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Shao H, Zhang X, Ruan L, Li J, Chen F, Guo L, Zhu J. Methane suppressed dendritic cells activation in trinitrobenzene sulfonic acid induced colitis. Int Immunopharmacol 2020; 82:106360. [PMID: 32143009 DOI: 10.1016/j.intimp.2020.106360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 02/26/2020] [Accepted: 02/26/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Han Shao
- Department of Intensive Care Unit, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221003, China
| | - Xu Zhang
- Department of Anesthesiology, Xuzhou Central Hospital, Xuzhou 221009, China
| | - Linxing Ruan
- Department of Anesthesiology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Jinbao Li
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai 200080, China
| | - Feng Chen
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai 200080, China
| | - Long Guo
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai 200080, China.
| | - Jiali Zhu
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai 200080, China.
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Matsui F, Inaba M, Uchida K, Nishio A, Fukui T, Yoshimura H, Satake A, Yoshioka K, Nomura S, Okazaki K. Induction of PIR-A/B + DCs in the in vitro inflammatory condition and their immunoregulatory function. J Gastroenterol 2018; 53:1131-1141. [PMID: 29508072 DOI: 10.1007/s00535-018-1447-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 02/20/2018] [Indexed: 02/04/2023]
Abstract
BACKGROUND Dendritic cells (DCs), primary antigen-presenting cells, are now well known as an immunoregulator of many aspects of immune responses including inflammatory bowel diseases (IBDs) such as Crohn's disease and ulcerative colitis. We have reported that PIR-A/Bhigh cDCs (conventional DCs) appeared in dextran sodium sulfate (DSS)-induced colitis and serve as a negative immunoregulator in an animal model of IBD. The immunoregulatory role of PIR-A/B+ cDCs was confirmed in both an in vitro culture system and an in vivo transfer experiment. Here, we have investigated the differentiation process of PIR-A/B+ cDCs in an in vitro inflammatory environment and examined their functions. METHODS cDCs were isolated from the large intestinal lamina propria from C57BL/6 mice and cultured in an inflammatory environment (IL-1, IL-6, TNFα, and LPS). The appearance of PIR-A/B+ cDCs was determined after 24 h, and the in vitro-induced PIR-A/B+ cDCs were functionally and genetically examined. RESULTS PIR-A/B+ cDCs were detected after a 24-h culture only in the inflammatory environment, and the cells acted as a negative immunoregulator when examined in an allogenic mixed leukocyte reaction (MLR). The message level of IL-27 was highly upregulated in PIR-A/B+ cDCs, while that of high mobility group box 1 protein (HMGB1) was downregulated in these cells. This was well in accordance with the fact that PIR-A/B+ cDCs showed a suppressive function against activated T cells. We found that PIR-A/B+ cDCs produced IL-27, as verified by an ELISA assay, and that the inhibitory effect by PIR-A/B+ cDCs was, at least partially, due to IL-27. Furthermore, CD85d+ cells, a human counterpart of mouse PIR-A/B+ cDCs, were found in the lamina propria of the colon of the patients with ulcerative colitis, but not in the similar part of the non-inflammatory area of colon specimens from patients with colon cancer. CONCLUSIONS PIR-A/B+ cDCs induced in an in vitro inflammatory environment model showed a suppressive function against activated T cells by producing an inhibitory cytokine.
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Affiliation(s)
- Fumi Matsui
- Division of Gastroenterology and Hepatology, The Third Department of Internal Medicine, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, 573-1191, Japan
| | - Muneo Inaba
- First Department of Internal Medicine, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, Japan
| | - Kazushige Uchida
- Division of Gastroenterology and Hepatology, The Third Department of Internal Medicine, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, 573-1191, Japan
| | - Akiyoshi Nishio
- Division of Gastroenterology and Hepatology, The Third Department of Internal Medicine, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, 573-1191, Japan
| | - Toshiro Fukui
- Division of Gastroenterology and Hepatology, The Third Department of Internal Medicine, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, 573-1191, Japan
| | - Hideaki Yoshimura
- First Department of Internal Medicine, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, Japan
| | - Atsushi Satake
- First Department of Internal Medicine, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, Japan
| | - Kazuhiko Yoshioka
- Gastrointestinal Surgery, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, Japan
| | - Shosaku Nomura
- First Department of Internal Medicine, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, Japan
| | - Kazuichi Okazaki
- Division of Gastroenterology and Hepatology, The Third Department of Internal Medicine, Kansai Medical University, 2-5-1, Shinmachi, Hirakata, Osaka, 573-1191, Japan.
