1
|
Evans L, Barral P. CD1 molecules: Beyond antigen presentation. Mol Immunol 2024; 170:1-8. [PMID: 38579449 DOI: 10.1016/j.molimm.2024.03.011] [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: 09/28/2022] [Revised: 03/18/2024] [Accepted: 03/29/2024] [Indexed: 04/07/2024]
Abstract
CD1 molecules are well known for their role in binding and presenting lipid antigens to mediate the activation of CD1-restricted T cells. However, much less appreciated is the fact that CD1 molecules can have additional "unconventional" roles which impact the activation and functions of CD1-expressing cells, ultimately controlling tissue homeostasis as well as the progression of inflammatory and infectious diseases. Some of these roles are mediated by so-called reverse signalling, by which crosslinking of CD1 molecules at the cell surface initiates intracellular signalling. On the other hand, CD1 molecules can also control metabolic and inflammatory pathways in CD1-expressing cells through cell-intrinsic mechanisms independent of CD1 ligation. Here, we review the evidence for "unconventional" functions of CD1 molecules and the outcomes of such roles for health and disease.
Collapse
Affiliation(s)
- Lauren Evans
- The Peter Gorer Department of Immunobiology. King's College London, London, UK; The Francis Crick Institute, London, UK
| | - Patricia Barral
- The Peter Gorer Department of Immunobiology. King's College London, London, UK; The Francis Crick Institute, London, UK.
| |
Collapse
|
2
|
Lin Q, Kuypers M, Baglaenko Y, Cao E, Hezaveh K, Despot T, de Amat Herbozo C, Cruz Tleugabulova M, Umaña JM, McGaha TL, Philpott DJ, Mallevaey T. The intestinal microbiota modulates the transcriptional landscape of iNKT cells at steady-state and following antigen exposure. Mucosal Immunol 2024; 17:226-237. [PMID: 38331095 DOI: 10.1016/j.mucimm.2024.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 01/30/2024] [Accepted: 02/01/2024] [Indexed: 02/10/2024]
Abstract
Invariant Natural Killer T (iNKT) cells are unconventional T cells that respond to microbe-derived glycolipid antigens. iNKT cells exert fast innate effector functions that regulate immune responses in a variety of contexts, including during infection, cancer, or inflammation. The roles these unconventional T cells play in intestinal inflammation remain poorly defined and vary based on the disease model and species. Our previous work suggested that the gut microbiota influenced iNKT cell functions during dextran sulfate sodium-induced colitis in mice. This study, shows that iNKT cell homeostasis and response following activation are altered in germ-free mice. Using prenatal fecal transplant in specific pathogen-free mice, we show that the transcriptional signatures of iNKT cells at steady state and following αGC-mediated activation in vivo are modulated by the microbiota. Our data suggest that iNKT cells sense the microbiota at homeostasis independently of their T cell receptors. Finally, iNKT cell transcriptional signatures are different in male and female mice. Collectively, our findings suggest that sex and the intestinal microbiota are important factors that regulate iNKT cell homeostasis and responses. A deeper understanding of microbiota-iNKT cell interactions and the impact of sex could improve the development of iNKT cell-based immunotherapies.
Collapse
Affiliation(s)
- Qiaochu Lin
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Meggie Kuypers
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Yuriy Baglaenko
- Center for Autoimmune Genomics and Etiology, Division of Genetics, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Eric Cao
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Kebria Hezaveh
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada; Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Tijana Despot
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | | | | | | | - Tracy L McGaha
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada; Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Dana J Philpott
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Thierry Mallevaey
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada.
| |
Collapse
|
3
|
Lee SW, Park HJ, Van Kaer L, Hong S. Role of CD1d and iNKT cells in regulating intestinal inflammation. Front Immunol 2024; 14:1343718. [PMID: 38274786 PMCID: PMC10808723 DOI: 10.3389/fimmu.2023.1343718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 12/26/2023] [Indexed: 01/27/2024] Open
Abstract
Invariant natural killer T (iNKT) cells, a subset of unconventional T cells that recognize glycolipid antigens in a CD1d-dependent manner, are crucial in regulating diverse immune responses such as autoimmunity. By engaging with CD1d-expressing non-immune cells (such as intestinal epithelial cells and enterochromaffin cells) and immune cells (such as type 3 innate lymphoid cells, B cells, monocytes and macrophages), iNKT cells contribute to the maintenance of immune homeostasis in the intestine. In this review, we discuss the impact of iNKT cells and CD1d in the regulation of intestinal inflammation, examining both cellular and molecular factors with the potential to influence the functions of iNKT cells in inflammatory bowel diseases such as Crohn's disease and ulcerative colitis.
Collapse
Affiliation(s)
- Sung Won Lee
- Department of Biomedical Laboratory Science, College of Health and Biomedical Services, Sangji University, Wonju, Republic of Korea
| | - Hyun Jung Park
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul, Republic of Korea
| | - Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Seokmann Hong
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul, Republic of Korea
| |
Collapse
|
4
|
Hu C, Liao S, Lv L, Li C, Mei Z. Intestinal Immune Imbalance is an Alarm in the Development of IBD. Mediators Inflamm 2023; 2023:1073984. [PMID: 37554552 PMCID: PMC10406561 DOI: 10.1155/2023/1073984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 07/06/2023] [Accepted: 07/08/2023] [Indexed: 08/10/2023] Open
Abstract
Immune regulation plays a crucial role in human health and disease. Inflammatory bowel disease (IBD) is a chronic relapse bowel disease with an increasing incidence worldwide. Clinical treatments for IBD are limited and inefficient. However, the pathogenesis of immune-mediated IBD remains unclear. This review describes the activation of innate and adaptive immune functions by intestinal immune cells to regulate intestinal immune balance and maintain intestinal mucosal integrity. Changes in susceptible genes, autophagy, energy metabolism, and other factors interact in a complex manner with the immune system, eventually leading to intestinal immune imbalance and the onset of IBD. These events indicate that intestinal immune imbalance is an alarm for IBD development, further opening new possibilities for the unprecedented development of immunotherapy for IBD.
Collapse
Affiliation(s)
- Chunli Hu
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Shengtao Liao
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Lin Lv
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Chuanfei Li
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Zhechuan Mei
- Department of Gastroenterology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| |
Collapse
|
5
|
Zhang Q, Deng P, Chen S, Xu H, Zhang Y, Chen H, Zhang J, Sun H. Electroacupuncture and human iPSC-derived small extracellular vesicles regulate the gut microbiota in ischemic stroke via the brain-gut axis. Front Immunol 2023; 14:1107559. [PMID: 36742316 PMCID: PMC9895941 DOI: 10.3389/fimmu.2023.1107559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 01/09/2023] [Indexed: 01/22/2023] Open
Abstract
Electroacupuncture (EA) and induced pluripotent stem cell (iPSC)-derived small extracellular vesicles (iPSC-EVs) have substantial beneficial effects on ischemic stroke. However, the detailed mechanisms remain unclear. Here, we explored the mechanisms underlying the regulation of EA and iPSC-EVs in the microbiome-gut-brain axis (MGBA) after ischemic stroke. Ischemic stroke mice (C57BL/6) were subjected to middle cerebral artery occlusion (MCAO) or Sham surgery. EA and iPSC-EVs treatments significantly improved neurological function and neuronal and intestinal tract injury, downregulated the levels of IL-17 expression and upregulated IL-10 levels in brain and colon tissue after cerebral ischemia-reperfusion. EA and iPSC-EVs treatments also modulated the microbiota composition and diversity as well as the differential distribution of species in the intestines of the mice after cerebral ischemia-reperfusion. Our results demonstrated that EA and iPSC-EVs treatments regulated intestinal immunity through MGBA regulation of intestinal microbes, reducing brain and colon damage following cerebral ischemia and positively impacting the outcomes of ischemic stroke. Our findings provide new insights into the application of EA combined with iPSC-EVs as a treatment for ischemic stroke.
Collapse
Affiliation(s)
- Qiongqiong Zhang
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Peiying Deng
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Suhui Chen
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Hong Xu
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Yamin Zhang
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Hui Chen
- CAMS Key Laboratory for T-Cell and Immunotherapy, State Key Laboratory of Medical Molecular Biology, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China,Haihe Laboratory of Cell Ecosystem, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China,Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, China
| | - Jianmin Zhang
- CAMS Key Laboratory for T-Cell and Immunotherapy, State Key Laboratory of Medical Molecular Biology, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, China,Haihe Laboratory of Cell Ecosystem, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China,Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, China,Guidon Pharmaceutics, Inc., Beijing, China,*Correspondence: Jianmin Zhang, ; Hua Sun,
| | - Hua Sun
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China,*Correspondence: Jianmin Zhang, ; Hua Sun,
| |
Collapse
|
6
|
Lin Q, Kuypers M, Liu Z, Copeland JK, Chan D, Robertson SJ, Kontogiannis J, Guttman DS, Banks EK, Philpott DJ, Mallevaey T. Invariant natural killer T cells minimally influence gut microbiota composition in mice. Gut Microbes 2022; 14:2104087. [PMID: 35912530 PMCID: PMC9348128 DOI: 10.1080/19490976.2022.2104087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Invariant Natural Killer T (iNKT) cells are unconventional T cells that respond to glycolipid antigens found in microbes in a CD1d-dependent manner. iNKT cells exert innate-like functions and produce copious amounts of cytokines, chemokines and cytotoxic molecules within only minutes of activation. As such, iNKT cells can fuel or dampen inflammation in a context-dependent manner. In addition, iNKT cells provide potent immunity against bacteria, viruses, parasites and fungi. Although microbiota-iNKT cell interactions are not well-characterized, mounting evidence suggests that microbiota colonization early in life impacts iNKT cell homeostasis and functions in disease. In this study, we showed that CD1d-/- and Vα14 Tg mice, which lack and have increased numbers of iNKT cells, respectively, had no significant alterations in gut microbiota composition compared to their littermate controls. Furthermore, specific iNKT cell activation by glycolipid antigens only resulted in a transient and minimal shift in microbiota composition when compared to the natural drift found in our colony. Our findings demonstrate that iNKT cells have little to no influence in regulating commensal bacteria at steady state.Abbreviations: iNKT: invariant Natural Killer T cell; αGC: α-galactosylceramide.
