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Koelink PJ, Gómez-Mellado VE, Duijst S, van Roest M, Meisner S, Ho-Mok KS, Frank S, Appelman BS, Bloemendaal LT, Vogel GF, van de Graaf SFJ, Bosma PJ, Oude Elferink RPJ, Wildenberg ME, Paulusma CC. The Phospholipid Flippase ATP8B1 is Involved in the Pathogenesis of Ulcerative Colitis via Establishment of Intestinal Barrier Function. J Crohns Colitis 2024; 18:1134-1146. [PMID: 38366839 PMCID: PMC11302967 DOI: 10.1093/ecco-jcc/jjae024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/30/2024] [Accepted: 02/15/2024] [Indexed: 02/18/2024]
Abstract
AIMS Patients with mutations in ATP8B1 develop progressive familial intrahepatic cholestasis type 1 [PFIC1], a severe liver disease that requires life-saving liver transplantation. PFIC1 patients also present with gastrointestinal problems, including intestinal inflammation and diarrhoea, which are aggravated after liver transplantation. Here we investigate the intestinal function of ATP8B1 in relation to inflammatory bowel diseases. METHODS ATP8B1 expression was investigated in intestinal samples of patients with Crohn's disease [CD] or ulcerative colitis [UC] as well as in murine models of intestinal inflammation. Colitis was induced in ATP8B1-deficient mice with dextran sodium sulphate [DSS] and intestinal permeability was investigated. Epithelial barrier function was assessed in ATP8B1 knockdown Caco2-BBE cells. Co-immunoprecipitation experiments were performed in Caco2-BBE cells overexpressing ATP8B1-eGFP. Expression and localization of ATP8B1 and tight junction proteins were investigated in cells and in biopsies of UC and PFIC1 patients. RESULTS ATP8B1 expression was decreased in UC and DSS-treated mice, and was associated with a decreased tight junctional pathway transcriptional programme. ATP8B1-deficient mice were extremely sensitive to DSS-induced colitis, as evidenced by increased intestinal barrier leakage. ATP8B1 knockdown cells showed delayed barrier establishment that affected Claudin-4 [CLDN4] levels and localization. CLDN4 immunohistochemistry showed a tight junctional staining in control tissue, whereas in UC and intestinal PFIC1 samples, CLDN4 was not properly localized. CONCLUSION ATP8B1 is important in the establishment of the intestinal barrier. Downregulation of ATP8B1 levels in UC, and subsequent altered localization of tight junctional proteins, including CLDN4, might therefore be an important mechanism in UC pathophysiology.
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Affiliation(s)
- Pim J Koelink
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - Valentina E Gómez-Mellado
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - Suzanne Duijst
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - Manon van Roest
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - Sander Meisner
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - Kam S Ho-Mok
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - Sabrina Frank
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
| | - Babette S Appelman
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
| | - Lysbeth ten Bloemendaal
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - Georg F Vogel
- Department of Paediatrics I, Medical University of Innsbruck, 6020 Innsbruck, Austria
- Institute of Cell Biology, Biocenter, Medical University of Innsbruck, 6020 Innsbruck, Austria
| | - Stan F J van de Graaf
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Piter J Bosma
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Ronald P J Oude Elferink
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Manon E Wildenberg
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
- Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Coen C Paulusma
- Amsterdam University Medical Centers, University of Amsterdam, Tytgat Institute for Liver and Intestinal Research, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
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2
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Ballanti M, Antonetti L, Mavilio M, Casagrande V, Moscatelli A, Pietrucci D, Teofani A, Internò C, Cardellini M, Paoluzi O, Monteleone G, Lefebvre P, Staels B, Mingrone G, Menghini R, Federici M. Decreased circulating IPA levels identify subjects with metabolic comorbidities: A multi-omics study. Pharmacol Res 2024; 204:107207. [PMID: 38734193 DOI: 10.1016/j.phrs.2024.107207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/05/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
In recent years several experimental observations demonstrated that the gut microbiome plays a role in regulating positively or negatively metabolic homeostasis. Indole-3-propionic acid (IPA), a Tryptophan catabolic product mainly produced by C. Sporogenes, has been recently shown to exert either favorable or unfavorable effects in the context of metabolic and cardiovascular diseases. We performed a study to delineate clinical and multiomics characteristics of human subjects characterized by low and high IPA levels. Subjects with low IPA blood levels showed insulin resistance, overweight, low-grade inflammation, and features of metabolic syndrome compared to those with high IPA. Metabolomics analysis revealed that IPA was negatively correlated with leucine, isoleucine, and valine metabolism. Transcriptomics analysis in colon tissue revealed the enrichment of several signaling, regulatory, and metabolic processes. Metagenomics revealed several OTU of ruminococcus, alistipes, blautia, butyrivibrio and akkermansia were significantly enriched in highIPA group while in lowIPA group Escherichia-Shigella, megasphera, and Desulfovibrio genus were more abundant. Next, we tested the hypothesis that treatment with IPA in a mouse model may recapitulate the observations of human subjects, at least in part. We found that a short treatment with IPA (4 days at 20/mg/kg) improved glucose tolerance and Akt phosphorylation in the skeletal muscle level, while regulating blood BCAA levels and gene expression in colon tissue, all consistent with results observed in human subjects stratified for IPA levels. Our results suggest that treatment with IPA may be considered a potential strategy to improve insulin resistance in subjects with dysbiosis.
