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Yadav S, Sapra L, Srivastava RK. Polysaccharides to postbiotics: Nurturing bone health via modulating "gut-immune axis". Int J Biol Macromol 2024; 278:134655. [PMID: 39128750 DOI: 10.1016/j.ijbiomac.2024.134655] [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: 01/11/2024] [Revised: 08/06/2024] [Accepted: 08/08/2024] [Indexed: 08/13/2024]
Abstract
The increasing prevalence of individuals affected by bone pathologies globally has sparked catastrophic concerns. Ankylosing spondylitis, osteoporosis, rheumatoid arthritis, osteoarthritis, and fractures alone impact an estimated 1.71 billion people worldwide. The gut microbiota plays a crucial role in interacting with the host through the synthesis of a diverse range of metabolites called gut-associated metabolites (GAMs), which originate from external dietary substrates or endogenous host compounds. Many metabolic disorders have been linked to alterations in the gut microbiota's activity and composition. The development of metabolic illnesses has been linked to certain microbiota-derived metabolites, such as branched-chain amino acids, bile acids, short-chain fatty acids, tryptophan, trimethylamine N-oxide, and indole derivatives. Moreover, the modulation of gut microbiota through biotics (prebiotics, probiotics and postbiotics) presents a promising avenue for therapeutic intervention. Biotics selectively promote the growth of beneficial gut bacteria, thereby enhancing the production of GAMs with potential beneficial effects on bone metabolism. Understanding the intricate interplay between GAMs, and bone-associated genes through molecular informatics holds significant promise for early diagnosis, prognosis, and novel treatment strategies for various bone disorders.
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Affiliation(s)
- Sumedha Yadav
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Leena Sapra
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Rupesh K Srivastava
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India.
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2
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Arumugam P, Saha K, Nighot P. Intestinal Epithelial Tight Junction Barrier Regulation by Novel Pathways. Inflamm Bowel Dis 2024:izae232. [PMID: 39321109 DOI: 10.1093/ibd/izae232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Indexed: 09/27/2024]
Abstract
Intestinal epithelial tight junctions (TJs), a dynamically regulated barrier structure composed of occludin and claudin family of proteins, mediate the interaction between the host and the external environment by allowing selective paracellular permeability between the luminal and serosal compartments of the intestine. TJs are highly dynamic structures and can undergo constant architectural remodeling in response to various external stimuli. This is mediated by an array of intracellular signaling pathways that alters TJ protein expression and localization. Dysfunctional regulation of TJ components compromising the barrier homeostasis is an important pathogenic factor for pathological conditions including inflammatory bowel disease (IBD). Previous studies have elucidated the significance of TJ barrier integrity and key regulatory mechanisms through various in vitro and in vivo models. In recent years, considerable efforts have been made to understand the crosstalk between various signaling pathways that regulate formation and disassembly of TJs. This review provides a comprehensive view on the novel mechanisms that regulate the TJ barrier and permeability. We discuss the latest evidence on how ion transport, cytoskeleton and extracellular matrix proteins, signaling pathways, and cell survival mechanism of autophagy regulate intestinal TJ barrier function. We also provide a perspective on the context-specific outcomes of the TJ barrier modulation. The knowledge on the diverse TJ barrier regulatory mechanisms will provide further insights on the relevance of the TJ barrier defects and potential target molecules/pathways for IBD.
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Affiliation(s)
- Priya Arumugam
- Division of Gastroenterology and Hepatology, Department of Medicine, Pennsylvania State College of Medicine, Hershey, PA, USA
| | - Kushal Saha
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Prashant Nighot
- Division of Gastroenterology and Hepatology, Department of Medicine, Pennsylvania State College of Medicine, Hershey, PA, USA
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3
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Virtanen SM, Peltonen EJ, Hakola L, Niinistö S, Takkinen HM, Ahonen S, Åkerlund M, Uusitalo U, Mattila M, Salo TEI, Ilonen J, Toppari J, Veijola R, Knip M, Nevalainen J. Food Consumption and Risk of Islet Autoimmunity and Type 1 Diabetes in Children at Increased Genetic Susceptibility for Type 1 Diabetes. J Nutr 2024:S0022-3166(24)01035-6. [PMID: 39313195 DOI: 10.1016/j.tjnut.2024.09.018] [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: 07/16/2024] [Revised: 08/28/2024] [Accepted: 09/18/2024] [Indexed: 09/25/2024] Open
Abstract
BACKGROUND Prospective longitudinal evidence considering the entire childhood food consumption in relation to development of islet autoimmunity (IA or) type 1 diabetes is lacking. OBJECTIVES We studied the associations of consumption of various foods and their combinations with IA and type 1 diabetes risk. METHODS Children with genetic susceptibility to type 1 diabetes born in 1996-2004 were followed from birth up to 6 years of age in the prospective birth cohort Type 1 Diabetes Prediction and Prevention Study (n=5674). Exposure variables included 34 food groups covering the entire diet based on repeated 3-day food records at age 3 months to 6 years. Endpoints were islet cell antibodies (ICA) plus biochemical IA (n=247), multiple biochemical IA (n=206), and type 1 diabetes (n=94). We analyzed associations between longitudinally observed foods and the risk of IA/type 1 diabetes using a Bayesian approach to joint models in one-food and multi-food models adjusted for energy intake, sex, human leukocyte antigen (HLA) genotype, and familial diabetes. RESULTS The final multi-food model for ICA plus biochemical IA included oats [hazard ratio (HR) 1.09, 95% credible interval (CI) 1.04-1.14], banana (HR 1.07, 95% CI 1.03-1.11), and cruciferous vegetables (HR 0.83, 95% CI 0.73-0.94). The final model for multiple biochemical IA included, in addition to above-mentioned foods, fermented dairy (HR 1.42, 95% CI 1.12-1.78) and wheat (HR 1.10, 95% CI 1.03-1.18). The final multi-food model for type 1 diabetes included rye (HR 1.27, 95% CI 1.07-1.50), oats (HR 1.15, 95% CI 1.03-1.26), fruits (HR 1.05, 95% CI 1.01-1.09), and berries (HR 0.67, 95% CI 0.50-0.93). CONCLUSIONS Higher consumption of oats, gluten-containing cereals, and fruits was associated with increased and that of cruciferous vegetables with decreased risk of several type 1 diabetes related endpoints when considering all the foods in combination. Further etiological and mechanistic studies are warranted.
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Affiliation(s)
- Suvi M Virtanen
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland; Tampere University Hospital, Wellbeing Services County of Pirkanmaa; Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland.
| | - Essi J Peltonen
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland; Tampere University Hospital, Wellbeing Services County of Pirkanmaa
| | - Leena Hakola
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland; Tampere University Hospital, Wellbeing Services County of Pirkanmaa; Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Sari Niinistö
- Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Hanna-Mari Takkinen
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland; Tampere University Hospital, Wellbeing Services County of Pirkanmaa; Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Suvi Ahonen
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland; Tampere University Hospital, Wellbeing Services County of Pirkanmaa; Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Mari Åkerlund
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland; Tampere University Hospital, Wellbeing Services County of Pirkanmaa; Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Ulla Uusitalo
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Markus Mattila
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland; Tampere University Hospital, Wellbeing Services County of Pirkanmaa; Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Tuuli E I Salo
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland; Department of Public Health and Welfare, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Jorma Ilonen
- Immunogenetics Laboratory, Institute of Biomedicine, University of Turku, Turku, Finland
| | - Jorma Toppari
- Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology, and Centre for Population Health Research, University of Turku, Turku, Finland; Turku University Hospital, Department of Pediatrics, Turku, Finland
| | - Riitta Veijola
- Department of Paediatrics, Research Unit of Clinical Medicine, Medical Research Centre, University of Oulu, Oulu, Finland; Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
| | - Mikael Knip
- Research Program for Clinical and Molecular Metabolism, Faculty of Medicine, University of Helsinki, Helsinki, Finland; Tampere University Hospital, Department of Pediatrics, Tampere, Finland
| | - Jaakko Nevalainen
- Faculty of Social Sciences, Unit of Health Sciences, Tampere University, Tampere, Finland
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4
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Stockinger B, Diaz OE, Wincent E. The influence of AHR on immune and tissue biology. EMBO Mol Med 2024:10.1038/s44321-024-00135-w. [PMID: 39242971 DOI: 10.1038/s44321-024-00135-w] [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: 05/03/2024] [Revised: 08/16/2024] [Accepted: 08/19/2024] [Indexed: 09/09/2024] Open
Abstract
The aryl hydrocarbon receptor is a ligand dependent transcription factor which functions as an environmental sensor. Originally discovered as the sensor for man made pollutants such as 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) it has recently gained prominence as an important mediator for environmental triggers via the diet or microbiota which influences many physiological functions in different cell types and tissues across the body. Notably AHR activity contributes to prevent excessive inflammation following tissue damage in barrier organs such as skin, lung or gut which has received wide attention in the past decade. In this review we will focus on emerging common AHR functions across cell types and tissues and discuss ongoing issues that confound the understanding of AHR physiology. Furthermore, we will discuss the need for deeper molecular understanding of the functional activity of AHR in different contexts with respect to development of potential therapeutic applications.
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Affiliation(s)
| | - Oscar E Diaz
- The Francis Crick Institute, London, United Kingdom
| | - Emma Wincent
- Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
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5
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Wang S, Xu Y, Wang L, Lin J, Xu C, Zhao X, Zhang H. TolDC Restores the Balance of Th17/Treg via Aryl Hydrocarbon Receptor to Attenuate Colitis. Inflamm Bowel Dis 2024; 30:1546-1555. [PMID: 38431309 DOI: 10.1093/ibd/izae022] [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: 07/27/2023] [Indexed: 03/05/2024]
Abstract
BACKGROUND Tolerogenic dendritic cells (TolDCs) have been evidenced to trigger regulatory T cell's (Treg's) differentiation and be involved in the pathogenesis of Crohn's disease (CD). Aryl hydrocarbon receptor (AhR) plays a crucial role in the differentiation of TolDCs, although the mechanism remains vague. This study aimed to evaluate the role of AhR in TolDCs formation, which may affect Th17/Treg balance in CD. METHODS Colon biopsy specimens were obtained from healthy controls and patients with CD. Wild type (WT) and AhR-/- mice were induced colitis by drinking dextran sulphate sodium (DSS) with or without 6-formylindolo 3,2-b carbazole (FICZ) treatment. Wild type and AhR-/- bone marrow-derived cells (BMDCs) were cultured under TolDCs polarization condition. Ratios of DCs surface markers were determined by flow cytometry. Enzyme-linked immunosorbent assay (ELISA) was performed to quantify the levels of interleukin (IL)-1β, transforming growth factor (TGF)-β and IL-10. Tolerogenic dendritic cells differentiated from BMDCs of WT or AhR-/- mice were adoptively transferred to DSS-induced WT colitis mice. RESULTS Patients with CD showed less AhR expression and activation in their inflamed colon regions. Compared with WT mice, AhR-/- mice experienced more severe colitis. Tolerogenic dendritic cells and Tregs were both decreased in the colon of AhR-/- colitis mice, while Th17 cells were upregulated. In vitro, compared with WT DCs, AhR-deficient DCs led to less TolDC formation. Furthermore, intestinal inflammation in WT colitis mice, which transferred with AhR-/- TolDCs, showed no obvious improvement compared with those transferred with WT TolDCs, as evidenced by no rescues of Th17/Treg balance. CONCLUSIONS Activation of AhR attenuates experimental colitis by modulating the balance of TolDCs and Th17/Treg. The AhR modulation of TolDCs may be a viable therapeutic approach for CD.
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Affiliation(s)
- Shu Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, People's Republic of China
| | - Ying Xu
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, People's Republic of China
| | - Lu Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, People's Republic of China
| | - Junjie Lin
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, People's Republic of China
| | - Chenjing Xu
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, People's Republic of China
| | - Xiaojing Zhao
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, People's Republic of China
| | - Hongjie Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, People's Republic of China
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6
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Byndloss M, Devkota S, Duca F, Niess JH, Nieuwdorp M, Orho-Melander M, Sanz Y, Tremaroli V, Zhao L. The gut microbiota and diabetes: research, translation, and clinical applications - 2023 Diabetes, Diabetes Care, and Diabetologia Expert Forum. Diabetologia 2024; 67:1760-1782. [PMID: 38910152 PMCID: PMC11410996 DOI: 10.1007/s00125-024-06198-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Accepted: 05/23/2024] [Indexed: 06/25/2024]
Abstract
This article summarises the state of the science on the role of the gut microbiota (GM) in diabetes from a recent international expert forum organised by Diabetes, Diabetes Care, and Diabetologia, which was held at the European Association for the Study of Diabetes 2023 Annual Meeting in Hamburg, Germany. Forum participants included clinicians and basic scientists who are leading investigators in the field of the intestinal microbiome and metabolism. Their conclusions were as follows: (1) the GM may be involved in the pathophysiology of type 2 diabetes, as microbially produced metabolites associate both positively and negatively with the disease, and mechanistic links of GM functions (e.g. genes for butyrate production) with glucose metabolism have recently emerged through the use of Mendelian randomisation in humans; (2) the highly individualised nature of the GM poses a major research obstacle, and large cohorts and a deep-sequencing metagenomic approach are required for robust assessments of associations and causation; (3) because single time point sampling misses intraindividual GM dynamics, future studies with repeated measures within individuals are needed; and (4) much future research will be required to determine the applicability of this expanding knowledge to diabetes diagnosis and treatment, and novel technologies and improved computational tools will be important to achieve this goal.
