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Erdem I, Aktas S, Ogut S. Neohesperidin Dihydrochalcone Ameliorates Experimental Colitis via Anti-Inflammatory, Antioxidative, and Antiapoptosis Effects. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:15715-15724. [PMID: 38961631 DOI: 10.1021/acs.jafc.4c02731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
Neohesperidin dihydrochalcone (NHDC) is a citrus-originated, seminatural sweetener. There is no investigation concerning the effect of NHDC on ulcerative colitis. The purpose of this study was to determine the therapeutic and protective effects of NHDC in Wistar Albino rats. NHDC was given for 7 days after or before colitis induction. The results showed that NHDC significantly reduced the interleukin-6 (IL-6), interleukin-10 (IL-10), transforming growth factor-β1 (TGF-β1), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ) levels. Catalase levels did not show a significant difference between the groups. NHDC provided a remarkable decrease in the expression levels of cyclooxygenase-2 (COX-2), myeloperoxidase (MPO), malondialdehyde (MDA), 8-hydroxy-2'-deoxyguanosine (8-OHdG), and nuclear factor kappa B (NF-κB). Total antioxidant status (TAS) levels were significantly elevated in NHDC treatment groups, while total oxidant status (TOS) and oxidative stress index (OSI) levels were significantly decreased. NHDC provided remarkable improvement in histological symptoms such as epithelial erosion, edema, mucosal necrosis, inflammatory cell infiltration, and hemorrhage. Also, caspase-3 expression levels were statistically decreased in NHDC treatment groups. The results indicated that NHDC might be a protection or alternative treatment for ulcerative colitis.
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Affiliation(s)
- Ilayda Erdem
- Department of Nutrition and Dietetics, Aydin Adnan Menderes University, Aydin 09010, Turkey
| | - Serdar Aktas
- Faculty of Veterinary Medicine, Aydin Adnan Menderes University, Aydin 09010, Turkey
| | - Serdal Ogut
- Department of Nutrition and Dietetics, Aydin Adnan Menderes University, Aydin 09010, Turkey
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2
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Sandys O, Stokkers PCF, Te Velde AA. DAMP-ing IBD: Extinguish the Fire and Prevent Smoldering. Dig Dis Sci 2024:10.1007/s10620-024-08523-5. [PMID: 38963463 DOI: 10.1007/s10620-024-08523-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 06/04/2024] [Indexed: 07/05/2024]
Abstract
In inflammatory bowel diseases (IBD), the most promising therapies targeting cytokines or immune cell trafficking demonstrate around 40% efficacy. As IBD is a multifactorial inflammation of the intestinal tract, a single-target approach is unlikely to solve this problem, necessitating an alternative strategy that addresses its variability. One approach often overlooked by the pharmaceutically driven therapeutic options is to address the impact of environmental factors. This is somewhat surprising considering that IBD is increasingly viewed as a condition heavily influenced by such factors, including diet, stress, and environmental pollution-often referred to as the "Western lifestyle". In IBD, intestinal responses result from a complex interplay among the genetic background of the patient, molecules, cells, and the local inflammatory microenvironment where danger- and microbe-associated molecular patterns (D/MAMPs) provide an adjuvant-rich environment. Through activating DAMP receptors, this array of pro-inflammatory factors can stimulate, for example, the NLRP3 inflammasome-a major amplifier of the inflammatory response in IBD, and various immune cells via non-specific bystander activation of myeloid cells (e.g., macrophages) and lymphocytes (e.g., tissue-resident memory T cells). Current single-target biological treatment approaches can dampen the immune response, but without reducing exposure to environmental factors of IBD, e.g., by changing diet (reducing ultra-processed foods), the adjuvant-rich landscape is never resolved and continues to drive intestinal mucosal dysregulation. Thus, such treatment approaches are not enough to put out the inflammatory fire. The resultant smoldering, low-grade inflammation diminishes physiological resilience of the intestinal (micro)environment, perpetuating the state of chronic disease. Therefore, our hypothesis posits that successful interventions for IBD must address the complexity of the disease by simultaneously targeting all modifiable aspects: innate immunity cytokines and microbiota, adaptive immunity cells and cytokines, and factors that relate to the (micro)environment. Thus the disease can be comprehensively treated across the nano-, meso-, and microscales, rather than with a focus on single targets. A broader perspective on IBD treatment that also includes options to adapt the DAMPing (micro)environment is warranted.
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Affiliation(s)
- Oliver Sandys
- Tytgat Institute for Liver and Intestinal Research, AmsterdamUMC, AGEM, University of Amsterdam, Amsterdam, The Netherlands
| | - Pieter C F Stokkers
- Department of Gastroenterology and Hepatology, OLVG West, Amsterdam, The Netherlands
| | - Anje A Te Velde
- Tytgat Institute for Liver and Intestinal Research, AmsterdamUMC, AGEM, University of Amsterdam, Amsterdam, The Netherlands.
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3
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Li Y, Ramírez-Suástegui C, Harris R, Castañeda-Castro FE, Ascui G, Pérez-Jeldres T, Diaz A, Morong C, Giles DA, Chai J, Seumois G, Sanchez-Elsner T, Cummings F, Kronenberg M, Vijayanand P. Stem-like T cells are associated with the pathogenesis of ulcerative colitis in humans. Nat Immunol 2024; 25:1231-1244. [PMID: 38898157 DOI: 10.1038/s41590-024-01860-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 05/01/2024] [Indexed: 06/21/2024]
Abstract
To understand the role of T cells in the pathogenesis of ulcerative colitis (UC), we analyzed colonic T cells isolated from patients with UC and controls. Here we identified colonic CD4+ and CD8+ T lymphocyte subsets with gene expression profiles resembling stem-like progenitors, previously reported in several mouse models of autoimmune disease. Stem-like T cells were increased in inflamed areas compared to non-inflamed regions from the same patients. Furthermore, TCR sequence analysis indicated stem-like T cells were clonally related to proinflammatory T cells, suggesting their involvement in sustaining effectors that drive inflammation. Using an adoptive transfer colitis model in mice, we demonstrated that CD4+ T cells deficient in either BCL-6 or TCF1, transcription factors that promote T cell stemness, had decreased colon T cells and diminished pathogenicity. Our results establish a strong association between stem-like T cell populations and UC pathogenesis, highlighting the potential of targeting this population to improve clinical outcomes.
