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Berger E, Colosetti P, Jalabert A, Meugnier E, Wiklander OP, Jouhet J, Errazurig-Cerda E, Chanon S, Gupta D, Rautureau GJ, Geloen A, El-Andaloussi S, Panthu B, Rieusset J, Rome S. Use of Nanovesicles from Orange Juice to Reverse Diet-Induced Gut Modifications in Diet-Induced Obese Mice. Mol Ther Methods Clin Dev 2020; 18:880-892. [PMID: 32953937 PMCID: PMC7481887 DOI: 10.1016/j.omtm.2020.08.009] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 08/10/2020] [Indexed: 02/06/2023]
Abstract
We have determined whether orange juice-derived nanovesicles (ONVs) could be used for the treatment of obesity-associated intestinal complications. ONVs were characterized by lipidomic, metabolomic, electron microscopy. In vitro, intestinal barriers (IBs = Caco-2+HT-29-MTX) were treated with ONVs and co-cultured with adipocytes to monitor IB fat release. In vivo, obesity was induced with a high-fat, high-sucrose diet (HFHSD mice) for 12 weeks. Then, half of HFHSD mice were gavaged with ONVs. One-month ONV treatment did not modify HFHSD-induced insulin resistance but reversed diet-induced gut modifications. In the jejunum, ONVs increased villi size, reduced triglyceride content, and modulated mRNA levels of genes involved in immune response (tumor necrosis factor [TNF]-α and interleukin [IL]-1β), barrier permeability (CLDN1, OCLN, ZO1), fat absorption, and chylomicron release. ONVs targeted microsomal triglyceride transfer protein (MTP) and angiopoietin-like protein-4 (ANGPTL4), two therapeutic targets to reduce plasma lipids and inflammation in gastrointestinal diseases. Interestingly, ONV treatment did not aggravate liver steatosis, as MTP mRNA was increased in the liver. Therefore, ONVs protected both intestine and the liver from fat overload associated with the HFHSD. As ONVs concentrated amino acids and bioactive lipids versus orange juice, which are deficient in obese patients, the use of ONVs as a dietary supplement could bring physiological relevant compounds in the jejunum to accelerate the restoration of intestinal functions during weight loss in obese patients.
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Affiliation(s)
- Emmanuelle Berger
- CarMeN Laboratory (INRAe U1397, INSERM U1060, Lyon 1 University, INSA Lyon), Bâtiment CENS ELI-2D, Pierre-Bénite, France
| | - Pascal Colosetti
- CarMeN Laboratory (INRAe U1397, INSERM U1060, Lyon 1 University, INSA Lyon), Bâtiment CENS ELI-2D, Pierre-Bénite, France
| | - Audrey Jalabert
- CarMeN Laboratory (INRAe U1397, INSERM U1060, Lyon 1 University, INSA Lyon), Bâtiment CENS ELI-2D, Pierre-Bénite, France
| | - Emmanuelle Meugnier
- CarMeN Laboratory (INRAe U1397, INSERM U1060, Lyon 1 University, INSA Lyon), Bâtiment CENS ELI-2D, Pierre-Bénite, France
| | - Oscar P.B. Wiklander
- Department of Laboratory Medicine, Division of Biomolecular and Cellular Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden
| | - Juliette Jouhet
- Laboratoire de Physiologie Cellulaire & Végétale (LPCV), CNRS (UMR5168)/Université Grenoble Alpes/INRAe (UMR1417)/CEA Grenoble, Institut de Biosciences et Biotechnologies de Grenoble, France
| | | | - Stéphanie Chanon
- CarMeN Laboratory (INRAe U1397, INSERM U1060, Lyon 1 University, INSA Lyon), Bâtiment CENS ELI-2D, Pierre-Bénite, France
| | - Dhanu Gupta
- Department of Laboratory Medicine, Division of Biomolecular and Cellular Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden
| | - Gilles J.P. Rautureau
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, ENS de Lyon, Centre de RMN à Très Hauts Champs (CRMN), FRE 2034, Villeurbanne, France
| | - Alain Geloen
- CarMeN Laboratory (INRAe U1397, INSERM U1060, Lyon 1 University, INSA Lyon), Bâtiment CENS ELI-2D, Pierre-Bénite, France
| | - Samir El-Andaloussi
- Department of Laboratory Medicine, Division of Biomolecular and Cellular Medicine, Karolinska Institutet, 141 57 Huddinge, Sweden
| | - Baptiste Panthu
- CarMeN Laboratory (INRAe U1397, INSERM U1060, Lyon 1 University, INSA Lyon), Bâtiment CENS ELI-2D, Pierre-Bénite, France
| | - Jennifer Rieusset
- CarMeN Laboratory (INRAe U1397, INSERM U1060, Lyon 1 University, INSA Lyon), Bâtiment CENS ELI-2D, Pierre-Bénite, France
| | - Sophie Rome
- CarMeN Laboratory (INRAe U1397, INSERM U1060, Lyon 1 University, INSA Lyon), Bâtiment CENS ELI-2D, Pierre-Bénite, France
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52
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Petrick HL, Foley KP, Zlitni S, Brunetta HS, Paglialunga S, Miotto PM, Politis-Barber V, O’Dwyer C, Philbrick DJ, Fullerton MD, Schertzer JD, Holloway GP. Adipose Tissue Inflammation Is Directly Linked to Obesity-Induced Insulin Resistance, while Gut Dysbiosis and Mitochondrial Dysfunction Are Not Required. FUNCTION (OXFORD, ENGLAND) 2020; 1:zqaa013. [PMID: 34278304 PMCID: PMC8276887 DOI: 10.1093/function/zqaa013] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/17/2020] [Accepted: 08/21/2020] [Indexed: 01/06/2023]
Abstract
Obesity is associated with adipose tissue hypertrophy, systemic inflammation, mitochondrial dysfunction, and intestinal dysbiosis. Rodent models of high-fat diet (HFD)-feeding or genetic deletion of multifunctional proteins involved in immunity and metabolism are often used to probe the etiology of obesity; however, these models make it difficult to divorce the effects of obesity, diet composition, or immunity on endocrine regulation of blood glucose. We, therefore, investigated the importance of adipose inflammation, mitochondrial dysfunction, and gut dysbiosis for obesity-induced insulin resistance using a spontaneously obese mouse model. We examined metabolic changes in skeletal muscle, adipose tissue, liver, the intestinal microbiome, and whole-body glucose control in spontaneously hyperphagic C57Bl/6J mice compared to lean littermates. A separate subset of lean and obese mice was subject to 8 weeks of obesogenic HFD feeding, or to pair feeding of a standard rodent diet. Hyperphagia, obesity, adipose inflammation, and insulin resistance were present in obese mice despite consuming a standard rodent diet, and these effects were blunted with caloric restriction. However, hyperphagic obese mice had normal mitochondrial respiratory function in all tissues tested and no discernable intestinal dysbiosis relative to lean littermates. In contrast, feeding mice an obesogenic HFD altered the composition of the gut microbiome, impaired skeletal muscle mitochondrial bioenergetics, and promoted poor glucose control. These data show that adipose inflammation and redox stress occurred in all models of obesity, but gut dysbiosis and mitochondrial respiratory dysfunction are not always required for obesity-induced insulin resistance. Rather, changes in the intestinal microbiome and mitochondrial bioenergetics may reflect physiological consequences of HFD feeding.
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Affiliation(s)
- Heather L Petrick
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Kevin P Foley
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Soumaya Zlitni
- Departments of Genetics and Medicine, Stanford University, Stanford, 94305, CA, USA
| | - Henver S Brunetta
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada,Department of Physiological Sciences, Federal University of Santa Catarina, Florianopolis, Santa Catarina, Brazil
| | - Sabina Paglialunga
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Paula M Miotto
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Valerie Politis-Barber
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Conor O’Dwyer
- Department of Biochemistry, Microbiology and Immunology, Centre for Inflammation, Infection and Immunity, Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, ON, Canada
| | - Diana J Philbrick
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada
| | - Morgan D Fullerton
- Department of Biochemistry, Microbiology and Immunology, Centre for Inflammation, Infection and Immunity, Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, ON, Canada
| | - Jonathan D Schertzer
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Graham P Holloway
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada,Address correspondence to G.P.H. (e-mail: )
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Postal BG, Ghezzal S, Aguanno D, André S, Garbin K, Genser L, Brot-Laroche E, Poitou C, Soula H, Leturque A, Clément K, Carrière V. AhR activation defends gut barrier integrity against damage occurring in obesity. Mol Metab 2020; 39:101007. [PMID: 32360426 PMCID: PMC7267728 DOI: 10.1016/j.molmet.2020.101007] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/03/2020] [Accepted: 04/22/2020] [Indexed: 12/24/2022] Open
Abstract
Objective Obesity is characterized by systemic and low-grade tissue inflammation. In the intestine, alteration of the intestinal barrier and accumulation of inflammatory cells in the epithelium are important contributors of gut inflammation. Recent studies demonstrated the role of the aryl hydrocarbon receptor (AhR) in the maintenance of immune cells at mucosal barrier sites. A wide range of ligands of external and local origin can activate this receptor. We studied the causal relationship between AhR activation and gut inflammation in obesity. Methods Jejunum samples from subjects with normal weight and severe obesity were phenotyped according to T lymphocyte infiltration in the epithelium from lamina propria and assayed for the mRNA level of AhR target genes. The effect of an AhR agonist was studied in mice and Caco-2/TC7 cells. AhR target gene expression, permeability to small molecules and ions, and location of cell-cell junction proteins were recorded under conditions of altered intestinal permeability. Results We showed that a low AhR tone correlated with a high inflammatory score in the intestinal epithelium in severe human obesity. Moreover, AhR activation protected junctional complexes in the intestinal epithelium in mice challenged by an oral lipid load. AhR ligands prevented chemically induced damage to barrier integrity and cytokine expression in Caco-2/TC7 cells. The PKC and p38MAPK signaling pathways were involved in this AhR action. Conclusions The results of these series of human, mouse, and cell culture experiments demonstrate the protective effect of AhR activation in the intestine targeting particularly tight junctions and cytokine expression. We propose that AhR constitutes a valuable target to protect intestinal functions in metabolic diseases, which can be achieved in the future via food or drug ligands. Intestinal inflammation in obese subjects correlates with low AhR activity. AhR activation protects intestinal epithelium from damages. AhR activation prevents cytokine induction in response to damages. Protective role of AhR activation targets junctional complexes. Protein kinases-dependent signaling pathways are involved in AhR action.
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Affiliation(s)
- Bárbara G Postal
- Cordeliers Research Center, Sorbonne University, Paris Dauphine University 05, INSERM, CNRS, F-75006, Paris, France; Saint-Antoine Research Center, Sorbonne University, INSERM, F-75012, Paris, France
| | - Sara Ghezzal
- Cordeliers Research Center, Sorbonne University, Paris Dauphine University 05, INSERM, CNRS, F-75006, Paris, France
| | - Doriane Aguanno
- Cordeliers Research Center, Sorbonne University, Paris Dauphine University 05, INSERM, CNRS, F-75006, Paris, France; Saint-Antoine Research Center, Sorbonne University, INSERM, F-75012, Paris, France; EPHE, PSL Research University, F-75006, Paris, France
| | - Sébastien André
- Sorbonne University, INSERM, NutriOmics Research Unit Paris, F-75013, France
| | - Kevin Garbin
- CHIC Platform of Cordeliers Research Center, Sorbonne University, UPD Univ Paris 05, INSERM, F-75006, Paris, France
| | - Laurent Genser
- Sorbonne University, INSERM, NutriOmics Research Unit Paris, F-75013, France
| | - Edith Brot-Laroche
- Cordeliers Research Center, Sorbonne University, Paris Dauphine University 05, INSERM, CNRS, F-75006, Paris, France
| | - Christine Poitou
- Sorbonne University, INSERM, NutriOmics Research Unit Paris, F-75013, France; Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Nutrition Department, CRNH Ile de France, F-75013, Paris, France
| | - Hédi Soula
- Sorbonne University, INSERM, NutriOmics Research Unit Paris, F-75013, France
| | - Armelle Leturque
- Cordeliers Research Center, Sorbonne University, Paris Dauphine University 05, INSERM, CNRS, F-75006, Paris, France; Sorbonne University, INSERM, NutriOmics Research Unit Paris, F-75013, France
| | - Karine Clément
- Sorbonne University, INSERM, NutriOmics Research Unit Paris, F-75013, France; Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Nutrition Department, CRNH Ile de France, F-75013, Paris, France
| | - Véronique Carrière
- Cordeliers Research Center, Sorbonne University, Paris Dauphine University 05, INSERM, CNRS, F-75006, Paris, France; Saint-Antoine Research Center, Sorbonne University, INSERM, F-75012, Paris, France.