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Affiliation(s)
- Mariana Byndloss
- Vanderbilt University Medical Center, Nashville, TN, USA
- Howard Hughes Medical Institute, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Suzanne Devkota
- Cedars-Sinai Medical Center, Human Microbiome Research Institute, Los Angeles, CA, USA
| | | | - Jan Hendrik Niess
- Department of Biomedicine, University of Basel, Basel, Switzerland
- Department of Gastroenterology and Hepatology, University Digestive Healthcare Center, Clarunis, Basel, Switzerland
| | - Max Nieuwdorp
- Department of Internal and Vascular Medicine, Amsterdam University Medical Centers, Amsterdam, the Netherlands
- Amsterdam Diabeter Center, Amsterdam University Medical Centers, Amsterdam, the Netherlands
| | - Marju Orho-Melander
- Department of Clinical Sciences in Malmö, Lund University Diabetes Centre, Lund University, Malmö, Sweden
| | - Yolanda Sanz
- Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain.
| | - Valentina Tremaroli
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Liping Zhao
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, USA
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7
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Bahman F, Choudhry K, Al-Rashed F, Al-Mulla F, Sindhu S, Ahmad R. Aryl hydrocarbon receptor: current perspectives on key signaling partners and immunoregulatory role in inflammatory diseases. Front Immunol 2024; 15:1421346. [PMID: 39211042 PMCID: PMC11358079 DOI: 10.3389/fimmu.2024.1421346] [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: 04/29/2024] [Accepted: 07/26/2024] [Indexed: 09/04/2024] Open
Abstract
The aryl hydrocarbon receptor (AhR) is a versatile environmental sensor and transcription factor found throughout the body, responding to a wide range of small molecules originating from the environment, our diets, host microbiomes, and internal metabolic processes. Increasing evidence highlights AhR's role as a critical regulator of numerous biological functions, such as cellular differentiation, immune response, metabolism, and even tumor formation. Typically located in the cytoplasm, AhR moves to the nucleus upon activation by an agonist where it partners with either the aryl hydrocarbon receptor nuclear translocator (ARNT) or hypoxia-inducible factor 1β (HIF-1β). This complex then interacts with xenobiotic response elements (XREs) to control the expression of key genes. AhR is notably present in various crucial immune cells, and recent research underscores its significant impact on both innate and adaptive immunity. This review delves into the latest insights on AhR's structure, activating ligands, and its multifaceted roles. We explore the sophisticated molecular pathways through which AhR influences immune and lymphoid cells, emphasizing its emerging importance in managing inflammatory diseases. Furthermore, we discuss the exciting potential of developing targeted therapies that modulate AhR activity, opening new avenues for medical intervention in immune-related conditions.
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Affiliation(s)
- Fatemah Bahman
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman, Kuwait
| | - Khubaib Choudhry
- Department of Human Biology, University of Toronto, Toronto, ON, Canada
| | - Fatema Al-Rashed
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman, Kuwait
| | - Fahd Al-Mulla
- Department of Translational Research, Dasman Diabetes Institute, Dasman, Kuwait
| | - Sardar Sindhu
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman, Kuwait
- Animal & Imaging Core Facilities, Dasman Diabetes Institute, Dasman, Kuwait
| | - Rasheed Ahmad
- Department of Immunology & Microbiology, Dasman Diabetes Institute, Dasman, Kuwait
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8
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Medina-Rodríguez EM, Martínez-Raga J, Sanz Y. Intestinal Barrier, Immunity and Microbiome: Partners in the Depression Crime. Pharmacol Rev 2024; 76:956-969. [PMID: 39084934 DOI: 10.1124/pharmrev.124.001202] [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: 01/30/2024] [Revised: 05/28/2024] [Accepted: 05/29/2024] [Indexed: 08/02/2024] Open
Abstract
Depression is a highly prevalent disorder and a leading cause of disability worldwide. It has a major impact on the affected individual and on society as a whole. Regrettably, current available treatments for this condition are insufficient in many patients. In recent years, the gut microbiome has emerged as a promising alternative target for treating and preventing depressive disorders. However, the microbes that form this ecosystem do not act alone but are part of a complicated network connecting the gut and the brain that influences our mood. Host cells that are in intimate contact with gut microbes, such as the epithelial cells forming the gut barrier and the immune cells in their vicinity, play a key role in the process. These cells continuously shape immune responses to maintain healthy communication between gut microbes and the host. In this article, we review how the interplay among epithelial cells, the immune system, and gut microbes mediates gut-brain communication to influence mood. We also discuss how advances in our knowledge of the mechanisms underlying the gut-brain axis could contribute to addressing depression. SIGNIFICANCE STATEMENT: This review does not aim to systematically describe intestinal microbes that might be beneficial or detrimental for depression. We have adopted a novel point of view by focusing on potential mechanisms underlying the crosstalk between gut microbes and their intestinal environment to control mood. These pathways could be targeted by well defined and individually tailored dietary interventions, microbes, or microbial metabolites to ameliorate depression and decrease its important social and economic impact.
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Affiliation(s)
- Eva M Medina-Rodríguez
- Psychiatry Service, Doctor Peset University Hospital, FISABIO, Valencia, Spain (E.M.M.-R., J.M.-R.); Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain (E.M.M.-R., Y.S.); and University of Valencia, Valencia, Spain (J.M.-R.)
| | - José Martínez-Raga
- Psychiatry Service, Doctor Peset University Hospital, FISABIO, Valencia, Spain (E.M.M.-R., J.M.-R.); Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain (E.M.M.-R., Y.S.); and University of Valencia, Valencia, Spain (J.M.-R.)
| | - Yolanda Sanz
- Psychiatry Service, Doctor Peset University Hospital, FISABIO, Valencia, Spain (E.M.M.-R., J.M.-R.); Institute of Agrochemistry and Food Technology, Spanish National Research Council (IATA-CSIC), Valencia, Spain (E.M.M.-R., Y.S.); and University of Valencia, Valencia, Spain (J.M.-R.)
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9
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Montgomery TL, Peipert D, Krementsov DN. Modulation of multiple sclerosis risk and pathogenesis by the gut microbiota: Complex interactions between host genetics, bacterial metabolism, and diet. Immunol Rev 2024; 325:131-151. [PMID: 38717158 PMCID: PMC11338732 DOI: 10.1111/imr.13343] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2024]
Abstract
Multiple sclerosis (MS) is an autoimmune disease of the central nervous system, affecting nearly 2 million people worldwide. The etiology of MS is multifactorial: Approximately 30% of the MS risk is genetic, which implies that the remaining ~70% is environmental, with a number of factors proposed. One recently implicated risk factor for MS is the composition of the gut microbiome. Numerous case-control studies have identified changes in gut microbiota composition of people with MS (pwMS) compared with healthy control individuals, and more recent studies in animal models have begun to identify the causative microbes and underlying mechanisms. Here, we review some of these mechanisms, with a specific focus on the role of host genetic variation, dietary inputs, and gut microbial metabolism, with a particular emphasis on short-chain fatty acid and tryptophan metabolism. We put forward a model where, in an individual genetically susceptible to MS, the gut microbiota and diet can synergize as potent environmental modifiers of disease risk and possibly progression, with diet-dependent gut microbial metabolites serving as a key mechanism. We also propose that specific microbial taxa may have divergent effects in individuals carrying distinct variants of MS risk alleles or other polymorphisms, as a consequence of host gene-by-gut microbiota interactions. Finally, we also propose that the effects of specific microbial taxa, especially those that exert their effects through metabolites, are highly dependent on the host dietary intake. What emerges is a complex multifaceted interaction that has been challenging to disentangle in human studies, contributing to the divergence of findings across heterogeneous cohorts with differing geography, dietary preferences, and genetics. Nonetheless, this provides a complex and individualized, yet tractable, model of how the gut microbiota regulate susceptibility to MS, and potentially progression of this disease. Thus, we conclude that prophylactic or therapeutic modulation of the gut microbiome to prevent or treat MS will require a careful and personalized consideration of host genetics, baseline gut microbiota composition, and dietary inputs.
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Affiliation(s)
- Theresa L. Montgomery
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05405, USA
| | - Dan Peipert
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05405, USA
| | - Dimitry N. Krementsov
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05405, USA
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10
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Sardar P, Almeida A, Pedicord VA. Integrating functional metagenomics to decipher microbiome-immune interactions. Immunol Cell Biol 2024. [PMID: 38952337 DOI: 10.1111/imcb.12798] [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: 04/05/2024] [Revised: 06/04/2024] [Accepted: 06/13/2024] [Indexed: 07/03/2024]
Abstract
Microbial metabolites can be viewed as the cytokines of the microbiome, transmitting information about the microbial and metabolic environment of the gut to orchestrate and modulate local and systemic immune responses. Still, many immunology studies focus solely on the taxonomy and community structure of the gut microbiota rather than its functions. Early sequencing-based microbiota profiling approaches relied on PCR amplification of small regions of bacterial and fungal genomes to facilitate identification of the microbes present. However, recent microbiome analysis methods, particularly shotgun metagenomic sequencing, now enable culture-independent profiling of microbiome functions and metabolites in addition to taxonomic characterization. In this review, we showcase recent advances in functional metagenomics methods and applications and discuss the current limitations and potential avenues for future development. Importantly, we highlight a few examples of key areas of opportunity in immunology research where integrating functional metagenomic analyses of the microbiome can substantially enhance a mechanistic understanding of microbiome-immune interactions and their contributions to health and disease states.
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Affiliation(s)
- Puspendu Sardar
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, Cambridge, UK
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, UK
| | - Alexandre Almeida
- Department of Veterinary Medicine, University of Cambridge School of Biological Sciences, Cambridge, UK
| | - Virginia A Pedicord
- Cambridge Institute of Therapeutic Immunology and Infectious Disease, Jeffrey Cheah Biomedical Centre, Cambridge, UK
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, UK
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11
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Graelmann FJ, Gondorf F, Majlesain Y, Niemann B, Klepac K, Gosejacob D, Gottschalk M, Mayer M, Iriady I, Hatzfeld P, Lindenberg SK, Wunderling K, Thiele C, Abdullah Z, He W, Hiller K, Händler K, Beyer MD, Ulas T, Pfeifer A, Esser C, Weighardt H, Förster I, Reverte-Salisa L. Differential cell type-specific function of the aryl hydrocarbon receptor and its repressor in diet-induced obesity and fibrosis. Mol Metab 2024; 85:101963. [PMID: 38821174 PMCID: PMC11214421 DOI: 10.1016/j.molmet.2024.101963] [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: 03/06/2024] [Revised: 05/02/2024] [Accepted: 05/25/2024] [Indexed: 06/02/2024] Open
Abstract
OBJECTIVE The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor regulating xenobiotic responses as well as physiological metabolism. Dietary AhR ligands activate the AhR signaling axis, whereas AhR activation is negatively regulated by the AhR repressor (AhRR). While AhR-deficient mice are known to be resistant to diet-induced obesity (DIO), the influence of the AhRR on DIO has not been assessed so far. METHODS In this study, we analyzed AhRR-/- mice and mice with a conditional deletion of either AhRR or AhR in myeloid cells under conditions of DIO and after supplementation of dietary AhR ligands. Moreover, macrophage metabolism was assessed using Seahorse Mito Stress Test and ROS assays as well as transcriptomic analysis. RESULTS We demonstrate that global AhRR deficiency leads to a robust, but not as profound protection from DIO and hepatosteatosis as AhR deficiency. Under conditions of DIO, AhRR-/- mice did not accumulate TCA cycle intermediates in the circulation in contrast to wild-type (WT) mice, indicating protection from metabolic dysfunction. This effect could be mimicked by dietary supplementation of AhR ligands in WT mice. Because of the predominant expression of the AhRR in myeloid cells, AhRR-deficient macrophages were analyzed for changes in metabolism and showed major metabolic alterations regarding oxidative phosphorylation and mitochondrial activity. Unbiased transcriptomic analysis revealed increased expression of genes involved in de novo lipogenesis and mitochondrial biogenesis. Mice with a genetic deficiency of the AhRR in myeloid cells did not show alterations in weight gain after high fat diet (HFD) but demonstrated ameliorated liver damage compared to control mice. Further, deficiency of the AhR in myeloid cells also did not affect weight gain but led to enhanced liver damage and adipose tissue fibrosis compared to controls. CONCLUSIONS AhRR-deficient mice are resistant to diet-induced metabolic syndrome. Although conditional ablation of either the AhR or AhRR in myeloid cells did not recapitulate the phenotype of the global knockout, our findings suggest that enhanced AhR signaling in myeloid cells deficient for AhRR protects from diet-induced liver damage and fibrosis, whereas myeloid cell-specific AhR deficiency is detrimental.
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Affiliation(s)
- Frederike J Graelmann
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Fabian Gondorf
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Yasmin Majlesain
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Birte Niemann
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, Germany
| | - Katarina Klepac
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, Germany
| | - Dominic Gosejacob
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, Germany
| | - Marlene Gottschalk
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Michelle Mayer
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Irina Iriady
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Philip Hatzfeld
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Sophie K Lindenberg
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Klaus Wunderling
- Biochemistry & Cell Biology of Lipids, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Christoph Thiele
- Biochemistry & Cell Biology of Lipids, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Zeinab Abdullah
- Institute of Molecular Medicine and Experimental Immunology, University Hospital Bonn, University of Bonn, Germany
| | - Wei He
- Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Karsten Hiller
- Braunschweig Integrated Centre of Systems Biology (BRICS), Technische Universität Braunschweig, Braunschweig, Germany
| | - Kristian Händler
- PRECISE Platform for Single cell Genomics and Epigenomics at the German Center for Neurodegenerative Diseases and the University of Bonn and West German Genome Center, Bonn, Germany; Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany; Institute of Human Genetics, Universitätsklinikum Schleswig-Holstein, University of Lübeck and University of Kiel, 23562 Lübeck, Germany
| | - Marc D Beyer
- PRECISE Platform for Single cell Genomics and Epigenomics at the German Center for Neurodegenerative Diseases and the University of Bonn and West German Genome Center, Bonn, Germany; Immunogenomics & Neurodegeneration, German Center for Neurodegenerative Diseases, Bonn, Germany
| | - Thomas Ulas
- PRECISE Platform for Single cell Genomics and Epigenomics at the German Center for Neurodegenerative Diseases and the University of Bonn and West German Genome Center, Bonn, Germany; Genomics and Immunoregulation, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany
| | - Alexander Pfeifer
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, Germany
| | - Charlotte Esser
- IUF-Leibniz Research Institute for Environmental Medicine gGmbH, Düsseldorf, Germany
| | - Heike Weighardt
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany; IUF-Leibniz Research Institute for Environmental Medicine gGmbH, Düsseldorf, Germany
| | - Irmgard Förster
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany.
| | - Laia Reverte-Salisa
- Immunology and Environment, Life and Medical Sciences (LIMES) Institute, University of Bonn, Germany.
