissue of IBD, the azo band would be cleaved under a hypoxic microenvironment, and SQ was released to activate the fluorescence of HCFA. Moreover, the unconstrained SQ can bind with cytoplasmic protein to exhibit drastic fluorescence intensity enhancement, realizing the fluorescence signal amplification for imaging of hypoxia. When one takes advantage of the large load capacity of MSN and the unique property of SQ, HCFA can sense oxygen levels in the range of 0% to 10%. Meanwhile, the fluorescence imaging results demonstrate that HCFA can sensitively distinguish different levels of cellular hypoxia and monitor the variations of hypoxia in vivo, highlighting HCFA as a promising tool for the detection of hypoxia associated with IBD.
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Affiliation(s)
- Yibo Zhou
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, P. R. China
| | - Sheng Yang
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, P. R. China
| | - Jingru Guo
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, P. R. China
| | - Hao Dong
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, P. R. China
| | - Keyi Yin
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, P. R. China
| | - Wei Tao Huang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Microbial Molecular Biology, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P. R. China
| | - Ronghua Yang
- Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, Hunan 410114, P. R. China.,State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
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Łoniewska B, Adamek K, Węgrzyn D, Kaczmarczyk M, Skonieczna-Żydecka K, Clark J, Adler G, Tousty J, Uzar I, Tousty P, Łoniewski I. Analysis of Faecal Zonulin and Calprotectin Concentrations in Healthy Children During the First Two Years of Life. An Observational Prospective Cohort Study. J Clin Med 2020; 9:jcm9030777. [PMID: 32178435 PMCID: PMC7141325 DOI: 10.3390/jcm9030777] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/08/2020] [Accepted: 03/10/2020] [Indexed: 12/16/2022] Open
Abstract
Factors affecting the intestinal-barrier permeability of newborns, such as body mass index (BMI), nutrition and antibiotics, are assumed to affect intestinal-barrier permeability in the first two years of life. This study assessed 100 healthy, full-term newborns to 24 months old. Faecal zonulin/calprotectin concentrations were measured at 1, 6, 12, 24 months as gut-permeability markers. Zonulin concentrations increased between 1 and 12 months (medians: 114.41, 223.7 ng/mL; respectively), whereas calprotectin concentrations decreased between one and six months (medians: 149. 29, 109.28 µg/mL); both then stabilized (24 months: 256.9 ng/mL zonulin; 59.5 µg/mL calprotectin). In individual children, high levels at one month gave high levels at older ages (correlations: calprotectin: between 1 and 6 or 12 months: correlation coefficient (R) = 0.33, statistical significance (p) = 0.0095; R = 0.28, p = 0.032; zonulin: between 1 and 24 months: R = 0.32; p = 0.022, respectively). Parameters which gave marker increases: antibiotics during pregnancy (calprotectin; six months: by 80%, p = 0.038; 12 months: by 48%, p = 0.028); vaginal birth (calprotectin: 6 months: by 140%, p = 0.005); and > 5.7 pregnancy-BMI increase (zonulin: 12 months: by 74%, p = 0.049). Conclusions: “Closure of the intestines” is spread over time and begins between the sixth and twelfth month of life. Antibiotic therapy, BMI increase > 5.7 during pregnancy and vaginal birth are associated with increased intestinal permeability during the first two years of life. Stool zonulin and calprotectin concentrations were much higher compared with previous measurements at older ages; clinical interpretation and validation are needed (no health associations found).
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Affiliation(s)
- Beata Łoniewska
- Department of Neonatal Diseases, Pomeranian Medical University, Szczecin 70-111, Poland; (K.A.); (D.W.); (J.T.)
- Correspondence: ; Tel.: +48-(91)-466-1375
| | - Karolina Adamek
- Department of Neonatal Diseases, Pomeranian Medical University, Szczecin 70-111, Poland; (K.A.); (D.W.); (J.T.)
| | - Dagmara Węgrzyn
- Department of Neonatal Diseases, Pomeranian Medical University, Szczecin 70-111, Poland; (K.A.); (D.W.); (J.T.)
| | - Mariusz Kaczmarczyk
- Department of Clinical and Molecular Biochemistry, Pomeranian Medical University, Szczecin 70-111, Poland; (M.K.); (J.C.)
| | - Karolina Skonieczna-Żydecka
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University, Szczecin 71-460, Poland; (K.S.-Ż.); (I.Ł.)
| | - Jeremy Clark
- Department of Clinical and Molecular Biochemistry, Pomeranian Medical University, Szczecin 70-111, Poland; (M.K.); (J.C.)
| | - Grażyna Adler
- Department of Studies in Anthropogenetics and Biogerontology, Pomeranian Medical University, Szczecin 71-210, Poland;
| | - Joanna Tousty
- Department of Neonatal Diseases, Pomeranian Medical University, Szczecin 70-111, Poland; (K.A.); (D.W.); (J.T.)
| | - Izabela Uzar
- Department of General Pharmacology and Pharmacoeconomics, Pomeranian Medical University, Szczecin 71-230, Poland;
| | - Piotr Tousty
- Department of Obstetrics and Gynecology, Pomeranian Medical University, Szczecin 70-111, Poland;
| | - Igor Łoniewski
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University, Szczecin 71-460, Poland; (K.S.-Ż.); (I.Ł.)
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