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54
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Le Gall M, Thenet S, Aguanno D, Jarry AC, Genser L, Ribeiro-Parenti L, Joly F, Ledoux S, Bado A, Le Beyec J. Intestinal plasticity in response to nutrition and gastrointestinal surgery. Nutr Rev 2020; 77:129-143. [PMID: 30517714 DOI: 10.1093/nutrit/nuy064] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The plasticity of a material corresponds to its capacity to change its feature under the effect of an external action. Intestinal plasticity could be defined as the ability of the intestine to modify its size or thickness and intestinal cells to modulate their absorption and secretion functions in response to external or internal cues/signals. This review will focus on intestinal adaptation mechanisms in response to diet and nutritional status. These physiological mechanisms allow a fine and rapid adaptation of the gut to promote absorption of ingested food, but they can also lead to obesity in response to overnutrition. This plasticity could thus become a therapeutic target to treat not only undernutrition but also obesity. How the intestine adapts in response to 2 types of surgical remodeling of the digestive tract-extensive bowel resection leading to intestinal failure and surgical treatment of pathological obesity (ie, bariatric surgeries)-will also be reviewed.
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Affiliation(s)
- Maude Le Gall
- Centre de Recherche sur l'Inflammation, Inserm UMRS _1149, Université Paris Diderot, AP-HP, Paris, France
| | - Sophie Thenet
- Centre de Recherche des Cordeliers, Sorbonne Université, EPHE, PSL University, Sorbonne Cités, UPD Univ Paris 05, INSERM, CNRS, Paris, France
| | - Doriane Aguanno
- Centre de Recherche des Cordeliers, Sorbonne Université, EPHE, PSL University, Sorbonne Cités, UPD Univ Paris 05, INSERM, CNRS, Paris, France
| | - Anne-Charlotte Jarry
- Centre de Recherche sur l'Inflammation, Inserm UMRS _1149, Université Paris Diderot, AP-HP, Paris, France
| | - Laurent Genser
- Sorbonne Université, INSERM, Nutriomics Team, Paris, France, and the Assistance Publique-Hôpitaux de Paris, Pitié-Salpêtrière Hospital, Department of Hepato-Biliary and Pancreatic Surgery, Liver Transplantation, Paris, France
| | - Lara Ribeiro-Parenti
- Centre de Recherche sur l'Inflammation, Inserm UMRS _1149, Université Paris Diderot, AP-HP, Paris, France.,Department of General and Digestive Surgery, University Hospital Bichat-Claude-Bernard, Paris, France
| | - Francisca Joly
- Centre de Recherche sur l'Inflammation, Inserm UMRS _1149, Université Paris Diderot, AP-HP, Paris, France.,Department of Gastroenterology, Inflammatory Bowel Diseases, Nutritional Support and Intestinal Transplantation, Paris, France
| | - Séverine Ledoux
- Centre de Recherche sur l'Inflammation, Inserm UMRS _1149, Université Paris Diderot, AP-HP, Paris, France.,Service des Explorations Fonctionnelles, Centre de référence de prise en charge de l'obésité, GHUPNVS, Hôpital Louis Mourier, Colombes, France
| | - André Bado
- Centre de Recherche sur l'Inflammation, Inserm UMRS _1149, Université Paris Diderot, AP-HP, Paris, France
| | - Johanne Le Beyec
- Centre de Recherche sur l'Inflammation, Inserm UMRS _1149, Université Paris Diderot, AP-HP, Paris, France.,Sorbonne Université, AP-HP, Hôpital Pitié-Salpêtrière-Charles Foix, Biochimie Endocrinienne et Oncologique, Paris, France
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55
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Bahlouli W, Breton J, Lelouard M, L'Huillier C, Tirelle P, Salameh E, Amamou A, Atmani K, Goichon A, Bôle-Feysot C, Ducrotté P, Ribet D, Déchelotte P, Coëffier M. Stress-induced intestinal barrier dysfunction is exacerbated during diet-induced obesity. J Nutr Biochem 2020; 81:108382. [PMID: 32417626 DOI: 10.1016/j.jnutbio.2020.108382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 02/21/2020] [Accepted: 03/13/2020] [Indexed: 02/06/2023]
Abstract
Obesity and irritable bowel syndrome (IBS) are two major public health issues. Interestingly previous data report a marked increase of IBS prevalence in morbid obese subjects compared with non-obese subjects but underlying mechanisms remain unknown. Obesity and IBS share common intestinal pathophysiological mechanisms such as gut dysbiosis, intestinal hyperpermeability and low-grade inflammatory response. We thus aimed to evaluate the link between obesity and IBS using different animal models. Male C57Bl/6 mice received high fat diet (HFD) for 12 weeks and were then submitted to water avoidance stress (WAS). In response to WAS, HFD mice exhibited higher intestinal permeability and plasma corticosterone concentration than non-obese mice. We were not able to reproduce a similar response both in ob/ob mice and in leptin-treated non-obese mice. In addition, metformin, a hypoglycemic agent, limited fasting glycaemia both in unstressed and WAS diet-induced obese mice but only partially restored colonic permeability in unstressed HFD mice. Metformin failed to improve intestinal permeability in WAS HFD mice. Finally, cecal microbiota transplantation from HFD mice in antibiotics-treated recipient mice did not reproduce the effects observed in stressed HFD mice. In conclusion, stress induced a more marked intestinal barrier dysfunction in diet-induced obese mice compared with non-obese mice that seems to be independent of leptin, glycaemia and gut microbiota. These data should be further confirmed and the role of the dietary composition should be studied.
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Affiliation(s)
- Wafa Bahlouli
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Jonathan Breton
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Mauranne Lelouard
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Clément L'Huillier
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Pauline Tirelle
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Emmeline Salameh
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Asma Amamou
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Karim Atmani
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Alexis Goichon
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Christine Bôle-Feysot
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Philippe Ducrotté
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France; Department of Gastroenterology, Rouen University Hospital, 76183 Rouen, France
| | - David Ribet
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France
| | - Pierre Déchelotte
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France; Department of Nutrition, Rouen University Hospital, 76183 Rouen, France
| | - Moïse Coëffier
- Normandie University, UNIROUEN, INSERM UMR 1073 "Nutrition, inflammation and gut-brain axis", 76183 Rouen, France; Institute of Research and Innovation in Biomedicine (IRIB), UNIROUEN, 76183 Rouen, France; Department of Nutrition, Rouen University Hospital, 76183 Rouen, France.
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Terzo S, Mulè F, Caldara GF, Baldassano S, Puleio R, Vitale M, Cassata G, Ferrantelli V, Amato A. Pistachio Consumption Alleviates Inflammation and Improves Gut Microbiota Composition in Mice Fed a High-Fat Diet. Int J Mol Sci 2020; 21:ijms21010365. [PMID: 31935892 PMCID: PMC6981517 DOI: 10.3390/ijms21010365] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/02/2020] [Accepted: 01/04/2020] [Indexed: 12/12/2022] Open
Abstract
High-fat diet (HFD) induces inflammation and microbial dysbiosis, which are components of the metabolic syndrome. Nutritional strategies can be a valid tool to prevent metabolic and inflammatory diseases. The aim of the present study was to evaluate if the chronic intake of pistachio prevents obesity-associated inflammation and dysbiosis in HFD-fed mice. Three groups of male mice (four weeks old; n = 8 per group) were fed for 16 weeks with a standard diet (STD), HFD, or HFD supplemented with pistachios (HFD-P; 180 g/kg of HFD). Serum, hepatic and adipose tissue inflammation markers were analyzed in HFD-P animals and compared to HFD and STD groups. Measures of inflammation, obesity, and intestinal integrity were assessed. Fecal samples were collected for gut microbiota analysis. Serum TNF-α and IL-1β levels were significantly reduced in HFD-P compared to HFD. Number and area of adipocytes, crown-like structure density, IL-1β, TNF-α, F4-80, and CCL-2 mRNA expression levels were significantly reduced in HFD-P subcutaneous and visceral adipose tissues, compared to HFD. A significant reduction in the number of inflammatory foci and IL-1β and CCL-2 gene expression was observed in the liver of HFD-P mice compared with HFD. Firmicutes/Bacteroidetes ratio was reduced in HFD-P mice in comparison to the HFD group. A pistachio diet significantly increased abundance of healthy bacteria genera such as Parabacteroides, Dorea, Allobaculum, Turicibacter, Lactobacillus, and Anaeroplasma, and greatly reduced bacteria associated with inflammation, such as Oscillospira, Desulfovibrio, Coprobacillus, and Bilophila. The intestinal conductance was lower in HFD-P mice than in the HFD mice, suggesting an improvement in the gut barrier function. The results of the present study showed that regular pistachio consumption improved inflammation in obese mice. The positive effects could be related to positive modulation of the microbiota composition.
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Affiliation(s)
- Simona Terzo
- Department of Experimental Biomedicine and Clinical Neuroscience (BioNec), University of Palermo, Via del Vespro 129, 90127 Palermo, Italy;
- Department of Biological- Chemical- Pharmaceutical Science and Technology (STEBICEF), University of Palermo- Viale delle Scienze, Edificio 16, 90128 Palermo, Italy; (F.M.); (G.F.C.); (S.B.)
| | - Flavia Mulè
- Department of Biological- Chemical- Pharmaceutical Science and Technology (STEBICEF), University of Palermo- Viale delle Scienze, Edificio 16, 90128 Palermo, Italy; (F.M.); (G.F.C.); (S.B.)
| | - Gaetano Felice Caldara
- Department of Biological- Chemical- Pharmaceutical Science and Technology (STEBICEF), University of Palermo- Viale delle Scienze, Edificio 16, 90128 Palermo, Italy; (F.M.); (G.F.C.); (S.B.)
| | - Sara Baldassano
- Department of Biological- Chemical- Pharmaceutical Science and Technology (STEBICEF), University of Palermo- Viale delle Scienze, Edificio 16, 90128 Palermo, Italy; (F.M.); (G.F.C.); (S.B.)
| | - Roberto Puleio
- Istituto Zooprofilattico Sperimentale della Sicilia “A. Mirri”, Via Gino Marinuzzi 3, 90129 Palermo, Italy; (R.P.); (M.V.); (G.C.); (V.F.)
| | - Maria Vitale
- Istituto Zooprofilattico Sperimentale della Sicilia “A. Mirri”, Via Gino Marinuzzi 3, 90129 Palermo, Italy; (R.P.); (M.V.); (G.C.); (V.F.)
| | - Giovanni Cassata
- Istituto Zooprofilattico Sperimentale della Sicilia “A. Mirri”, Via Gino Marinuzzi 3, 90129 Palermo, Italy; (R.P.); (M.V.); (G.C.); (V.F.)
| | - Vincenzo Ferrantelli
- Istituto Zooprofilattico Sperimentale della Sicilia “A. Mirri”, Via Gino Marinuzzi 3, 90129 Palermo, Italy; (R.P.); (M.V.); (G.C.); (V.F.)
| | - Antonella Amato
- Department of Biological- Chemical- Pharmaceutical Science and Technology (STEBICEF), University of Palermo- Viale delle Scienze, Edificio 16, 90128 Palermo, Italy; (F.M.); (G.F.C.); (S.B.)
- Correspondence: ; Tel.: +39-091-23897506
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Human Postprandial Nutrient Metabolism and Low-Grade Inflammation: A Narrative Review. Nutrients 2019; 11:nu11123000. [PMID: 31817857 PMCID: PMC6950246 DOI: 10.3390/nu11123000] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/03/2019] [Accepted: 12/04/2019] [Indexed: 12/11/2022] Open
Abstract
The importance of the postprandial state has been acknowledged, since hyperglycemia and hyperlipidemia are linked with several chronic systemic low-grade inflammation conditions. Humans spend more than 16 h per day in the postprandial state and the postprandial state is acknowledged as a complex interplay between nutrients, hormones and diet-derived metabolites. The purpose of this review is to provide insight into the physiology of the postprandial inflammatory response, the role of different nutrients, the pro-inflammatory effects of metabolic endotoxemia and the anti-inflammatory effects of bile acids. Moreover, we discuss nutritional strategies that may be linked to the described pathways to modulate the inflammatory component of the postprandial response.