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12
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Huang Z, Wells JM, Fogliano V, Capuano E. Microbial tryptophan catabolism as an actionable target via diet-microbiome interactions. Crit Rev Food Sci Nutr 2024:1-15. [PMID: 38950607 DOI: 10.1080/10408398.2024.2369947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
In recent years, the role of microbial tryptophan (Trp) catabolism in host-microbiota crosstalk has become a major area of scientific interest. Microbiota-derived Trp catabolites positively contribute to intestinal and systemic homeostasis by acting as ligands of aryl hydrocarbon receptor and pregnane X receptor, and as signaling molecules in microbial communities. Accumulating evidence suggests that microbial Trp catabolism could be therapeutic targets in treating human diseases. A number of bacteria and metabolic pathways have been identified to be responsible for the conversion of Trp in the intestine. Interestingly, many Trp-degrading bacteria can benefit from the supplementation of specific dietary fibers and polyphenols, which in turn increase the microbial production of beneficial Trp catabolites. Thus, this review aims to highlight the emerging role of diets and food components, i.e., food matrix, fiber, and polyphenol, in modulating the microbial catabolism of Trp and discuss the opportunities for potential therapeutic interventions via specifically designed diets targeting the Trp-microbiome axis.
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Affiliation(s)
- Zhan Huang
- Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University, Wageningen, the Netherlands
- Host-Microbe Interactomics Group, Department of Animal Sciences, Wageningen University, Wageningen, the Netherlands
| | - Jerry M Wells
- Host-Microbe Interactomics Group, Department of Animal Sciences, Wageningen University, Wageningen, the Netherlands
| | - Vincenzo Fogliano
- Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University, Wageningen, the Netherlands
| | - Edoardo Capuano
- Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University, Wageningen, the Netherlands
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13
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Chang N, Wei Wei, Wang S, Hou S, Sui Y, Taoyang, He J, Ren Y, Chen G, Bu C. The metabolomics analysis of cecal contents elucidates significant metabolites involved in the therapeutic effects of total flavonoids derived from Sonchus arvensis L. in male C57BL/6 mice with ulcerative colitis. Heliyon 2024; 10:e32790. [PMID: 39005925 PMCID: PMC11239596 DOI: 10.1016/j.heliyon.2024.e32790] [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: 01/01/2024] [Revised: 06/09/2024] [Accepted: 06/10/2024] [Indexed: 07/16/2024] Open
Abstract
Ulcerative colitis (UC), an inflammatory disease affecting the colon and rectal mucosa, is characterized by chronic and heterogeneous behavior of unknown origin. The primary cause of UC is chronic inflammation, which is closely linked to the development of colorectal cancer. Sonchus arvensis L. (SAL), a plant consumed worldwide for its nutritional and medicinal properties, holds significance in this context. In this study, we employed the total flavone in SAL as a treatment for male C57BL/6 mice with UC. The cecal contents metabolic profile of C57BL/6 mice in different groups, including UC (group ML; n = 5), UC treated with aspirin (group AN; n = 5), UC treated with the total flavone in SAL (group FE; n = 5), and healthy male C57BL/6 mice (group CL; n = 5), was examined using UHPLC-Triple-TOF-MS. Through the identification of variations in key metabolites associated with UC and the exploration of their underlying biological mechanisms, our understanding of the pathological processes underlying this condition has been enhanced. This study identified a total of seventy-three metabolites that have a significant impact on UC. Notably, the composition of total flavone in SAL, a medication used for UC treatment, differs from that of aspirin due to the presence of four distinct metabolites (13,14-Dihydro-15-keto-PGE2, Prostaglandin I2 (PGI2), (20R,22R)-20,22-dihydroxycholesterol, and PS (18:1(9Z)/0:0)). These metabolites possess unique characteristics that set them apart. Moreover, the study identified a total of eleven pathways that were significantly enriched in mice with UC, including Aminoacyl-tRNA biosynthesis, Valine, leucine and isoleucine biosynthesis, Linoleic acid metabolism, PPAR signaling pathway, mTOR signaling pathway, Valine, leucine and isoleucine degradation, Lysine degradation, VEGF signaling pathway, Melanogenesis, Endocrine and other factor-regulated calcium reabsorption, and Cocaine addiction. These findings contribute to a better understanding of the metabolic variations in UC following total flavonoids of SAL therapy and provide valuable insights for the treatment of UC.Keywords: Ulcerative colitis; Total flavonoids of Sonchus arvensis L.; Key metabolites; Metabonomics; Cecal contents of male C57BL/6 mice.
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Affiliation(s)
| | - Wei Wei
- Daqing Oilfield Genaral Hospital, Daqing, 163319, China
| | | | | | - Yilei Sui
- Harbin Medical University 163319, China
| | - Taoyang
- Harbin Medical University 163319, China
| | - Jing He
- Harbin Medical University 163319, China
| | - Yachao Ren
- Harbin Medical University 163319, China
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300000, China
| | | | - Chunlei Bu
- Harbin Medical University 163319, China
- Fifth Affiliated Hospital, Harbin Medical University, Daqing, 163319, China
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14
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Christopher MW, Klug AC, Lee JH, Ericson AC, Feizbakhsh Bazargani S, Dinglasan RR, Prentice BM, Garrett TJ. Indole-3-pyruvate: Analysis and Control of Tautomerism and Reactivity. Anal Chem 2024; 96:10399-10407. [PMID: 38858849 DOI: 10.1021/acs.analchem.4c01584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
It is well-known in biochemistry that structure confers function, meaning that chemical structural elucidation is critical to truly understanding the function of a given metabolite. Indole-3-pyruvate (IPyA) exists in an equilibrium between the keto and enol tautomeric forms. IPyA is suggested to play a role in immune function; however, determining whether the tautomeric forms function differently can only be studied if an analytical method is capable of distinguishing between the two forms. Herein, we describe the use of UHPLC-HRMS to gain insight into the physical variables that govern IPyA tautomer equilibrium, reactivity, and detection limit. We use hydrogen-deuterium exchange (HDX) to identify enol and keto peaks, and we show that tautomers exhibit a valley of fronting followed by a tailing peak shape (though separation is still attainable) and identical MS/MS spectra. We observed drastically different ratios of keto and enol forms in different solvents, which is an important consideration for in vitro studies. IPyA was found to be highly unstable with accelerated reactivity in peroxides. Through in vitro reactivity studies, IPyA produced a myriad of known and unknown metabolites via nonenzymatic processes, many of which were mapped in vivo via the analysis of human plasma. Finally, we show that vitamin C (ascorbic acid) can slow this reactivity and enable sensitive detection in whole blood.
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Affiliation(s)
- Michael W Christopher
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Alexander C Klug
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Jae Hwan Lee
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Aiden C Ericson
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | | | - Rhoel R Dinglasan
- Department of Infectious Disease and Immunology, University of Florida, College of Veterinary Medicine, Gainesville, Florida 32608, United States
| | - Boone M Prentice
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Timothy J Garrett
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, College of Medicine, Gainesville, Florida 32608, United States
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15
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Quan S, Huang J, Chen G, Zhang A, Yang Y, Wu Z. Genistein Promotes M2 Macrophage Polarization via Aryl Hydrocarbon Receptor and Alleviates Intestinal Inflammation in Broilers with Necrotic Enteritis. Int J Mol Sci 2024; 25:6656. [PMID: 38928362 PMCID: PMC11203855 DOI: 10.3390/ijms25126656] [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: 05/16/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
The aryl hydrocarbon receptor (AhR) is a transcription factor that regulates the immune system through complicated transcriptional programs. Genistein, an AhR ligand, exhibits anti-inflammatory properties. However, its role in modulating immune responses via the AhR signaling pathway remains unclear. In this study, 360 male Arbor Acre broilers (1-day-old) were fed a basal diet supplemented with 40 or 80 mg/kg genistein and infected with or without Clostridium perfringens (Cp). Our results demonstrated that genistein ameliorated Cp-induced intestinal damage, as reflected by the reduced intestinal lesion scores and improved intestinal morphology and feed-to-gain ratio. Moreover, genistein increased intestinal sIgA, TGF-β, and IL-10, along with elevated serum IgG, IgA, and lysozyme levels. Genistein improved intestinal AhR and cytochrome P450 family 1 subfamily A member 1 (CYP1A1) protein levels and AhR+ cell numbers in Cp-challenged broilers. The increased number of AhR+CD163+ cells in the jejunum suggested a potential association between genistein-induced AhR activation and anti-inflammatory effects mediated through M2 macrophage polarization. In IL-4-treated RAW264.7 cells, genistein increased the levels of AhR, CYP1A1, CD163, and arginase (Arg)-1 proteins, as well as IL-10 mRNA levels. This increase was attenuated by the AhR antagonist CH223191. In summary, genistein activated the AhR signaling pathway in M2 macrophages, which enhanced the secretion of anti-inflammatory cytokines and attenuated intestinal damage in Cp-infected broilers Cp.
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Affiliation(s)
| | | | | | | | - Ying Yang
- College of Animal Science & Technology, China Agricultural University, Beijing 100193, China; (S.Q.); (J.H.); (G.C.); (A.Z.); (Z.W.)
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16
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Galipeau HJ, Hinterleitner R, Leonard MM, Caminero A. Non-Host Factors Influencing Onset and Severity of Celiac Disease. Gastroenterology 2024; 167:34-50. [PMID: 38286392 DOI: 10.1053/j.gastro.2024.01.030] [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: 11/10/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 01/31/2024]
Abstract
Celiac disease (CeD) is a chronic autoimmune condition driven by gluten ingestion in genetically predisposed individuals, resulting in inflammatory lesions in the proximal small intestine. Although the presence of specific HLA-linked haplotypes and gluten consumption are necessary for disease development, they alone do not account for the variable onset of CeD in susceptible individuals. This review explores the multifaceted role of non-host factors in CeD development, including dietary and microbial influences. We discuss clinical associations and observations highlighting the impact of these factors on disease onset and severity. Furthermore, we discuss studies in CeD-relevant animal models that offer mechanistic insights into how diet, the microbiome, and enteric infections modulate CeD pathogenesis. Finally, we address the clinical implications and therapeutic potential of understanding these cofactors offering a promising avenue for preventive and therapeutic interventions in CeD management.
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Affiliation(s)
- Heather J Galipeau
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario, Canada.
| | - Reinhard Hinterleitner
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Maureen M Leonard
- Division of Pediatric Gastroenterology and Nutrition, Department of Pediatrics, MassGeneral Hospital for Children, Harvard Medical School, Boston, Massachusetts; Center for Celiac Research and Treatment, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Alberto Caminero
- Farncombe Family Digestive Health Research Institute, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
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17
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Li Z, Xiong W, Liang Z, Wang J, Zeng Z, Kołat D, Li X, Zhou D, Xu X, Zhao L. Critical role of the gut microbiota in immune responses and cancer immunotherapy. J Hematol Oncol 2024; 17:33. [PMID: 38745196 PMCID: PMC11094969 DOI: 10.1186/s13045-024-01541-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 04/03/2024] [Indexed: 05/16/2024] Open
Abstract
The gut microbiota plays a critical role in the progression of human diseases, especially cancer. In recent decades, there has been accumulating evidence of the connections between the gut microbiota and cancer immunotherapy. Therefore, understanding the functional role of the gut microbiota in regulating immune responses to cancer immunotherapy is crucial for developing precision medicine. In this review, we extract insights from state-of-the-art research to decipher the complicated crosstalk among the gut microbiota, the systemic immune system, and immunotherapy in the context of cancer. Additionally, as the gut microbiota can account for immune-related adverse events, we discuss potential interventions to minimize these adverse effects and discuss the clinical application of five microbiota-targeted strategies that precisely increase the efficacy of cancer immunotherapy. Finally, as the gut microbiota holds promising potential as a target for precision cancer immunotherapeutics, we summarize current challenges and provide a general outlook on future directions in this field.
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Affiliation(s)
- Zehua Li
- Department of Plastic and Burn Surgery, West China Hospital, Sichuan University, Chengdu, China
- Chinese Academy of Medical Sciences (CAMS), CAMS Oxford Institute (COI), Nuffield Department of Medicine, University of Oxford, Oxford, England
| | - Weixi Xiong
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
- Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China
| | - Zhu Liang
- Chinese Academy of Medical Sciences (CAMS), CAMS Oxford Institute (COI), Nuffield Department of Medicine, University of Oxford, Oxford, England
- Target Discovery Institute, Center for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, England
| | - Jinyu Wang
- Departments of Obstetrics and Gynecology, West China Second University Hospital of Sichuan University, Chengdu, China
| | - Ziyi Zeng
- Department of Neonatology, West China Second University Hospital of Sichuan University, Chengdu, China
| | - Damian Kołat
- Department of Functional Genomics, Medical University of Lodz, Lodz, Poland
- Department of Biomedicine and Experimental Surgery, Medical University of Lodz, Lodz, Poland
| | - Xi Li
- Department of Urology, Churchill Hospital, Oxford University Hospitals NHS Foundation, Oxford, UK
| | - Dong Zhou
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
- Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China
| | - Xuewen Xu
- Department of Plastic and Burn Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Linyong Zhao
- Department of General Surgery and Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, China.