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Affiliation(s)
- Yingcong Li
- La Jolla Institute for Immunology, La Jolla, CA, USA
| | | | - Richard Harris
- School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | | | - Gabriel Ascui
- La Jolla Institute for Immunology, La Jolla, CA, USA
| | - Tamara Pérez-Jeldres
- Department of Gastroenterology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Gastroenterology, Hospital San Borja Arriarán, Santiago, Chile
| | - Alejandro Diaz
- Department of Gastroenterology, Hospital San Borja Arriarán, Santiago, Chile
| | - Carla Morong
- Department of Gastroenterology, Hospital San Borja Arriarán, Santiago, Chile
| | - Daniel A Giles
- La Jolla Institute for Immunology, La Jolla, CA, USA
- Lineage Therapeutics, Carlsbad, CA, USA
| | - Jiani Chai
- La Jolla Institute for Immunology, La Jolla, CA, USA
- Department of Pathology, Albert Einstein Medical College, New York, NY, USA
| | | | - Tilman Sanchez-Elsner
- Department of Gastroenterology, University Hospital Southampton NHS FT, Southampton, UK
| | - Fraser Cummings
- School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
- Department of Gastroenterology, University Hospital Southampton NHS FT, Southampton, UK
| | - Mitchell Kronenberg
- La Jolla Institute for Immunology, La Jolla, CA, USA.
- Department of Molecular Biology, University of California, San Diego, San Diego, CA, USA.
| | - Pandurangan Vijayanand
- La Jolla Institute for Immunology, La Jolla, CA, USA.
- Department of Medicine, University of California, San Diego, San Diego, CA, USA.
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK.
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4
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Amchova P, Siska F, Ruda-Kucerova J. Food Safety and Health Concerns of Synthetic Food Colors: An Update. TOXICS 2024; 12:466. [PMID: 39058118 PMCID: PMC11280921 DOI: 10.3390/toxics12070466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/09/2024] [Accepted: 06/10/2024] [Indexed: 07/28/2024]
Abstract
The toxicity of food additives is widely studied and concerns many consumers worldwide. Synthetic food colors are often considered an unnecessary risk to consumer health. Since the European Food Safety Authority's (EFSA) re-evaluation between 2009 and 2014, the body of scientific literature on food colors has grown, and new evaluations are being published by the Joint FAO/WHO Expert Committee on Food Additives (JECFA). Therefore, this narrative review aims to review the toxicological data that have become available since 2014. The reviewed colors are Quinoline Yellow, Sunset Yellow, Azorubine, Amaranth, Ponceau 4R, Erythrosine, Allura Red, Patent Blue, Indigo Carmine, Brilliant Blue FCF, Green S, Brilliant Black, Brown HT, and Lithol Rubine BK. Tartrazine was not included in this paper; the overwhelming amount of recent data on Tartrazine toxicity requires more space than this review can provide. The issues regarding the toxicity of synthetic food colors and real population exposures are being regularly examined and reviewed by relevant authorities, such as the EFSA and JECFA. The current ADI limits set by the authorities are mostly in agreement, and they seem safe. However, the EFSA and JECFA assessments of some of the colors are more than a decade old, and new evidence will soon be required.
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Affiliation(s)
- Petra Amchova
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic; (P.A.); (F.S.)
| | - Filip Siska
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic; (P.A.); (F.S.)
- Oncology Department, Hospital of Ceske Budejovice, B. Nemcove 585/54, 370 01 Ceske Budejovice, Czech Republic
| | - Jana Ruda-Kucerova
- Department of Pharmacology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic; (P.A.); (F.S.)
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5
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Nguyen OTP, Misun PM, Hierlemann A, Lohasz C. A Versatile Intestine-on-Chip System for Deciphering the Immunopathogenesis of Inflammatory Bowel Disease. Adv Healthc Mater 2024; 13:e2302454. [PMID: 38253407 DOI: 10.1002/adhm.202302454] [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: 07/30/2023] [Revised: 12/21/2023] [Indexed: 01/24/2024]
Abstract
The multifactorial nature of inflammatory bowel disease (IBD) necessitates reliable and practical experimental models to elucidate its etiology and pathogenesis. To model the intestinal microenvironment at the onset of IBD in vitro, it is important to incorporate relevant cellular and noncellular components before inducing stepwise pathogenic developments. A novel intestine-on-chip system for investigating multiple aspects of IBD's immunopathogenesis is presented. The system includes an array of tight and polarized barrier models formed from intestinal epithelial cells on an in-vivo-like subepithelial matrix within one week. The dynamic remodeling of the subepithelial matrix by cells or their secretome demonstrates the physiological relevance of the on-chip barrier models. The system design enables introduction of various immune cell types and inflammatory stimuli at specific locations in the same barrier model, which facilitates investigations of the distinct roles of each cell type in intestinal inflammation development. It is showed that inflammatory behavior manifests in an upregulated expression of inflammatory markers and cytokines (TNF-α). The neutralizing effect of the anti-inflammatory antibody Infliximab on levels of TNF-α and its inducible cytokines could be explicitly shown. Overall, an innovative approach to systematically developing a microphysiological system to comprehend immune-system-mediated disorders of IBD and to identify new therapeutic strategies is presented.