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Zhao HM, Xu R, Huang XY, Cheng SM, Huang MF, Yue HY, Wang X, Zou Y, Lu AP, Liu DY. Curcumin Suppressed Activation of Dendritic Cells via JAK/STAT/SOCS Signal in Mice with Experimental Colitis. Front Pharmacol 2016; 7:455. [PMID: 27932984 PMCID: PMC5122716 DOI: 10.3389/fphar.2016.00455] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Accepted: 11/14/2016] [Indexed: 12/21/2022] Open
Abstract
Dendritic cells (DCs) play a pivotal role as initiators in the pathogenesis of inflammatory bowel disease and are regulated by the JAK/STAT/SOCS signaling pathway. As a potent anti-inflammatory compound, curcumin represents a viable treatment alternative or adjunctive therapy in the management of chronic inflammatory bowel disease (IBD). The mechanism of curcumin treated IBD on DCs is not completely understood. In the present study, we explored the mechanism of curcumin treated experimental colitis by observing activation of DCs via JAK/STAT/SOCS signaling pathway in colitis mice. Experimental colitis was induced by 2, 4, 6-trinitrobenzene sulfonic acid. After 7 days treatment with curcumin, its therapeutic effect was verified by decreased colonic weight, histological scores, and remitting pathological injury. Meanwhile, the levels of major histocompatibility complex class II and DC costimulatory molecules (CD83, CD28, B7-DC, CD40, CD40 L, and TLR2) were inhibited and followed the up-regulated levels of IL-4, IL-10, and IFN-γ, and down-regulated GM-CSF, IL-12p70, IL-15, IL-23, and TGF-β1. A key finding was that the phosphorylation of the three members (JAK2, STAT3, and STAT6) of the JAK/STAT/SOCS signaling pathway was inhibited, and the three downstream proteins (SOCS1, SOCS3, and PIAS3) from this pathway were highly expressed. In conclusion, curcumin suppressed the activation of DCs by modulating the JAK/STAT/SOCS signaling pathway to restore immunologic balance to effectively treat experimental colitis.
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Affiliation(s)
- Hai-Mei Zhao
- School of Basic Medical Sciences, Jiangxi University of Traditional Chinese Medicine Nanchang, China
| | - Rong Xu
- Department of Postgraduate, Jiangxi University of Traditional Chinese Medicine Nanchang, China
| | - Xiao-Ying Huang
- Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine Nanchang, China
| | - Shao-Min Cheng
- School of Basic Medical Sciences, Jiangxi University of Traditional Chinese Medicine Nanchang, China
| | - Min-Fang Huang
- Department of Postgraduate, Jiangxi University of Traditional Chinese Medicine Nanchang, China
| | - Hai-Yang Yue
- Department of Postgraduate, Jiangxi University of Traditional Chinese Medicine Nanchang, China
| | - Xin Wang
- Department of Postgraduate, Jiangxi University of Traditional Chinese Medicine Nanchang, China
| | - Yong Zou
- Department of Postgraduate, Jiangxi University of Traditional Chinese Medicine Nanchang, China
| | - Ai-Ping Lu
- School of Chinese Medicine, Hong Kong Baptist University Kowloon Tong, China
| | - Duan-Yong Liu
- Science and Technology College, Jiangxi University of Traditional Chinese Medicine Nanchang, China
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Immunoregulatory function of PIR-A/B+ DCs in the inflammatory responses of dextran sodium sulfate-induced colitis. J Gastroenterol 2014; 49:1367-77. [PMID: 24077781 DOI: 10.1007/s00535-013-0879-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 09/02/2013] [Indexed: 02/04/2023]
Abstract
BACKGROUND Dendritic cells (DCs) may play an important role in forms of inflammatory bowel disease (IBD), such as Crohn's disease and ulcerative colitis. DCs are generally recognized as initiators of acquired immunity and also serve as regulators of both innate and acquired immunity. We used the animal model of colitis induced by dextran sodium sulfate (DSS), and examined whether DCs prepared from the colon show immunoregulatory roles in the termination of DSS-induced colitis. METHODS C57BL/6 mice exposed to DSS for 5 days developed acute colitis. DCs were isolated from the large intestinal lamina propria, and then analyzed for phenotypical, functional, and genetic data. RESULTS Only PIR-A/B(low) conventional DCs (cDCs) were detected in the steady state. However, after the treatment of DSS, PIR-A/B(high) cDCs appeared and gradually increased from day 5 to day 7, at which time the DSS-induced colitis was terminated. Then, allogeneic mixed leukocyte reaction (MLR) was performed. The stimulatory activity of PIR-A/B(high) cDCs obtained on day 7 was very low, and the addition of PIR-A/B(high) cDCs suppressed the T cell proliferation in MLR, indicating the immunoregulatory role of PIR-A/B(high) cDCs. The immunoregulatory role of PIR-A/B(high) cDCs was confirmed by the in vivo transfer experiment, showing their therapeutic effect on DSS-induced colitis. The message level of TGFβi was significantly higher in PIR-A/B(high) cDCs, while that of IFN-γ was highly upregulated in PIR-A/B(low) cDCs, being well in accordance with the fact that PIR-A/B(high) cDCs showed a suppressive function against activated T cells. CONCLUSION PIR-A/B(high) cDCs showed a suppressive function against activated T cells by producing inhibitory cytokines.
