1
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Lee JE, Lee JH, Koh JM, Im DS. Free Fatty Acid 4 Receptor Activation Attenuates Collagen-Induced Arthritis by Rebalancing Th1/Th17 and Treg Cells. Int J Mol Sci 2024; 25:5866. [PMID: 38892051 PMCID: PMC11172425 DOI: 10.3390/ijms25115866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/22/2024] [Accepted: 05/25/2024] [Indexed: 06/21/2024] Open
Abstract
Dietary supplementation with n-3 polyunsaturated fatty acids (PUFA) has been found to be beneficial in rodent rheumatoid arthritis models and human trials. However, the molecular targets of n-3 PUFAs and their beneficial effects on rheumatoid arthritis are under-researched. Free fatty acid receptor 4 (FFA4, also known as GPR120) is a receptor for n-3 PUFA. We aim to investigate whether FFA4 activation reduces collagen-induced rheumatoid arthritis (CIA) by using an FFA4 agonist, compound A (CpdA), in combination with DBA-1J Ffa4 gene wild-type (WT) and Ffa4 gene knock-out (KO) mice. CIA induced an increase in the arthritis score, foot edema, synovial hyperplasia, pannus formation, proteoglycan loss, cartilage damage, and bone erosion, whereas the administration of CpdA significantly suppressed those increases in Ffa4 WT mice but not Ffa4 gene KO mice. CIA increased mRNA expression levels of pro-inflammatory Th1/Th17 cytokines, whereas CpdA significantly suppressed those increases in Ffa4 WT mice but not Ffa4 gene KO mice. CIA induced an imbalance between Th1/Th17 and Treg cells, whereas CpdA rebalanced them in spleens from Ffa4 WT mice but not Ffa4 gene KO mice. In SW982 synovial cells, CpdA reduced the LPS-induced increase in pro-inflammatory cytokine levels. In summary, the present results suggest that the activation of FFA4 in immune and synovial cells could suppress the characteristics of rheumatoid arthritis and be an adjuvant therapy.
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MESH Headings
- Animals
- Arthritis, Experimental/pathology
- Arthritis, Experimental/immunology
- Arthritis, Experimental/metabolism
- Arthritis, Experimental/drug therapy
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
- Th17 Cells/immunology
- Th17 Cells/metabolism
- Th17 Cells/drug effects
- Receptors, G-Protein-Coupled/metabolism
- Receptors, G-Protein-Coupled/genetics
- Receptors, G-Protein-Coupled/agonists
- Mice
- Th1 Cells/immunology
- Th1 Cells/metabolism
- Th1 Cells/drug effects
- Mice, Knockout
- Mice, Inbred DBA
- Arthritis, Rheumatoid/metabolism
- Arthritis, Rheumatoid/drug therapy
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/pathology
- Male
- Cytokines/metabolism
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Affiliation(s)
- Jung-Eun Lee
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.-E.L.); (J.-H.L.)
| | - Ju-Hyun Lee
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.-E.L.); (J.-H.L.)
| | - Jung-Min Koh
- Division of Endocrinology and Metabolism, Asan Medical Center, College of Medicine, University of Ulsan, Seoul 05505, Republic of Korea;
| | - Dong-Soon Im
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; (J.-E.L.); (J.-H.L.)
- Division of Endocrinology and Metabolism, Asan Medical Center, College of Medicine, University of Ulsan, Seoul 05505, Republic of Korea;
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2
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Crestani E, Benamar M, Phipatanakul W, Rachid R, Chatila TA. Age-specific Metabolomic profiles in children with food allergy. Clin Immunol 2024; 261:109928. [PMID: 38336145 PMCID: PMC10947862 DOI: 10.1016/j.clim.2024.109928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/30/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND Food allergy (FA) in young children is often associated with eczema, frequently directed to egg/cow milk allergens and has a higher chance of resolution, while FA that persists in older children has less chance of resolution and is less clearly associated with atopy. METHODS Children with FA (n = 62) and healthy controls (n = 28) were categorized into "younger" (≤5 years) and "older" (>5 years). Mass spectrometry-based untargeted metabolomic profiling as wells as cytokine profiling were performed on plasma samples in FA children in each age group. RESULTS Younger FA children manifested unique alterations in bile acids, polyamine metabolites and chemokines associated with Th2 responses, while older FA children displayed pronounced changes in long chain fatty acids, acylcarnitines and proinflammatory cytokines. CONCLUSIONS FA children of different ages manifest unique metabolic changes which may reflect at least in part pathogenic mechanisms and environmental influences operative at different time points in the disease course.
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Affiliation(s)
- E Crestani
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - M Benamar
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - W Phipatanakul
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - R Rachid
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - T A Chatila
- Division of Immunology, Boston Children's Hospital and Department of Pediatrics, Harvard Medical School, Boston, MA, USA.
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3
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Acosta JE, Burns JL, Hillyer LM, Van K, Brendel EBK, Law C, Ma DWL, Monk JM. Effect of Lifelong Exposure to Dietary Plant and Marine Sources of n-3 Polyunsaturated Fatty Acids on Morphologic and Gene Expression Biomarkers of Intestinal Health in Early Life. Nutrients 2024; 16:719. [PMID: 38474847 DOI: 10.3390/nu16050719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024] Open
Abstract
Altered intestinal health is also associated with the incidence and severity of many chronic inflammatory conditions, which could be attenuated via dietary n-3 PUFA interventions. However, little is known about the effect of lifelong exposure to n-3 PUFA from plant and marine sources (beginning in utero via the maternal diet) on early life biomarkers of intestinal health. Harems of C57Bl/6 mice were randomly assigned to one of three isocaloric AIN-93G modified diets differing in their fat sources consisting of the following: (i) 10% safflower oil (SO, enriched in n-6 PUFA), (ii) 3% flaxseed oil + 7% safflower oil (FX, plant-based n-3 PUFA-enriched diet), or (iii) 3% menhaden fish oil + 7% safflower oil (MO, marine-based n-3 PUFA-enriched diet). Mothers remained on these diets throughout pregnancy and offspring (n = 14/diet) continued on the same parental diet until termination at 3 weeks of age. In ileum, villi:crypt length ratios were increased in both the FX and MO dietary groups compared to SO (p < 0.05). Ileum mRNA expression of critical intestinal health biomarkers was increased by both n-3 PUFA-enriched diets including Relmβ and REG3γ compared to SO (p < 0.05), whereas only the FX diet increased mRNA expression of TFF3 and Muc2 (p < 0.05) and only the MO diet increased mRNA expression of ZO-1 (p < 0.05). In the proximal colon, both the FX and MO diets increased crypt lengths compared to SO (p < 0.05), whereas only the MO diet increased goblet cell numbers compared to SO (p < 0.05). Further, the MO diet increased proximal colon mRNA expression of Relmβ and REG3γ (p < 0.05) and both MO and FX increased mRNA expression of Muc2 compared to SO (p < 0.05). Collectively, these results demonstrate that lifelong exposure to dietary n-3 PUFA, beginning in utero, from both plant and marine sources, can support intestinal health development in early life. The differential effects between plant and marine sources warrants further investigation for optimizing health.
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Affiliation(s)
- Julianna E Acosta
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Jessie L Burns
- Department of Health Sciences, Carleton University, Ottawa, ON K1S 5B6, Canada
| | - Lyn M Hillyer
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Kelsey Van
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Elaina B K Brendel
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Camille Law
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - David W L Ma
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Jennifer M Monk
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON N1G 2W1, Canada
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4
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Peng D, Wang Y, Yao Y, Yang Z, Wu S, Zeng K, Hu X, Zhao Y. Long-chain polyunsaturated fatty acids influence colorectal cancer progression via the interactions between the intestinal microflora and the macrophages. Mol Cell Biochem 2024:10.1007/s11010-023-04904-y. [PMID: 38217838 DOI: 10.1007/s11010-023-04904-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 11/15/2023] [Indexed: 01/15/2024]
Abstract
The metabolism of long-chain polyunsaturated fatty acids (LCPUFAs) is closely associated with the risk and progression of colorectal cancer (CRC). This paper aims to investigate the role of LCPUFA in the crosstalk between intestinal microflora and macrophages, as well as the effects of these three parties on the progression of CRC. The metabolism and function of LCPUFA play important roles in regulating the composition of the human gut microflora and participating in the regulation of inflammation, ultimately affecting macrophage function and polarization, which is crucial in the tumor microenvironment. The effects of LCPUFA on cellular interactions between the two species can ultimately influence the progression of CRC. In this review, we explore the molecular mechanisms and clinical applications of LCPUFA in the interactions between intestinal microflora and intestinal macrophages, as well as its significance for CRC progression. Furthermore, we reveal the role of LCPUFA in the construction of the CRC microenvironment and explore the key nodes of the interactions between intestinal flora and intestinal macrophages in the environment. It provides potential targets for the metabolic diagnosis and treatment of CRC.
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Affiliation(s)
- Duo Peng
- Pathology Department of The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523713, China
- School of Medical Technology, Guangdong Medical University, Dongguan, 523808, China
| | - Yan Wang
- Pathology Department of The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523713, China
- Microbiology and Immunology Department, Guangdong Medical University, Dongguan, 523808, China
| | - Yunhong Yao
- Pathology Department of The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523713, China
- Pathology Department, Guangdong Medical University, Dongguan, 523808, China
| | - Zisha Yang
- School of Medical Technology, Guangdong Medical University, Dongguan, 523808, China
| | - Shuang Wu
- Pathology Department, Guangdong Medical University, Dongguan, 523808, China
| | - Kaijing Zeng
- Pathology Department, Guangdong Medical University, Dongguan, 523808, China
| | - Xinrong Hu
- Pathology Department of The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523713, China.
- Pathology Department, Guangdong Medical University, Dongguan, 523808, China.
| | - Yi Zhao
- Pathology Department of The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523713, China.
- Microbiology and Immunology Department, Guangdong Medical University, Dongguan, 523808, China.
- School of Medical Technology, Guangdong Medical University, Dongguan, 523808, China.
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5
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Morin S, Bélanger S, Cortez Ghio S, Pouliot R. Eicosapentaenoic acid reduces the proportion of IL-17A-producing T cells in a 3D psoriatic skin model. J Lipid Res 2023; 64:100428. [PMID: 37597582 PMCID: PMC10509711 DOI: 10.1016/j.jlr.2023.100428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 08/03/2023] [Accepted: 08/11/2023] [Indexed: 08/21/2023] Open
Abstract
Psoriasis is a skin disease presenting as erythematous lesions with accentuated proliferation of epidermal keratinocytes, infiltration of leukocytes, and dysregulated lipid metabolism. T cells play essential roles in the disease. n-3 polyunsaturated fatty acids are anti-inflammatory metabolites, which exert an immunosuppressive effect on healthy T cells. However, the precise mechanistic processes of n-3 polyunsaturated fatty acids on T cells in psoriasis are still unrevealed. In this study, we aimed to evaluate the action of eicosapentaenoic acid (EPA) on T cells in a psoriatic skin model produced with T cells. A coculture of psoriatic keratinocytes and polarized T cells was prepared using culture media, which was either supplemented with 10 μM EPA or left unsupplemented. Healthy and psoriatic skin substitutes were produced according to the self-assembly method. In the coculture model, EPA reduced the proportion of IL-17A-positive cells, while increasing that of FOXP3-positive cells, suggesting an increase in the polarization of regulatory T cells. In the 3D psoriatic skin model, EPA normalized the proliferation of psoriatic keratinocytes and diminished the levels of IL-17A. The expression of the proteins of the signal transducer and activator of transcription was influenced following EPA supplementation with downregulation of the phosphorylation levels of signal transducer and activator of transcription 3 in the dermis. Finally, the NFκB signaling pathway was modified in the EPA-supplemented substitutes with an increase in Fas amounts. Ultimately, our results suggest that in this psoriatic model, EPA exerts its anti-inflammatory action by decreasing the proportion of IL-17A-producing T cells.
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Affiliation(s)
- Sophie Morin
- Center for Research in Experimental Organogenesis of Laval University/LOEX, Regenerative Medicine Axis, CHU of Quebec/Laval University Research Center, Qu ebec, QC, Canada; Faculty of Pharmacy, Laval University, Quebec, QC, Canada
| | - Sarah Bélanger
- Center for Research in Experimental Organogenesis of Laval University/LOEX, Regenerative Medicine Axis, CHU of Quebec/Laval University Research Center, Qu ebec, QC, Canada; Faculty of Pharmacy, Laval University, Quebec, QC, Canada
| | | | - Roxane Pouliot
- Center for Research in Experimental Organogenesis of Laval University/LOEX, Regenerative Medicine Axis, CHU of Quebec/Laval University Research Center, Qu ebec, QC, Canada; Faculty of Pharmacy, Laval University, Quebec, QC, Canada.
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6
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Rohwer N, Jelleschitz J, Höhn A, Weber D, Kühl AA, Wang C, Ohno RI, Kampschulte N, Pietzner A, Schebb NH, Weylandt KH, Grune T. Prevention of colitis-induced liver oxidative stress and inflammation in a transgenic mouse model with increased omega-3 polyunsaturated fatty acids. Redox Biol 2023; 64:102803. [PMID: 37392516 DOI: 10.1016/j.redox.2023.102803] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/22/2023] [Accepted: 06/26/2023] [Indexed: 07/03/2023] Open
Abstract
Inflammatory bowel disease (IBD) is an immune-mediated gut dysfunction, which might also be associated with an inflammatory phenotype in the liver. It is known that the nutritional intake of omega-3 polyunsaturated fatty acids (n-3 PUFA) is inversely correlated to the severity and occurrence of IBD. In order to investigate whether n-3 PUFA can also reduce liver inflammation and oxidative liver damage due to colon inflammation, we explored the dextran sulfate sodium (DSS)-induced colitis model in wild-type and fat-1 mice with endogenously increased n-3 PUFA tissue content. Besides confirming previous data of alleviated DSS-induced colitis in the fat-1 mouse model, the increase of n-3 PUFA also resulted in a significant reduction of liver inflammation and oxidative damage in colitis-affected fat-1 mice as compared to wild-type littermates. This was accompanied by a remarkable increase of established inflammation-dampening n-3 PUFA oxylipins, namely docosahexaenoic acid-derived 19,20-epoxydocosapentaenoic acid and eicosapentaenoic acid-derived 15-hydroxyeicosapentaenoic acid and 17,18-epoxyeicosatetraenoic acid. Taken together, these observations demonstrate a strong inverse correlation between the anti-inflammatory lipidome derived from n-3 PUFA and the colitis-triggered inflammatory changes in the liver by reducing oxidative liver stress.