Collapse
Affiliation(s)
- Qiaochu Lin
- Department of Immunology, University of Toronto, Toronto, ON, Canada,CONTACT Thierry Mallevaey University of Toronto, Department of Immunology, Medical Sciences Building, Room 7334,1 King’s College Circle, Toronto, OntarioM5S 1A8, Canada
| | - Meggie Kuypers
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Zhewei Liu
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Julia K Copeland
- Centre for the Analysis of Genome Evolution & Function, University of Toronto, Toronto, Ontario, Canada
| | - Donny Chan
- Centre for the Analysis of Genome Evolution & Function, University of Toronto, Toronto, Ontario, Canada
| | - Susan J Robertson
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Jean Kontogiannis
- Division of Comparative Medicine, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - David S Guttman
- Centre for the Analysis of Genome Evolution & Function, University of Toronto, Toronto, Ontario, Canada,Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
| | - E. Kate Banks
- Division of Comparative Medicine, Faculty of Medicine, University of Toronto, Toronto, ON, Canada,Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - Dana J Philpott
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Thierry Mallevaey
- Department of Immunology, University of Toronto, Toronto, ON, Canada,Institute of Biomaterials & Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
7
|
Elucidating the Role of Innate and Adaptive Immune Responses in the Pathogenesis of Canine Chronic Inflammatory Enteropathy-A Search for Potential Biomarkers. Animals (Basel) 2022; 12:ani12131645. [PMID: 35804545 PMCID: PMC9264988 DOI: 10.3390/ani12131645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 06/11/2022] [Accepted: 06/14/2022] [Indexed: 12/12/2022] Open
Abstract
Simple Summary Canine chronic inflammatory enteropathy (CIE) is a chronic disease affecting the small or large intestine and, in some cases, the stomach of dogs. This gastrointestinal disorder is common and is characterized by recurrent vomiting, diarrhea, and weight loss in affected dogs. The pathogenesis of IBD is not completely understood. Similar to human IBD, potential disease factors include genetics, environmental exposures, and dysregulation of the microbiota and the immune response. Some important components of the innate and adaptive immune response involved in CIE pathogenesis have been described. However, the immunopathogenesis of the disease has not been fully elucidated. In this review, we summarized the literature associated with the different cell types and molecules involved in the immunopathogenesis of CIE, with the aim of advancing the search for biomarkers with possible diagnostic, prognostic, or therapeutic utility. Abstract Canine chronic inflammatory enteropathy (CIE) is one of the most common chronic gastrointestinal diseases affecting dogs worldwide. Genetic and environmental factors, as well as intestinal microbiota and dysregulated host immune responses, participate in this multifactorial disease. Despite advances explaining the immunological and molecular mechanisms involved in CIE development, the exact pathogenesis is still unknown. This review compiles the latest reports and advances that describe the main molecular and cellular mechanisms of both the innate and adaptive immune responses involved in canine CIE pathogenesis. Future studies should focus research on the characterization of the immunopathogenesis of canine CIE in order to advance the establishment of biomarkers and molecular targets of diagnostic, prognostic, or therapeutic utility.
Collapse
|
8
|
Facciotti F. Modulation of intestinal immune cell responses by eubiotic or dysbiotic microbiota in inflammatory bowel diseases. PHARMANUTRITION 2022. [DOI: 10.1016/j.phanu.2022.100303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
9
|
Kiran S, Rakib A, Moore BM, Singh UP. Cannabinoid Receptor 2 (CB2) Inverse Agonist SMM-189 Induces Expression of Endogenous CB2 and Protein Kinase A That Differentially Modulates the Immune Response and Suppresses Experimental Colitis. Pharmaceutics 2022; 14:pharmaceutics14050936. [PMID: 35631522 PMCID: PMC9147685 DOI: 10.3390/pharmaceutics14050936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/22/2022] [Accepted: 04/24/2022] [Indexed: 12/25/2022] Open
Abstract
The causes of Crohn’s disease (CD) and ulcerative colitis (UC), the two most common forms of inflammatory bowel disease (IBD), are multi-factorial and include dysregulation of immune cells in the intestine. Cannabinoids mediate protection against intestinal inflammation by binding to the G-protein coupled cannabinoid receptors 1 and 2 (CB1 and CB2). Here, we investigate the effects of the CB2 inverse agonist SMM-189 on dextran sodium sulfate (DSS)-induced experimental colitis. We observed that SMM-189 effectively attenuated the overall clinical score, reversed colitis-associated pathogenesis, and increased both body weight and colon length. Treatment with SMM-189 also increased the expression of CB2 and protein kinase A (PKA) in colon lamina propria lymphocytes (LPLs). We noticed alterations in the percentage of Th17, neutrophils, and natural killer T (NKT) cells in the spleen, mesenteric lymph nodes (MLNs), and LPLs of mice with DSS-induced colitis after treatment with SMM-189 relative to DSS alone. Further, myeloid-derived suppressor cells (MDSCs) during colitis progression increased with SMM-189 treatment as compared to DSS alone or with control cohorts. These findings suggest that SMM-189 may ameliorate experimental colitis by inducing the expression of endogenous CB2 and PKA in LPLs, increasing numbers of MDSCs in the spleen, and reducing numbers of Th17 cells and neutrophils in the spleen, MLNs, and LPLs. Taken together, these data support the idea that SMM-189 may be developed as a safe novel therapeutic target for IBD.
Collapse
|
10
|
Diao H, Xiao Y, Yan HL, Yu B, He J, Zheng P, Yu J, Mao XB, Chen DW. Effects of Early Transplantation of the Faecal Microbiota from Tibetan Pigs on the Gut Development of DSS-Challenged Piglets. BIOMED RESEARCH INTERNATIONAL 2021; 2021:9823969. [PMID: 33532501 PMCID: PMC7837763 DOI: 10.1155/2021/9823969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 12/30/2020] [Accepted: 01/06/2021] [Indexed: 12/20/2022]
Abstract
The present study was conducted to investigate the effects of early transplantation of the faecal microbiota from Tibetan pigs on the gut development of dextran sulphate sodium- (DSS-) challenged piglets. In total, 24 3-day-old DLY piglets were divided into four groups (n = 6 per group); a 2 × 2 factorial arrangement was used, which included faecal microbiota transplantation (FMT) (from Tibetan pigs) and DSS challenge. The whole trial lasted for 55 days. DSS infusion increased the intestinal density, serum diamine oxidase (DAO) activity, and colonic Escherichia coli count (P < 0.05), and decreased the Lactobacillus spp. count and mRNA abundances of epidermal growth factor (EGF), glucagon-like peptide-2 (GLP-2), insulin-like growth factor 1 (IGF-1), occludin, mucin 2 (MUC2), regeneration protein IIIγ (RegIIIγ), and interleukin-10 (IL-10) in the colon (P < 0.05). FMT increased the Lactobacillus spp. count and mRNA abundances of GLP-2, RegIIIγ, and IL-10 in the colon (P < 0.05), and decreased the intestinal density, serum DAO activity, and colonic E. coli number (P < 0.05). In addition, in DSS-challenged piglets, FMT decreased the disease activity index (P < 0.05) and attenuated the effect of DSS challenge on the intestinal density, serum DAO activity, and colonic E. coli number (P < 0.05). These data indicated that the faecal microbiota from Tibetan pigs could attenuate the negative effect of DSS challenge on the gut development of piglets.
Collapse
Affiliation(s)
- H. Diao
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, No. 46 Xinkang Road, Ya'an, Sichuan 625014, China
- Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Academy of Animal Science, No. 7 Niusha Road, Chengdu, Sichuan 610066, China
| | - Y. Xiao
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, No. 46 Xinkang Road, Ya'an, Sichuan 625014, China
| | - H. L. Yan
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, No. 46 Xinkang Road, Ya'an, Sichuan 625014, China
| | - B. Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, No. 46 Xinkang Road, Ya'an, Sichuan 625014, China
| | - J. He
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, No. 46 Xinkang Road, Ya'an, Sichuan 625014, China
| | - P. Zheng
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, No. 46 Xinkang Road, Ya'an, Sichuan 625014, China
| | - J. Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, No. 46 Xinkang Road, Ya'an, Sichuan 625014, China
| | - X. B. Mao
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, No. 46 Xinkang Road, Ya'an, Sichuan 625014, China
| | - D. W. Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, No. 46 Xinkang Road, Ya'an, Sichuan 625014, China
| |
Collapse
|
11
|
Lei Y, Chen Y, Lin Z, Tian D, Han P. Comprehensive analysis of key biomarkers, immune infiltration and potential therapeutic agents for ulcerative colitis. Life Sci 2020; 260:118437. [PMID: 32950577 DOI: 10.1016/j.lfs.2020.118437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 02/07/2023]
Abstract
AIMS There has been an increasing trend towards the ulcerative colitis (UC) incidence worldwide. The present study aimed to explore novel biomarkers and potential therapeutic agents for UC. MATERIALS AND METHODS Differentially expressed genes (DEGs) among UC and healthy control samples were identified by GEO2R online tool. Functional analysis was performed and protein-protein interaction networks were constructed. The hub genes were explored by Cytoscape, and quantitative real-time-PCR (qRT-PCR) was used to valid their expression in clinical samples. ImmuCellAI was utilized to analyze the fraction of 24 types of immune cells. The L1000 platform was applied to determine potential agents for UC treatment. The dextran sulfate sodium (DSS)-induced colitis model was used to identify the therapeutic effect of meclofenamic acid. KEY FINDINGS A total of 270 DEGs were identified among UC and healthy control samples. Functional analysis indicated that the DEGs were primarily enriched in several immune response and digestion pathways. A proportion of 18 immune-cell types was found to be significantly altered between UC and healthy control samples. 10 compounds were predicted to have therapeutic potentials for treating UC. Among them, we selected meclofenamic acid to identify its therapeutic effect on UC treatment by animal experiments. SIGNIFICANCE The current study comprehensively analyzed the DEGs and immune infiltration in UC, as well as screened for potential agents for UC treatment.
Collapse
Affiliation(s)
- Yu Lei
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Yu Chen
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Zhuoying Lin
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Dean Tian
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China.
| | - Ping Han
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China.
| |
Collapse
|
12
|
Cui S, Wang C, Bai W, Li J, Pan Y, Huang X, Yang H, Feng Z, Xiang Q, Fei L, Zheng L, Huang J, Zhang Q, Wu Y, Chen Y. CD1d1 intrinsic signaling in macrophages controls NLRP3 inflammasome expression during inflammation. SCIENCE ADVANCES 2020; 6:6/43/eaaz7290. [PMID: 33087357 PMCID: PMC7577718 DOI: 10.1126/sciadv.aaz7290] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 09/08/2020] [Indexed: 06/11/2023]
Abstract
Dysregulation of immune responses in the gut often associates with inflammatory bowel diseases (IBD). Mouse CD1d1, an ortholog of human CD1d mainly participating in lipid-antigen presentation to NKT cells, is able to generate intrinsic signals upon stimulation. Mice with macrophage-specific CD1d1 deficiency (LymCD1d1-/- ) acquire resistance to dextran sodium sulfate (DSS)-induced colitis, attributing to the transcriptional inhibition of NLRP3 inflammasome components. The hyperactivation of NLRP3 inflammasome accounts for gut epithelial proliferation and intestine-blood barrier integrity. Mechanistically, occupancy by the natural ligand glycosphingolipid iGb3, CD1d1 responds with intracellular Ser330 dephosphorylation thus to reduce the Peroxiredoxin 1 (PRDX1)-associated AKT-STAT1 phosphorylation and subsequent NF-κB activation, eventually causing transcriptional down-regulation of Nlrp3 and its immediate substrates Il1b and Il18 in macrophages. Therefore, the counterbalancing role of CD1d1 in macrophages appears to determine severity of DSS-mediated colitis in mice. These findings propose new intervention strategies for treating IBD and other inflammatory disorders.
Collapse
Affiliation(s)
- Shan Cui
- Yanbian University Hospital, Yanbian University, Jilin Province 133000, People's Republic of China
| | - Chenhui Wang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People's Republic of China
| | - Weizhi Bai
- Department of Emergency, Chongqing University Center Hospital, Chongqing Emergency Medical Center, Chongqing 400038, People's Republic of China
| | - Jiao Li
- School of Medicine, Yanbian University, Jilin Province 133000, People's Republic of China
| | - Yue Pan
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People's Republic of China
| | - Xiaoyong Huang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People's Republic of China
| | - Han Yang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People's Republic of China
| | - Zeqing Feng
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People's Republic of China
| | - Qun Xiang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People's Republic of China
| | - Lei Fei
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People's Republic of China
| | - Lixin Zheng
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD, USA
| | - Jian Huang
- Department of Emergency, Chongqing University Center Hospital, Chongqing Emergency Medical Center, Chongqing 400038, People's Republic of China.
| | - Qinggao Zhang
- School of Medicine, Yanbian University, Jilin Province 133000, People's Republic of China.
| | - Yuzhang Wu
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People's Republic of China.
| | - Yongwen Chen
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People's Republic of China.
| |
Collapse
|
13
|
Amoroso C, Perillo F, Strati F, Fantini M, Caprioli F, Facciotti F. The Role of Gut Microbiota Biomodulators on Mucosal Immunity and Intestinal Inflammation. Cells 2020; 9:cells9051234. [PMID: 32429359 PMCID: PMC7291275 DOI: 10.3390/cells9051234] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 12/12/2022] Open
Abstract
Alterations of the gut microbiota may cause dysregulated mucosal immune responses leading to the onset of inflammatory bowel diseases (IBD) in genetically susceptible hosts. Restoring immune homeostasis through the normalization of the gut microbiota is now considered a valuable therapeutic approach to treat IBD patients. The customization of microbe-targeted therapies, including antibiotics, prebiotics, live biotherapeutics and faecal microbiota transplantation, is therefore considered to support current therapies in IBD management. In this review, we will discuss recent advancements in the understanding of host−microbe interactions in IBD and the basis to promote homeostatic immune responses through microbe-targeted therapies. By considering gut microbiota dysbiosis as a key feature for the establishment of chronic inflammatory events, in the near future it will be suitable to design new cost-effective, physiologic, and patient-oriented therapeutic strategies for the treatment of IBD that can be applied in a personalized manner.
