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Carlé C, Boucher D, Morelli L, Larue C, Ovtchinnikova E, Battut L, Boumessid K, Airaud M, Quaranta-Nicaise M, Ravanat JL, Dietrich G, Menard S, Eberl G, Barnich N, Mas E, Carriere M, Al Nabhani Z, Barreau F. Correction: Perinatal foodborne titanium dioxide exposure-mediated dysbiosis predisposes mice to develop colitis through life. Part Fibre Toxicol 2024; 21:11. [PMID: 38448937 PMCID: PMC10916257 DOI: 10.1186/s12989-024-00570-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024] Open
Affiliation(s)
- Caroline Carlé
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Delphine Boucher
- M2iSH, Université Clermont Auvergne, UMR1071 INSERM, USC INRAE 1382, Clermont-Ferrand, France
| | - Luisa Morelli
- Department of Visceral Surgery and Medicine, Bern University Hospital, University of Bern, 3010, Bern, Switzerland
- Maurice Müller Laboratories, Department for Biomedical Research, University of Bern, 3008, Bern, Switzerland
| | - Camille Larue
- Laboratoire Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, Toulouse, France
| | - Ekaterina Ovtchinnikova
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Louise Battut
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Kawthar Boumessid
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Melvin Airaud
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Muriel Quaranta-Nicaise
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Jean-Luc Ravanat
- Univ. Grenoble-Alpes, CEA, CNRS, IRIG-SyMMES, CIBEST, Grenoble, France
| | - Gilles Dietrich
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Sandrine Menard
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Gérard Eberl
- Institut Pasteur, Microenvironment and Immunity Unit, 75724, Paris, France
- INSERM U1224, Paris, France
| | - Nicolas Barnich
- M2iSH, Université Clermont Auvergne, UMR1071 INSERM, USC INRAE 1382, Clermont-Ferrand, France
| | - Emmanuel Mas
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
- Gastroenterology, Hepatology, Nutrition, Diabetology and Hereditary Metabolic Diseases Unit, Hôpital des Enfants, CHU de Toulouse, 31300, Toulouse, France
| | - Marie Carriere
- Univ. Grenoble-Alpes, CEA, CNRS, IRIG-SyMMES, CIBEST, Grenoble, France
| | - Ziad Al Nabhani
- Department of Visceral Surgery and Medicine, Bern University Hospital, University of Bern, 3010, Bern, Switzerland.
- Maurice Müller Laboratories, Department for Biomedical Research, University of Bern, 3008, Bern, Switzerland.
| | - Frédérick Barreau
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France.
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Carlé C, Boucher D, Morelli L, Larue C, Ovtchinnikova E, Battut L, Boumessid K, Airaud M, Quaranta-Nicaise M, Ravanat JL, Dietrich G, Menard S, Eberl G, Barnich N, Mas E, Carriere M, Al Nabhani Z, Barreau F. Perinatal foodborne titanium dioxide exposure-mediated dysbiosis predisposes mice to develop colitis through life. Part Fibre Toxicol 2023; 20:45. [PMID: 37996842 PMCID: PMC10666382 DOI: 10.1186/s12989-023-00555-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 11/13/2023] [Indexed: 11/25/2023] Open
Abstract
BACKGROUND Perinatal exposure to titanium dioxide (TiO2), as a foodborne particle, may influence the intestinal barrier function and the susceptibility to develop inflammatory bowel disease (IBD) later in life. Here, we investigate the impact of perinatal foodborne TiO2 exposure on the intestinal mucosal function and the susceptibility to develop IBD-associated colitis. Pregnant and lactating mother mice were exposed to TiO2 until pups weaning and the gut microbiota and intestinal barrier function of their offspring was assessed at day 30 post-birth (weaning) and at adult age (50 days). Epigenetic marks was studied by DNA methylation profile measuring the level of 5-methyl-2'-deoxycytosine (5-Me-dC) in DNA from colic epithelial cells. The susceptibility to develop IBD has been monitored using dextran-sulfate sodium (DSS)-induced colitis model. Germ-free mice were used to define whether microbial transfer influence the mucosal homeostasis and subsequent exacerbation of DSS-induced colitis. RESULTS In pregnant and lactating mice, foodborne TiO2 was able to translocate across the host barriers including gut, placenta and mammary gland to reach embryos and pups, respectively. This passage modified the chemical element composition of foetus, and spleen and liver of mothers and their offspring. We showed that perinatal exposure to TiO2 early in life alters the gut microbiota composition, increases the intestinal epithelial permeability and enhances the colonic cytokines and myosin light chain kinase expression. Moreover, perinatal exposure to TiO2 also modifies the abilities of intestinal stem cells to survive, grow and generate a functional epithelium. Maternal TiO2 exposure increases the susceptibility of offspring mice to develop severe DSS-induced colitis later in life. Finally, transfer of TiO2-induced microbiota dysbiosis to pregnant germ-free mice affects the homeostasis of the intestinal mucosal barrier early in life and confers an increased susceptibility to develop colitis in adult offspring. CONCLUSIONS Our findings indicate that foodborne TiO2 consumption during the perinatal period has negative long-lasting consequences on the development of the intestinal mucosal barrier toward higher colitis susceptibility. This demonstrates to which extent environmental factors influence the microbial-host interplay and impact the long-term mucosal homeostasis.
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Affiliation(s)
- Caroline Carlé
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Delphine Boucher
- M2iSH, Université Clermont Auvergne, UMR1071 INSERM, USC INRAE 1382, Clermont-Ferrand, France
| | - Luisa Morelli
- Department of Visceral Surgery and Medicine, Bern University Hospital, University of Bern, 3010, Bern, Switzerland
- Maurice Müller Laboratories, Department for Biomedical Research, University of Bern, 3008, Bern, Switzerland
| | - Camille Larue
- Laboratoire Ecologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, Toulouse, France
| | - Ekaterina Ovtchinnikova
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Louise Battut
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Kawthar Boumessid
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Melvin Airaud
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Muriel Quaranta-Nicaise
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Jean-Luc Ravanat
- Univ. Grenoble-Alpes, CEA, CNRS, IRIG-SyMMES, CIBEST, Grenoble, France
| | - Gilles Dietrich
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Sandrine Menard
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
| | - Gérard Eberl
- Institut Pasteur, Microenvironment and Immunity Unit, 75724, Paris, France
- INSERM U1224, Paris, France
| | - Nicolas Barnich
- M2iSH, Université Clermont Auvergne, UMR1071 INSERM, USC INRAE 1382, Clermont-Ferrand, France
| | - Emmanuel Mas
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France
- Gastroenterology, Hepatology, Nutrition, Diabetology and Hereditary Metabolic Diseases Unit, Hôpital des Enfants, CHU de Toulouse, 31300, Toulouse, France
| | - Marie Carriere
- Univ. Grenoble-Alpes, CEA, CNRS, IRIG-SyMMES, CIBEST, Grenoble, France
| | - Ziad Al Nabhani
- Department of Visceral Surgery and Medicine, Bern University Hospital, University of Bern, 3010, Bern, Switzerland.
- Maurice Müller Laboratories, Department for Biomedical Research, University of Bern, 3008, Bern, Switzerland.
| | - Frédérick Barreau
- Institut de Recherche en Santé Digestive (IRSD), INSERM UMR-1220, Purpan Hospital, CS60039, University of Toulouse, INSERM, INRAE, ENVT, UPS, 31024, Toulouse Cedex 03, France.
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Carlé C, Mas E, Barreau F. Intestinal involvement in lupus: From pathophysiology to therapeutic perspectives. Lupus 2023; 32:461-470. [PMID: 36896485 DOI: 10.1177/09612033231155840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Lupus erythematosus is a complex autoimmune disease characterized by skin and/or systemic involvement. Among systemic disorders, half of the patients will experience non-specific digestive symptoms, usually due to drug medication or transitory infections. In rare cases, lupus enteritis can be observed, and its diagnosis may precede the disease and/or be associated with an inflammatory bowel disease (IBD). Among the underlying mechanisms explaining the digestive damages observed in systemic lupus erythematosus (SLE) and the intestinal barrier function (IBF), increased intestinal permeability, microbiota dysbiosis, and intestinal immune system dysregulations are described in numerous murine and human studies. New therapeutic approaches in addition to conventional treatments are evoked in order to better control the IBF disruption and maybe prevent the onset or worsening of the disease. Thus, the aims of this review are to present the alterations of the digestive tract in SLE patients and the link between SLE and IBD as well as how the different elements of the IBF could participate in SLE pathogenesis.