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Affiliation(s)
- Nadine Rohwer
- Medical Department B, Division of Hepatology, Gastroenterology, Oncology, Hematology, Palliative Care, Endocrinology and Diabetes, University Hospital Ruppin-Brandenburg, Brandenburg Medical School, Neuruppin, Germany; Faculty of Health Sciences, Joint Faculty of the Brandenburg University of Technology Cottbus-Senftenberg, Brandenburg Medical School and University of Potsdam, Potsdam, Germany; Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Julia Jelleschitz
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Annika Höhn
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany; German Center for Diabetes Research (DZD), Muenchen-Neuherberg, Germany
| | - Daniela Weber
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Anja A Kühl
- iPATH.Berlin-Immunopathology for Experimental Models, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Chaoxuan Wang
- Medical Department B, Division of Hepatology, Gastroenterology, Oncology, Hematology, Palliative Care, Endocrinology and Diabetes, University Hospital Ruppin-Brandenburg, Brandenburg Medical School, Neuruppin, Germany; Faculty of Health Sciences, Joint Faculty of the Brandenburg University of Technology Cottbus-Senftenberg, Brandenburg Medical School and University of Potsdam, Potsdam, Germany; Medical Department, Division of Psychosomatic Medicine, Campus Benjamin Franklin, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Rei-Ichi Ohno
- University of Wuppertal, Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, Wuppertal, Germany
| | - Nadja Kampschulte
- University of Wuppertal, Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, Wuppertal, Germany
| | - Anne Pietzner
- Medical Department B, Division of Hepatology, Gastroenterology, Oncology, Hematology, Palliative Care, Endocrinology and Diabetes, University Hospital Ruppin-Brandenburg, Brandenburg Medical School, Neuruppin, Germany; Faculty of Health Sciences, Joint Faculty of the Brandenburg University of Technology Cottbus-Senftenberg, Brandenburg Medical School and University of Potsdam, Potsdam, Germany
| | - Nils Helge Schebb
- University of Wuppertal, Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, Wuppertal, Germany
| | - Karsten-H Weylandt
- Medical Department B, Division of Hepatology, Gastroenterology, Oncology, Hematology, Palliative Care, Endocrinology and Diabetes, University Hospital Ruppin-Brandenburg, Brandenburg Medical School, Neuruppin, Germany; Faculty of Health Sciences, Joint Faculty of the Brandenburg University of Technology Cottbus-Senftenberg, Brandenburg Medical School and University of Potsdam, Potsdam, Germany
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany; German Center for Diabetes Research (DZD), Muenchen-Neuherberg, Germany.
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7
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Dang Y, Ma C, Chen K, Chen Y, Jiang M, Hu K, Li L, Zeng Z, Zhang H. The Effects of a High-Fat Diet on Inflammatory Bowel Disease. Biomolecules 2023; 13:905. [PMID: 37371485 DOI: 10.3390/biom13060905] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 05/26/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
The interactions among diet, intestinal immunity, and microbiota are complex and play contradictory roles in inflammatory bowel disease (IBD). An increasing number of studies has shed light on this field. The intestinal immune balance is disrupted by a high-fat diet (HFD) in several ways, such as impairing the intestinal barrier, influencing immune cells, and altering the gut microbiota. In contrast, a rational diet is thought to maintain intestinal immunity by regulating gut microbiota. In this review, we emphasize the crucial contributions made by an HFD to the gut immune system and microbiota.
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Affiliation(s)
- Yuan Dang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Laboratory of Inflammatory Bowel Disease, Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Chunxiang Ma
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Laboratory of Inflammatory Bowel Disease, Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Kexin Chen
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Laboratory of Inflammatory Bowel Disease, Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yiding Chen
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Mingshan Jiang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Laboratory of Inflammatory Bowel Disease, Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Kehan Hu
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Laboratory of Inflammatory Bowel Disease, Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lili Li
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Laboratory of Inflammatory Bowel Disease, Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhen Zeng
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Laboratory of Inflammatory Bowel Disease, Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Hu Zhang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
- Centre for Inflammatory Bowel Disease, West China Hospital, Sichuan University, Chengdu 610041, China
- Laboratory of Inflammatory Bowel Disease, Institute of Immunology and Inflammation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, China
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8
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Kaliannan K, Donnell SO, Murphy K, Stanton C, Kang C, Wang B, Li XY, Bhan AK, Kang JX. Decreased Tissue Omega-6/Omega-3 Fatty Acid Ratio Prevents Chemotherapy-Induced Gastrointestinal Toxicity Associated with Alterations of Gut Microbiome. Int J Mol Sci 2022; 23:ijms23105332. [PMID: 35628140 PMCID: PMC9140600 DOI: 10.3390/ijms23105332] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/02/2022] [Accepted: 05/06/2022] [Indexed: 02/04/2023] Open
Abstract
Gastrointestinal toxicity (GIT) is a debilitating side effect of Irinotecan (CPT-11) and limits its clinical utility. Gut dysbiosis has been shown to mediate this side effect of CPT-11 by increasing gut bacterial β-glucuronidase (GUSB) activity and impairing the intestinal mucosal barrier (IMB). We have recently shown the opposing effects of omega-6 (n-6) and omega-3 (n-3) polyunsaturated fatty acids (PUFA) on the gut microbiome. We hypothesized that elevated levels of tissue n-3 PUFA with a decreased n-6/n-3 PUFA ratio would reduce CPT-11-induced GIT and associated changes in the gut microbiome. Using a unique transgenic mouse (FAT-1) model combined with dietary supplementation experiments, we demonstrate that an elevated tissue n-3 PUFA status with a decreased n-6/n-3 PUFA ratio significantly reduces CPT-11-induced weight loss, bloody diarrhea, gut pathological changes, and mortality. Gut microbiome analysis by 16S rRNA gene sequencing and QIIME2 revealed that improvements in GIT were associated with the reduction in the CPT-11-induced increase in both GUSB-producing bacteria (e.g., Enterobacteriaceae) and GUSB enzyme activity, decrease in IMB-maintaining bacteria (e.g., Bifidobacterium), IMB dysfunction and systemic endotoxemia. These results uncover a host–microbiome interaction approach to the management of drug-induced gut toxicity. The prevention of CPT-11-induced gut microbiome changes by decreasing the tissue n-6/n-3 PUFA ratio could be a novel strategy to prevent chemotherapy-induced GIT.
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Affiliation(s)
- Kanakaraju Kaliannan
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02129, USA; (K.K.); (B.W.); (X.-Y.L.)
| | - Shane O. Donnell
- School of Microbiology, University College Cork, T12 K8AF Cork, Ireland; (S.O.D.); (C.S.)
- Teagasc Moorepark Food Research Centre, Fermoy, P61 C996 Co. Cork, Ireland
- APC Microbiome Ireland, University College Cork, T12 YT20 Cork, Ireland;
| | - Kiera Murphy
- APC Microbiome Ireland, University College Cork, T12 YT20 Cork, Ireland;
| | - Catherine Stanton
- School of Microbiology, University College Cork, T12 K8AF Cork, Ireland; (S.O.D.); (C.S.)
- Teagasc Moorepark Food Research Centre, Fermoy, P61 C996 Co. Cork, Ireland
- APC Microbiome Ireland, University College Cork, T12 YT20 Cork, Ireland;
| | - Chao Kang
- Department of Nutrition, The General Hospital of Western Theater Command, Chengdu 610000, China;
| | - Bin Wang
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02129, USA; (K.K.); (B.W.); (X.-Y.L.)
| | - Xiang-Yong Li
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02129, USA; (K.K.); (B.W.); (X.-Y.L.)
| | - Atul K. Bhan
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA;
| | - Jing X. Kang
- Laboratory for Lipid Medicine and Technology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02129, USA; (K.K.); (B.W.); (X.-Y.L.)
- Correspondence: ; Tel.: +1-(617)-726-8509; Fax: +1-(617)-726-6144
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9
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Qiu J, Ma Y, Qiu J. Regulation of intestinal immunity by dietary fatty acids. Mucosal Immunol 2022; 15:846-856. [PMID: 35821290 DOI: 10.1038/s41385-022-00547-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/28/2022] [Accepted: 06/28/2022] [Indexed: 02/04/2023]
Abstract
Dietary fatty acids are absorbed through the intestine and are fundamental for cellular energy provision and structural formation. Dietary fatty acids profoundly affect intestinal immunity and influence the development and progression of inflammatory bowel disease, intestinal infections and tumors. Although different types of fatty acids exert differential roles in intestinal immunity, a western diet, rich in saturated fatty acids with abundant carbohydrates and studied as high-fat diet (HFD) in animal experiments, disturbs intestinal homeostasis and plays a pathogenic role in intestinal inflammatory diseases. Here, we review recent findings on the regulation of intestinal immunity by dietary fatty acids, focusing on HFD. We summarize HFD-altered immune responses leading to susceptibility to intestinal pathology and dissect the mechanisms involving the impact of HFD on immune cells, intestinal epithelial cells and the microbiota. Understanding the perturbation of intestinal immunity by HFD will provide new strategies for prevention and treatment of intestinal inflammatory diseases.
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Affiliation(s)
- Jinxin Qiu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yanhui Ma
- Department of Laboratory Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
| | - Ju Qiu
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
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10
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Soares IP, Oliveira BAC, Baal SCS, Donatti L, Ingberman M, Beirão BCB, Appel MH, Fernandes LC. Fish oil supplementation enhances colon recovery after experimental colitis. Prostaglandins Leukot Essent Fatty Acids 2020; 163:102212. [PMID: 33249348 DOI: 10.1016/j.plefa.2020.102212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Fish oil (FO) has an anti-inflammatory and pro-resolution activity and it has been used to restore physiological disturbances on inflammatory conditions. Here, we investigate whether FO supplementation could, acutely, prevent or restore inflammatory damages on experimental colitis. METHODS Wistar rats orally received 2 g.kg-1.day-1 of FO for 30 days before induction of experimental colitis. Specimens were collected on the 2nd and 7th days after colitis-induction and intestinal mucus, inflammatory activity and colon integrity were determined. RESULTS Experimental colitis did cause colon disruption and FO, acutely, did not prevent the loss of intestinal and fecal mucus, neither the increase of inflammatory activity and intestinal permeability. On the 7th day of colitis, FO soften the perturbations of experimental colitis, increasing histological and fecal mucus and, also decreased inflammatory activity, but this was not accompanied by intestinal permeability. CONCLUSION FO did not protect, acutely, intestinal damages from experimental colitis, but at long run promotes higher intestinal recovery.
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Affiliation(s)
| | - Bruna A C Oliveira
- Department of Molecular Biology, Federal University of Parana, Curitiba, Brazil
| | - Suelen C S Baal
- Department of Physiology, Federal University of Parana, Curitiba, Brazil
| | - Lucelia Donatti
- Department of Molecular Biology, Federal University of Parana, Curitiba, Brazil
| | | | - Breno C B Beirão
- Department of Pathology, Federal University of Parana, Curitiba, Brazil
| | - Marcia H Appel
- Department of Genetics, Structural and Molecular Biology, State University of Ponta Grossa, Ponta Grossa, Brazil
| | - Luiz C Fernandes
- Department of Physiology, Federal University of Parana, Curitiba, Brazil
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11
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The Role of Long-Chain Fatty Acids in Inflammatory Bowel Disease. Mediators Inflamm 2019; 2019:8495913. [PMID: 31780872 PMCID: PMC6874876 DOI: 10.1155/2019/8495913] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/03/2019] [Indexed: 02/05/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a complicated disease involving multiple pathogenic factors. The complex relationships between long-chain fatty acids (LCFAs) and the morbidity of IBD drive numerous studies to unravel the underlying mechanisms. A better understanding of the role of LCFAs in IBD will substitute or boost the current IBD therapies, thereby obtaining mucosal healing. In this review, we focused on the roles of LCFAs on the important links of inflammatory regulation in IBD, including in the pathogen recognition phase and in the inflammatory resolving phase, and the effects of LCFAs on immune cells in IBD.
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12
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Endogenous n-3 Polyunsaturated Fatty Acids Are Beneficial to Dampen CD8 + T Cell-Mediated Inflammatory Response upon the Viral Infection in Mice. Int J Mol Sci 2019; 20:ijms20184510. [PMID: 31547227 PMCID: PMC6770599 DOI: 10.3390/ijms20184510] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/06/2019] [Accepted: 09/10/2019] [Indexed: 11/16/2022] Open
Abstract
Omega-3 (n-3) polyunsaturated fatty acids (PUFAs) have been known to exert anti-inflammatory effects on various disease states. However, its effect on CD8+ T cell-mediated immunopathology upon viral infection has not been well elucidated yet. In this study, we investigated the possible implication of n-3 PUFAs in CD8+ T cell responses against an acute viral infection. Infection of FAT-1 transgenic mice that are capable of synthesizing n-3 PUFAs from n-6 PUFAs with lymphocytic choriomeningitis virus (LCMV) resulted in significant reduction of anti-viral CD8+ T cell responses. Interestingly, expansion of adoptively transferred wild-type (WT) LCMV-specific T cell receptor (TCR) transgenic CD8+ (P14) T cells into FAT-1 mice was significantly decreased. Also, activation of anti-viral CD4+ helper T cells was reduced in FAT-1 mice. Importantly, P14 cells carrying the fat-1 gene that were adoptively transferred into WT mice exhibited a substantially decreased ability to proliferate and produce cytokines against LCMV infection. Together, n-3 PUFAs attenuated anti-viral CD8+ T cell responses against an acute viral infection and thus could be used to alleviate immunopathology mediated by the viral infection.