Collapse
Affiliation(s)
- Chiara Amoroso
- Department of Experimental Oncology, IEO European Institute of Oncology IRCCS, 20139 Milan, Italy; (C.A.); (F.P.); (F.S.)
| | - Federica Perillo
- Department of Experimental Oncology, IEO European Institute of Oncology IRCCS, 20139 Milan, Italy; (C.A.); (F.P.); (F.S.)
| | - Francesco Strati
- Department of Experimental Oncology, IEO European Institute of Oncology IRCCS, 20139 Milan, Italy; (C.A.); (F.P.); (F.S.)
| | - Massimo Fantini
- Gastroenterology Unit, Duilio Casula Hospital, AOU Cagliari, 09042 Cagliari, Italy;
- Department of Medical Science and Public Health, University of Cagliari, 09124 Cagliari, Italy
| | - Flavio Caprioli
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, 20135 Milan, Italy;
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20135 Milan, Italy
| | - Federica Facciotti
- Department of Experimental Oncology, IEO European Institute of Oncology IRCCS, 20139 Milan, Italy; (C.A.); (F.P.); (F.S.)
- Correspondence:
| |
Collapse
|
14
|
Lee C, Hong SN, Kim YH. A glycolipid adjuvant, 7DW8-5, provides a protective effect against colonic inflammation in mice by the recruitment of CD1d-restricted natural killer T cells. Intest Res 2020; 18:402-411. [PMID: 32248672 PMCID: PMC7609397 DOI: 10.5217/ir.2019.00132] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 01/08/2020] [Indexed: 01/31/2023] Open
Abstract
Background/Aims The modulation of CD1d-restricted natural killer T (NKT) cells by glycolipids has been considered as a potential therapy against immunologic diseases, including inflammatory bowel disease. A recently identified a glycolipid analog, 7DW8-5, which is derived from α-galactosylceramide (α-GalCer), is as much as 100-fold more active at stimulating both human and mice NKT cells when compared to α-GalCer. We explored the effects of 7DW8-5 in mouse models of acute and chronic colitis. Methods We investigated the effects of 7DW8-5 on intestinal inflammation by assessing the effects of 7dW8-5 on a murine dextran sulfate sodium (DSS)-induced acute colitis model and a chronic colitis-associated tumor model. Results The acute DSS-induced colitis model showed a dose-dependent response to 7DW8-5, as mice administered 7DW8-5 showed a significant improvement in DSS-induced colitis based on their disease activity index, histologic analysis, and serum C-reactive protein levels, when compared to mice administered vehicle alone. However, DSS-induced colitis in CD1d-KO mice showed no response to 7DW8-5. A fluorescence-activating cell sorting analysis revealed an increase in NKT cells in colonic tissues of 7DW8-5-treated mice. RNA-seq and real-time quantitative polymerase chain reaction showed a significant increase in the expression of interleukin (IL)-4, IL-13, and interferon-gamma in 7DW8-5-treated mice. In addition, 7DW8-5 treatment reduced colitis-associated tumor development in an azoxymethane/DSS mouse model. Conclusions 7DW8-5 activates NKT cells through CD1d and provides a protective effect against intestinal inflammation in mice. Therefore, 7DW8-5 may be a promising therapeutic agent for treatment of inflammatory bowel disease.
Collapse
Affiliation(s)
- Chansu Lee
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - Sung Noh Hong
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Young-Ho Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| |
Collapse
|
15
|
Saba E, Lee YY, Kim M, Hyun SH, Park CK, Son E, Kim DS, Kim SD, Rhee MH. A novel herbal formulation consisting of red ginseng extract and Epimedium koreanum Nakai-attenuated dextran sulfate sodium-induced colitis in mice. J Ginseng Res 2020; 44:833-842. [PMID: 33192127 PMCID: PMC7655509 DOI: 10.1016/j.jgr.2020.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 02/25/2020] [Indexed: 01/07/2023] Open
Abstract
Background Ulcerative colitis (UC) is a commonly encountered large intestine disease in the contemporary world that terminates into colorectal cancer; therefore, the timely treatment of UC is of major concern. Panax ginseng Meyer is an extensively consumed herbal commodity in South East Asian countries, especially Korea. It exhibits a wide range of biologically beneficial qualities for almost head-to-toe ailments in the body. Epimedium koreanum Nakai (EKN) is also a widely used traditional Korean herbal medicine used for treating infertility, rheumatism, and cardiovascular diseases. Materials and methods Separately the anti-inflammatory activities of both red ginseng extracts (RGEs) and EKNs had been demonstrated in the past in various inflammatory models; however, we sought to unravel the anti-inflammatory activities of the combination of these two extracts in dextran sulfate sodium (DSS)-induced ulcerative colitis in mice model because the allopathic remedies for UC involve more side effects than benefits. Results Our results have shown that the combination of RGE + EKN synergistically alleviated the macroscopic lesions in DSS-induced colitic mice such as colon shortening, hematochezia, and weight loss. Moreover, it restored the histopathological lesions in mice and decreased the levels of pro-inflammatory mediators and cytokines through the repression of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and nucleotide-binding domain (NOD)-like receptor protein 3 (NLRP-3) expression. In vitro, this combination also reduced the magnitude of nitric acid (NO), pro-inflammatory mediators and cytokine through NF-κB and mitogen-activated protein kinase (MAPK) pathways in RAW 264.7 mouse macrophage cells. Conclusion In the light of these findings, we can endorse this combination extract as a functional food for the prophylactic as well as therapeutic treatment of UC in humans together with allopathic remedies.
Collapse
Affiliation(s)
- Evelyn Saba
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea.,Department of Veterinary Biomedical Sciences, Faculty of Veterinary and Animal Sciences, Pir Mehr Ali Shah- Arid Agriculture University, Rawalpindi, Pakistan
| | - Yuan Yee Lee
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Minki Kim
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Sun-Hee Hyun
- R&D Headquarters, Korean Ginseng Cooperation, Daejeon, Republic of Korea
| | - Chae-Kyu Park
- R&D Headquarters, Korean Ginseng Cooperation, Daejeon, Republic of Korea
| | - Eunjung Son
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Dong-Seon Kim
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Sung-Dae Kim
- Research Center, Dongnam Institute of Radiological and Medical Sciences, Busan, Republic of Korea
| | - Man Hee Rhee
- Laboratory of Veterinary Physiology, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| |
Collapse
|
16
|
Brailey PM, Lebrusant‐Fernandez M, Barral P. NKT cells and the regulation of intestinal immunity: a two‐way street. FEBS J 2020; 287:1686-1699. [PMID: 32022989 DOI: 10.1111/febs.15238] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/17/2020] [Accepted: 02/03/2020] [Indexed: 12/14/2022]
Abstract
The mammalian gastrointestinal compartment is colonised by millions of microorganisms that have a central influence on human health. Intestinal homeostasis requires a continuous dialogue between the commensal bacteria and intestinal immune cells. While interactions between host and commensal bacteria are normally beneficial, allowing training and functional tuning of immune cells, dysregulated immune system-microbiota crosstalk can favour the development of chronic inflammatory diseases, as it is the case for inflammatory bowel disease (IBD). Natural killer T (NKT) cells, which recognise CD1-restricted microbial and self-lipids, contribute to the regulation of mucosal immunity by controlling intestinal homeostasis and participating in the development of IBD. Here, we provide an overview of the recently identified pathways underlying the crosstalk between commensal bacteria and NKT cells and discuss the effect of these interactions in intestinal health and disease.
Collapse
Affiliation(s)
- Phillip M. Brailey
- The Peter Gorer Department of Immunobiology King’s College London UK
- The Francis Crick Institute London UK
| | - Marta Lebrusant‐Fernandez
- The Peter Gorer Department of Immunobiology King’s College London UK
- The Francis Crick Institute London UK
| | - Patricia Barral
- The Peter Gorer Department of Immunobiology King’s College London UK
- The Francis Crick Institute London UK
| |
Collapse
|
17
|
Intestinal microbes influence development of thymic lymphocytes in early life. Proc Natl Acad Sci U S A 2020; 117:2570-2578. [PMID: 31964813 DOI: 10.1073/pnas.1915047117] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The thymus generates cells of the T cell lineage that seed the lymphatic and blood systems. Transcription factor regulatory networks control the lineage programming and maturation of thymic precursor cells. Whether extrathymic antigenic events, such as the microbial colonization of the mucosal tract also shape the thymic T cell repertoire is unclear. We show here that intestinal microbes influence the thymic homeostasis of PLZF-expressing cells in early life. Impaired thymic development of PLZF+ innate lymphocytes in germ-free (GF) neonatal mice is restored by colonization with a human commensal, Bacteroides fragilis, but not with a polysaccharide A (PSA) deficient isogenic strain. Plasmacytoid dendritic cells influenced by microbes migrate from the colon to the thymus in early life to regulate PLZF+ cell homeostasis. Importantly, perturbations in thymic PLZF+ cells brought about by alterations in early gut microbiota persist into adulthood and are associated with increased susceptibility to experimental colitis. Our studies identify a pathway of communication between intestinal microbes and thymic lymphocytes in the neonatal period that can modulate host susceptibility to immune-mediated diseases later in life.
Collapse
|
18
|
Riffelmacher T, Kronenberg M. Metabolic Triggers of Invariant Natural Killer T-Cell Activation during Sterile Autoinflammatory Disease. Crit Rev Immunol 2020; 40:367-378. [PMID: 33463949 PMCID: PMC7116673 DOI: 10.1615/critrevimmunol.2020035158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Ample evidence exists for activation of invariant natural killer T (iNKT) cells in a sterile manner by endogenous ligands or microbial antigens from the commensal flora, indicating that iNKT cells are not truly self-tolerant. Their controlled autoreactivity state is disturbed in many types of sterile inflammatory disease, resulting in their central role in modulating autoimmune responses. This review focuses on sterile iNKT-cell responses that are initiated by metabolic triggers, such as obesity-associated inflammation and fatty liver disease, as a manifestation of metabolic disease and dyslipidemia, as well as ischemia reperfusion injuries and sickle cell disease, characterized by acute lack of oxygen and oxidative stress response on reperfusion. In the intestine, inflammation and iNKT-cell response type are shaped by the microbiome as an extended "self". Disease- and organ-specific differences in iNKT-cell response type are summarized and help to define common pathways that shape iNKT-cell responses in the absence of exogenous antigen.