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Affiliation(s)
- Marta Ballanti
- Center for Atherosclerosis and Internal Medicine Unit, Policlinico Tor Vergata University Hospital, Via Oxford 81, Rome 00133, Italy; Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy
| | - Lorenzo Antonetti
- Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy
| | - Maria Mavilio
- Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy
| | - Viviana Casagrande
- Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy
| | - Alessandro Moscatelli
- Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy; Laboratory of Neuromotor Physiology, Santa Lucia Foundation IRCCS, Rome, 00179, Italy
| | - Daniele Pietrucci
- Department for Innovation in Biological, Agro-Food and Forest Systems (DIBAF), University of Tuscia, 01100 Viterbo, Italy
| | - Adelaide Teofani
- Department of Biology, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Chiara Internò
- Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy
| | - Marina Cardellini
- Center for Atherosclerosis and Internal Medicine Unit, Policlinico Tor Vergata University Hospital, Via Oxford 81, Rome 00133, Italy; Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy
| | - Omero Paoluzi
- Unit of Gastroenterology, Policlinico Tor Vergata University Hospital, Via Oxford 81, 00133 Rome, Italy
| | - Giovanni Monteleone
- Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy; Unit of Gastroenterology, Policlinico Tor Vergata University Hospital, Via Oxford 81, 00133 Rome, Italy
| | - Philippe Lefebvre
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011 EGID, Lille France
| | - Bart Staels
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011 EGID, Lille France
| | - Geltrude Mingrone
- Department of Internal Medicine, Catholic University, 00168 Rome, Italy; Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; Diabetes and Nutritional Sciences, Hodgkin Building, Guy's Campus, King's College London, London WC2R 2LS, UK
| | - Rossella Menghini
- Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy
| | - Massimo Federici
- Center for Atherosclerosis and Internal Medicine Unit, Policlinico Tor Vergata University Hospital, Via Oxford 81, Rome 00133, Italy; Department of Systems Medicine, University of Rome Tor Vergata, Rome 00133, Italy.
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3
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Vivacqua G, Mancinelli R, Leone S, Vaccaro R, Garro L, Carotti S, Ceci L, Onori P, Pannarale L, Franchitto A, Gaudio E, Casini A. Endoplasmic reticulum stress: A possible connection between intestinal inflammation and neurodegenerative disorders. Neurogastroenterol Motil 2024; 36:e14780. [PMID: 38462652 DOI: 10.1111/nmo.14780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 01/27/2024] [Accepted: 03/03/2024] [Indexed: 03/12/2024]
Abstract
BACKGROUND Different studies have shown the key role of endoplasmic reticulum (ER) stress in autoimmune and chronic inflammatory disorders, as well as in neurodegenerative diseases. ER stress leads to the formation of misfolded proteins which affect the secretion of different cell types that are crucial for the intestinal homeostasis. PURPOSE In this review, we discuss the role of ER stress and its involvement in the development of inflammatory bowel diseases, chronic conditions that can cause severe damage of the gastrointestinal tract, focusing on the alteration of Paneth cells and goblet cells (the principal secretory phenotypes of the intestinal epithelial cells). ER stress is also discussed in the context of neurodegenerative diseases, in which protein misfolding represents the signature mechanism. ER stress in the bowel and consequent accumulation of misfolded proteins might represent a bridge between bowel inflammation and neurodegeneration along the gut-to-brain axis, affecting intestinal epithelial homeostasis and the equilibrium of the commensal microbiota. Targeting intestinal ER stress could foster future studies for designing new biomarkers and new therapeutic approaches for neurodegenerative disorders.