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Affiliation(s)
- Caroline Carlé
- INSERM UMR 1220, INRAE UMR 1416, ENVT, 575024Université de Toulouse Paul Sabatier, Toulouse, France.,Laboratoire de Biologie Cellulaire, Institut Fédératif de Biologie, 54904CHU de Toulouse, Toulouse, France
| | - Emmanuel Mas
- INSERM UMR 1220, INRAE UMR 1416, ENVT, 575024Université de Toulouse Paul Sabatier, Toulouse, France.,Unité de Gastroentérologie, Hépatologie, Nutrition, Diabétologie et Maladies Héréditaires du Métabolisme, Hôpital des Enfants, 36760CHU de Toulouse, Toulouse, France
| | - Frédérick Barreau
- INSERM UMR 1220, INRAE UMR 1416, ENVT, 575024Université de Toulouse Paul Sabatier, Toulouse, France
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Solà Tapias N, Denadai-Souza A, Rolland-Fourcade C, Quaranta-Nicaise M, Blanpied C, Marcellin M, Edir A, Rolland C, Cirillo C, Dietrich G, Alric L, Portier G, Kirzin S, Bonnet D, Mas E, Burlet-Schiltz O, Deraison C, Bonnart C, Vergnolle N, Barreau F. Colitis Linked to Endoplasmic Reticulum Stress Induces Trypsin Activity Affecting Epithelial Functions. J Crohns Colitis 2021; 15:1528-1541. [PMID: 33609354 DOI: 10.1093/ecco-jcc/jjab035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND AIMS Intestinal epithelial cells [IECs] from inflammatory bowel disease [IBD] patients exhibit an excessive induction of endoplasmic reticulum stress [ER stress] linked to altered intestinal barrier function and inflammation. Colonic tissues and the luminal content of IBD patients are also characterized by increased serine protease activity. The possible link between ER stress and serine protease activity in colitis-associated epithelial dysfunctions is unknown. We aimed to study the association between ER stress and serine protease activity in enterocytes and its impact on intestinal functions. METHODS The impact of ER stress induced by Thapsigargin on serine protease secretion was studied using either human intestinal cell lines or organoids. Moreover, treating human intestinal cells with protease-activated receptor antagonists allowed us to investigate ER stress-resulting molecular mechanisms that induce proteolytic activity and alter intestinal epithelial cell biology. RESULTS Colonic biopsies from IBD patients exhibited increased epithelial trypsin-like activity associated with elevated ER stress. Induction of ER stress in human intestinal epithelial cells displayed enhanced apical trypsin-like activity. ER stress-induced increased trypsin activity destabilized intestinal barrier function by increasing permeability and by controlling inflammatory mediators such as C-X-C chemokine ligand 8 [CXCL8]. The deleterious impact of ER stress-associated trypsin activity was specifically dependent on the activation of protease-activated receptors 2 and 4. CONCLUSIONS Excessive ER stress in IECs caused an increased release of trypsin activity that, in turn, altered intestinal barrier function, promoting the development of inflammatory process.
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Affiliation(s)
- Núria Solà Tapias
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | | | | | | | | | - Marlène Marcellin
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Anissa Edir
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - Corinne Rolland
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - Carla Cirillo
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France.,Laboratory for Enteric NeuroScience (LENS), TARGID, University of Leuven, Leuven, Belgium
| | - Gilles Dietrich
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | | | | | | | | | - Emmanuel Mas
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France.,Pole Digestif, CHU, Toulouse, France
| | - Odile Burlet-Schiltz
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Céline Deraison
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | | | - Nathalie Vergnolle
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France.,Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada
| | - Frédérick Barreau
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
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Barreau F, Tisseyre C, Ménard S, Ferrand A, Carriere M. Titanium dioxide particles from the diet: involvement in the genesis of inflammatory bowel diseases and colorectal cancer. Part Fibre Toxicol 2021; 18:26. [PMID: 34330311 PMCID: PMC8323234 DOI: 10.1186/s12989-021-00421-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 07/19/2021] [Indexed: 12/12/2022] Open
Abstract
The gastrointestinal tract is a complex interface between the external environment and the immune system. Its ability to control uptake across the mucosa and to protect the body from damage of harmful substances from the lumen is defined as the intestinal barrier function (IBF). The IBF involves four elements: the intestinal microbiota, the mucus layer, the epithelium and the immune system. Its dysfunction is linked with human diseases including inflammatory, metabolic, infectious, autoimmune and neurologic disorders. Most of these diseases are complex and involve genetic, psychological and environmental factors. Over the past 10 years, many genetic polymorphisms predisposing to inflammatory bowel disease (IBD) have been identified. Yet, it is now clear that they are insufficient to explain the onset of these chronic diseases. Although it has been evidenced that some environmental factors such as cigarette smoking or carbohydrate intake are associated with IBD, other environmental factors also present potential health risks such as ingestion of food additives introduced in the human diet, including those composed of mineral particles, by altering the four elements of the intestinal barrier function. The aim of this review is to provide a critical opinion on the potential of TiO2 particles, especially when used as a food additive, to alter the four elements of the intestinal barrier function, and consequently to evaluate if this additive would likely play a role in the development and/or exacerbation of IBD.
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Affiliation(s)
- Frédérick Barreau
- INSERM, UMR 1220, Institut de Recherche en Santé Digestive, 31024, Toulouse, France. .,Université de Toulouse, Toulouse, France.
| | - Céline Tisseyre
- Univ. Grenoble Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, CIBEST, 17 rue des Martyrs, 38000, Grenoble, France
| | - Sandrine Ménard
- INSERM, UMR 1220, Institut de Recherche en Santé Digestive, 31024, Toulouse, France.,Université de Toulouse, Toulouse, France
| | - Audrey Ferrand
- INSERM, UMR 1220, Institut de Recherche en Santé Digestive, 31024, Toulouse, France.,Université de Toulouse, Toulouse, France
| | - Marie Carriere
- Univ. Grenoble Grenoble Alpes, CEA, CNRS, IRIG-SyMMES, CIBEST, 17 rue des Martyrs, 38000, Grenoble, France.
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Abstract
Crohn's disease [CD] is an inflammatory bowel disease of unknown aetiology. During recent decades, significant technological advances led to development of -omic datasets allowing a detailed description of the disease. Unfortunately these have not, to date, resolved the question of the aetiology of CD. Thus, it may be necessary to [re]consider hypothesis-driven approaches to resolve the aetiology of CD. According to the cold chain hypothesis, the development of industrial and domestic refrigeration has led to frequent exposure of human populations to bacteria capable of growing in the cold. These bacteria, at low levels of exposure, particularly those of the genus Yersinia, are believed to be capable of inducing exacerbated inflammation of the intestine in genetically predisposed subjects. We discuss the consistency of this working hypothesis in light of recent data from epidemiological, clinical, pathological, microbiological, and molecular studies.
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Affiliation(s)
- Jean-Pierre Hugot
- Centre de recherche sur l’inflammation, UMR1149 INSERM and Université de Paris, Paris, France,Service des maladies digestives et respiratoires de l’enfant, Hôpital Robert Debré, Assistance Publique Hôpitaux de Paris, Paris, France,Corresponding author: Jean-Pierre Hugot, MD, PhD, Service des maladies digestives et respiratoires de l’enfant, Hôpital Robert Debré, 48 Bd Sérurier, F75019 Paris, France. Tel.: [33] 1 40 03 57 12; fax: [33] 1 40 03 57 66;
| | - Anne Dumay
- Centre de recherche sur l’inflammation, UMR1149 INSERM and Université de Paris, Paris, France
| | - Frédérick Barreau
- IRSD, UMR1220, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - Ulrich Meinzer
- Centre de recherche sur l’inflammation, UMR1149 INSERM and Université de Paris, Paris, France,Service des maladies digestives et respiratoires de l’enfant, Hôpital Robert Debré, Assistance Publique Hôpitaux de Paris, Paris, France
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Bourchany A, Gilletta De Saint-Joseph C, Breton A, Barreau F, Mas E. Optimization of biologics to reduce treatment failure in inflammatory bowel diseases. Curr Opin Pharmacol 2020; 54:51-58. [PMID: 32947075 DOI: 10.1016/j.coph.2020.07.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/27/2020] [Accepted: 07/31/2020] [Indexed: 01/06/2023]
Abstract
Moderate to severe inflammatory bowel disease patients can fail to respond to conventional therapy and/or to biologic treatment. In the era of TNFα antagonists and other non-anti-TNF biologic drugs, it is important to review the literature on biologic treatment failure, which could be defined as primary non-response, secondary loss of response and intolerance. Therapeutic drug monitoring (TDM), that is, drug trough level and antidrug antibodies, should enable to determine the mechanisms of treatment failure and to optimize drug efficacy. There is a consensus on reactive TDM at the time of loss of response. Proactive TDM could be of interest during induction and/or maintenance, but randomized controlled trials are required.