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Affiliation(s)
- Oanh T P Nguyen
- Bio Engineering Laboratory, Department of Biosystems Science and Engineering, ETH Zurich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
| | - Patrick M Misun
- Bio Engineering Laboratory, Department of Biosystems Science and Engineering, ETH Zurich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
| | - Andreas Hierlemann
- Bio Engineering Laboratory, Department of Biosystems Science and Engineering, ETH Zurich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
| | - Christian Lohasz
- Bio Engineering Laboratory, Department of Biosystems Science and Engineering, ETH Zurich, Klingelbergstrasse 48, Basel, CH-4056, Switzerland
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6
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Karmele EP, Moldoveanu AL, Kaymak I, Jugder BE, Ursin RL, Bednar KJ, Corridoni D, Ort T. Single cell RNA-sequencing profiling to improve the translation between human IBD and in vivo models. Front Immunol 2023; 14:1291990. [PMID: 38179052 PMCID: PMC10766350 DOI: 10.3389/fimmu.2023.1291990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 11/29/2023] [Indexed: 01/06/2024] Open
Abstract
Inflammatory bowel disease (IBD) is an umbrella term for two conditions (Crohn's Disease and Ulcerative Colitis) that is characterized by chronic inflammation of the gastrointestinal tract. The use of pre-clinical animal models has been invaluable for the understanding of potential disease mechanisms. However, despite promising results of numerous therapeutics in mouse colitis models, many of these therapies did not show clinical benefits in patients with IBD. Single cell RNA-sequencing (scRNA-seq) has recently revolutionized our understanding of complex interactions between the immune system, stromal cells, and epithelial cells by mapping novel cell subpopulations and their remodeling during disease. This technology has not been widely applied to pre-clinical models of IBD. ScRNA-seq profiling of murine models may provide an opportunity to increase the translatability into the clinic, and to choose the most appropriate model to test hypotheses and novel therapeutics. In this review, we have summarized some of the key findings at the single cell transcriptomic level in IBD, how specific signatures have been functionally validated in vivo, and highlighted the similarities and differences between scRNA-seq findings in human IBD and experimental mouse models. In each section of this review, we highlight the importance of utilizing this technology to find the most suitable or translational models of IBD based on the cellular therapeutic target.
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Affiliation(s)
- Erik P. Karmele
- Bioscience Immunology, Research and Early Development, Respiratory and Immunology, Biopharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, United States
| | - Ana Laura Moldoveanu
- Bioscience Immunology, Research and Early Development, Respiratory and Immunology, Biopharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
| | - Irem Kaymak
- Bioscience Immunology, Research and Early Development, Respiratory and Immunology, Biopharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
| | - Bat-Erdene Jugder
- Bioscience Immunology, Research and Early Development, Respiratory and Immunology, Biopharmaceuticals R&D, AstraZeneca, Waltham, MA, United States
| | - Rebecca L. Ursin
- Bioscience Immunology, Research and Early Development, Respiratory and Immunology, Biopharmaceuticals R&D, AstraZeneca, Waltham, MA, United States
| | - Kyle J. Bednar
- Bioscience Immunology, Research and Early Development, Respiratory and Immunology, Biopharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, United States
| | - Daniele Corridoni
- Bioscience Immunology, Research and Early Development, Respiratory and Immunology, Biopharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
| | - Tatiana Ort
- Bioscience Immunology, Research and Early Development, Respiratory and Immunology, Biopharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, United States
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7
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Di Petrillo A, Kumar A, Onali S, Favale A, Fantini MC. GPR120/FFAR4: A Potential New Therapeutic Target for Inflammatory Bowel Disease. Inflamm Bowel Dis 2023; 29:1981-1989. [PMID: 37542525 DOI: 10.1093/ibd/izad161] [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: 03/26/2023] [Indexed: 08/07/2023]
Abstract
Inflammatory bowel disease, whose major forms are Crohn's disease and ulcerative colitis, is characterized by chronic inflammation of the gut due to the loss of tolerance toward antigens normally contained in the gut lumen. G protein-coupled receptor (GPR) 120 has gained considerable attention as a potential therapeutic target for metabolic disorders due to its implication in the production of the incretin hormone glucagon-like peptide 1 and the secretion of cholecystokinin. Recent studies have also highlighted the role of GPR120 in regulating immune system activity and inflammation. GPR120, expressed by intestinal epithelial cells, proinflammatory macrophages, enteroendocrine L cells, and CD4+ T cells, suppresses proinflammatory and enhances anti-inflammatory cytokine production, suggesting that GPR120 might have a pivotal role in intestinal inflammation and represent a possible therapeutic target in inflammatory bowel disease. This narrative review aims at summarizing the role of GPR120 in the maintenance of intestinal homeostasis through the analysis of the most recent studies.