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13
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Hosseinzade A, Sadeghi O, Naghdipour Biregani A, Soukhtehzari S, Brandt GS, Esmaillzadeh A. Immunomodulatory Effects of Flavonoids: Possible Induction of T CD4+ Regulatory Cells Through Suppression of mTOR Pathway Signaling Activity. Front Immunol 2019; 10:51. [PMID: 30766532 PMCID: PMC6366148 DOI: 10.3389/fimmu.2019.00051] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 01/09/2019] [Indexed: 12/12/2022] Open
Abstract
The increasing rate of autoimmune disorders and cancer in recent years has been a controversial issue in all aspects of prevention, diagnosis, prognosis and treatment. Among dietary factors, flavonoids have specific immunomodulatory effects that might be of importance to several cancers. Over different types of immune cells, T lymphocytes play a critical role in protecting the immune system as well as in the pathogenesis of specific autoimmune diseases. One of the important mediators of metabolism and immune system is mTOR, especially in T lymphocytes. In the current review, we assessed the effects of flavonoids on the immune system and then their impact on the mTOR pathway. Flavonoids can suppress mTOR activity and are consequently able to induce the T regulatory subset.
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Affiliation(s)
- Aysooda Hosseinzade
- Department of Immunology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Omid Sadeghi
- Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Akram Naghdipour Biregani
- Department of Nutrition, School of Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Sepideh Soukhtehzari
- Department of Pharmaceutical Science, University of British Columbia, Vancouver, BC, Canada
| | - Gabriel S Brandt
- Department of Chemistry, Franklin & Marshall College,, Lancaster, PA, United States
| | - Ahmad Esmaillzadeh
- Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Obesity and Eating Habits Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.,Department of Community Nutrition, Food Security Research Center, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
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14
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Kim JY, Lim K, Kim KH, Kim JH, Choi JS, Shim SC. N-3 polyunsaturated fatty acids restore Th17 and Treg balance in collagen antibody-induced arthritis. PLoS One 2018; 13:e0194331. [PMID: 29543869 PMCID: PMC5854360 DOI: 10.1371/journal.pone.0194331] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 03/01/2018] [Indexed: 12/22/2022] Open
Abstract
N-3 polyunsaturated fatty acids (PUFA) have anti-inflammatory effects and were considered useful for the treatment of rheumatoid arthritis (RA). Recently, several studies suggested that n-3 PUFAs attenuated arthritis in animal model and human, however the mechanism is still unclear. Interleukin 17 (IL-17) is a pro-inflammatory cytokine mainly produced by T helper 17 (Th17) cells which cause tissue inflammation and bone erosion leading to joint destruction. In contrast, regulatory T (Treg) cells down-regulate various immune responses by suppression of naïve T cells. The imbalance between Th17 cells and Tregs cell is important for the pathogenesis of RA. Here, we investigated whether n-3 PUFAs attenuate arthritis in collagen antibody-induced arthritis (CAIA) model. We used fat-1 transgenic mice expressing the Caenorhabditis elegans fat-1 gene encoding an n-3 fatty acid desaturase that converts n-6 to n-3 fatty acids, leading to abundant n-3 fatty acids without the need of a dietary n-3 supply. Clinical arthritis score was significantly attenuated in fat-1 mice compared to wild type (WT) mice on day 7 (1.6±1.8, p = 0.012) and day 9 (1.5±1.6, p = 0.003). Ankle thickness also decreased significantly in fat-1 mice compared to WT mice (1.82±0.11, p = 0.008). The pathologic finding showed that inflammatory cell infiltration and bone destruction were reduced in fat-1 mice compared to WT. The expression levels of IL-17 and related cytokines including IL-6 and IL-23 decreased in the spleen and ankle joint tissue of fat-1 mice compared to WT mice. Furthermore, Treg cells were expanded in the spleen of fat-1 mice and Treg cell differentiation was significantly higher in fat-1 mice than in wild type (p = 0.038). These data suggest that n-3 PUFAs could attenuate arthritis through increasing the expression of FoxP3 and the differentiation of Treg, while reducing IL-17 production. Therefore, dietary supplementation of n-3 PUFAs could have a therapeutic potential for the treatment of RA.
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MESH Headings
- Animals
- Anti-Inflammatory Agents/metabolism
- Anti-Inflammatory Agents/therapeutic use
- Antibodies/immunology
- Arthritis, Experimental/drug therapy
- Arthritis, Experimental/immunology
- Arthritis, Experimental/metabolism
- Arthritis, Rheumatoid/drug therapy
- Arthritis, Rheumatoid/immunology
- Caenorhabditis elegans Proteins/genetics
- Caenorhabditis elegans Proteins/metabolism
- Cell Differentiation/drug effects
- Collagen/antagonists & inhibitors
- Collagen/immunology
- Cytokines/metabolism
- Dietary Supplements
- Fatty Acid Desaturases/genetics
- Fatty Acid Desaturases/metabolism
- Fatty Acids, Omega-3/metabolism
- Fatty Acids, Omega-3/therapeutic use
- Fatty Acids, Omega-6/metabolism
- Forkhead Transcription Factors/metabolism
- Humans
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Spleen/metabolism
- T-Lymphocytes, Regulatory/drug effects
- T-Lymphocytes, Regulatory/immunology
- Th17 Cells/drug effects
- Th17 Cells/immunology
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Affiliation(s)
- Ji Young Kim
- Division of Rheumatology, Daejeon Rheumatoid & Degenerative Arthritis Center, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Kyu Lim
- Department of Biochemistry and Cancer Research Institute, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Kyung Hee Kim
- Department of Pathology, Cancer Research Institute, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Jin Hyun Kim
- Division of Rheumatology, Daejeon Rheumatoid & Degenerative Arthritis Center, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Jin Sun Choi
- Division of Rheumatology, Daejeon Rheumatoid & Degenerative Arthritis Center, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Seung-Cheol Shim
- Division of Rheumatology, Daejeon Rheumatoid & Degenerative Arthritis Center, Chungnam National University Hospital, Daejeon, Republic of Korea
- * E-mail:
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15
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Witkowski M, Witkowski M, Gagliani N, Huber S. Recipe for IBD: can we use food to control inflammatory bowel disease? Semin Immunopathol 2017; 40:145-156. [PMID: 29124320 PMCID: PMC5809523 DOI: 10.1007/s00281-017-0658-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 10/18/2017] [Indexed: 02/07/2023]
Abstract
The mucosal immune system and the microbiota in the intestinal tract have recently been shown to play a key role in the pathogenesis of inflammatory bowel disease (IBD). Both of these can be influenced by food. Thus, we propose dietary intervention as a therapeutic option for IBD. In this review, we discuss the interaction of the intestinal mucosal immune system and the intestinal microbiota in the context of IBD. In addition, we discuss the impact of food components on immune responses in IBD. Finally, we address the current evidence of how this interaction (i.e., immune system-microbiota) can be modulated by food components, pre/probiotics, and fecal microbiota transplantation (FMT) and how these approaches can support intestinal homeostasis. By gathering the vast amount of literature available on the impact of food on IBD, we aim to distinguish between scientifically sound data and theories, which have not been included in this review.
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Affiliation(s)
- Mario Witkowski
- Institute of Medical Microbiology and Hygiene, University of Mainz Medical Centre, Mainz, Germany
| | - Marco Witkowski
- Department of Internal Medicine and Cardiology, Campus Benjamin Franklin, Charité - Universitätsmedizin, Berlin, Germany
| | - Nicola Gagliani
- Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Immunology and Allergy Unit, Department of Medicine, Solna, Karolinska Institute, 17176 , Stockholm, Sweden
| | - Samuel Huber
- Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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16
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Ungaro F, Rubbino F, Danese S, D'Alessio S. Actors and Factors in the Resolution of Intestinal Inflammation: Lipid Mediators As a New Approach to Therapy in Inflammatory Bowel Diseases. Front Immunol 2017; 8:1331. [PMID: 29109724 PMCID: PMC5660440 DOI: 10.3389/fimmu.2017.01331] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 09/29/2017] [Indexed: 12/15/2022] Open
Abstract
In the last few decades, the pathogenesis of inflammatory bowel disease (IBD) in genetically predisposed subjects susceptible to specific environmental factors has been attributed to disturbance of both the immune and non-immune system and/or to the imbalanced interactions with microbes. However, increasing evidences support the idea that defects in pro-resolving pathways might strongly contribute to IBD onset. The resolution of inflammation is now recognized as a dynamic event coordinated by specialized pro-resolving lipid mediators (LMs), which dampen inflammation-sustaining events, such as angiogenesis, release of pro-inflammatory cytokines, clearance of apoptotic cells, and microorganisms. Among these pro-resolving molecules, those derived from essential polyunsaturated fatty acids (PUFAs) have been shown to induce favorable effects on a plethora of human inflammatory disorders, including IBD. Here, we offer a summary of mechanisms involving both cellular and molecular components of the immune response and underlying the anti-inflammatory and pro-resolving properties of PUFAs and their derivatives in the gut, focusing on both ω-3 and ω-6 LMs. These fatty acids may influence IBD progression by: reducing neutrophil transmigration across the intestinal vasculature and the epithelium, preventing the release of pro-inflammatory cytokines and the up-regulation of adhesion molecules, and finally by promoting the production of other pro-resolving molecules. We also discuss the numerous attempts in using pro-resolving PUFAs to ameliorate intestinal inflammation, both in patients with IBD and mouse models. Although their effects in reducing inflammation is incontestable, results from previous works describing the effects of PUFA administration to prevent or treat IBD are controversial. Therefore, more efforts are needed not only to identify and explain the physiological functions of PUFAs in the gut, but also to unveil novel biosynthetic pathways of these pro-resolving LMs that may be dysregulated in these gut-related disorders. We suppose that either PUFAs or new medications specifically promoting resolution-regulating mediators and pathways will be much better tolerated by patients with IBD, with the advantage of avoiding immune suppression.
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Affiliation(s)
- Federica Ungaro
- Department of Biomedical Sciences, Humanitas University, Rozzano, Italy
| | - Federica Rubbino
- Department of Biomedical Sciences, Humanitas University, Rozzano, Italy
| | - Silvio Danese
- Department of Biomedical Sciences, Humanitas University, Rozzano, Italy.,Laboratory of Gastrointestinal Immunopathology, Humanitas Clinical and Research Center, IBD Center, Rozzano, Italy
| | - Silvia D'Alessio
- Department of Biomedical Sciences, Humanitas University, Rozzano, Italy
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17
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Navarini L, Afeltra A, Gallo Afflitto G, Margiotta DPE. Polyunsaturated fatty acids: any role in rheumatoid arthritis? Lipids Health Dis 2017; 16:197. [PMID: 29017507 PMCID: PMC5634864 DOI: 10.1186/s12944-017-0586-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 10/02/2017] [Indexed: 12/12/2022] Open
Abstract
Background Polyunsaturated fatty acids (PUFAs) are members of the family of fatty acids and are included in the diet. Particularly, western diet is usually low in n-3 PUFAs and high in n-6 PUFAs. PUFAs play a central role in the homeostasis of immune system: n-6 PUFAs have predominantly pro-inflammatory features, while n-3 PUFAs seem to exert anti-inflammatory and pro-resolving properties. Rheumatoid arthritis (RA) is a chronic inflammatory arthritis in which many inflammatory pathways contribute to joint and systemic inflammation, disease activity, and structural damage. Research on PUFAs could represent an important opportunity to better understand the pathogenesis and to improve the management of RA patients. Methods We searched PubMed, Embase, EBSCO-Medline, Cochrane Central Register of Controlled Trials (CENTRAL), CNKI and Wanfang to identify primary research reporting the role of n-3 PUFAs in rheumatoid arthritis both in humans and in animal models up to the end of March 2017. Results Data from animal models allows to hypothesize that n-3 PUFAs supplementation may represent an interesting perspective in future research as much in prevention as in treating RA. In humans, several case-control and prospective cohort studies suggest that a high content of n-3 PUFAs in the diet could have a protective role for incident RA in subjects at risk. Moreover, n-3 PUFAs supplementation has been assessed as a valuable therapeutic option also for patients with RA, particularly in order to improve the pain symptoms, the tender joint count, the duration of morning stiffness and the frequency of NSAIDs assumption. Conclusions n-3 PUFAs supplementation could represent a promising therapeutic option to better control many features of RA. The impact of n-3 PUFAs on radiographic progression and synovial histopathology has not been yet evaluated, as well as their role in early arthritis and the combination with biologics.
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Affiliation(s)
- Luca Navarini
- Unit of Allergology, Immunology, Rheumatology, Department of Medicine, Università Campus Bio-Medico di Roma, via Álvaro del Portillo 21, 00128, Rome, Italy.
| | - Antonella Afeltra
- Unit of Allergology, Immunology, Rheumatology, Department of Medicine, Università Campus Bio-Medico di Roma, via Álvaro del Portillo 21, 00128, Rome, Italy
| | - Gabriele Gallo Afflitto
- Unit of Allergology, Immunology, Rheumatology, Department of Medicine, Università Campus Bio-Medico di Roma, via Álvaro del Portillo 21, 00128, Rome, Italy
| | - Domenico Paolo Emanuele Margiotta
- Unit of Allergology, Immunology, Rheumatology, Department of Medicine, Università Campus Bio-Medico di Roma, via Álvaro del Portillo 21, 00128, Rome, Italy
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18
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Jeffery L, Fisk HL, Calder PC, Filer A, Raza K, Buckley CD, McInnes I, Taylor PC, Fisher BA. Plasma Levels of Eicosapentaenoic Acid Are Associated with Anti-TNF Responsiveness in Rheumatoid Arthritis and Inhibit the Etanercept-driven Rise in Th17 Cell Differentiation in Vitro. J Rheumatol 2017; 44:748-756. [PMID: 28202745 DOI: 10.3899/jrheum.161068] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/21/2016] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To determine whether levels of plasma n-3 polyunsaturated fatty acids are associated with response to antitumor necrosis factor (anti-TNF) agents in rheumatoid arthritis (RA), and whether this putative effect may have its basis in altering anti-TNF-driven Th17 cell differentiation. METHODS Plasma was collected at baseline and after 3 months of anti-TNF treatment in 22 patients with established RA, and fatty acid composition of the phosphatidylcholine (PC) component was measured. CD4+CD25- T cells and monocytes were purified from the blood of healthy donors and cocultured in the presence of anti-CD3, with or without etanercept (ETN), eicosapentaenoic acid (EPA), or the control fatty acid, linoleic acid (LA). Expression of interleukin 17 and interferon-γ was measured by intracellular staining and flow cytometry. RESULTS Plasma PC EPA levels and the EPA/arachidonic acid ratio correlated inversely with change in the Disease Activity Score at 28 joints (DAS28) at 3 months (-0.51, p = 0.007 and -0.48, p = 0.01, respectively), indicating that higher plasma EPA was associated with a greater reduction in DAS28. Plasma PC EPA was positively associated with European League Against Rheumatism response (p = 0.02). An increase in Th17 cells post-therapy has been associated with nonresponse to anti-TNF. ETN increased Th17 frequencies in vitro. Physiological concentrations of EPA, but not LA, prevented this. CONCLUSION EPA status was associated with clinical improvements to anti-TNF therapy in vivo and prevented the effect of ETN on Th17 cells in vitro. EPA supplementation might be a simple way to improve anti-TNF outcomes in patients with RA by suppressing Th17 frequencies.