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Affiliation(s)
- Aurélie Bourchany
- Unité de Gastroentérologie, Hépatologie, Nutrition, Diabétologie et Maladies Héréditaires du Métabolisme, Hôpital des Enfants, CHU de Toulouse, F-31300, France
| | | | - Anne Breton
- Unité de Gastroentérologie, Hépatologie, Nutrition, Diabétologie et Maladies Héréditaires du Métabolisme, Hôpital des Enfants, CHU de Toulouse, F-31300, France
| | - Frédérick Barreau
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - Emmanuel Mas
- Unité de Gastroentérologie, Hépatologie, Nutrition, Diabétologie et Maladies Héréditaires du Métabolisme, Hôpital des Enfants, CHU de Toulouse, F-31300, France; IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France.
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Solà-Tapias N, Vergnolle N, Denadai-Souza A, Barreau F. The Interplay Between Genetic Risk Factors and Proteolytic Dysregulation in the Pathophysiology of Inflammatory Bowel Disease. J Crohns Colitis 2020; 14:1149-1161. [PMID: 32090263 DOI: 10.1093/ecco-jcc/jjaa033] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Crohn's disease [CD] and ulcerative colitis [UC] are the two main forms of inflammatory bowel disease [IBD]. Previous studies reported increased levels of proteolytic activity in stool and tissue samples from IBD patients, whereas the re-establishment of the proteolytic balance abrogates the development of experimental colitis. Furthermore, recent data suggest that IBD occurs in genetically predisposed individuals who develop an abnormal immune response to intestinal microbes once exposed to environmental triggers. In this review, we highlight the role of proteases in IBD pathophysiology, and we showcase how the main cellular pathways associated with IBD influence proteolytic unbalance and how functional proteomics are allowing the unambiguous identification of dysregulated proteases in IBD, paving the way to the development of new protease inhibitors as a new potential treatment.
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Affiliation(s)
- Núria Solà-Tapias
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - Nathalie Vergnolle
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France.,Department of Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - Alexandre Denadai-Souza
- Department of Chronic Diseases, Metabolism and Ageing, University of Leuven, Leuven, Belgium
| | - Frédérick Barreau
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
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Al Nabhani Z, Berrebi D, Martinez-Vinson C, Montcuquet N, Madre C, Roy M, Ogier-Denis E, Dussaillant M, Cerf-Bensussan N, Zouali H, Daniel F, Barreau F, Hugot JP. Nod2 Protects the Gut From Experimental Colitis Spreading to Small Intestine. J Crohns Colitis 2020; 14:669-679. [PMID: 31784737 DOI: 10.1093/ecco-jcc/jjz196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIMS Nucleotide oligomerization domain 2 [NOD2] mutations are key risk factors for Crohn's disease [CD]. NOD2 contributes to intestinal homeostasis by regulating innate and adaptive immunity together with intestinal epithelial function. However, the exact roles of NOD2 in CD and other NOD2-associated disorders remain poorly known. METHODS We initially observed that NOD2 expression was increased in epithelial cells away from inflamed areas in CD patients. To explore this finding, Nod2 mRNA expression, inflammation, and cytokines expression were examined in the small bowel of wild-type [WT], Nod2 knockout and Nod2 mutant mice after rectal instillation of 2,4,6-trinitrobenzene sulphonic acid [TNBS]. RESULTS In WT mice, Nod2 upregulation upstream to rectal injury was associated with pro-inflammatory cytokine expression but no overt histological inflammatory lesions. Conversely, in Nod2-deficient mice the inflammation spread from colitis to ileum and duodenum. CONCLUSIONS Nod2 protects the gut from colitis spreading to small intestine.
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Affiliation(s)
- Ziad Al Nabhani
- Centre de recherche sur l'inflammation, INSERM et Université de Paris, Paris, France
| | - Dominique Berrebi
- Centre de recherche sur l'inflammation, INSERM et Université de Paris, Paris, France.,Hopital Robert Debré, Asssitance Publique Hôpitaux de Paris, Paris, France
| | | | - Nicolas Montcuquet
- Laboratoire d'immunité intestinale, Paris, France.,Université Paris Descartes - Sorbonne Paris Cité, Institut IMAGINE, Paris, France
| | - Chrystele Madre
- Hopital Robert Debré, Asssitance Publique Hôpitaux de Paris, Paris, France
| | - Maryline Roy
- Centre de recherche sur l'inflammation, INSERM et Université de Paris, Paris, France
| | - Eric Ogier-Denis
- Centre de recherche sur l'inflammation, INSERM et Université de Paris, Paris, France
| | - Monique Dussaillant
- Centre de recherche sur l'inflammation, INSERM et Université de Paris, Paris, France
| | - Nadine Cerf-Bensussan
- Laboratoire d'immunité intestinale, Paris, France.,Université Paris Descartes - Sorbonne Paris Cité, Institut IMAGINE, Paris, France
| | | | - Fanny Daniel
- Centre de recherche sur l'inflammation, INSERM et Université de Paris, Paris, France
| | - Frédérick Barreau
- Centre de recherche sur l'inflammation, INSERM et Université de Paris, Paris, France.,IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - Jean-Pierre Hugot
- Centre de recherche sur l'inflammation, INSERM et Université de Paris, Paris, France.,Hopital Robert Debré, Asssitance Publique Hôpitaux de Paris, Paris, France
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10
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Sébert M, Sola-Tapias N, Mas E, Barreau F, Ferrand A. Protease-Activated Receptors in the Intestine: Focus on Inflammation and Cancer. Front Endocrinol (Lausanne) 2019; 10:717. [PMID: 31708870 PMCID: PMC6821688 DOI: 10.3389/fendo.2019.00717] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 10/04/2019] [Indexed: 12/12/2022] Open
Abstract
Protease-activated receptors (PARs) belong to the G protein-coupled receptor (GPCR) family. Compared to other GPCRs, the specificity of the four PARs is the lack of physiologically soluble ligands able to induce their activation. Indeed, PARs are physiologically activated after proteolytic cleavage of their N-terminal domain by proteases. The resulting N-terminal end becomes a tethered activation ligand that interact with the extracellular loop 2 domain and thus induce PAR signal. PARs expression is ubiquitous and these receptors have been largely described in chronic inflammatory diseases and cancer. In this review, after describing their discovery, structure, mechanisms of activation, we then focus on the roles of PARs in the intestine and the two main diseases affecting the organ, namely inflammatory bowel diseases and cancer.
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11
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Dorier M, Tisseyre C, Dussert F, Béal D, Arnal ME, Douki T, Valdiglesias V, Laffon B, Fraga S, Brandão F, Herlin-Boime N, Barreau F, Rabilloud T, Carriere M. Toxicological impact of acute exposure to E171 food additive and TiO 2 nanoparticles on a co-culture of Caco-2 and HT29-MTX intestinal cells. Mutat Res 2018; 845:402980. [PMID: 31561898 DOI: 10.1016/j.mrgentox.2018.11.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 10/04/2018] [Accepted: 11/18/2018] [Indexed: 11/25/2022]
Abstract
TiO2 particles are widely used in products for everyday consumption, such as cosmetics and food; their possible adverse effects on human health must therefore be investigated. The aim of this study was to document in vitro impact of the food additive E171, i.e. TiO2, and of TiO2 nanoparticles, on a co-culture of Caco-2 and HT29-MTX cells, which is an in vitro model for human intestine. Cells were exposed to TiO2 particles three days after seeding, i.e. while they were not fully differentiated. Cell viability, reactive oxygen species (ROS) levels and DNA integrity were assessed, by MTT assay, DCFH-DA assay, alkaline and Fpg-modified comet assay and 8-oxo-dGuo measurement by HPLC-MS/MS. The mRNA expression of genes involved in ROS regulation, DNA repair via base-excision repair, and endoplasmic reticulum stress was assessed by RT-qPCR. Exposure to TiO2 particles resulted in increased intracellular ROS levels, but did not impair cell viability and did not cause any oxidative damage to DNA. Only minor changes in mRNA expression were detected. Altogether, this shows that E171 food additive and TiO2 nanoparticles only produce minor effects to this in vitro intestinal cell model.