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Affiliation(s)
- Amalia Di Petrillo
- Department of Medical Sciences and Public Health, University of Cagliari, Monserrato, Italy
| | - Amit Kumar
- Department of Electrical and Electronic Engineering, University of Cagliari, Cagliari, Italy
| | - Sara Onali
- Department of Medical Sciences and Public Health, University of Cagliari, Monserrato, Italy
| | - Agnese Favale
- Department of Medical Sciences and Public Health, University of Cagliari, Monserrato, Italy
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8
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Zhang Q, Chumanevich AA, Nguyen I, Chumanevich AA, Sartawi N, Hogan J, Khazan M, Harris Q, Massey B, Chatzistamou I, Buckhaults PJ, Banister CE, Wirth M, Hebert JR, Murphy EA, Hofseth LJ. The synthetic food dye, Red 40, causes DNA damage, causes colonic inflammation, and impacts the microbiome in mice. Toxicol Rep 2023; 11:221-232. [PMID: 37719200 PMCID: PMC10502305 DOI: 10.1016/j.toxrep.2023.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 08/21/2023] [Accepted: 08/31/2023] [Indexed: 09/19/2023] Open
Abstract
The incidence of colorectal cancer (CRC) among young people has been on the rise for the past four decades and its underlying causes are only just starting to be uncovered. Recent studies suggest that consuming ultra-processed foods and pro-inflammatory diets may be contributing factors. The increase in the use of synthetic food colors in such foods over the past 40 years, including the common synthetic food dye Allura Red AC (Red 40), coincides with the rise of early-onset colorectal cancer (EOCRC). As these ultra-processed foods are particularly appealing to children, there is a growing concern about the impact of synthetic food dyes on the development of CRC. Our study aimed to investigate the effects of Red 40 on DNA damage, the microbiome, and colonic inflammation. Despite a lack of prior research, high levels of human exposure to pro-inflammatory foods containing Red 40 highlight the urgency of exploring this issue. Our results show that Red 40 damages DNA both in vitro and in vivo and that consumption of Red 40 in the presence of a high-fat diet for 10 months leads to dysbiosis and low-grade colonic inflammation in mice. This evidence supports the hypothesis that Red 40 is a dangerous compound that dysregulates key players involved in the development of EOCRC.
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Affiliation(s)
- Qi Zhang
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Alexander A. Chumanevich
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Ivy Nguyen
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Anastasiya A. Chumanevich
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Nora Sartawi
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Jake Hogan
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Minou Khazan
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Quinn Harris
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Bryson Massey
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Ioulia Chatzistamou
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, USA
| | - Phillip J. Buckhaults
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Carolyn E. Banister
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
| | - Michael Wirth
- Department of Biobehavioral Health & Nursing Science, College of Nursing, University of South Carolina, Columbia, SC 29208, USA
| | - James R. Hebert
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - E. Angela Murphy
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, USA
| | - Lorne J. Hofseth
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208, USA
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9
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Russo S, Chan K, Li L, Parise L, Cathomas F, LeClair K, Shimo Y, Lin HY, Durand-de Cuttoli R, Aubry A, Alvarez J, Drescher T, Osman A, Yuan C, Fisher-Foye R, Price G, Schmitt Y, Kaster M, Furtado GC, Lira S, Wang J, Han W, de Araujo I. Stress-activated brain-gut circuits disrupt intestinal barrier integrity and social behaviour. RESEARCH SQUARE 2023:rs.3.rs-3459170. [PMID: 37961128 PMCID: PMC10635315 DOI: 10.21203/rs.3.rs-3459170/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Chronic stress underlies the etiology of both major depressive disorder (MDD) and irritable bowel syndrome (IBS), two highly prevalent and debilitating conditions with high rates of co-morbidity. However, it is not fully understood how the brain and gut bi-directionally communicate during stress to impact intestinal homeostasis and stress-relevant behaviours. Using the chronic social defeat stress (CSDS) model, we find that stressed mice display greater intestinal permeability and circulating levels of the endotoxin lipopolysaccharide (LPS) compared to unstressed control (CON) mice. Interestingly, the microbiota in the colon also exhibit elevated LPS biosynthesis gene expression following CSDS. Additionally, CSDS triggers an increase in pro-inflammatory colonic IFNγ+ Th1 cells and a decrease in IL4+ Th2 cells compared to CON mice, and this gut inflammation contributes to stress-induced intestinal barrier permeability and social avoidance behaviour. We next investigated the role of enteric neurons and identified that noradrenergic dopamine beta-hydroxylase (DBH)+ neurons in the colon are activated by CSDS, and that their ablation protects against gut pathophysiology and disturbances in social behaviour. Retrograde tracing from the colon identified a population of corticotropin-releasing hormone-expressing (CRH+) neurons in the paraventricular nucleus of the hypothalamus (PVH) that innervate the colon and are activated by stress. Chemogenetically activating these PVH CRH+ neurons is sufficient to induce gut inflammation, barrier permeability, and social avoidance behaviour, while inhibiting these cells prevents these effects following exposure to CSDS. Thus, we define a stress-activated brain-to-gut circuit that confers colonic inflammation, leading to impaired intestinal barrier function, and consequent behavioural deficits.
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Affiliation(s)
| | | | - Long Li
- Icahn School of Medicine at Mount Sinai
| | | | | | | | | | | | | | | | | | | | - Aya Osman
- Icahn School of Medicine at Mount Sinai
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10
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Fan Q, Li M, Zhao W, Zhang K, Li M, Li W. Hyper α2,6-Sialylation Promotes CD4 + T-Cell Activation and Induces the Occurrence of Ulcerative Colitis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302607. [PMID: 37424034 PMCID: PMC10502867 DOI: 10.1002/advs.202302607] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/23/2023] [Indexed: 07/11/2023]
Abstract
α2,6-sialylation, catalyzed by α2,6-sialyltransferase (ST6GAL1), plays a pivotal role in immune responses. However, the role of ST6GAL1 in the pathogenesis of ulcerative colitis (UC) remains unknown. ST6GAL1 mRNA is highly expressed in UC tissues compared with the corresponding adjacent normal tissues, and α2,6-sialylation is significantly increased in the colon tissues of patients with UC. The expression of ST6GAL1 and proinflammatory cytokines, such as interleukin (IL)-2, IL-6, IL-17, and interferon-gamma, is also increased. The number of CD4+ T cells increases in UC patients. St6gal1 gene knockout (St6gal1-/- ) rats are established by clustered regularly interspaced short palindromic repeats (CRISPR)-associated gene knockout system. St6gal1 deficiency reduces the levels of pro-inflammatory cytokines and alleviates colitis symptoms in UC model rats. Ablation of α2,6-sialylation inhibits the transport of the TCR to lipid rafts and suppresses CD4+ T-cell activation. The attenuation of TCR signaling downregulates the expression of NF-κB in ST6GAL1-/- CD4+ T-cells. Moreover, NF-κB could bind to the ST6GAL1 promoter to increase its transcription. Ablation of ST6GAL1 downregulates the expression of NF-κB and reduces the production of proinflammatory cytokines to relieve UC pathogenesis, which is a potential novel target for the clinical treatment of UC.