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Affiliation(s)
- Louisa Jeffery
- From the Rheumatology Research Group and Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE), University of Birmingham, Birmingham; Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton; UK National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust; University of Southampton, Southampton; Glasgow Biomedical Research Centre, University of Glasgow, Glasgow; Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.,L. Jeffery, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; H.L. Fisk, BSc, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; P.C. Calder, PhD, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; A. Filer, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; K. Raza, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; C.D. Buckley, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; I. McInnes, PhD, Glasgow Biomedical Research Centre, University of Glasgow; P.C. Taylor, PhD, Kennedy Institute of Rheumatology, University of Oxford; B.A. Fisher, MD(Res), Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham
| | - Helena L Fisk
- From the Rheumatology Research Group and Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE), University of Birmingham, Birmingham; Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton; UK National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust; University of Southampton, Southampton; Glasgow Biomedical Research Centre, University of Glasgow, Glasgow; Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.,L. Jeffery, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; H.L. Fisk, BSc, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; P.C. Calder, PhD, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; A. Filer, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; K. Raza, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; C.D. Buckley, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; I. McInnes, PhD, Glasgow Biomedical Research Centre, University of Glasgow; P.C. Taylor, PhD, Kennedy Institute of Rheumatology, University of Oxford; B.A. Fisher, MD(Res), Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham
| | - Philip C Calder
- From the Rheumatology Research Group and Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE), University of Birmingham, Birmingham; Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton; UK National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust; University of Southampton, Southampton; Glasgow Biomedical Research Centre, University of Glasgow, Glasgow; Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.,L. Jeffery, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; H.L. Fisk, BSc, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; P.C. Calder, PhD, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; A. Filer, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; K. Raza, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; C.D. Buckley, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; I. McInnes, PhD, Glasgow Biomedical Research Centre, University of Glasgow; P.C. Taylor, PhD, Kennedy Institute of Rheumatology, University of Oxford; B.A. Fisher, MD(Res), Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham
| | - Andrew Filer
- From the Rheumatology Research Group and Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE), University of Birmingham, Birmingham; Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton; UK National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust; University of Southampton, Southampton; Glasgow Biomedical Research Centre, University of Glasgow, Glasgow; Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.,L. Jeffery, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; H.L. Fisk, BSc, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; P.C. Calder, PhD, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; A. Filer, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; K. Raza, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; C.D. Buckley, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; I. McInnes, PhD, Glasgow Biomedical Research Centre, University of Glasgow; P.C. Taylor, PhD, Kennedy Institute of Rheumatology, University of Oxford; B.A. Fisher, MD(Res), Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham
| | - Karim Raza
- From the Rheumatology Research Group and Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE), University of Birmingham, Birmingham; Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton; UK National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust; University of Southampton, Southampton; Glasgow Biomedical Research Centre, University of Glasgow, Glasgow; Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.,L. Jeffery, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; H.L. Fisk, BSc, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; P.C. Calder, PhD, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; A. Filer, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; K. Raza, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; C.D. Buckley, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; I. McInnes, PhD, Glasgow Biomedical Research Centre, University of Glasgow; P.C. Taylor, PhD, Kennedy Institute of Rheumatology, University of Oxford; B.A. Fisher, MD(Res), Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham
| | - Christopher D Buckley
- From the Rheumatology Research Group and Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE), University of Birmingham, Birmingham; Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton; UK National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust; University of Southampton, Southampton; Glasgow Biomedical Research Centre, University of Glasgow, Glasgow; Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.,L. Jeffery, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; H.L. Fisk, BSc, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; P.C. Calder, PhD, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; A. Filer, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; K. Raza, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; C.D. Buckley, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; I. McInnes, PhD, Glasgow Biomedical Research Centre, University of Glasgow; P.C. Taylor, PhD, Kennedy Institute of Rheumatology, University of Oxford; B.A. Fisher, MD(Res), Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham
| | - Iain McInnes
- From the Rheumatology Research Group and Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE), University of Birmingham, Birmingham; Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton; UK National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust; University of Southampton, Southampton; Glasgow Biomedical Research Centre, University of Glasgow, Glasgow; Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.,L. Jeffery, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; H.L. Fisk, BSc, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; P.C. Calder, PhD, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; A. Filer, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; K. Raza, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; C.D. Buckley, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; I. McInnes, PhD, Glasgow Biomedical Research Centre, University of Glasgow; P.C. Taylor, PhD, Kennedy Institute of Rheumatology, University of Oxford; B.A. Fisher, MD(Res), Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham
| | - Peter C Taylor
- From the Rheumatology Research Group and Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE), University of Birmingham, Birmingham; Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton; UK National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust; University of Southampton, Southampton; Glasgow Biomedical Research Centre, University of Glasgow, Glasgow; Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK.,L. Jeffery, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; H.L. Fisk, BSc, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; P.C. Calder, PhD, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; A. Filer, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; K. Raza, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; C.D. Buckley, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; I. McInnes, PhD, Glasgow Biomedical Research Centre, University of Glasgow; P.C. Taylor, PhD, Kennedy Institute of Rheumatology, University of Oxford; B.A. Fisher, MD(Res), Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham
| | - Benjamin A Fisher
- From the Rheumatology Research Group and Arthritis Research UK Rheumatoid Arthritis Pathogenesis Centre of Excellence (RACE), University of Birmingham, Birmingham; Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton; UK National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University Hospital Southampton National Health Service (NHS) Foundation Trust; University of Southampton, Southampton; Glasgow Biomedical Research Centre, University of Glasgow, Glasgow; Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK. .,L. Jeffery, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; H.L. Fisk, BSc, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; P.C. Calder, PhD, Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust, and University of Southampton; A. Filer, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; K. Raza, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; C.D. Buckley, PhD, Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham; I. McInnes, PhD, Glasgow Biomedical Research Centre, University of Glasgow; P.C. Taylor, PhD, Kennedy Institute of Rheumatology, University of Oxford; B.A. Fisher, MD(Res), Rheumatology Research Group and Arthritis Research UK RACE, University of Birmingham.
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Poland M, Ten Klooster JP, Wang Z, Pieters R, Boekschoten M, Witkamp R, Meijerink J. Docosahexaenoyl serotonin, an endogenously formed n-3 fatty acid-serotonin conjugate has anti-inflammatory properties by attenuating IL-23-IL-17 signaling in macrophages. BIOCHIMICA ET BIOPHYSICA ACTA 2016; 1861:2020-2028. [PMID: 27663185 DOI: 10.1016/j.bbalip.2016.09.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 08/24/2016] [Accepted: 09/16/2016] [Indexed: 01/01/2023]
Abstract
Conjugates of fatty acids and amines, including endocannabinoids, are known to play important roles as endogenous signaling molecules. Among these, the ethanolamine conjugate of the n-3 poly unsaturated long chain fatty acid (PUFA) docosahexaenoic acid (22:6n-3) (DHA) was shown to possess strong anti-inflammatory properties. Previously, we identified the serotonin conjugate of DHA, docosahexaenoyl serotonin (DHA-5-HT), in intestinal tissues and showed that its levels are markedly influenced by intake of n-3 PUFAs. However, its biological roles remain to be elucidated. Here, we show that DHA-5-HT possesses potent anti-inflammatory properties by attenuating the IL-23-IL-17 signaling cascade in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages. Transcriptome analysis revealed that DHA-5-HT down-regulates LPS-induced genes, particularly those involved in generating a CD4+ Th17 response. Hence, levels of PGE2, IL-6, IL-1β, and IL-23, all pivotal macrophage-produced mediators driving the activation of pathogenic Th17 cells in a concerted way, were found to be significantly suppressed by concentrations as low as 100-500nM DHA-5-HT. Furthermore, DHA-5-HT inhibited the ability of RAW264.7 cells to migrate and downregulated chemokines like MCP-1, CCL-20, and gene-expression of CCL-22 and of several metalloproteinases. Gene set enrichment analysis (GSEA) suggested negative overlap with gene sets linked to inflammatory bowel disease (IBD) and positive overlap with gene sets related to the Nrf2 pathway. The specific formation of DHA-5-HT in the gut, combined with increasing data underlining the importance of the IL-23-IL-17 signaling pathway in the etiology of many chronic inflammatory diseases merits further investigation into its potential as therapeutic compound in e.g. IBD or intestinal tumorigenesis.
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Affiliation(s)
- Mieke Poland
- Division of Human Nutrition, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands.
| | - Jean Paul Ten Klooster
- Institute for Life Sciences & Chemistry, Utrecht University of Applied Sciences, Utrecht, The Netherlands.
| | - Zheng Wang
- Division of Human Nutrition, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands.
| | - Raymond Pieters
- Institute for Life Sciences & Chemistry, Utrecht University of Applied Sciences, Utrecht, The Netherlands.
| | - Mark Boekschoten
- Division of Human Nutrition, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands.
| | - Renger Witkamp
- Division of Human Nutrition, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands.
| | - Jocelijn Meijerink
- Division of Human Nutrition, Wageningen University, PO Box 17, 6700 AA Wageningen, The Netherlands.
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21
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Abstract
Inflammatory bowel disease (IBD) is an inflammatory disorder of the intestine that affects an estimated 329 per 100,000 people in the United States and is increasing in incidence within a number of cultures worldwide. Likely due to its incompletely understood pathophysiology and etiology, the standard treatments for IBD are only efficacious in subsets of patients and often do not induce lasting remission. As a result, novel therapies are needed. The success of anti-tumor necrosis factor-α treatment in a subset of patients with IBD demonstrated that therapy targeting a single cytokine could be efficacious in IBD, and clinical trials investigating the blockade of a variety of cytokines have commenced. Interleukin (IL) 27 is a relatively recently discovered type I cytokine with established roles in infectious disease, autoimmunity, and cancer in a variety of organs. IL-27 was identified as a candidate gene for IBD, and a number of studies in mouse models of IBD have demonstrated that IL-27 therapy is protective. However, in contrast to these investigations, genetic deletion of the IL-27 receptor has been shown to be protective in some mouse models of IBD. The purpose of this review is to highlight the recent literature investigating the role of IL-27 in IBD and to discuss the possible explanations for the sometimes conflicting results of these studies. Evidence supporting IL-27 therapy as a treatment for IBD will also be discussed.
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22
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Basson A, Trotter A, Rodriguez-Palacios A, Cominelli F. Mucosal Interactions between Genetics, Diet, and Microbiome in Inflammatory Bowel Disease. Front Immunol 2016; 7:290. [PMID: 27531998 PMCID: PMC4970383 DOI: 10.3389/fimmu.2016.00290] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 07/19/2016] [Indexed: 12/12/2022] Open
Abstract
Numerous reviews have discussed gut microbiota composition changes during inflammatory bowel diseases (IBD), particularly Crohn’s disease (CD). However, most studies address the observed effects by focusing on studying the univariate connection between disease and dietary-induced alterations to gut microbiota composition. The possibility that these effects may reflect a number of other interconnected (i.e., pantropic) mechanisms, activated in parallel, particularly concerning various bacterial metabolites, is in the process of being elucidated. Progress seems, however, hampered by various difficult-to-study factors interacting at the mucosal level. Here, we highlight some of such factors that merit consideration, namely: (1) the contribution of host genetics and diet in altering gut microbiome, and in turn, the crosstalk among secondary metabolic pathways; (2) the interdependence between the amount of dietary fat, the fatty acid composition, the effects of timing and route of administration on gut microbiota community, and the impact of microbiota-derived fatty acids; (3) the effect of diet on bile acid composition, and the modulator role of bile acids on the gut microbiota; (4) the impact of endogenous and exogenous intestinal micronutrients and metabolites; and (5) the need to consider food associated toxins and chemicals, which can introduce confounding immune modulating elements (e.g., antioxidant and phytochemicals in oils and proteins). These concepts, which are not mutually exclusive, are herein illustrated paying special emphasis on physiologically inter-related processes.
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Affiliation(s)
- Abigail Basson
- Digestive Health Research Institute, Case Western Reserve University , Cleveland, OH , USA
| | - Ashley Trotter
- Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, USA; University Hospitals Case Medical Center, Cleveland, OH, USA
| | | | - Fabio Cominelli
- Digestive Health Research Institute, Case Western Reserve University, Cleveland, OH, USA; University Hospitals Case Medical Center, Cleveland, OH, USA
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23
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Huang CH, Hou YC, Pai MH, Yeh CL, Yeh SL. Dietary ω-6/ω-3 Polyunsaturated Fatty Acid Ratios Affect the Homeostasis of Th/Treg Cells in Mice With Dextran Sulfate Sodium-Induced Colitis. JPEN J Parenter Enteral Nutr 2016; 41:647-656. [PMID: 27006408 DOI: 10.1177/0148607116638493] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND This study evaluated the effect of different dietary ω-6/ω-3 polyunsaturated fatty acid (PUFA) ratios on modulating helper T (Th) and regulatory T (Treg) lymphocytes in mice with dextran sulfate sodium (DSS)-induced colitis. METHODS There were 3 control and 3 colitis groups. Mice were fed for 24 days with diets with soybean oil (S), a mixture of soybean oil and low fish oil content (LF), or high fish oil content (HF). The ratio of ω-6/ω-3 PUFA in the LF diet was 4:1, and that in the HF diet was 2:1. The control groups drank distilled water while colitis groups were provided 2% DSS in drinking water during days 15-19. All mice drank distilled water from days 20-24 for recovery and were sacrificed on day 25. RESULTS Colitis resulted in higher blood Th1, Th2, and Th17 and lower Treg percentages. Also, plasma haptoglobin and proinflammatory chemokines were elevated in colon lavage fluid. Colitic groups with fish oil had lower inflammatory mediators in the plasma and colon lavage fluid. Furthermore, the percentages of blood Th1, Th2, and Th17 cells were lower, whereas Treg cell percentages were higher than those in the soybean oil group. The colitis group with an ω-6/ω-3 PUFA ratio of 2:1 had more pronounced effects than the group with a ratio of 4:1. CONCLUSIONS Diets with an ω-6/ω-3 PUFA ratio of 2:1 or 4:1 regulate the Th/Treg balance and attenuate inflammatory mediator production in colitis. Compared with the ω-6/ω-3 PUFA ratio of 4:1, the ratio of 2:1 was more effective in reducing inflammatory reactions in DSS-induced colitis.