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Affiliation(s)
- Marie Dorier
- Univ. Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), 38000, Grenoble, France
| | - Céline Tisseyre
- Univ. Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), 38000, Grenoble, France
| | - Fanny Dussert
- Univ. Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), 38000, Grenoble, France
| | - David Béal
- Univ. Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), 38000, Grenoble, France
| | - Marie-Edith Arnal
- Univ. Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), 38000, Grenoble, France
| | - Thierry Douki
- Univ. Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), 38000, Grenoble, France
| | - Vanessa Valdiglesias
- Universidade da Coruña, DICOMOSA Group, Department of Psychology, Area of Psychobiology, Edificio de Servicios Centrales de Investigación, Campus Elviña s/n, 15071-A, Coruña, Spain
| | - Blanca Laffon
- Universidade da Coruña, DICOMOSA Group, Department of Psychology, Area of Psychobiology, Edificio de Servicios Centrales de Investigación, Campus Elviña s/n, 15071-A, Coruña, Spain
| | - Sónia Fraga
- National Institute of Health, Dept. of Environmental Health, Porto, Portugal; EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal
| | - Fátima Brandão
- National Institute of Health, Dept. of Environmental Health, Porto, Portugal; EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal
| | - Nathalie Herlin-Boime
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA, Saclay, 91191, Gif-sur-Yvette France
| | - Frédérick Barreau
- INSERM, UMR 1220, Institut de Recherche en Santé Digestive, Toulouse, France
| | - Thierry Rabilloud
- ProMD, UMR CNRS 5249, CEA Grenoble, DRF/BIG/CBM, Laboratory of Chemistry and Biology of Metals, 38000, Grenoble, France
| | - Marie Carriere
- Univ. Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), 38000, Grenoble, France.
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12
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Dorier M, Béal D, Marie-Desvergne C, Dubosson M, Barreau F, Houdeau E, Herlin-Boime N, Carriere M. Continuous in vitro exposure of intestinal epithelial cells to E171 food additive causes oxidative stress, inducing oxidation of DNA bases but no endoplasmic reticulum stress. Nanotoxicology 2017; 11:751-761. [PMID: 28671030 DOI: 10.1080/17435390.2017.1349203] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The whitening and opacifying properties of titanium dioxide (TiO2) are commonly exploited when it is used as a food additive (E171). However, the safety of this additive can be questioned as TiO2 nanoparticles (TiO2-NPs) have been classed at potentially toxic. This study aimed to shed some light on the mechanisms behind the potential toxicity of E171 on epithelial intestinal cells, using two in vitro models: (i) a monoculture of differentiated Caco-2 cells and (ii) a coculture of Caco-2 with HT29-MTX mucus-secreting cells. Cells were exposed to E171 and two different types of TiO2-NPs, either acutely (6-48 h) or repeatedly (three times a week for 3 weeks). Our results confirm that E171 damaged these cells, and that the main mechanism of toxicity was oxidation effects. Responses of the two models to E171 were similar, with a moderate, but significant, accumulation of reactive oxygen species, and concomitant downregulation of the expression of the antioxidant enzymes catalase, superoxide dismutase and glutathione reductase. Oxidative damage to DNA was detected in exposed cells, proving that E171 effectively induces oxidative stress; however, no endoplasmic reticulum stress was detected. E171 effects were less intense after acute exposure compared to repeated exposure, which correlated with higher Ti accumulation. The effects were also more intense in cells exposed to E171 than in cells exposed to TiO2-NPs. Taken together, these data show that E171 induces only moderate toxicity in epithelial intestinal cells, via oxidation.
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Affiliation(s)
- Marie Dorier
- a Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST) , INAC, SyMMES, University of Grenoble Alpes , Grenoble , France.,b Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST) , CEA, INAC, LCIB , Grenoble , France
| | - David Béal
- a Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST) , INAC, SyMMES, University of Grenoble Alpes , Grenoble , France.,b Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST) , CEA, INAC, LCIB , Grenoble , France
| | - Caroline Marie-Desvergne
- c Nanosafety Platform, Medical Biology Laboratory (LBM) , CEA, University of Grenoble Alpes , Grenoble , France
| | - Muriel Dubosson
- c Nanosafety Platform, Medical Biology Laboratory (LBM) , CEA, University of Grenoble Alpes , Grenoble , France
| | - Frédérick Barreau
- d INSERM, UMR1220 , Institut de Recherche en Santé Digestive , Toulouse , France
| | - Eric Houdeau
- e Toxalim (Research Center in Food Toxicology), Department Intestinal Development , Xeniobiotics and ImmunoToxicology, Université de Toulouse, INRA, ENVT, INP-Purpan , Toulouse , France.,f UPS, UMR1331, Toxalim , Université de Toulouse , Toulouse , France
| | | | - Marie Carriere
- a Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST) , INAC, SyMMES, University of Grenoble Alpes , Grenoble , France.,b Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST) , CEA, INAC, LCIB , Grenoble , France
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13
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Al Nabhani Z, Lepage P, Mauny P, Montcuquet N, Roy M, Le Roux K, Dussaillant M, Berrebi D, Hugot JP, Barreau F. Nod2 Deficiency Leads to a Specific and Transmissible Mucosa-associated Microbial Dysbiosis Which Is Independent of the Mucosal Barrier Defect. J Crohns Colitis 2016; 10:1428-1436. [PMID: 27147452 DOI: 10.1093/ecco-jcc/jjw095] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 02/25/2016] [Accepted: 03/22/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Crohn's disease [CD] is a complex disorder characterised by an inappropriate immune response, impaired barrier function and microbial dysbiosis. Mutations in nucleotide oligomeriation domain 2 [NOD2] are CD risk factors. Increase of intestinal permeability, CD4+ T cell infiltration, and bacterial dysbiosis are also seen in Nod2-knockout [Nod2 KO] mice. However, the specificity and relationship between these Nod2-associated abnormalities remain largely unexplored. METHODS Wild-type [WT], Nod1-knockout [Nod1 KO] and Nod2 KO mice were analysed in parallel. Microbial composition was defined by 454-pyrosequencing of bacterial 16S rRNA genes. Mucin and antimicrobial peptide expression was assessed by RT-PCR. Cell populations from Peyer's patches were determined by flow cytometry. Ussing chambers were used to measure intestinal permeability and bacterial translocation. Finally, to explore the impact of colonisation with mother's microbiota at birth, analyses were also performed in Nod2 KO and WT mice born from WT surrogate mothers after embryo transfer. RESULTS Nod2 KO mice exhibited colonic bacterial dysbiosis different from WT and Nod1 KO mice. Altered expression of antimicrobial peptides and mucins in ileum and colon was associated with the microbial composition. Bacterial composition of Nod2 KO and WT mice obtained by embryo transfer was similar to that observed in Nod2 KO mice, arguing for a dominant effect of Nod2 KO-associated dysbiosis. In contrast, increased levels of CD4+ T cells and gut barrier defects across Peyer's patches were specific to Nod2 deficiency and independent of Microbial dysbiosis. CONCLUSIONS Nod2 deficiency is associated with a specific dominant dysbiosis which does not drive mucosal tissue and immune alterations.