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Park C, Cheung KP, Limon N, Costanzo A, Barba C, Miranda N, Gargas S, Johnson AMF, Olefsky JM, Jameson JM. Obesity Modulates Intestinal Intraepithelial T Cell Persistence, CD103 and CCR9 Expression, and Outcome in Dextran Sulfate Sodium–Induced Colitis. THE JOURNAL OF IMMUNOLOGY 2019; 203:3427-3435. [DOI: 10.4049/jimmunol.1900082] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 10/17/2019] [Indexed: 12/18/2022]
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Kikuchi T, Nakae J, Kawano Y, Watanabe N, Onodera M, Itoh H. Foxo in T Cells Regulates Thermogenic Program through Ccr4/Ccl22 Axis. iScience 2019; 22:81-96. [PMID: 31756626 PMCID: PMC6880116 DOI: 10.1016/j.isci.2019.11.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 09/21/2019] [Accepted: 11/01/2019] [Indexed: 12/14/2022] Open
Abstract
Crosstalk between immunity and the thermogenic program has provided insight into metabolic energy regulation. Here, we generated thermogenic program-accelerating mice (T-QKO), in which Foxo1 is knockout and Foxo3 is hetero-knockout in CD4+ T cells. T-QKO exhibit lean phenotype under HFD due to increased energy expenditure. Cold exposure significantly increased expression of the thermogenic genes (Ppargc1a and Ucp1), Th2 cytokines (Il4 and Il13), and Th2 marker gene (Gata3) in subcutaneous adipose tissue (SC) of T-QKO. Furthermore, Ccr4 expression was significantly increased in Th2 cells of T-QKO, and cold exposure induced Ccl22 expression in SC, leading to increased accumulation of Th2 cell population in SC of T-QKO. These data reveal a mechanism by which cold exposure induces selective recruitment of Th2 cells into SC, leading to regulation of energy expenditure by generating beige adipocyte and suggest that inhibition of Foxo in T cells may support a strategy to prevent and treat obesity. T-QKO increases Gata3 and Ccr4 expression in CD4+ T cells Cold exposure increases Ccl22 expression in subcutaneous adipose tissue Cold exposure increases SC-specific recruitment of Th2 cells in T-QKO Recruited Th2 cells secrete IL-4 and IL-13 and increase beiging of adipocytes
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Affiliation(s)
- Tetsuhiro Kikuchi
- Navigation Medicine of Kidney and Metabolism, Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Jun Nakae
- Navigation Medicine of Kidney and Metabolism, Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan; Department of Physiology, International University of Health and Welfare School of Medicine, Narita 286-8686, Japan.
| | - Yoshinaga Kawano
- Navigation Medicine of Kidney and Metabolism, Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Nobuyuki Watanabe
- Department of Human Genetics, National Center for Child Health and Development, Tokyo 157-8535, Japan
| | - Masafumi Onodera
- Department of Human Genetics, National Center for Child Health and Development, Tokyo 157-8535, Japan
| | - Hiroshi Itoh
- Navigation Medicine of Kidney and Metabolism, Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
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60
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Yoon N, Dadson K, Dang T, Chu T, Noskovicova N, Hinz B, Raignault A, Thorin E, Kim S, Jeon JS, Jonkman J, McKee TD, Grant J, Peterson JD, Kelly SP, Sweeney G. Tracking adiponectin biodistribution via fluorescence molecular tomography indicates increased vascular permeability after streptozotocin-induced diabetes. Am J Physiol Endocrinol Metab 2019; 317:E760-E772. [PMID: 31310580 PMCID: PMC6879865 DOI: 10.1152/ajpendo.00564.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Adiponectin, a highly abundant polypeptide hormone in plasma, plays an important role in the regulation of energy metabolism in a wide variety of tissues, as well as providing important beneficial effects in diabetes, inflammation, and cardiovascular disease. To act on target tissues, adiponectin must move from the circulation to the interstitial space, suggesting that vascular permeability plays an important role in regulating adiponectin action. To test this hypothesis, fluorescently labeled adiponectin was used to monitor its biodistribution in mice with streptozotocin-induced diabetes (STZD). Adiponectin was, indeed, found to have increased sequestration in the highly fenestrated liver and other tissues within 90 min in STZD mice. In addition, increased myocardial adiponectin was detected and confirmed using computed tomography (CT) coregistration. This provided support of adiponectin delivery to affected cardiac tissue as a cardioprotective mechanism. Higher adiponectin content in the STZD heart tissues was further examined by ex vivo fluorescence molecular tomography (FMT) imaging, immunohistochemistry, and Western blot analysis. In vitro mechanistic studies using an endothelial monolayer on inserts and three-dimensional microvascular networks on microfluidic chips further confirmed that adiponectin flux was increased by high glucose. However, in the in vitro model and mouse heart tissue, high glucose levels did not change adiponectin receptor levels. An examination of the tight junction (TJ) complex revealed a decrease in the TJ protein claudin (CLDN)-7 in high glucose-treated endothelial cells, and the functional significance of this change was underscored by increased endothelium permeability upon siRNA-mediated knockdown of CLDN-7. Our data support the idea that glucose-induced effects on permeability of the vascular endothelium contribute to the actions of adiponectin by regulating its transendothelial movement from blood to the interstitial space. These observations are physiologically significant and critical when considering ways to harness the therapeutic potential of adiponectin for diabetes.
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Affiliation(s)
- Nanyoung Yoon
- Department of Biology, York University, Toronto, Canada
| | - Keith Dadson
- Department of Biology, York University, Toronto, Canada
| | - Thanh Dang
- Department of Biology, York University, Toronto, Canada
| | - Teresa Chu
- Department of Biology, York University, Toronto, Canada
| | | | - Boris Hinz
- Faculty of Dentistry, University of Toronto, Toronto, Canada
| | | | - Eric Thorin
- Montreal Heart Institute, University of Montreal, Quebec, Canada
| | - Seunggyu Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
- KAIST Institute for Health Science and Technology, Korea & Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Jessie S Jeon
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
- KAIST Institute for Health Science and Technology, Korea & Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - James Jonkman
- Advanced Optical Microscopy Facility, University Health Network, Toronto, Canada
| | - Trevor D McKee
- Spatio-temporal Targeting and Amplification of Radiation Response, University Health Network, Toronto, Canada
| | - Justin Grant
- Spatio-temporal Targeting and Amplification of Radiation Response, University Health Network, Toronto, Canada
| | - Jeffrey D Peterson
- Applied Biology, Life Sciences & Technology, PerkinElmer, Hopkinton, Massachusetts
| | - Scott P Kelly
- Department of Biology, York University, Toronto, Canada
| | - Gary Sweeney
- Department of Biology, York University, Toronto, Canada
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Singh G, Brass A, Knight CG, Cruickshank SM. Gut eosinophils and their impact on the mucus-resident microbiota. Immunology 2019; 158:194-205. [PMID: 31433857 PMCID: PMC6797872 DOI: 10.1111/imm.13110] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 06/11/2019] [Accepted: 07/25/2019] [Indexed: 12/27/2022] Open
Abstract
The gut has the largest commensal bacterial population in the body and its composition can be impacted by host factors such as production of immunoglobulin A (IgA). Eosinophils in the gut have been implicated in the production of antibacterial factors and maintenance of IgA‐secreting plasma cells. We used an eosinophil‐deficient mouse (∆dblGATA‐1−/−) and littermate controls to investigate the role of eosinophils in the regulation of the microbiota, with particular emphasis on mucus‐resident species in the small and large intestine. We found no differences in IgA production or IgA‐expressing plasma cells between naive littermates in the small or large intestine. However, denaturing gel gradient electrophoresis revealed differences in the bacterial communities of the mucus and stools between wild‐type mice and ∆dblGATA‐1−/− mice, with the greatest separation between the mucus microbial communities. Mucus‐resident bacteria in ∆dblGATA‐1−/− mice had reduced diversity in the mucus compared with the stools. A quantitative PCR panel of selected bacteria showed that the most significant differences in the microbiota were between mucus‐resident bacteria and those in stool, such as the abundance of Clostridiales and Bacteroides. Our data implicate eosinophils in the regulation of the microbiota, especially the bacteria most hyperlocal to the gut barrier. Although we see differences between host genotypes in the overall microbial communities, further work is required to establish specifically which bacteria are different between these groups. Most importantly, the data revealed that the mucus and stool microbiota are discrete communities. Stool analysis alone may be insufficient to comprehensively explore and define the role of the gut microbiota in health and disease.
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Affiliation(s)
- Gurdeep Singh
- Faculty of Biology, Medicine and Health, Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Andrew Brass
- Faculty of Biology, Medicine and Health, Division of Informatics, Imaging and Data Sciences, The University of Manchester, Manchester, UK
| | - Christopher G Knight
- Faculty of Science and Engineering, School of Natural Sciences, The University of Manchester, Manchester, UK
| | - Sheena M Cruickshank
- Faculty of Biology, Medicine and Health, Lydia Becker Institute of Immunology and Inflammation, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
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Tilg H, Zmora N, Adolph TE, Elinav E. The intestinal microbiota fuelling metabolic inflammation. Nat Rev Immunol 2019; 20:40-54. [DOI: 10.1038/s41577-019-0198-4] [Citation(s) in RCA: 377] [Impact Index Per Article: 75.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/05/2019] [Indexed: 02/06/2023]
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63
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Wollam J, Riopel M, Xu YJ, Johnson AMF, Ofrecio JM, Ying W, El Ouarrat D, Chan LS, Han AW, Mahmood NA, Ryan CN, Lee YS, Watrous JD, Chordia MD, Pan D, Jain M, Olefsky JM. Microbiota-Produced N-Formyl Peptide fMLF Promotes Obesity-Induced Glucose Intolerance. Diabetes 2019; 68:1415-1426. [PMID: 31010956 PMCID: PMC6609982 DOI: 10.2337/db18-1307] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 04/08/2019] [Indexed: 12/14/2022]
Abstract
The composition of the gastrointestinal microbiota and associated metabolites changes dramatically with diet and the development of obesity. Although many correlations have been described, specific mechanistic links between these changes and glucose homeostasis remain to be defined. Here we show that blood and intestinal levels of the microbiota-produced N-formyl peptide, formyl-methionyl-leucyl-phenylalanine, are elevated in high-fat diet-induced obese mice. Genetic or pharmacological inhibition of the N-formyl peptide receptor Fpr1 leads to increased insulin levels and improved glucose tolerance, dependent upon glucagon-like peptide 1. Obese Fpr1 knockout mice also display an altered microbiome, exemplifying the dynamic relationship between host metabolism and microbiota. Overall, we describe a new mechanism by which the gut microbiota can modulate glucose metabolism, providing a potential approach for the treatment of metabolic disease.
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Affiliation(s)
- Joshua Wollam
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Matthew Riopel
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Yong-Jiang Xu
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
- Department of Pharmacology, University of California, San Diego, La Jolla, CA
| | - Andrew M F Johnson
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Jachelle M Ofrecio
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Wei Ying
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Dalila El Ouarrat
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
| | | | | | | | | | - Yun Sok Lee
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
| | - Jeramie D Watrous
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
- Department of Pharmacology, University of California, San Diego, La Jolla, CA
| | - Mahendra D Chordia
- Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA
| | - Dongfeng Pan
- Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA
| | - Mohit Jain
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
- Department of Pharmacology, University of California, San Diego, La Jolla, CA
| | - Jerrold M Olefsky
- Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Diego, La Jolla, CA
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Filippone RT, Sahakian L, Apostolopoulos V, Nurgali K. Eosinophils in Inflammatory Bowel Disease. Inflamm Bowel Dis 2019; 25:1140-1151. [PMID: 30856253 DOI: 10.1093/ibd/izz024] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Indexed: 12/16/2022]
Abstract
Clinical investigations in inflammatory bowel disease (IBD) patients have provided increasing evidence that eosinophils contribute to chronic intestinal inflammation. Accumulation of eosinophils in the gastrointestinal tract correlates with the variations of eosinophil regulatory molecules; however, their role in gastrointestinal dysfunction in IBD has not been fully elucidated. This review will describe the development and characterization of gastrointestinal eosinophils, mechanisms of eosinophil recruitment to the gastrointestinal tract. Moreover, the eosinophil-induced changes to the enteric nervous system associated with disease severity and gastrointestinal dysfunction will be analyzed with suggestive molecular pathways for enteric neuronal injury. Current and potential therapeutic interventions targeting eosinophils will be discussed.
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Affiliation(s)
- Rhiannon T Filippone
- College of Health and Biomedicine, Institute for Health and Sport, Victoria University, Melbourne, Australia
| | - Lauren Sahakian
- College of Health and Biomedicine, Institute for Health and Sport, Victoria University, Melbourne, Australia
| | - Vasso Apostolopoulos
- College of Health and Biomedicine, Institute for Health and Sport, Victoria University, Melbourne, Australia
| | - Kulmira Nurgali
- College of Health and Biomedicine, Institute for Health and Sport, Victoria University, Melbourne, Australia.,Department of Medicine Western Health, Melbourne University, Melbourne, Australia.,Australian Institute for Musculoskeletal Science (AIMSS), Melbourne, Australia
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65
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Hussain M, Bonilla-Rosso G, Kwong Chung CKC, Bäriswyl L, Rodriguez MP, Kim BS, Engel P, Noti M. High dietary fat intake induces a microbiota signature that promotes food allergy. J Allergy Clin Immunol 2019; 144:157-170.e8. [PMID: 30768991 DOI: 10.1016/j.jaci.2019.01.043] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 12/17/2018] [Accepted: 01/23/2019] [Indexed: 01/16/2023]
Abstract
BACKGROUND Diet-induced obesity and food allergies increase in tandem, but a potential cause-and-effect relationship between these diseases of affluence remains to be tested. OBJECTIVE We sought to test the role of high dietary fat intake, diet-induced obesity, and associated changes in gut microbial community structure on food allergy pathogenesis. METHODS Mice were fed a high-fat diet (HFD) for 12 weeks before food allergen sensitization on an atopic dermatitis-like skin lesion, followed by intragastric allergen challenge to induce experimental food allergy. Germ-free animals were colonized with a signature HFD or lean microbiota for 8 weeks before induction of food allergy. Food-induced allergic responses were quantified by using a clinical allergy score, serum IgE levels, serum mouse mast cell protease 1 concentrations, and type 2 cytokine responses. Accumulation of intestinal mast cells was examined by using flow cytometry and chloroacetate esterase tissue staining. Changes in the gut microbial community structure were assessed by using high-throughput 16S ribosomal DNA gene sequencing. RESULTS HFD-induced obesity potentiates food-induced allergic responses associated with dysregulated intestinal effector mast cell responses, increased intestinal permeability, and gut dysbiosis. An HFD-associated microbiome was transmissible to germ-free mice, with the gut microbial community structure of recipients segregating according to the microbiota input source. Independent of an obese state, an HFD-associated gut microbiome was sufficient to confer enhanced susceptibility to food allergy. CONCLUSION These findings identify HFD-induced microbial alterations as risk factors for experimental food allergy and uncouple a pathogenic role of an HFD-associated microbiome from obesity. Postdieting microbiome alterations caused by overindulgence of dietary fat might increase susceptibility to food allergy.