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Affiliation(s)
- Cyoung-Huei Huang
- 1 School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Yu-Chen Hou
- 2 Master Program in Food Safety, College of Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Man-Hui Pai
- 3 Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chiu-Li Yeh
- 4 Department of Nutrition and Health Science, Chinese Culture University, Taipei, Taiwan
| | - Sung-Ling Yeh
- 1 School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan.,2 Master Program in Food Safety, College of Nutrition, Taipei Medical University, Taipei, Taiwan
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24
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Wang C, Yosef N, Gaublomme J, Wu C, Lee Y, Clish CB, Kaminski J, Xiao S, Meyer Zu Horste G, Pawlak M, Kishi Y, Joller N, Karwacz K, Zhu C, Ordovas-Montanes M, Madi A, Wortman I, Miyazaki T, Sobel RA, Park H, Regev A, Kuchroo VK. CD5L/AIM Regulates Lipid Biosynthesis and Restrains Th17 Cell Pathogenicity. Cell 2015; 163:1413-27. [PMID: 26607793 DOI: 10.1016/j.cell.2015.10.068] [Citation(s) in RCA: 279] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 08/18/2015] [Accepted: 10/15/2015] [Indexed: 12/31/2022]
Abstract
Th17 cells play a critical role in host defense against extracellular pathogens and tissue homeostasis but can induce autoimmunity. The mechanisms implicated in balancing "pathogenic" and "non-pathogenic" Th17 cell states remain largely unknown. We used single-cell RNA-seq to identify CD5L/AIM as a regulator expressed in non-pathogenic, but not in pathogenic Th17 cells. Although CD5L does not affect Th17 differentiation, it is a functional switch that regulates the pathogenicity of Th17 cells. Loss of CD5L converts non-pathogenic Th17 cells into pathogenic cells that induce autoimmunity. CD5L mediates this effect by modulating the intracellular lipidome, altering fatty acid composition and restricting cholesterol biosynthesis and, thus, ligand availability for Rorγt, the master transcription factor of Th17 cells. Our study identifies CD5L as a critical regulator of the Th17 cell functional state and highlights the importance of lipid metabolism in balancing immune protection and disease induced by T cells.
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Affiliation(s)
- Chao Wang
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Nir Yosef
- Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA; Department of Electrical Engineering and Computer Science, University of California, Berkeley, Berkeley, CA 94720, USA; Center for Computational Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Jellert Gaublomme
- Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA; Department of Chemistry and Chemical Biology and Department of Physics, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA
| | - Chuan Wu
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Youjin Lee
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Clary B Clish
- Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA
| | - Jim Kaminski
- Center for Computational Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Sheng Xiao
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Gerd Meyer Zu Horste
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Mathias Pawlak
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Yasuhiro Kishi
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA; Mitsubishi Tanabe Pharma Corporation, Kamoshida-cho 1000, Yokohama, 225-0002, Japan
| | - Nicole Joller
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Katarzyna Karwacz
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Chen Zhu
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Maria Ordovas-Montanes
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Asaf Madi
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA; Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA
| | - Ivo Wortman
- Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA
| | - Toru Miyazaki
- Laboratory of Molecular Biomedicine for Pathogenesis, Center for Disease Biology and Integrative Medicine, Faculty of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
| | - Raymond A Sobel
- Palo Alto Veteran's Administration Health Care System and Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Hongkun Park
- Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA; Department of Chemistry and Chemical Biology and Department of Physics, Harvard University, 12 Oxford Street, Cambridge, MA 02138, USA
| | - Aviv Regev
- Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA; Howard Hughes Medical Institute and David H. Koch Institute for Integrative Cancer Research, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 20140, USA.
| | - Vijay K Kuchroo
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA; Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, MA 02142, USA.
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25
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Shoda H, Yanai R, Yoshimura T, Nagai T, Kimura K, Sobrin L, Connor KM, Sakoda Y, Tamada K, Ikeda T, Sonoda KH. Dietary Omega-3 Fatty Acids Suppress Experimental Autoimmune Uveitis in Association with Inhibition of Th1 and Th17 Cell Function. PLoS One 2015; 10:e0138241. [PMID: 26393358 PMCID: PMC4578775 DOI: 10.1371/journal.pone.0138241] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 08/27/2015] [Indexed: 12/21/2022] Open
Abstract
Omega (ω)–3 long-chain polyunsaturated fatty acids (LCPUFAs) inhibit the production of inflammatory mediators and thereby contribute to the regulation of inflammation. Experimental autoimmune uveitis (EAU) is a well-established animal model of autoimmune retinal inflammation. To investigate the potential effects of dietary intake of ω-3 LCPUFAs on uveitis, we examined the anti-inflammatory properties of these molecules in comparison with ω-6 LCPUFAs in a mouse EAU model. C57BL/6 mice were fed a diet containing ω-3 LCPUFAs or ω-6 LCPUFAs for 2 weeks before as well as after the induction of EAU by subcutaneous injection of a fragment of human interphotoreceptor retinoid-binding protein emulsified with complete Freund’s adjuvant. Both clinical and histological scores for uveitis were smaller for mice fed ω-3 LCPUFAs than for those fed ω-6 LCPUFAs. The concentrations of the T helper 1 (Th1) cytokine interferon-γ and the Th17 cytokine interleukin-17 in intraocular fluid as well as the production of these cytokines by lymph node cells were reduced for mice fed ω-3 LCPUFAs. Furthermore, the amounts of mRNAs for the Th1- and Th17-related transcription factors T-bet and RORγt, respectively, were reduced both in the retina and in lymph node cells of mice fed ω-3 LCPUFAs. Our results thus show that a diet enriched in ω-3 LCPUFAs suppressed uveitis in mice in association with inhibition of Th1 and Th17 cell function.
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Affiliation(s)
- Hiromi Shoda
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
- Department of Ophthalmology, Osaka Medical Collage, Osaka, Japan
| | - Ryoji Yanai
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
- * E-mail:
| | - Takeru Yoshimura
- Angiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Cambridge, Massachusetts, United States of America
| | - Tomohiko Nagai
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Kazuhiro Kimura
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Lucia Sobrin
- Angiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Cambridge, Massachusetts, United States of America
| | - Kip M. Connor
- Angiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Cambridge, Massachusetts, United States of America
| | - Yukimi Sakoda
- Department of Immunology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Koji Tamada
- Department of Immunology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Tsunehiko Ikeda
- Department of Ophthalmology, Osaka Medical Collage, Osaka, Japan
| | - Koh-Hei Sonoda
- Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
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Omega-3 Polyunsaturated Fatty Acids: The Way Forward in Times of Mixed Evidence. BIOMED RESEARCH INTERNATIONAL 2015; 2015:143109. [PMID: 26301240 PMCID: PMC4537707 DOI: 10.1155/2015/143109] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 05/18/2015] [Accepted: 05/28/2015] [Indexed: 12/18/2022]
Abstract
Almost forty years ago, it was first hypothesized that an increased dietary intake of omega-3 polyunsaturated fatty acids (PUFA) from fish fat could exert protective effects against several pathologies. Decades of intense preclinical investigation have supported this hypothesis in a variety of model systems. Several clinical cardiovascular studies demonstrated the beneficial health effects of omega-3 PUFA, leading medical institutions worldwide to publish recommendations for their increased intake. However, particularly in recent years, contradictory results have been obtained in human studies focusing on cardiovascular disease and the clinical evidence in other diseases, particularly chronic inflammatory and neoplastic diseases, was never established to a degree that led to clear approval of treatment with omega-3 PUFA. Recent data not in line with the previous findings have sparked a debate on the health efficacy of omega-3 PUFA and the usefulness of increasing their intake for the prevention of a number of pathologies. In this review, we aim to examine the controversies on the possible use of these fatty acids as preventive/curative tools against the development of cardiovascular, metabolic, and inflammatory diseases, as well as several kinds of cancer.
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Yuan S, Chen QP. Th17 cells and intestinal mucosal immunity. Shijie Huaren Xiaohua Zazhi 2015; 23:3094-3100. [DOI: 10.11569/wcjd.v23.i19.3094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
T helper cell 17 (Th17) cells are identified as a new subset of T helper cells. Their differentiation is associated with a variety of cytokines and transcription factors, and they can secrete a variety of cytokines, such as interleukin (IL)-17 and IL-22, both of which can promote inflammation in the intestinal mucosa barrier and have a protective effect on organs. Probiotics
have been confirmed to have anti-inflammatory effects in the intestinal tract, the role of which may be associated with inhibiting Th17 cell activity. However, the stable number of Th17 cells requires the presence of intestinal symbiotic microbita. This paper will review the differentiation of Th17 cells and their role in intestinal mucosal immunity.
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Whelan J, Gowdy KM, Shaikh SR. N-3 polyunsaturated fatty acids modulate B cell activity in pre-clinical models: Implications for the immune response to infections. Eur J Pharmacol 2015; 785:10-17. [PMID: 26022530 DOI: 10.1016/j.ejphar.2015.03.100] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 01/15/2015] [Accepted: 03/05/2015] [Indexed: 12/12/2022]
Abstract
B cell antigen presentation, cytokine production, and antibody production are targets of pharmacological intervention in inflammatory and infectious diseases. Here we review recent pre-clinical evidence demonstrating that pharmacologically relevant levels of n-3 polyunsaturated fatty acids (PUFA) derived from marine fish oils influence key aspects of B cell function through multiple mechanisms. N-3 PUFAs modestly diminish B cell mediated stimulation of classically defined naïve CD4(+) Th1 cells through the major histocompatibility complex (MHC) class II pathway. This is consistent with existing data showing that n-3 PUFAs suppress the activation of Th1/Th17 cells through direct effects on helper T cells and indirect effects on antigen presenting cells. Mechanistically, n-3 PUFAs lower antigen presentation and T cell signaling by disrupting the formation of lipid microdomains within the immunological synapse. We then review data to show that n-3 PUFAs boost B cell activation and antibody production in the absence and presence of antigen stimulation. This has potential benefits for several clinical populations such as the aged and obese that have poor humoral immunity. The mode of action by which n-3 PUFA boost B cell activation and antibody production remains unclear, but may involve Th2 cytokines, enhanced production of specialized proresolving lipid mediators, and targeting of protein lateral organization in lipid microdomains. Finally, we highlight evidence to show that different n-3 PUFAs are not biologically equivalent, which has implications for the development of future interventions to target B cell activity.
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Affiliation(s)
- Jarrett Whelan
- Department of Biochemistry & Molecular Biology, East Carolina Diabetes & Obesity Institute, East Carolina Heart Institute, Brody School of Medicine, East Carolina University, Greenville, NC 27834, United States
| | - Kymberly M Gowdy
- Department of Pharmacology & Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC 27834, United States
| | - Saame Raza Shaikh
- Department of Biochemistry & Molecular Biology, East Carolina Diabetes & Obesity Institute, East Carolina Heart Institute, Brody School of Medicine, East Carolina University, Greenville, NC 27834, United States; Department of Microbiology & Immunology, East Carolina Diabetes & Obesity Institute, East Carolina Heart Institute, Brody School of Medicine, East Carolina University, Greenville, NC 27834, United States
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29
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Hou TY, McMurray DN, Chapkin RS. Omega-3 fatty acids, lipid rafts, and T cell signaling. Eur J Pharmacol 2015; 785:2-9. [PMID: 26001374 DOI: 10.1016/j.ejphar.2015.03.091] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 02/16/2015] [Accepted: 03/16/2015] [Indexed: 12/24/2022]
Abstract
n-3 polyunsaturated fatty acids (PUFA) have been shown in many clinical studies to attenuate inflammatory responses. Although inflammatory responses are orchestrated by a wide spectrum of cells, CD4(+) T cells play an important role in the etiology of many chronic inflammatory diseases such as inflammatory bowel disease and obesity. In light of recent concerns over the safety profiles of non-steroidal anti-inflammatory drugs (NSAIDs), alternatives such as bioactive nutraceuticals are becoming more attractive. In order for these agents to be accepted into mainstream medicine, however, the mechanisms by which nutraceuticals such as n-3 PUFA exert their anti-inflammatory effects must be fully elucidated. Lipid rafts are nanoscale, dynamic domains in the plasma membrane that are formed through favorable lipid-lipid (cholesterol, sphingolipids, and saturated fatty acids) and lipid-protein (membrane-actin cytoskeleton) interactions. These domains optimize the clustering of signaling proteins at the membrane to facilitate efficient cell signaling which is required for CD4(+) T cell activation and differentiation. This review summarizes novel emerging data documenting the ability of n-3 PUFA to perturb membrane-cytoskeletal structure and function in CD4(+) T cells. An understanding of these underlying mechanisms will provide a rationale for the use of n-3 PUFA in the treatment of chronic inflammation.
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Affiliation(s)
- Tim Y Hou
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA; Department of Nutrition and Food Science, Texas A&M University, College Station, TX, USA; Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA
| | - David N McMurray
- Department of Nutrition and Food Science, Texas A&M University, College Station, TX, USA; Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA; Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA; Department of Microbial Pathogenesis and Immunology, Texas A&M University System Health Science Center, College Station, TX, USA
| | - Robert S Chapkin
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA; Department of Nutrition and Food Science, Texas A&M University, College Station, TX, USA; Program in Integrative Nutrition and Complex Diseases, Texas A&M University, College Station, TX, USA; Center for Translational Environmental Health Research, Texas A&M University, College Station, TX, USA; Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA; Department of Microbial Pathogenesis and Immunology, Texas A&M University System Health Science Center, College Station, TX, USA.