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Affiliation(s)
- Ziad Al Nabhani
- Laboratoire d'excellence Inflamex, Université Paris-Diderot Sorbonne Paris-Cité, France.,INSERM, UMR 1149, F-75018 Paris, France.,INRA, MICALIS-UMR1319, Jouy-en-Josas, France.,AgroParisTech, MICALIS-UMR1319, Jouy-en-Josas, France
| | - Patricia Lepage
- INRA, MICALIS-UMR1319, Jouy-en-Josas, France.,AgroParisTech, MICALIS-UMR1319, Jouy-en-Josas, France
| | | | - Nicolas Montcuquet
- INSERM, UMR 989, F-75015 Paris, France.,Université Paris Descartes - Sorbonne Paris Cité, Institut IMAGINE, Paris, France
| | - Maryline Roy
- Laboratoire d'excellence Inflamex, Université Paris-Diderot Sorbonne Paris-Cité, France.,INSERM, UMR 1149, F-75018 Paris, France
| | - Karine Le Roux
- INRA, MICALIS-UMR1319, Jouy-en-Josas, France.,AgroParisTech, MICALIS-UMR1319, Jouy-en-Josas, France
| | - Monique Dussaillant
- Laboratoire d'excellence Inflamex, Université Paris-Diderot Sorbonne Paris-Cité, France.,INSERM, UMR 1149, F-75018 Paris, France
| | - Dominique Berrebi
- Services d'anatomie et de cytologie pathologiques, Hôpital Robert Debré, Université Paris-Diderot Sorbonne Paris-Cité, Paris, France.,UMR996, Cytokines, chimiokines et immunopathologie, Clamart, France
| | - Jean-Pierre Hugot
- Laboratoire d'excellence Inflamex, Université Paris-Diderot Sorbonne Paris-Cité, France.,INSERM, UMR 1149, F-75018 Paris, France.,Services des maladies digestives et respiratoires de l'enfant et service d'anatomie pathologique, Hôpital Robert Debré, Paris, France
| | - Frédérick Barreau
- Laboratoire d'excellence Inflamex, Université Paris-Diderot Sorbonne Paris-Cité, France .,INSERM, UMR 1149, F-75018 Paris, France.,Institut de Recherche en Santé Digestive, Université de Toulouse, Toulouse, France
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14
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Reiss D, Ceredig RA, Secher T, Boué J, Barreau F, Dietrich G, Gavériaux-Ruff C. Mu and delta opioid receptor knockout mice show increased colonic sensitivity. Eur J Pain 2016; 21:623-634. [PMID: 27748566 DOI: 10.1002/ejp.965] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/09/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Opiates act through opioid receptors to diminish pain. Here, we investigated whether mu (MOR) and delta (DOR) receptor endogenous activity assessed in the whole mouse body or in particular at peripheral receptors on primary nociceptive neurons, control colonic pain. METHODS We compared global MOR and DOR receptor knockout (KO) mice, mice with a conditional deletion of MOR and DOR in Nav1.8-positive nociceptive primary afferent neurons (cKO), and control floxed mice of both genders for visceral sensitivity. Visceromotor responses to colorectal distension (CRD) and macroscopic colon scores were recorded on naïve mice and mice with acute colitis induced by 3% dextran sodium sulphate (DSS) for 5 days. Transcript expression for opioid genes and cytokines was measured by quantitative RT-PCR. RESULTS Naïve MOR and DOR global KO mice show increased visceral sensitivity that was not observed in cKO mice. MOR and preproenkephalin (Penk) were the most expressed opioid genes in colon. MOR KO mice had augmented kappa opioid receptor and Tumour-Necrosis-Factor-α and diminished Penk transcript levels while DOR, preprodynorphin and Interleukin-1β were unchanged. Global MOR KO females had a thicker colon than floxed females. No alteration was detected in DOR mutant animals. A 5-day DSS treatment led to comparable hypersensitivity in the different mouse lines. CONCLUSION Our results suggest that mu and delta opioid receptor global endogenous activity but not activity at the peripheral Nav1.8 neurons contribute to visceral sensitivity in naïve mice, and that endogenous MOR and DOR tones were insufficient to elicit analgesia after 5-day DSS-induced colitis. SIGNIFICANCE Knockout mice for mu and delta opioid receptor have augmented colon sensitivity in the CRD assay. It shows endogenous mu and delta opioid analgesia that may be explored as potential targets for alleviating chronic intestinal pain.
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Affiliation(s)
- D Reiss
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Université de Strasbourg, Illkirch, France.,Centre National de la Recherche Scientifique, UMR7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France
| | - R A Ceredig
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Université de Strasbourg, Illkirch, France.,Centre National de la Recherche Scientifique, UMR7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France.,Institut des Neurosciences Cellulaires et Intégratives INCI, UPR3212, Strasbourg, France
| | - T Secher
- Institut de Recherche en Santé Digestive IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - J Boué
- Institut de Recherche en Santé Digestive IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - F Barreau
- Institut de Recherche en Santé Digestive IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - G Dietrich
- Institut de Recherche en Santé Digestive IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, Toulouse, France
| | - C Gavériaux-Ruff
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Université de Strasbourg, Illkirch, France.,Centre National de la Recherche Scientifique, UMR7104, Illkirch, France.,Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France.,Ecole Supérieure de Biotechnologie de Strasbourg, Université de Strasbourg, France
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15
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Dorier M, Brun E, Veronesi G, Barreau F, Pernet-Gallay K, Desvergne C, Rabilloud T, Carapito C, Herlin-Boime N, Carrière M. Impact of anatase and rutile titanium dioxide nanoparticles on uptake carriers and efflux pumps in Caco-2 gut epithelial cells. Nanoscale 2015; 7:7352-7360. [PMID: 25825056 DOI: 10.1039/c5nr00505a] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
TiO2 microparticles are widely used in food products, where they are added as a white food colouring agent. This food additive contains a significant amount of nanoscale particles; still the impact of TiO2 nanoparticles (TiO2-NPs) on gut cells is poorly documented. Our study aimed at evaluating the impact of rutile and anatase TiO2-NPs on the main functions of enterocytes, i.e. nutrient absorption driven by solute-liquid carriers (SLC transporters) and protection against other xenobiotics driven by efflux pumps from the ATP-binding cassette (ABC) family. We show that acute exposure of Caco-2 cells to both anatase (12 nm) and rutile (20 nm) TiO2-NPs induce early upregulation of a battery of efflux pumps and nutrient transporters. In addition they cause overproduction of reactive oxygen species and misbalance redox repair systems, without inducing cell mortality or DNA damage. Taken together, these data suggest that TiO2-NPs may increase the functionality of gut epithelial cells, particularly their property to form a protective barrier against exogenous toxicants and to absorb nutrients.
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Affiliation(s)
- M Dorier
- Univ. Grenoble Alpes, INAC, SCIB, F-38000 Grenoble, France.
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16
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Spenlé C, Lefebvre O, Lacroute J, Méchine-Neuville A, Barreau F, Blottière HM, Duclos B, Arnold C, Hussenet T, Hemmerlé J, Gullberg D, Kedinger M, Sorokin L, Orend G, Simon-Assmann P. The laminin response in inflammatory bowel disease: protection or malignancy? PLoS One 2014; 9:e111336. [PMID: 25347196 PMCID: PMC4210184 DOI: 10.1371/journal.pone.0111336] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 09/23/2014] [Indexed: 02/07/2023] Open
Abstract
Laminins (LM), basement membrane molecules and mediators of epithelial-stromal communication, are crucial in tissue homeostasis. Inflammatory Bowel Diseases (IBD) are multifactorial pathologies where the microenvironment and in particular LM play an important yet poorly understood role in tissue maintenance, and in cancer progression which represents an inherent risk of IBD. Here we showed first that in human IBD colonic samples and in murine colitis the LMα1 and LMα5 chains are specifically and ectopically overexpressed with a concomitant nuclear p53 accumulation. Linked to this observation, we provided a mechanism showing that p53 induces LMα1 expression at the promoter level by ChIP analysis and this was confirmed by knockdown in cell transfection experiments. To mimic the human disease, we induced colitis and colitis-associated cancer by chemical treatment (DSS) combined or not with a carcinogen (AOM) in transgenic mice overexpressing LMα1 or LMα5 specifically in the intestine. We demonstrated that high LMα1 or LMα5 expression decreased susceptibility towards experimentally DSS-induced colon inflammation as assessed by histological scoring and decrease of pro-inflammatory cytokines. Yet in a pro-oncogenic context, we showed that LM would favor tumorigenesis as revealed by enhanced tumor lesion formation in both LM transgenic mice. Altogether, our results showed that nuclear p53 and associated overexpression of LMα1 and LMα5 protect tissue from inflammation. But in a mutation setting, the same LM molecules favor progression of IBD into colitis-associated cancer. Our transgenic mice represent attractive new models to acquire knowledge about the paradoxical effect of LM that mediate either tissue reparation or cancer according to the microenvironment. In the early phases of IBD, reinforcing basement membrane stability/organization could be a promising therapeutic approach.