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Affiliation(s)
- Maryam Hussain
- Institute of Pathology, Department of Experimental Pathology, University of Bern, Bern, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Germán Bonilla-Rosso
- Department of Fundamental Microbiology, University of Lausanne, Lausanne, Switzerland
| | - Cheong K C Kwong Chung
- Institute of Pathology, Department of Experimental Pathology, University of Bern, Bern, Switzerland
| | - Lukas Bäriswyl
- Institute of Pathology, Department of Experimental Pathology, University of Bern, Bern, Switzerland
| | - Maria Pena Rodriguez
- Institute of Pathology, Department of Experimental Pathology, University of Bern, Bern, Switzerland
| | - Brian S Kim
- Division of Dermatology, Department of Medicine, Washington University School of Medicine, St Louis, Mo
| | - Philipp Engel
- Department of Fundamental Microbiology, University of Lausanne, Lausanne, Switzerland
| | - Mario Noti
- Institute of Pathology, Department of Experimental Pathology, University of Bern, Bern, Switzerland.
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Abstract
Immune cells are present in the adipose tissue (AT) and regulate its function. Under lean conditions, immune cells predominantly of type 2 immunity, including eosinophils, M2-like anti-inflammatory macrophages and innate lymphoid cells 2, contribute to the maintenance of metabolic homeostasis within the AT. In the course of obesity, pro-inflammatory immune cells, such as M1-like macrophages, prevail in the AT. Inflammation in the obese AT is associated with the development of metabolic complications such as insulin resistance, type 2 diabetes and cardiovascular disease. Thus, the immune cell-adipocyte crosstalk in the AT is an important regulator of AT function and systemic metabolism. We discuss herein this crosstalk with a special focus on the role of innate immune cells in AT inflammation and metabolic homeostasis in obesity.
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Affiliation(s)
- Kyoung-Jin Chung
- Paul Langerhans Institute Dresden of the Helmholtz Center Munich, University Hospital and Faculty of Medicine, TU Dresden, Dresden, Germany.
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany.
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, TU Dresden, Fetscherstrasse 74, 01307, Dresden, Germany.
| | - Marina Nati
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, TU Dresden, Fetscherstrasse 74, 01307, Dresden, Germany
| | - Triantafyllos Chavakis
- Paul Langerhans Institute Dresden of the Helmholtz Center Munich, University Hospital and Faculty of Medicine, TU Dresden, Dresden, Germany.
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany.
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, TU Dresden, Fetscherstrasse 74, 01307, Dresden, Germany.
| | - Antonios Chatzigeorgiou
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, TU Dresden, Fetscherstrasse 74, 01307, Dresden, Germany
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Impaired Aryl Hydrocarbon Receptor Ligand Production by the Gut Microbiota Is a Key Factor in Metabolic Syndrome. Cell Metab 2018; 28:737-749.e4. [PMID: 30057068 DOI: 10.1016/j.cmet.2018.07.001] [Citation(s) in RCA: 342] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 05/11/2018] [Accepted: 07/06/2018] [Indexed: 02/08/2023]
Abstract
The extent to which microbiota alterations define or influence the outcome of metabolic diseases is still unclear, but the byproducts of microbiota metabolism are known to have an important role in mediating the host-microbiota interaction. Here, we identify that in both pre-clinical and clinical settings, metabolic syndrome is associated with the reduced capacity of the microbiota to metabolize tryptophan into derivatives that are able to activate the aryl hydrocarbon receptor. This alteration is not merely an effect of the disease as supplementation with AhR agonist or a Lactobacillus strain, with a high AhR ligand-production capacity, leads to improvement of both dietary- and genetic-induced metabolic impairments, particularly glucose dysmetabolism and liver steatosis, through improvement of intestinal barrier function and secretion of the incretin hormone GLP-1. These results highlight the role of gut microbiota-derived metabolites as a biomarker and as a basis for novel preventative or therapeutic interventions for metabolic disorders.
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68
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Chhabra P, Spano AJ, Bowers D, Ren T, Moore DJ, Timko MP, Wu M, Brayman KL. Evidence for the Role of the Cecal Microbiome in Maintenance of Immune Regulation and Homeostasis. Ann Surg 2018; 268:541-549. [PMID: 29994931 DOI: 10.1097/sla.0000000000002930] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE (S) Our objective was to investigate alterations in the cecal microbial composition during the development of type 1 diabetes (T1D) with or without IgM therapy, and correlate these alterations with the corresponding immune profile. METHODS (1) Female nonobese diabetic (NOD) mice treated with IgM or saline (n = 20/group) were divided into 5-week-old nondiabetic; 9 to 12-week-old prehyperglycemic stage-1; ≥13-week-old prehyperglycemic stage-2; and diabetic groups. 16S rRNA libraries were prepared from bacterial DNA and deep-sequenced. (2) New-onset diabetic mice were treated with IgM (200 μg on Days 1, 3, and 5) and their blood glucose monitored for 2 months. RESULTS Significant dysbiosis was observed in the cecal microbiome with the progression of T1D development. The alteration in microbiome composition was characterized by an increase in the bacteroidetes:firmicutes ratio. In contrast, IgM conserved normal bacteroidetes:firmicutes ratio and this effect was long-lasting. Furthermore, oral gavage using cecal content from IgM-treated mice significantly diminished the incidence of diabetes compared with controls, indicating that IgM specifically affected mucosa-associated microbes, and that the affect was causal and not an epiphenomenon. Also, regulatory immune cell populations (myeloid-derived suppressor cells and regulatory T cells) were expanded and insulin autoantibody production diminished in the IgM-treated mice. In addition, IgM therapy reversed hyperglycemia in 70% of new-onset diabetic mice (n = 10) and the mice remained normoglycemic for the entire post-treatment observation period. CONCLUSIONS The cecal microbiome appears to be important in maintaining immune homeostasis and normal immune responses.
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Affiliation(s)
- Preeti Chhabra
- Department of Surgery, University of Virginia, Charlottesville, VA
| | - Anthony J Spano
- Department of Biology, University of Virginia, Charlottesville, VA
| | - Daniel Bowers
- Department of Surgery, University of Virginia, Charlottesville, VA
| | - Tiantian Ren
- Department of Biology, University of Virginia, Charlottesville, VA
| | - Daniel J Moore
- Department of Pediatrics, Vanderbilt University, Nashville, TN
| | - Michael P Timko
- Department of Biology, University of Virginia, Charlottesville, VA
| | - Martin Wu
- Department of Biology, University of Virginia, Charlottesville, VA
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Shtriker MG, Peri I, Taieb E, Nyska A, Tirosh O, Madar Z. Galactomannan More than Pectin Exacerbates Liver Injury in Mice Fed with High-Fat, High-Cholesterol Diet. Mol Nutr Food Res 2018; 62:e1800331. [DOI: 10.1002/mnfr.201800331] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/15/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Miriam G. Shtriker
- Institute of Biochemistry; Food Science and Nutrition; Robert H. Smith Faculty of Agriculture; Food and Environment; The Hebrew University of Jerusalem; Rehovot 76100 Israel
| | - Irena Peri
- Institute of Biochemistry; Food Science and Nutrition; Robert H. Smith Faculty of Agriculture; Food and Environment; The Hebrew University of Jerusalem; Rehovot 76100 Israel
| | - Elise Taieb
- Institute of Biochemistry; Food Science and Nutrition; Robert H. Smith Faculty of Agriculture; Food and Environment; The Hebrew University of Jerusalem; Rehovot 76100 Israel
| | - Abraham Nyska
- Sackler School of Medicine; Tel Aviv University, and Consultant in Toxicologic Pathology; Timrat 36576 Israel
| | - Oren Tirosh
- Institute of Biochemistry; Food Science and Nutrition; Robert H. Smith Faculty of Agriculture; Food and Environment; The Hebrew University of Jerusalem; Rehovot 76100 Israel
| | - Zecharia Madar
- Institute of Biochemistry; Food Science and Nutrition; Robert H. Smith Faculty of Agriculture; Food and Environment; The Hebrew University of Jerusalem; Rehovot 76100 Israel
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70
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Meidan E, Kolesnikov Y, Tirosh O. High Fat Diets Composed of Palm Stearin and Olive Oil Equally Exacerbate Liver Inflammatory Damage and Metabolic Stress in Mice. Mol Nutr Food Res 2018; 62:e1700915. [PMID: 29733507 DOI: 10.1002/mnfr.201700915] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 04/22/2018] [Indexed: 12/15/2022]
Abstract
SCOPE People with fatty liver could be subject to acute infections such as sepsis. The aim of the study is to evaluate the effect of high fat diets (HFD) of olive oil and palm stearin on liver inflammation induced by lipopolysaccharides (LPS). METHODS AND RESULTS C57BL/6J male mice were treated with high fat diets with different sources of oils: palm stearin and olive oil for 8 weeks followed by LPS injection. The proinflammatory effect of olive oil was also studied using gavage treatment and IP injection of LPS. Animals fed with HFDs showed an increase in body weight, elevated blood glucose levels, and fatty liver phenotype. HFDs aggravated the effect of LPS treatment to induce inflammatory response compared to low fat diet (LFD) effect. Following HFD supplementation, LPS induced hyperinsulinemia, more liver damage than in animals that consumed LFD. In addition, both gavage and long-term feeding with high lipids in the presence of LPS resulted in inhibition of gluconeogenic genes expression. CONCLUSION HFDs of both monounsaturated and saturated fat potentiated liver inflammation induced by LPS treatment indicate that the total amount of fat consumed is the main proinflammatory factor rather than the type of fat.
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Affiliation(s)
- Elena Meidan
- Institute of Biochemistry, Food Science and Nutrition, Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Yula Kolesnikov
- Institute of Biochemistry, Food Science and Nutrition, Hebrew University of Jerusalem, Rehovot, 7610001, Israel
| | - Oren Tirosh
- Institute of Biochemistry, Food Science and Nutrition, Hebrew University of Jerusalem, Rehovot, 7610001, Israel
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Hoving LR, van der Zande HJP, Pronk A, Guigas B, Willems van Dijk K, van Harmelen V. Dietary yeast-derived mannan oligosaccharides have immune-modulatory properties but do not improve high fat diet-induced obesity and glucose intolerance. PLoS One 2018; 13:e0196165. [PMID: 29723205 PMCID: PMC5933760 DOI: 10.1371/journal.pone.0196165] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 04/06/2018] [Indexed: 12/13/2022] Open
Abstract
The indigestible mannan oligosaccharides (MOS) derived from the outer cell wall of yeast Saccharomyces cerevisiae have shown potential to reduce inflammation. Since inflammation is one of the underlying mechanisms involved in the development of obesity-associated metabolic dysfunctions, we aimed to determine the effect of dietary supplementation with MOS on inflammation and metabolic homeostasis in lean and diet-induced obese mice. Male C57BL/6 mice were fed either a low fat diet (LFD) or a high fat diet (HFD) with, respectively, 10% or 45% energy derived from lard fat, with or without 1% MOS for 17 weeks. Body weight and composition were measured throughout the study. After 12 weeks of intervention, whole-body glucose tolerance was assessed and in week 17 immune cell composition was determined in mesenteric white adipose tissue (mWAT) and liver by flow cytometry and RT-qPCR. In LFD-fed mice, MOS supplementation induced a significant increase in the abundance of macrophages and eosinophils in mWAT. A similar trend was observed in hepatic macrophages. Although HFD feeding induced a classical shift from the anti-inflammatory M2-like macrophages towards the pro-inflammatory M1-like macrophages in both mWAT and liver from control mice, MOS supplementation had no effect on this obesity-driven immune response. Finally, MOS supplementation did not improve whole-body glucose homeostasis in both lean and obese mice.Altogether, our data showed that MOS had extra-intestinal immune modulatory properties in mWAT and liver. However these effects were not substantial enough to significantly ameliorate HFD-induced glucose intolerance or inflammation.