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18
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Congues F, Wang P, Lee J, Lin D, Shahid A, Xie J, Huang Y. Targeting aryl hydrocarbon receptor to prevent cancer in barrier organs. Biochem Pharmacol 2024; 223:116156. [PMID: 38518996 PMCID: PMC11144369 DOI: 10.1016/j.bcp.2024.116156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 03/08/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
The skin, lung, and gut are important barrier organs that control how the body reacts to environmental stressors such as ultraviolet (UV) radiation, air pollutants, dietary components, and microorganisms. The aryl hydrocarbon receptor (AhR) is a ligand-dependent transcription factor that plays an important role in maintaining homeostasis of barrier organs. AhR was initially discovered as a receptor for environmental chemical carcinogens such as polycyclic aromatic hydrocarbons (PAHs). Activation of AhR pathways by PAHs leads to increased DNA damage and mutations which ultimately lead to carcinogenesis. Ongoing evidence reveals an ever-expanding role of AhR. Recently, AhR has been linked to immune systems by the interaction with the development of natural killer (NK) cells, regulatory T (Treg) cells, and T helper 17 (Th17) cells, as well as the production of immunosuppressive cytokines. However, the role of AhR in carcinogenesis is not as straightforward as we initially thought. Although AhR activation has been shown to promote carcinogenesis in some studies, others suggest that it may act as a tumor suppressor. In this review, we aim to explore the role of AhR in the development of cancer that originates from barrier organs. We also examined the preclinical efficacy data of AhR agonists and antagonists on carcinogenesis to determine whether AhR modulation can be a viable option for cancer chemoprevention.
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Affiliation(s)
- Francoise Congues
- Department of Biotechnology and Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Pengcheng Wang
- Department of Biotechnology and Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, Pomona, CA 91766, USA; Department of Stomatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Joshua Lee
- Department of Biotechnology and Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Daphne Lin
- Department of Biotechnology and Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Ayaz Shahid
- Department of Biotechnology and Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Jianming Xie
- Department of Biotechnology and Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Ying Huang
- Department of Biotechnology and Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, Pomona, CA 91766, USA.
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19
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Marafini I, Monteleone I, Laudisi F, Monteleone G. Aryl Hydrocarbon Receptor Signalling in the Control of Gut Inflammation. Int J Mol Sci 2024; 25:4527. [PMID: 38674118 PMCID: PMC11050475 DOI: 10.3390/ijms25084527] [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: 03/25/2024] [Revised: 04/11/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Aryl hydrocarbon receptor (AHR), a transcription factor activated by many natural and synthetic ligands, represents an important mediator of the interplay between the environment and the host's immune responses. In a healthy gut, AHR activation promotes tolerogenic signals, which help maintain mucosal homeostasis. AHR expression is defective in the inflamed gut of patients with inflammatory bowel diseases (IBD), where decreased AHR signaling is supposed to contribute to amplifying the gut tissue's destructive immune-inflammatory responses. We here review the evidence supporting the role of AHR in controlling the "physiological" intestinal inflammation and summarize the data about the therapeutic effects of AHR activators, both in preclinical mouse models of colitis and in patients with IBD.
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Affiliation(s)
- Irene Marafini
- Gastroenterology Unit, Policlinico Universitario Tor Vergata, 00133 Rome, Italy;
| | - Ivan Monteleone
- Department of Biomedicine and Prevention, University of “Tor Vergata”, 00133 Rome, Italy;
| | - Federica Laudisi
- Department of Systems Medicine, University of “Tor Vergata”, 00133 Rome, Italy;
| | - Giovanni Monteleone
- Gastroenterology Unit, Policlinico Universitario Tor Vergata, 00133 Rome, Italy;
- Department of Systems Medicine, University of “Tor Vergata”, 00133 Rome, Italy;
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20
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Veland N, Gleneadie HJ, Brown KE, Sardini A, Pombo J, Dimond A, Burns V, Sarkisyan K, Schiering C, Webster Z, Merkenschlager M, Fisher AG. Bioluminescence imaging of Cyp1a1-luciferase reporter mice demonstrates prolonged activation of the aryl hydrocarbon receptor in the lung. Commun Biol 2024; 7:442. [PMID: 38600349 PMCID: PMC11006662 DOI: 10.1038/s42003-024-06089-6] [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: 05/30/2023] [Accepted: 03/21/2024] [Indexed: 04/12/2024] Open
Abstract
Aryl hydrocarbon receptor (AHR) signalling integrates biological processes that sense and respond to environmental, dietary, and metabolic challenges to ensure tissue homeostasis. AHR is a transcription factor that is inactive in the cytosol but upon encounter with ligand translocates to the nucleus and drives the expression of AHR targets, including genes of the cytochrome P4501 family of enzymes such as Cyp1a1. To dynamically visualise AHR activity in vivo, we generated reporter mice in which firefly luciferase (Fluc) was non-disruptively targeted into the endogenous Cyp1a1 locus. Exposure of these animals to FICZ, 3-MC or to dietary I3C induced strong bioluminescence signal and Cyp1a1 expression in many organs including liver, lung and intestine. Longitudinal studies revealed that AHR activity was surprisingly long-lived in the lung, with sustained Cyp1a1 expression evident in discrete populations of cells including columnar epithelia around bronchioles. Our data link diet to lung physiology and also reveal the power of bespoke Cyp1a1-Fluc reporters to longitudinally monitor AHR activity in vivo.
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Affiliation(s)
- Nicolas Veland
- Epigenetic Memory Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 OHS, UK
| | - Hannah J Gleneadie
- Epigenetic Memory Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 OHS, UK
| | - Karen E Brown
- Epigenetic Memory Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 OHS, UK
| | - Alessandro Sardini
- Whole Animal Physiology and Imaging, MRC Laboratory of Medical Sciences, Imperial College London, Hammersmith Hospital Campus, Du Cane Road, London, W12 0HS, UK
| | - Joaquim Pombo
- Senescence Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 0HS, UK
| | - Andrew Dimond
- Epigenetic Memory Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 OHS, UK
- Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, UK
| | - Vanessa Burns
- Epigenetic Memory Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 OHS, UK
| | - Karen Sarkisyan
- Synthetic Biology Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 0HS, UK
| | - Chris Schiering
- Inflammation and Obesity Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 0HS, UK
| | - Zoe Webster
- Transgenics & Embryonic Stem Cell Facility, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 0HS, UK
| | - Matthias Merkenschlager
- Lymphocyte Development Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 0HS, UK
| | - Amanda G Fisher
- Epigenetic Memory Group, MRC Laboratory of Medical Sciences, Imperial College London Hammersmith Hospital Campus, Du Cane Road, London, W12 OHS, UK.
- Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, UK.
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21
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Li C, Lanasa D, Park JH. Pathways and mechanisms of CD4 +CD8αα + intraepithelial T cell development. Trends Immunol 2024; 45:288-302. [PMID: 38514370 PMCID: PMC11015970 DOI: 10.1016/j.it.2024.02.006] [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: 02/02/2024] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/23/2024]
Abstract
The mammalian small intestine epithelium harbors a peculiar population of CD4+CD8αα+ T cells that are derived from mature CD4+ T cells through reprogramming of lineage-specific transcription factors. CD4+CD8αα+ T cells occupy a unique niche in T cell biology because they exhibit mixed phenotypes and functional characteristics of both CD4+ helper and CD8+ cytotoxic T cells. The molecular pathways driving their generation are not fully mapped. However, recent studies demonstrate the unique role of the commensal gut microbiota as well as distinct cytokine and chemokine requirements in the differentiation and survival of these cells. We review the established and newly identified factors involved in the generation of CD4+CD8αα+ intraepithelial lymphocytes (IELs) and place them in the context of the molecular machinery that drives their phenotypic and functional differentiation.
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Affiliation(s)
- Can Li
- Experimental Immunology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Dominic Lanasa
- Experimental Immunology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jung-Hyun Park
- Experimental Immunology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
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22
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Zhang H, Yang Z, Yuan W, Liu J, Luo X, Zhang Q, Li Y, Chen J, Zhou Y, Lv J, Zhou N, Ma J, Tang K, Huang B. Sustained AhR activity programs memory fate of early effector CD8 + T cells. Proc Natl Acad Sci U S A 2024; 121:e2317658121. [PMID: 38437537 PMCID: PMC10945852 DOI: 10.1073/pnas.2317658121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 02/12/2024] [Indexed: 03/06/2024] Open
Abstract
Identification of mechanisms that program early effector T cells to either terminal effector T (Teff) or memory T (Tm) cells has important implications for protective immunity against infections and cancers. Here, we show that the cytosolic transcription factor aryl hydrocarbon receptor (AhR) is used by early Teff cells to program memory fate. Upon antigen engagement, AhR is rapidly up-regulated via reactive oxygen species signaling in early CD8+ Teff cells, which does not affect the effector response, but is required for memory formation. Mechanistically, activated CD8+ T cells up-regulate HIF-1α to compete with AhR for HIF-1β, leading to the loss of AhR activity in HIF-1αhigh short-lived effector cells, but sustained in HIF-1αlow memory precursor effector cells (MPECs) with the help of autocrine IL-2. AhR then licenses CD8+ MPECs in a quiescent state for memory formation. These findings partially resolve the long-standing issue of how Teff cells are regulated to differentiate into memory cells.
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Affiliation(s)
- Huafeng Zhang
- Department of Pathology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
| | - Zhuoshun Yang
- Institute of Biomedical Research, Department of Infectious Diseases, Regulatory Mechanism and Targeted Therapy for Liver Cancer Shiyan Key Laboratory, Hubei Provincial Clinical Research Center for Precise Diagnosis and Treatment of Liver Cancer, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei442000, China
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
| | - Wu Yuan
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
| | - Jincheng Liu
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
| | - Xiao Luo
- Department of Pathology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
| | - Qian Zhang
- Department of Pathology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
| | - Yonggang Li
- Hubei Provincial Key Laboratory for Applied Toxicology, Hubei Provincial Center for Disease Control and Prevention, Wuhan430079, China
| | - Jie Chen
- Department of Immunology and National Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100005, China
| | - Yabo Zhou
- Department of Immunology and National Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100005, China
| | - Jiadi Lv
- Department of Immunology and National Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100005, China
| | - Nannan Zhou
- Department of Immunology and National Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100005, China
| | - Jingwei Ma
- Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
| | - Ke Tang
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
| | - Bo Huang
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430030, China
- Department of Immunology and National Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100005, China
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23
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Targher G, Byrne CD, Tilg H. MASLD: a systemic metabolic disorder with cardiovascular and malignant complications. Gut 2024; 73:691-702. [PMID: 38228377 DOI: 10.1136/gutjnl-2023-330595] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 12/24/2023] [Indexed: 01/18/2024]
Abstract
Non-alcoholic fatty liver disease (NAFLD) has rapidly become the most common chronic liver disease globally and is currently estimated to affect up to 38% of the global adult population. NAFLD is a multisystem disease where systemic insulin resistance and related metabolic dysfunction play a pathogenic role in the development of NAFLD and its most relevant liver-related morbidities (cirrhosis, liver failure and hepatocellular carcinoma) and extrahepatic complications, such as cardiovascular disease (CVD), type 2 diabetes mellitus, chronic kidney disease, and certain types of extrahepatic cancers. In 2023, three large multinational liver associations proposed that metabolic dysfunction-associated steatotic liver disease (MASLD) should replace the term NAFLD; the name chosen to replace non-alcoholic steatohepatitis was metabolic dysfunction-associated steatohepatitis (MASH). Emerging epidemiological evidence suggests an excellent concordance rate between NAFLD and MASLD definitions-that is, ~99% of individuals with NAFLD meet MASLD criteria. In this narrative review, we provide an overview of the literature on (a) the recent epidemiological data on MASLD and the risk of developing CVD and malignant complications, (b) the underlying mechanisms by which MASLD (and factors strongly linked with MASLD) may increase the risk of these extrahepatic complications and (c) the diagnosis and assessment of CVD risk and potential treatments to reduce CVD risk in people with MASLD or MASH.
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Affiliation(s)
- Giovanni Targher
- Metabolic Diseases Research Unit, IRCCS Sacro Cuore Don Calabria Hospital and Department of Medicine University of Verona, Negrar di Valpolicella (VR), Italy
| | | | - Herbert Tilg
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology & Metabolism, Medizinische Universitat Innsbruck, Innsbruck, Austria
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24
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Saxena A, Mitchell C, Bogdon R, Roark K, Wilson K, Staley S, Hailey M, Williams MC, Rutkovsky A, Nagarkatti P, Nagarkatti M, Busbee PB. Aryl Hydrocarbon Receptor Regulates Muc2 Production Independently of IL-22 during Colitis. Int J Mol Sci 2024; 25:2404. [PMID: 38397081 PMCID: PMC10888603 DOI: 10.3390/ijms25042404] [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: 01/10/2024] [Revised: 02/09/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
We previously reported that an aryl hydrocarbon receptor (AhR) ligand, indole-3-carbinol (I3C), was effective at reducing colitis severity through immune cell-mediated interleukin-22 (IL-22) production. Intestinal epithelial cells (IECs) are also involved in regulating colitis, so we investigated their AhR-mediated mechanisms in the current report. A transcriptome analysis of IECs in wildtype (WT) mice revealed that during colitis, I3C regulated select mucin proteins, which could be attributed to goblet cell development. To address this, experiments under in vivo colitis (mice) or in vitro colon organoid conditions were undertaken to determine how select mucin proteins were altered in the absence or presence of AhR in IECs during I3C treatment. Comparing WT to IEC-specific AhR knockout mice (AhRΔIEC), the results showed that AhR expression was essential in IECs for I3C-mediated protection during colitis. AhR-deficiency also impaired mucin protein expression, particularly mucin 2 (Muc2), independently of IL-22. Collectively, this report highlights the important role of AhR in direct regulation of Muc2. These results provide justification for future studies aimed at determining how AhR might regulate select mucins through mechanisms such as direct transcription binding to enhance production.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Philip Brandon Busbee
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC 29209, USA; (A.S.); (C.M.); (R.B.); (K.R.); (K.W.); (S.S.); (M.H.); (A.R.); (P.N.); (M.N.)