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30
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Burkett PR, Meyer zu Horste G, Kuchroo VK. Pouring fuel on the fire: Th17 cells, the environment, and autoimmunity. J Clin Invest 2015; 125:2211-9. [PMID: 25961452 DOI: 10.1172/jci78085] [Citation(s) in RCA: 176] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Cytokines play a critical role in controlling the differentiation of CD4 Th cells into distinct subsets, including IL-17-producing Th17 cells. Unfortunately, the incidence of a number of autoimmune diseases, particularly those in which the IL-23/IL-17 axis has been implicated, has risen in the last several decades, suggesting that environmental factors can promote autoimmunity. Here we review the role of cytokines in Th17 differentiation, particularly the role of IL-23 in promoting the differentiation of a pathogenic subset of Th17 cells that potently induce autoimmune tissue inflammation. Moreover, we highlight emerging data that indicate that environmental factors, including the intestinal microbiota and changes in diet, can alter normal cytokine regulation with potent effects on Th17 differentiation and thus promote autoimmunity, which has strong implications for human disease.
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31
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Kim YS, Sayers TJ, Colburn NH, Milner JA, Young HA. Impact of dietary components on NK and Treg cell function for cancer prevention. Mol Carcinog 2015; 54:669-78. [PMID: 25845339 DOI: 10.1002/mc.22301] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 12/09/2014] [Accepted: 01/21/2015] [Indexed: 01/11/2023]
Abstract
An important characteristic of cancer is that the disease can overcome the surveillance of the immune system. A possible explanation for this resistance arises from the ability of tumor cells to block the tumoricidal activity of host immune cells such as natural killer (NK) cells by inducing the localized accumulation of regulatory T (Treg) cells. Evidence exists that components in commonly consumed foods including vitamins A, D, and E, water-soluble constituents of mushrooms, polyphenolics in fruits and vegetables, and n-3 fatty acids in fish oil can modulate NK cell activities, Treg cell properties, and the interactions between those two cell types. Thus, it is extremely important for cancer prevention to understand the involvement of dietary components with the early stage dynamics of interactions among these immune cells. This review addresses the potential significance of diet in supporting the function of NK cells, Treg cells, and the balance between those two cell types, which ultimately results in decreased cancer risk.
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Affiliation(s)
- Young S Kim
- Nutritional Science Research Group, Division of Cancer Prevention, National Cancer Institute, Rockville, Maryland
| | - Thomas J Sayers
- Frederick National Laboratory, Center for Cancer Research, NCI, Frederick, Maryland
| | - Nancy H Colburn
- Frederick National Laboratory, Center for Cancer Research, NCI, Frederick, Maryland
| | - John A Milner
- Human Nutrition Research Center, USDA/ARS, Beltsville, Maryland
| | - Howard A Young
- Frederick National Laboratory, Center for Cancer Research, NCI, Frederick, Maryland
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32
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Tyagi A, Kumar U, Santosh VS, Reddy S, Mohammed SB, Ibrahim A. Partial replacement of dietary linoleic acid with long chain n-3 polyunsaturated fatty acids protects against dextran sulfate sodium-induced colitis in rats. Prostaglandins Leukot Essent Fatty Acids 2014; 91:289-97. [PMID: 25451558 DOI: 10.1016/j.plefa.2014.09.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 09/05/2014] [Accepted: 09/16/2014] [Indexed: 01/08/2023]
Abstract
Imbalances in the dietary n-6 and n-3 polyunsaturated fatty acids have been implicated in the increased prevalence of inflammatory bowel disease. This study investigated the effects of substitution of linoleic acid with long chain n-3 polyunsaturated fatty acids and hence decreasing n-6:n-3 fatty acid ratio on inflammatory response in dextran sulfate sodium induced colitis. Male weanling Sprague Dawley rats were fed diets with n-6:n-3 fatty acid in the ratios of 215,50,10 or 5 for 3 months and colitis was induced by administration of dextran sulfate sodium in drinking water during last 11 days. Decreasing the dietary n-6:n-3 fatty acid ratio to 10 and 5 significantly attenuated the severity of colitis as evidenced by improvements in clinical symptoms, reversal of shortening of colon length, reduced severity of anemia, preservation of colonic architecture as well as reduced colonic mucosal myeloperoxidase activity. This protection was associated with suppression of colonic mucosal proinflammatory mediators such as TNFα, IL-1β and nitric oxide. These findings suggest that long chain n-3 polyunsaturated fatty acids at a level of 3.0 g/kg diet (n-6:n-3 ratio of 10) prevents dextran sulfate sodium induced colitis by suppressing the proinflammatory mediators.
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Affiliation(s)
- Anupama Tyagi
- Department of Lipid Chemistry, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, India
| | - Uday Kumar
- Department of Pathology, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, India
| | - Vadakattu Sai Santosh
- Department of Lipid Chemistry, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, India
| | - Suryam Reddy
- Department of Lipid Chemistry, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, India
| | - Saazida Bhanu Mohammed
- Department of Lipid Chemistry, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, India
| | - Ahamed Ibrahim
- Department of Lipid Chemistry, National Institute of Nutrition, Indian Council of Medical Research, Hyderabad, India.
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33
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Pai MH, Liu JJ, Hou YC, Yeh CL. Soybean and Fish Oil Mixture With Different ω-6/ω-3 Polyunsaturated Fatty Acid Ratios Modulates Dextran Sulfate Sodium–Induced Changes in Small Intestinal Intraepithelial γδT-Lymphocyte Expression in Mice. JPEN J Parenter Enteral Nutr 2014; 40:383-91. [DOI: 10.1177/0148607114559429] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 10/15/2014] [Indexed: 01/28/2023]
Affiliation(s)
- Man-Hui Pai
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Jun-Jen Liu
- School of Medical Laboratory Science and Biotechnology, Taipei Medical University, Taipei, Taiwan
| | - Yu-Chen Hou
- Department of Surgery, National Taiwan University Hospital, Taipei, Taiwan
| | - Chiu-Li Yeh
- Department of Nutrition and Health Sciences, Chinese Culture University, Taipei, Taiwan
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34
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Calder PC. Marine omega-3 fatty acids and inflammatory processes: Effects, mechanisms and clinical relevance. Biochim Biophys Acta Mol Cell Biol Lipids 2014; 1851:469-84. [PMID: 25149823 DOI: 10.1016/j.bbalip.2014.08.010] [Citation(s) in RCA: 924] [Impact Index Per Article: 92.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 08/12/2014] [Accepted: 08/13/2014] [Indexed: 12/15/2022]
Abstract
Inflammation is a condition which contributes to a range of human diseases. It involves a multitude of cell types, chemical mediators, and interactions. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are omega-3 (n-3) fatty acids found in oily fish and fish oil supplements. These fatty acids are able to partly inhibit a number of aspects of inflammation including leukocyte chemotaxis, adhesion molecule expression and leukocyte-endothelial adhesive interactions, production of eicosanoids like prostaglandins and leukotrienes from the n-6 fatty acid arachidonic acid, production of inflammatory cytokines, and T-helper 1 lymphocyte reactivity. In addition, EPA gives rise to eicosanoids that often have lower biological potency than those produced from arachidonic acid and EPA and DHA give rise to anti-inflammatory and inflammation resolving mediators called resolvins, protectins and maresins. Mechanisms underlying the anti-inflammatory actions of marine n-3 fatty acids include altered cell membrane phospholipid fatty acid composition, disruption of lipid rafts, inhibition of activation of the pro-inflammatory transcription factor nuclear factor kappa B so reducing expression of inflammatory genes, activation of the anti-inflammatory transcription factor peroxisome proliferator activated receptor γ and binding to the G protein coupled receptor GPR120. These mechanisms are interlinked, although the full extent of this is not yet elucidated. Animal experiments demonstrate benefit from marine n-3 fatty acids in models of rheumatoid arthritis (RA), inflammatory bowel disease (IBD) and asthma. Clinical trials of fish oil in RA demonstrate benefit, but clinical trials of fish oil in IBD and asthma are inconsistent with no overall clear evidence of efficacy. This article is part of a Special Issue entitled "Oxygenated metabolism of PUFA: analysis and biological relevance".
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Affiliation(s)
- Philip C Calder
- Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK; NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust and University of Southampton, Southampton, UK; Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
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35
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Allen MJ, Fan YY, Monk JM, Hou TY, Barhoumi R, McMurray DN, Chapkin RS. n-3 PUFAs reduce T-helper 17 cell differentiation by decreasing responsiveness to interleukin-6 in isolated mouse splenic CD4⁺ T cells. J Nutr 2014; 144:1306-13. [PMID: 24944284 PMCID: PMC4093987 DOI: 10.3945/jn.114.194407] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cluster of differentiation 4(+) (CD4(+)) effector T-cell subsets [e.g., T-helper (Th) 1 and Th17] are implicated in autoimmune and inflammatory disorders such as multiple sclerosis, psoriasis, and rheumatoid arthritis. Interleukin (IL)-6 is a pleiotropic cytokine that induces Th17 polarization via signaling through the membrane-bound transducer glycoprotein 130 (GP130). Previously, we demonstrated that n-3 (ω-3) polyunsaturated fatty acids (PUFAs) reduce CD4(+) T-cell activation and differentiation into pathogenic Th17 cells by 25-30%. Here we report that n-3 PUFAs alter the response of CD4(+) T cells to IL-6 in a lipid raft membrane-dependent manner. Naive splenic CD4(+) T cells from fat-1 transgenic mice exhibited 30% lower surface expression of the IL-6 receptor. This membrane-bound receptor is known to be shed during cellular activation, but the release of soluble IL-6 receptor after treatment with anti-CD3 and anti-CD28 was not changed in the CD4(+) T cells from fat-1 mice, suggesting that the decrease in surface expression was not due to ectodomain release. We observed a significant 20% decrease in the association of GP130 with lipid rafts in activated fat-1 CD4(+) T cells and a 35% reduction in GP130 homodimerization, an obligate requirement for downstream signaling. The phosphorylation of signal transducer and activator of transcription 3 (STAT3), a downstream target of IL-6-dependent signaling, was also decreased by 30% in response to exogenous IL-6 in fat-1 CD4(+) T cells. Our results suggest that n-3 PUFAs suppress Th17 cell differentiation in part by reducing membrane raft-dependent responsiveness to IL-6, an essential polarizing cytokine.
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Affiliation(s)
- M. Jeannie Allen
- Program in Integrative Nutrition and Complex Diseases,,Nutrition and Food Science
| | - Yang-Yi Fan
- Program in Integrative Nutrition and Complex Diseases,,Nutrition and Food Science
| | - Jennifer M. Monk
- Program in Integrative Nutrition and Complex Diseases,,Nutrition and Food Science
| | - Tim Y. Hou
- Program in Integrative Nutrition and Complex Diseases,,Biochemistry and Biophysics
| | - Rola Barhoumi
- College of Veterinary Medicine and Biomedical Sciences Image Analysis Laboratory, and
| | - David N. McMurray
- Program in Integrative Nutrition and Complex Diseases,,Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, College Station, TX
| | - Robert S. Chapkin
- Program in Integrative Nutrition and Complex Diseases,,Nutrition and Food Science,,Center for Translational Environmental Health Research, Texas A&M University, College Station, TX; and,Microbial Pathogenesis and Immunology, School of Medicine, Texas A&M University Health Science Center, College Station, TX,To whom correspondence should be addressed. E-mail:
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36
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Antagonizing arachidonic acid-derived eicosanoids reduces inflammatory Th17 and Th1 cell-mediated inflammation and colitis severity. Mediators Inflamm 2014; 2014:917149. [PMID: 25136149 PMCID: PMC4127240 DOI: 10.1155/2014/917149] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 06/26/2014] [Indexed: 01/07/2023] Open
Abstract
During colitis, activation of two inflammatory T cell subsets, Th17 and Th1 cells, promotes ongoing intestinal inflammatory responses. n-6 polyunsaturated fatty acid- (PUFA-) derived eicosanoids, such as prostaglandin E2 (PGE2), promote Th17 cell-mediated inflammation, while n-3 PUFA antagonize both Th17 and Th1 cells and suppress PGE2 levels. We utilized two genetic mouse models, which differentially antagonize PGE2 levels, to examine the effect on Th17 cells and disease outcomes in trinitrobenzene sulfonic acid- (TNBS-) induced colitis. Fat-1 mice contain the ω3 desaturase gene from C. elegans and synthesize n-3 PUFA de novo, thereby reducing the biosynthesis of n-6 PUFA-derived eicosanoids. In contrast, Fads1 Null mice contain a disrupted Δ5 desaturase gene and produce lower levels of n-6 PUFA-derived eicosanoids. Compared to Wt littermates, Fat-1 and Fads1 Null mice exhibited a similar colitic phenotype characterized by reduced colonic mucosal inflammatory eicosanoid levels and mRNA expression of Th17 cell markers (IL-17A, RORγτ, and IL-23), decreased percentages of Th17 cells and, improved colon injury scores (P ≤ 0.05). Thus, during colitis, similar outcomes were obtained in two genetically distinct models, both of which antagonize PGE2 levels via different mechanisms. Our data highlight the critical impact of n-6 PUFA-derived eicosanoids in the promotion of Th17 cell-mediated colonic inflammation.
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37
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Ziai S, Coriati A, Gauthier MS, Rabasa-Lhoret R, Richter MV. Could T cells be involved in lung deterioration and hyperglycemia in cystic fibrosis? Diabetes Res Clin Pract 2014; 105:22-9. [PMID: 24731255 DOI: 10.1016/j.diabres.2014.03.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 01/20/2014] [Accepted: 03/03/2014] [Indexed: 12/17/2022]
Abstract
Cystic fibrosis-related diabetes (CFRD) is the most frequent complication of cystic fibrosis (CF) and associated with increased mortality. Why patients have an accelerated loss of lung function before the diagnosis of CFRD remains poorly understood. We reported that patients with or without CFRD had increased glucose excursions when compared to healthy peers. Studies have demonstrated that patients with CF have increased glucose fluctuations and hyperglycemia and that this may affect the clinical course of CF and lead to lymphocyte dysfunction. T-helper 17 (Th17) lymphocytes produce and secrete the pro-inflammatory cytokine IL-17. The Th17 pathway is involved in CF lung inflammation, β-cell destruction in type 1 diabetes (T1D) and Th17 cells of patients with type 2 diabetes have increased production of IL-17 when compared to healthy peers. Also, regulatory T-cells (Tregs) have been shown to be dysfunctional and produce IL-17 in T1D. Furthermore, vitamin D can affect inflammation in CF, diabetes and the differentiation of lymphocytes. In this review, we discuss the potential roles of hyperglycemia on Th17 cells, Tregs and IL-17 as a potential cause for accelerated lung function decline before CFRD and how this could be modulated by vitamin D or by directly intervening in the IL-17A pathway.