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Affiliation(s)
- Caroline Spenlé
- Inserm U1109, MNT3 team, Strasbourg, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Olivier Lefebvre
- Inserm U1109, MNT3 team, Strasbourg, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Joël Lacroute
- Inserm U1109, MNT3 team, Strasbourg, France; Université de Strasbourg, Strasbourg, France; Department of Gastroenterology, CHRU Hautepierre, Strasbourg, France
| | | | | | - Hervé M Blottière
- INRA, UMR1319, Jouy-en-Josas, France; AgroParisTech, UMR Micalis, Jouy-en-Josas, France
| | - Bernard Duclos
- Department of Gastroenterology, CHRU Hautepierre, Strasbourg, France
| | - Christiane Arnold
- Inserm U1109, MNT3 team, Strasbourg, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Thomas Hussenet
- Inserm U1109, MNT3 team, Strasbourg, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Joseph Hemmerlé
- Université de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France; Inserm U1121, Strasbourg, France
| | - Donald Gullberg
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Michèle Kedinger
- Inserm U1109, MNT3 team, Strasbourg, France; Université de Strasbourg, Strasbourg, France
| | - Lydia Sorokin
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster, Germany
| | - Gertraud Orend
- Inserm U1109, MNT3 team, Strasbourg, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Patricia Simon-Assmann
- Inserm U1109, MNT3 team, Strasbourg, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
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17
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Tréton X, Pedruzzi E, Guichard C, Ladeiro Y, Sedghi S, Vallée M, Fernandez N, Bruyère E, Woerther PL, Ducroc R, Montcuquet N, Freund JN, Van Seuningen I, Barreau F, Marah A, Hugot JP, Cazals-Hatem D, Bouhnik Y, Daniel F, Ogier-Denis E. Combined NADPH oxidase 1 and interleukin 10 deficiency induces chronic endoplasmic reticulum stress and causes ulcerative colitis-like disease in mice. PLoS One 2014; 9:e101669. [PMID: 25014110 PMCID: PMC4090121 DOI: 10.1371/journal.pone.0101669] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 06/10/2014] [Indexed: 12/20/2022] Open
Abstract
Ulcerative colitis (UC) is a chronic inflammatory bowel disease affecting the rectum which progressively extents. Its etiology remains unknown and the number of treatments available is limited. Studies of UC patients have identified an unbalanced endoplasmic reticulum (ER) stress in the non-inflamed colonic mucosa. Animal models with impaired ER stress are sensitive to intestinal inflammation, suggesting that an unbalanced ER stress could cause inflammation. However, there are no ER stress-regulating strategies proposed in the management of UC partly because of the lack of relevant preclinical model mimicking the disease. Here we generated the IL10/Nox1dKO mouse model which combines immune dysfunction (IL-10 deficiency) and abnormal epithelium (NADPH oxidase 1 (Nox1) deficiency) and spontaneously develops a UC-like phenotype with similar complications (colorectal cancer) than UC. Our data identified an unanticipated combined role of IL10 and Nox1 in the fine-tuning of ER stress responses in goblet cells. As in humans, the ER stress was unbalanced in mice with decreased eIF2α phosphorylation preceding inflammation. In IL10/Nox1dKO mice, salubrinal preserved eIF2α phosphorylation through inhibition of the regulatory subunit of the protein phosphatase 1 PP1R15A/GADD34 and prevented colitis. Thus, this new experimental model highlighted the central role of epithelial ER stress abnormalities in the development of colitis and defined the defective eIF2α pathway as a key pathophysiological target for UC. Therefore, specific regulators able to restore the defective eIF2α pathway could lead to the molecular remission needed to treat UC.
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Affiliation(s)
- Xavier Tréton
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Service de Gastroentérologie et d'Assistance Nutritive, PMAD Hôpital Beaujon, Clichy la Garenne, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Eric Pedruzzi
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Cécile Guichard
- Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; INSERM, UMRS871, Centre Biomédical des Cordeliers, Paris, France
| | - Yannick Ladeiro
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Shirin Sedghi
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Mélissa Vallée
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Neike Fernandez
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Emilie Bruyère
- INSERM, UMR837, Team 5 «Mucins, epithelial differentiation and carcinogenesis», Jean-Pierre Aubert Research Center, Lille, France
| | | | - Robert Ducroc
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Nicolas Montcuquet
- INSERM, U989, Université Paris-Descartes, Necker, Paris, France; Université Paris Descartes, Faculté de Médecine René Descartes, Paris, France
| | | | - Isabelle Van Seuningen
- INSERM, UMR837, Team 5 «Mucins, epithelial differentiation and carcinogenesis», Jean-Pierre Aubert Research Center, Lille, France
| | - Frédérick Barreau
- Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France; INSERM, U843 Hôpital R. Debré, Paris, France
| | - Assiya Marah
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Service de Gastroentérologie et d'Assistance Nutritive, PMAD Hôpital Beaujon, Clichy la Garenne, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Jean-Pierre Hugot
- Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France; INSERM, U843 Hôpital R. Debré, Paris, France
| | - Dominique Cazals-Hatem
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France; Service d'Anatomo-Pathologie, Hôpital Beaujon, Clichy, France
| | - Yoram Bouhnik
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Service de Gastroentérologie et d'Assistance Nutritive, PMAD Hôpital Beaujon, Clichy la Garenne, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Fanny Daniel
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
| | - Eric Ogier-Denis
- INSERM, UMRS1149, Team «Physiopathology of Inflammatory Bowel Diseases», Centre de Recherche sur l'Inflammation, Paris, France; Université Paris-Diderot Sorbonne Paris-Cité, Paris, France; Laboratory of Excellence Labex INFLAMEX, PRES Paris Sorbonne Cité, France
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Barreau F, Hugot JP. Intestinal barrier dysfunction triggered by invasive bacteria. Curr Opin Microbiol 2014; 17:91-8. [PMID: 24440560 DOI: 10.1016/j.mib.2013.12.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 12/16/2013] [Accepted: 12/17/2013] [Indexed: 12/31/2022]
Abstract
The ability to control uptake across the mucosa and to protect the gut from harmful substances present in the lumen is defined as intestinal barrier function. Two routes are usually distinguished for transepithelial transport. The paracellular route allows the passage of ions and small molecules and is mainly regulated by tight junctions (TJ). The transcellular route concerns large molecules or small particles (including bacteria) and is mediated by cell endocytosis and intracellular vesicular traffic. Enteropathogenic bacteria increase the transcellular permeability, especially in the follicle-associated epithelium. They also modulate TJ opening via the redistribution of TJ proteins and the activation of the myosin light chain kinase (MLCK). This review focuses on the molecular mechanisms involved in the bacteria-induced barrier defect and briefly discusses their consequences in human diseases.
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Affiliation(s)
- F Barreau
- Université Paris-Diderot Sorbonne Paris-Cité, UMR 843, F-75018 Paris, France; INSERM, UMR 843, F-75018 Paris, France; Labex inflamex, F-75018 Paris, France; INSERM, UMR 1043, Centre de Physiopathologie de Toulouse, Université de Toulouse, France.
| | - J P Hugot
- Université Paris-Diderot Sorbonne Paris-Cité, UMR 843, F-75018 Paris, France; INSERM, UMR 843, F-75018 Paris, France; Labex inflamex, F-75018 Paris, France; Assistance Publique Hôpitaux de Paris, Hôpital Robert Debré, F-75019 Paris, France.