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25
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Kwon SJ, Khan MS, Kim SG. Intestinal Inflammation and Regeneration-Interdigitating Processes Controlled by Dietary Lipids in Inflammatory Bowel Disease. Int J Mol Sci 2024; 25:1311. [PMID: 38279309 PMCID: PMC10816399 DOI: 10.3390/ijms25021311] [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: 12/12/2023] [Revised: 01/15/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024] Open
Abstract
Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, is a disease of chronic inflammatory conditions of the intestinal tract due to disturbance of the inflammation and immune system. Symptoms of IBD include abdominal pain, diarrhea, bleeding, reduced weight, and fatigue. In IBD, the immune system attacks the intestinal tract's inner wall, causing chronic inflammation and tissue damage. In particular, interlukin-6 and interlukin-17 act on immune cells, including T cells and macrophages, to amplify the immune responses so that tissue damage and morphological changes occur. Of note, excessive calorie intake and obesity also affect the immune system due to inflammation caused by lipotoxicity and changes in lipids supply. Similarly, individuals with IBD have alterations in liver function after sustained high-fat diet feeding. In addition, excess dietary fat intake, along with alterations in primary and secondary bile acids in the colon, can affect the onset and progression of IBD because inflammatory cytokines contribute to insulin resistance; the factors include the release of inflammatory cytokines, oxidative stress, and changes in intestinal microflora, which may also contribute to disease progression. However, interfering with de novo fatty acid synthase by deleting the enzyme acetyl-CoA-carboxylase 1 in intestinal epithelial cells (IEC) leads to the deficiency of epithelial crypt structures and tissue regeneration, which seems to be due to Lgr5+ intestinal stem cell function. Thus, conflicting reports exist regarding high-fat diet effects on IBD animal models. This review will focus on the pathological basis of the link between dietary lipids intake and IBD and will cover the currently available pharmacological approaches.
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Affiliation(s)
| | | | - Sang Geon Kim
- Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University-Seoul, Goyang-si 10326, Gyeonggi-do, Republic of Korea; (S.J.K.); (M.S.K.)
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26
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Maradana MR, Marzook NB, Diaz OE, Mkandawire T, Diny NL, Li Y, Liebert A, Shah K, Tolaini M, Kváč M, Stockinger B, Sateriale A. Dietary environmental factors shape the immune defense against Cryptosporidium infection. Cell Host Microbe 2023; 31:2038-2050.e4. [PMID: 38052207 DOI: 10.1016/j.chom.2023.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 09/05/2023] [Accepted: 11/09/2023] [Indexed: 12/07/2023]
Abstract
Cryptosporidium is a leading cause of diarrheal-related deaths in children, especially in resource-poor settings. It also targets the immunocompromised, chronically infecting people living with HIV and primary immunodeficiencies. There is no vaccine or effective treatment. Although it is known from human cases and animal models that CD4+ T cells play a role in curbing Cryptosporidium, the role of CD8+ T cells remains to be defined. Using a Cryptosporidium tyzzeri mouse model, we show that gut-resident CD8+ intraepithelial lymphocytes (IELs) confer resistance to parasite growth. CD8+ IELs express and depend on the ligand-dependent transcription factor aryl hydrocarbon receptor (AHR). AHR deficiency reduces CD8+ IELs, decreases their cytotoxicity, and worsens infection. Transfer of CD8+ IELs rescues severely immunodeficient mice from death following Cryptosporidium challenge. Finally, dietary supplementation of the AHR pro-ligand indole-3-carbinol in newborn mice promotes resistance to infection. Therefore, common dietary metabolites augment the host immune response to cryptosporidiosis, protecting against disease.
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Affiliation(s)
| | | | - Oscar E Diaz
- AhR Immunity Lab, The Francis Crick Institute, London, UK
| | | | | | - Ying Li
- AhR Immunity Lab, The Francis Crick Institute, London, UK
| | - Anke Liebert
- AhR Immunity Lab, The Francis Crick Institute, London, UK
| | - Kathleen Shah
- AhR Immunity Lab, The Francis Crick Institute, London, UK
| | - Mauro Tolaini
- AhR Immunity Lab, The Francis Crick Institute, London, UK
| | - Martin Kváč
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, České Budějovice, Czech Republic
| | | | - Adam Sateriale
- Cryptosporidiosis Lab, The Francis Crick Institute, London, UK.
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27
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Liu X, Liu M, Zhao M, Li P, Gao C, Fan X, Cai G, Lu Q, Chen X. Fecal microbiota transplantation for the management of autoimmune diseases: Potential mechanisms and challenges. J Autoimmun 2023; 141:103109. [PMID: 37690971 DOI: 10.1016/j.jaut.2023.103109] [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: 01/17/2023] [Revised: 08/17/2023] [Accepted: 08/28/2023] [Indexed: 09/12/2023]
Abstract
Autoimmune diseases (AIDs) are a series of immune-mediated lethal diseases featured by over-activated immune cells attacking healthy self-tissues and organs due to the loss of immune tolerance, which always causes severe irreversible systematical organ damage and threatens human health heavily. To date, there are still no definitive cures for the treatment of AIDs due to their pathogenesis has not been clearly understood. Besides, the current clinical treatments of AIDs majorly rely on glucocorticoids and immune suppressors, which can lead to serious side effects. In the past years, there are increasing studies demonstrating that an imbalance of gut microbiota is intimately related to the pathogenesis of various AIDs, shedding light on the development of therapeutics by targeting the gut microbiota for the management of AIDs. Among all the approaches targeting the gut microbiota, fecal microbiota transplantation (FMT) has attracted increasing interest, and it has been proposed as a possible strategy to intervene in the homeostasis of gut microbiota for the treatment of various diseases. However, despite the reported good curative effects and clinical studies conducted on FMT, the detailed mechanisms of FMT for the effective treatment of those diseases have not been figured out. To fully understand the mechanisms of the therapeutic effects of FMT on AIDs and improve the therapeutic efficacy of FMT treatment, a systematic review of this topic is necessary. Hence, in this review paper, the potential mechanisms of FMT for the treatment of various AIDs were summarized, including promotion, shaping, activation, or inhibition of the host immune system via the interactions between the microorganisms and the gut immune system, gut-brain, gut-liver, gut-kidney axis, and so on. Then, applications of FMT for the treatment of various AIDs were detailed presented. Finally, the current challenges and potential solutions for the development of FMT formulations and FMT therapeutics were comprehensively discussed.
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Affiliation(s)
- Xiaomin Liu
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing 100853, PR China
| | - Mei Liu
- Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Chinese Academy of Medical Sciences, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, 210042, PR China
| | - Ming Zhao
- Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Chinese Academy of Medical Sciences, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, 210042, PR China; Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, 421142, PR China
| | - Ping Li
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing 100853, PR China
| | - Changxing Gao
- Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Chinese Academy of Medical Sciences, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, 210042, PR China
| | - Xinyu Fan
- Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Chinese Academy of Medical Sciences, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, 210042, PR China
| | - Guangyan Cai
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing 100853, PR China.
| | - Qianjin Lu
- Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Chinese Academy of Medical Sciences, Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, 210042, PR China; Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital of Central South University, Changsha, 421142, PR China.
| | - Xiangmei Chen
- Department of Nephrology, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, National Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing 100853, PR China.
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28
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Eiberg H, Olsson JB, Bak M, Bang-Berthelsen CH, Troelsen JT, Hansen L. A family with ulcerative colitis maps to 7p21.1 and comprises a region with regulatory activity for the aryl hydrocarbon receptor gene. Eur J Hum Genet 2023; 31:1440-1446. [PMID: 36732664 PMCID: PMC10689720 DOI: 10.1038/s41431-023-01298-9] [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: 08/16/2022] [Revised: 11/16/2022] [Accepted: 01/18/2023] [Indexed: 02/04/2023] Open
Abstract
We have mapped a locus on chromosome 7p22.3-7p15.3 spanning a 22.4 Mb region for ulcerative colitis (UC) by whole genome linkage analyses of a large Danish family. The family represent three generations with UC segregating as an autosomal dominant trait with variable expressivity. The whole-genome scan resulted in a logarithm of odds score (LOD score) of Z = 3.31, and a whole genome sequencing (WGS) of two affected excluded disease-causing mutations in the protein coding genes. Two rare heterozygote variants, rs182281985:G>A and rs541426369:G>A, both with low allele frequencies (MAF A:0.0001, gnomAD ver3.1.2), were found in clusters of ChiP-seq transcription factors binding sites close to the AHR (aryl hydrocarbon receptor) gene and the UC associated SNP rs1077773:G>A. Testing the two SNPs in a promoter reporter assay for regulatory activity revealed that rs182281985:G>A influenced the AHR promoter. These results suggest a regulatory region that include rs182281985:G>A close to the UC GWAS SNP rs1077773:G>A and further demonstrate evidence that the AHR gene on the 7p-tel region is a candidate susceptible gene for UC.
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Affiliation(s)
- Hans Eiberg
- RCLINK, Department of Cellular and Molecular Medicine, Panum Institute, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen N, Denmark.
| | - Josephine B Olsson
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
- Department of Clinical Immunology, Zealand University Hospital, Naestved, Denmark
| | - Mads Bak
- Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Claus Heiner Bang-Berthelsen
- Research Group for Microbial Biotechnology and Biorefining, National Food Institute, Technical University of Denmark, Kemitorvet building 202, 2800 Kgs, Lyngby, Denmark
| | - Jesper T Troelsen
- Department of Science and Environment, Roskilde University, Roskilde, Denmark
| | - Lars Hansen
- Department of Cellular and Molecular Medicine, Panum Institute, University of Copenhagen, Blegdamsvej 3, DK-2200, Copenhagen N, Denmark
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29
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Van NT, Zhang K, Wigmore RM, Kennedy AI, DaSilva CR, Huang J, Ambelil M, Villagomez JH, O'Connor GJ, Longman RS, Cao M, Snook AE, Platten M, Kasenty G, Sigal LJ, Prendergast GC, Kim SV. Dietary L-Tryptophan consumption determines the number of colonic regulatory T cells and susceptibility to colitis via GPR15. Nat Commun 2023; 14:7363. [PMID: 37963876 PMCID: PMC10645889 DOI: 10.1038/s41467-023-43211-4] [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: 01/18/2023] [Accepted: 11/03/2023] [Indexed: 11/16/2023] Open
Abstract
Environmental factors are the major contributor to the onset of immunological disorders such as ulcerative colitis. However, their identities remain unclear. Here, we discover that the amount of consumed L-Tryptophan (L-Trp), a ubiquitous dietary component, determines the transcription level of the colonic T cell homing receptor, GPR15, hence affecting the number of colonic FOXP3+ regulatory T (Treg) cells and local immune homeostasis. Ingested L-Trp is converted by host IDO1/2 enzymes, but not by gut microbiota, to compounds that induce GPR15 transcription preferentially in Treg cells via the aryl hydrocarbon receptor. Consequently, two weeks of dietary L-Trp supplementation nearly double the colonic GPR15+ Treg cells via GPR15-mediated homing and substantially reduce the future risk of colitis. In addition, humans consume 3-4 times less L-Trp per kilogram of body weight and have fewer colonic GPR15+ Treg cells than mice. Thus, we uncover a microbiota-independent mechanism linking dietary L-Trp and colonic Treg cells, that may have therapeutic potential.
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Affiliation(s)
- Nguyen T Van
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
| | - Karen Zhang
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
| | - Rachel M Wigmore
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
| | - Anne I Kennedy
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
| | - Carolina R DaSilva
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
| | - Jialing Huang
- Department of Pathology, Anatomy, & Cell Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Anatomic Pathology, Geisinger Medical Center, Danville, PA, USA
| | - Manju Ambelil
- Department of Pathology, Anatomy, & Cell Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Jose H Villagomez
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
| | - Gerald J O'Connor
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
| | - Randy S Longman
- Jill Roberts Center for IBD, Weill Cornell Medicine, New York, NY, USA
| | - Miao Cao
- Department of Pharmacology, Physiology, & Cancer Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Adam E Snook
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
- Department of Pharmacology, Physiology, & Cancer Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Michael Platten
- CCU Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center, Heidelberg, Germany
- Department of Neurology, Medical Faculty Mannheim, MCTN, Heidelberg University, Heidelberg, Germany
- DKFZ Hector Cancer Institute at the University Medical Center Mannheim, Mannheim, Germany
| | - Gerard Kasenty
- Department of Genetics and Development, Irving Medical Center, Columbia University, NY, USA
| | - Luis J Sigal
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
| | - George C Prendergast
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA
- Lankenau Institute of Medical Research, Wynnewood, PA, USA
| | - Sangwon V Kim
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA.
- Sidney Kimmel Cancer Center, Jefferson Health, Philadelphia, PA, USA.
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30
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Wan T, Wang Y, He K, Zhu S. Microbial sensing in the intestine. Protein Cell 2023; 14:824-860. [PMID: 37191444 PMCID: PMC10636641 DOI: 10.1093/procel/pwad028] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/04/2023] [Indexed: 05/17/2023] Open
Abstract
The gut microbiota plays a key role in host health and disease, particularly through their interactions with the immune system. Intestinal homeostasis is dependent on the symbiotic relationships between the host and the diverse gut microbiota, which is influenced by the highly co-evolved immune-microbiota interactions. The first step of the interaction between the host and the gut microbiota is the sensing of the gut microbes by the host immune system. In this review, we describe the cells of the host immune system and the proteins that sense the components and metabolites of the gut microbes. We further highlight the essential roles of pattern recognition receptors (PRRs), the G protein-coupled receptors (GPCRs), aryl hydrocarbon receptor (AHR) and the nuclear receptors expressed in the intestinal epithelial cells (IECs) and the intestine-resident immune cells. We also discuss the mechanisms by which the disruption of microbial sensing because of genetic or environmental factors causes human diseases such as the inflammatory bowel disease (IBD).