Collapse
Affiliation(s)
- Thomas Riffelmacher
- La Jolla Institute for Immunology, La Jolla, CA 92037
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford OX3 7FY, UK
| | - Mitchell Kronenberg
- La Jolla Institute for Immunology, La Jolla, CA 92037
- Division of Biological Sciences, University of California at San Diego, La Jolla, CA 92093
| |
Collapse
|
19
|
Lee C, Hong SN, Paik NY, Kim TJ, Kim ER, Chang DK, Kim YH. CD1d Modulates Colonic Inflammation in NOD2-/- Mice by Altering the Intestinal Microbial Composition Comprising Acetatifactor muris. J Crohns Colitis 2019; 13:1081-1091. [PMID: 31094420 DOI: 10.1093/ecco-jcc/jjz025] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
AIMS NOD2 and CD1d play a key role in innate immunity by recognizing conserved molecular patterns of pathogens. While NOD2-/- and CD1d-/- mice display structural and functional alterations in Paneth cells, animal studies have reported no impact of NOD2 or CD1d deficiency on experimental colitis. NOD2 mutations increase the susceptibility to inflammatory bowel diseases and the CD1d bound to α-galactosylceramide [α-GalCer] alleviates intestinal inflammation. We evaluated the effect of CD1d modulation on experimental colitis in NOD2-/- mice. METHODS The effect of CD1d augmentation and depletion in NOD2-/- mice was assessed in a dextran sodium sulphate [DSS]-induced colitis model via administration of α-GalCer and construction of NOD2-/-CD1d-/- mice. The structural and functional changes in Paneth cells were evaluated using transmission electron microscopy and pilocarpine administration. Colitogenic taxa were analysed in the faeces of NOD2-/-CD1d-/- mice using 16S rRNA gene sequencing. RESULTS In NOD2-/- mice, α-GalCer alleviated and CD1d depletion [NOD2-/-CD1d-/- mice] aggravated colitis activity and histology compared with co-housed littermates NOD2-/-, CD1d-/- and wild-type mice after administration of 3% DSS. In NOD2-/-CD1d-/- mice, the ultrastructure and degranulation ability of secretary granules in Paneth cells were altered and the intestinal microbial composition differed from that of their littermates. Faecal microbiota transplantation [FMT] with NOD2-/-CD1d-/- mice faeces into wild-type mice aggravated DSS-induced colitis, while FMT with wild-type mice faeces into NOD2-/-CD1d-/- mice alleviated DSS-induced colitis. Acetatifactor muris was identified only in NOD2-/-CD1d-/- mice faeces and the oral gavage of A. muris in wild-type mice aggravated DSS-induced colitis. CONCLUSION CD1d modulates colonic inflammation in NOD2-/- mice by altering the intestinal microbial composition comprising A. muris.
Collapse
Affiliation(s)
- Chansu Lee
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - Sung Noh Hong
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Nam Young Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Jun Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Eun Ran Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dong Kyung Chang
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Young-Ho Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| |
Collapse
|
20
|
Zhang H, Wang L, Li C, Yu Y, Yi Y, Wang J, Chen D. Exosome-Induced Regulation in Inflammatory Bowel Disease. Front Immunol 2019; 10:1464. [PMID: 31316512 PMCID: PMC6611439 DOI: 10.3389/fimmu.2019.01464] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 06/10/2019] [Indexed: 12/21/2022] Open
Abstract
An exosome (30-150 nm size) is a cell-derived vesicle. Exosome-induced regulation in inflammatory bowel disease (IBD) is becoming increasingly popular due to their potential functions of exosomal pathways. Exosomes, which are involved in the regulation of IBD, can be released from various cell types, or found in many physiological fluids, and plants. The specific functions of exosomes in IBD primarily depend on the internal functional components, including RNAs, proteins, and other substances. However, exosome-induced transport mechanisms involving cell-cell communications or cell-environment interactions are also very important. Recent studies have revealed that exosome crosstalk mechanisms may influence major IBD-related pathways, such as immune responses, barrier functions, and intestinal flora. This review highlights the advancements in the biology of exosome secretions and their regulation in IBD. The functional roles of exosomal components, including nucleic acids, proteins, and some other components, are the main focus of this review. More animal and clinical research is needed to study the functions of exosomes on IBD. Designing new drug dosage form using exosome-like-structure may provide new insights into IBD treatment. This review suggests a potential significance for exosomes in IBD diagnosis and treatment.
Collapse
Affiliation(s)
- Huiting Zhang
- Comparative Medicine Department, Dalian Medical University, Dalian, China
| | - Liang Wang
- Laboratory Animal Center, Dalian Medical University, Dalian, China
| | - Changyi Li
- Laboratory Animal Center, Dalian Medical University, Dalian, China
| | - Yue Yu
- Comparative Medicine Department, Dalian Medical University, Dalian, China
| | - Yanlin Yi
- Comparative Medicine Department, Dalian Medical University, Dalian, China
| | - Jingyu Wang
- Laboratory Animal Center, Dalian Medical University, Dalian, China
| | - Dapeng Chen
- Comparative Medicine Department, Dalian Medical University, Dalian, China
| |
Collapse
|
21
|
Burrello C, Pellegrino G, Giuffrè MR, Lovati G, Magagna I, Bertocchi A, Cribiù FM, Boggio F, Botti F, Trombetta E, Porretti L, Di Sabatino A, Vecchi M, Rescigno M, Caprioli F, Facciotti F. Mucosa-associated microbiota drives pathogenic functions in IBD-derived intestinal iNKT cells. Life Sci Alliance 2019; 2:2/1/e201800229. [PMID: 30760554 PMCID: PMC6374994 DOI: 10.26508/lsa.201800229] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 02/01/2019] [Accepted: 02/01/2019] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel disease (IBD) pathogenesis has been linked to the aberrant activation of the Gut-associated lymphoid tissues against components of the intestinal microbiota. Although the contribution of CD4+ T helper cells to inflammatory processes is being increasingly acknowledged, the functional engagement of human invariant natural killer T (iNKT) cells is still poorly defined. Here, we evaluated the functional characteristics of intestinal iNKT cells during IBD pathogenesis and to exploit the role of mucosa-associated microbiota recognition in triggering iNKT cells' pro-inflammatory responses in vivo. Lamina propria iNKT cells, isolated from surgical specimens of active ulcerative colitis and Crohn's disease patients and non-IBD donors, were phenotypically and functionally analyzed ex vivo, and stable cell lines and clones were generated for in vitro functional assays. iNKT cells expressing a pro-inflammatory cytokine profile were enriched in the lamina propria of IBD patients, and their exposure to the mucosa-associated microbiota drives pro-inflammatory activation, inducing direct pathogenic activities against the epithelial barrier integrity. These observations suggest that iNKT cell pro-inflammatory functions may contribute to the fuelling of intestinal inflammation in IBD patients.
Collapse
Affiliation(s)
- Claudia Burrello
- Department of Experimental Oncology, IEO, European Istitute of Oncology IRCCS, Milan, Italy
| | - Gabriella Pellegrino
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Maria Rita Giuffrè
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Giulia Lovati
- Department of Experimental Oncology, IEO, European Istitute of Oncology IRCCS, Milan, Italy
| | - Ilaria Magagna
- Department of Experimental Oncology, IEO, European Istitute of Oncology IRCCS, Milan, Italy
| | - Alice Bertocchi
- Department of Experimental Oncology, IEO, European Istitute of Oncology IRCCS, Milan, Italy
| | - Fulvia Milena Cribiù
- Pathology Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Francesca Boggio
- Pathology Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Fiorenzo Botti
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy.,General and Emergency Surgery Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Elena Trombetta
- Flow Cytometry Service, Clinical Chemistry and Microbiology Laboratory Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Laura Porretti
- Flow Cytometry Service, Clinical Chemistry and Microbiology Laboratory Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Antonio Di Sabatino
- First Department of Internal Medicine, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Maurizio Vecchi
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Maria Rescigno
- Department of Experimental Oncology, IEO, European Istitute of Oncology IRCCS, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Italy
| | - Flavio Caprioli
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Federica Facciotti
- Department of Experimental Oncology, IEO, European Istitute of Oncology IRCCS, Milan, Italy
| |
Collapse
|
22
|
Natural killer T cell ligand alpha-galactosylceramide protects against gut ischemia reperfusion-induced organ injury in mice. Cytokine 2018; 111:237-245. [DOI: 10.1016/j.cyto.2018.08.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 08/09/2018] [Accepted: 08/31/2018] [Indexed: 12/21/2022]
|
23
|
Lee SW, Park HJ, Cheon JH, Wu L, Van Kaer L, Hong S. iNKT Cells Suppress Pathogenic NK1.1 +CD8 + T Cells in DSS-Induced Colitis. Front Immunol 2018; 9:2168. [PMID: 30333822 PMCID: PMC6176072 DOI: 10.3389/fimmu.2018.02168] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 09/03/2018] [Indexed: 12/21/2022] Open
Abstract
T cells producing IFNγ play a pathogenic role in the development of inflammatory bowel disease (IBD). To investigate the functions of CD1d-dependent invariant natural killer T (iNKT) cells in experimental colitis induced in Yeti mice with dysregulated expression of IFNγ, we generated iNKT cell-deficient Yeti/CD1d KO mice and compared colitis among WT, CD1d KO, Yeti, and Yeti/CD1d KO mice following DSS treatment. We found that deficiency of iNKT cells exacerbated colitis and disease pathogenesis was mainly mediated by NK1.1+CD8+ T cells. Furthermore, the protective effects of iNKT cells correlated with up-regulation of regulatory T cells. Taken together, our results have demonstrated that CD1d-dependent iNKT cells and CD1d-independent NK1.1+CD8+ T cells reciprocally regulate the development of intestinal inflammatory responses mediated by IFNγ-dysregulation. These findings also identify NK1.1+CD8+ T cells as novel target cells for the development of therapeutics for human IBD.
Collapse
Affiliation(s)
- Sung Won Lee
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul, South Korea
| | - Hyun Jung Park
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul, South Korea
| | - Jae Hee Cheon
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, South Korea
| | - Lan Wu
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Seokmann Hong
- Department of Integrative Bioscience and Biotechnology, Institute of Anticancer Medicine Development, Sejong University, Seoul, South Korea
| |
Collapse
|
24
|
Natural killer T cells and ulcerative colitis. Cell Immunol 2018; 335:1-5. [PMID: 30638678 DOI: 10.1016/j.cellimm.2018.08.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 08/13/2018] [Accepted: 08/17/2018] [Indexed: 12/20/2022]
Abstract
Ulcerative colitis (UC) is one of the two major forms of inflammatory bowel disease (IBD). Both innate immunity and adaptive immunity are aberrant in IBD. The pathogenesis of UC includes abnormal inflammation and immune responses of the digestive tract. Natural killer T (NKT) cells participate in the innate and adaptive immune responses, together with a vast array of cytokines. Recent studies suggested that IL-13, IL5 and IL-4 are involved in the occurrence and the development of UC. Manipulating NKT cells may be a potential strategy to reconstruct the abnormal immune responses in UC. In this review, we explore the roles of NKT cells and cytokines in UC. Additionally, neutralizing antibodies and inhibitors of cytokines produced by NKT cells or their receptors are also discussed as novel therapeutic choices for UC.