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Affiliation(s)
- S Ziai
- Nutrition Department, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada; Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada
| | - A Coriati
- Nutrition Department, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada; Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada
| | - M-S Gauthier
- Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada
| | - R Rabasa-Lhoret
- Nutrition Department, Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada; Institut de Recherches Cliniques de Montréal (IRCM), Montréal, Québec, Canada; Montreal Diabetes Research Centre (MDRC), Montréal, Québec, Canada; Cystic Fibrosis Clinic, Centre Hospitalier de l'Université de Montréal (CHUM) & CHUM Research Center (CR-CHUM), Montréal, Québec, Canada
| | - M V Richter
- Department of Medicine, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Québec, Canada.
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38
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Teague H, Harris M, Fenton J, Lallemand P, Shewchuk BM, Shaikh SR. Eicosapentaenoic and docosahexaenoic acid ethyl esters differentially enhance B-cell activity in murine obesity. J Lipid Res 2014; 55:1420-33. [PMID: 24837990 DOI: 10.1194/jlr.m049809] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Indexed: 01/06/2023] Open
Abstract
EPA and DHA are not biologically equivalent; however, their individual activity on B cells is unknown. We previously reported fish oil enhanced murine B-cell activity in obesity. To distinguish between the effects of EPA and DHA, we studied the ethyl esters of EPA and DHA on murine B-cell function as a function of time. We first demonstrate that EPA and DHA maintained the obese phenotype, with no improvements in fat mass, adipose inflammatory cytokines, fasting insulin, or glucose clearance. We then tested the hypothesis that EPA and DHA would increase the frequency of splenic B cells. EPA and DHA differentially enhanced the frequency and/or percentage of select B-cell subsets, correlating with increased natural serum IgM and cecal IgA. We next determined the activities of EPA and DHA on ex vivo production of cytokines upon lipopolysaccharide stimulation of B cells. EPA and DHA, in a time-dependent manner, enhanced B-cell cytokines with DHA notably increasing IL-10. At the molecular level, EPA and DHA differentially enhanced the formation of ordered microdomains but had no effect on Toll-like receptor 4 mobility. Overall, the results establish differential effects of EPA and DHA in a time-dependent manner on B-cell activity in obesity, which has implications for future clinical studies.
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Affiliation(s)
- Heather Teague
- Department of Biochemistry and Molecular Biology, Brody School of Medicine, East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC
| | - Mitchel Harris
- Department of Biochemistry and Molecular Biology, Brody School of Medicine, East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC
| | - Jenifer Fenton
- Department of Food Science and Nutrition, Michigan State University, East Lansing, MI
| | - Perrine Lallemand
- Department of Biochemistry and Molecular Biology, Brody School of Medicine, East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC
| | - Brian M Shewchuk
- Department of Biochemistry and Molecular Biology, Brody School of Medicine, East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC
| | - Saame Raza Shaikh
- Department of Biochemistry and Molecular Biology, Brody School of Medicine, East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC
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39
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Goldsmith JR, Sartor B. The role of diet on intestinal microbiota metabolism: downstream impacts on host immune function and health, and therapeutic implications. J Gastroenterol 2014; 49:785-98. [PMID: 24652102 PMCID: PMC4035358 DOI: 10.1007/s00535-014-0953-z] [Citation(s) in RCA: 147] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Accepted: 03/10/2014] [Indexed: 02/07/2023]
Abstract
Dietary impacts on health may be one of the oldest concepts in medicine; however, only in recent years have technical advances in mass spectroscopy, gnotobiology, and bacterial sequencing enabled our understanding of human physiology to progress to the point where we can begin to understand how individual dietary components can affect specific illnesses. This review explores the current understanding of the complex interplay between dietary factors and the host microbiome, concentrating on the downstream implications on host immune function and the pathogenesis of disease. We discuss the influence of the gut microbiome on body habitus and explore the primary and secondary effects of diet on enteric microbial community structure. We address the impact of consumption of non-digestible polysaccharides (prebiotics and fiber), choline, carnitine, iron, and fats on host health as mediated by the enteric microbiome. Disease processes emphasized include non-alcoholic fatty liver disease/non-alcoholic steatohepatitis, IBD, and cardiovascular disease/atherosclerosis. The concepts presented in this review have important clinical implications, although more work needs to be done to develop fully and validate potential therapeutic approaches. Specific dietary interventions offer exciting potential for nontoxic, physiologic ways to alter enteric microbial structure and metabolism to benefit the natural history of many intestinal and systemic disorders.
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Affiliation(s)
| | - Balfour Sartor
- Departments of Medicine, Microbiology and Immunology University of North Carolina at Chapel Hill
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40
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Qin S, Wen J, Bai XC, Chen TY, Zheng RC, Zhou GB, Ma J, Feng JY, Zhong BL, Li YM. Endogenous n-3 polyunsaturated fatty acids protect against imiquimod-induced psoriasis-like inflammation via the IL-17/IL-23 axis. Mol Med Rep 2014; 9:2097-104. [PMID: 24718773 PMCID: PMC4055457 DOI: 10.3892/mmr.2014.2136] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Accepted: 03/11/2014] [Indexed: 12/22/2022] Open
Abstract
The beneficial effects of n-3 polyunsaturated fatty acids (PUFAs) on psoriasis have been reported in rats, mice and humans, but the specific mechanisms involved have not been well defined. The present study utilized the fat-1 mouse, a transgenic model that can endogenously convert n-6 FAs into n-3 PUFAs, to directly determine if the outcomes of psoriasis were correlated with n-3 PUFAs. Wild-type (WT) and fat-1 mice, which were treated daily with imiquimod (IMQ) cream or control cream on the shaved right ear and dorsal skin, were fed the same diet. The severity of inflammation of the ear and dorsal skin was scored according to the clinical Psoriasis Area and Severity Index (PASI) and epidermal hyperplasia was measured by H&E staining. The expression of inflammatory factors in the epidermis was analyzed by immunohistochemical analysis. Flow cytometry and an enzyme-linked immunosorbent assay were used to measure the differences in the content of inflammatory factors in the blood serum and to determine which of CD4+ T cells were present in the spleen between IMQ-induced fat-1 mice and WT mice. Fat-1 IMQ-induced mice exhibited significantly lower levels of inflammatory cell-like T helper 17 cells (Th17 cells) and higher levels of regulatory T cells (Treg cells) in the spleen as compared with the WT IMQ-induced mice. n-3 fatty acids stimulated Th17 cells to produce lower levels of inflammatory factors, including interleukin (IL)-17, IL-22, IL-23 and stimulated Treg cells to produce higher anti-inflammatory factors, such as Foxp3. In conclusion, the present study provides further insight into the mechanisms involved in preventing inflammation in psoriasis-like mice by n-3 PUFAs using a fat-1 transgenic mouse model.
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Affiliation(s)
- Si Qin
- Department of Dermatology, Southern Medical University Affiliated Guangdong Provincial No. 2 People's Hospital, Guangzhou, Guangdong, P.R. China
| | - Ju Wen
- Department of Dermatology, Southern Medical University Affiliated Guangdong Provincial No. 2 People's Hospital, Guangzhou, Guangdong, P.R. China
| | - Xiao-Chun Bai
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Tian-Yu Chen
- Department of Orthopaedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong, P.R. China
| | - Rong-Chang Zheng
- Department of Dermatology, Southern Medical University Affiliated Guangdong Provincial No. 2 People's Hospital, Guangzhou, Guangdong, P.R. China
| | - Gui-Bin Zhou
- Department of Dermatology, Southern Medical University Affiliated Guangdong Provincial No. 2 People's Hospital, Guangzhou, Guangdong, P.R. China
| | - Jing Ma
- Department of Dermatology, Southern Medical University Affiliated Guangdong Provincial No. 2 People's Hospital, Guangzhou, Guangdong, P.R. China
| | - Jie-Ying Feng
- Department of Dermatology, Southern Medical University Affiliated Guangdong Provincial No. 2 People's Hospital, Guangzhou, Guangdong, P.R. China
| | - Bi-Ling Zhong
- Department of Pathology, Guangdong Provincial No. 2 People's Hospital, Guangzhou, Guangdong, P.R. China
| | - Yi-Ming Li
- Department of Pathology, Guangdong Provincial No. 2 People's Hospital, Guangzhou, Guangdong, P.R. China
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41
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Xia S, Li X, Cheng L, Han M, Zhang M, Liu X, Xu H, Zhang M, Shao Q, Qi L. Chronic intake of high fish oil diet induces myeloid-derived suppressor cells to promote tumor growth. Cancer Immunol Immunother 2014; 63:663-73. [PMID: 24691944 DOI: 10.1007/s00262-014-1546-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 03/21/2014] [Indexed: 01/11/2023]
Abstract
Omega-3 polyunsaturated fatty acids enriched fish oil exerts beneficial anti-inflammatory effects in animal models with acute and chronic inflammatory diseases. Myeloid-derived suppressor cells (MDSCs), comprised of myeloid progenitors and precursors of myeloid cells, play vital roles in cancer. How fish oil affects the generation of MDSCs and the tumor development remains largely unexplored. Here, we show that dietary intake of high fish oil diet suppresses CD8(+) T cells activation and proliferation in vivo via elevated levels of MDSCs. Mechanistically, high fish oil diet induces the expression of immunosuppressive cytokine IL-10 and promotes myelopoiesis in the spleen as well as other peripheral tissues. The immature myeloid cells in the spleen exhibit morphological and functional characteristics of MDSCs with the capability to downregulate CD8(+) T cells activation. Depletion of MDSCs using anti-Gr-1 antibody decreases the growth of subcutaneously transferred B16 melanoma in mice on high fish oil diet. Interestingly, diet-induced production of MDSCs is not solely dependent of the spleen, as splenectomy has no effect on the tumor progress. Our data show that the liver functions as an alternative extramedullary hematopoiesis organ to support MDSCs differentiation and maintain tumor growth. Taken together, our study provides a novel insight into the physiological effects of fish oil and points to MDSCs as a possible mediator linking dietary fish oil intake and immunosuppression in cancer immunosurveillance.
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Affiliation(s)
- Sheng Xia
- Department of Immunology, School of Medical Science and Laboratory Medicine, Jiangsu University, 1519 Medical Building, Xuefu Road 301, Zhenjiang, 212013, Jiangsu, China,
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42
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Piazzi G, D'Argenio G, Prossomariti A, Lembo V, Mazzone G, Candela M, Biagi E, Brigidi P, Vitaglione P, Fogliano V, D'Angelo L, Fazio C, Munarini A, Belluzzi A, Ceccarelli C, Chieco P, Balbi T, Loadman PM, Hull MA, Romano M, Bazzoli F, Ricciardiello L. Eicosapentaenoic acid free fatty acid prevents and suppresses colonic neoplasia in colitis-associated colorectal cancer acting on Notch signaling and gut microbiota. Int J Cancer 2014; 135:2004-13. [PMID: 24676631 DOI: 10.1002/ijc.28853] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/06/2014] [Indexed: 12/12/2022]
Abstract
Inflammatory bowel diseases are associated with increased risk of developing colitis-associated colorectal cancer (CAC). Epidemiological data show that the consumption of ω-3 polyunsaturated fatty acids (ω-3 PUFAs) decreases the risk of sporadic colorectal cancer (CRC). Importantly, recent data have shown that eicosapentaenoic acid-free fatty acid (EPA-FFA) reduces polyp formation and growth in models of familial adenomatous polyposis. However, the effects of dietary EPA-FFA are unknown in CAC. We tested the effectiveness of substituting EPA-FFA, for other dietary fats, in preventing inflammation and cancer in the AOM-DSS model of CAC. The AOM-DSS protocols were designed to evaluate the effect of EPA-FFA on both initiation and promotion of carcinogenesis. We found that EPA-FFA diet strongly decreased tumor multiplicity, incidence and maximum tumor size in the promotion and initiation arms. Moreover EPA-FFA, in particular in the initiation arm, led to reduced cell proliferation and nuclear β-catenin expression, whilst it increased apoptosis. In both arms, EPA-FFA treatment led to increased membrane switch from ω-6 to ω-3 PUFAs and a concomitant reduction in PGE2 production. We observed no significant changes in intestinal inflammation between EPA-FFA treated arms and AOM-DSS controls. Importantly, we found that EPA-FFA treatment restored the loss of Notch signaling found in the AOM-DSS control and resulted in the enrichment of Lactobacillus species in the gut microbiota. Taken together, our data suggest that EPA-FFA is an excellent candidate for CRC chemoprevention in CAC.
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Affiliation(s)
- Giulia Piazzi
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy; Center for Applied Biomedical Research (CRBA), S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
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43
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Nicolaou A, Mauro C, Urquhart P, Marelli-Berg F. Polyunsaturated Fatty Acid-derived lipid mediators and T cell function. Front Immunol 2014; 5:75. [PMID: 24611066 PMCID: PMC3933826 DOI: 10.3389/fimmu.2014.00075] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 02/11/2014] [Indexed: 01/10/2023] Open
Abstract
Fatty acids are involved in T cell biology both as nutrients important for energy production as well as signaling molecules. In particular, polyunsaturated fatty acids are known to exhibit a range of immunomodulatory properties that progress through T cell mediated events, although the molecular mechanisms of these actions have not yet been fully elucidated. Some of these immune activities are linked to polyunsaturated fatty acid-induced alteration of the composition of cellular membranes and the consequent changes in signaling pathways linked to membrane raft-associated proteins. However, significant aspects of the polyunsaturated fatty acid bioactivities are mediated through their transformation to specific lipid mediators, products of cyclooxygenase, lipoxygenase, or cytochrome P450 enzymatic reactions. Resulting bioactive metabolites including prostaglandins, leukotrienes, and endocannabinoids are produced by and/or act upon T leukocytes through cell surface receptors and have been shown to alter T cell activation and differentiation, proliferation, cytokine production, motility, and homing events. Detailed appreciation of the mode of action of these lipids presents opportunities for the design and development of therapeutic strategies aimed at regulating T cell function.
