1
|
Ou L, Ye B, Sun M, Qi N, Li J, Lv M, Lin X, Cai H, Hu J, Song Y, Chen X, Zhu Y, Yin L, Zhang J, Liao S, Zhang H. Mechanisms of intestinal epithelial cell damage by Clostridiumperfringens. Anaerobe 2024; 87:102856. [PMID: 38609034 DOI: 10.1016/j.anaerobe.2024.102856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/31/2024] [Accepted: 04/09/2024] [Indexed: 04/14/2024]
Abstract
Clostridium perfringens, a Gram-positive bacterium, causes intestinal diseases in humans and livestock through its toxins, related to alpha toxin (CPA), beta toxin (CPB), C. perfringens enterotoxin (CPE), epsilon toxin (ETX), Iota toxin (ITX), and necrotic enteritis B-like toxin (NetB). These toxins disrupt intestinal barrier, leading to various cell death mechanisms such as necrosis, apoptosis, and necroptosis. Additionally, non-toxin factors like adhesins and degradative enzymes contribute to virulence by enhancing colonization and survival of C. perfringens. A vicious cycle of intestinal barrier breach, misregulated cell death, and subsequent inflammation is at the heart of chronic inflammatory and infectious gastrointestinal diseases. Understanding these mechanisms is essential for developing targeted therapies against C. perfringens-associated intestinal diseases.
Collapse
Affiliation(s)
- Lanxin Ou
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China; College of Life Science and Engineering, Foshan University, Foshan, 528225, China
| | - Bijin Ye
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China; College of Life Science and Engineering, Foshan University, Foshan, 528225, China
| | - Mingfei Sun
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Nanshan Qi
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Juan Li
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Minna Lv
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Xuhui Lin
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Haiming Cai
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Junjing Hu
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Yongle Song
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Xiangjie Chen
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Yibin Zhu
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Lijun Yin
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Jianfei Zhang
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Shenquan Liao
- Key Laboratory of Livestock Disease Prevention of Guangdong Province, Key Laboratory of Avian Influenza and Other Major Poultry Diseases Prevention and Control, Ministry of Agriculture and Rural Affairs, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China.
| | - Haoji Zhang
- College of Life Science and Engineering, Foshan University, Foshan, 528225, China.
| |
Collapse
|
2
|
Raya Tonetti F, Eguileor A, Mrdjen M, Pathak V, Travers J, Nagy LE, Llorente C. Gut-liver axis: Recent concepts in pathophysiology in alcohol-associated liver disease. Hepatology 2024:01515467-990000000-00873. [PMID: 38691396 DOI: 10.1097/hep.0000000000000924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 04/20/2024] [Indexed: 05/03/2024]
Abstract
The growing recognition of the role of the gut microbiome's impact on alcohol-associated diseases, especially in alcohol-associated liver disease, emphasizes the need to understand molecular mechanisms involved in governing organ-organ communication to identify novel avenues to combat alcohol-associated diseases. The gut-liver axis refers to the bidirectional communication and interaction between the gut and the liver. Intestinal microbiota plays a pivotal role in maintaining homeostasis within the gut-liver axis, and this axis plays a significant role in alcohol-associated liver disease. The intricate communication between intestine and liver involves communication between multiple cellular components in each organ that enable them to carry out their physiological functions. In this review, we focus on novel approaches to understanding how chronic alcohol exposure impacts the microbiome and individual cells within the liver and intestine, as well as the impact of ethanol on the molecular machinery required for intraorgan and interorgan communication.
Collapse
Affiliation(s)
- Fernanda Raya Tonetti
- Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Alvaro Eguileor
- Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Marko Mrdjen
- Department of Molecular Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, Ohio, USA
| | - Vai Pathak
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio, USA
| | - Jared Travers
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, Ohio, USA
- Department of Gastroenterology and Hepatology, University Hospital, Cleveland, Ohio, USA
| | - Laura E Nagy
- Department of Molecular Medicine, Case Western Reserve University, Cleveland, Ohio, USA
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, Ohio, USA
- Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, Ohio, USA
| | - Cristina Llorente
- Department of Medicine, University of California San Diego, La Jolla, California, USA
| |
Collapse
|
3
|
Belaid M, Javorovic J, Pastorin G, Vllasaliu D. Development of an in vitro co-culture model using Caco-2 and J774A.1 cells to mimic intestinal inflammation. Eur J Pharm Biopharm 2024; 197:114243. [PMID: 38432601 DOI: 10.1016/j.ejpb.2024.114243] [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: 01/24/2024] [Revised: 02/27/2024] [Accepted: 03/01/2024] [Indexed: 03/05/2024]
Abstract
In vitro models that mimic the pathophysiology in vivo are important tools to study mechanisms of disease and assess the pharmacology and toxicity of drugs. In this work, we report the development of a novel model of intestinal inflammation. This model is based on the co-culture of intestinal epithelial Caco-2 cells and murine J774A.1 macrophages. The model is shown to mimic the intestinal barrier in both healthy and inflamed state. In the healthy state, without external stimulation, Caco-2 and J774A.1 cells were co-cultured in one system without affecting the barrier integrity of intestinal epithelial cells and without inducing release of cytokines from macrophages. To mimic the inflamed intestine, Caco-2 cells were primed with an optimised cytokine cocktail (TNF-⍺, IFN-γ and IL-1β) and J774A.1 cells were pre-exposed to lipopolysaccharide (LPS) and IFN-γ for 24 h before combining the two cell lines into co-culture. In these conditions, a significant disruption of the epithelial barrier and an increase in pro-inflammatory cytokine (TNF-⍺ and IL-6) levels released from macrophages were detected. The data also show that inflammation in the co-culture model was temporary and reversible upon the removal of the inflammatory stimulus. This new in vitro model could be a valuable tool for investigating the safety and efficacy of drugs in the context of intestinal inflammation and provides advantages over other reported co-culture models of intestinal inflammation in terms of cost and simplicity.
Collapse
Affiliation(s)
- Mona Belaid
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, King's College London, London SE1 9NH, United Kingdom; Department of Pharmacy and Pharmaceutical Sciences, National University of Singapore, Singapore 117543, Singapore
| | - Jana Javorovic
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, King's College London, London SE1 9NH, United Kingdom
| | - Giorgia Pastorin
- Department of Pharmacy and Pharmaceutical Sciences, National University of Singapore, Singapore 117543, Singapore
| | - Driton Vllasaliu
- Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, King's College London, London SE1 9NH, United Kingdom.
| |
Collapse
|
4
|
Eich C, Vogt JF, Längst V, Clausen BE, Hövelmeyer N. Isolation and high-dimensional flow cytometric analysis of tumor-infiltrating leukocytes in a mouse model of colorectal cancer. Front Immunol 2024; 15:1295863. [PMID: 38500875 PMCID: PMC10944955 DOI: 10.3389/fimmu.2024.1295863] [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: 09/17/2023] [Accepted: 02/09/2024] [Indexed: 03/20/2024] Open
Abstract
Colorectal cancer (CRC) is a complex and heterogeneous disease characterized by dysregulated interactions between tumor cells and the immune system. The tumor microenvironment plays a pivotal role in cancer initiation as well as progression, with myeloid immune cells such as dendritic cell and macrophage subsets playing diverse roles in cancer immunity. On one hand, they exert anti-tumor effects, but they can also contribute to tumor growth. The AOM/DSS colitis-associated cancer mouse model has emerged as a valuable tool to investigate inflammation-driven CRC. To understand the role of different leukocyte populations in tumor development, the preparation of single cell suspensions from tumors has become standard procedure for many types of cancer in recent years. However, in the case of AOM/DSS-induced colorectal tumors, this is still challenging and rarely described. For one, to be able to properly distinguish tumor-associated immune cells, separate processing of cancerous and surrounding colon tissue is essential. In addition, cell yield, due to the low tumor mass, viability, as well as preservation of cell surface epitopes are important for successful flow cytometric profiling of tumor-infiltrating leukocytes. Here we present a fast, simple, and economical step-by-step protocol for isolating colorectal tumor-associated leukocytes from AOM/DSS-treated mice. Furthermore, we demonstrate the feasibility of this protocol for high-dimensional flow cytometric identification of the different tumor-infiltrating leukocyte populations, with a specific focus on myeloid cell subsets.
Collapse
Affiliation(s)
- Christina Eich
- Institute for Molecular Medicine, Paul Klein Center for Immune Intervention, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Johannes F. Vogt
- Institute for Molecular Medicine, Paul Klein Center for Immune Intervention, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Vivian Längst
- Institute for Molecular Medicine, Paul Klein Center for Immune Intervention, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Björn E. Clausen
- Institute for Molecular Medicine, Paul Klein Center for Immune Intervention, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Nadine Hövelmeyer
- Institute for Molecular Medicine, Paul Klein Center for Immune Intervention, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| |
Collapse
|
5
|
Boll EJ, Winther KD, Knudsen TTM, Copani G, Cappellozza BI. Ligilactobacillus animalis 506 Protects the Intestinal Barrier from the Damaging Effects of Enteric Pathogens and Deoxynivalenol. Animals (Basel) 2024; 14:269. [PMID: 38254438 PMCID: PMC10812616 DOI: 10.3390/ani14020269] [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: 11/21/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
This study investigated the impact of L. animalis 506 on gut barrier integrity and regulation of inflammation in vitro using intestinal epithelial cell lines. Caco-2 or HT29 cell monolayers were challenged with enterotoxigenic E. coli (ETEC) or a ruminant isolate of Salmonella Heidelberg in the presence or absence of one of six probiotic Lactobacillus spp. strains. Among these, L. animalis 506 excelled at exerting protective effects by significantly mitigating the decreased transepithelial electrical resistance (TEER) as assessed using area under the curve (AUC) (p < 0.0001) and increased apical-to-basolateral fluorescein isothiocyanate (FITC) dextran translocation (p < 0.0001) across Caco-2 cell monolayers caused by S. Heidelberg or ETEC, respectively. Similarly, L. animalis 506 and other probiotic strains significantly attenuated the S. Heidelberg- and ETEC-induced increase in IL-8 from HT29 cells (p < 0.0001). Moreover, L. animalis 506 significantly counteracted the TEER decrease (p < 0.0001) and FITC dextran translocation (p < 0.0001) upon challenge with Clostridium perfringens. Finally, L. animalis 506 significantly attenuated DON-induced TEER decrease (p < 0.01) and FITC dextran translocation (p < 0.05) and mitigated occludin and zona occludens (ZO)-1 redistribution in Caco-2 cells caused by the mycotoxin. Collectively, these results demonstrate the ability of L. animalis 506 to confer protective effects on the intestinal epithelium in vitro upon challenge with enteric pathogens and DON known to be of particular concern in farm animals.
Collapse
Affiliation(s)
- Erik Juncker Boll
- Chr. Hansen, Animal and Plant Health & Nutrition, Boege Allé 10-12, 2970 Hoersholm, Denmark (G.C.); (B.I.C.)
| | | | | | | | | |
Collapse
|
6
|
Sun W, Lv J, Guo S, Lv M. Cellular microenvironment: a key for tuning mesenchymal stem cell senescence. Front Cell Dev Biol 2023; 11:1323678. [PMID: 38111850 PMCID: PMC10725964 DOI: 10.3389/fcell.2023.1323678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 11/17/2023] [Indexed: 12/20/2023] Open
Abstract
Mesenchymal stem cells (MSCs) possess the ability to self-renew and differentiate into multiple cell types, making them highly suitable for use as seed cells in tissue engineering. These can be derived from various sources and have been found to play crucial roles in several physiological processes, such as tissue repair, immune regulation, and intercellular communication. However, the limited capacity for cell proliferation and the secretion of senescence-associated secreted phenotypes (SASPs) pose challenges for the clinical application of MSCs. In this review, we provide a comprehensive summary of the senescence characteristics of MSCs and examine the different features of cellular microenvironments studied thus far. Additionally, we discuss the mechanisms by which cellular microenvironments regulate the senescence process of MSCs, offering insights into preserving their functionality and enhancing their effectiveness.
Collapse
Affiliation(s)
| | | | - Shu Guo
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Mengzhu Lv
- Department of Plastic Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, China
| |
Collapse
|
7
|
Magryś A, Pawlik M. Postbiotic Fractions of Probiotics Lactobacillus plantarum 299v and Lactobacillus rhamnosus GG Show Immune-Modulating Effects. Cells 2023; 12:2538. [PMID: 37947616 PMCID: PMC10648844 DOI: 10.3390/cells12212538] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/12/2023] Open
Abstract
Probiotic bacteria belonging to Lactobacillus spp. are important producers of bioactive molecules, known as postbiotics, that play essential roles in the immunological support of the intestinal mucosa. In this study, the system of co-culture of intestinal epithelial cells with macrophage cells in vitro was used to study the potential effect of postbiotic fractions of L. rhamonosus and L. plantarum on the modulation of the immune response induced by pro-inflammatory stimuli. This study's results revealed that the presence of probiotic bacterial components on the mucosal surface in the early and late stage of inflammatory conditions is based on cellular interactions that control inflammation and consequent damage to the intestinal epithelium. In our studies, heat killed fractions of probiotic bacteria and their extracted proteins showed a beneficial effect on controlling inflammation, regardless of the strain tested, consequently protecting intestinal barrier damage. In conclusion, the presented results emphasize that the fractions of probiotic bacteria of L. plantarum and L. rhamnosus may play a significant role in the regulation of LPS-mediated cytotoxic activity in intestinal epithelial cells. The fractions of probiotic strains of L. rhamnosus and L. plantarum showed the potential to suppress inflammation, effectively activating the anti-inflammatory cytokine IL-10 and modulating the IL-18-related response.