Collapse
|
25
|
Mortier C, Govindarajan S, Venken K, Elewaut D. It Takes "Guts" to Cause Joint Inflammation: Role of Innate-Like T Cells. Front Immunol 2018; 9:1489. [PMID: 30008717 PMCID: PMC6033969 DOI: 10.3389/fimmu.2018.01489] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/15/2018] [Indexed: 12/12/2022] Open
Abstract
Innate-like T cells such as invariant natural killer T (iNKT) cells and mucosal-associated T (MAIT) cells, characterized by a semi-invariant T cell receptor and restriction toward MHC-like molecules (CD1 and MR1 respectively), are a unique unconventional immune subset acting at the interface of innate and adaptive immunity. Highly represented at barrier sites and capable of rapidly producing substantial amounts of cytokines, they serve a pivotal role as first-line responders against microbial infections. In contrast, it was demonstrated that innate-like T cells can be skewed toward a predominant pro-inflammatory state and are consequently involved in a number of autoimmune and inflammatory diseases like inflammatory bowel diseases and rheumatic disorders, such as spondyloarthritis (SpA) and rheumatoid arthritis. Interestingly, there is link between gut and joint disease as they often co-incide and share certain aspects of the pathogenesis such as established genetic risk factors, a critical role for pro-inflammatory cytokines, such as TNF-α, IL-23, and IL-17 and therapeutic susceptibility. In this regard dysregulated IL-23/IL-17 responses appear to be crucial in both debilitating pathologies and innate-like T cells likely act as key player. In this review, we will explore the remarkable features of iNKT cells and MAIT cells, and discuss their contribution to immunity and combined gut-joint disease.
Collapse
Affiliation(s)
- Céline Mortier
- Department of Rheumatology, Ghent University Hospital, Ghent, Belgium.,Unit for Molecular Immunology and Inflammation, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
| | - Srinath Govindarajan
- Department of Rheumatology, Ghent University Hospital, Ghent, Belgium.,Unit for Molecular Immunology and Inflammation, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
| | - Koen Venken
- Department of Rheumatology, Ghent University Hospital, Ghent, Belgium.,Unit for Molecular Immunology and Inflammation, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
| | - Dirk Elewaut
- Department of Rheumatology, Ghent University Hospital, Ghent, Belgium.,Unit for Molecular Immunology and Inflammation, VIB Center for Inflammation Research, Ghent University, Ghent, Belgium
| |
Collapse
|
26
|
Bora S, Cantorna MT. The role of UVR and vitamin D on T cells and inflammatory bowel disease. Photochem Photobiol Sci 2018; 16:347-353. [PMID: 27714313 DOI: 10.1039/c6pp00266h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Vitamin D deficiency is associated with the development of inflammatory bowel disease (IBD). In experimental IBD the targets of vitamin D that result in protection from IBD include gut epithelial cells, innate immune cells, T cells, and the microbiota. Ultraviolet radiation (UVR) induces production of vitamin D in the skin and suppresses T cell responses in the host. There is limited data demonstrating an effect of UVR on experimental IBD but the mechanisms of UVR suppression in IBD have not been defined. There are several shared effects of vitamin D and UVR on T cells including inhibition of proliferation and suppression of IFN-γ and IL-17 producing T cells. Conversely UVR decreases and vitamin D increases IL-4 production from T cells. Together the data suggest that UVR suppression of T cells and potentially IBD are both vitamin D dependent and independent.
Collapse
Affiliation(s)
- Stephanie Bora
- Center for Immunology and Infectious Disease, Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Margherita T Cantorna
- Center for Immunology and Infectious Disease, Department of Veterinary and Biomedical Science, The Pennsylvania State University, University Park, PA 16802, USA.
| |
Collapse
|
27
|
Shen S, Prame Kumar K, Stanley D, Moore RJ, Van TTH, Wen SW, Hickey MJ, Wong CHY. Invariant Natural Killer T Cells Shape the Gut Microbiota and Regulate Neutrophil Recruitment and Function During Intestinal Inflammation. Front Immunol 2018; 9:999. [PMID: 29867976 PMCID: PMC5949322 DOI: 10.3389/fimmu.2018.00999] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 04/23/2018] [Indexed: 12/16/2022] Open
Abstract
Invariant natural killer T (iNKT) cells and neutrophils play an increasingly important part in the pathogenesis of inflammatory diseases, but their precise roles in modulating colitis remain unclear. Previous studies have shown important interplays between host immune system and the gut microbiota, and the resulting modulation of inflammation. However, the interactions between iNKT cells, neutrophil and gut microbiota in regulating colitis pathology are poorly understood. Here, we show iNKT cell-deficient Jα18−/− mice display reduced dextran sodium sulfate (DSS)-induced colonic inflammation compared to their wild-type (WT) counterparts. We reveal that there is a distinct gut microbiota shaped by the absence of iNKT cells, which comprises of microorganisms that are associated with protection from colonic inflammation. Additionally, the reduced inflammation in Jα18−/− mice was correlated with increased expressions of neutrophil chemoattractant (Cxcl1 and Cxcl2) and increased neutrophil recruitment. However, these neutrophils were recruited to the colon at day 3 of our model, prior to observable clinical signs at day 5. Further analysis shows that these neutrophils, primed by the microbiota shaped by the lack of iNKT cells, exhibit anti-inflammatory and immune-modulatory properties. Indeed, depletion of neutrophils in DSS-treated Jα18−/− mice demonstrates that neutrophils confer an anti-colitogenic effect in the absence of iNKT cells. Thus, our data supports a changing dogma that neutrophils possess important regulatory roles in inflammation and highlights the complexity of the iNKT cell–microbiota–neutrophil axis in regulating colonic inflammation.
Collapse
Affiliation(s)
- Sj Shen
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia
| | - Kathryn Prame Kumar
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia
| | - Dragana Stanley
- School of Health Medical and Applied Sciences, Central Queensland University, Rockhampton, QLD, Australia
| | - Robert J Moore
- Infection and Immunity Program, Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia.,School of Science, RMIT University, Melbourne, VIC, Australia
| | - Thi Thu Hao Van
- School of Science, RMIT University, Melbourne, VIC, Australia
| | - Shu Wen Wen
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia
| | - Michael J Hickey
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia
| | - Connie H Y Wong
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia
| |
Collapse
|
28
|
Nishioka Y, Masuda S, Tomaru U, Ishizu A. CD1d-Restricted Type II NKT Cells Reactive With Endogenous Hydrophobic Peptides. Front Immunol 2018; 9:548. [PMID: 29599785 PMCID: PMC5862807 DOI: 10.3389/fimmu.2018.00548] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 03/05/2018] [Indexed: 11/13/2022] Open
Abstract
NKT cells belong to a distinct subset of T cells that recognize hydrophobic antigens presented by major histocompatibility complex class I-like molecules, such as CD1d. Because NKT cells stimulated by antigens can activate or suppress other immunocompetent cells through an immediate production of a large amount of cytokines, they are regarded as immunological modulators. CD1d-restricted NKT cells are classified into two subsets, namely, type I and type II. CD1d-restricted type I NKT cells express invariant T cell receptors (TCRs) and react with lipid antigens, including the marine sponge-derived glycolipid α-galactosylceramide. On the contrary, CD1d-restricted type II NKT cells recognize a wide variety of antigens, including glycolipids, phospholipids, and hydrophobic peptides, by their diverse TCRs. In this review, we focus particularly on CD1d-restricted type II NKT cells that recognize endogenous hydrophobic peptides presented by CD1d. Previous studies have demonstrated that CD1d-restricted type I NKT cells usually act as pro-inflammatory cells but sometimes behave as anti-inflammatory cells. It has been also demonstrated that CD1d-restricted type II NKT cells play opposite roles to CD1d-restricted type I NKT cells; thus, they function as anti-inflammatory or pro-inflammatory cells depending on the situation. In line with this, CD1d-restricted type II NKT cells that recognize type II collagen peptide have been demonstrated to act as anti-inflammatory cells in diverse inflammation-induction models in mice, whereas pro-inflammatory CD1d-restricted type II NKT cells reactive with sterol carrier protein 2 peptide have been demonstrated to be involved in the development of small vessel vasculitis in rats.
Collapse
Affiliation(s)
- Yusuke Nishioka
- Graduate School of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Sakiko Masuda
- Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Utano Tomaru
- Department of Pathology, Faculty of Medicine, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Akihiro Ishizu
- Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| |
Collapse
|
29
|
Abstract
Inflammatory bowel disease (IBD), encompassing Crohn's disease and ulcerative colitis, is a chronic intestinal inflammatory disorder characterized by diffuse accumulation of lymphocytes in the gut mucosa as a consequence of over-expression of endothelial adhesion molecules. The infiltrating lymphocytes have been identified as subsets of T cells, including T helper (Th)1 cells, Th17 cells, and regulatory T cells. The function of these lymphocyte subpopulations in the development of IBD is well-known, since they produce a number of pro-inflammatory cytokines, such as interferon-γ and interleukin-17A, which in turn activate mucosal proteases, thus leading to the development of intestinal lesions, i.e., ulcers, fistulas, abscesses, and strictures. However, the immune mechanisms underlying IBD are not yet fully understood, and knowledge about the function of newly discovered lymphocytes, including Th9 cells, innate lymphoid cells, mucosal-associated invariant T cells, and natural killer T cells, might add new pieces to the complex puzzle of IBD pathogenesis. This review summarizes the recent advances in the understanding of the role of mucosal lymphocytes in chronic intestinal inflammation and deals with the therapeutic potential of lymphocyte-targeting drugs in IBD patients.
Collapse
|
30
|
Wang Y, Cardell SL. The Yin and Yang of Invariant Natural Killer T Cells in Tumor Immunity-Suppression of Tumor Immunity in the Intestine. Front Immunol 2018; 8:1945. [PMID: 29375569 PMCID: PMC5767593 DOI: 10.3389/fimmu.2017.01945] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 12/18/2017] [Indexed: 12/11/2022] Open
Abstract
CD1d-restricted invariant natural killer T (iNKT) cells are known as early responding, potent regulatory cells of immune responses. Besides their established role in the regulation of inflammation and autoimmune disease, numerous studies have shown that iNKT cells have important functions in tumor immunosurveillance and control of tumor metastasis. Tumor-infiltrating T helper 1 (TH1)/cytotoxic T lymphocytes have been associated with a positive prognosis. However, inflammation has a dual role in cancer and chronic inflammation is believed to be a driving force in many cancers as exemplified in patients with inflammatory bowel disease that have an increased risk of colorectal cancer. Indeed, NKT cells promote intestinal inflammation in human ulcerative colitis, and the associated animal model, indicating that NKT cells may favor tumor development in intestinal tissue. In contrast to other cancers, recent data from animal models suggest that iNKT cells promote tumor formation in the intestine by supporting an immunoregulatory tumor microenvironment and suppressing TH1 antitumor immunity. Here, we review the role of iNKT cells in suppression of tumor immunity in light of iNKT-cell regulation of intestinal inflammation. We also discuss suppression of immunity in other situations as well as factors that may influence whether iNKT cells have a protective or an immunosuppressive and tumor-promoting role in tumor immunity.