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Affiliation(s)
- Qingjie Fan
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular ImmunopathologyShantou University Medical CollegeShantouGuangdong515041China
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Mechou Li
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Weiwei Zhao
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Kaixin Zhang
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Ming Li
- College of Basic Medical ScienceDalian Medical University9‐Western Section, Lvshun South RoadDalianLiaoning116044China
| | - Wenzhe Li
- Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular ImmunopathologyShantou University Medical CollegeShantouGuangdong515041China
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11
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Venkatesh H, Tracy SI, Farrar MA. Cytotoxic CD4 T cells in the mucosa and in cancer. Front Immunol 2023; 14:1233261. [PMID: 37654482 PMCID: PMC10466411 DOI: 10.3389/fimmu.2023.1233261] [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: 06/01/2023] [Accepted: 07/24/2023] [Indexed: 09/02/2023] Open
Abstract
CD4 T cells were initially described as helper cells that promote either the cellular immune response (Th1 cells) or the humoral immune response (Th2 cells). Since then, a plethora of functionally distinct helper and regulatory CD4 T cell subsets have been described. CD4 T cells with cytotoxic function were first described in the setting of viral infections and autoimmunity, and more recently in cancer and gut dysbiosis. Regulatory CD4 T cell subsets such as Tregs and T-regulatory type 1 (Tr1) cells have also been shown to have cytotoxic potential. Indeed, Tr1 cells have been shown to be important for maintenance of stem cell niches in the bone marrow and the gut. This review will provide an overview of cytotoxic CD4 T cell development, and discuss the role of inflammatory and Tr1-like cytotoxic CD4 T cells in maintenance of intestinal stem cells and in anti-cancer immune responses.
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Affiliation(s)
- Hrishi Venkatesh
- Center for Immunology, Masonic Cancer Center, Minneapolis, MN, United States
- University of Minnesota, Department of Laboratory Medicine and Pathology, Minneapolis, MN, United States
| | - Sean I. Tracy
- Center for Immunology, Masonic Cancer Center, Minneapolis, MN, United States
- Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota, Minneapolis, MN, United States
| | - Michael A. Farrar
- Center for Immunology, Masonic Cancer Center, Minneapolis, MN, United States
- University of Minnesota, Department of Laboratory Medicine and Pathology, Minneapolis, MN, United States
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12
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Kokkinou E, Soini T, Pandey RV, van Acker A, Theorell J, Czarnewski P, Kvedaraite E, Vandamme N, Lourda M, Sorini C, Weigel W, Carrasco A, Tibbitt CA, Schlums H, Lindforss U, Nordenvall C, Ljunggren M, Ideström M, Svensson M, Henter JI, Villablanca EJ, Bryceson YT, Rolandsdotter H, Mjösberg J. The single-cell transcriptional landscape of innate and adaptive lymphocytes in pediatric-onset colitis. Cell Rep Med 2023; 4:101038. [PMID: 37160121 DOI: 10.1016/j.xcrm.2023.101038] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 12/15/2022] [Accepted: 04/14/2023] [Indexed: 05/11/2023]
Abstract
Innate lymphoid cells (ILCs) are considered innate counterparts of adaptive T cells; however, their common and unique transcriptional signatures in pediatric inflammatory bowel disease (pIBD) are largely unknown. Here, we report a dysregulated colonic ILC composition in pIBD colitis that correlates with inflammatory activity, including accumulation of naive-like CD45RA+CD62L- ILCs. Weighted gene co-expression network analysis (WGCNA) reveals modules of genes that are shared or unique across innate and adaptive lymphocytes. Shared modules include genes associated with activation/tissue residency, naivety/quiescence, and antigen presentation. Lastly, nearest-neighbor-based analysis facilitates the identification of "most inflamed" and "least inflamed" lymphocytes in pIBD colon with unique transcriptional signatures. Our study reveals shared and unique transcriptional signatures of colonic ILCs and T cells in pIBD. We also provide insight into the transcriptional regulation of colonic inflammation, deepening our understanding of the potential mechanisms involved in pIBD.
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Affiliation(s)
- Efthymia Kokkinou
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Tea Soini
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Ram Vinay Pandey
- Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Aline van Acker
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Jakob Theorell
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden; Psychiatry Southwest, Health Care Services Stockholm County, Huddinge, Sweden
| | - Paulo Czarnewski
- Science for Life Laboratory, Department of Biochemistry and Biophysics, National Bioinformatics Infrastructure Sweden, Stockholm University, Solna, Sweden
| | - Egle Kvedaraite
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden; Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; Department of Clinical Pathology and Cancer Diagnostics, Karolinska University Hospital, Stockholm, Sweden
| | - Niels Vandamme
- Data Mining and Modeling for Biomedicine, VIB Center for Inflammation Research, Ghent, Belgium; Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
| | - Magda Lourda
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden; Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Chiara Sorini
- Immunology and Allergy Unit, Department of Medicine, Solna, Karolinska Institutet and University Hospital, Stockholm, Sweden
| | - Whitney Weigel
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Anna Carrasco
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Christopher Andrew Tibbitt
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Heinrich Schlums
- Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Ulrik Lindforss
- Department of Molecular Medicine and Surgery, Karolinska Institutet and Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Caroline Nordenvall
- Department of Molecular Medicine and Surgery, Karolinska Institutet and Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Malin Ljunggren
- Department of Molecular Medicine and Surgery, Karolinska Institutet and Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Maja Ideström
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; Pediatric Gastroenterology, Hepatology and Nutrition Unit, Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Mattias Svensson
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Jan-Inge Henter
- Childhood Cancer Research Unit, Department of Women's and Children's Health, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden; Theme of Children's Health, Karolinska University Hospital, Stockholm, Sweden
| | - Eduardo J Villablanca
- Immunology and Allergy Unit, Department of Medicine, Solna, Karolinska Institutet and University Hospital, Stockholm, Sweden
| | - Yenan T Bryceson
- Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Helena Rolandsdotter
- Department of Gastroenterology, Sachs' Children and Youth Hospital, Stockholm, Sweden; Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Jenny Mjösberg
- Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, Stockholm, Sweden.