Collapse
Affiliation(s)
- Agnieszka Magryś
- Chair and Department of Medical Microbiology, Medical University of Lublin, ul. Chodźki 1, 20-093 Lublin, Poland
| | | |
Collapse
|
8
|
Subedi P, Huber K, Sterr C, Dietz A, Strasser L, Kaestle F, Hauck SM, Duchrow L, Aldrian C, Monroy Ordonez EB, Luka B, Thomsen AR, Henke M, Gomolka M, Rößler U, Azimzadeh O, Moertl S, Hornhardt S. Towards unravelling biological mechanisms behind radiation-induced oral mucositis via mass spectrometry-based proteomics. Front Oncol 2023; 13:1180642. [PMID: 37384298 PMCID: PMC10298177 DOI: 10.3389/fonc.2023.1180642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/22/2023] [Indexed: 06/30/2023] Open
Abstract
Objective Head and neck cancer (HNC) accounts for almost 890,000 new cases per year. Radiotherapy (RT) is used to treat the majority of these patients. A common side-effect of RT is the onset of oral mucositis, which decreases the quality of life and represents the major dose-limiting factor in RT. To understand the origin of oral mucositis, the biological mechanisms post-ionizing radiation (IR) need to be clarified. Such knowledge is valuable to develop new treatment targets for oral mucositis and markers for the early identification of "at-risk" patients. Methods Primary keratinocytes from healthy volunteers were biopsied, irradiated in vitro (0 and 6 Gy), and subjected to mass spectrometry-based analyses 96 h after irradiation. Web-based tools were used to predict triggered biological pathways. The results were validated in the OKF6 cell culture model. Immunoblotting and mRNA validation was performed and cytokines present in cell culture media post-IR were quantified. Results Mass spectrometry-based proteomics identified 5879 proteins in primary keratinocytes and 4597 proteins in OKF6 cells. Amongst them, 212 proteins in primary keratinocytes and 169 proteins in OKF6 cells were differentially abundant 96 h after 6 Gy irradiation compared to sham-irradiated controls. In silico pathway enrichment analysis predicted interferon (IFN) response and DNA strand elongation pathways as mostly affected pathways in both cell systems. Immunoblot validations showed a decrease in minichromosome maintenance (MCM) complex proteins 2-7 and an increase in IFN-associated proteins STAT1 and ISG15. In line with affected IFN signalling, mRNA levels of IFNβ and interleukin 6 (IL-6) increased significantly following irradiation and also levels of secreted IL-1β, IL-6, IP-10, and ISG15 were elevated. Conclusion This study has investigated biological mechanisms in keratinocytes post-in vitro ionizing radiation. A common radiation signature in keratinocytes was identified. The role of IFN response in keratinocytes along with increased levels of pro-inflammatory cytokines and proteins could hint towards a possible mechanism for oral mucositis.
Collapse
Affiliation(s)
- Prabal Subedi
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Katharina Huber
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Christoph Sterr
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Anne Dietz
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Lukas Strasser
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Felix Kaestle
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Stefanie M. Hauck
- Helmholtz Zentrum München, German Research Centre for Environmental Health, Metabolomics and Proteomics Core, Munich, Germany
| | - Lukas Duchrow
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Christine Aldrian
- Department of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany
| | - Elsa Beatriz Monroy Ordonez
- Department of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany
| | - Benedikt Luka
- Department of Conservative Dentistry Periodontology and Preventive Dentistry, Hannover Medical School (MHH), Hannover, Germany
| | - Andreas R. Thomsen
- Department of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK) Partner Site Freiburg, German Cancer Research Center (dkfz), Heidelberg, Germany
| | - Michael Henke
- Department of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, German Cancer Consortium (DKTK) partner site Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK) Partner Site Freiburg, German Cancer Research Center (dkfz), Heidelberg, Germany
| | - Maria Gomolka
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Ute Rößler
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Omid Azimzadeh
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Simone Moertl
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| | - Sabine Hornhardt
- Bundesamt für Strahlenschutz/Federal Office for Radiation Protection, Neuherberg, Germany
| |
Collapse
|
9
|
Ma J, Ma B, Wang Z, Chen Y, Ma R, Dong Y. Effect of splenic transfer factor on the development of intestinal mucosal barrier in laying hens. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:1342-1354. [PMID: 36151767 DOI: 10.1002/jsfa.12228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/28/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND The aim of this study was to investigate the effects of different doses of chicken spleen transfer factor (TF) on the structure of intestinal epithelial cells in different age groups. One-day-old White Leghorns laying hens were randomly divided into four groups: three groups were administered TF at different dosages (0.10, 0.25 or 1.00 mL) and a fourth group was set as control (administered saline, 1.00 mL). Using hematoxylin and eosin staining, high-throughput sequencing, microbiota analysis, quantitative polymerase reaction and western blotting. RESULTS We measured the effects of different doses of TF on the following: intestinal mucosal epithelial tissue morphology, intestinal mucosal epithelial barrier-related gene expression profiles, and intestinal epithelial tight junction gene protein levels. The collected data show that TF can improve the absorption of nutrients by increasing villus height and crypt depth, and regulate intestinal flora disorders. Furthermore, we verified that the expression of the claudin and occludin tight junctions between intestinal epithelial cells was increased with TF. this research is very important for focusing on the structure and gene expression of intestinal tissues. CONCLUSION The results provide a scientific rationale for feeding and nutrition programs for green and healthy farming, as well as technical support to improve the production efficiency of the livestock and poultry breeding industry. © 2022 Society of Chemical Industry.
Collapse
Affiliation(s)
- Junxing Ma
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Baochen Ma
- China Animal Husbandry Group, Beijing, China
| | - Zixu Wang
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yaoxing Chen
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Ruiqin Ma
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yulan Dong
- Key Laboratory of Precision Nutrition and Food Quality, Ministry of Education, College of Veterinary Medicine, China Agricultural University, Beijing, China
| |
Collapse
|
10
|
Littlefield KM, Schneider JM, Neff CP, Soesanto V, Siebert JC, Nusbacher NM, Moreno-Huizar N, Cartwright IM, Armstrong AJS, Colgen SP, Lozupone CA, Palmer BE. Elevated inflammatory fecal immune factors in men who have sex with men with HIV associate with microbiome composition and gut barrier function. Front Immunol 2022; 13:1072720. [PMID: 36605218 PMCID: PMC9808389 DOI: 10.3389/fimmu.2022.1072720] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction People living with HIV infection (PLWH) exhibit elevated levels of gastrointestinal inflammation. Potential causes of this inflammation include HIV infection and associated immune dysfunction, sexual behaviors among men who have sex with men (MSM) and gut microbiome composition. Methods To better understand the etiology of gastrointestinal inflammation we examined levels of 28 fecal soluble immune factors (sIFs) and the fecal microbiome in well-defined cohorts of HIV seronegative MSM (MSM-SN), MSM with untreated HIV infection (MSM-HIV) and MSM with HIV on anti-retroviral treatment (MSMART). Additionally, fecal solutes from these participants were used to stimulate T-84 colonic epithelial cells to assess barrier function. Results Both MSM cohorts with HIV had elevated levels of fecal calprotectin, a clinically relevant marker of GI inflammation, and nine inflammatory fecal sIFs (GM-CSF, ICAM-1, IL-1β, IL-12/23, IL-15, IL-16, TNF-β, VCAM-1, and VEGF). Interestingly, four sIFs (GM-CSF, ICAM-1, IL-7 and IL-12/23) were significantly elevated in MSM-SN compared to seronegative male non-MSM. Conversely, IL-22 and IL-13, cytokines beneficial to gut health, were decreased in all MSM with HIV and MSM-SN respectively. Importantly, all of these sIFs significantly correlated with calprotectin, suggesting they play a role in GI inflammation. Principal coordinate analysis revealed clustering of fecal sIFs by MSM status and significant associations with microbiome composition. Additionally, fecal solutes from participants in the MSM-HIV cohort significantly decreased colonic transcellular fluid transport in vitro, compared to non-MSM-SN, and this decrease associated with overall sIF composition and increased concentrations of eight inflammatory sIFs in participants with HIV. Lastly, elevated levels of plasma, sCD14 and sCD163, directly correlated with decreased transcellular transport and microbiome composition respectively, indicating that sIFs and the gut microbiome are associated with, and potentially contribute to, bacterial translocation. Conclusion Taken together, these data demonstrate that inflammatory sIFs are elevated in MSM, regardless of HIV infection status, and are associated with the gut microbiome and intestinal barrier function.
Collapse
Affiliation(s)
| | | | - Charles P. Neff
- Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Victoria Soesanto
- Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Janet C. Siebert
- Department of Medicine, University of Colorado, Aurora, CO, United States
- CytoAnalytics, Denver, CO, United States
| | - Nichole M. Nusbacher
- Department of Biomedical Informatics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Nancy Moreno-Huizar
- Department of Biomedical Informatics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Ian M. Cartwright
- Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Abigail J. S. Armstrong
- Department of Biomedical Informatics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Sean P. Colgen
- Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Catherine A. Lozupone
- Department of Biomedical Informatics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Brent E. Palmer
- Department of Medicine, University of Colorado, Aurora, CO, United States
| |
Collapse
|
11
|
Centella asiatica-Derived Endothelial Paracrine Restores Epithelial Barrier Dysfunction in Radiation-Induced Enteritis. Cells 2022; 11:cells11162544. [PMID: 36010621 PMCID: PMC9406831 DOI: 10.3390/cells11162544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/30/2022] [Accepted: 08/14/2022] [Indexed: 11/17/2022] Open
Abstract
Radiation-induced enteritis is frequently observed following radiotherapy for cancer or occurs due to radiation exposure in a nuclear accident. The loss of the epithelial integrity leads to ‘leaky gut’, so recovery of damaged epithelium is an important strategy in therapeutic trials. Centella asiatica (CA), a traditional herbal medicine, is widely used for wound healing by protecting against endothelial damage. In this study, we investigated the radio-mitigating effect of CA, focusing on the crosstalk between endothelial and epithelial cells. CA treatment relieved radiation-induced endothelial dysfunction and mitigated radiation-induced enteritis. In particular, treatment of the conditioned media from CA-treated irradiated endothelial cells recovered radiation-induced epithelial barrier damage. We also determined that epidermal growth factor (EGF) is a critical factor secreted by CA-treated irradiated endothelial cells. Treatment with EGF effectively improved the radiation-induced epithelial barrier dysfunction. We also identified the therapeutic effects of CA-induced endothelial paracrine in a radiation-induced enteritis mouse model with epithelial barrier restoration. Otherwise, CA treatment did not show radioprotective effects on colorectal tumors in vivo. We showed therapeutic effects of CA on radiation-induced enteritis, with the recovery of endothelial and epithelial dysfunction. Thus, our findings suggest that CA is an effective radio-mitigator against radiation-induced enteritis.
Collapse
|
12
|
Xing C, Yang F, Lin Y, Shan J, Yi X, Ali F, Zhu Y, Wang C, Zhang C, Zhuang Y, Cao H, Hu G. Hexavalent Chromium Exposure Induces Intestinal Barrier Damage via Activation of the NF-κB Signaling Pathway and NLRP3 Inflammasome in Ducks. Front Immunol 2022; 13:952639. [PMID: 35935959 PMCID: PMC9353580 DOI: 10.3389/fimmu.2022.952639] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 06/23/2022] [Indexed: 11/30/2022] Open
Abstract
Hexavalent chromium [Cr(VI)] is a dangerous heavy metal which can impair the gastrointestinal system in various species; however, the processes behind Cr(VI)-induced intestinal barrier damage are unknown. Forty-eight healthy 1-day-old ducks were stochastically assigned to four groups and fed a basal ration containing various Cr(VI) dosages for 49 days. Results of the study suggested that Cr(VI) exposure could significantly increase the content of Cr(VI) in the jejunum, increase the level of diamine oxidase (DAO) in serum, affect the production performance, cause histological abnormalities (shortening of the intestinal villi, deepening of the crypt depth, reduction and fragmentation of microvilli) and significantly reduced the mRNA levels of intestinal barrier-related genes (ZO-1, occludin, claudin-1, and MUC2) and protein levels of ZO-1, occludin, cand laudin-1, resulting in intestinal barrier damage. Furthermore, Cr(VI) intake could increase the contents of hydrogen peroxide (H2O2) and malondialdehyde (MDA), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-18 (IL-18) but decrease the activities of total superoxide dismutase (T-SOD), catalase (CAT), and glutathione reductase (GR), as well as up-regulate the mRNA levels of TLR4, MyD88, NF-κB, TNFα, IL-6, NLRP3, caspase-1, ASC, IL-1β, and IL-18 and protein levels of TLR4, MyD88, NF-κB, NLRP3, caspase-1, ASC, IL-1β, and IL-18 in the jejunum. In conclusion, Cr(VI) could cause intestinal oxidative damage and inflammation in duck jejunum by activating the NF-κB signaling pathway and the NLRP3 inflammasome.