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Petit CSV, Barreau F, Besnier L, Gandille P, Riveau B, Chateau D, Roy M, Berrebi D, Svrcek M, Cardot P, Rousset M, Clair C, Thenet S. Requirement of cellular prion protein for intestinal barrier function and mislocalization in patients with inflammatory bowel disease. Gastroenterology 2012; 143:122-32.e15. [PMID: 22446194 DOI: 10.1053/j.gastro.2012.03.029] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 03/12/2012] [Accepted: 03/13/2012] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS Cell adhesion is one function regulated by cellular prion protein (PrP(c)), a ubiquitous, glycosylphosphatidylinositol-anchored glycoprotein. PrP(c) is located in cell-cell junctions and interacts with desmosome proteins in the intestinal epithelium. We investigated its role in intestinal barrier function. METHODS We analyzed permeability and structure of cell-cell junctions in intestine tissues from PrP(c) knockout (PrP(c-/-)) and wild-type mice. PrP(c) expression was knocked down in cultured human Caco-2/TC7 enterocytes using small hairpin RNAs. We analyzed colon samples from 24 patients with inflammatory bowel disease (IBD). RESULTS Intestine tissues from PrP(c-/-) mice had greater paracellular permeability than from wild-type mice (105.9 ± 13.4 vs 59.6 ± 10.1 mg/mL fluorescein isothiocyanate-dextran flux; P < .05) and impaired intercellular junctions. PrP(c-/-) mice did not develop spontaneous disease but were more sensitive than wild-type mice to induction of colitis with dextran sulfate (32% mortality vs 4%, respectively; P = .0033). Such barrier defects were observed also in Caco-2/TC7 enterocytes following PrP(c) knockdown; the cells had increased paracellular permeability (1.5-fold over 48 hours; P < .001) and reduced transepithelial electrical resistance (281.1 ± 4.9 vs 370.6 ± 5.7 Ω.cm(2); P < .001). Monolayer shape and cell-cell junctions were altered in cultures of PrP(c) knockdown cells; levels of E-cadherin, desmoplakin, plakoglobin, claudin-4, occludin, zonula occludens 1, and tricellulin were decreased at cell contacts. Cell shape and junctions were restored on PrP(c) re-expression. Levels of PrP(c) were decreased at cell-cell junctions in colonic epithelia from patients with Crohn's disease or ulcerative colitis. CONCLUSIONS PrP(c) regulates intestinal epithelial cell-cell junctions and barrier function. Its localization is altered in colonic epithelia from patients with IBD, supporting the concept that disrupted barrier function contributes to this disorder.
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Affiliation(s)
- Constance S V Petit
- Centre de Recherche des Cordeliers, Université Pierre et Marie Curie-Paris 6, Paris, France
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Thachil E, Hugot JP, Arbeille B, Paris R, Grodet A, Peuchmaur M, Codogno P, Barreau F, Ogier-Denis E, Berrebi D, Viala J. Abnormal activation of autophagy-induced crinophagy in Paneth cells from patients with Crohn's disease. Gastroenterology 2012; 142:1097-1099.e4. [PMID: 22285936 DOI: 10.1053/j.gastro.2012.01.031] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Revised: 01/10/2012] [Accepted: 01/15/2012] [Indexed: 01/07/2023]
Abstract
Autophagy-related 16 like-1 (ATG16L-1), immunity-related GTPase-M (IRGM), and nucleotide-binding oligomerization domain-containing 2 (NOD2) regulate autophagy, and variants in these genes have been associated with predisposition to Crohn's disease (CD). However, little is known about the role of autophagy in CD. Intestinal biopsies from untreated pediatric patients with CD, celiac disease, or ulcerative colitis were analyzed by immunohistochemistry and electron microscopy. We observed that autophagy was specifically activated in Paneth cells from patients with CD, independently of mucosal inflammation or disease-associated variants of ATG16L1 or IRGM. In these cells, activation of autophagy was associated with a significant decrease in number of secretory granules and features of crinophagy. These observations might account for the disorganization of secretory granules previously reported in Paneth cells from patients with CD.
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Mondot S, Barreau F, Al Nabhani Z, Dussaillant M, Le Roux K, Doré J, Leclerc M, Hugot JP, Lepage P. Altered gut microbiota composition in immune-impaired Nod2(-/-) mice. Gut 2012; 61:634-5. [PMID: 21868489 DOI: 10.1136/gutjnl-2011-300478] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Abstract
The gut-associated lymphoid tissue (GALT) consists of isolated or aggregated lymphoid follicles forming Peyer's patches (PPs). By their ability to transport luminal antigens and bacteria, PPs can be considered as the immune sensors of the intestine. PPs functions like induction of immune tolerance or defense against pathogens result from the complex interplay between immune cells located in the lymphoid follicles and the follicle-associated epithelium. This crosstalk seems to be regulated by pathogen recognition receptors, especially Nod2. Although TLR exerts a limited role in PP homeotasis, Nod2 regulates the number, size, and T-cell composition of PPs, in response to the gut flora. In turn, CD4+ T-cells present in the PP are able to modulate the paracellular and transcellular permeabilities. Two human disorders, Crohn's disease and graft-versus-host disease are thought to be driven by an abnormal response toward the commensal flora. They have been associated with NOD2 mutations and PP dysfunction.
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Affiliation(s)
- Camille Jung
- UMR843 INSERM, Université Sorbonne Paris Cité-Diderot, Hôpital Robert Debré, 75019 Paris, France
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Barreau F, Madre C, Meinzer U, Berrebi D, Dussaillant M, Merlin F, Eckmann L, Karin M, Sterkers G, Bonacorsi S, Lesuffleur T, Hugot JP. Nod2 regulates the host response towards microflora by modulating T cell function and epithelial permeability in mouse Peyer's patches. Gut 2010; 59:207-17. [PMID: 19837677 DOI: 10.1136/gut.2008.171546] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nucleotide oligomerisation domain 2 (NOD2) mutations are associated with susceptibility to Crohn's disease and graft-versus-host disease, two human disorders related with dysfunctions of Peyer's patches (PPs). In Nod2(-/-) mice transcellular permeability and bacterial translocation are increased in PPs. In this study, we show that both anti-CD4(+) and anti-interferon gamma (anti-IFNgamma) monoclonal antibodies abrogate this phenotype and reduce the expression of tumour necrosis factor (TNF) receptor 2 and the long isoform of myosin light chain kinase, thus demonstrating that immune T cells influence the epithelial functions. In turn, intraperitoneal injection of ML-7 (a myosin light chain kinase inhibitor) normalises the values of CD4(+) T cells, IFNgamma and TNFalpha. This reciprocal cross-talk is under the control of the gut microflora as shown by the normalisation of all parameters after antibiotic treatment. Toll-like receptor 2 (TLR2) and TLR4 expression were increased in Nod2(-/-) mice under basal conditions and TLR2 and TLR4 agonists induced an increased transcellular permeability in Nod2(+/+) mice. Muramyldipeptide (a Nod2 agonist) or ML-7 was able to reverse this phenomenon. It thus appears that Nod2 modulates the cross-talk between CD4(+) T cells and the epithelium recovering PP and that it downregulates the pro-inflammatory effect driven by the ileal microflora, likely by inhibiting the TLR pathways.
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Barreau F, Salvador-Cartier C, Houdeau E, Bueno L, Fioramonti J. Long-term alterations of colonic nerve-mast cell interactions induced by neonatal maternal deprivation in rats. Gut 2008; 57:582-90. [PMID: 18194988 DOI: 10.1136/gut.2007.126680] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Neonatal maternal deprivation induces colonic alterations in adult rats, such as hypersensitivity to distension or an increase in paracellular permeability, characteristics of irritable bowel syndrome (IBS) patients. Recent studies described neuroimmune alterations in the colonic mucosa of IBS patients. METHODS Male Wistar rats were submitted to maternal deprivation for 3 h daily during postnatal days 2-14, and were sacrificed at 4 or 12 weeks of age. Control pups were left undisturbed with their dam. RESULTS Colonic mast cell hyperplasia was observed at 4 and 12 weeks in maternally deprived rats, and was associated with an increase in protease content. Mucosal nerve fibre density assessed by protein gene product (PGP) 9.5 immunoreactivity was increased at 12 weeks but not at 4 weeks, while calcitonin gene-related protein (CGRP)-immunoreactive fibres remain constant. Synaptogenesis assessed by synaptophysin immunostaining was increased at 4 weeks but not at 12 weeks. The number of mast cells in close proximity to PGP 9.5- or CGRP-immunoreactive fibres was greater at both 4 and 12 weeks. Expression of neurokinin NK(1) receptors in the spinal cord was enhanced at 12 weeks. No significant change in total mast cell number, PGP 9.5 immunoreactivity and mast cells associated with PGP 9.5-immunoreactive fibres was observed in the jejunum. Treatment of pups with anti-nerve growth factor (NGF) antibodies abolished the increases in synaptogenesis and in the number of mast cells in close proximity to nerve fibres observed 4 weeks after maternal deprivation. CONCLUSIONS Neonatal maternal deprivation induces closer association of colonic mast cells with nerves, which is similar to that seen in IBS patients. NGF is a possible mediator of this effect.