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Affiliation(s)
- Giorgio Vivacqua
- Integrated Research Center (PRAAB), Campus Biomedico University of Roma, Rome, Italy
| | - Romina Mancinelli
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Stefano Leone
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Rosa Vaccaro
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Ludovica Garro
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Simone Carotti
- Integrated Research Center (PRAAB), Campus Biomedico University of Roma, Rome, Italy
| | - Ludovica Ceci
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Paolo Onori
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Luigi Pannarale
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Antonio Franchitto
- Division of Health Sciences, Department of Movement, Human and Health Sciences, University of Rome 'Foro Italico', Rome, Italy
| | - Eugenio Gaudio
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Arianna Casini
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
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4
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Zeng J, Lu QQ, Du XL, Yuan L, Yang XJ. Toll-like receptor 3 signaling drives enteric glial cells against dextran sulfate sodium-induced colitis in mice. J Mol Histol 2024; 55:201-210. [PMID: 38376631 DOI: 10.1007/s10735-024-10184-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 02/11/2024] [Indexed: 02/21/2024]
Abstract
The activation of toll-like receptor 3 (TLR3) has been reported to attenuate astrocytes injury in central nervous system, but its effect on enteric glial cells (EGCs) remains unknown. Here, we confirmed that the residence of EGCs was regulated by TLR3 agonist (polyinosinic-polycytidylic acid, PIC) or TLR3/dsRNA complex inhibitor in dextran sulfate sodium (DSS)-induced mice. In vitro, TLR3 signaling prevented apoptosis in EGCs and drove the secretion of EGCs-derived glial cell line-derived neurotrophic factor, 15-hydroxyeicosatetraenoic acid and S-nitrosoglutathione. PIC preconditioning enhanced the protective effects of EGCs against the dysfunction of intestinal epithelial barrier and the development of colitis in DSS-induced mice. Interestingly, PIC stimulation also promoted the effects of EGCs on converting macrophages to an M2-like phenotype and regulating the levels of inflammatory cytokines, including IL-1β, TNF-α and IL-10, in DSS-induced mice. These findings imply that TLR3 signaling in EGCs may provide a potential target for the prevention and treatment of colitis.
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Affiliation(s)
- Jian Zeng
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China.
| | - Qiong-Qiong Lu
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Xiao-Long Du
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Ling Yuan
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Xiao-Jun Yang
- Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
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5
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Schreiber F, Balas I, Robinson MJ, Bakdash G. Border Control: The Role of the Microbiome in Regulating Epithelial Barrier Function. Cells 2024; 13:477. [PMID: 38534321 DOI: 10.3390/cells13060477] [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: 02/16/2024] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/28/2024] Open
Abstract
The gut mucosal epithelium is one of the largest organs in the body and plays a critical role in regulating the crosstalk between the resident microbiome and the host. To this effect, the tight control of what is permitted through this barrier is of high importance. There should be restricted passage of harmful microorganisms and antigens while at the same time allowing the absorption of nutrients and water. An increased gut permeability, or "leaky gut", has been associated with a variety of diseases ranging from infections, metabolic diseases, and inflammatory and autoimmune diseases to neurological conditions. Several factors can affect gut permeability, including cytokines, dietary components, and the gut microbiome. Here, we discuss how the gut microbiome impacts the permeability of the gut epithelial barrier and how this can be harnessed for therapeutic purposes.