Collapse
Affiliation(s)
- Chenghong Xing
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Fan Yang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Yiqun Lin
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Jiyi Shan
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Xin Yi
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Farah Ali
- Department of Theriogenology, Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Yibo Zhu
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Chang Wang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Caiying Zhang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Yu Zhuang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| | - Huabin Cao
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
- *Correspondence: Guoliang Hu, ; Huabin Cao,
| | - Guoliang Hu
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
- *Correspondence: Guoliang Hu, ; Huabin Cao,
| |
Collapse
|
13
|
Ma M, Bai X, Wang Z, Dong Y, Chen Y, Cao J. Distribution of intraepithelial lymphocytes, mast cells, and goblet cells in the intestine of alpaca. Anat Histol Embryol 2022; 51:501-508. [PMID: 35656747 DOI: 10.1111/ahe.12823] [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: 04/27/2021] [Revised: 07/19/2021] [Accepted: 05/24/2022] [Indexed: 11/28/2022]
Abstract
Intestinal diseases in ruminants are frequent and susceptible to invasion by exogenous substances, and the intestinal mucosal barrier is the first line of defence of the body's immune defence. At present, the study on the structure of intestinal mucosal immune barrier in alpaca is incomplete. Therefore, the alpaca intestines were studied to show the distribution characteristics of intestinal mucosal barrier structure and cells associated with immune system using histology, histochemistry, and immunohistochemistry. The results showed that the intestinal tract of alpaca was composed of mucosa, submucosa, muscularis, and serosa. Intraepithelial lymphocytes were distributed in mucosal epithelium and glands of the large intestine. Mast cells were distributed in each segment of the intestine, mainly in the intestinal lamina propria, intestinal glands, and duodenal glands around, as well as in the muscularis, and the particles of cytoplasm were obvious. Acidic goblet cells were mainly distributed in the ileal mucosal epithelium and ileal intestinal glands, while sialomucins were mainly expressed in the colon. The cells associated with the immune system in the intestinal mucosa of alpaca play an important role in protecting against foreign microbial invasion and infection, and this result provides a theoretical basis for revealing the occurrence of gastrointestinal diseases in alpaca.
Collapse
Affiliation(s)
- Meng Ma
- Laboratory of Anatomy of Domestic Animal, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xue Bai
- Laboratory of Anatomy of Domestic Animal, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Zixu Wang
- Laboratory of Anatomy of Domestic Animal, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yulan Dong
- Laboratory of Anatomy of Domestic Animal, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yaoxing Chen
- Laboratory of Anatomy of Domestic Animal, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jing Cao
- Laboratory of Anatomy of Domestic Animal, College of Veterinary Medicine, China Agricultural University, Beijing, China
| |
Collapse
|
14
|
Kashem MA, Li L, Yuan XY, Plummer FA, Luo M. Toll-like Interleukin -1 Receptor Regulator (TILRR) Protein, a Major Modulator of Inflammation, is Expressed in Normal Human and Macaque Tissues and PBMCs. J Inflamm Res 2022; 15:2925-2937. [PMID: 35592073 PMCID: PMC9113122 DOI: 10.2147/jir.s357866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/27/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose TILRR is a modulator of genes in the NF-κB inflammation pathway. It regulates inflammation-responsive genes, the secretion of inflammatory mediators, and the migration of immune cells. Because inflammation drives the pathogenesis of many infectious and inflammatory diseases, it is important to know the expression of TILRR protein in tissues and cells. This study examined TILRR protein expression in healthy adult human and macaques’ tissues and PBMCs (peripheral blood mononuclear cells). Methods and Results Tissues (trachea, lungs, stomach, small intestine [ileum], cecum, colon, rectum, vagina, cervix, uterus, and penis) and PBMCs from humans and macaques were lysed in RIPA (radioimmunoprecipitation assay) lysis buffer. The TILRR protein was examined by fluorescent Western blot analysis. The relative fluorescence units (rfu) of TILRR protein expression were quantified by Image Studio software (LI-COR). The results showed that adult healthy female (n=1) rectal and cervicovaginal tissues expressed a higher level of TILRR protein than the other tissues (trachea, lungs, stomach, small intestine [ileum], cecum, colon, uterus, and penis) examined. Like humans, the lungs, colon, and rectal tissues of healthy adult female cynomolgus monkeys (Macaca fascicularis) (n=2) expressed the TILRR protein. In addition, PBMCs of healthy adult women (n=4), adult female cynomolgus monkeys (Macaca fascicularis) (n=4), and adult male and female rhesus monkeys (Macaca mulatta) (n=4) showed a similar expression level of TILRR protein (p= 0.2858). TILRR protein was not detected in most of the human cell lines examined, except in Jurkat cells. Conclusion Our study for the first time showed that TILRR protein is expressed in healthy adult human and monkey tissues and PBMCs. The TILRR protein in these tissues and PBMCs may play a role in the inflammatory response of these tissues and cells in response to infectious pathogens.
Collapse
Affiliation(s)
- Mohammad Abul Kashem
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
- JC Wilt Infectious Diseases Research Center, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
- Department of Microbiology and Veterinary Public Health, Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh
| | - Lin Li
- JC Wilt Infectious Diseases Research Center, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - Xin-Yong Yuan
- JC Wilt Infectious Diseases Research Center, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - Francis A Plummer
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
| | - Ma Luo
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, MB, Canada
- JC Wilt Infectious Diseases Research Center, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
- Correspondence: Ma Luo, JC Wilt Infectious Diseases Research Center, National Microbiology Laboratory, 745 Logan Avenue, Winnipeg, MB, R3E 3L5, Canada, Tel +1 204-789-5072, Fax +1 204-789-2018, Email
| |
Collapse
|
15
|
Lock JY, Caboni M, Strandwitz P, Morrissette M, DiBona K, Joughin BA, Lewis K, Carrier RL. An in vitro intestinal model captures immunomodulatory properties of the microbiota in inflammation. Gut Microbes 2022; 14:2039002. [PMID: 35316142 PMCID: PMC8942420 DOI: 10.1080/19490976.2022.2039002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 01/24/2022] [Indexed: 02/04/2023] Open
Abstract
Considerable effort has been put forth to understand mechanisms by which the microbiota modulates and responds to inflammation. Here, we explored whether oxidation metabolites produced by the host during inflammation, sodium nitrate and trimethylamine oxide, impact the composition of a human stool bacterial population in a gut simulator. We then assessed whether an immune-competent in vitro intestinal model responded differently to spent medium from bacteria exposed to these cues compared to spent medium from a control bacterial population. The host-derived oxidation products were found to decrease levels of Bacteroidaceae and overall microbiota metabolic potential, while increasing levels of proinflammatory Enterobacteriaceae and lipopolysaccharide in bacterial cultures, reflecting shifts that occur in vivo in inflammation. Spent microbiota media induced elevated intracellular mucin levels and reduced intestinal monolayer integrity as reflected in transepithelial electrical resistance relative to fresh medium controls. However, multiplexed cytokine analysis revealed markedly different cytokine signatures from intestinal cultures exposed to spent medium with added oxidation products relative to spent control medium, while cytokine signatures of cultures exposed to fresh media were similar regardless of addition of host-derived cues. Further, the presence of immune cells in the intestinal model was required for this differentiation of cytokine signatures. This study indicates that simple in vitro immune-competent intestinal models can capture bacterial-mammalian cross-talk in response to host-derived oxidation products and supports utility of these systems for mechanistic studies of interactions between the gut microbiome and host in inflammation.
Collapse
Affiliation(s)
- Jaclyn Y. Lock
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
| | - Mariaelena Caboni
- Antimicrobial Discovery Center, Department of Biology, Northeastern University, Boston, Massachusetts, USA
| | - Philip Strandwitz
- Antimicrobial Discovery Center, Department of Biology, Northeastern University, Boston, Massachusetts, USA
| | - Madeleine Morrissette
- Antimicrobial Discovery Center, Department of Biology, Northeastern University, Boston, Massachusetts, USA
| | - Kevin DiBona
- Department of Biochemistry, Northeastern University, Boston, Massachusetts, USA
| | - Brian A. Joughin
- The Koch Institute for Integrative Cancer Research at Mit and the Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massacusetts, USA
| | - Kim Lewis
- Antimicrobial Discovery Center, Department of Biology, Northeastern University, Boston, Massachusetts, USA
| | - Rebecca L. Carrier
- Department of Bioengineering, Northeastern University, Boston, Massachusetts, USA
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts, USA
- Department of Biology, Northeastern University, Boston, Massachusetts, USA
| |
Collapse
|
16
|
Terzić-Vidojević A, Veljović K, Popović N, Tolinački M, Golić N. Enterococci from Raw-Milk Cheeses: Current Knowledge on Safety, Technological, and Probiotic Concerns. Foods 2021; 10:2753. [PMID: 34829034 PMCID: PMC8624194 DOI: 10.3390/foods10112753] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/03/2021] [Accepted: 11/08/2021] [Indexed: 12/22/2022] Open
Abstract
The present study is focused on the safety, technological characteristics, and probiotic evaluation of Enterococcus species from different artisanal raw milk dairy products, mainly cheeses with ripening. Apart from proteolytic and lipolytic activities, most enterococci show the ability to metabolize citrate and convert it to various aromatic compounds. Long-ripened cheeses therefore have a specific flavor that makes them different from cheeses produced from thermally treated milk with commercial starter cultures. In addition, enterococci are producers of bacteriocins effective against spoilage and pathogenic bacteria, so they can be used as food preservatives. However, the use of enterococci in the dairy industry should be approached with caution. Although originating from food, enterococci strains may carry various virulence factors and antibiotic-resistance genes and can have many adverse effects on human health. Still, despite their controversial status, the use of enterococci in the food industry is not strictly regulated since the existence of these so-called desirable and undesirable traits in enterococci is a strain-dependent characteristic. To be specific, the results of many studies showed that there are some enterococci strains that are safe for use as starter cultures or as probiotics since they do not carry virulence factors and antibiotic-resistance genes. These strains even exhibit strong health-promoting effects such as stimulation of the immune response, anti-inflammatory activity, hypocholesterolemic action, and usefulness in prevention/treatment of some diseases.
Collapse
Affiliation(s)
- Amarela Terzić-Vidojević
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia; (K.V.); (N.P.); (M.T.); (N.G.)
| | | | | | | | | |
Collapse
|
17
|
Kaur H, Erickson A, Moreau R. Divergent regulation of inflammatory cytokines by mTORC1 in THP-1-derived macrophages and intestinal epithelial Caco-2 cells. Life Sci 2021; 284:119920. [PMID: 34478760 DOI: 10.1016/j.lfs.2021.119920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 08/13/2021] [Accepted: 08/21/2021] [Indexed: 12/12/2022]
Abstract
AIMS The sustained activation of intestinal mechanistic target of rapamycin complex 1 (mTORC1) brought about by repeated mucosal insult or injury has been linked to escalation of gut inflammatory response, which may progress to damage the epithelium if not controlled. This study investigated the role of mTORC1 in the response of macrophage and enterocyte to inflammatory stimuli. MATERIALS AND METHODS We genetically manipulated human THP-1 monocytes and epithelial intestinal Caco-2 cells to generate stable cell lines with baseline, low or high mTORC1 kinase activity. The effects of THP-1 macrophage secretions onto Caco-2 cells were investigated by means of conditioned media transfer experiments. KEY FINDINGS The priming of mTORC1 for activation promoted lipopolysaccharide (LPS)-mediated THP-1 macrophage immune response as evidenced by the stimulation of inflammatory mediators (TNFα, IL-6, IL-8, IL-1β and IL-10). The treatment of THP-1 macrophages with LPS more than the manipulated level of mTORC1 activity of macrophages determined whether cytokine gene expression was induced in Caco-2 cells. LPS carry over was not responsible for the stimulation of Caco-2 cells' cytokine response. Knocking down Raptor in Caco-2 cells or treating Caco-2 cells with rapamycin enhanced Caco-2 TNFα gene expression revealing the anti-inflammatory role of a functional mTORC1 in intestinal epithelial cells exposed to macrophage-derived pro-inflammatory stimuli. SIGNIFICANCE Taken together, mTORC1 differentially impacts the immune responses of THP-1-derived macrophages and Caco-2 epithelial cells when placed in a pro-inflammatory microenvironment.
Collapse
Affiliation(s)
- Harleen Kaur
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Anjeza Erickson
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Régis Moreau
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA.
| |
Collapse
|
18
|
Martchenko SE, Prescott D, Martchenko A, Sweeney ME, Philpott DJ, Brubaker PL. Diurnal changes in the murine small intestine are disrupted by obesogenic Western Diet feeding and microbial dysbiosis. Sci Rep 2021; 11:20571. [PMID: 34663882 PMCID: PMC8523685 DOI: 10.1038/s41598-021-98986-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 09/01/2021] [Indexed: 02/07/2023] Open
Abstract
Intestinal functions demonstrate circadian rhythms thought to be entrained, in part, by an organisms’ intrinsic feeding and fasting periods as well as by the intestinal microbiome. Circadian disruption as a result of ill-timed nutrient exposure and obesogenic feeding poses an increased risk to disease. As such, the aim of this study was to assess the relationships between dietary timing, composition, and the microbiome with regard to rhythmic small intestinal structure and mucosal immunity. Rodent chow (RC)-mice exhibited time-dependent increases in small intestinal weight, villus height, and crypt depth as well as an increased proportion of CD8αα+ cells and concomitant decrease in CD8αβ+ cells at the onset of the feeding period (p < 0.05–0.001). Western diet (WD)-animals displayed disrupted time-dependent patterns in intestinal structure and lymphocyte populations (p < 0.05–0.01). Antibiotic-induced microbial depletion abrogated the time- and diet-dependent patterns in both RC- and WD-mice (p < 0.05–0.001). However, although germ-free-mice displayed altered rhythms, fecal microbial transfer from RC-mice was generally unsuccessful in restoring structural and immune changes in these animals. This study shows that adaptive changes in the small intestine at the onset of the feeding and fasting periods are disrupted by WD-feeding, and that these changes are dependent, in part, on the intestinal microbiome.