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13
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Shanmuganad S, Ferguson A, Paranjpe A, Cianciolo EE, Katz JD, Herold MJ, Hildeman DA. Subset-specific and temporal control of effector and memory CD4+ T cell survival. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.01.530323. [PMID: 36909576 PMCID: PMC10002744 DOI: 10.1101/2023.03.01.530323] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Following their proliferative expansion and differentiation into effector cells like Th1, Tfh, and T central memory precursors (Tcmp), most effector CD4+ T cells die, while some survive and become memory cells. Here, we explored how Bcl-2 family members controlled the survival of CD4+ T cells during distinct phases of mouse acute LCMV infection. During expansion, we found that Th1 cells dominated the response, downregulated expression of Bcl-2, and did not require Bcl-2 for survival. Instead, they relied on the anti-apoptotic protein, A1 for survival. Similarly, Th17 cells in an EAE model also depended on A1 for survival. However, after the peak of the response, CD4+ effector T cells required Bcl-2 to counteract Bim to aid their transition into memory. This Bcl-2 dependence persisted in established memory CD4+ T cells. Combined, these data show a temporal switch in Bcl-2 family-mediated survival of CD4+ T cells over the course of an immune response. This knowledge can help improve T cell survival to boost immunity and conversely, target pathogenic T cells.
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14
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Tourkochristou E, Mouzaki A, Triantos C. Unveiling the biological role of sphingosine-1-phosphate receptor modulators in inflammatory bowel diseases. World J Gastroenterol 2023; 29:110-125. [PMID: 36683721 PMCID: PMC9850947 DOI: 10.3748/wjg.v29.i1.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/16/2022] [Accepted: 12/14/2022] [Indexed: 01/04/2023] Open
Abstract
Inflammatory bowel disease (IBD) is chronic inflammation of the gastrointestinal tract that has a high epidemiological prevalence worldwide. The increasing disease burden worldwide, lack of response to current biologic therapeutics, and treatment-related immunogenicity have led to major concerns regarding the clinical management of IBD patients and treatment efficacy. Understanding disease pathogenesis and disease-related molecular mechanisms is the most important goal in developing new and effective therapeutics. Sphingosine-1-phosphate (S1P) receptor (S1PR) modulators form a class of oral small molecule drugs currently in clinical development for IBD have shown promising effects on disease improvement. S1P is a sphingosine-derived phospholipid that acts by binding to its receptor S1PR and is involved in the regulation of several biological processes including cell survival, differentiation, migration, proliferation, immune response, and lymphocyte trafficking. T lymphocytes play an important role in regulating inflammatory responses. In inflamed IBD tissue, an imbalance between T helper (Th) and regulatory T lymphocytes and Th cytokine levels was found. The S1P/S1PR signaling axis and metabolism have been linked to inflammatory responses in IBD. S1P modulators targeting S1PRs and S1P metabolism have been developed and shown to regulate inflammatory responses by affecting lymphocyte trafficking, lymphocyte number, lymphocyte activity, cytokine production, and contributing to gut barrier function.
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Affiliation(s)
- Evanthia Tourkochristou
- Division of Gastroenterology, Department of Internal Medicine, Medical School, University of Patras, Patras 26504, Greece
| | - Athanasia Mouzaki
- Division of Hematology, Department of Internal Medicine, Medical School, University of Patras, Patras 26504, Greece
| | - Christos Triantos
- Division of Gastroenterology, Department of Internal Medicine, Medical School, University of Patras, Patras 26504, Greece
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15
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Zhou X, Qiao K, Wu H, Zhang Y. The Impact of Food Additives on the Abundance and Composition of Gut Microbiota. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020631. [PMID: 36677689 PMCID: PMC9864936 DOI: 10.3390/molecules28020631] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/01/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023]
Abstract
The gut microbiota has been confirmed as an important part in human health, and is even take as an 'organ'. The interaction between the gut microbiota and host intestinal environment plays a key role in digestion, metabolism, immunity, inflammation, and diseases. The dietary component is a major factor that affects the composition and function of gut microbiota. Food additives have been widely used to improve the color, taste, aroma, texture, and nutritional quality of processed food. The increasing variety and quantity of processed food in diets lead to increased frequency and dose of food additives exposure, especially artificial food additives, which has become a concern of consumers. There are studies focusing on the impact of food additives on the gut microbiota, as long-term exposure to food additives could induce changes in the microbes, and the gut microbiota is related to human health and disease. Therefore, the aim of this review is to summarize the interaction between the gut microbiota and food additives.