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6
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Turksen K. Tissue barriers and their impact. Tissue Barriers 2024:2301799. [PMID: 38226587 DOI: 10.1080/21688370.2024.2301799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 12/22/2023] [Indexed: 01/17/2024] Open
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7
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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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8
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Li ZY, Lin LH, Liang HJ, Li YQ, Zhao FQ, Sun TY, Liu ZY, Zhu JY, Gu F, Xu JN, Hao QY, Zhou DS, Zhai HH. Lycium barbarum polysaccharide alleviates DSS-induced chronic ulcerative colitis by restoring intestinal barrier function and modulating gut microbiota. Ann Med 2023; 55:2290213. [PMID: 38061697 PMCID: PMC10836275 DOI: 10.1080/07853890.2023.2290213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/26/2023] [Indexed: 12/18/2023] Open
Abstract
PURPOSE This study examined the protective effects and mechanism of Lycium barbarum polysaccharides (LBP) in the context of intestinal barrier function and intestinal microbiota in mice with dextran sulfate sodium (DSS)-induced chronic ulcerative colitis (UC). METHODS C57BL/6J male mice were assigned to a standard normal diet without DSS (control group), a normal diet with DSS (DSS group, 2% DSS given discontinuously for 3 weeks) or a normal diet supplemented with LBP (1% dry feed weight, LBP group, 2% DSS given discontinuously for 3 weeks) for a total of 8 weeks, at which point colonic tissues and caecal contents were collected. RESULTS LBP exerted a significant effect against colitis by increasing body weight, colon length, DAI and histopathological scores. LBP inhibited proinflammatory cytokines (IL-1β, IL-6, iNOS and TNF-α) expression, improved anti-inflammatory cytokine (IL-10) expression, promoted the expression of tight junction proteins (Occludin and ZO-1) via nuclear factor erythroid 2-related factor 2 (Nrf2) activation and decreased Claudin-2 expression to maintain the intestinal mucosal barrier. In addition, the abundances of some probiotics (Ruminococcaceae, Lactobacillus, Butyricicoccus, and Akkermansia) were decreased with DSS treatment but increased obviously with LBP treatment. And LBP reduced the abundance of conditional pathogens associated with UC (Mucispirillum and Sutterella). Furthermore, LBP improved the production of short-chain fatty acids (SCFAs), including acetic acid, propionic acid, butyric acid and isobutyric acid. CONCLUSION LBP can alleviate DSS-induced UC by regulating inflammatory cytokines and tight junction proteins. Moreover, LBP promotes probiotics, suppresses conditional pathogens and increases SCFAs production, showing a strong prebiotic effect.
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Affiliation(s)
- Zhi-Yu Li
- Department of Gastroenterology, Beijing Friendship Hospital Affiliated to Capital Medical University, Beijing, China
- National Clinical Research Center for Digestive Diseases, Beijing, China
| | - Lan-Hui Lin
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Department of Gastroenterology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - He-Jun Liang
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Department of Gastroenterology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Ya-Qi Li
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Fu-Qian Zhao
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Ting-Yi Sun
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Zi-Yu Liu
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Department of Gastroenterology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Jing-Yi Zhu
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Department of Gastroenterology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Feng Gu
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Department of Gastroenterology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Jia-Ning Xu
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Department of Gastroenterology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - Qi-Yuan Hao
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Department of Gastroenterology, Xuanwu Hospital Capital Medical University, Beijing, China
| | - De-Shan Zhou
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Hui-Hong Zhai
- National Clinical Research Center for Digestive Diseases, Beijing, China
- Department of Gastroenterology, Xuanwu Hospital Capital Medical University, Beijing, China
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9
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Xu W, Ishii Y, Rini DM, Yamamoto Y, Suzuki T. Microbial metabolite n-butyrate upregulates intestinal claudin-23 expression through SP1 and AMPK pathways in mouse colon and human intestinal Caco-2 cells. Life Sci 2023; 329:121952. [PMID: 37467886 DOI: 10.1016/j.lfs.2023.121952] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/07/2023] [Accepted: 07/14/2023] [Indexed: 07/21/2023]
Abstract
AIMS Regulation of the intestinal barrier is closely related to intestinal microbial metabolism. This study investigated the role of intestinal microflora in the regulation of the tight junction (TJ) barrier in epithelial cells, focusing on the microbial metabolite n-butyrate, a major short-chain fatty acid, using mice and human intestinal Caco-2 cells. MATERIALS AND METHODS Whole transcriptome analysis with RNA sequencing and quantitative reverse transcription-polymerase chain reaction (qRT-PCR) were performed in the colon of germ-free (GF) and specific pathogen-free (SPF) mice. Claudin-23 expression was examined by qRT-PCR, immunoblotting, and immunofluorescence in Caco-2 cells treated with n-butyrate. Luciferase reporter assay was performed to examine the effect of n-butyrate on claudin-23 transcriptional activity. The siRNA targeting the transcription factor SP1 and pharmacological inhibitor of AMPK were used in combination. TJ permeability was examined in canine kidney MDCKII cells stably expressing human claudin-23. KEY FINDINGS Cldn23 mRNA expression was downregulated in the colon of GF mice (0.6-fold) compared to that in SPF mice. n-Butyrate upregulated claudin-23 mRNA (1.7-fold) and protein (2.1-fold) expression as well as increased the transcriptional activity (15-fold) of CLDN23 in Caco-2 cells. The n-butyrate-mediated increase in claudin-23 expression and transcriptional activity was reduced by inhibition of SP1 and AMPK. Exogenously expressed human claudin-23 in MDCKII cells did not affect TJ permeability to ions and macromolecules. SIGNIFICANCE n-Butyrate regulates intestinal claudin-23 expression through the SP1 and AMPK pathways. This mechanism may be involved in the beneficial effects of n-butyrate-mediated intestinal homeostasis.