Collapse
Affiliation(s)
- Ying Wang
- Department of Microbiology and Immunology, University of Gothenburg, Gothenburg, Sweden
| | - Susanna L Cardell
- Department of Microbiology and Immunology, University of Gothenburg, Gothenburg, Sweden
| |
Collapse
|
31
|
van Puijvelde GH, Kuiper J. NKT cells in cardiovascular diseases. Eur J Pharmacol 2017; 816:47-57. [DOI: 10.1016/j.ejphar.2017.03.052] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 03/10/2017] [Accepted: 03/23/2017] [Indexed: 12/17/2022]
|
32
|
Early Gut Microbiota Intervention Suppresses DSS-Induced Inflammatory Responses by Deactivating TLR/NLR Signalling in Pigs. Sci Rep 2017; 7:3224. [PMID: 28607413 PMCID: PMC5468271 DOI: 10.1038/s41598-017-03161-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 04/25/2017] [Indexed: 02/07/2023] Open
Abstract
Recent metagenomic studies suggest that innate and adaptive immune phenotypes can be programmed via gut microbiota-host interactions mediated via activation of pattern recognition receptors (PRRs) on host cells. In this study, we used two extremely different pig lines (the Yorkshire and the Tibetan) to test the hypothesis that the transplantation of gut microbiota could transfer certain immunologic characteristics from donor to recipient. The faecal microbiota of these two pig lines was transplanted in healthy commercial hybrid newborn piglets to establish the “Tibetan-intervened” and “Yorkshire-intervened” porcine models. Then, acute colitis was induced using dextran sulphate sodium (DSS), which activated Toll-/NOD-like receptor (TLR/NLR) signalling in the colonic tissues of the “Yorkshire-intervened” piglets, leading to increases in pro-inflammatory cytokines and immune cells and causing intestinal injuries. Conversely, DSS administration had little influence on the “Tibetan-intervened” piglets, which showed no significant inflammation and no changes in cytokines, immune cells, or signalling molecules, including TLRs, NLRs, MYD88 and NF-κB, after DSS treatment. These results indicate that pigs inoculated with the Tibetan microbiota acquired relatively strong resistance to experimental colitis, suggesting that the genotype of the host contributes to the uniqueness of its intestinal microbial community, whereas the microbiota plays a vital role in programming the immune phenotypes of the host.
Collapse
|
33
|
Sang LX, Chang B, Zhu JF, Yang FL, Li Y, Jiang XF, Wang DN, Lu CL, Sun X. Sodium selenite ameliorates dextran sulfate sodium-induced chronic colitis in mice by decreasing Th1, Th17, and γδT and increasing CD4(+)CD25(+) regulatory T-cell responses. World J Gastroenterol 2017; 23:3850-3863. [PMID: 28638225 PMCID: PMC5467071 DOI: 10.3748/wjg.v23.i21.3850] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 12/29/2016] [Accepted: 03/15/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To assess the effect of sodium selenite on the severity of dextran sulfate sodium (DSS)-induced colitis in C57BL/6 mice.
METHODS Mice were randomly divided into four groups (n = 10/group): normal group, selenium (Se) group, chronic colitis group, and Se + chronic colitis group. The mice were sacrificed on day 26. Survival rates, clinical symptoms, colon length, and histological changes were determined. The percentages and absolute numbers of immune system cells in the lamina propria lymphocytes (LPL) of the colon, the expression of mRNA in colon tissue, and the concentrations of Th1, Th17, and Treg cytokines in LPL from the large intestine, were measured.
RESULTS Se significantly ameliorated the symptoms of colitis and histological injury (P < 0.05 each), increasing the proportions of neutrophils and CD4+ CD25+ T cells (P < 0.05 each) and decreasing the proportions of γδT cells, CD4+, CD4+CD44+, and CD4+ CD69+ T cells in LPL (P < 0.05 each). Moreover, Se reduced the expression of IL-6, IFN-γ, IL-17A, IL-21, T-bet, and RORγt (P < 0.05 each), but enhanced the expression of IL-10 and Foxp3 (P < 0.05 each).
CONCLUSION These results suggest that Se protects against DSS-induced chronic colitis perhaps by increasing the number of CD4(+)CD25(+) Tregs that suppress the secretion of proinflammatory cytokines and populations of Th1, Th17, and γδT cells.
Collapse
|
34
|
Sagami S, Ueno Y, Tanaka S, Fujita A, Niitsu H, Hayashi R, Hyogo H, Hinoi T, Kitadai Y, Chayama K. Choline Deficiency Causes Colonic Type II Natural Killer T (NKT) Cell Loss and Alleviates Murine Colitis under Type I NKT Cell Deficiency. PLoS One 2017; 12:e0169681. [PMID: 28095507 PMCID: PMC5241147 DOI: 10.1371/journal.pone.0169681] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 12/20/2016] [Indexed: 12/31/2022] Open
Abstract
Serum levels of choline and its derivatives are lower in patients with inflammatory bowel disease (IBD) than in healthy individuals. However, the effect of choline deficiency on the severity of colitis has not been investigated. In the present study, we investigated the role of choline deficiency in dextran sulfate sodium (DSS)-induced colitis in mice. Methionine-choline-deficient (MCD) diet lowered the levels of type II natural killer T (NKT) cells in the colonic lamina propria, peritoneal cavity, and mesenteric lymph nodes, and increased the levels of type II NKT cells in the livers of wild-type B6 mice compared with that in mice fed a control (CTR) diet. The gene expression pattern of the chemokine receptor CXCR6, which promotes NKT cell accumulation, varied between colon and liver in a manner dependent on the changes in the type II NKT cell levels. To examine the role of type II NKT cells in colitis under choline-deficient conditions, we assessed the severity of DSS-induced colitis in type I NKT cell-deficient (Jα18-/-) or type I and type II NKT cell-deficient (CD1d-/-) mice fed the MCD or CTR diets. The MCD diet led to amelioration of inflammation, decreases in interferon (IFN)-γ and interleukin (IL)-4 secretion, and a decrease in the number of IFN-γ and IL-4-producing NKT cells in Jα18-/- mice but not in CD1d-/- mice. Finally, adaptive transfer of lymphocytes with type II NKT cells exacerbated DSS-induced colitis in Jα18-/- mice with MCD diet. These results suggest that choline deficiency causes proinflammatory type II NKT cell loss and alleviates DSS-induced colitis. Thus, inflammation in DSS-induced colitis under choline deficiency is caused by type II NKT cell-dependent mechanisms, including decreased type II NKT cell and proinflammatory cytokine levels.
Collapse
Affiliation(s)
- Shintaro Sagami
- Department of Medicine and Molecular Science, Hiroshima University, Hiroshima, Japan
- * E-mail: (SS); (YU)
| | - Yoshitaka Ueno
- Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan
- * E-mail: (SS); (YU)
| | - Shinji Tanaka
- Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan
| | - Akira Fujita
- Department of Medicine and Molecular Science, Hiroshima University, Hiroshima, Japan
| | - Hiroaki Niitsu
- Department of Gastroenterological and Transplant Surgery, Applied Life Sciences, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Ryohei Hayashi
- Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan
| | - Hideyuki Hyogo
- Department of Gastroenterology, Hiroshima General Hospital, Hiroshima, Japan
| | - Takao Hinoi
- Department of Gastroenterological and Transplant Surgery, Applied Life Sciences, Institute of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
- Department of Surgery, Institute for Clinical Research, National Hospital Organization Kure Medical Center and Chu-goku Cancer Center, Hiroshima, Japan
| | - Yasuhiko Kitadai
- Department of Life Sciences, Prefectural University of Hiroshima, Hiroshima, Japan
| | - Kazuaki Chayama
- Department of Medicine and Molecular Science, Hiroshima University, Hiroshima, Japan
| |
Collapse
|
35
|
NK cells are biologic and biochemical targets of 6-mercaptopurine in Crohn's disease patients. Clin Immunol 2016; 175:82-90. [PMID: 28011186 DOI: 10.1016/j.clim.2016.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/11/2016] [Accepted: 12/16/2016] [Indexed: 01/18/2023]
Abstract
NK cells, which contribute to immune defense against certain viral infections and neoplasia, are emerging as modifiers of chronic immunologic diseases including transplant rejection and autoimmune diseases. Immunobiology and genetic studies have implicated NK cells as a modifier of Crohn's disease, a condition often treated with thiopurine agents such as 6-mercaptopurine (6-MP). Here, we demonstrate that thiopurines mediate NK cell apoptosis via a caspase 3 and 9 inclusive pathway, and that this process is triggered by thiopurine-mediated inhibition of Rac1. We also show that CD patients in clinical remission maintained on 6-MP have decreased NK cell Rac1 activity, and decreased NK cell numbers in their intestinal biopsies. These observations suggest that thiopurine targeting of NK cells may be a previously unappreciated therapeutic action of these agents in IBD.
Collapse
|
36
|
Selvanantham T, Lin Q, Guo CX, Surendra A, Fieve S, Escalante NK, Guttman DS, Streutker CJ, Robertson SJ, Philpott DJ, Mallevaey T. NKT Cell–Deficient Mice Harbor an Altered Microbiota That Fuels Intestinal Inflammation during Chemically Induced Colitis. THE JOURNAL OF IMMUNOLOGY 2016; 197:4464-4472. [DOI: 10.4049/jimmunol.1601410] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 10/03/2016] [Indexed: 02/07/2023]
|
37
|
Simovic Markovic B, Nikolic A, Gazdic M, Bojic S, Vucicevic L, Kosic M, Mitrovic S, Milosavljevic M, Besra G, Trajkovic V, Arsenijevic N, Lukic ML, Volarevic V. Galectin-3 Plays an Important Pro-inflammatory Role in the Induction Phase of Acute Colitis by Promoting Activation of NLRP3 Inflammasome and Production of IL-1β in Macrophages. J Crohns Colitis 2016; 10:593-606. [PMID: 26786981 PMCID: PMC4957458 DOI: 10.1093/ecco-jcc/jjw013] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 12/26/2015] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND AIMS Galectin-3 [Gal-3] is an endogenous lectin with a broad spectrum of immunoregulatory effects: it plays an important role in autoimmune/inflammatory and malignant diseases, but the precise role of Gal-3 in pathogenesis of ulcerative colitis is still unknown. METHODS We used a model of dextran sulphate sodium [DSS]-induced acute colitis. The role of Gal-3 in pathogenesis of this disease was tested by evaluating disease development in Gal-3 deficient mice and administration of Gal-3 inhibitor. Disease was monitored by clinical, histological, histochemical, and immunophenotypic investigations. Adoptive transfer was used to detect cellular events in pathogenesis. RESULTS Genetic deletion or pharmacological inhibition of Gal-3 significantly attenuate DSS-induced colitis. Gal-3 deletion suppresses production of pro-inflammatory cytokines in colonic macrophages and favours their alternative activation, as well as significantly reducing activation of NOD-like receptor family, pyrin domain containing 3 [NLRP3] inflammasome in macrophages. Peritoneal macrophages isolated from untreated Gal-3(-/-) mice and treated in vitro with bacterial lipopolysaccharide or DSS produce lower amounts of tumour necrosis factor alpha [TNF-α] and interleukin beta [IL-1β] when compared with wild type [WT] cells. Genetic deletion of Gal-3 did not directly affect total neutrophils, inflammatory dendritic cells [DCs] or natural killer [NK] T cells. However, the total number of CD11c+ CD80+ DCs which produce pro-inflammatory cytokines, as well as TNF-α and IL-1β producing CD45+ CD11c- Ly6G+ neutrophils were significantly lower in colons of Gal-3(-/-) DSS-treated mice. Adoptive transfer of WT macrophages significantly enhanced the severity of disease in Gal-3(-/-) mice. CONCLUSIONS Gal-3 expression promotes acute DSS-induced colitis and plays an important pro-inflammatory role in the induction phase of colitis by promoting the activation of NLRP3 inflammasome and production of IL-1β in macrophages.