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Abstract
The liver is the largest organ in the body and is generally regarded by nonimmunologists as having little or no lymphoid function. However, such is far from accurate. This review highlights the importance of the liver as a lymphoid organ. Firstly, we discuss experimental data surrounding the role of liver as a lymphoid organ. The liver facilitates tolerance rather than immunoreactivity, which protects the host from antigenic overload of dietary components and drugs derived from the gut and it is instrumental to fetal immune tolerance. Loss of liver tolerance leads to autoaggressive phenomena, which if not controlled by regulatory lymphoid populations, may lead to the induction of autoimmune liver diseases. Liver-related lymphoid subpopulations also act as critical antigen-presenting cells. The study of the immunological properties of liver and delineation of the microenvironment of the intrahepatic milieu in normal and diseased livers provides a platform to understand the hierarchy of a series of detrimental events that lead to immune-mediated destruction of the liver and the rejection of liver allografts. The majority of emphasis within this review will be on the normal mononuclear cell composition of the liver. However, within this context, we will discuss selected, but not all, immune-mediated liver disease and attempt to place these data in the context of human autoimmunity.
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Affiliation(s)
- Dimitrios P Bogdanos
- Institute of Liver Studies, Transplantation Immunology and Mucosal Biology, King's College London School of Medicine at King's College Hospital, London, UK
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Avula LR, Knapen D, Buckinx R, Vergauwen L, Adriaensen D, Van Nassauw L, Timmermans JP. Whole-genome microarray analysis and functional characterization reveal distinct gene expression profiles and patterns in two mouse models of ileal inflammation. BMC Genomics 2012; 13:377. [PMID: 22866923 PMCID: PMC3599598 DOI: 10.1186/1471-2164-13-377] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Accepted: 07/18/2012] [Indexed: 12/16/2022] Open
Abstract
Background Although a number of intestinal inflammatory conditions pertain to the ileum, whole-genome gene expression analyses in animal models of ileal inflammation are lacking to date. Therefore, we aimed to identify and characterize alterations in gene expression in the acutely inflamed ileum of two murine models of intestinal inflammation, namely intestinal schistosomiasis and TNBS-induced ileitis, compared to healthy controls. To this end, we used whole-genome microarrays, followed by bioinformatics analyses to detect over-represented Kyoto Encyclopedia of Genes and Genomes pathways and Gene Ontology categories. Results Following screening of almost all known mouse genes and transcripts represented on the array, intestinal schistosomiasis and TNBS-induced ileitis yielded 207 and 1417 differentially expressed genes, respectively, with only 30 overlapping concordantly changed genes. Functional category groups consisting of complement and coagulation cascades, extracellular matrix (ECM)-receptor interaction, Fc epsilon receptor I signaling pathways and protein activation cascade, cell adhesion categories were over-represented in the differential gene list of intestinal schistosomiasis. Antigen processing and presentation, cell adhesion molecules, ABC transporters, Toll-like receptor signaling pathways and response to chemical stimulus categories were over-represented in the differential gene list of TNBS-induced ileitis. Although cytokine-cytokine receptor interaction, intestinal immune network for IgA production, focal adhesion pathways and immune, inflammatory and defense response categories were over-represented in the differential gene lists of both inflammation models, the vast majority of the associated genes and changes were unique to each model. Conclusions This study characterized two models of ileal inflammation at a whole-genome level and outlined distinct gene expression profiles and patterns in the two models. The results indicate that intestinal schistosomiasis involves Th2 responses, complement activation, protein activation and enhanced ECM turnover, while TNBS-induced ileitis involves Th17 responses, defective antigen processing and presentation and altered Toll-like receptor-mediated responses. Signs of an impaired epithelial barrier are apparent in both inflammation models. Furthermore, the comprehensive differential gene list and functional groups provided by this study constitute an interesting starting point to explore new targets and extended functional networks dealing with small bowel inflammation.