Collapse
Affiliation(s)
- Sarah E Martchenko
- Departments of Physiology, University of Toronto, Rm 3366 Medical Sciences Building, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
| | - David Prescott
- Department of Immunology, University of Toronto, Toronto, ON, Canada.,Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Alexandre Martchenko
- Departments of Physiology, University of Toronto, Rm 3366 Medical Sciences Building, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
| | - Maegan E Sweeney
- Departments of Physiology, University of Toronto, Rm 3366 Medical Sciences Building, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
| | - Dana J Philpott
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Patricia L Brubaker
- Departments of Physiology, University of Toronto, Rm 3366 Medical Sciences Building, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada. .,Department of Medicine, University of Toronto, Toronto, ON, Canada.
| |
Collapse
|
19
|
Dutton JS, Hinman SS, Kim R, Attayek PJ, Maurer M, Sims CS, Allbritton NL. Hyperglycemia minimally alters primary self-renewing human colonic epithelial cells while TNFα-promotes severe intestinal epithelial dysfunction. Integr Biol (Camb) 2021; 13:139-152. [PMID: 33989405 PMCID: PMC8204630 DOI: 10.1093/intbio/zyab008] [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: 12/10/2020] [Revised: 03/06/2021] [Accepted: 04/16/2021] [Indexed: 11/15/2022]
Abstract
Hyperglycemia is thought to increase production of inflammatory cytokines and permeability of the large intestine. Resulting intestinal inflammation is then often characterized by excess secretion of tumor necrosis factor alpha (TNFα). Thus, hyperglycemia in hospitalized patients suffering from severe trauma or disease is frequently accompanied by TNFα secretion, and the combined impact of these insults on the intestinal epithelium is poorly understood. This study utilized a simple yet elegant model of the intestinal epithelium, comprised of primary human intestinal stem cells and their differentiated progeny, to investigate the impact of hyperglycemia and inflammatory factors on the colonic epithelium. When compared to epithelium cultured under conditions of physiologic glucose, cells under hyperglycemic conditions displayed decreased mucin-2 (MUC2), as well as diminished alkaline phosphatase (ALP) activity. Conditions of 60 mM glucose potentiated secretion of the cytokine IL-8 suggesting that cytokine secretion during hyperglycemia may be a source of tissue inflammation. TNFα measurably increased secretion of IL-8 and IL-1β, which was enhanced at 60 mM glucose. Surprisingly, intestinal permeability and paracellular transport were not altered by even extreme levels of hyperglycemia. The presence of TNFα increased MUC2 presence, decreased ALP activity, and negatively impacted monolayer barrier function. When TNFα hyperglycemia and ≤30 mM glucose and were combined, MUC2 and ALP activity remained similar to that of TNFα alone, although synergistic effects were seen at 60 mM glucose. An automated image analysis pipeline was developed to assay changes in properties of the zonula occludens-1 (ZO-1)-demarcated cell boundaries. While hyperglycemia alone had little impact on cell shape and size, cell morphologic properties were extraordinarily sensitive to soluble TNFα. These results suggest that TNFα acted as the dominant modulator of the epithelium relative to glucose, and that control of inflammation rather than glucose may be key to maintaining intestinal homeostasis.
Collapse
Affiliation(s)
- Johanna S Dutton
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill, and North Carolina State University, Raleigh, NC, USA
| | - Samuel S Hinman
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Raehyun Kim
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Peter J Attayek
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill, and North Carolina State University, Raleigh, NC, USA
| | - Mallory Maurer
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill, and North Carolina State University, Raleigh, NC, USA
| | - Christopher S Sims
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Nancy L Allbritton
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| |
Collapse
|
20
|
Adverse Effects of Heat Stress on the Intestinal Integrity and Function of Pigs and the Mitigation Capacity of Dietary Antioxidants: A Review. Animals (Basel) 2021; 11:ani11041135. [PMID: 33921090 PMCID: PMC8071411 DOI: 10.3390/ani11041135] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/12/2021] [Accepted: 04/12/2021] [Indexed: 12/16/2022] Open
Abstract
Heat stress (HS) significantly affects the performance of pigs by its induced stressors such as inflammation, hypoxia and oxidative stress (OS), which mightily strain the intestinal integrity and function of pigs. As heat stress progresses, several mechanisms in the intestinal epithelium involved in the absorption of nutrients and its protective functions are altered. Changes in these mechanisms are mainly driven by cellular oxidative stress, which promotes disruption of intestinal homeostasis, leading to intestinal permeability, emphasizing intestinal histology and morphology with little possibility of recovering even after exposure to HS. Identification and understanding of these altered mechanisms are crucial for providing appropriate intervention strategies. Therefore, it is this papers' objective to review the important components for intestinal integrity that are negatively affected by HS and its induced stressors. With due consideration to the amelioration of such effects through nutritional intervention, this work will also look into the capability of dietary antioxidants in mitigating such adverse effects and maintaining the intestine's integrity and function upon the pigs' exposure to high environmental temperature.
Collapse
|
21
|
Wojtacha P, Trybowski W, Podlasz P, Żmigrodzka M, Tyburski J, Polak-Śliwińska M, Jakimiuk E, Bakuła T, Baranowski M, Żuk-Gołaszewska K, Zielonka Ł, Obremski K. Effects of a Low Dose of T-2 Toxin on the Percentage of T and B Lymphocytes and Cytokine Secretion in the Porcine Ileal Wall. Toxins (Basel) 2021; 13:toxins13040277. [PMID: 33924586 PMCID: PMC8070124 DOI: 10.3390/toxins13040277] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/09/2021] [Accepted: 04/11/2021] [Indexed: 12/12/2022] Open
Abstract
Plant materials used in the production of pig feed are frequently contaminated with mycotoxins. T-2 toxin is a secondary metabolite of selected Fusarium species, and it can exert a harmful influence on living organisms. Most mycotoxins enter the body via the gastrointestinal tract, and they can modulate the gut-associated lymphoid tissue (GALT) function. However, little is known about the influence of low T-2 toxin doses on GALT. Therefore, the aim of this study was to evaluate the effect of T-2 toxin administered at 50% of the lowest-observed-adverse-effect level (LOAEL) on the percentage of CD2+ T cells, CD4+ T helper cells, CD8+ cytotoxic T cells, CD4+CD8+ double-positive T cells, TCRγδ+ cells, CD5+CD8- B1 cells, and CD21+ B2 cells, and the secretion of proinflammatory (IFN-γ, IL-1β, IL-2, IL-12/23p40, IL-17A), anti-inflammatory, and regulatory (IL-4, IL-10, TGF-β) cytokines in the porcine ileal wall. The results of the study revealed that T-2 toxin disrupts the development of tolerance to food antigens by enhancing the secretion of proinflammatory and regulatory cytokines and decreasing the production of anti-inflammatory TGF-β. T-2 toxin triggered the cellular response, which was manifested by an increase in the percentage of CD8+ T cells and a decrease in the percentage of B2 and Tγδ lymphocytes.
Collapse
Affiliation(s)
- Paweł Wojtacha
- Department of Industrial and Food Microbiology, Faculty of Food Science, University of Warmia and Mazury in Olsztyn, 10-726 Olsztyn, Poland;
| | | | - Piotr Podlasz
- Department of Pathophysiology, Forensic Veterinary Medicine and Administration, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-718 Olsztyn, Poland
- Correspondence: (P.P.); (K.O.)
| | - Magdalena Żmigrodzka
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences—SGGW, 02-776 Warsaw, Poland;
| | - Józef Tyburski
- Department of Agroecosystems and Horticulture, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland;
| | - Magdalena Polak-Śliwińska
- Department of Commodity Science and Food Analysis, Faculty of Food Science, University of Warmia and Mazury in Olsztyn, 10-726 Olsztyn, Poland;
| | - Ewa Jakimiuk
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-718 Olsztyn, Poland; (E.J.); (T.B.); (M.B.); (Ł.Z.)
| | - Tadeusz Bakuła
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-718 Olsztyn, Poland; (E.J.); (T.B.); (M.B.); (Ł.Z.)
| | - Mirosław Baranowski
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-718 Olsztyn, Poland; (E.J.); (T.B.); (M.B.); (Ł.Z.)
| | - Krystyna Żuk-Gołaszewska
- Department of Agrotechnology and Agribusines, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland;
| | - Łukasz Zielonka
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-718 Olsztyn, Poland; (E.J.); (T.B.); (M.B.); (Ł.Z.)
| | - Kazimierz Obremski
- Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, 10-718 Olsztyn, Poland; (E.J.); (T.B.); (M.B.); (Ł.Z.)
- Correspondence: (P.P.); (K.O.)
| |
Collapse
|
22
|
Hou Q, Huang J, Ayansola H, Masatoshi H, Zhang B. Intestinal Stem Cells and Immune Cell Relationships: Potential Therapeutic Targets for Inflammatory Bowel Diseases. Front Immunol 2021; 11:623691. [PMID: 33584726 PMCID: PMC7874163 DOI: 10.3389/fimmu.2020.623691] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 12/03/2020] [Indexed: 12/11/2022] Open
Abstract
The mammalian intestine is the largest immune organ that contains the intestinal stem cells (ISC), differentiated epithelial cells (enterocytes, Paneth cells, goblet cells, tuft cells, etc.), and gut resident-immune cells (T cells, B cells, dendritic cells, innate lymphoid cell, etc.). Inflammatory bowel disease (IBD), a chronic inflammatory disease characterized by mucosa damage and inflammation, threatens the integrity of the intestine. The continuous renewal and repair of intestinal mucosal epithelium after injury depend on ISCs. Inflamed mucosa healing could be a new target for the improvement of clinical symptoms, disease recurrence, and resection-free survival in IBD treated patients. The knowledge about the connections between ISC and immune cells is expanding with the development of in vitro intestinal organoid culture and single-cell RNA sequencing technology. Recent findings implicate that immune cells such as T cells, ILCs, dendritic cells, and macrophages and cytokines secreted by these cells are critical in the regeneration of ISCs and intestinal epithelium. Transplantation of ISC to the inflamed mucosa may be a new therapeutic approach to reconstruct the epithelial barrier in IBD. Considering the links between ISC and immune cells, we predict that the integration of biological agents and ISC transplantation will revolutionize the future therapy of IBD patients.
Collapse
Affiliation(s)
- Qihang Hou
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition & Feed Science, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing, China
| | - Jingxi Huang
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition & Feed Science, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing, China
| | - Hammed Ayansola
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition & Feed Science, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing, China
| | - Hori Masatoshi
- Department of Veterinary Pharmacology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Bingkun Zhang
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition & Feed Science, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing, China
| |
Collapse
|
23
|
Bruellman R, Llorente C. A Perspective Of Intestinal Immune-Microbiome Interactions In Alcohol-Associated Liver Disease. Int J Biol Sci 2021; 17:307-327. [PMID: 33390852 PMCID: PMC7757023 DOI: 10.7150/ijbs.53589] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/13/2020] [Indexed: 02/07/2023] Open
Abstract
Uncovering the intricacies of the gut microbiome and how it interacts with the host immune system has opened up pathways in the search for the treatment of disease conditions. Alcohol-associated liver disease is a major cause of death worldwide. Research has shed light on the breakdown of the protective gut barriers, translocation of gut microbes to the liver and inflammatory immune response to microbes all contributing to alcohol-associated liver disease. This knowledge has opened up avenues for alternative therapies to alleviate alcohol-associated liver disease based on the interaction of the commensal gut microbiome as a key player in the regulation of the immune response. This review describes the relevance of the intestinal immune system, the gut microbiota, and specialized and non-specialized intestinal cells in the regulation of intestinal homeostasis. It also reflects how these components are altered during alcohol-associated liver disease and discusses new approaches for potential future therapies in alcohol-associated liver disease.
Collapse
Affiliation(s)
- Ryan Bruellman
- Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Cristina Llorente
- Department of Medicine, University of California San Diego, La Jolla, CA, USA
| |
Collapse
|
24
|
Beaurivage C, Kanapeckaite A, Loomans C, Erdmann KS, Stallen J, Janssen RAJ. Development of a human primary gut-on-a-chip to model inflammatory processes. Sci Rep 2020; 10:21475. [PMID: 33293676 PMCID: PMC7722760 DOI: 10.1038/s41598-020-78359-2] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 11/23/2020] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a complex multi-factorial disease for which physiologically relevant in vitro models are lacking. Existing models are often a compromise between biological relevance and scalability. Here, we integrated intestinal epithelial cells (IEC) derived from human intestinal organoids with monocyte-derived macrophages, in a gut-on-a-chip platform to model the human intestine and key aspects of IBD. The microfluidic culture of IEC lead to an increased polarization and differentiation state that closely resembled the expression profile of human colon in vivo. Activation of the model resulted in the polarized secretion of CXCL10, IL-8 and CCL-20 by IEC and could efficiently be prevented by TPCA-1 exposure. Importantly, upregulated gene expression by the inflammatory trigger correlated with dysregulated pathways in IBD patients. Finally, integration of activated macrophages offers a first-step towards a multi-factorial amenable IBD platform that could be scaled up to assess compound efficacy at early stages of drug development or in personalized medicine.