Collapse
Affiliation(s)
- Bojana Simovic Markovic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Aleksandar Nikolic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Marina Gazdic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Sanja Bojic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Ljubica Vucicevic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Milica Kosic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Slobodanka Mitrovic
- Department of Pathology, Faculty of Medical Sciences, Clinical Center Kragujevac, Kragujevac, Serbia
| | - Milos Milosavljevic
- Department of Pathology, Faculty of Medical Sciences, Clinical Center Kragujevac, Kragujevac, Serbia
| | - Gurdyal Besra
- Institute of Microbiology and Infection, School of Biosciences, University of Birmingham, Birmingham, UK
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | - Nebojsa Arsenijevic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Miodrag L. Lukic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Vladislav Volarevic
- Center for Molecular Medicine and Stem Cell Research, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| |
Collapse
|
38
|
Mohr A, Renaudineau Y, Bagacean C, Pers JO, Jamin C, Bordron A. Regulatory B lymphocyte functions should be considered in chronic lymphocytic leukemia. Oncoimmunology 2016; 5:e1132977. [PMID: 27467951 DOI: 10.1080/2162402x.2015.1132977] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 12/10/2015] [Accepted: 12/12/2015] [Indexed: 02/06/2023] Open
Abstract
Chronic lymphocytic leukemia (CLL) is characterized by an abnormal expansion of mature B cells in the bone marrow and their accumulation in blood and secondary lymphoid organs. Tumor CLL cells share expression of various surface molecules with many subsets of B cells and have several common characteristics with regulatory B cells (B regs). However, the identification of B regs and their role in CLL remain elusive. The aim of this review is to summarize recent works regarding the regulatory and phenotypic characteristic of B regs and their associated effects on the immune system. It is also meant to highlight their potential importance with regards to the immunotherapeutic response.
Collapse
Affiliation(s)
- Audrey Mohr
- INSERM ESPRI ERI29/EA2216 Laboratory of Immunotherapies and Pathologies of B Lymphocytes, Université de Brest, Labex IGO "Immunotherapy Graft, Oncology," Reseau Epigenetique et Reseau Canaux Ioniques du Cancéropole Grand Ouest , Brest, France
| | - Yves Renaudineau
- INSERM ESPRI ERI29/EA2216 Laboratory of Immunotherapies and Pathologies of B Lymphocytes, Université de Brest, Labex IGO "Immunotherapy Graft, Oncology," Reseau Epigenetique et Reseau Canaux Ioniques du Cancéropole Grand Ouest, Brest, France; Laboratory of Immunology and Immunotherapy, CHRU Morvan, Brest, France
| | - Cristina Bagacean
- INSERM ESPRI ERI29/EA2216 Laboratory of Immunotherapies and Pathologies of B Lymphocytes, Université de Brest, Labex IGO "Immunotherapy Graft, Oncology," Reseau Epigenetique et Reseau Canaux Ioniques du Cancéropole Grand Ouest, Brest, France; Laboratory of Immunology and Immunotherapy, CHRU Morvan, Brest, France
| | - Jacques-Olivier Pers
- INSERM ESPRI ERI29/EA2216 Laboratory of Immunotherapies and Pathologies of B Lymphocytes, Université de Brest, Labex IGO "Immunotherapy Graft, Oncology," Reseau Epigenetique et Reseau Canaux Ioniques du Cancéropole Grand Ouest , Brest, France
| | - Christophe Jamin
- INSERM ESPRI ERI29/EA2216 Laboratory of Immunotherapies and Pathologies of B Lymphocytes, Université de Brest, Labex IGO "Immunotherapy Graft, Oncology," Reseau Epigenetique et Reseau Canaux Ioniques du Cancéropole Grand Ouest, Brest, France; Laboratory of Immunology and Immunotherapy, CHRU Morvan, Brest, France
| | - Anne Bordron
- INSERM ESPRI ERI29/EA2216 Laboratory of Immunotherapies and Pathologies of B Lymphocytes, Université de Brest, Labex IGO "Immunotherapy Graft, Oncology," Reseau Epigenetique et Reseau Canaux Ioniques du Cancéropole Grand Ouest , Brest, France
| |
Collapse
|
39
|
Wang X, Sun Y, Zhao Y, Ding Y, Zhang X, Kong L, Li Z, Guo Q, Zhao L. Oroxyloside prevents dextran sulfate sodium-induced experimental colitis in mice by inhibiting NF-κB pathway through PPARγ activation. Biochem Pharmacol 2016; 106:70-81. [PMID: 26947454 DOI: 10.1016/j.bcp.2016.02.019] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 02/26/2016] [Indexed: 01/12/2023]
Abstract
Oroxyloside, as a metabolite of oroxylin A, may harbor various beneficial bioactivities which have rarely been reported in the previous studies. Here we established the dextran sulfate sodium (DSS)-induced experimental colitis and evaluated the anti-inflammatory effect of oroxyloside in vivo. As a result, oroxyloside attenuated DSS-induced body weight loss, colon length shortening and colonic pathological damage. Furthermore, oroxyloside inhibited inflammatory cell infiltration and decreased myeloperoxidase (MPO) and inducible nitric oxide synthase (iNOS) activities as well. The production of pro-inflammatory cytokines in serum and colon was also significantly reduced by oroxyloside. We unraveled the underlying mechanisms that oroxyloside inhibited NF-κB pathway by activating Peroxisome Proliferator-Activated Receptor γ (PPARγ) to attenuate DSS-induced colitis. Moreover, we investigated the anti-inflammatory effect and mechanisms of oroxyloside in the mouse macrophage cell line RAW264.7 and bone marrow derived macrophages (BMDM). Oroxyloside decreased several LPS-induced inflammatory cytokines, including IL-1β, IL-6 and TNF-α in RAW264.7 and BMDM. We also found that oroxyloside inhibited LPS-induced activation of NF-κB signaling pathway via activating PPARγ in RAW 264.7 and BMDM. Docking study showed that oroxyloside could bind with PPARγ. GW9662, the inhibitor of PPARγ, and PPARγ siRNA transfection blocked the effect of oroxyloside on PPARγ activation. Our study suggested that oroxyloside prevented DSS-induced colitis by inhibiting NF-κB pathway through PPARγ activation. Therefore, oroxyloside may be a promising and effective agent for inflammatory bowel disease (IBD).
Collapse
Affiliation(s)
- Xiaoping Wang
- Jiangsu Key Laboratory of Carcinogenesis and Intervention, State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Yang Sun
- Jiangsu Key Laboratory of Carcinogenesis and Intervention, State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Yue Zhao
- Jiangsu Key Laboratory of Carcinogenesis and Intervention, State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Youxiang Ding
- Jiangsu Key Laboratory of Carcinogenesis and Intervention, State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Xiaobo Zhang
- Jiangsu Key Laboratory of Carcinogenesis and Intervention, State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Lingyi Kong
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Zhiyu Li
- School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
| | - Qinglong Guo
- Jiangsu Key Laboratory of Carcinogenesis and Intervention, State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China.
| | - Li Zhao
- Jiangsu Key Laboratory of Carcinogenesis and Intervention, State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China.
| |
Collapse
|
40
|
Dowds CM, Blumberg RS, Zeissig S. Control of intestinal homeostasis through crosstalk between natural killer T cells and the intestinal microbiota. Clin Immunol 2015; 159:128-33. [PMID: 25988859 PMCID: PMC4817350 DOI: 10.1016/j.clim.2015.05.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Revised: 05/05/2015] [Accepted: 05/10/2015] [Indexed: 02/08/2023]
Abstract
The human host and the intestinal microbiota co-exist in a mutually beneficial relationship, which contributes to host and microbial metabolism as well as maturation of the host's immune system, among many other pathways (Tremaroli and Backhed, 2012; Hooper et al., 2012). At mucosal surfaces, and particularly in the intestine, the commensal microbiota provides 'colonization resistance' to invading pathogens and maintains homeostasis through microbial regulation of mucosal innate and adaptive immunity (Renz et al., 2012). Recent evidence suggests that natural killer T cells (NKT cells), a subgroup of lipid-reactive T cells, play central roles in bidirectional interactions between the host and the commensal microbiota, which govern intestinal homeostasis and prevent inflammation. Here, we provide a brief overview of recently identified pathways of commensal microbial regulation of NKT cells, discuss feedback mechanisms of NKT cell-dependent control of microbial colonization and composition, and highlight the critical role of host-microbial cross-talk for prevention of NKT cell-dependent mucosal inflammation.
Collapse
Affiliation(s)
- C Marie Dowds
- Department of Internal Medicine I, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Richard S Blumberg
- Division of Gastroenterology, Hepatology, and Endoscopy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Sebastian Zeissig
- Department of Internal Medicine I, University Medical Center Schleswig-Holstein, Kiel, Germany; Department of Medicine I, University Medical Center Dresden, Technical University Dresden, Dresden, Germany; Center for Regenerative Therapies Dresden (CRTD), Technical University Dresden, Dresden, Germany.
| |
Collapse
|
41
|
Kronenberg M, Lantz O. Mucosal-Resident T Lymphocytes with Invariant Antigen Receptors. Mucosal Immunol 2015. [DOI: 10.1016/b978-0-12-415847-4.00036-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
42
|
Abstract
: Crohn's disease (CD) is a lifelong inflammatory condition with underlying environmental and genetic components. CD affects multiple parts of the gastrointestinal tract, and it has a growing incidence in Western societies. IL-23 receptor variants have been identified as susceptibility or resistance factors for CD in genome-wide association studies. Accordingly, IL-23 is required for the development of experimental inflammatory bowel disease in many murine models. IL-23 receptor is expressed by both innate and adaptive immune cells, which include Th17, natural killer T, γδ T cells, and RORγt innate lymphoid cells all of which are capable of secreting IL-17A, IL-17F, IL-22, and interferon-γ upon IL-23 stimulation. During the past decade, pathogenic and protective roles have been described for these cytokines in the inflammatory bowel disease pathogenesis. More recently, innate lymphoid cells have been implicated in disease development. In this review, we have summarized and discussed these findings with an emphasis not only on the contribution of Th17 but also on innate lymphoid cells to disease etiology.
Collapse
Affiliation(s)
- Ahmet Eken
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, WA 98101, USA
| | - Akhilesh K Singh
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, WA 98101, USA
| | - Mohamed Oukka
- Seattle Children's Research Institute, Center for Immunity and Immunotherapies, Seattle, WA 98101, USA
- University of Washington, Department of Immunology, Seattle, WA 98105, USA
| |
Collapse
|
43
|
Dowds CM, Kornell SC, Blumberg RS, Zeissig S. Lipid antigens in immunity. Biol Chem 2014; 395:61-81. [PMID: 23999493 PMCID: PMC4128234 DOI: 10.1515/hsz-2013-0220] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Accepted: 08/27/2013] [Indexed: 02/07/2023]
Abstract
Lipids are not only a central part of human metabolism but also play diverse and critical roles in the immune system. As such, they can act as ligands of lipid-activated nuclear receptors, control inflammatory signaling through bioactive lipids such as prostaglandins, leukotrienes, lipoxins, resolvins, and protectins, and modulate immunity as intracellular phospholipid- or sphingolipid-derived signaling mediators. In addition, lipids can serve as antigens and regulate immunity through the activation of lipid-reactive T cells, which is the topic of this review. We will provide an overview of the mechanisms of lipid antigen presentation, the biology of lipid-reactive T cells, and their contribution to immunity.