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Affiliation(s)
- Xuewei Zhou
- Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Kaina Qiao
- Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Huimin Wu
- Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Yuyu Zhang
- Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
- Correspondence:
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16
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Kwon YH, Banskota S, Wang H, Rossi L, Grondin JA, Syed SA, Yousefi Y, Schertzer JD, Morrison KM, Wade MG, Holloway AC, Surette MG, Steinberg GR, Khan WI. Chronic exposure to synthetic food colorant Allura Red AC promotes susceptibility to experimental colitis via intestinal serotonin in mice. Nat Commun 2022; 13:7617. [PMID: 36539404 PMCID: PMC9768151 DOI: 10.1038/s41467-022-35309-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 11/24/2022] [Indexed: 12/24/2022] Open
Abstract
Chemicals in food are widely used leading to significant human exposure. Allura Red AC (AR) is a highly common synthetic colorant; however, little is known about its impact on colitis. Here, we show chronic exposure of AR at a dose found in commonly consumed dietary products exacerbates experimental models of colitis in mice. While intermittent exposure is more akin to a typical human exposure, intermittent exposure to AR in mice for 12 weeks, does not influence susceptibility to colitis. However, exposure to AR during early life primes mice to heightened susceptibility to colitis. In addition, chronic exposure to AR induces mild colitis, which is associated with elevated colonic serotonin (5-hydroxytryptamine; 5-HT) levels and impairment of the epithelial barrier function via myosin light chain kinase (MLCK). Importantly, chronic exposure to AR does not influence colitis susceptibility in mice lacking tryptophan hydroxylase 1 (TPH1), the rate limiting enzyme for 5-HT biosynthesis. Cecal transfer of the perturbed gut microbiota by AR exposure worsens colitis severity in the recipient germ-free (GF) mice. Furthermore, chronic AR exposure elevates colonic 5-HT levels in naïve GF mice. Though it remains unknown whether AR has similar effects in humans, our study reveals that chronic long-term exposure to a common synthetic colorant promotes experimental colitis via colonic 5-HT in gut microbiota-dependent and -independent pathway in mice.
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Affiliation(s)
- Yun Han Kwon
- grid.25073.330000 0004 1936 8227Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON Canada
| | - Suhrid Banskota
- grid.25073.330000 0004 1936 8227Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON Canada
| | - Huaqing Wang
- grid.25073.330000 0004 1936 8227Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON Canada
| | - Laura Rossi
- grid.25073.330000 0004 1936 8227Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada
| | - Jensine A. Grondin
- grid.25073.330000 0004 1936 8227Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON Canada
| | - Saad A. Syed
- grid.25073.330000 0004 1936 8227Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Medicine, McMaster University, Hamilton, ON Canada
| | - Yeganeh Yousefi
- grid.25073.330000 0004 1936 8227Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON Canada
| | - Jonathan D. Schertzer
- grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Center for Metabolism, Obesity, and Diabetes Research, McMaster University, Hamilton, ON Canada
| | - Katherine M. Morrison
- grid.25073.330000 0004 1936 8227Center for Metabolism, Obesity, and Diabetes Research, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Pediatrics, McMaster University, Hamilton, ON Canada
| | - Michael G. Wade
- grid.57544.370000 0001 2110 2143Environmental Health, Science and Research Bureau, Health Canada, Ottawa, ON Canada
| | - Alison C. Holloway
- grid.25073.330000 0004 1936 8227Center for Metabolism, Obesity, and Diabetes Research, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Obstetrics and Gynecology, McMaster University, Hamilton, ON Canada
| | - Michael G. Surette
- grid.25073.330000 0004 1936 8227Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Medicine, McMaster University, Hamilton, ON Canada
| | - Gregory R. Steinberg
- grid.25073.330000 0004 1936 8227Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Department of Medicine, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Center for Metabolism, Obesity, and Diabetes Research, McMaster University, Hamilton, ON Canada
| | - Waliul I. Khan
- grid.25073.330000 0004 1936 8227Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON Canada ,grid.25073.330000 0004 1936 8227Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON Canada
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17
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Aguilera-Lizarraga J. Gut reactions: emerging mechanisms of abdominal pain from food intake. Am J Physiol Gastrointest Liver Physiol 2022; 323:G401-G409. [PMID: 36126222 DOI: 10.1152/ajpgi.00173.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Abdominal pain, which is a form of visceral pain, is a highly prevalent symptom worldwide frequently occurring following food ingestion. Its pathophysiology is complex, and many factors, including intestinal environmental cues, the immune system, or the molecular composition of foods, can influence the development of postprandial abdominal pain. Because of the poor efficacy of drug treatments, current strategies are often limited to the exclusion of culprit food(s) from the diet. However, there are two important limitations to this approach. First, patients suffering from food-induced abdominal pain usually recognize several food items as the cause of their gastrointestinal symptoms. Second, not all offending foods can always be identified by these patients. Newly identified mechanisms involving neuroimmune interactions and their communication with the intestinal microbiota shed light on the development of new therapeutic strategies. In this Mini-Review, these novel mechanisms and relevance of such findings are highlighted.
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Affiliation(s)
- Javier Aguilera-Lizarraga
- Laboratory for Intestinal Neuroimmune Interactions, Translational Research Centre for Gastrointestinal Disorders, Department of Chronic Diseases, Metabolism and Ageing, KU Leuven, Leuven, Belgium
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18
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Spicer JA, Huttunen KM, Jose J, Dimitrov I, Akhlaghi H, Sutton VR, Voskoboinik I, Trapani J. Small Molecule Inhibitors of Lymphocyte Perforin as Focused Immunosuppressants for Infection and Autoimmunity. J Med Chem 2022; 65:14305-14325. [PMID: 36263926 DOI: 10.1021/acs.jmedchem.2c01338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
New drugs that precisely target the immune mechanisms critical for cytotoxic T lymphocyte (CTL) and natural killer (NK) cell driven pathologies are desperately needed. In this perspective, we explore the cytolytic protein perforin as a target for therapeutic intervention. Perforin plays an indispensable role in CTL/NK killing and controls a range of immune pathologies, while being encoded by a single copy gene with no redundancy of function. An immunosuppressant targeting this protein would provide the first-ever therapy focused specifically on one of the principal cell death pathways contributing to allotransplant rejection and underpinning multiple autoimmune and postinfectious diseases. No drugs that selectively block perforin-dependent cell death are currently in clinical use, so this perspective will review published novel small molecule inhibitors, concluding with in vivo proof-of-concept experiments performed in mouse models of perforin-mediated immune pathologies that provide a potential pathway toward a clinically useful therapeutic agent.