Collapse
Affiliation(s)
- Claudia Beaurivage
- Galapagos BV, Leiden, South Holland, 2333CL, The Netherlands
- Department of Biomedical Science, Faculty of Science, University of Sheffield, Sheffield, S10 2TN, South Yorkshire, UK
| | | | - Cindy Loomans
- Galapagos BV, Leiden, South Holland, 2333CL, The Netherlands
| | - Kai S Erdmann
- Department of Biomedical Science, Faculty of Science, University of Sheffield, Sheffield, S10 2TN, South Yorkshire, UK
| | - Jan Stallen
- Galapagos BV, Leiden, South Holland, 2333CL, The Netherlands
| | | |
Collapse
|
25
|
Kaur H, Moreau R. Curcumin steers THP-1 cells under LPS and mTORC1 challenges toward phenotypically resting, low cytokine-producing macrophages. J Nutr Biochem 2020; 88:108553. [PMID: 33220404 DOI: 10.1016/j.jnutbio.2020.108553] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 10/07/2020] [Accepted: 11/02/2020] [Indexed: 12/13/2022]
Abstract
The persistent activation of intestinal mechanistic target of rapamycin complex 1 (mTORC1) triggered by mucosal stress has been linked to deregulation of the gut immune response resulting in intestinal inflammation and cell death. The present study investigated the regulatory properties of food-derived mTORC1 modulators, curcumin, and piperine, toward the polarization of stimulated macrophages and the differentiation of monocytes at two mTORC1 activity levels (baseline and elevated). To that end, we created stable human THP-1 monocytes exhibiting normal or constitutively active mTORC1. Curcumin or its combination with piperine, but not piperine alone, suppressed mTORC1 kinase activity, curtailed lipopolysaccharide-mediated inflammatory response of THP-1 macrophages, and repressed macrophage activation by inhibiting signaling pathways involved in M1 (mTORC1) and M2 (mTORC2 and cAMP response element binding protein) polarization. The effects of piperine in the curcumin/piperine combination were modest overall, indicating it was curcumin that modulated differentiating monocytes into acquiring a M0 macrophage phenotype characterized by low inflammatory cytokine output.
Collapse
Affiliation(s)
- Harleen Kaur
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Régis Moreau
- Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, USA.
| |
Collapse
|
26
|
Li M, Wang J, Wu P, Manthari RK, Zhao Y, Li W, Wang J. Self-recovery study of the adverse effects of fluoride on small intestine: Involvement of pyroptosis induced inflammation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 742:140533. [PMID: 32721723 DOI: 10.1016/j.scitotenv.2020.140533] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/21/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
Increasing investigations suggest that fluoride (F) exposure was associated with gastrointestinal diseases, but related literatures were still largely insufficient and the underlying mechanisms have not been fully elucidated. Moreover, previous study in our lab reported F toxicity has the reversible tendency, but it still needs to be further explored. To address this issue, we established a 90 days F exposure and 15 days & 30 days self-recovery mice model, including control and three F groups (25, 50 and 100 mg/L sodium fluoride (NaF)) in each period. The results revealed that after 90 days F exposure, histological structure and ultrastructure of small intestine were markedly disrupted; the value of villus height to crypt depth, and expressions of tight junctions related mRNA and proteins were significantly decreased; intestinal permeability, pro-inflammatory cytokines and pyroptosis related mRNA and proteins were notably increased in duodenum, jejunum and ileum. However, intriguingly, after 30 days recovery period, indices in F groups almost all have recovered towards normalcy. Collectively, this study demonstrated that F exposure could impair the structure and epithelial barrier function of small intestine, leading to the intestinal inflammation, and pyroptosis may contribute to this damage; Furthermore, F toxicity on small intestine is reversible, and could be restored when off the F exposure environment for a certain period of time. Additionally, among the three regions of small intestine, duodenum seems more vulnerable to F exposure than jejunum and ileum.
Collapse
Affiliation(s)
- Meiyan Li
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Jinming Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Panhong Wu
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Ram Kumar Manthari
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Yangfei Zhao
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Wanpan Li
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China
| | - Jundong Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Veterinary Medicine, College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, China.
| |
Collapse
|
27
|
Oyesola OO, Früh SP, Webb LM, Tait Wojno ED. Cytokines and beyond: Regulation of innate immune responses during helminth infection. Cytokine 2020; 133:154527. [PMID: 30241895 PMCID: PMC6422760 DOI: 10.1016/j.cyto.2018.08.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 08/18/2018] [Accepted: 08/20/2018] [Indexed: 12/22/2022]
Abstract
Parasitic helminth infection elicits a type 2 cytokine-mediated inflammatory response. During type 2 inflammation, damaged or stimulated epithelial cells exposed to helminths and their products produce alarmins and cytokines including IL-25, IL-33, and thymic stromal lymphopoietin. These factors promote innate immune cell activation that supports the polarization of CD4+ T helper type 2 (Th2) cells. Activated innate and Th2 cells produce the cytokines IL-4, -5, -9, and -13 that perpetuate immune activation and act back on the epithelium to cause goblet cell hyperplasia and increased epithelial cell turnover. Together, these events facilitate worm expulsion and wound healing processes. While the role of Th2 cells in this context has been heavily studied, recent work has revealed that epithelial cell-derived cytokines are drivers of key innate immune responses that are critical for type 2 anti-helminth responses. Cutting-edge studies have begun to fully assess how other factors and pathways, including lipid mediators, chemokines, Fc receptor signaling, danger-associated molecular pattern molecules, and direct cell-cell interactions, also participate in shaping innate cell-mediated type 2 inflammation. In this review, we discuss how these pathways intersect and synergize with pathways controlled by epithelial cell-derived cytokines to coordinate innate immune responses that drive helminth-induced type 2 inflammation.
Collapse
Affiliation(s)
- Oyebola O Oyesola
- Baker Institute for Animal Health and Department of Microbiology and Immunology, Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Simon P Früh
- Baker Institute for Animal Health and Department of Microbiology and Immunology, Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Lauren M Webb
- Baker Institute for Animal Health and Department of Microbiology and Immunology, Cornell University College of Veterinary Medicine, Ithaca, NY, USA
| | - Elia D Tait Wojno
- Baker Institute for Animal Health and Department of Microbiology and Immunology, Cornell University College of Veterinary Medicine, Ithaca, NY, USA.
| |
Collapse
|
28
|
Zhang E, Wang J, Li Y, Huang L, Wang Y, Yang Q. Comparison of oral and nasal immunization with inactivated porcine epidemic diarrhea virus on intestinal immunity in piglets. Exp Ther Med 2020; 20:1596-1606. [PMID: 32742391 PMCID: PMC7388329 DOI: 10.3892/etm.2020.8828] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 02/20/2020] [Indexed: 12/11/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) has proven to be a major problem for the porcine industry worldwide. Conventional injectable vaccines induce effective systemic immune responses but are less effective in preventing PEDV at mucosal invasion sites, including the nasal or oral mucosa. Additionally, antigens delivered orally are easily degraded. Nasal immunization induces intestinal mucosal immune responses, which can aid in blocking viral invasion, and requires fewer antigen inoculation doses. Therefore, nasal immunizations are considered to be a potential approach to overcome viral infections. In the present study, nasal immunization of piglets was performed using inactivated PEDV combined with Bacillus subtilis as an immunopotentiator and the efficacy of nasal immunization was assessed. The results demonstrated that compared with oral immunization, piglets from the nasal immunization group exhibited higher levels of neutralizing antibodies (P<0.01) in the intestine, PEDV-specific immunoglobulin (Ig)G (P<0.01) in serum and PEDV-specific secretory IgA (SIgA) in saliva (P<0.01) and nasal secretions (P<0.01). An increased number of intestinal CD3+ T cells, IgA-secreting cells and intraepithelial lymphocytes (P<0.05) were also observed. Furthermore, the protein expression levels of interleukin-6 and interferon-γ, relative to the control PEDV infection, were also significantly elevated (P<0.05). The results of the present study indicate that nasal immunization is more effective at inducing the intestinal mucosal immune response, and provide new insights into a novel vaccination strategy that may be used to decrease the incidence of PEDV infections.
Collapse
Affiliation(s)
- En Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Jialu Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Yuchen Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Lulu Huang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Yongheng Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| | - Qian Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P.R. China
| |
Collapse
|
29
|
Cas MD, Roda G, Li F, Secundo F. Functional Lipids in Autoimmune Inflammatory Diseases. Int J Mol Sci 2020; 21:E3074. [PMID: 32349258 PMCID: PMC7246500 DOI: 10.3390/ijms21093074] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 12/27/2022] Open
Abstract
Lipids are apolar small molecules known not only as components of cell membranes but also, in recent literature, as modulators of different biological functions. Herein, we focused on the bioactive lipids that can influence the immune responses and inflammatory processes regulating vascular hyperreactivity, pain, leukocyte trafficking, and clearance. In the case of excessive pro-inflammatory lipid activity, these lipids also contribute to the transition from acute to chronic inflammation. Based on their biochemical function, these lipids can be divided into different families, including eicosanoids, specialized pro-resolving mediators, lysoglycerophospholipids, sphingolipids, and endocannabinoids. These bioactive lipids are involved in all phases of the inflammatory process and the pathophysiology of different chronic autoimmune diseases such as rheumatoid arthritis, multiple sclerosis, type-1 diabetes, and systemic lupus erythematosus.
Collapse
Affiliation(s)
- Michele Dei Cas
- Department of Health Sciences, Università degli Studi di Milano, 20142 Milan, Italy
| | - Gabriella Roda
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, 20133 Milan, Italy
| | - Feng Li
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China
| | - Francesco Secundo
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta”, Consiglio Nazionale delle Ricerche, 20131 Milan, Italy
| |
Collapse
|
30
|
Bogucka K, Pompaiah M, Marini F, Binder H, Harms G, Kaulich M, Klein M, Michel C, Radsak MP, Rosigkeit S, Grimminger P, Schild H, Rajalingam K. ERK3/MAPK6 controls IL-8 production and chemotaxis. eLife 2020; 9:52511. [PMID: 32314963 PMCID: PMC7192585 DOI: 10.7554/elife.52511] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 04/17/2020] [Indexed: 12/11/2022] Open
Abstract
ERK3 is a ubiquitously expressed member of the atypical mitogen activated protein kinases (MAPKs) and the physiological significance of its short half-life remains unclear. By employing gastrointestinal 3D organoids, we detect that ERK3 protein levels steadily decrease during epithelial differentiation. ERK3 is not required for 3D growth of human gastric epithelium. However, ERK3 is stabilized and activated in tumorigenic cells, but deteriorates over time in primary cells in response to lipopolysaccharide (LPS). ERK3 is necessary for production of several cellular factors including interleukin-8 (IL-8), in both, normal and tumorigenic cells. Particularly, ERK3 is critical for AP-1 signaling through its interaction and regulation of c-Jun protein. The secretome of ERK3-deficient cells is defective in chemotaxis of neutrophils and monocytes both in vitro and in vivo. Further, knockdown of ERK3 reduces metastatic potential of invasive breast cancer cells. We unveil an ERK3-mediated regulation of IL-8 and epithelial secretome for chemotaxis.
Collapse
Affiliation(s)
- Katarzyna Bogucka
- Cell Biology Unit, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Malvika Pompaiah
- Cell Biology Unit, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Federico Marini
- Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.,Center for Thrombosis and Hemostasis (CTH), University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Harald Binder
- Institute of Medical Biostatistics, Epidemiology and Informatics, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.,Institute of Medical Biometry and Statistics, Faculty of Medicine and Medical Center - University of Freiburg, Freiburg, Germany
| | - Gregory Harms
- Cell Biology Unit, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.,Departments of Biology and Physics, Wilkes University, Wilkes Barre, United States
| | - Manuel Kaulich
- Gene Editing Group, Institute of Biochemistry II, Goethe University, Frankfurt, Germany.,Frankfurt Cancer Institute, Frankfurt, Germany
| | - Matthias Klein
- Institute of Immunology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Christian Michel
- Department of Hematology, Medical Oncology, & Pneumology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Markus P Radsak
- Department of Hematology, Medical Oncology, & Pneumology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Sebastian Rosigkeit
- Cell Biology Unit, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Peter Grimminger
- Department of General, Visceral- and Transplant Surgery, University Medical Center, Mainz, Germany
| | - Hansjörg Schild
- Institute of Immunology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Krishnaraj Rajalingam
- Cell Biology Unit, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.,University Cancer Center Mainz, University Medical Center Mainz, Mainz, Germany
| |
Collapse
|
31
|
Fan L, Huang R, Wu C, Cao Y, Du T, Pu G, Wang H, Zhou W, Li P, Kim SW. Defatted Rice Bran Supplementation in Diets of Finishing Pigs: Effects on Physiological, Intestinal Barrier, and Oxidative Stress Parameters. Animals (Basel) 2020; 10:ani10030449. [PMID: 32182669 PMCID: PMC7143537 DOI: 10.3390/ani10030449] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 12/22/2022] Open
Abstract
Simple Summary Most studies on dietary fiber mainly focus on the digestibility of feed nutrients and microbial flora, etc. However, insufficient attention has been paid to the regulation of immune and oxidative stress of the intestinal tract by dietary fiber. This study investigated the effects of varying levels of defatted rice bran replacing corn on physiological, intestinal barrier, and oxidative stress parameters in finishing pigs. Based on the current findings, a high diet of rice bran will not only reduce the level of inflammatory factors in the peripheral blood of finishing pigs, but also enhance the healthy level of the colon through mucin2 and keap1-Nrf2 pathways. Our results can be used as reference for dietary rice bran to improve intestinal health in finishing pigs. Abstract Rice bran is a waste product with low cost and high fiber content, giving it an added advantage over corn and soybean meal, which have to be purchased and always at a relatively higher cost. Under the background of increased attention to sustainable agriculture, it is significant to find alternative uses for this byproduct. A total of 35 finishing pigs were allotted to five dietary treatments: a control group with basal diet and four experimental diets where corn was equivalently substituted by 7%, 14%, 21%, and 28% defatted rice bran (DFRB), respectively. With increasing levels of DFRB, the neutrophil to lymphocyte ratio (NLR) linearly decreased (p < 0.05). In the jejunum, the mRNA level of nuclear factor erythroid-2 related factor-2 (Nrf2) exhibited a quadratic response (p < 0.01) with incremental levels of DFRB. In the colon, the mRNA levels of mucin 2 (MUC2), Nrf2, and NAD(P)H: quinone oxidoreductase 1 (NQO1) were upregulated (linear, p < 0.05) and heme oxygenase-1 (HO-1) was upregulated (linear, p < 0.01). Overall, using DFRB to replace corn decreased the inflammatory biomarkers of serum and showed potential function in modulating the intestinal barrier by upregulating the mRNA expression levels of MUC2 and downregulating that of Nrf2, NQO1, and HO-1 in the colon.