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Affiliation(s)
- Wenxi Xu
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi, Hiroshima 739-8528, Japan
| | - Yoshiki Ishii
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi, Hiroshima 739-8528, Japan
| | - Dina Mustika Rini
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi, Hiroshima 739-8528, Japan; Department of Food Technology, Faculty of Engineering, Universitas Pembangunan Nasional "Veteran" Jawa Timur, Surabaya 60294, Indonesia
| | - Yoshinari Yamamoto
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi, Hiroshima 739-8528, Japan
| | - Takuya Suzuki
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi, Hiroshima 739-8528, Japan.
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10
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Krug SM. Solving the Puzzle: Molecular Research in Inflammatory Bowel Diseases. Int J Mol Sci 2023; 24:13389. [PMID: 37686195 PMCID: PMC10487909 DOI: 10.3390/ijms241713389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023] Open
Abstract
Inflammatory bowel disease (IBD) encompasses chronic idiopathic relapsing and remitting gastrointestinal autoimmune diseases characterized by chronic inflammatory disorders of complex etiology, posing clinical challenges due to their often therapy-refractory nature [...].
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Affiliation(s)
- Susanne M Krug
- Clinical Physiology/Nutritional Medicine, Charité-Universitätsmedizin Berlin, 12203 Berlin, Germany
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11
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Rollins J, Worthington T, Dransfield A, Whitney J, Stanford J, Hooke E, Hobson J, Wengler J, Hope S, Mizrachi D. Expression of Cell-Adhesion Molecules in E. coli: A High Throughput Screening to Identify Paracellular Modulators. Int J Mol Sci 2023; 24:9784. [PMID: 37372932 DOI: 10.3390/ijms24129784] [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: 05/17/2023] [Revised: 05/31/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
Cell-adhesion molecules (CAMs) are responsible for cell-cell, cell-extracellular matrix, and cell-pathogen interactions. Claudins (CLDNs), occludin (OCLN), and junctional adhesion molecules (JAMs) are CAMs' components of the tight junction (TJ), the single protein structure tasked with safeguarding the paracellular space. The TJ is responsible for controlling paracellular permeability according to size and charge. Currently, there are no therapeutic solutions to modulate the TJ. Here, we describe the expression of CLDN proteins in the outer membrane of E. coli and report its consequences. When the expression is induced, the unicellular behavior of E. coli is replaced with multicellular aggregations that can be quantified using Flow Cytometry (FC). Our method, called iCLASP (inspection of cell-adhesion molecules aggregation through FC protocols), allows high-throughput screening (HTS) of small-molecules for interactions with CAMs. Here, we focused on using iCLASP to identify paracellular modulators for CLDN2. Furthermore, we validated those compounds in the mammalian cell line A549 as a proof-of-concept for the iCLASP method.
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Affiliation(s)
- Jay Rollins
- Department of Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
| | - Tyler Worthington
- Department of Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
| | - Allison Dransfield
- Department of Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
| | - Jordan Whitney
- Department of Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
| | - Jordan Stanford
- Department of Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
| | - Emily Hooke
- Department of Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
| | - Joseph Hobson
- Department of Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
| | - Jacob Wengler
- Department of Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
| | - Sandra Hope
- Department of Microbiology and Molecular Biology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
| | - Dario Mizrachi
- Department of Cell Biology and Physiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA
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