Collapse
Affiliation(s)
- C. Marie Dowds
- Department of Internal Medicine I, University Medical Center
Schleswig-Holstein, Schittenhelmstraße 12, D-24105 Kiel,
Germany
| | - Sabin-Christin Kornell
- Department of Internal Medicine I, University Medical Center
Schleswig-Holstein, Schittenhelmstraße 12, D-24105 Kiel,
Germany
| | - Richard S. Blumberg
- Division of Gastroenterology, Hepatology, and Endoscopy, Brigham
and Women’s Hospital, Harvard Medical School, 75 Francis Street,
Boston, MA 02115, USA
| | - Sebastian Zeissig
- Department of Internal Medicine I, University Medical Center
Schleswig-Holstein, Schittenhelmstraße 12, D-24105 Kiel,
Germany
| |
Collapse
|
44
|
Zeissig S, Blumberg RS. Commensal microbiota and NKT cells in the control of inflammatory diseases at mucosal surfaces. Curr Opin Immunol 2013; 25:690-6. [PMID: 24210255 PMCID: PMC3867259 DOI: 10.1016/j.coi.2013.09.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 09/09/2013] [Accepted: 09/18/2013] [Indexed: 12/13/2022]
Abstract
Natural Killer T (NKT) cells are a phenotypically and functionally diverse subset of T cells, which recognizes self- and microbial lipids in the context of the atypical MHC class I molecule CD1d. NKT cells exhibit potent effector functions and play critical roles in antimicrobial defense, cancer immunosurveillance and the modulation of immune-mediated disorders. Recent evidence has revealed extensive cross-regulation between the mucosal microbiota and CD1d as well as NKT cells. Microbial exposure at mucosal surfaces, particularly during early postnatal development, regulates NKT cell trafficking and function in the intestine and the lung and determines the susceptibility to NKT cell-mediated inflammatory disorders. Conversely, CD1d controls the composition of the intestinal microbiota; perhaps through the regulation of Paneth cell function. Here, we provide an overview of recent findings on the crosstalk between the microbiota and NKT cells and discuss the implication for mucosal homeostasis and its dysregulation in inflammatory disorders.
Collapse
Affiliation(s)
- Sebastian Zeissig
- Department of Internal Medicine I, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Richard S. Blumberg
- Division of Gastroenterology, Hepatology, and Endoscopy, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| |
Collapse
|
45
|
Stocker BL, Timmer MSM. Chemical Tools for Studying the Biological Function of Glycolipids. Chembiochem 2013; 14:1164-84. [DOI: 10.1002/cbic.201300064] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Indexed: 01/04/2023]
|
46
|
Abstract
CD1d-restricted natural killer T (NKT) cells are a distinct subset of T cells that rapidly produce an array of cytokines on activation and play a critical role in regulating various immune responses. NKT cells are classified into 2 groups based on differences in T-cell receptor usage. Type I NKT cells have an invariant T-cell receptor α-chain and are readily detectable by α-galactosylceramide (α-GalCer)-loaded CD1d tetramers. Type II NKT cells have a more diverse T-cell receptor repertoire and cannot be directly identified. Both types of NKT cells and multiple CD1d-expressing cell types are present in the intestine, and their interactions are likely to be modulated by pathogenic and commensal microbes, which in turn contribute to the intestinal immune responses in health and disease. Indeed, in several animal models of inflammatory bowel disease, type I NKT cells have been shown to make both protective and pathogenic contributions to disease. In contrast, in patients with ulcerative colitis, and a mouse model in which both CD1d expression and the frequency of type II NKT cells are increased, type II NKT cells seem to promote intestinal inflammation. In this review, we summarize the present knowledge on the antigen recognition, activation, and function of NKT cells with a particular focus on their role in inflammatory bowel disease and discuss factors that may influence the functional outcome of NKT cell responses in intestinal inflammation.
Collapse
|
47
|
Montbarbon M, Pichavant M, Langlois A, Erdual E, Maggiotto F, Neut C, Mallevaey T, Dharancy S, Dubuquoy L, Trottein F, Cortot A, Desreumaux P, Gosset P, Bertin B. Colonic inflammation in mice is improved by cigarette smoke through iNKT cells recruitment. PLoS One 2013; 8:e62208. [PMID: 23638007 PMCID: PMC3636205 DOI: 10.1371/journal.pone.0062208] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 03/18/2013] [Indexed: 02/07/2023] Open
Abstract
Cigarette smoke (CS) protects against intestinal inflammation during ulcerative colitis. Immunoregulatory mechanisms sustaining this effect remain unknown. The aim of this study was to assess the effects of CS on experimental colitis and to characterize the intestinal inflammatory response at the cellular and molecular levels. Using the InExpose® System, a smoking device accurately reproducing human smoking habit, we pre-exposed C57BL/6 mice for 2 weeks to CS, and then we induced colitis by administration of dextran sodium sulfate (DSS). This system allowed us to demonstrate that CS exposure improved colonic inflammation (significant decrease in clinical score, body weight loss and weight/length colonic ratio). This improvement was associated with a significant decrease in colonic proinflammatory Th1/Th17 cytokine expression, as compared to unexposed mice (TNF (p=0.0169), IFNγ (p<0.0001), and IL-17 (p=0.0008)). Smoke exposure also induced an increased expression of IL-10 mRNA (p=0.0035) and a marked recruitment of iNKT (invariant Natural Killer T; CD45+ TCRβ+ CD1d tetramer+) cells in the colon of DSS-untreated mice. Demonstration of the role of iNKT cells in CS-dependent colitis improvement was performed using two different strains of NKT cells deficient mice. Indeed, in Jα18KO and CD1dKO animals, CS exposure failed to induce significant regulation of DSS-induced colitis both at the clinical and molecular levels. Thus, our study demonstrates that iNKT cells are pivotal actors in the CS-dependent protection of the colon. These results highlight the role of intestinal iNKT lymphocytes and their responsiveness to environmental stimuli. Targeting iNKT cells would represent a new therapeutic way for inflammatory bowel diseases.
Collapse
Affiliation(s)
- Muriel Montbarbon
- Université Lille Nord de France, Lille, France
- Inserm U995, F-59045 Lille, France
| | - Muriel Pichavant
- Université Lille Nord de France, Lille, France
- LI3- Team 8, Centre d’Infection et d’Immunité de Lille; Institut Pasteur de Lille, Lille, France
- Inserm U1019, Lille, France
- CNRS, UMR 8204, Lille, France
| | - Audrey Langlois
- Université Lille Nord de France, Lille, France
- Inserm U995, F-59045 Lille, France
| | - Edmone Erdual
- Université Lille Nord de France, Lille, France
- Inserm U995, F-59045 Lille, France
| | - François Maggiotto
- Université Lille Nord de France, Lille, France
- Inserm U995, F-59045 Lille, France
| | - Christel Neut
- Université Lille Nord de France, Lille, France
- Inserm U995, F-59045 Lille, France
- UDSL, Faculté des Sciences Pharmaceutiques et Biologiques, Lille, France
| | | | - Sébastien Dharancy
- Université Lille Nord de France, Lille, France
- CHU Lille, Service des Maladies de l’Appareil Digestif et de la Nutrition, Hôpital Claude Huriez, Lille, France
| | - Laurent Dubuquoy
- Université Lille Nord de France, Lille, France
- Inserm U995, F-59045 Lille, France
| | - François Trottein
- Université Lille Nord de France, Lille, France
- LI3- Team 8, Centre d’Infection et d’Immunité de Lille; Institut Pasteur de Lille, Lille, France
- Inserm U1019, Lille, France
- CNRS, UMR 8204, Lille, France
| | - Antoine Cortot
- Université Lille Nord de France, Lille, France
- Inserm U995, F-59045 Lille, France
- CHU Lille, Service des Maladies de l’Appareil Digestif et de la Nutrition, Hôpital Claude Huriez, Lille, France
| | - Pierre Desreumaux
- Université Lille Nord de France, Lille, France
- Inserm U995, F-59045 Lille, France
- CHU Lille, Service des Maladies de l’Appareil Digestif et de la Nutrition, Hôpital Claude Huriez, Lille, France
| | - Philippe Gosset
- Université Lille Nord de France, Lille, France
- LI3- Team 8, Centre d’Infection et d’Immunité de Lille; Institut Pasteur de Lille, Lille, France
- Inserm U1019, Lille, France
- CNRS, UMR 8204, Lille, France
| | - Benjamin Bertin
- Université Lille Nord de France, Lille, France
- Inserm U995, F-59045 Lille, France
- UDSL, Faculté des Sciences Pharmaceutiques et Biologiques, Lille, France
| |
Collapse
|
48
|
|
49
|
Schouten B, van Esch BCAM, Lim SM, Hofman GA, Knippels LMJ, Willemsen LEM, Vos AP, Garssen J. Invariant natural killer T cells contribute to the allergic response in cow's milk protein-sensitized mice. Int Arch Allergy Immunol 2012; 159:51-9. [PMID: 22555211 DOI: 10.1159/000335242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Accepted: 11/17/2011] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Little is known about the contribution of the invariant natural killer T (iNKT) cells in the onset of food allergy. Using a mouse model for cow's milk allergy the function of iNKT cells was investigated. METHODS Mice were sensitized orally with casein or whey proteins. One hour before the sensitizations the mice were injected intraperitoneally with α-galactosylceramide (αGalCer) or control. One week after the last sensitization acute allergic skin reactions were measured. Furthermore, in the liver, spleen and mesenteric lymph nodes (MLN) percentages of iNKT cells were analyzed and liver lymphocyte restimulation assays were performed. RESULTS Whey- or casein-sensitized mice treated with αGalCer showed enhanced acute allergic skin reactions. The percentage of iNKT cells in the liver of sensitized mice was reduced compared to sham-sensitized mice. αGalCer treatment was found to deplete iNKT cells in the liver of sensitized as well as sham-sensitized mice, and these hepatocytes did not respond to ex vivo restimulation with αGalCer. αGalCer treatment did not reduce iNKT cell percentages in the spleen and MLN of sham-sensitized mice but abrogated the increase in iNKT cell percentage in the spleen upon whey sensitization, whereas it enhanced the iNKT cell percentage in the MLN of casein-sensitized mice. Due to the repeated application of αGalCer, livers were functionally depleted of iNKT cells. This resulted in an increased allergic effector response which was most pronounced in whey-sensitized mice and associated with enhanced whey-specific immunoglobulin levels. CONCLUSION iNKT cells may suppress cow's milk allergic symptoms in mice and may differentially regulate oral sensitization for casein and whey.
Collapse
Affiliation(s)
- Bastiaan Schouten
- Department of Pharmacology and Pathophysiology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Immunoregulatory mechanisms underlying prevention of colitis-associated colorectal cancer by probiotic bacteria. PLoS One 2012; 7:e34676. [PMID: 22511958 PMCID: PMC3325233 DOI: 10.1371/journal.pone.0034676] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Accepted: 03/06/2012] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Inflammatory bowel disease (IBD) increases the risk of colorectal cancer. Probiotic bacteria produce immunoregulatory metabolites in vitro such as conjugated linoleic acid (CLA), a polyunsaturated fatty acid with potent anti-carcinogenic effects. This study aimed to investigate the cellular and molecular mechanisms underlying the efficacy of probiotic bacteria in mouse models of cancer. METHODOLOGY/PRINCIPAL FINDINGS The immune modulatory mechanisms of VSL#3 probiotic bacteria and CLA were investigated in mouse models of inflammation-driven colorectal cancer. Colonic specimens were collected for histopathology, gene expression and flow cytometry analyses. Immune cell subsets in the mesenteric lymph nodes (MLN), spleen and colonic lamina propria lymphocytes (LPL) were phenotypically and functionally characterized. Mice treated with CLA or VSL#3 recovered faster from the acute inflammatory phase of disease and had lower disease severity in the chronic, tumor-bearing phase of disease. Adenoma and adenocarcinoma formation was also diminished by both treatments. VSL#3 increased the mRNA expression of TNF-α, angiostatin and PPAR γ whereas CLA decreased COX-2 levels. Moreover, VSL#3-treated mice had increased IL-17 expression in MLN CD4+ T cells and accumulation of Treg LPL and memory CD4+ T cells. CONCLUSIONS/SIGNIFICANCE Both CLA and VSL#3 suppressed colon carcinogenesis, although VSL#3 showed greater anti-carcinogenic and anti-inflammatory activities than CLA. Mechanistically, CLA modulated expression of COX-2 levels in the colonic mucosa, whereas VSL#3 targeted regulatory mucosal CD4+ T cell responses.
Collapse
|