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Affiliation(s)
- Leela Rani Avula
- Department of Veterinary Sciences, Laboratory of Cell Biology and Histology, University of Antwerp, Groenenborgerlaan 171, Antwerp B-2020, Belgium
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Hoshino S, Kurishima A, Inaba M, Ando Y, Fukui T, Uchida K, Nishio A, Iwai H, Yokoi T, Ito T, Hasegawa-Ishii S, Shimada A, Li M, Okazaki K, Ikehara S. Amelioration of 2,4,6-trinitrobenzene sulfonic acid-induced colitis in mice by immunoregulatory dendritic cells. J Gastroenterol 2011; 46:1368-81. [PMID: 21922185 DOI: 10.1007/s00535-011-0460-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Accepted: 07/17/2011] [Indexed: 02/04/2023]
Abstract
BACKGROUND Dendritic cells (DCs) are widely distributed throughout the lymphoid and nonlymphoid tissues, and are important initiators of acquired immunity. They also serve as regulators by inducing self-tolerance. However, it has not been thoroughly clarified whether DCs are somehow involved in the regulation or treatment of inflammatory bowel diseases. METHODS We established an ileitis model by transmurally injecting 2,4,6-trinitrobenzene sulfonic acid (TNBS) into the lumen of the ileocolonic junction. The kinetic movement of DCs at the inflammatory sites was analyzed histologically and by flow cytometry, and DCs obtained from the small intestine were analyzed in order to determine the expression of paired immunoglobulin-like receptor-A/B (PIR-A/B) by flow cytometry and quantitative RT-PCR. Furthermore, the regulatory role of DCs was directly determined by a transfer experiment using TNBS-induced colitis model mice. RESULTS We observed three DC subsets (PIR-A/B(high), PIR-A/B(med), and PIR-A/B(-) DCs) in the conventional DCs (cDCs) from day 3, and the number of PIR-A/B(med) cDCs increased from the time the inflammatory responses ceased (day 7). PIR-A/B(med) cDCs actually migrated to the inflamed colon, and ameliorated the colitis induced by TNBS when transferred to colitis-induced recipients. The colitis was greatly exacerbated when mice had been treated with the indoleamine-pyrrole 2,3-dioxygenase (IDO) inhibitor 1-methyltryptophan (1-mT) at the time PIR-A/B(med) cDCs were transferred, indicating that the therapeutic ability of PIR-A/B(med) cDCs is partially dependent on IDO. CONCLUSION The PIR-A/B(med) cDCs, which increase in number during the final stages of inflammation, can be used to treat colitis via an IDO-dependent mechanism.
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Affiliation(s)
- Shoichi Hoshino
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University, Moriguchi, Osaka, Japan.
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Abstract
There is now growing evidence that autoimmunity is the common trait connecting multiple clinical phenotypes albeit differences in tissue specificity, pathogenetic mechanisms, and therapeutic approaches cannot be overlooked. Over the past years we witnessed a constant growth of the number of publications related to autoimmune diseases in peer-reviewed journals of the immunology area. Original data referred to factors from common injury pathways (i.e. T helper 17 cells, serum autoantibodies, or vitamin D) and specific diseases such as multiple sclerosis, systemic lupus erythematosus, and rheumatoid arthritis. As an example, the issue of a latitudinal gradient in the prevalence and incidence rates has been proposed for all autoimmune diseases and was recently coined as geoepidemiology to suggest new environmental triggers for tolerance breakdown. The present article is aimed at reviewing the articles that were published over the past year in the major autoimmunity and immunology journals.
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Affiliation(s)
- Carlo Selmi
- Autoimmunity and Metabolism Unit, Department of Medicine, IRCCS Istituto Clinico Humanitas, Italy.
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