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Affiliation(s)
- Tingting Wan
- Division of Life Sciences and Medicine, The CAS Key Laboratory of Innate Immunity and Chronic Disease, Institute of Immunology, School of Basic Medical Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Yalong Wang
- Division of Life Sciences and Medicine, The CAS Key Laboratory of Innate Immunity and Chronic Disease, Institute of Immunology, School of Basic Medical Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Kaixin He
- Division of Life Sciences and Medicine, The CAS Key Laboratory of Innate Immunity and Chronic Disease, Institute of Immunology, School of Basic Medical Sciences, University of Science and Technology of China, Hefei 230027, China
| | - Shu Zhu
- Division of Life Sciences and Medicine, The CAS Key Laboratory of Innate Immunity and Chronic Disease, Institute of Immunology, School of Basic Medical Sciences, University of Science and Technology of China, Hefei 230027, China
- Department of Digestive Disease, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei 230001, China
- Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei 230601, China
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31
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Suchanek O, Ferdinand JR, Tuong ZK, Wijeyesinghe S, Chandra A, Clauder AK, Almeida LN, Clare S, Harcourt K, Ward CJ, Bashford-Rogers R, Lawley T, Manz RA, Okkenhaug K, Masopust D, Clatworthy MR. Tissue-resident B cells orchestrate macrophage polarisation and function. Nat Commun 2023; 14:7081. [PMID: 37925420 PMCID: PMC10625551 DOI: 10.1038/s41467-023-42625-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 10/17/2023] [Indexed: 11/06/2023] Open
Abstract
B cells play a central role in humoral immunity but also have antibody-independent functions. Studies to date have focused on B cells in blood and secondary lymphoid organs but whether B cells reside in non-lymphoid organs (NLO) in homeostasis is unknown. Here we identify, using intravenous labeling and parabiosis, a bona-fide tissue-resident B cell population in lung, liver, kidney and urinary bladder, a substantial proportion of which are B-1a cells. Tissue-resident B cells are present in neonatal tissues and also in germ-free mice NLOs, albeit in lower numbers than in specific pathogen-free mice and following co-housing with 'pet-store' mice. They spatially co-localise with macrophages and regulate their polarization and function, promoting an anti-inflammatory phenotype, in-part via interleukin-10 production, with effects on bacterial clearance during urinary tract infection. Thus, our data reveal a critical role for tissue-resident B cells in determining the homeostatic 'inflammatory set-point' of myeloid cells, with important consequences for tissue immunity.
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Affiliation(s)
- Ondrej Suchanek
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK
- Cambridge University Hospitals NHS Foundation Trust, and NIHR Cambridge Biomedical Research Centre, Cambridge, UK
| | - John R Ferdinand
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK
| | - Zewen K Tuong
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK
| | - Sathi Wijeyesinghe
- Department of Microbiology and Immunology, Centre for Immunology, University of Minnesota, Minneapolis, MI, USA
| | - Anita Chandra
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Ann-Katrin Clauder
- Institute for Systemic Inflammation Research, University of Luebeck, Luebeck, Germany
| | - Larissa N Almeida
- Institute for Systemic Inflammation Research, University of Luebeck, Luebeck, Germany
| | - Simon Clare
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | | | - Christopher J Ward
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK
| | | | - Trevor Lawley
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Rudolf A Manz
- Institute for Systemic Inflammation Research, University of Luebeck, Luebeck, Germany
| | - Klaus Okkenhaug
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - David Masopust
- Department of Microbiology and Immunology, Centre for Immunology, University of Minnesota, Minneapolis, MI, USA
| | - Menna R Clatworthy
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK.
- Cambridge University Hospitals NHS Foundation Trust, and NIHR Cambridge Biomedical Research Centre, Cambridge, UK.
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK.
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32
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Denis AA, Toledo D, Hakim QA, Quintana AA, Escobar CR, Oluwole SA, Costa A, Garcia EG, Hill AR, Agatemor C. Ligand-Independent Activation of Aryl Hydrocarbon Receptor and Attenuation of Glutamine Levels by Natural Deep Eutectic Solvent. Chembiochem 2023; 24:e202300540. [PMID: 37615422 DOI: 10.1002/cbic.202300540] [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: 08/02/2023] [Revised: 08/24/2023] [Accepted: 08/24/2023] [Indexed: 08/25/2023]
Abstract
Natural deep eutectic solvents (NADESs) are emerging sustainable alternatives to conventional organic solvents. Beyond their role as laboratory solvents, NADESs are increasingly explored in drug delivery and as therapeutics. Their increasing applications notwithstanding, our understanding of how they interact with biomolecules at multiple levels - metabolome, proteome, and transcriptome - within human cell remain poor. Here, we deploy integrated metabolomics, proteomics, and transcriptomics to probe how NADESs perturb the molecular landscape of human cells. In a human cell line model, we found that an archetypal NADES derived from choline and geranic acid (CAGE) significantly altered the metabolome, proteome, and transcriptome. CAGE upregulated indole-3-lactic acid and 4-hydroxyphenyllactic acid levels, resulting in ligand-independent activation of aryl hydrocarbon receptor to signal the transcription of genes with implications for inflammation, immunomodulation, cell development, and chemical detoxification. Further, treating the cell line with CAGE downregulated glutamine biosynthesis, a nutrient rapidly proliferating cancer cells require. CAGE's ability to attenuate glutamine levels is potentially relevant for cancer treatment. These findings suggest that NADESs, even when derived from natural components like choline, can indirectly modulate cell biology at multiple levels, expanding their applications beyond chemistry to biomedicine and biotechnology.
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Affiliation(s)
| | - Daniela Toledo
- Department of Chemistry, University of Miami, Miami, FL-33146, USA
| | | | | | | | | | - Arthur Costa
- Department of Chemistry, University of Miami, Miami, FL-33146, USA
| | | | - Anaya Rose Hill
- Department of Biology, University of Miami, Miami, FL-33146, USA
| | - Christian Agatemor
- Department of Chemistry, University of Miami, Miami, FL-33146, USA
- Department of Biology, University of Miami, Miami, FL-33146, USA
- Sylvester Comprehensive Cancer Center, University of Miami Health System, University of Miami, Miami, FL-33136, USA
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33
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Zhao M, Kronenberg M. Innate-like T Cells: Connecting the Dots Linking Microscopic Intestinal Inflammation to Spondyloarthritis. Arthritis Rheumatol 2023; 75:1907-1909. [PMID: 37488948 PMCID: PMC10615776 DOI: 10.1002/art.42660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 07/11/2023] [Indexed: 07/26/2023]
Affiliation(s)
- Meng Zhao
- Oklahoma Medical Research Foundation, Oklahoma City
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34
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Hou JJ, Ma AH, Qin YH. Activation of the aryl hydrocarbon receptor in inflammatory bowel disease: insights from gut microbiota. Front Cell Infect Microbiol 2023; 13:1279172. [PMID: 37942478 PMCID: PMC10628454 DOI: 10.3389/fcimb.2023.1279172] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 10/09/2023] [Indexed: 11/10/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic inflammatory intestinal disease that affects more than 3.5 million people, with rising prevalence. It deeply affects patients' daily life, increasing the burden on patients, families, and society. Presently, the etiology of IBD remains incompletely clarified, while emerging evidence has demonstrated that altered gut microbiota and decreased aryl hydrocarbon receptor (AHR) activity are closely associated with IBD. Furthermore, microbial metabolites are capable of AHR activation as AHR ligands, while the AHR, in turn, affects the microbiota through various pathways. In light of the complex connection among gut microbiota, the AHR, and IBD, it is urgent to review the latest research progress in this field. In this review, we describe the role of gut microbiota and AHR activation in IBD and discussed the crosstalk between gut microbiota and the AHR in the context of IBD. Taken as a whole, we propose new therapeutic strategies targeting the AHR-microbiota axis for IBD, even for other related diseases caused by AHR-microbiota dysbiosis.
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Affiliation(s)
| | | | - Yue-Hua Qin
- Department of Gastroenterology, Shaoxing People’s Hospital, Shaoxing, China
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35
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Yakou MH, Ghilas S, Tran K, Liao Y, Afshar-Sterle S, Kumari A, Schmid K, Dijkstra C, Inguanti C, Ostrouska S, Wilcox J, Smith M, Parathan P, Allam A, Xue HH, Belz GT, Mariadason JM, Behren A, Drummond GR, Ruscher R, Williams DS, Pal B, Shi W, Ernst M, Raghu D, Mielke LA. TCF-1 limits intraepithelial lymphocyte antitumor immunity in colorectal carcinoma. Sci Immunol 2023; 8:eadf2163. [PMID: 37801516 DOI: 10.1126/sciimmunol.adf2163] [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: 10/06/2022] [Accepted: 08/07/2023] [Indexed: 10/08/2023]
Abstract
Intraepithelial lymphocytes (IELs), including αβ and γδ T cells (T-IELs), constantly survey and play a critical role in maintaining the gastrointestinal epithelium. We show that cytotoxic molecules important for defense against cancer were highly expressed by T-IELs in the small intestine. In contrast, abundance of colonic T-IELs was dependent on the microbiome and displayed higher expression of TCF-1/TCF7 and a reduced effector and cytotoxic profile, including low expression of granzymes. Targeted deletion of TCF-1 in γδ T-IELs induced a distinct effector profile and reduced colon tumor formation in mice. In addition, TCF-1 expression was significantly reduced in γδ T-IELs present in human colorectal cancers (CRCs) compared with normal healthy colon, which strongly correlated with an enhanced γδ T-IEL effector phenotype and improved patient survival. Our work identifies TCF-1 as a colon-specific T-IEL transcriptional regulator that could inform new immunotherapy strategies to treat CRC.
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Affiliation(s)
- Marina H Yakou
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Sonia Ghilas
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Kelly Tran
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Yang Liao
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Shoukat Afshar-Sterle
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Anita Kumari
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Kevin Schmid
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Christine Dijkstra
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Chantelle Inguanti
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Simone Ostrouska
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Jordan Wilcox
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Maxine Smith
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Queensland, Australia
| | - Pavitha Parathan
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Amr Allam
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Hai-Hui Xue
- Center for Discovery and Innovation, Hackensack University Medical Center, Nutley, NJ, USA
- New Jersey Veterans Affairs Health Care System, East Orange, NJ, USA
| | - Gabrielle T Belz
- University of Queensland Frazer Institute, Faculty of Medicine, University of Queensland, Woolloongabba, Queensland 4102, Australia
| | - John M Mariadason
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Andreas Behren
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Grant R Drummond
- Centre for Cardiovascular Biology and Disease Research; Department of Microbiology, Anatomy, Physiology and Pharmacology; and School of Agriculture, Biomedicine, and Environment, La Trobe University, Bundoora, Victoria, Australia
| | - Roland Ruscher
- Centre for Molecular Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, Queensland, Australia
| | - David S Williams
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
- Department of Anatomical Pathology, Austin Health, Heidelberg, Victoria, Australia
| | - Bhupinder Pal
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Wei Shi
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Matthias Ernst
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Dinesh Raghu
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
| | - Lisa A Mielke
- Olivia Newton-John Cancer Research Institute and La Trobe University School of Cancer Medicine, Heidelberg, Victoria 3084, Australia
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36
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Piwarski SA, Salisbury TB. The effects of environmental aryl hydrocarbon receptor ligands on signaling and cell metabolism in cancer. Biochem Pharmacol 2023; 216:115771. [PMID: 37652105 DOI: 10.1016/j.bcp.2023.115771] [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: 06/14/2023] [Revised: 08/18/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
Dioxin and dioxin-like compounds are chlorinated organic pollutants formed during the manufacturing of other chemicals. Dioxins are ligands of the aryl hydrocarbon receptor (AHR), that induce AHR-mediated biochemical and toxic responses and are persistent in the environment. 2,3,7,8- tetrachlorodibenzo para dioxin (TCDD) is the prototypical AHR ligand and its effects represent dioxins. TCDD induces toxicity, immunosuppression and is a suspected tumor promoter. The role of TCDD in cancer however is debated and context-dependent. Environmental particulate matter, polycyclic aromatic hydrocarbons, perfluorooctane sulfonamide, endogenous AHR ligands, and cAMP signaling activate AHR through TCDD-independent pathways. The effect of activated AHR in cancer is context-dependent. The ability of FDA-approved drugs to modulate AHR activity has sparked interest in their repurposing for cancer therapy. TCDD by interfering with endogenous pathways, and overstimulating other endogenous pathways influences all stages of cancer. Herein we review signaling mechanisms that activate AHR and mechanisms by which activated AHR modulates signaling in cancer including affected metabolic pathways.
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Affiliation(s)
- Sean A Piwarski
- Duke Cancer Institute, Department of GU Oncology, Duke University Medical Center, 905 South Lasalle Street, Durham, NC 27710, USA.
| | - Travis B Salisbury
- Department of Biomedical Sciences, Joan C. Edwards School of Medicine, Marshall University, 1 John Marshall Drive, Huntington, WV 25755, USA.