Collapse
Affiliation(s)
- Lijuan Fan
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Ruihua Huang
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
- Industrial Technology System Integration Innovation Center of Jiangsu Modern Agriculture (PIG), Nanjing 210095, China
| | - Chengwu Wu
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Yang Cao
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Taoran Du
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Guang Pu
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Huan Wang
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
| | - Wuduo Zhou
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Industrial Technology System Integration Innovation Center of Jiangsu Modern Agriculture (PIG), Nanjing 210095, China
| | - Pinghua Li
- Institute of Swine Science, Nanjing Agricultural University, Nanjing 210095, China; (L.F.); (R.H.); (C.W.); (Y.C.); (T.D.); (G.P.); (H.W.); (W.Z.)
- Huaian Academy, Nanjing Agricultural University, Huaian 223003, China
- Industrial Technology System Integration Innovation Center of Jiangsu Modern Agriculture (PIG), Nanjing 210095, China
- Nanjing Agricultural University’s New Rural Research and Development Corporation of Huaian City, Huaian 223003, China
- Correspondence:
| | - Sung Woo Kim
- Department of Animal Science, North Carolina State University, Raleigh, NC 27695, USA;
| |
Collapse
|
32
|
Wang X, Bootsma H, Kroese F, Dijkstra G, Pringle S. Senescent Stem and Transient Amplifying Cells in Crohn's Disease Intestine. Inflamm Bowel Dis 2020; 26:e8-e9. [PMID: 31769481 PMCID: PMC6943680 DOI: 10.1093/ibd/izz295] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We demonstrate presence of senescent (p16+, p21+) epithelial cells in the stem and transient amplifying cell niches of the intestine in Crohn’s disease. This may explain why Crohn’s lesions recur in the same places.
Collapse
Affiliation(s)
- Xiaoyan Wang
- Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Hendrika Bootsma
- Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Frans Kroese
- Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Gerard Dijkstra
- Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Sarah Pringle
- Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| |
Collapse
|
33
|
Kou H, Fu Y, He Y, Jiang J, Gao X, Zhao H. Chronic lead exposure induces histopathological damage, microbiota dysbiosis and immune disorder in the cecum of female Japanese quails (Coturnix japonica). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 183:109588. [PMID: 31450035 DOI: 10.1016/j.ecoenv.2019.109588] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 08/15/2019] [Accepted: 08/18/2019] [Indexed: 06/10/2023]
Abstract
Lead (Pb) is one of the most hazardous metals to human and wildlife and it also has multiple negative impacts on birds. However, its influences on bird gut morphology and intestinal microbiota were still unclear. We used female Japanese quails (Coturnix japonica) to examine the effects of chronic lead exposure (0, 50 ppm and 1000 ppm) on cecal histology, microbial communities and immune function. The results showed 50 ppm lead exposure caused subtle damages of cecum cell structure. However, 1000 ppm lead exposure caused severe cecum histopathological changes characterized by mucosa abscission, Lieberkühn glands destruction and lymphocyte proliferation. Moreover, both lead concentrations induced ultrastructural damages featured by nucleus pyknosis, mitochondrial vacuolation and microvilli contraction. Meanwhile, microbial community structure, species diversity, taxonomic compositions and taxa abundance in the cecum were affected by lead exposure. Furthermore, the mRNA relative expression of immunity-related genes such as interleukin 2 (IL-2) and gamma interferon (IFN-γ) was significantly downregulated while that of interleukin 6 (IL-6), tumor necrosis factor α (TNF-α) and natural killer kappa B (NF-κB) was significantly upregulated in the cecum of 50 and 1000 ppm lead exposure groups. We concluded that lead exposure may cause gut health impairment of female Japanese quails by inducing cecal histopathological changes, microbiota dysbiosis and cecal immune disorder.
Collapse
Affiliation(s)
- Honghong Kou
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Yuchen Fu
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Yu He
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Junxia Jiang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Xuebin Gao
- Shaanxi Institute of Zoology, Xi'an, 710032, China
| | - Hongfeng Zhao
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China. ,cn
| |
Collapse
|
34
|
Deoxynivalenol Induces Intestinal Damage and Inflammatory Response through the Nuclear Factor-κB Signaling Pathway in Piglets. Toxins (Basel) 2019; 11:toxins11110663. [PMID: 31739564 PMCID: PMC6891563 DOI: 10.3390/toxins11110663] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/23/2019] [Accepted: 11/12/2019] [Indexed: 12/30/2022] Open
Abstract
Deoxynivalenol (DON) is highly toxic to animals and humans, but pigs are most sensitive to it. The porcine mucosal injury related mechanism of DON is not yet fully clarified. Here, we investigated DON-induced injury in the intestinal tissues of piglet. Thirty weanling piglets [(Duroc × Landrace) × Yorkshire] were randomly divided into three groups according to single factor experimental design (10 piglets each group). Piglets were fed a basal diet in the control group, while low and high dose groups were fed a DON diet (1300 and 2200 μg/kg, respectively) for 60 days. Scanning electron microscopy results indicated that the ultrastructure of intestinal epithelial cells in the DON-treated group was damaged. The distribution and optical density (OD) values of zonula occludens 1 (ZO-1) protein in the intestinal tissues of DON-treated groups were decreased. At higher DON dosage, interleukin (IL)-1β, IL-6, and tumor necrosis factor-α mRNA levels were elevated in the intestinal tissues. The mRNA and protein levels of NF-κB p65, IκB-α, IKKα/β, iNOS, and COX-2 in the small intestinal mucosa were abnormally altered with an increase in DON concentration. These results indicate that DON can persuade intestinal damage and inflammatory responses in piglets via the nuclear factor-κB signaling pathway.
Collapse
|
35
|
Development of a Gut-On-A-Chip Model for High Throughput Disease Modeling and Drug Discovery. Int J Mol Sci 2019; 20:ijms20225661. [PMID: 31726729 PMCID: PMC6888156 DOI: 10.3390/ijms20225661] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 11/07/2019] [Accepted: 11/08/2019] [Indexed: 12/13/2022] Open
Abstract
A common bottleneck in any drug development process is finding sufficiently accurate models that capture key aspects of disease development and progression. Conventional drug screening models often rely on simple 2D culture systems that fail to recapitulate the complexity of the organ situation. In this study, we show the application of a robust high throughput 3D gut-on-a-chip model for investigating hallmarks of inflammatory bowel disease (IBD). Using the OrganoPlate platform, we subjected enterocyte-like cells to an immune-relevant inflammatory trigger in order to recapitulate key events of IBD and to further investigate the suitability of this model for compound discovery and target validation activities. The induction of inflammatory conditions caused a loss of barrier function of the intestinal epithelium and its activation by increased cytokine production, two events observed in IBD physiopathology. More importantly, anti-inflammatory compound exposure prevented the loss of barrier function and the increased cytokine release. Furthermore, knockdown of key inflammatory regulators RELA and MYD88 through on-chip adenoviral shRNA transduction alleviated IBD phenotype by decreasing cytokine production. In summary, we demonstrate the routine use of a gut-on-a-chip platform for disease-specific aspects modeling. The approach can be used for larger scale disease modeling, target validation and drug discovery purposes.
Collapse
|
36
|
Strzępa A, Marcińska K, Majewska-Szczepanik M, Szczepanik M. Oral treatment with enrofloxacin creates anti-inflammatory environment that supports induction of tolerogenic dendritic cells. Int Immunopharmacol 2019; 77:105966. [PMID: 31679846 DOI: 10.1016/j.intimp.2019.105966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 10/04/2019] [Accepted: 10/05/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Oral enrofloxacin treatment altered the gut microbiome promoting anti-inflammatory bacteria. The dysbiosis promotes regulatory cell induction in the intestines and in the periphery, which suppresses contact sensitivity. Bacterial-derived signals promote regulatory cell induction both directly and indirectly by influencing the phenotype of dendritic cells (DC). METHODS Oral treatment with broad-spectrum antibiotic enrofloxacin was used to evaluate how gut flora perturbation shapes the immune response in the gut and the periphery. RESULTS Enrofloxacin-induced dysbiosis creates an anti-inflammatory environment characterized by increased IL-10 concentration in the gut lumen and tissues. The production of IFN-γ and IL-17A did not change. Oral enrofloxacin treatment skewed the profile of the immune response towards an anti-inflammatory phenotype locally in small intestinal Peyer's Patches (PP) and systematically in the spleen (SPL). Enrofloxacin administration changed immune response in PP by increasing TGF-β secretion from an increased percentage of TGF-β-producing. In the SPL, enrofloxacin treatment increased the secretion of TGF-β and IL-10 and decreased the secretion of IL-17A and IFN-γ. The shift in cytokine profile correlated with a higher percentage of latency-associated peptide and IL-10-producing cells and a decreased percentage of IFN-γ-producing T cells. This anti-inflammatory immune response in the PP and SPL promoted a higher frequency of tolerogenic DC. CONCLUSION Our data indicate that two-week enrofloxacin treatment induces dysbiosis, skews immune response towards an anti-inflammatory phenotype, and elevates secretion of TGF-β and IL-10 in the intestines and periphery. Additionally, we observed higher frequencies of tolerogenic DC, characterized by CD11b and IL-10 expression, which are known inducers of Treg cells.
Collapse
Affiliation(s)
- Anna Strzępa
- Department of Medical Biology, Faculty of Health Sciences, Jagiellonian University Medical College, ul. Kopernika 7, 31-034 Krakow, Poland
| | - Katarzyna Marcińska
- Department of Medical Biology, Faculty of Health Sciences, Jagiellonian University Medical College, ul. Kopernika 7, 31-034 Krakow, Poland
| | - Monika Majewska-Szczepanik
- Department of Medical Biology, Faculty of Health Sciences, Jagiellonian University Medical College, ul. Kopernika 7, 31-034 Krakow, Poland
| | - Marian Szczepanik
- Department of Medical Biology, Faculty of Health Sciences, Jagiellonian University Medical College, ul. Kopernika 7, 31-034 Krakow, Poland.
| |
Collapse
|
37
|
Roh TT, Chen Y, Paul HT, Guo C, Kaplan DL. 3D bioengineered tissue model of the large intestine to study inflammatory bowel disease. Biomaterials 2019; 225:119517. [PMID: 31580968 DOI: 10.1016/j.biomaterials.2019.119517] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 09/21/2019] [Indexed: 12/14/2022]
Abstract
An in vitro model of intestinal epithelium with an immune component was bioengineered to mimic immunologic responses seen in inflammatory bowel disease. While intestinal immune phenomena can be modeled in transwells and 2D culture systems, 3D tissue models improve physiological relevance by providing a 3D substrate which enable migration of macrophages towards the epithelium. An intestinal epithelial layer comprised of non-transformed human colon organoid cells and a subepithelial layer laden with monocyte-derived macrophages was bioengineered to mimic native intestinal mucosa cell organization using spongy biomaterial scaffolds. Confluent monolayers with microvilli, a mucus layer, and infiltration of macrophages to the basal side of the epithelium were observed. Inflammation, induced by E. coli O111:B4 lipopolysaccharide and interferon γ resulted in morphological changes to the epithelium, resulting in ball-like structures, decreased epithelial coverage, and increased migration of macrophages to the epithelium. Analysis of cytokines present in the inflamed tissue model demonstrated significantly upregulated secretion of pro-inflammatory cytokines that are often associated with active inflammatory bowel disease, including CXCL10, IL-1β, IL-6, MCP-2, and MIP-1β. The macrophage layer enhanced epithelial and biochemical responses to inflammatory insult, and this new tissue system may be useful to study and develop potential therapies for inflammatory bowel disease.