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Affiliation(s)
- Lisa R. Hoving
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
- * E-mail:
| | | | - Amanda Pronk
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Bruno Guigas
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
- Department of Molecular Cell Biology, Leiden University Medical Center, Leiden, The Netherlands
| | - Ko Willems van Dijk
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
- Department of Medicine, division Endocrinology, Leiden University Medical Center, Leiden, The Netherlands
| | - Vanessa van Harmelen
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
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72
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Jiao N, Baker SS, Nugent CA, Tsompana M, Cai L, Wang Y, Buck MJ, Genco RJ, Baker RD, Zhu R, Zhu L. Gut microbiome may contribute to insulin resistance and systemic inflammation in obese rodents: a meta-analysis. Physiol Genomics 2018; 50:244-254. [PMID: 29373083 DOI: 10.1152/physiolgenomics.00114.2017] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A number of studies have associated obesity with altered gut microbiota, although results are discordant regarding compositional changes in the gut microbiota of obese animals. Herein we used a meta-analysis to obtain an unbiased evaluation of structural and functional changes of the gut microbiota in diet-induced obese rodents. The raw sequencing data of nine studies generated from high-fat diet (HFD)-induced obese rodent models were processed with QIIME to obtain gut microbiota compositions. Biological functions were predicted and annotated with KEGG pathways with PICRUSt. No significant difference was observed for alpha diversity and Bacteroidetes-to-Firmicutes ratio between obese and lean rodents. Bacteroidia, Clostridia, Bacilli, and Erysipelotrichi were dominant classes, but gut microbiota compositions varied among studies. Meta-analysis of the nine microbiome data sets identified 15 differential taxa and 57 differential pathways between obese and lean rodents. In obese rodents, increased abundance was observed for Dorea, Oscillospira, and Ruminococcus, known for fermenting polysaccharide into short chain fatty acids (SCFAs). Decreased Turicibacter and increased Lactococcus are consistent with elevated inflammation in the obese status. Differential functional pathways of the gut microbiome in obese rodents included enriched pyruvate metabolism, butanoate metabolism, propanoate metabolism, pentose phosphate pathway, fatty acid biosynthesis, and glycerolipid metabolism pathways. These pathways converge in the function of carbohydrate metabolism, SCFA metabolism, and biosynthesis of lipid. HFD-induced obesity results in structural and functional dysbiosis of gut microbiota. The altered gut microbiome may contribute to obesity development by promoting insulin resistance and systemic inflammation.
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Affiliation(s)
- Na Jiao
- Department of Gastroenterology, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University , Shanghai , People's Republic of China
| | - Susan S Baker
- Digestive Diseases and Nutrition Center, Department of Pediatrics, The State University of New York at Buffalo , Buffalo, New York.,Genome, Environment and Microbiome Community of Excellence, The State University of New York at Buffalo , Buffalo, New York
| | - Colleen A Nugent
- Digestive Diseases and Nutrition Center, Department of Pediatrics, The State University of New York at Buffalo , Buffalo, New York
| | - Maria Tsompana
- Center of Excellence in Bioinformatics and Life Sciences, the State University of New York at Buffalo , Buffalo, New York
| | - Liting Cai
- Department of Gastroenterology, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University , Shanghai , People's Republic of China
| | - Yong Wang
- Basic Medical College, Beijing University of Chinese Medicine , Beijing , People's Republic of China
| | - Michael J Buck
- Genome, Environment and Microbiome Community of Excellence, The State University of New York at Buffalo , Buffalo, New York.,Center of Excellence in Bioinformatics and Life Sciences, the State University of New York at Buffalo , Buffalo, New York
| | - Robert J Genco
- Genome, Environment and Microbiome Community of Excellence, The State University of New York at Buffalo , Buffalo, New York.,Departments of Oral Biology, Microbiology, and Immunology, The State University of New York at Buffalo , Buffalo, New York
| | - Robert D Baker
- Digestive Diseases and Nutrition Center, Department of Pediatrics, The State University of New York at Buffalo , Buffalo, New York
| | - Ruixin Zhu
- Department of Gastroenterology, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University , Shanghai , People's Republic of China
| | - Lixin Zhu
- Digestive Diseases and Nutrition Center, Department of Pediatrics, The State University of New York at Buffalo , Buffalo, New York.,Genome, Environment and Microbiome Community of Excellence, The State University of New York at Buffalo , Buffalo, New York
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73
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Lee YS, Wollam J, Olefsky JM. An Integrated View of Immunometabolism. Cell 2018; 172:22-40. [PMID: 29328913 PMCID: PMC8451723 DOI: 10.1016/j.cell.2017.12.025] [Citation(s) in RCA: 290] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 10/17/2017] [Accepted: 12/18/2017] [Indexed: 02/07/2023]
Abstract
The worldwide obesity epidemic has emerged as a major cause of insulin resistance and Type 2 diabetes. Chronic tissue inflammation is a well-recognized feature of obesity, and the field of immunometabolism has witnessed many advances in recent years. Here, we review the major features of our current understanding with respect to chronic obesity-related inflammation in metabolic tissues and focus on how these inflammatory changes affect insulin sensitivity, insulin secretion, food intake, and glucose homeostasis. There is a growing appreciation of the varied and sometimes integrated crosstalk between cells within a tissue (intraorgan) and tissues within an organism (interorgan) that supports inflammation in the context of metabolic dysregulation. Understanding these pathways and modes of communication has implications for translational studies. We also briefly summarize the state of this field with respect to potential current and developing therapeutics.
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Affiliation(s)
- Yun Sok Lee
- Department of Medicine, Division of Endocrinology and Metabolism, University of California, San Diego, La Jolla, CA 92093, USA; Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
| | - Joshua Wollam
- Department of Medicine, Division of Endocrinology and Metabolism, University of California, San Diego, La Jolla, CA 92093, USA
| | - Jerrold M Olefsky
- Department of Medicine, Division of Endocrinology and Metabolism, University of California, San Diego, La Jolla, CA 92093, USA.
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74
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Chan KL, Tam TH, Boroumand P, Prescott D, Costford SR, Escalante NK, Fine N, Tu Y, Robertson SJ, Prabaharan D, Liu Z, Bilan PJ, Salter MW, Glogauer M, Girardin SE, Philpott DJ, Klip A. Circulating NOD1 Activators and Hematopoietic NOD1 Contribute to Metabolic Inflammation and Insulin Resistance. Cell Rep 2017; 18:2415-2426. [PMID: 28273456 DOI: 10.1016/j.celrep.2017.02.027] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 12/09/2016] [Accepted: 02/07/2017] [Indexed: 12/19/2022] Open
Abstract
Insulin resistance is a chronic inflammatory condition accompanying obesity or high fat diets that leads to type 2 diabetes. It is hypothesized that lipids and gut bacterial compounds in particular contribute to metabolic inflammation by activating the immune system; however, the receptors detecting these "instigators" of inflammation remain largely undefined. Here, we show that circulating activators of NOD1, a receptor for bacterial peptidoglycan, increase with high fat feeding in mice, suggesting that NOD1 could be a critical sensor leading to metabolic inflammation. Hematopoietic depletion of NOD1 did not prevent weight gain but protected chimeric mice against diet-induced glucose and insulin intolerance. Mechanistically, while macrophage infiltration of adipose tissue persisted, notably these cells were less pro-inflammatory, had lower CXCL1 production, and consequently, lower neutrophil chemoattraction into the tissue. These findings reveal macrophage NOD1 as a cell-specific target to combat diet-induced inflammation past the step of macrophage infiltration, leading to insulin resistance.
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Affiliation(s)
- Kenny L Chan
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada; Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Theresa H Tam
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
| | - Parastoo Boroumand
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada; Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - David Prescott
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Sheila R Costford
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Nichole K Escalante
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Noah Fine
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Toronto, Ontario M5S 3E2, Canada
| | - YuShan Tu
- Neurosciences and Mental Health Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
| | - Susan J Robertson
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Dilshaayee Prabaharan
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
| | - Zhi Liu
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
| | - Philip J Bilan
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
| | - Michael W Salter
- Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada; Neurosciences and Mental Health Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada
| | - Michael Glogauer
- Matrix Dynamics Group, Faculty of Dentistry, University of Toronto, Toronto, Ontario M5S 3E2, Canada
| | - Stephen E Girardin
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Dana J Philpott
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Amira Klip
- Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada; Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada; Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada.
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75
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Saetang J, Sangkhathat S. Role of innate lymphoid cells in obesity and metabolic disease (Review). Mol Med Rep 2017; 17:1403-1412. [PMID: 29138853 PMCID: PMC5780078 DOI: 10.3892/mmr.2017.8038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 08/14/2017] [Indexed: 12/18/2022] Open
Abstract
The immune system has previously been demonstrated to be associated with the pathophysiological development of metabolic abnormalities. However, the mechanisms linking immunity to metabolic disease remain to be fully elucidated. It has previously been suggested that innate lymphoid cells (ILCs) may be involved in the progression of numerous types of metabolic diseases as these cells act as suppressors and promoters for obesity and associated conditions, and are particularly involved in adipose tissue inflammation, which is a major feature of metabolic imbalance. Group 2 ILCs (ILC2s) have been revealed as anti‑obese immune regulators by secreting anti‑inflammatory cytokines and promoting the polarization of M2 macrophages, whereas group 1 ILCs (ILC1s), including natural killer cells, may promote adipose tissue inflammation via production of interferon‑γ, which in turn polarizes macrophages toward the M1 type. The majority of studies to date have demonstrated the pathological association between ILCs and obesity in the context of adipose tissue inflammation, whereas the roles of ILCs in other organs which participate in obesity development have not been fully characterized. Therefore, identifying the roles of all types of ILCs as central components mediating obesity‑associated inflammation, is of primary concern, and may lead to the discovery of novel preventative and therapeutic interventions.
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Affiliation(s)
- Jirakrit Saetang
- Department of Biomedical Sciences, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand
| | - Surasak Sangkhathat
- Tumor Biology Research Unit, Department of Surgery, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand
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76
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Spiljar M, Merkler D, Trajkovski M. The Immune System Bridges the Gut Microbiota with Systemic Energy Homeostasis: Focus on TLRs, Mucosal Barrier, and SCFAs. Front Immunol 2017; 8:1353. [PMID: 29163467 PMCID: PMC5670327 DOI: 10.3389/fimmu.2017.01353] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 10/03/2017] [Indexed: 12/17/2022] Open
Abstract
The gut microbiota is essential for the development and regulation of the immune system and the metabolism of the host. Germ-free animals have altered immunity with increased susceptibility to immunologic diseases and show metabolic alterations. Here, we focus on two of the major immune-mediated microbiota-influenced components that signal far beyond their local environment. First, the activation or suppression of the toll-like receptors (TLRs) by microbial signals can dictate the tone of the immune response, and they are implicated in regulation of the energy homeostasis. Second, we discuss the intestinal mucosal surface is an immunologic component that protects the host from pathogenic invasion, is tightly regulated with regard to its permeability and can influence the systemic energy balance. The short chain fatty acids are a group of molecules that can both modulate the intestinal barrier and escape the gut to influence systemic health. As modulators of the immune response, the microbiota-derived signals influence functions of distant organs and can change susceptibility to metabolic diseases.
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Affiliation(s)
- Martina Spiljar
- Faculty of Medicine, Department of Cell Physiology and Metabolism, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland.,Diabetes Center, Faculty of Medicine, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland
| | - Doron Merkler
- Faculty of Medicine, Department of Pathology and Immunology, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland
| | - Mirko Trajkovski
- Faculty of Medicine, Department of Cell Physiology and Metabolism, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland.,Diabetes Center, Faculty of Medicine, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland.,Institute of Genetics and Genomics in Geneva (iGE3), University of Geneva, Geneva, Switzerland
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77
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Gartner JG, Durston MM, Booth SA, Ellison CA. Systemic Treatment with a miR-146a Mimic Suppresses Endotoxin Sensitivity and Partially Protects Mice from the Progression of Acute Graft-versus-Host Disease. Scand J Immunol 2017; 86:368-376. [PMID: 28853768 DOI: 10.1111/sji.12597] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 08/21/2017] [Indexed: 11/30/2022]
Abstract
Acute GVHD (aGVHD) is driven by interactions between the allogenic T cell response, inflammation, tissue injury and microbial products that enter the circulation when protective barriers such as the intestinal epithelium become compromised. Mice with aGVHD become hypersensitive to LPS, secreting large quantities of inflammatory mediators that exacerbate tissue injury. We hypothesized that microRNA (miR) modulators could be used in vivo to mitigate LPS hypersensitivity, altering the course of aGVHD. Using the C57BL/6 → (C57BL/6 × DBA/2)F1 -hybrid model of aGVHD, we measured intestinal permeability over time and used a qPCR array to detect concomitant changes in the expression levels of certain microRNAs (miRs) in the intestine. Large increases in permeability were seen on day 15, when endotoxemia becomes detectable and GVHD-associated histopathological lesions develop. Amongst the miRs with altered expression levels were some that regulate sensitivity to endotoxin. We chose to focus on miR-146a and treated recipient mice systemically with a miR-146a mimic early in the GVH reaction. This led to a reduction in the burst of IFNγ that likely plays a priming role in the mechanism underlying heightened sensitivity to endotoxin. LPS-induced TNFα release and GVHD-associated weight loss were also diminished and survival was prolonged. In summary, systemic treatment with a miR-146a mimic dampens the heightened sensitivity to LPS that occurs concomitantly with increased intestinal permeability and provides partial protection from the progression of acute GVHD.