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37
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Hada A, Li L, Kandel A, Jin Y, Xiao Z. Characterization of Bovine Intraepithelial T Lymphocytes in the Gut. Pathogens 2023; 12:1173. [PMID: 37764981 PMCID: PMC10535955 DOI: 10.3390/pathogens12091173] [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: 08/23/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
Intraepithelial T lymphocytes (T-IELs), which constitute over 50% of the total T lymphocytes in the animal, patrol the mucosal epithelial lining to defend against pathogen invasion while maintaining gut homeostasis. In addition to expressing T cell markers such as CD4 and CD8, T-IELs display T cell receptors (TCR), including either TCRαβ or TCRγδ. Both humans and mice share similar T-IEL subsets: TCRγδ+, TCRαβ+CD8αα+, TCRαβ+CD4+, and TCRαβ+CD8αβ+. Among these subsets, human T-IELs are predominantly TCRαβ+ (over 80%), whereas those in mice are mostly TCRγδ+ (~60%). Of note, the majority of the TCRγδ+ subset expresses CD8αα in both species. Although T-IELs have been extensively studied in humans and mice, their profiles in cattle have not been well examined. Our study is the first to characterize bovine T-IELs using flow cytometry, where we identified several distinct features. The percentage of TCRγδ+ was comparable to that of TCRαβ+ T-IELs (both ~50% of CD3+), and the majority of bovine TCRγδ+ T-IELs did not express CD8 (CD8-) (above 60%). Furthermore, about 20% of TCRαβ+ T-IELs were CD4+CD8αβ+, and the remaining TCRαβ+ T-IELs were evenly distributed between CD4+ and CD8αβ+ (~40% of TCRαβ+ T-IELs each) with no TCRαβ+CD8αα+ identified. Despite these unique properties, bovine T-IELs, similar to those in humans and mice, expressed a high level of CD69, an activation and tissue-retention marker, and a low level of CD62L, a lymphoid adhesion marker. Moreover, bovine T-IELs produced low levels of inflammatory cytokines such as IFNγ and IL17A, and secreted small amounts of the immune regulatory cytokine TGFβ1. Hence, bovine T-IELs' composition largely differs from that of human and mouse, with the dominance of the CD8- population among TCRγδ+ T-IELs, the substantial presence of TCRαβ+CD4+CD8αβ+ cells, and the absence of TCRαβ+CD8αα+ T-IELs. These results provide the groundwork for conducting future studies to examine how bovine T-IELs respond to intestinal pathogens and maintain the integrity of the gut epithelial barrier in animals.
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Affiliation(s)
| | | | | | | | - Zhengguo Xiao
- Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USA; (A.H.); (L.L.); (A.K.); (Y.J.)
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38
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Suchanek O, Clatworthy MR. Homeostatic role of B-1 cells in tissue immunity. Front Immunol 2023; 14:1106294. [PMID: 37744333 PMCID: PMC10515722 DOI: 10.3389/fimmu.2023.1106294] [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: 11/23/2022] [Accepted: 02/27/2023] [Indexed: 09/26/2023] Open
Abstract
To date, studies of tissue-resident immunity have mainly focused on innate immune cells and T cells, with limited data on B cells. B-1 B cells are a unique subset of B cells with innate-like properties, enriched in murine pleural and peritoneal cavities and distinct from conventional B-2 cells in their ontogeny, phenotype and function. Here we discuss how B-1 cells represent exemplar tissue-resident immune cells, summarizing the evidence for their long-term persistence & self-renewal within tissues, differential transcriptional programming shaped by organ-specific environmental cues, as well as their tissue-homeostatic functions. Finally, we review the emerging data supporting the presence and homeostatic role of B-1 cells across non-lymphoid organs (NLOs) both in mouse and human.
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Affiliation(s)
- Ondrej Suchanek
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
- NIHR Cambridge Biomedical Research Centre, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Menna R. Clatworthy
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
- NIHR Cambridge Biomedical Research Centre, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
- Wellcome Sanger Institute, Hinxton, United Kingdom
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39
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Lai Y, Wu X, Chao E, Bloomstein JD, Wei G, Hwang ST, Shi Z. Impact of Gut Bacterial Metabolites on Psoriasis and Psoriatic Arthritis: Current Status and Future Perspectives. J Invest Dermatol 2023; 143:1657-1666. [PMID: 37422760 DOI: 10.1016/j.jid.2023.05.012] [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: 02/08/2023] [Revised: 05/04/2023] [Accepted: 05/17/2023] [Indexed: 07/10/2023]
Abstract
There is growing evidence that supports a role of gut dysbiosis in the pathogenesis of psoriasis (Pso). Thus, probiotic supplementation and fecal microbiota transplantation may serve as promising preventive and therapeutic strategies for patients with Pso. One of the basic mechanisms through which the gut microbiota interacts with the host is through bacteria-derived metabolites, usually intermediate or end products produced by microbial metabolism. In this study, we provide an up-to-date review of the most recent literature on microbial-derived metabolites and highlight their roles in the immune system, with a special focus on Pso and one of its most common comorbidities, psoriatic arthritis.
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Affiliation(s)
- Yuhsien Lai
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xuesong Wu
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Ellen Chao
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | | | - Grace Wei
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Sam T Hwang
- Department of Dermatology, University of California, Davis, Sacramento, California, USA
| | - Zhenrui Shi
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
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40
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Zhang C, Cao Z, Lei H, Chen C, Du R, Song Y, Zhang C, Zhou J, Lu Y, Huang L, Shen P, Zhang L. Discovery of a novel small molecule with efficacy in protecting against inflammation in vitro and in vivo by enhancing macrophages activation. Biomed Pharmacother 2023; 165:115273. [PMID: 37536035 DOI: 10.1016/j.biopha.2023.115273] [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: 06/12/2023] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 08/05/2023] Open
Abstract
Immune response and inflammation highly contribute to many metabolic syndromes such as inflammatory bowel disease (IBD), ageing and cancer with disruption of host metabolic homeostasis and the gut microbiome. Icariin-1 (GH01), a small-molecule flavonoid derived from Epimedium, has been shown to protect against systemic inflammation. However, the molecular mechanisms by which GH01 ameliorates ulcerative colitis via regulation of microbiota-mediated macrophages polarization remain elusive. In this study, we found that GH01 effectively ameliorated dextran sulfate sodium (DSS)-induced colitis symptoms in mice. Disruption of intestinal barrier function, commensal microbiota and its metabolites were also significantly restored by GH01 in a dose-dependent manner. Of note, we also found that GH01 enhanced phagocytic ability of macrophages and switched macrophage phenotype from M1 to M2 both in vitro and in vivo. Such macrophage polarization was highly associated with intestinal barrier integrity and the gut microbial community. Consequently, GH01 exhibited strong anti-inflammatory capacity by inhibiting TLR4 and NF-κB pathways and proinflammatory factors (IL-6). These findings suggested that GH01 might be a potential nutritional intervention strategy for IBD treatment with the gut microbial community-meditated macrophage as the therapeutic targets.
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Affiliation(s)
- Cui Zhang
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi 530004, China; State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences (CAS), Wuhan 430071, China
| | - Zheng Cao
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences (CAS), Wuhan 430071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hehua Lei
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences (CAS), Wuhan 430071, China
| | - Chuan Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences (CAS), Wuhan 430071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruichen Du
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences (CAS), Wuhan 430071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuchen Song
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences (CAS), Wuhan 430071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ce Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences (CAS), Wuhan 430071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinlin Zhou
- Golden Health (Guangdong) Biotechnology Co., Ltd, Foshan 528225, China
| | - Yujing Lu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China; Golden Health (Guangdong) Biotechnology Co., Ltd, Foshan 528225, China
| | - Luodong Huang
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi 530004, China.
| | - Peihong Shen
- College of Life Science and Technology, Guangxi University, Nanning, Guangxi 530004, China.
| | - Limin Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences (CAS), Wuhan 430071, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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41
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Fathallah S, Abdellatif A, Saadeldin MK. Unleashing nature's potential and limitations: Exploring molecular targeted pathways and safe alternatives for the treatment of multiple sclerosis (Review). MEDICINE INTERNATIONAL 2023; 3:42. [PMID: 37680650 PMCID: PMC10481116 DOI: 10.3892/mi.2023.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/14/2023] [Indexed: 09/09/2023]
Abstract
Driven by the limitations and obstacles of the available approaches and medications for multiple sclerosis (MS) that still cannot treat the disease, but only aid in accelerating the recovery from its attacks, the use of naturally occurring molecules as a potentially safe and effective treatment for MS is being explored in model organisms. MS is a devastating disease involving the brain and spinal cord, and its symptoms vary widely. Multiple molecular pathways are involved in the pathogenesis of the disease. The present review showcases the recent advancements in harnessing nature's resources to combat MS. By deciphering the molecular pathways involved in the pathogenesis of the disease, a wealth of potential therapeutic agents is uncovered that may revolutionize the treatment of MS. Thus, a new hope can be envisioned in the future, aiming at paving the way toward identifying novel safe alternatives to improve the lives of patients with MS.
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Affiliation(s)
- Sara Fathallah
- Biotechnology Program, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
| | - Ahmed Abdellatif
- Biotechnology Program, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
- Biology Department, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
| | - Mona Kamal Saadeldin
- Biotechnology Program, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
- Biology Department, School of Science and Engineering, American University in Cairo, New Cairo 11835, Egypt
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
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42
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Major J, Crotta S, Finsterbusch K, Chakravarty P, Shah K, Frederico B, D'Antuono R, Green M, Meader L, Suarez-Bonnet A, Priestnall S, Stockinger B, Wack A. Endothelial AHR activity prevents lung barrier disruption in viral infection. Nature 2023; 621:813-820. [PMID: 37587341 PMCID: PMC7615136 DOI: 10.1038/s41586-023-06287-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 06/06/2023] [Indexed: 08/18/2023]
Abstract
Disruption of the lung endothelial-epithelial cell barrier following respiratory virus infection causes cell and fluid accumulation in the air spaces and compromises vital gas exchange function1. Endothelial dysfunction can exacerbate tissue damage2,3, yet it is unclear whether the lung endothelium promotes host resistance against viral pathogens. Here we show that the environmental sensor aryl hydrocarbon receptor (AHR) is highly active in lung endothelial cells and protects against influenza-induced lung vascular leakage. Loss of AHR in endothelia exacerbates lung damage and promotes the infiltration of red blood cells and leukocytes into alveolar air spaces. Moreover, barrier protection is compromised and host susceptibility to secondary bacterial infections is increased when endothelial AHR is missing. AHR engages tissue-protective transcriptional networks in endothelia, including the vasoactive apelin-APJ peptide system4, to prevent a dysplastic and apoptotic response in airway epithelial cells. Finally, we show that protective AHR signalling in lung endothelial cells is dampened by the infection itself. Maintenance of protective AHR function requires a diet enriched in naturally occurring AHR ligands, which activate disease tolerance pathways in lung endothelia to prevent tissue damage. Our findings demonstrate the importance of endothelial function in lung barrier immunity. We identify a gut-lung axis that affects lung damage following encounters with viral pathogens, linking dietary composition and intake to host fitness and inter-individual variations in disease outcome.
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Affiliation(s)
- Jack Major
- Immunoregulation Laboratory, Francis Crick Institute, London, UK.
- Laboratory of Epithelial Barrier Immunity, New York University Langone Health, New York, NY, USA.
| | - Stefania Crotta
- Immunoregulation Laboratory, Francis Crick Institute, London, UK
| | | | | | - Kathleen Shah
- AhRimmunity Laboratory, Francis Crick Institute, London, UK
- Immunology Research Unit, GSK, Stevenage, UK
| | - Bruno Frederico
- Immunobiology Laboratory, Francis Crick Institute, London, UK
- Early Oncology, R&D, AstraZeneca, Cambridge, UK
| | | | - Mary Green
- Experimental Histopathology, Francis Crick Institute, London, UK
| | - Lucy Meader
- Experimental Histopathology, Francis Crick Institute, London, UK
| | - Alejandro Suarez-Bonnet
- Experimental Histopathology, Francis Crick Institute, London, UK
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hertfordshire, UK
| | - Simon Priestnall
- Experimental Histopathology, Francis Crick Institute, London, UK
- Department of Pathobiology and Population Sciences, Royal Veterinary College, Hertfordshire, UK
| | | | - Andreas Wack
- Immunoregulation Laboratory, Francis Crick Institute, London, UK.
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43
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Yoo JS, Oh SF. Unconventional immune cells in the gut mucosal barrier: regulation by symbiotic microbiota. Exp Mol Med 2023; 55:1905-1912. [PMID: 37696893 PMCID: PMC10545787 DOI: 10.1038/s12276-023-01088-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 07/19/2023] [Accepted: 08/08/2023] [Indexed: 09/13/2023] Open
Abstract
The mammalian gut is the most densely colonized organ by microbial species, which are in constant contact with the host throughout life. Hosts have developed multifaceted cellular and molecular mechanisms to distinguish and respond to benign and pathogenic bacteria. In addition to relatively well-characterized innate and adaptive immune cells, a growing body of evidence shows additional important players in gut mucosal immunity. Among them, unconventional immune cells, including innate lymphoid cells (ILCs) and unconventional T cells, are essential for maintaining homeostasis. These cells rapidly respond to bacterial signals and bridge the innate immunity and adaptive immunity in the mucosal barrier. Here, we focus on the types and roles of these immune cells in physiological and pathological conditions as prominent mechanisms by which the host immune system communicates with the gut microbiota in health and diseases.
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Affiliation(s)
- Ji-Sun Yoo
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Sungwhan F Oh
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, USA.
- Graduate Program in Immunology, Harvard Medical School, Boston, MA, USA.