Collapse
Affiliation(s)
- Terrence T Roh
- Tufts University, Department of Biomedical Engineering, 4 Colby St. Medford, MA, 02155, USA
| | - Ying Chen
- Tufts University, Department of Biomedical Engineering, 4 Colby St. Medford, MA, 02155, USA
| | - Harry T Paul
- Tufts University, Department of Biomedical Engineering, 4 Colby St. Medford, MA, 02155, USA
| | - Chengchen Guo
- Tufts University, Department of Biomedical Engineering, 4 Colby St. Medford, MA, 02155, USA
| | - David L Kaplan
- Tufts University, Department of Biomedical Engineering, 4 Colby St. Medford, MA, 02155, USA.
| |
Collapse
|
38
|
Avellar MCW, Ribeiro CM, Dias-da-Silva MR, Silva EJR. In search of new paradigms for epididymal health and disease: innate immunity, inflammatory mediators, and steroid hormones. Andrology 2019; 7:690-702. [PMID: 31207127 DOI: 10.1111/andr.12654] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 04/22/2019] [Accepted: 04/29/2019] [Indexed: 02/07/2023]
Abstract
The primary job of the epididymis is to mature and protect the luminally transiting spermatozoa. Mounting evidence is showing that innate immune components [including Toll-like receptors (TLRs) and antimicrobial proteins, among which are β-defensins] and inflammatory mediators, under the primary influence of androgens, participate in the cellular and molecular processes that define this tissue. Here, we present an overview of the contributions of these signaling pathway components during epididymal homeostasis and discuss the hypotheses as to their involvement in epididymitis, the most common urological inflammatory condition in men, frequently impairing their fertility. Drawing primarily from rodent models, we also focus on how the distribution and functional expression of innate immune components are differentially regulated in the prenatal developing epididymis, providing new insights into the disruption of these signaling pathways throughout the lifespan. Male infertility is caused by a variety of conditions, such as congenital malformations, genetic and endocrine disorders, exposure to environmental toxicants, and inflammatory/infectious conditions. More than one-third of infertile men with an idiopathic condition cannot currently be adequately diagnosed. Thinking about the innate immunity and inflammation context of the epididymis may provide new insights and directions as to how these systems contribute to male fertility, as well as also uncover urological and andrological outcomes that may aid clinicians in diagnosing and preventing epididymal pathologies.
Collapse
Affiliation(s)
- M C W Avellar
- Department of Pharmacology, Universidade Federal de São Paulo - Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - C M Ribeiro
- Department of Pharmacology, Universidade Federal de São Paulo - Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - M R Dias-da-Silva
- Department of Medicine, Universidade Federal de São Paulo - Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - E J R Silva
- Department of Pharmacology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Botucatu, SP, Brazil
| |
Collapse
|
39
|
Rao MC. Physiology of Electrolyte Transport in the Gut: Implications for Disease. Compr Physiol 2019; 9:947-1023. [PMID: 31187895 DOI: 10.1002/cphy.c180011] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We now have an increased understanding of the genetics, cell biology, and physiology of electrolyte transport processes in the mammalian intestine, due to the availability of sophisticated methodologies ranging from genome wide association studies to CRISPR-CAS technology, stem cell-derived organoids, 3D microscopy, electron cryomicroscopy, single cell RNA sequencing, transgenic methodologies, and tools to manipulate cellular processes at a molecular level. This knowledge has simultaneously underscored the complexity of biological systems and the interdependence of multiple regulatory systems. In addition to the plethora of mammalian neurohumoral factors and their cross talk, advances in pyrosequencing and metagenomic analyses have highlighted the relevance of the microbiome to intestinal regulation. This article provides an overview of our current understanding of electrolyte transport processes in the small and large intestine, their regulation in health and how dysregulation at multiple levels can result in disease. Intestinal electrolyte transport is a balance of ion secretory and ion absorptive processes, all exquisitely dependent on the basolateral Na+ /K+ ATPase; when this balance goes awry, it can result in diarrhea or in constipation. The key transporters involved in secretion are the apical membrane Cl- channels and the basolateral Na+ -K+ -2Cl- cotransporter, NKCC1 and K+ channels. Absorption chiefly involves apical membrane Na+ /H+ exchangers and Cl- /HCO3 - exchangers in the small intestine and proximal colon and Na+ channels in the distal colon. Key examples of our current understanding of infectious, inflammatory, and genetic diarrheal diseases and of constipation are provided. © 2019 American Physiological Society. Compr Physiol 9:947-1023, 2019.
Collapse
Affiliation(s)
- Mrinalini C Rao
- Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, Illinois, USA
| |
Collapse
|
40
|
Melia JMP, Lin R, Xavier RJ, Thompson RB, Fu D, Wan F, Sears CL, Donowitz M. Induction of the metal transporter ZIP8 by interferon gamma in intestinal epithelial cells: Potential role of metal dyshomeostasis in Crohn's disease. Biochem Biophys Res Commun 2019; 515:325-331. [PMID: 31151823 DOI: 10.1016/j.bbrc.2019.05.137] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 05/22/2019] [Indexed: 01/14/2023]
Abstract
Transition metals are required for intestinal homeostasis and provide essential nutrients for the resident microbiota. Abnormalities in metal homeostasis are common in Crohn's disease (CD), but remain poorly defined and causes appear multifactorial. There has been renewed interest in understanding these mechanisms with the discovery of an association between a coding variant in SLC39A8 (rs13107325; ZIP8 A391T) and increased CD risk. SLC39A8 encodes the protein ZIP8, a metal transporter that is induced under inflammatory stimuli; however, studies of its gut-specific functions are lacking. Here, we show that SLC39A8 mRNA is differentially expressed in active CD with a high positive correlation with markers of disease severity, including CXCL8, TNFα, IFNγ, and calprotectin. SLC39A8 expression exhibits a negative correlation with SLC39A4 and SLC39A5, two key zinc importers in absorptive enterocytes, and a lack of correlation with two manganese transporters, SLC39A14 and SLC11A2. Immunohistochemistry demonstrates ZIP8 expression in intestinal epithelial cells and immune cells of the lamina propria. Patients with CD exhibit variable patterns of ZIP8 subcellular localization within IECs. In ileal enteroids, SLC39A8 was induced by IFNγ and IFNγ + TNFα, but not by TNFα alone, independent of NF-κB activation. IFNγ also down-regulated SLC39A5. To explore the functional implications of disease-associated genetic variation, in over-expression experiments in HEK293A cells, ZIP8 A391T was associated with increased TNFα-induced NF-κB activation, consistent with a loss of negative regulation. Taken together, these results suggest a potential role for ZIP8 in intestinal inflammation, induced by IFNγ in the intestinal epithelial compartment, and that perturbations in negative regulation of NF-κB by ZIP8 A391T may contribute to CD pathogenesis.
Collapse
Affiliation(s)
- Joanna M P Melia
- Department of Medicine, Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
| | - Ruxian Lin
- Department of Medicine, Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Ramnik J Xavier
- Gastrointestinal Unit and Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Richard B Thompson
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Dax Fu
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Fengyi Wan
- Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, 21205, USA; Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Cynthia L Sears
- Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, 21205, USA; Department of Medicine, Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Mark Donowitz
- Department of Medicine, Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA; Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| |
Collapse
|
41
|
Weishaar IM, Young RS, Wiles BM, McGee DW. The Effect of IL-26 on TNF-α-Induced CXCL8 Responses by Colonic Epithelial Cell Lines. Immunol Invest 2019; 48:822-834. [PMID: 30917710 DOI: 10.1080/08820139.2019.1594247] [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: 10/27/2022]
Abstract
Th17 cells of the intestine and colon can produce several important cytokines during mucosal inflammation. However, few studies have focused on the role of IL-26 in intestinal inflammations. Colonic epithelial cells express receptors for IL-26, and this cytokine has been shown to induce the HT-29 colonic epithelial cell line to produce the chemokine CXCL8. However, epithelial cells would function in a cytokine network environment during mucosal inflammation and any effect of IL-26 on colonic epithelial cell chemokine responses could be affected by the presence of other potent pro-inflammatory cytokines like TNF-α and IL-1. Therefore, we investigated the effect of IL-26 with TNF-α or IL-1 on colonic epithelial cell line secretion of CXCL8. IL-26 alone had no effect on HT-29 or DLD1 cell line CXCL8 secretion. Yet, IL-26 was found to significantly enhance TNF-α-induced, but not IL-1-induced, CXCL8 secretion, but only at high levels of TNF-α. Similar results were seen with DLD1 cells. IL-26 did not enhance TNF-α-induced CXCL8 mRNA levels and did not affect TNF-α-induced IκBα phosphorylation or degradation. However, signaling through ERK and p38 MAPK were determined to be involved in the enhancing effect of IL-26 on the TNF-α-induced CXCL8 secretion, perhaps through known post-translational effects. These results suggest that the role of IL-26 in intestinal inflammation may be limited to enhancing CXCL8 secretion in the presence high levels of TNF-α, such as may occur in inflammatory bowel disease. Abbreviations: DMEM, Dulbecco's Modified Eagle's Medium; GAPDH, glyceraldehyde-3-phosphate dehydrogenase; IBD, inflammatory bowel disease; IL, interleukin; ITS, insulin, transferrin, selenium; TBS, Tris buffered saline; TNF, tumor necrosis factor.
Collapse
Affiliation(s)
- Isabelle M Weishaar
- Department of Biological Sciences, Binghamton University (SUNY) , Binghamton , New York USA
| | - Rebecca S Young
- Department of Biological Sciences, Binghamton University (SUNY) , Binghamton , New York USA
| | - Brody M Wiles
- Department of Biological Sciences, Binghamton University (SUNY) , Binghamton , New York USA
| | - Dennis W McGee
- Department of Biological Sciences, Binghamton University (SUNY) , Binghamton , New York USA
| |
Collapse
|
42
|
Popović N, Djokić J, Brdarić E, Dinić M, Terzić-Vidojević A, Golić N, Veljović K. The Influence of Heat-Killed Enterococcus faecium BGPAS1-3 on the Tight Junction Protein Expression and Immune Function in Differentiated Caco-2 Cells Infected With Listeria monocytogenes ATCC 19111. Front Microbiol 2019; 10:412. [PMID: 30891021 PMCID: PMC6411766 DOI: 10.3389/fmicb.2019.00412] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 02/18/2019] [Indexed: 12/14/2022] Open
Abstract
Listeria monocytogenes, the common foodborne pathogenic bacteria species, compromises the intestinal epithelial barrier, leading to development of the listeriosis, a severe disease especially among immunocompromised individuals. L. monocytogenes infection usually requires antibiotic treatment, however, excessive use of antibiotics promotes emergence of antibiotic resistance and the destruction of gut microbiota. Probiotics, including lactic acid bacteria (LAB), have been repeatedly proven as an alternative approach for the treatment of various infections. We have analyzed the potential of Enterococcus faecium BGPAS1-3, a dairy isolate exhibiting strong direct antilisterial effect, to modulate the response of differentiated Caco-2 intestinal epithelial cells to L. monocytogenes ATCC 19111 infection. We showed that the molecule with antilisterial effect is a bacterial cell-wall protein that is highly resistant to the high-temperature treatment. When we tested the antilisterial potential of heat-killed BGPAS1-3, we found that it could prevent tight junction disruption in differentiated Caco-2 monolayer infected with L. monocytogenes ATCC 19111, induce antilisterial host response mechanisms, and stimulate the production of protective TGF-β in intestinal epithelial cells. We also showed that the modulation of MyD88 dependent TLR2 and TLR4 pathways by BGPAS1-3 are involved in host response against L. monocytogenes ATCC 19111. Since heat-killed BGPAS1-3 possess strong antilisterial effects, such postbiotic could be used as a controllable and safe therapeutic.
Collapse
Affiliation(s)
| | - Jelena Djokić
- Laboratory for Molecular Microbiology, Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | | | | | | | | | | |
Collapse
|
43
|
Homoectoine Protects Against Colitis by Preventing a Claudin Switch in Epithelial Tight Junctions. Dig Dis Sci 2019; 64:409-420. [PMID: 30269272 DOI: 10.1007/s10620-018-5309-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 09/26/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Inflammatory bowel diseases (IBD) are multifactorial disorders affecting millions of people worldwide with alarmingly increasing incidences every year. Dysfunction of the intestinal epithelial barrier is associated with IBD pathogenesis, and therapies include anti-inflammatory drugs that enhance intestinal barrier function. However, these drugs often have adverse side effects thus warranting the search for alternatives. Compatible solutes such as bacterial ectoines stabilize cell membranes and proteins. AIM To unravel whether ectoine (1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylic acid) and homoectoine (4,5,6,7-tetrahydro-2-methyl-1H-(1,3)-diazepine-4-carboxylic acid), a synthetic derivative of ectoine, have beneficial effects during dextran sulfate sodium (DSS)-induced colitis in mice. METHODS/RESULTS We found that the disease activity index was significantly reduced by both ectoines. DSS-induced edema formation, epithelial permeability, leukocyte recruitment and tissue damage were reduced by ectoine and homoectoine, with the latter having stronger effects. Interestingly, the claudin switch usually observed during colitis (decreased expression of claudin-1 and increased expression of the leaky claudin-2) was completely prevented by homoectoine, whereas ectoine only reduced claudin-2 expression. Concomitantly, only homoectoine ameliorated the drop in transepithelial electrical resistance induced by IFN-γ and TNF-α in Caco-2 cells. Both ectoines inhibited loss of ZO-1 and occludin and prevented IFN-γ/TNF-α-induced increased paracellular flux of 4 kDa FITC-dextran in vitro. Moreover, both ectoines reduced expression of pro-inflammatory cytokines and oxidative stress during colitis. CONCLUSION While both ectoine and homoectoine have protective effects on the epithelial barrier during inflammation, only homoectoine completely prevented the inflammatory claudin switch in tight junctions. Thus, homoectoine may serve as diet supplement in IBD patients to reach or extend remission.