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Affiliation(s)
- J G Gartner
- Department of Pathology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.,Department of Immunology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - M M Durston
- Department of Pathology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - S A Booth
- Molecular PathoBiology, National Microbiology Laboratory, Canadian Science Centre for Human and Animal Health, Public Health Agency of Canada, Winnipeg, MB, Canada.,Department of Medical Microbiology and Infectious Diseases, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
| | - C A Ellison
- Department of Pathology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada.,Department of Immunology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, Canada
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78
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Hepatic Immune Microenvironment in Alcoholic and Nonalcoholic Liver Disease. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6862439. [PMID: 28852648 PMCID: PMC5567444 DOI: 10.1155/2017/6862439] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 07/06/2017] [Indexed: 01/18/2023]
Abstract
Many types of innate (natural killer cells, natural killer T cells, and Kupffer cells/macrophages) and adaptive (T cells and B cells) immune cells are enriched within the liver and function in liver physiology and pathology. Liver pathology is generally induced by two types of immunologic insults: failure to eliminate antigens derived from the gastrointestinal tract which are important for host defense and an impaired tissue protective tolerance mechanism that helps reduce the negative outcomes of immunopathology. Accumulating evidence from the last several decades suggests that hepatic immune cells play an important role in the pathogenesis of alcoholic and nonalcoholic liver injury and inflammation in humans and mice. Here, we focus on the roles of innate and adaptive immune cells in the development and maintenance of alcoholic liver disease and nonalcoholic fatty liver disease/nonalcoholic steatohepatitis. Additionally, the pathogenesis of liver disease and new therapeutic targets for preventing and treating alcoholic liver disease and nonalcoholic fatty liver disease/nonalcoholic steatohepatitis are discussed.
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79
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Guerville M, Leroy A, Sinquin A, Laugerette F, Michalski MC, Boudry G. Western-diet consumption induces alteration of barrier function mechanisms in the ileum that correlates with metabolic endotoxemia in rats. Am J Physiol Endocrinol Metab 2017; 313:E107-E120. [PMID: 28400412 DOI: 10.1152/ajpendo.00372.2016] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 04/03/2017] [Accepted: 04/04/2017] [Indexed: 12/11/2022]
Abstract
Obesity and its related disorders have been associated with the presence in the blood of gut bacteria-derived lipopolysaccharides (LPS). However, the factors underlying this low-grade elevation in plasma LPS, so-called metabolic endotoxemia, are not fully elucidated. We aimed to investigate the effects of Western diet (WD) feeding on intestinal and hepatic LPS handling mechanisms in a rat model of diet-induced obesity (DIO). Rats were fed either a standard chow diet (C) or a Western Diet (WD, 45% fat) for 6 wk. They were either fed ad libitum or pair-fed to match the caloric intake of C rats for the first week, then fed ad libitum for the remaining 5 wk. Six-week WD feeding led to a mild obese phenotype with increased adiposity and elevated serum LPS-binding protein (LBP) levels relative to C rats, irrespective of initial energy intake. Serum LPS was not different between dietary groups but exhibited strong variability. Disrupted ileal mucus secretion and decreased ileal Reg3-γ and -β gene expression along with high ileal permeability to LPS were observed in WD compared with C-fed rats. Ileal and cecal intestinal alkaline phosphatase (IAP) activity as well as Verrucomicrobia and Bifidobacterium cecal levels were increased in WD-fed rats compared with C-fed rats. WD consumption did not impact mRNA levels of LPS-handling hepatic enzymes. Correlation analysis revealed that ileal passage of LPS, IAP activity, Proteobacteria levels and hepatic aoah gene expression correlated with serum LPS and LBP, suggesting that ileal mucosal defense impairment induced by WD feeding contribute to metabolic endotoxemia.
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Affiliation(s)
- Mathilde Guerville
- Institut Numecan INRA INSERM Université de Rennes 1, Saint-Gilles, France; and
| | - Anaïs Leroy
- Institut Numecan INRA INSERM Université de Rennes 1, Saint-Gilles, France; and
| | - Annaëlle Sinquin
- Institut Numecan INRA INSERM Université de Rennes 1, Saint-Gilles, France; and
| | - Fabienne Laugerette
- Univ-Lyon, CarMeN Laboratory, INRA U1397, Université Claude Bernard Lyon 1, Inserm U1060, INSA Lyon, Villeurbanne, France
| | - Marie-Caroline Michalski
- Univ-Lyon, CarMeN Laboratory, INRA U1397, Université Claude Bernard Lyon 1, Inserm U1060, INSA Lyon, Villeurbanne, France
| | - Gaëlle Boudry
- Institut Numecan INRA INSERM Université de Rennes 1, Saint-Gilles, France; and
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80
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Johnson AMF, Hou S, Li P. Inflammation and insulin resistance: New targets encourage new thinking: Galectin-3 and LTB 4 are pro-inflammatory molecules that can be targeted to restore insulin sensitivity. Bioessays 2017; 39. [PMID: 28752547 DOI: 10.1002/bies.201700036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Galectin-3 and LTB4 are pro-inflammatory molecules recently shown to directly cause insulin resistance in mouse and human cells. They are highly expressed in the obese state, and can be targeted both genetically and pharmacologically to improve insulin sensitivity in vivo. This expands on previous research showing that targeting inflammatory cytokines can be insulin sensitizing in animal models. However, translating these potential therapies into the human setting remains challenging. Here we review this latest research, and discuss how balancing their pleiotropic functions, the action of the microbiome, and the ability to identify relevant patient populations are vital considerations for successful anti-inflammatory insulin sensitizing therapy.
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Affiliation(s)
- Andrew M F Johnson
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, and Peking Union Medical College, Beijing, China.,Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Shaocong Hou
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, and Peking Union Medical College, Beijing, China.,Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
| | - Pingping Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, and Peking Union Medical College, Beijing, China.,Diabetes Research Center of Chinese Academy of Medical Sciences, Beijing, China
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81
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Matheus VA, Monteiro L, Oliveira RB, Maschio DA, Collares-Buzato CB. Butyrate reduces high-fat diet-induced metabolic alterations, hepatic steatosis and pancreatic beta cell and intestinal barrier dysfunctions in prediabetic mice. Exp Biol Med (Maywood) 2017; 242:1214-1226. [PMID: 28504618 DOI: 10.1177/1535370217708188] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
In this study, we investigated the effect of diet supplementation with sodium butyrate (5% w/w), a short-chain fatty acid produced by the intestinal microbiota, on metabolic parameters, body adiposity, hepatic and pancreatic lipid accumulation, beta cell function/mass as well as on the structure and function of the tight junction-mediated intestinal epithelial barrier in both normal and obese/prediabetic C57 mice fed a regular (control) or high-fat diet for 60 days, respectively. Butyrate treatment significantly inhibited all the high-fat-induced metabolic dysfunctions evaluated, i.e. significantly reduced the weight gain and body adiposity as well as the insulin resistant state, hyperglycemia and hyperinsulinemia, without changing food intake. In addition, high-fat-fed mice treated with this short-chain fatty acid displayed no compensatory hyperplasia of pancreatic beta cells nor marked hepatic steatosis as seen in prediabetic mice after high-fat diet only. Isolated pancreatic islets from high-fat-fed mice treated with butyrate showed improvement of the insulin secretion, which was associated with a significant decrease in lipid accumulation within the pancreas. Butyrate enhanced the intestinal epithelial barrier, as revealed by the FITC-Dextran permeability assay, which was accompanied by a significant increase in the junctional content of the tight junction-associated claudin-1 in intestinal epithelia of jejunum, ileum, and colon of both control and high-fat mice. In conclusion, our results showed that diet supplementation with butyrate inhibits the deleterious effects of high-fat diet intake on metabolic parameters and structure/function of several tissues/organs associated with type 2 diabetes mellitus in a mouse model, suggesting a potential use of this short-chain fatty acid in the treatment of this endocrine-metabolic disorder. Impact statement Butyrate is a short-chain fatty acid produced by the intestinal microbiota through the fermentation of non-absorbable carbohydrates and proteins (e.g. fibers). Sodium butyrate incorporated into the diet displayed a protective action on metabolic, hepatic, pancreatic and intestinal alterations induced by high-fat diet in mice, resulting in significant inhibition of the development of a prediabetic state. Thus, our data suggest that butyrate may have a potential therapeutic use in the treatment of type 2 diabetes and related disorders.
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Affiliation(s)
- V A Matheus
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, CEP 13083-970, Brazil
| | - Lcs Monteiro
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, CEP 13083-970, Brazil
| | - R B Oliveira
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, CEP 13083-970, Brazil
| | - D A Maschio
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, CEP 13083-970, Brazil
| | - C B Collares-Buzato
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, CEP 13083-970, Brazil
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82
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Abstract
How can we treat cancer more effectively? Traditionally, tumours from the same anatomical site are treated as one tumour entity. This concept has been challenged by recent breakthroughs in cancer genomics and translational research that have enabled molecular tumour profiling. The identification and validation of cancer drivers that are shared between different tumour types, spurred the new paradigm to target driver pathways across anatomical sites by off-label drug use, or within so-called basket or umbrella trials which are designed to test whether molecular alterations in one tumour entity can be extrapolated to all others. However, recent clinical and preclinical studies suggest that there are tissue- and cell type-specific differences in tumorigenesis and the organization of oncogenic signalling pathways. In this Opinion article, we focus on the molecular, cellular, systemic and environmental determinants of organ-specific tumorigenesis and the mechanisms of context-specific oncogenic signalling outputs. Investigation, recognition and in-depth biological understanding of these differences will be vital for the design of next-generation clinical trials and the implementation of molecularly guided cancer therapies in the future.
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Affiliation(s)
- Günter Schneider
- Department of Medicine II, Klinikum rechts der Isar, Technische Universität München, Ismaningerstr. 22, 81675 München, Germany
- German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Marc Schmidt-Supprian
- German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
- Department of Medicine III, Klinikum rechts der Isar, Technische Universität München, Ismaningerstr. 22, 81675 München, Germany
| | - Roland Rad
- Department of Medicine II, Klinikum rechts der Isar, Technische Universität München, Ismaningerstr. 22, 81675 München, Germany
- German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Dieter Saur
- Department of Medicine II, Klinikum rechts der Isar, Technische Universität München, Ismaningerstr. 22, 81675 München, Germany
- German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
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83
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Jia J, Li F, Zhai S, Zhou H, Liu S, Jiang G, Yan B. Susceptibility of Overweight Mice to Liver Injury as a Result of the ZnO Nanoparticle-Enhanced Liver Deposition of Pb 2. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:1775-1784. [PMID: 28068759 DOI: 10.1021/acs.est.6b05200] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The prevalence of the applications of nanomaterials in consumer products and water treatment facilities increases the chance that humans will be exposed to both nanoparticles and environmental pollutants such as heavy metals. Co-exposure to nanoparticles and heavy metals may adversely affect human health, especially in susceptible populations such as overweight subjects. To evaluate the impact of such co-exposures, we orally administered zinc oxide nanoparticles (ZNPs; 14 or 58 nm) and/or Pb(Ac)2 at tolerable doses to both healthy overweight and healthy normal weight mice. The ZNPs enhanced the deposition of Pb in all major organs in the overweight mice compared with that in the normal mice. As a result, higher levels of hepatic reactive oxygen species, pro-inflammatory cytokines, and liver injury were observed in the overweight mice but not in the normal weight mice. Our findings underscore a potentially enhanced risk of nanoparticle/heavy metal co-exposure in the susceptible overweight population.
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Affiliation(s)
- Jianbo Jia
- School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China
| | - Feifei Li
- School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China
| | - Shumei Zhai
- School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China
| | - Hongyu Zhou
- School of Environment, Jinan University , Guangzhou 510632, P. R. China
| | - Sijin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, P. R. China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, P. R. China
| | - Bing Yan
- School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, P. R. China
- School of Environment, Jinan University , Guangzhou 510632, P. R. China
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84
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Winer DA, Winer S, Dranse HJ, Lam TKT. Immunologic impact of the intestine in metabolic disease. J Clin Invest 2017; 127:33-42. [PMID: 28045403 DOI: 10.1172/jci88879] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Obesity and diabetes are associated with increased chronic low-grade inflammation and elevated plasma glucose levels. Although inflammation in the fat and liver are established features of obesity-associated insulin resistance, the intestine is emerging as a new site for immunologic changes that affect whole-body metabolism. Specifically, microbial and dietary factors incurred by diet-induced obesity influence underlying innate and adaptive responses of the intestinal immune system. These responses affect the maintenance of the intestinal barrier, systemic inflammation, and glucose metabolism. In this Review we propose that an understanding of the changes to the intestinal immune system, and how these changes influence systemic immunity and glucose metabolism in a whole-body integrative and a neuronal-dependent network, will unveil novel intestinal pathologic and therapeutic targets for diabetes and obesity.