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Affiliation(s)
- Anna Nicolaou
- Manchester Pharmacy School, Faculty of Medical and Human Sciences, The University of Manchester , Manchester , UK
| | - Claudio Mauro
- Centre for Biochemical Pharmacology, William Harvey Research Institute, Queen Mary University of London , London , UK
| | - Paula Urquhart
- Manchester Pharmacy School, Faculty of Medical and Human Sciences, The University of Manchester , Manchester , UK
| | - Federica Marelli-Berg
- Centre for Biochemical Pharmacology, William Harvey Research Institute, Queen Mary University of London , London , UK
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44
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Stonik VA, Fedorov SN. Marine low molecular weight natural products as potential cancer preventive compounds. Mar Drugs 2014; 12:636-71. [PMID: 24473167 PMCID: PMC3944507 DOI: 10.3390/md12020636] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 01/14/2014] [Accepted: 01/15/2014] [Indexed: 12/17/2022] Open
Abstract
Due to taxonomic positions and special living environments, marine organisms produce secondary metabolites that possess unique structures and biological activities. This review is devoted to recently isolated and/or earlier described marine compounds with potential or established cancer preventive activities, their biological sources, molecular mechanisms of their action, and their associations with human health and nutrition. The review covers literature published in 2003–2013 years and focuses on findings of the last 2 years.
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Affiliation(s)
- Valentin A Stonik
- Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Science, Prospect 100 let Vladivostoku, 159, Vladivostok 690950, Russia.
| | - Sergey N Fedorov
- Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Science, Prospect 100 let Vladivostoku, 159, Vladivostok 690950, Russia.
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45
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Tuna H, Avdiushko RG, Sindhava VJ, Wedlund L, Kaetzel CS, Kaplan AM, Bondada S, Cohen DA. Regulation of the mucosal phenotype in dendritic cells by PPARγ: role of tissue microenvironment. J Leukoc Biol 2013; 95:471-85. [PMID: 24295831 DOI: 10.1189/jlb.0713408] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Mucosal DCs play a critical role in tissue homeostasis. Several stimuli can induce a mucosal phenotype; however, molecular pathways that regulate development of mucosal DC function are relatively unknown. This study sought to determine whether PPARγ contributes to the development of the "mucosal" phenotype in mouse DCs. Experiments demonstrated that PPARγ activation in BMDCs induced an immunosuppressive phenotype in which BMDCs had reduced expression of MHC class II and costimulatory molecules, increased IL-10 secretion, and reduced the ability to induce CD4 T cell proliferation. Activation of PPARγ enhanced the ability of BMDC to polarize CD4 T cells toward iTregs and to induce T cell expression of the mucosal homing receptor, CCR9. Activation of PPARγ increased the ability of BMDCs to induce T cell-independent IgA production in B cells. BMDCs from PPARγ(ΔDC) mice displayed enhanced expression of costimulatory molecules, enhanced proinflammatory cytokine production, and decreased IL-10 synthesis. Contrary to the inflammatory BMDC phenotype in vitro, PPARγ(ΔDC) mice showed no change in the frequency or phenotype of mDC in the colon. In contrast, mDCs in the lungs were increased significantly in PPARγ(ΔDC) mice. A modest increase in colitis severity was observed in DSS-treated PPARγ(ΔDC) mice compared with control. These results indicate that PPARγ activation induces a mucosal phenotype in mDCs and that loss of PPARγ promotes an inflammatory phenotype. However, the intestinal microenvironment in vivo can maintain the mucosal DC phenotype of via PPARγ-independent mechanisms.
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Affiliation(s)
- Halide Tuna
- 1.Immunology and Molecular Genetics, University of Kentucky, 800 Rose St., Room MS419, Lexington, KY 40536-0298, USA.
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46
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Jang HY, Lim K, Lee SM, Park BH. Effects of n-3 PUFA on the CD4⁺ type 2 helper T-cell-mediated immune responses in Fat-1 mice. Mol Nutr Food Res 2013; 58:365-75. [PMID: 24019303 DOI: 10.1002/mnfr.201300194] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 07/01/2013] [Accepted: 07/11/2013] [Indexed: 02/06/2023]
Abstract
SCOPE It has been suggested that n-3 PUFA can be used as a preventive or therapeutic strategy to control allergic asthma. But little is known about the exact mechanisms by which n-3 PUFA modulates it. Here, the effects of elevated n-3 PUFA on ovalbumin (OVA) induced airway inflammation were investigated using Fat-1 transgenic mice that can convert n-6 PUFA to n-3 PUFA endogenously. METHODS AND RESULTS First, we tested whether Fat-1 expression modulates CD4⁺ T-cell activation, proliferation, and differentiation in vitro and found that the Fat-1 expression attenuated all of these CD4⁺ T-cell responses by suppression of T-cell receptor mediated signaling and cytokine-mediated phosphorylation of STATs. When the Fat-1 mice were sensitized and challenged with the OVA, they showed a significant decrease in the recruitment of inflammatory cells into airway, the production of Th2 cytokines, eotaxin, and mucin in the lung, and the concentration of OVA-specific IgE in the serum. Furthermore, the differentiation of CD4⁺ T cells into Th2 was also decreased in the spleen of Fat-1 mice. CONCLUSION Our results showed that an elevated level of n-3 PUFA was effective in preventing allergic airway inflammation by modulating the activation and differentiation of CD4⁺ T cells in Fat-1 mice.
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Affiliation(s)
- Hyun-Young Jang
- Department of Biochemistry and Research Institute for Endocrine Sciences, Chonbuk National University Medical School, Jeonju, Jeonbuk, Republic of Korea
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47
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Monk JM, Hou TY, Turk HF, McMurray DN, Chapkin RS. n3 PUFAs reduce mouse CD4+ T-cell ex vivo polarization into Th17 cells. J Nutr 2013; 143:1501-8. [PMID: 23864512 PMCID: PMC3743278 DOI: 10.3945/jn.113.178178] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 05/03/2013] [Accepted: 06/19/2013] [Indexed: 12/18/2022] Open
Abstract
Little is known about the impact of n3 (ω3) PUFAs on polarization of CD4(+) T cells into effector subsets other than Th1 and Th2. We assessed the effects of dietary fat [corn oil (CO) vs. fish oil (FO)] and fermentable fiber [cellulose (C) vs. pectin (P)] (2 × 2 design) in male C57BL/6 mice fed CO-C, CO-P, FO-C, or FO-P diets for 3 wk on the ex vivo polarization of purified splenic CD4(+) T cells (using magnetic microbeads) into regulatory T cells [Tregs; forkhead box P3 (Foxp3(+)) cells] or Th17 cells [interleukin (IL)-17A(+) and retinoic acid receptor-related orphan receptor (ROR) γτ(+) cells] by flow cytometry. Treg polarization was unaffected by diet; however, FO independently reduced the percentage of both CD4(+) IL-17A(+) (P < 0.05) and CD4(+) RORγτ(+) cells (P < 0.05). Moreover, expression of another critical Th17-cell-related transcription factor, signal transducer and activator of transcription 3, was reduced by FO. Dietary FO reduced the surface expression of both IL-6R and IL-23R on polarized Th17 cells (P ≤ 0.05), thus interfering with the promotive effects of these critical cytokines on Th17 polarization. Additionally, C57BL/6 mice fed diets enriched in eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), or DHA + EPA similarly reduced Th17-cell polarization in comparison to CO by reducing expression of the Th17-cell signature cytokine (IL-17A; P = 0.0015) and transcription factor (RORγτ P = 0.02), whereas Treg polarization was unaffected. Collectively, these data show that n3 PUFAs exert a direct effect on the development of Th17 cells in healthy mice, implicating a novel n3 PUFA-dependent, anti-inflammatory mechanism of action via the suppression of the initial development of this inflammatory T-cell subset.
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Affiliation(s)
- Jennifer M. Monk
- Program in Integrative Nutrition and Complex Diseases
- Department of Nutrition and Food Science, and
| | - Tim Y. Hou
- Program in Integrative Nutrition and Complex Diseases
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX; and
| | - Harmony F. Turk
- Program in Integrative Nutrition and Complex Diseases
- Department of Nutrition and Food Science, and
| | - David N. McMurray
- Department of Nutrition and Food Science, and
- Department of Microbial and Molecular Pathogenesis, Texas A&M University System Health Science Center, College Station, TX
| | - Robert S. Chapkin
- Program in Integrative Nutrition and Complex Diseases
- Department of Nutrition and Food Science, and
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX; and
- Department of Microbial and Molecular Pathogenesis, Texas A&M University System Health Science Center, College Station, TX
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48
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Dietary fish oil and DHA down-regulate antigen-activated CD4+ T-cells while promoting the formation of liquid-ordered mesodomains. Br J Nutr 2013; 111:254-60. [PMID: 23962659 DOI: 10.1017/s0007114513002444] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We have demonstrated previously that n-3 PUFA endogenously produced by fat-1 transgenic mice regulate CD4+ T-cell function by affecting the formation of lipid rafts, liquid-ordered mesodomains in the plasma membrane. In the present study, we tested the effects of dietary sources of n-3 PUFA, i.e. fish oil (FO) or purified DHA, when compared with an n-6 PUFA-enriched maize oil control diet in DO11.10 T-cell receptor transgenic mice. Dietary n-3 PUFA were enriched in CD4+ T-cells, resulting in the increase of the n-3:n-6 ratio. Following antigen-specific CD4+ T-cell activation by B-lymphoma cells pulsed with the ovalbumin 323-339 peptide, the formation of liquid-ordered mesodomains at the immunological synapse relative to the whole CD4+ T-cell, as assessed by Laurdan labelling, was increased (P< 0·05) in the FO-fed group. The FO diet also suppressed (P< 0·05) the co-localisation of PKCθ with ganglioside GM1 (monosialotetrahexosylganglioside), a marker for lipid rafts, which is consistent with previous observations. In contrast, the DHA diet down-regulated (P< 0·05) PKCθ signalling by moderately affecting the membrane liquid order at the immunological synapse, suggesting the potential contribution of the other major n-3 PUFA components of FO, including EPA.
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49
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Teague H, Rockett BD, Harris M, Brown DA, Shaikh SR. Dendritic cell activation, phagocytosis and CD69 expression on cognate T cells are suppressed by n-3 long-chain polyunsaturated fatty acids. Immunology 2013; 139:386-94. [PMID: 23373457 DOI: 10.1111/imm.12088] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 01/09/2013] [Accepted: 01/30/2013] [Indexed: 12/14/2022] Open
Abstract
Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) are bioactive n-3 long-chain polyunsaturated fatty acids (LCPUFAs) in fish oil that exert immunosuppressive effects. A significant amount of literature shows that n-3 LCPUFAs suppress dendritic cell (DC) function in vitro; however, few studies have determined if the effects are emulated at the animal level. In this study, we first focused on the functional consequences of 5% (weight/weight) fish oil on splenic CD11c(+) DCs. Administration of n-3 LCPUFAs, modelling human pharmacological intake (2% of total kcal from EPA,1·3% from DHA), to C57BL/6 mice for 3 weeks reduced DC surface expression of CD80 by 14% and tumour necrosis factor-α secretion by 29% upon lipopolysaccharide stimulation relative to a control diet. The n-3 LCPUFAs also significantly decreased CD11c(+) surface expression and phagocytosis by 12% compared with the control diet. Antigen presentation studies revealed a 22% decrease in CD69 surface expression on transgenic CD4(+) T lymphocytes activated by DCs from mice fed fish oil. We then determined if the functional changes were mechanistically associated with changes in lipid microdomain clustering or plasma membrane microviscosity with n-3 LCPUFAs, as reported for B and T lymphocytes. Fish oil administration to mice did not influence cholera-toxin induced lipid microdomain clustering or microviscosity, even though EPA and DHA levels were significantly elevated relative to the control diet. Overall, our data show that n-3 LCPUFAs exert immunosuppressive effects on DCs, validating in vitro studies. The results also show that DC microdomain clustering and microviscosity were not changed by the n-3 LCPUFA intervention used in this study.
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Affiliation(s)
- Heather Teague
- Department of Biochemistry and Molecular Biology, East Carolina University, Greenville, NC, USA
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50
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Zindl CL, Lai JF, Lee YK, Maynard CL, Harbour SN, Ouyang W, Chaplin DD, Weaver CT. IL-22-producing neutrophils contribute to antimicrobial defense and restitution of colonic epithelial integrity during colitis. Proc Natl Acad Sci U S A 2013; 110:12768-73. [PMID: 23781104 PMCID: PMC3732935 DOI: 10.1073/pnas.1300318110] [Citation(s) in RCA: 261] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
IL-22 plays an important role in mucosal epithelial cell homeostasis. Using a dextran sodium sulfate-induced mouse model of acute colitis, we observed an IL-23-dependent up-regulation of IL-22 in the middle and distal colon at the onset of epithelial cell damage. This heightened IL-22 correlated with an influx of innate immune cells, suggesting an important role in colonic epithelial protection. Freshly isolated colon-infiltrating neutrophils produced IL-22 contingent upon IL-23 signaling, and IL-22 production was augmented by TNF-α. Importantly, the depletion of neutrophils resulted in diminished IL-22 levels in the colon, and the transfer of IL-22-competent neutrophils to Il22a-deficient mice protected the colonic epithelium from dextran sodium sulfate-induced damage. In addition, IL-22-producing neutrophils targeted colonic epithelial cells to up-regulate the antimicrobial peptides, RegIIIβ and S100A8. This study establishes a role for neutrophils in providing IL-22-dependent mucosal epithelial support that contributes to the resolution of colitis.
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Affiliation(s)
- Carlene L. Zindl
- Departments of Pathology and
- Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Jen-Feng Lai
- Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Yun Kyung Lee
- Departments of Pathology and
- Division of Biology, California Institute of Technology, Pasadena, CA 91125; and
| | | | | | - Wenjun Ouyang
- Department of Immunology, Genentech, South San Francisco, CA 94080
| | - David D. Chaplin
- Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
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