Collapse
|
44
|
Chesné J, Cardoso V, Veiga-Fernandes H. Neuro-immune regulation of mucosal physiology. Mucosal Immunol 2019; 12:10-20. [PMID: 30089849 DOI: 10.1038/s41385-018-0063-y] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/15/2018] [Accepted: 06/25/2018] [Indexed: 02/07/2023]
Abstract
Mucosal barriers constitute major body surfaces that are in constant contact with the external environment. Mucosal sites are densely populated by a myriad of distinct neurons and immune cell types that sense, integrate and respond to multiple environmental cues. In the recent past, neuro-immune interactions have been reported to play central roles in mucosal health and disease, including chronic inflammatory conditions, allergy and infectious diseases. Discrete neuro-immune cell units act as building blocks of this bidirectional multi-tissue cross-talk, ensuring mucosal tissue health and integrity. Herein, we will focus on reciprocal neuro-immune interactions in the airways and intestine. Such neuro-immune cross-talk maximizes sensing and integration of environmental aggressions, which can be considered an important paradigm shift in our current views of mucosal physiology and immune regulation.
Collapse
Affiliation(s)
- Julie Chesné
- Champalimaud Research, Champalimaud Centre for the Unknown, 1400-038, Lisboa, Portugal
| | - Vânia Cardoso
- Champalimaud Research, Champalimaud Centre for the Unknown, 1400-038, Lisboa, Portugal
| | | |
Collapse
|
45
|
Braga RLL, Pereira ACM, Ferreira AF, Rosa ACDP, Pereira-Manfro WF. INTRACELLULAR PERSISTENCE OF ENTEROAGGREGATIVE ESCHERICHIA COLI INDUCES A PROINFLAMMATORY CYTOKINES SECRETION IN INTESTINAL EPITHELIAL T84 CELLS. ARQUIVOS DE GASTROENTEROLOGIA 2018; 55:133-137. [PMID: 30043861 DOI: 10.1590/s0004-2803.201800000-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 02/07/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND The competence of enteroaggregative Escherichia coli (EAEC) to adhere to the intestinal epithelium of the host is a key role to the colonization and disease development. The virulence genes are crucial for EAEC pathogenicity during adherence, internalization and persistence in the host. The overwhelming majority of antigen encounters in a host occurs on the intestine surface, which is considered a part of innate mucosal immunity. Intestinal epithelial cells (IECs) can be activated by microorganisms and induce an immune response. OBJECTIVE The present study investigated the interaction of invasive EAEC strains with T84 intestinal epithelial cell line in respect to bacterial invasiveness, persistence and cytokines production. METHODS We evaluated intracellular persistence of invasive EAEC strains (H92/3, I49/3 and the prototype 042) and production of cytokines by sandwich ELISA in T84 cells upon 24 hours of infection. RESULTS The survival rates of the prototype 042 was 0.5x103 CFU/mL while survival of I49/3 and H92/3 reached 3.2x103 CFU/mL and 1.4x103 CFU/mL, respectively. Infection with all EAEC strains tested induced significant amounts of IL-8, IL-6 and TNF-α compared to uninfected T84 cells. CONCLUSION These data showed that infection by invasive EAEC induce a proinflammatory immune response in intestinal epithelial T84 cells.
Collapse
Affiliation(s)
- Ricardo Luís Lopes Braga
- Universidade do Estado do Rio de Janeiro, Faculdade de Ciências Médicas, Departamento de Microbiologia, Imunologia e Parasitologia, Rio de Janeiro, RJ, Brasil
| | - Ana Claudia Machado Pereira
- Universidade do Estado do Rio de Janeiro, Faculdade de Ciências Médicas, Departamento de Microbiologia, Imunologia e Parasitologia, Rio de Janeiro, RJ, Brasil
| | - Andréa Fonseca Ferreira
- Universidade do Estado do Rio de Janeiro, Faculdade de Ciências Médicas, Departamento de Microbiologia, Imunologia e Parasitologia, Rio de Janeiro, RJ, Brasil
| | - Ana Cláudia de Paula Rosa
- Universidade do Estado do Rio de Janeiro, Faculdade de Ciências Médicas, Departamento de Microbiologia, Imunologia e Parasitologia, Rio de Janeiro, RJ, Brasil
| | - Wânia Ferraz Pereira-Manfro
- Universidade do Estado do Rio de Janeiro, Faculdade de Ciências Médicas, Departamento de Microbiologia, Imunologia e Parasitologia, Rio de Janeiro, RJ, Brasil
| |
Collapse
|
46
|
Onyiah JC, Schaefer REM, Colgan SP. A Central Role for Heme Oxygenase-1 in the Control of Intestinal Epithelial Chemokine Expression. J Innate Immun 2018; 10:228-238. [PMID: 29791903 DOI: 10.1159/000488914] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 03/30/2018] [Indexed: 12/15/2022] Open
Abstract
In mucosal inflammatory disorders, the protective influence of heme oxygenase-1 (HO-1) and its metabolic byproducts, carbon monoxide (CO) and biliverdin, is a topic of significant interest. Mechanisms under investigation include the regulation of macrophage function and mucosal cytokine expression. While there is an increasing recognition of the importance of epithelial-derived factors in the maintenance of intestinal mucosal homeostasis, the contribution of intestinal epithelial cell (IEC) HO-1 on inflammatory responses has not previously been investigated. We examined the influence of modulating HO-1 expression on the inflammatory response of human IECs. Engineered deficiency of HO-1 in Caco-2 and T84 IECs led to increased proinflammatory chemokine expression in response to pathogenic bacteria and inflammatory cytokine stimulation. Crosstalk with activated leukocytes also led to increased chemokine expression in HO-1-deficient cells in an IL-1β dependent manner. Treatment of Caco-2 cells with a pharmacological inducer of HO-1 led to the inhibition of chemokine expression. Mechanistic studies suggest that HO-1 and HO-1-related transcription factors, but not HO-1 metabolic products, are partly responsible for the influence of HO-1 on chemokine expression. In conclusion, our data identify HO-1 as a central regulator of IEC chemokine expression that may contribute to homeo-stasis in the intestinal mucosa.
Collapse
|
47
|
Moon C, Stupp GS, Su AI, Wolan DW. Metaproteomics of Colonic Microbiota Unveils Discrete Protein Functions among Colitic Mice and Control Groups. Proteomics 2018; 18:10.1002/pmic.201700391. [PMID: 29319931 PMCID: PMC5921860 DOI: 10.1002/pmic.201700391] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 12/19/2017] [Indexed: 12/14/2022]
Abstract
Metaproteomics can greatly assist established high-throughput sequencing methodologies to provide systems biological insights into the alterations of microbial protein functionalities correlated with disease-associated dysbiosis of the intestinal microbiota. Here, the authors utilize the well-characterized murine T cell transfer model of colitis to find specific changes within the intestinal luminal proteome associated with inflammation. MS proteomic analysis of colonic samples permitted the identification of ≈10 000-12 000 unique peptides that corresponded to 5610 protein clusters identified across three groups, including the colitic Rag1-/- T cell recipients, isogenic Rag1-/- controls, and wild-type mice. The authors demonstrate that the colitic mice exhibited a significant increase in Proteobacteria and Verrucomicrobia and show that such alterations in the microbial communities contributed to the enrichment of specific proteins with transcription and translation gene ontology terms. In combination with 16S sequencing, the authors' metaproteomics-based microbiome studies provide a foundation for assessing alterations in intestinal luminal protein functionalities in a robust and well-characterized mouse model of colitis, and set the stage for future studies to further explore the functional mechanisms of altered protein functionalities associated with dysbiosis and inflammation.
Collapse
Affiliation(s)
- Clara Moon
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Gregory S Stupp
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, USA
| | - Andrew I Su
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, USA
| | - Dennis W Wolan
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| |
Collapse
|
48
|
Ulrich RJ, Santhosh K, Mogle JA, Young VB, Rao K. Is Clostridium difficile infection a risk factor for subsequent bloodstream infection? Anaerobe 2017; 48:27-33. [PMID: 28669864 PMCID: PMC5711547 DOI: 10.1016/j.anaerobe.2017.06.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 06/22/2017] [Accepted: 06/29/2017] [Indexed: 01/05/2023]
Abstract
BACKGROUND Clostridium difficile infection (CDI) is a common nosocomial diarrheal illness increasingly associated with mortality in United States. The underlying factors and mechanisms behind the recent increases in morbidity from CDI have not been fully elucidated. Murine models suggest a mucosal barrier breakdown leads to bacterial translocation and subsequent bloodstream infection (BSI). This study tests the hypothesis that CDI is associated with subsequent BSI in humans. METHODS We conducted a retrospective cohort study on 1132 inpatients hospitalized >72 h with available stool test results for toxigenic C. difficile. The primary outcome was BSI following CDI. Secondary outcomes included 30-day mortality, colectomy, readmission, and ICU admission. Unadjusted and adjusted logistic regression models were developed. RESULTS CDI occurred in 570 of 1132 patients (50.4%). BSI occurred in 86 (7.6%) patients. Enterococcus (14%) and Klebsiella (14%) species were the most common organisms. Patients with BSI had higher comorbidity scores and were more likely to be male, on immunosuppression, critically ill, and have a central venous catheter in place. Of the patients with BSI, 36 (42%) had CDI. CDI was not associated with subsequent BSI (OR 0.69; 95% CI 0.44-1.08; P = 0.103) in unadjusted analysis. In multivariable modeling, CDI appeared protective against subsequent BSI (OR 0.57; 95% CI 0.34-0.96; P = 0.036). Interaction modeling suggests a complicated relationship among CDI, BSI, antibiotic exposure, and central venous catheter use. CONCLUSIONS In this cohort of inpatients that underwent testing for CDI, CDI was not a risk factor for developing subsequent BSI.
Collapse
Affiliation(s)
- Robert J Ulrich
- Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA; Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI 48105, USA.
| | - Kavitha Santhosh
- Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA; Division of Infectious Diseases, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA
| | - Jill A Mogle
- Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA; Division of Infectious Diseases, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA
| | - Vincent B Young
- Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA; Division of Infectious Diseases, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA; Department of Microbiology and Immunology, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA
| | - Krishna Rao
- Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA; Division of Infectious Diseases, University of Michigan School of Medicine, Ann Arbor, MI 48109, USA; Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI 48105, USA.
| |
Collapse
|
49
|
Young RS, Wiles BM, McGee DW. IL-22 Enhances TNF-α- and IL-1-Induced CXCL8 Responses by Intestinal Epithelial Cell Lines. Inflammation 2017; 40:1726-1734. [PMID: 28656529 PMCID: PMC5711566 DOI: 10.1007/s10753-017-0614-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
IL-22 is known to induce intestinal epithelial cells (IECs) to produce the chemokine CXCL8. However, IECs exist in a cytokine network during mucosal inflammation, such that IL-22 must act in concert with potent pro-inflammatory cytokines like TNF-α and IL-1. Our studies show that IL-22 alone increased CXCL8 secretion from HT-29 cells, but the levels were minimal compared to that of the cells treated with TNF-α or IL-1 only. More significantly, co-stimulation with IL-22 and TNF-α enhanced both CXCL8 secretion and mRNA levels well over that of TNF-α stimulation alone. A similar enhancing effect was seen with IL-22- and IL-1-stimulated CXCL8 secretion. The enhancing effect of IL-22 on TNF-α-induced CXCL8 secretion was then determined to require the p38 MAPK, but not STAT1/3, PI3K, Akt, c-Jun N-terminal kinase, ERK, or IκBα. These experiments indicate that more significant effect of IL-22 on IECs responses may not be in inducing CXCL8 by itself, but in enhancing TNF-α- and IL-1-induced CXCL8 secretion to augment the contribution of IECs to local inflammatory responses.
Collapse
Affiliation(s)
- Rebecca S Young
- Department of Biological Sciences, Binghamton University (SUNY), Binghamton, NY, 13902-6000, USA
| | - Brody M Wiles
- Department of Biological Sciences, Binghamton University (SUNY), Binghamton, NY, 13902-6000, USA
| | - Dennis W McGee
- Department of Biological Sciences, Binghamton University (SUNY), Binghamton, NY, 13902-6000, USA.
| |
Collapse
|
50
|
Lechuga S, Ivanov AI. Disruption of the epithelial barrier during intestinal inflammation: Quest for new molecules and mechanisms. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017; 1864:1183-1194. [PMID: 28322932 DOI: 10.1016/j.bbamcr.2017.03.007] [Citation(s) in RCA: 174] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 03/13/2017] [Accepted: 03/15/2017] [Indexed: 02/06/2023]
Abstract
The intestinal epithelium forms a key protective barrier that separates internal organs from the harmful environment of the gut lumen. Increased permeability of the gut barrier is a common manifestation of different inflammatory disorders contributing to the severity of disease. Barrier permeability is controlled by epithelial adherens junctions and tight junctions. Junctional assembly and integrity depend on fundamental homeostatic processes such as cell differentiation, rearrangements of the cytoskeleton, and vesicle trafficking. Alterations of intestinal epithelial homeostasis during mucosal inflammation may impair structure and remodeling of apical junctions, resulting in increased permeability of the gut barrier. In this review, we summarize recent advances in our understanding of how altered epithelial homeostasis affects the structure and function of adherens junctions and tight junctions in the inflamed gut. Specifically, we focus on the transcription reprogramming of the cell, alterations in the actin cytoskeleton, and junctional endocytosis and exocytosis. We pay special attention to knockout mouse model studies and discuss the relevance of these mechanisms to human gastrointestinal disorders.
Collapse
Affiliation(s)
- Susana Lechuga
- Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Andrei I Ivanov
- Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, VA 23298, USA; Virginia Institute of Molecular Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA; Massey Cancer Center, Virginia Commonwealth University, Richmond, VA 23298, USA.
| |
Collapse
|