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85
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Kawano Y, Nakae J, Watanabe N, Kikuchi T, Tateya S, Tamori Y, Kaneko M, Abe T, Onodera M, Itoh H. Colonic Pro-inflammatory Macrophages Cause Insulin Resistance in an Intestinal Ccl2/Ccr2-Dependent Manner. Cell Metab 2016; 24:295-310. [PMID: 27508875 DOI: 10.1016/j.cmet.2016.07.009] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 03/22/2016] [Accepted: 07/15/2016] [Indexed: 12/27/2022]
Abstract
High-fat diet (HFD) induces low-grade chronic inflammation and insulin resistance. However, little is known about the mechanism underlying HFD-induced chronic inflammation in peripheral insulin-responsive tissues. Here, we show that colonic pro-inflammatory macrophages regulate insulin sensitivity under HFD conditions. To investigate the pathophysiological role of colonic macrophages, we generated macrophage-specific chemokine (C-C Motif) receptor 2 (Ccr2) knockout (M-Ccr2KO) and intestinal epithelial cell-specific tamoxifen-inducible Ccl2 knockout (Vil-Ccl2KO) mice. Both strains exhibited similar body weight to control under HFD. However, they exhibited decreased infiltration of colonic pro-inflammatory macrophages, decreased intestinal permeability, and inactivation of the colonic inflammasome. Interestingly, they showed significantly improved glucose tolerance and insulin sensitivity with decreased chronic inflammation of adipose tissue. Therefore, inhibition of pro-inflammatory macrophage infiltration prevents HFD-induced insulin resistance and could be a novel therapeutic approach for type 2 diabetes.
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Affiliation(s)
- Yoshinaga Kawano
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Jun Nakae
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan.
| | - Nobuyuki Watanabe
- Department of Human Genetics, National Center for Child Health and Development, Tokyo 157-0074, Japan
| | - Tetsuhiro Kikuchi
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Sanshiro Tateya
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Yoshikazu Tamori
- Division of Diabetes and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; Department of Endocrinology and Metabolism, Chibune General Hospital, Osaka 555-0011, Japan
| | - Mari Kaneko
- Animal Resource Development Unit, Division of Bio-Function Dynamics Imaging, RIKEN Center for Life Science Technologies, Kobe 650-0047, Japan; Genetic Engineering Team, Division of Bio-Function Dynamics Imaging, RIKEN Center for Life Science Technologies, Kobe 650-0047, Japan
| | - Takaya Abe
- Genetic Engineering Team, Division of Bio-Function Dynamics Imaging, RIKEN Center for Life Science Technologies, Kobe 650-0047, Japan
| | - Masafumi Onodera
- Department of Human Genetics, National Center for Child Health and Development, Tokyo 157-0074, Japan
| | - Hiroshi Itoh
- Division of Endocrinology, Metabolism, and Nephrology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan
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Glucose and Palmitate Differentially Regulate PFKFB3/iPFK2 and Inflammatory Responses in Mouse Intestinal Epithelial Cells. Sci Rep 2016; 6:28963. [PMID: 27387960 PMCID: PMC4937440 DOI: 10.1038/srep28963] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 06/07/2016] [Indexed: 12/21/2022] Open
Abstract
The gene PFKFB3 encodes for inducible 6-phosphofructo-2-kinase, a glycolysis-regulatory enzyme that protects against diet-induced intestine inflammation. However, it is unclear how nutrient overload regulates PFKFB3 expression and inflammatory responses in intestinal epithelial cells (IECs). In the present study, primary IECs were isolated from small intestine of C57BL/6J mice fed a low-fat diet (LFD) or high-fat diet (HFD) for 12 weeks. Additionally, CMT-93 cells, a cell line for IECs, were cultured in low glucose (LG, 5.5 mmol/L) or high glucose (HG, 27.5 mmol/L) medium and treated with palmitate (50 μmol/L) or bovine serum albumin (BSA) for 24 hr. These cells were analyzed for PFKFB3 and inflammatory markers. Compared with LFD, HFD feeding decreased IEC PFKFB3 expression and increased IEC proinflammatory responses. In CMT-93 cells, HG significantly increased PFKFB3 expression and proinflammatory responses compared with LG. Interestingly, palmitate decreased PFKFB3 expression and increased proinflammatory responses compared with BSA, regardless of glucose concentrations. Furthermore, HG significantly increased PFKFB3 promoter transcription activity compared with LG. Upon PFKFB3 overexpression, proinflammatory responses in CMT-93 cells were decreased. Taken together, these results indicate that in IECs glucose stimulates PFKFB3 expression and palmitate contributes to increased proinflammatory responses. Therefore, PFKFB3 regulates IEC inflammatory status in response to macronutrients.
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87
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Park MY, Kim MY, Seo YR, Kim JS, Sung MK. High-fat Diet Accelerates Intestinal Tumorigenesis Through Disrupting Intestinal Cell Membrane Integrity. J Cancer Prev 2016; 21:95-103. [PMID: 27390738 PMCID: PMC4933433 DOI: 10.15430/jcp.2016.21.2.95] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 06/16/2016] [Accepted: 06/16/2016] [Indexed: 01/29/2023] Open
Abstract
Background: Excess energy supply induces chronic low-grade inflammation in association with oxidative stress in various tissues including intestinal epithelium. The objective of this study was to investigate the effect of high-fat diet (HFD) on intestinal cell membrane integrity and intestinal tumorigenesis in ApcMin/+ mice. Methods: Mice were fed with either normal diet (ND) or HFD for 12 weeks. The number of intestinal tumors were counted and biomarkers of endotoxemia, oxidative stress, and inflammation were determined. Changes in intestinal integrity was measured by fluorescein isothiocyanate (FITC)-dextran penetration and membrane gap junction protein expression. Results: HFD group had significantly higher number of tumors compared to ND group (P < 0.05). Blood total antioxidant capacity was lower in HFD group, while colonic 8-hydroxy-2′-deoxyguanosine level, a marker of oxidative damage, was higher in HFD group compared to that of ND group (P < 0.05). The penetration of FITC-dextran was substantially increased in HFD group (P < 0.05) while the expressions of membrane gap junction proteins including zonula occludens-1, claudin-1, and occludin were lower in HFD group (P < 0.05) compared to those in ND group. Serum concentration of lipopolysaccharide (LPS) receptor (CD14) and colonic toll-like receptor 4 (a LPS receptor) mRNA expression were significantly higher in HFD group than in ND group (P < 0.05), suggesting that significant endotoxemia may occur in HFD group due to the increased membrane permeability. Serum interleukin-6 concentration and myeloperoxidase activity were also higher in HFD group compared to those of ND group (P < 0.05). Conclusions: HFD increases oxidative stress disrupting intestinal gap junction proteins, thereby accelerating membrane permeability endotoxemia, inflammation, and intestinal tumorigenesis.
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Affiliation(s)
- Mi-Young Park
- Department of Food and Nutrition Education, Graduate School of Education, Soonchunhyang University, Asan, Daegu, Korea
| | - Min Young Kim
- Department of Food and Nutrition, Sookmyung Women's University, Daegu, Korea
| | - Young Rok Seo
- Department of Life Science, Institute of Environmental Medicine for Green Chemistry, Dongguk University, Seoul, Korea
| | - Jong-Sang Kim
- School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Korea
| | - Mi-Kyung Sung
- Department of Food and Nutrition, Sookmyung Women's University, Daegu, Korea
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88
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Genser L, Poitou C, Brot-Laroche É, Rousset M, Vaillant JC, Clément K, Thenet S, Leturque A. [Alteration of intestinal permeability: the missing link between gut microbiota modifications and inflammation in obesity?]. Med Sci (Paris) 2016; 32:461-469. [PMID: 27225918 DOI: 10.1051/medsci/20163205012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2023] Open
Abstract
The increasing incidence of obesity and associated metabolic complications is a worldwide public health issue. The role of the gut in the pathophysiology of obesity, with an important part for microbiota, is becoming obvious. In rodent models of diet-induced obesity, the modifications of gut microbiota are associated with an alteration of the intestinal permeability increasing the passage of food or bacterial antigens, which contribute to low-grade inflammation and insulin resistance. In human obesity, intestinal permeability modification, and its role in the crosstalk between gut microbiota changes and inflammation at systemic and tissular levels, are still poorly documented. Hence, further characterization of the triggering mechanisms of such inflammatory responses in obese subjects could enable the development of personalized intervention strategies that will help to reduce the risk of obesity-associated diseases.
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Affiliation(s)
- Laurent Genser
- Institut de cardiométabolisme et nutrition, ICAN, hôpital Pitié-Salpêtrière, F-75013, Paris, France - Sorbonne universités, université Paris 06, UMR-S 1166, Nutriomics Team, F-75013 Paris, France - Inserm, UMRS 1166, Nutriomics, F-75013 5Paris, France
| | - Christine Poitou
- Institut de cardiométabolisme et nutrition, ICAN, hôpital Pitié-Salpêtrière, F-75013, Paris, France - Sorbonne universités, université Paris 06, UMR-S 1166, Nutriomics Team, F-75013 Paris, France - Inserm, UMRS 1166, Nutriomics, F-75013 5Paris, France - Assistance-Publique Hôpitaux de Paris, groupe hospitalier Pitié-Salpêtrière, service de nutrition, 47-83, boulevard de l'Hôpital, F-75013 Paris, France
| | - Édith Brot-Laroche
- Institut de cardiométabolisme et nutrition, ICAN, hôpital Pitié-Salpêtrière, F-75013, Paris, France - Centre de recherche des Cordeliers, Inserm, UMPC université Paris 6, université Paris Descartes Paris 5, CNRS, EPHE laboratoire de pharmacologie cellulaire et moléculaire, 75006 Paris, France
| | - Monique Rousset
- Institut de cardiométabolisme et nutrition, ICAN, hôpital Pitié-Salpêtrière, F-75013, Paris, France - Centre de recherche des Cordeliers, Inserm, UMPC université Paris 6, université Paris Descartes Paris 5, CNRS, EPHE laboratoire de pharmacologie cellulaire et moléculaire, 75006 Paris, France
| | - Jean-Christophe Vaillant
- Assistance-Publique Hôpitaux de Paris, groupe hospitalier Pitié-Salpêtrière, service de chirurgie digestive, hépato-bilio-pancréatique, transplantation hépatique, F-75013 Paris, France
| | - Karine Clément
- Institut de cardiométabolisme et nutrition, ICAN, hôpital Pitié-Salpêtrière, F-75013, Paris, France - Sorbonne universités, université Paris 06, UMR-S 1166, Nutriomics Team, F-75013 Paris, France - Inserm, UMRS 1166, Nutriomics, F-75013 5Paris, France - Assistance-Publique Hôpitaux de Paris, groupe hospitalier Pitié-Salpêtrière, service de nutrition, 47-83, boulevard de l'Hôpital, F-75013 Paris, France
| | - Sophie Thenet
- Institut de cardiométabolisme et nutrition, ICAN, hôpital Pitié-Salpêtrière, F-75013, Paris, France - Centre de recherche des Cordeliers, Inserm, UMPC université Paris 6, université Paris Descartes Paris 5, CNRS, EPHE laboratoire de pharmacologie cellulaire et moléculaire, 75006 Paris, France
| | - Armelle Leturque
- Institut de cardiométabolisme et nutrition, ICAN, hôpital Pitié-Salpêtrière, F-75013, Paris, France - Centre de recherche des Cordeliers, Inserm, UMPC université Paris 6, université Paris Descartes Paris 5, CNRS, EPHE laboratoire de pharmacologie cellulaire et moléculaire, 75006 Paris, France
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89
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Abstract
Obesity and insulin resistance are associated with chronic inflammation in metabolic tissues such as adipose tissue and the liver. Recently, growing evidence has implicated the intestinal immune system as an important contributor to metabolic disease. Obesity predisposes to altered intestinal immunity and is associated with changes to the gut microbiota, intestinal barrier function, gut-residing innate and adaptive immune cells, and oral tolerance to luminal antigens. Accordingly, the gut immune system may represent a novel therapeutic target for systemic inflammation in insulin resistance. This review discusses the emerging field of intestinal immunity in obesity-related insulin resistance and how it affects metabolic disease.