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44
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Vorobyev A, Ludwig RJ. Forschung für die Praxis: Ernährung und Mikrobiom bei Autoimmunkrankheiten. J Dtsch Dermatol Ges 2023; 21:958-963. [PMID: 37700405 DOI: 10.1111/ddg.15101_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 03/17/2023] [Indexed: 09/14/2023]
Abstract
ZusammenfassungDie Häufigkeit von Autoimmunerkrankungen in Industrieländern hat während der letzten Jahrzehnte ständig zugenommen. Diese Erkrankungen führen zu erhöhter Sterblichkeit sowie anhaltender Beeinträchtigung der Lebensqualität der Patienten und bedeuten eine große medizinische Belastung. Die Behandlung von Autoimmunkrankheiten beruht häufig auf unspezifischer Immunsuppression, was das Risiko von Infektionskrankheiten und Krebsmanifestationen erhöht. Die Pathogenese von Autoimmunerkrankungen ist komplex und umfasst nicht nur genetische Faktoren, sondern auch Umwelteinflüsse, die als Grund für die Zunahme von Autoimmunerkrankungen angesehen werden. Zahlreiche Umweltfaktoren wie Infektionen, Rauchen, Medikamente oder Ernährung können das Auftreten von Autoimmunität entweder fördern oder verhindern. Die Mechanismen der Beeinflussung durch Umwelteinflüsse sind jedoch komplex und derzeit noch nicht eindeutig geklärt. Die Entschlüsselung dieser Wechselwirkungen könnte unser Verständnis der Autoimmunität verbessern und neue Behandlungsmöglichkeiten für die Patienten eröffnen.
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Affiliation(s)
- Artem Vorobyev
- Abteilung für Dermatologie, Allergologie und Venerologie, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
- Lübecker Institut für experimentelle Dermatologie, Lübeck
| | - Ralf J Ludwig
- Abteilung für Dermatologie, Allergologie und Venerologie, Universitätsklinikum Schleswig-Holstein, Campus Lübeck
- Lübecker Institut für experimentelle Dermatologie, Lübeck
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45
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Vorobyev A, Ludwig RJ. Research in practice: Diet and microbiome in autoimmune diseases. J Dtsch Dermatol Ges 2023; 21:958-962. [PMID: 37235511 DOI: 10.1111/ddg.15101] [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: 11/02/2022] [Revised: 03/06/2023] [Accepted: 03/17/2023] [Indexed: 05/28/2023]
Abstract
The incidence of autoimmune diseases in industrialized countries is constantly increasing over past decades. These diseases lead to increased mortality and persistent reduction in quality of life of the patients, posing a severe medical burden. Treatment of autoimmune diseases is often based on unspecific immune suppression, increasing the risk of infectious diseases as well as cancer manifestation. Pathogenesis of autoimmune conditions is complex and includes not only genetic factors, but also environmental influence, which is considered to be the reason for the rise of incidence of autoimmune diseases. Environmental factors comprise numerous elements, such as infections, smoking, medication, diet etc., which can either promote or prevent the onset of autoimmunity. However, the mechanisms of environmental influence are complex and for this moment not clearly understood. Deciphering of these interactions could enhance our comprehension of autoimmunity and provide some novel treatment options for the patients.
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Affiliation(s)
- Artem Vorobyev
- Department of Dermatology, Allergology and Venereology, University Hospital Schleswig-Holstein, Campus Lübeck, Germany
- Lübeck Institute of Experimental Dermatology, Lübeck, Germany
| | - Ralf J Ludwig
- Department of Dermatology, Allergology and Venereology, University Hospital Schleswig-Holstein, Campus Lübeck, Germany
- Lübeck Institute of Experimental Dermatology, Lübeck, Germany
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Wiggins BG, Wang YF, Burke A, Grunberg N, Vlachaki Walker JM, Dore M, Chahrour C, Pennycook BR, Sanchez-Garrido J, Vernia S, Barr AR, Frankel G, Birdsey GM, Randi AM, Schiering C. Endothelial sensing of AHR ligands regulates intestinal homeostasis. Nature 2023; 621:821-829. [PMID: 37586410 PMCID: PMC10533400 DOI: 10.1038/s41586-023-06508-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 08/02/2023] [Indexed: 08/18/2023]
Abstract
Endothelial cells line the blood and lymphatic vasculature, and act as an essential physical barrier, control nutrient transport, facilitate tissue immunosurveillance and coordinate angiogenesis and lymphangiogenesis1,2. In the intestine, dietary and microbial cues are particularly important in the regulation of organ homeostasis. However, whether enteric endothelial cells actively sense and integrate such signals is currently unknown. Here we show that the aryl hydrocarbon receptor (AHR) acts as a critical node for endothelial cell sensing of dietary metabolites in adult mice and human primary endothelial cells. We first established a comprehensive single-cell endothelial atlas of the mouse small intestine, uncovering the cellular complexity and functional heterogeneity of blood and lymphatic endothelial cells. Analyses of AHR-mediated responses at single-cell resolution identified tissue-protective transcriptional signatures and regulatory networks promoting cellular quiescence and vascular normalcy at steady state. Endothelial AHR deficiency in adult mice resulted in dysregulated inflammatory responses and the initiation of proliferative pathways. Furthermore, endothelial sensing of dietary AHR ligands was required for optimal protection against enteric infection. In human endothelial cells, AHR signalling promoted quiescence and restrained activation by inflammatory mediators. Together, our data provide a comprehensive dissection of the effect of environmental sensing across the spectrum of enteric endothelia, demonstrating that endothelial AHR signalling integrates dietary cues to maintain tissue homeostasis by promoting endothelial cell quiescence and vascular normalcy.
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Affiliation(s)
- Benjamin G Wiggins
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK.
- MRC London Institute of Medical Sciences, London, UK.
| | - Yi-Fang Wang
- MRC London Institute of Medical Sciences, London, UK
| | - Alice Burke
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- MRC London Institute of Medical Sciences, London, UK
| | - Nil Grunberg
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- MRC London Institute of Medical Sciences, London, UK
| | - Julia M Vlachaki Walker
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- MRC London Institute of Medical Sciences, London, UK
| | - Marian Dore
- MRC London Institute of Medical Sciences, London, UK
| | | | - Betheney R Pennycook
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- MRC London Institute of Medical Sciences, London, UK
| | | | - Santiago Vernia
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- MRC London Institute of Medical Sciences, London, UK
| | - Alexis R Barr
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK
- MRC London Institute of Medical Sciences, London, UK
| | - Gad Frankel
- Department of Life Sciences, Imperial College London, London, UK
| | - Graeme M Birdsey
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Anna M Randi
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Chris Schiering
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, UK.
- MRC London Institute of Medical Sciences, London, UK.
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47
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Feitelson MA, Arzumanyan A, Medhat A, Spector I. Short-chain fatty acids in cancer pathogenesis. Cancer Metastasis Rev 2023; 42:677-698. [PMID: 37432606 PMCID: PMC10584782 DOI: 10.1007/s10555-023-10117-y] [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: 01/11/2023] [Accepted: 06/05/2023] [Indexed: 07/12/2023]
Abstract
Cancer is a multi-step process that can be viewed as a cellular and immunological shift away from homeostasis in response to selected infectious agents, mutations, diet, and environmental carcinogens. Homeostasis, which contributes importantly to the definition of "health," is maintained, in part by the production of short-chain fatty acids (SCFAs), which are metabolites of specific gut bacteria. Alteration in the composition of gut bacteria, or dysbiosis, is often a major risk factor for some two dozen tumor types. Dysbiosis is often characterized by diminished levels of SCFAs in the stool, and the presence of a "leaky gut," permitting the penetration of microbes and microbial derived molecules (e.g., lipopolysaccharides) through the gut wall, thereby triggering chronic inflammation. SCFAs attenuate inflammation by inhibiting the activation of nuclear factor kappa B, by decreasing the expression of pro-inflammatory cytokines such as tumor necrosis factor alpha, by stimulating the expression of anti-inflammatory cytokines such as interleukin-10 and transforming growth factor beta, and by promoting the differentiation of naïve T cells into T regulatory cells, which down-regulate immune responses by immunomodulation. SCFA function epigenetically by inhibiting selected histone acetyltransferases that alter the expression of multiple genes and the activity of many signaling pathways (e.g., Wnt, Hedgehog, Hippo, and Notch) that contribute to the pathogenesis of cancer. SCFAs block cancer stem cell proliferation, thereby potentially delaying or inhibiting cancer development or relapse by targeting genes and pathways that are mutated in tumors (e.g., epidermal growth factor receptor, hepatocyte growth factor, and MET) and by promoting the expression of tumor suppressors (e.g., by up-regulating PTEN and p53). When administered properly, SCFAs have many advantages compared to probiotic bacteria and fecal transplants. In carcinogenesis, SCFAs are toxic against tumor cells but not to surrounding tissue due to differences in their metabolic fate. Multiple hallmarks of cancer are also targets of SCFAs. These data suggest that SCFAs may re-establish homeostasis without overt toxicity and either delay or prevent the development of various tumor types.
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Affiliation(s)
- Mark A Feitelson
- Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA, 19122, USA.
| | - Alla Arzumanyan
- Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA, 19122, USA
| | - Arvin Medhat
- Department of Molecular Cell Biology, Islamic Azad University Tehran North Branch, Tehran, 1975933411, Iran
| | - Ira Spector
- SFA Therapeutics, Jenkintown, PA, 19046, USA
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48
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Xing J, Gumerov VM, Zhulin IB. Origin and functional diversification of PAS domain, a ubiquitous intracellular sensor. SCIENCE ADVANCES 2023; 9:eadi4517. [PMID: 37647406 PMCID: PMC10468136 DOI: 10.1126/sciadv.adi4517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 07/28/2023] [Indexed: 09/01/2023]
Abstract
Signal perception is a key function in regulating biological activities and adapting to changing environments. Per-Arnt-Sim (PAS) domains are ubiquitous sensors found in diverse receptors in bacteria, archaea, and eukaryotes, but their origins, distribution across the tree of life, and extent of their functional diversity are not fully characterized. Here, we show that using sequence conservation and structural information, it is possible to propose specific and potential functions for a large portion of nearly 3 million PAS domains. Our analysis suggests that PAS domains originated in bacteria and were horizontally transferred to archaea and eukaryotes. We reveal that gas sensing via a heme cofactor evolved independently in several lineages, whereas redox and light sensing via flavin adenine dinucleotide and flavin mononucleotide cofactors have the same origin. The close relatedness of human PAS domains to those in bacteria provides an opportunity for drug design by exploring potential natural ligands and cofactors for bacterial homologs.
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Affiliation(s)
- Jiawei Xing
- Department of Microbiology, The Ohio State University, Columbus, OH, USA
- Translational Data Analytics Institute, The Ohio State University, Columbus, OH USA
| | - Vadim M. Gumerov
- Department of Microbiology, The Ohio State University, Columbus, OH, USA
- Translational Data Analytics Institute, The Ohio State University, Columbus, OH USA
| | - Igor B. Zhulin
- Department of Microbiology, The Ohio State University, Columbus, OH, USA
- Translational Data Analytics Institute, The Ohio State University, Columbus, OH USA
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49
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Alonso S, Edelblum K. Metabolic regulation of γδ intraepithelial lymphocytes. DISCOVERY IMMUNOLOGY 2023; 2:kyad011. [PMID: 38179241 PMCID: PMC10766425 DOI: 10.1093/discim/kyad011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Elucidating the relationship between cellular metabolism and T cell function has substantially advanced our understanding of how T cells are regulated in response to activation. The metabolic profiles of circulating or peripheral T cells have been well-described, yet less is known regarding how complex local microenvironments shape or modulate the bioenergetic profile of tissue-resident T lymphocytes. Intraepithelial lymphocytes expressing the γδ T cell receptor (γδ IEL) provide immunosurveillance of the intestinal epithelium to limit tissue injury and microbial invasion; however, their activation and effector responses occur independently of antigen recognition. In this review, we will summarize the current knowledge regarding γδ T cell and IEL metabolic profiles and how this informs our understanding of γδ IEL metabolism. We will also discuss the role of the gut microbiota in shaping the metabolic profile of these sentinel lymphocytes, and in turn, how these bioenergetics contribute to regulation of γδ IEL surveillance behavior and effector function. Improved understanding of the metabolic processes involved in γδ IEL homeostasis and function may yield novel strategies to amplify the protective functions of these cells in the context of intestinal health and disease.
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Affiliation(s)
- Sara Alonso
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Karen Edelblum
- Department of Pathology, Molecular and Cell-Based Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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50
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Huang Z, de Vries S, Fogliano V, Wells JM, van der Wielen N, Capuano E. Effect of whole foods on the microbial production of tryptophan-derived aryl hydrocarbon receptor agonists in growing pigs. Food Chem 2023; 416:135804. [PMID: 36893645 DOI: 10.1016/j.foodchem.2023.135804] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/27/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023]
Abstract
Effects of whole foods on the microbial production of tryptophan-derived aryl hydrocarbon receptor (AhR) ligands in the intestine were investigated in a pig model. Ileal digesta and faeces of pigs after feeding of eighteen different foods were analyzed. Indole, indole-3-propionic acid, indole-3-acetic acid, indole-3-lactic acid, kynurenine, tryptamine, and indole-3-aldehyde were identified in ileal digesta, which were also identified in faeces but at higher concentrations except indole-3-lactic acid, together with skatole, oxindole, serotonin, and indoleacrylic acid. The panel of tryptophan catabolites in ileal digesta and faeces varied across different foods. Eggs induced the highest overall concentration of catabolites in ileal digesta dominated by indole. Amaranth induced the highest overall concentration of catabolites in faeces dominated by skatole. Using a reporter cell line, we observed many faecal samples but not ileal samples retained AhR activity. Collectively, these findings contribute to food selection targeting AhR ligands production from dietary tryptophan in the intestine.
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Affiliation(s)
- Zhan Huang
- Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands; Host-Microbe Interactomics Group, Department of Animal Sciences, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands.
| | - Sonja de Vries
- Animal Nutrition Group, Department of Animal Sciences, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands
| | - Vincenzo Fogliano
- Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands
| | - Jerry M Wells
- Host-Microbe Interactomics Group, Department of Animal Sciences, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands
| | - Nikkie van der Wielen
- Animal Nutrition Group, Department of Animal Sciences, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands; Division of Human Nutrition and Health, Department of Agrotechnology and Food Sciences, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands
| | - Edoardo Capuano
- Food Quality and Design Group, Department of Agrotechnology and Food Sciences, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, The Netherlands.
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