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Affiliation(s)
- Julie A Spicer
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, A New Zealand Centre for Research Excellence, Auckland 1142, New Zealand
| | - Kristiina M Huttunen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
| | - Jiney Jose
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, A New Zealand Centre for Research Excellence, Auckland 1142, New Zealand
| | - Ivo Dimitrov
- Auckland Cancer Society Research Centre, Faculty of Medical and Health Sciences, The University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, A New Zealand Centre for Research Excellence, Auckland 1142, New Zealand
| | - Hedieh Akhlaghi
- Cancer Immunology Program, Peter MacCallum Cancer Centre, 305 Grattan Street, Melbourne, Victoria 3000, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Vivien R Sutton
- Cancer Immunology Program, Peter MacCallum Cancer Centre, 305 Grattan Street, Melbourne, Victoria 3000, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Ilia Voskoboinik
- Cancer Immunology Program, Peter MacCallum Cancer Centre, 305 Grattan Street, Melbourne, Victoria 3000, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
| | - Joseph Trapani
- Cancer Immunology Program, Peter MacCallum Cancer Centre, 305 Grattan Street, Melbourne, Victoria 3000, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia
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19
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Efficacy of the Panax Notoginseng Ejiao Suppository in the Treatment of Patients with Ulcerative Proctitis and Its Effect on Inflammatory Response and Immune Function. DISEASE MARKERS 2022; 2022:1479964. [PMID: 36188425 PMCID: PMC9519316 DOI: 10.1155/2022/1479964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022]
Abstract
Objective. To investigate the efficacy of the Panax notoginseng Ejiao suppository in patients with ulcerative proctitis and its effect on inflammatory response and immune function. Methods. This study recruited 100 patients with ulcerative proctitis who were hospitalized to our hospital’s anorectal outpatient department between May 2015 and October 2020. They were randomly separated into either a control or a study group, with 50 cases in each. The control group received the mesalazine suppository, whereas the study group received the Panax notoginseng Ejiao suppository. Outcome measures included clinical effectiveness, inflammatory response, and immunological state of patients. Results. The total efficiency in the study group was significantly higher than that in the control group (
). The Mayo score and Baron endoscopic score between the two groups were significantly decreased after treatment, with lower results in the study group (
). The inflammatory variables were dramatically reduced following therapy, with the study group doing worse. Following treatment, the number of Th 17 cells declined dramatically in both groups, while the proportion of Treg cells increased significantly, with greater alterations of Th17 cells and Treg cells observed in the study group than those in the control group (
). The Panax notoginseng Ejiao suppository resulted in significantly shorter time lapses before symptom alleviation and a lower incidence of recurrence at 6 months after treatment versus mesalazine suppository (
). Conclusion. In patients with ulcerative proctitis, the Panax notoginseng Ejiao suppository significantly improves clinical efficacy, reduces the incidence of recurrence, mitigates inflammatory response, and improves immune function.
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20
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Hoeks C, Duran G, Hellings N, Broux B. When Helpers Go Above and Beyond: Development and Characterization of Cytotoxic CD4+ T Cells. Front Immunol 2022; 13:951900. [PMID: 35903098 PMCID: PMC9320319 DOI: 10.3389/fimmu.2022.951900] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 06/21/2022] [Indexed: 11/26/2022] Open
Abstract
Once regarded as an experimental artefact, cytotoxic CD4+ T cells (CD4 CTL) are presently recognized as a biologically relevant T cell subset with important functions in anti-viral, anti-tumor, and autoimmune responses. Despite the potentially large impact on their micro-environment, the absolute cell counts of CD4 CTL within the peripheral circulation are relatively low. With the rise of single cell analysis techniques, detection of these cells is greatly facilitated. This led to a renewed appraisal of CD4 CTL and an increased insight into their heterogeneous nature and ontogeny. In this review, we summarize the developmental path from naïve CD4+ T cells to terminally differentiated CD4 CTL, and present markers that can be used to detect or isolate CD4 CTL and their precursors. Subsets of CD4 CTL and their divergent functionalities are discussed. Finally, the importance of local cues as triggers for CD4 CTL differentiation is debated, posing the question whether CD4 CTL develop in the periphery and migrate to site of inflammation when called for, or that circulating CD4 CTL reflect cells that returned to the circulation following differentiation at the local inflammatory site they previously migrated to. Even though much remains to be learned about this intriguing T cell subset, it is clear that CD4 CTL represent interesting therapeutic targets for several pathologies.
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Affiliation(s)
- Cindy Hoeks
- Neuro Immune Connections & Repair Lab, Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Hasselt, Belgium
- University MS Center (UMSC), Hasselt, Belgium
| | - Gayel Duran
- Neuro Immune Connections & Repair Lab, Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Hasselt, Belgium
- University MS Center (UMSC), Hasselt, Belgium
| | - Niels Hellings
- Neuro Immune Connections & Repair Lab, Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Hasselt, Belgium
- University MS Center (UMSC), Hasselt, Belgium
| | - Bieke Broux
- Neuro Immune Connections & Repair Lab, Department of Immunology and Infection, Biomedical Research Institute, Hasselt University, Hasselt, Belgium
- University MS Center (UMSC), Hasselt, Belgium
- *Correspondence: Bieke Broux,
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21
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The disruption of intestinal homeostasis when foods are colored red. Cell Mol Immunol 2022; 19:855-857. [DOI: 10.1038/s41423-022-00875-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 04/22/2022] [Indexed: 11/08/2022] Open
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