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Affiliation(s)
- Daniel A Winer
- Diabetes Research Group, Division of Cellular and Molecular Biology, Toronto General Research Institute, University Health Network, 101 College Street, Toronto, ON M5G 1L7, Canada; Department of Immunology, University of Toronto, 1 King's College Circle, Toronto, ON M5S 1A8, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, Toronto, ON M5S 1A8, Canada; Department of Pathology, University Health Network, 200 Elizabeth Street, Toronto, ON M5G 2C4, Canada.
| | - Helen Luck
- Diabetes Research Group, Division of Cellular and Molecular Biology, Toronto General Research Institute, University Health Network, 101 College Street, Toronto, ON M5G 1L7, Canada; Department of Immunology, University of Toronto, 1 King's College Circle, Toronto, ON M5S 1A8, Canada
| | - Sue Tsai
- Diabetes Research Group, Division of Cellular and Molecular Biology, Toronto General Research Institute, University Health Network, 101 College Street, Toronto, ON M5G 1L7, Canada
| | - Shawn Winer
- Diabetes Research Group, Division of Cellular and Molecular Biology, Toronto General Research Institute, University Health Network, 101 College Street, Toronto, ON M5G 1L7, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, Toronto, ON M5S 1A8, Canada; Department of Laboratory Medicine, St. Michael's Hospital, 30 Bond Street, Toronto, ON M5B 1W8, Canada.
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90
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Beyaz S, Mana MD, Roper J, Kedrin D, Saadatpour A, Hong SJ, Bauer-Rowe KE, Xifaras ME, Akkad A, Arias E, Pinello L, Katz Y, Shinagare S, Abu-Remaileh M, Mihaylova MM, Lamming DW, Dogum R, Guo G, Bell GW, Selig M, Nielsen GP, Gupta N, Ferrone CR, Deshpande V, Yuan GC, Orkin SH, Sabatini DM, Yilmaz ÖH. High-fat diet enhances stemness and tumorigenicity of intestinal progenitors. Nature 2016; 531:53-8. [PMID: 26935695 PMCID: PMC4846772 DOI: 10.1038/nature17173] [Citation(s) in RCA: 529] [Impact Index Per Article: 66.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 01/28/2016] [Indexed: 12/27/2022]
Abstract
Little is known about how pro-obesity diets regulate tissue stem and progenitor cell function. Here we show that high-fat diet (HFD)-induced obesity augments the numbers and function of Lgr5(+) intestinal stem cells of the mammalian intestine. Mechanistically, a HFD induces a robust peroxisome proliferator-activated receptor delta (PPAR-δ) signature in intestinal stem cells and progenitor cells (non-intestinal stem cells), and pharmacological activation of PPAR-δ recapitulates the effects of a HFD on these cells. Like a HFD, ex vivo treatment of intestinal organoid cultures with fatty acid constituents of the HFD enhances the self-renewal potential of these organoid bodies in a PPAR-δ-dependent manner. Notably, HFD- and agonist-activated PPAR-δ signalling endow organoid-initiating capacity to progenitors, and enforced PPAR-δ signalling permits these progenitors to form in vivo tumours after loss of the tumour suppressor Apc. These findings highlight how diet-modulated PPAR-δ activation alters not only the function of intestinal stem and progenitor cells, but also their capacity to initiate tumours.
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Affiliation(s)
- Semir Beyaz
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
- Division of Hematology/Oncology, Boston Children's Hospital and Department of Pediatric Oncology, Dana-Farber Cancer Institute, Howard Hughes Medical Institute, Harvard Stem Cell Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Miyeko D Mana
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
| | - Jatin Roper
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
- Division of Gastroenterology and Molecular Oncology Research Institute, Tufts Medical Center, Boston, Massachusetts 02111, USA
| | - Dmitriy Kedrin
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
- Departments of Pathology, Gastroenterology, and Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
| | - Assieh Saadatpour
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute and Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
| | - Sue-Jean Hong
- Whitehead Institute for Biomedical Research, Howard Hughes Medical Institute, Department of Biology, MIT, Cambridge, Massachusetts 02142, USA
| | - Khristian E Bauer-Rowe
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
| | - Michael E Xifaras
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
| | - Adam Akkad
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
| | - Erika Arias
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
| | - Luca Pinello
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute and Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
| | - Yarden Katz
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA
| | - Shweta Shinagare
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
| | - Monther Abu-Remaileh
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
- Whitehead Institute for Biomedical Research, Howard Hughes Medical Institute, Department of Biology, MIT, Cambridge, Massachusetts 02142, USA
| | - Maria M Mihaylova
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
- Whitehead Institute for Biomedical Research, Howard Hughes Medical Institute, Department of Biology, MIT, Cambridge, Massachusetts 02142, USA
| | - Dudley W Lamming
- Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA
| | - Rizkullah Dogum
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
| | - Guoji Guo
- Division of Hematology/Oncology, Boston Children's Hospital and Department of Pediatric Oncology, Dana-Farber Cancer Institute, Howard Hughes Medical Institute, Harvard Stem Cell Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - George W Bell
- Whitehead Institute for Biomedical Research, Howard Hughes Medical Institute, Department of Biology, MIT, Cambridge, Massachusetts 02142, USA
| | - Martin Selig
- Departments of Pathology, Gastroenterology, and Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
| | - G Petur Nielsen
- Departments of Pathology, Gastroenterology, and Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
| | - Nitin Gupta
- Division of Digestive Diseases, University of Mississippi Medical Center, Jackson, Missisippi 39216, USA
| | - Cristina R Ferrone
- Departments of Pathology, Gastroenterology, and Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
| | - Vikram Deshpande
- Departments of Pathology, Gastroenterology, and Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
| | - Guo-Cheng Yuan
- Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute and Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
| | - Stuart H Orkin
- Division of Hematology/Oncology, Boston Children's Hospital and Department of Pediatric Oncology, Dana-Farber Cancer Institute, Howard Hughes Medical Institute, Harvard Stem Cell Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - David M Sabatini
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
- Whitehead Institute for Biomedical Research, Howard Hughes Medical Institute, Department of Biology, MIT, Cambridge, Massachusetts 02142, USA
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA
| | - Ömer H Yilmaz
- The David H. Koch Institute for Integrative Cancer Research at MIT, Department of Biology, MIT, Cambridge, Massachusetts 02139, USA
- Departments of Pathology, Gastroenterology, and Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114, USA
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA
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91
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Cavallari JF, Denou E, Foley KP, Khan WI, Schertzer JD. Different Th17 immunity in gut, liver, and adipose tissues during obesity: the role of diet, genetics, and microbes. Gut Microbes 2016; 7:82-9. [PMID: 26939856 PMCID: PMC4856458 DOI: 10.1080/19490976.2015.1127481] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Microbes modify immunometabolism responses linking obesity and type 2 diabetes. Immunity helps maintain a host-microbe symbiosis, but inflammation can promote insulin resistance in tissues that control blood glucose. We were interested in compartmentalization of immune responses during obesity and show here that feeding mice an obesity-causing high-fat diet (HFD) decreased a marker of neutrophil activation and cytokines related to Th17 responses in the gut. A HFD decreased IL-17 and IL-21/22 in the ileum and colon, respectively. A HFD increased IL-17, IL-21/22 and other related Th17 responses in the liver. At the whole tissue level, there is divergence in gut and metabolic tissue Th17 cytokines during diet-induced obesity. Deletion of the bacterial peptidoglycan sensor NOD2 had relatively minor effects on these immune responses. We propose a model where diet-induced obesity promotes a permissive gut immune environment and sets the stage for host genetics to contribute to dysbiosis-driven metabolic tissue inflammation.
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Affiliation(s)
- Joseph F. Cavallari
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Emmanuel Denou
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Kevin P. Foley
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Waliul I. Khan
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada,Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada
| | - Jonathan D. Schertzer
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
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Majdoubi A, Kishta OA, Thibodeau J. Role of antigen presentation in the production of pro-inflammatory cytokines in obese adipose tissue. Cytokine 2016; 82:112-21. [PMID: 26854212 DOI: 10.1016/j.cyto.2016.01.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 01/27/2016] [Accepted: 01/27/2016] [Indexed: 02/06/2023]
Abstract
Type II diabetes regroups different physiological anomalies that ultimately lead to low-grade chronic inflammation, insulin resistance and loss of pancreatic β-cells. Obesity is one of the best examples of such a condition that can develop into Metabolic Syndrome, causing serious health problems of great socio-economic consequences. The pathological outcome of obesity has a genetic basis and depends on the delicate balance between pro- and anti-inflammatory effectors of the immune system. The causal link between obesity and inflammation is well established. While innate immunity plays a key role in the development of a pro-inflammatory state in obese adipose tissues, it has now become clear that adaptive immune cells are also involved and participate in the cascade of events that lead to metabolic perturbations. The efficacy of some immunotherapeutic protocols in reducing the symptoms of obesity-driven metabolic syndrome in mice implicated all arms of the immune response. Recently, the production of pathogenic immunoglobulins and pro-inflammatory cytokines by B and T lymphocytes suggested an auto-immune basis for the establishment of a non-healthy obese state. Understanding the cellular landscape of obese adipose tissues and how immune cells sustain chronic inflammation holds the key to the development of targeted therapies. In this review, we emphasize the role of antigen-presenting cells and MHC molecules in obese adipose tissue and the general contribution of the adaptive arm of the immune system in inflammation-induced insulin resistance.
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Affiliation(s)
- Abdelilah Majdoubi
- Laboratoire d'Immunologie Moléculaire, Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Québec, Canada
| | - Osama A Kishta
- Laboratoire d'Immunologie Moléculaire, Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Québec, Canada
| | - Jacques Thibodeau
- Laboratoire d'Immunologie Moléculaire, Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Québec, Canada.
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Abstract
Low-grade tissue inflammation induced by obesity can result in insulin resistance, which in turn is a key cause of type 2 diabetes mellitus. Cells of the innate immune system produce cytokines and other factors that impair insulin signalling, which contributes to the connection between obesity and the onset of type 2 diabetes mellitus. Here, we review the innate immune cells involved in secreting inflammatory factors in the obese state. In the adipose tissue, these cells include proinflammatory adipose tissue macrophages and natural killer cells. We also discuss the role of innate immune cells, such as anti-inflammatory adipose tissue macrophages, eosinophils, group 2 innate lymphoid cells and invariant natural killer T cells, in maintaining an anti-inflammatory and insulin-sensitive environment in the lean state. In the liver, both Kupffer cells and recruited hepatic macrophages can contribute to decreased hepatic insulin sensitivity. Proinflammatory macrophages might also adversely affect insulin sensitivity in the skeletal muscle and pancreatic β-cell function. Finally, this Review provides an overview of the mechanisms for regulating proinflammatory immune responses that could lead to future therapeutic opportunities to improve insulin sensitivity.
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Affiliation(s)
- Denise E Lackey
- Department of Medicine, Division of Endocrinology and Metabolism, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0673, USA
| | - Jerrold M Olefsky
- Department of Medicine, Division of Endocrinology and Metabolism, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0673, USA
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94
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Mayoral Monibas R, Johnson AMF, Osborn O, Traves PG, Mahata SK. Distinct Hepatic Macrophage Populations in Lean and Obese Mice. Front Endocrinol (Lausanne) 2016; 7:152. [PMID: 27999564 PMCID: PMC5138231 DOI: 10.3389/fendo.2016.00152] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 11/22/2016] [Indexed: 12/17/2022] Open
Abstract
Obesity is a complex metabolic disorder associated with the development of non-communicable diseases such as cirrhosis, non-alcoholic fatty liver disease, and type 2 diabetes. In humans and rodents, obesity promotes hepatic steatosis and inflammation, which leads to increased production of pro-inflammatory cytokines and acute-phase proteins. Liver macrophages (resident as well as recruited) play a significant role in hepatic inflammation and insulin resistance (IR). Interestingly, depletion of hepatic macrophages protects against the development of high-fat-induced steatosis, inflammation, and IR. Kupffer cells (KCs), liver-resident macrophages, are the first-line defense against invading pathogens, clear toxic or immunogenic molecules, and help to maintain the liver in a tolerogenic immune environment. During high fat diet feeding and steatosis, there is an increased number of recruited hepatic macrophages (RHMs) in the liver and activation of KCs to a more inflammatory or M1 state. In this review, we will focus on the role of liver macrophages (KCs and RHMs) during obesity.
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Affiliation(s)
- Rafael Mayoral Monibas
- Merck Research Laboratories, Kenilworth, NJ, USA
- CIBERehd – Networked Biomedical Research Center, Hepatic and Digestive Diseases, Madrid, Spain
- *Correspondence: Rafael Mayoral Monibas, ; Sushil K. Mahata,
| | - Andrew M. F. Johnson
- Department of Medicine, Division of Endocrinology and Metabolism, University of California San Diego, La Jolla, CA, USA
| | - Olivia Osborn
- Department of Medicine, Division of Endocrinology and Metabolism, University of California San Diego, La Jolla, CA, USA
| | - Paqui G. Traves
- Molecular Neurobiology Laboratory, The Salk Institute, La Jolla, CA, USA
| | - Sushil K. Mahata
- Metabolic Physiology & Ultrastructural Biology Laboratory, Department of Medicine, VA San Diego Healthcare System, San Diego, CA, USA
- Metabolic Physiology & Ultrastructural Biology Laboratory, Department of Medicine, University of California San Diego, La Jolla, CA, USA
- *Correspondence: Rafael Mayoral Monibas, ; Sushil K. Mahata,
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