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Affiliation(s)
- F Barreau
- Neurogastroenterology and Nutrition Unit, INRA, 180 Chemin de Tournefeuille, BP 3, F-31931 Toulouse cedex 9, France
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Barreau F, Meinzer U, Chareyre F, Berrebi D, Niwa-Kawakita M, Dussaillant M, Foligne B, Ollendorff V, Heyman M, Bonacorsi S, Lesuffleur T, Sterkers G, Giovannini M, Hugot JP. CARD15/NOD2 is required for Peyer's patches homeostasis in mice. PLoS One 2007; 2:e523. [PMID: 17565376 PMCID: PMC1885825 DOI: 10.1371/journal.pone.0000523] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Accepted: 04/27/2007] [Indexed: 12/16/2022] Open
Abstract
Background CARD15/NOD2 mutations are associated with susceptibility to Crohn's Disease (CD) and Graft Versus Host Disease (GVHD). CD and GVHD are suspected to be related with the dysfunction of Peyer's patches (PP) and isolated lymphoid follicles (LFs). Using a new mouse model invalidated for Card15/Nod2 (KO), we thus analysed the impact of the gene in these lymphoid formations together with the development of experimental colitis. Methodology/Principal Findings At weeks 4, 12 and 52, the numbers of PPs and LFs were higher in KO mice while no difference was observed at birth. At weeks 4 and 12, the size and cellular composition of PPs were analysed by flow cytometry and immunohistochemistry. PPs of KO mice were larger with an increased proportion of M cells and CD4+ T-cells. KO mice were also characterised by higher concentrations of TNFα, IFNγ, IL12 and IL4 measured by ELISA. In contrast, little differences were found in the PP-free ileum and the spleen of KO mice. By Ussing chamber experiments, we found that this PP phenotype is associated with an increased of both paracellular permeability and yeast/bacterial translocation. Finally, KO mice were more susceptible to the colitis induced by TNBS. Conclusions Card15/Nod2 deficiency induces an abnormal development and function of the PPs characterised by an exaggerated immune response and an increased permeability. These observations provide a comprehensive link between the molecular defect and the Human CARD15/NOD2 associated disorders: CD and GVHD.
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Affiliation(s)
- Frédérick Barreau
- U843, INSERM, Paris, France
- UMR-S843, Université Paris Diderot, Paris, France
| | - Ulrich Meinzer
- U843, INSERM, Paris, France
- UMR-S843, Université Paris Diderot, Paris, France
- Service de Gastroentérologie, Hôpital R. Debré, AP-HP, Paris, France
| | - Fabrice Chareyre
- Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
- U674, INSERM, Paris, France
| | - Dominique Berrebi
- EA3102, Université Paris Diderot, Paris, France
- Service d'Anatomie Pathologique, Institut Pasteur de Lille, Lille, France
| | - Michiko Niwa-Kawakita
- Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
- U674, INSERM, Paris, France
| | - Monique Dussaillant
- U843, INSERM, Paris, France
- UMR-S843, Université Paris Diderot, Paris, France
| | - Benoit Foligne
- Laboratoire des Bactéries Lactiques et Immunité des Muqueuses, Institut Pasteur de Lille, Lille, France
| | - Vincent Ollendorff
- IMRN and UMR 1111 INRA, Faculté Saint-Jérôme, Université Paul Cézanne, Marseille, France
| | - Martine Heyman
- U793, INSERM, Paris, France
- IFR94, Université Paris Descartes, Paris, France
| | - Stéphane Bonacorsi
- EA3105, Université Paris Diderot, Paris, France
- Service de Microbiologie, Hôpital R. Debré, AP-HP, Paris, France
| | - Thecla Lesuffleur
- U843, INSERM, Paris, France
- UMR-S843, Université Paris Diderot, Paris, France
| | | | - Marco Giovannini
- Institut Universitaire d'Hématologie, Université Paris Diderot, Paris, France
- U674, INSERM, Paris, France
| | - Jean-Pierre Hugot
- U843, INSERM, Paris, France
- UMR-S843, Université Paris Diderot, Paris, France
- Service de Gastroentérologie, Hôpital R. Debré, AP-HP, Paris, France
- * To whom correspondence should be addressed. E-mail:
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Abstract
BACKGROUND Stressful events in the early period of life (for example, maternal deprivation) have been shown to modify adult immune and gastrointestinal tract functions. The present study aimed to establish whether maternal deprivation affects colonic epithelial barrier and the development of an experimental colitis in adult rats. METHODS Male Wistar rat pups were separated during postnatal days 2-14 or left undisturbed with their dam. At 12 weeks of age, we assessed colonic paracellular permeability, bacterial translocation, myeloperoxidase (MPO) activity, mucosal mast cell density, cytokine (interleukin (IL)-1 beta, IL-2, IL-4, IL-10, and interferon gamma (IFN-gamma)) mRNA expression, and macroscopic damage. Total gut permeability, MPO activity, and macroscopic damage were also assessed four days after intracolonic administration of 2,4,6-trinitrobenzenesulphonic acid (TNBS). RESULTS Maternal deprivation triggered a significant increase in colonic permeability associated with bacterial translocation into the mesenteric lymph nodes, liver, and spleen. These alterations were associated with some macroscopic damage and an increase in colonic MPO activity, mucosal mast cell density, and cytokine mRNA expression. Intracolonic infusion of TNBS induced a significantly higher inflammatory reaction in separated animals, as judged by enhanced MPO colonic levels, total gut permeability, and macroscopic lesions. CONCLUSIONS Maternal deprivation promotes long term alterations in the colonic epithelial barrier associated with an exaggerated immune response to an external immune stimulus. This suggests a role for early psychological factors in the regulation of colonic mucosal barrier in later life.
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Affiliation(s)
- F Barreau
- Neurogastroenterology and Nutrition Unit, Institut National de la Recherche Agronomique, Toulouse, France
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Rosztóczy A, Fioramonti J, Jármay K, Barreau F, Wittmann T, Buéno L. Influence of sex and experimental protocol on the effect of maternal deprivation on rectal sensitivity to distension in the adult rat. Neurogastroenterol Motil 2003; 15:679-86. [PMID: 14651604 DOI: 10.1046/j.1350-1925.2003.00451.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Neonatal maternal separation induces visceral hyperalgesia before and after stress in male rats. This study compares the effects on sensitivity to rectal distension in adult male and female rats, using two protocols of deprivation. Between postnatal days 1 and 14, maternal deprivation was performed for 2 h per day according to a protocol of type M (removal of all pups from home cage) or type P (separation of half of littermates). Visceral sensitivity was assessed at 12 weeks of age by the number of abdominal contractions induced by rectal distension before and after restraint stress. Calcitonin gene-related peptide (CGRP) was identified in the rectal wall by immunohistochemistry. In basal conditions, both separation protocols induced hyperalgesia, that was greater after type M than type P, and in females than in males for type P separation. Acute restraint stress induced hyperalgesia in control females only, and this effect was similarly enhanced by both type P and M separation. No difference was found between controls and deprived rats in rectal CGRP immunoreactivity which was greater in females and increased after rectal distension. These results indicate that long-term visceral hyperalgesia depends upon the type of maternal deprivation and that females are more sensitive than males.
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Affiliation(s)
- A Rosztóczy
- Neurogastroenterology and Nutrition Unit, INRA, Toulouse, France
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Gabrielides C, Barreau F. A vertebrate interstitial collagenase inhibitor from bovine scapular cartilage: purification and characterization. Biochim Biophys Acta 1987; 924:238-47. [PMID: 3030445 DOI: 10.1016/0304-4165(87)90092-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A collagenase inhibitor was purified from bovine cartilage by a combination of gel filtration, ion exchange, concanavalin A-Sepharose affinity chromatography, and elution from preparative sodium dodecyl sulfate-polyacrylamide gels. The inhibitor was purified 370-fold and migrated as a single polypeptide with an Mr of 19,000 on SDS-polyacrylamide gels. It stained positively for carbohydrate with periodic acid-Schiff's reagent and bound to lectins, indicating that it is a glycoprotein. The inhibitory activity was stable to heating up to 60 degrees C and between pH 4 and 10. The inhibition of collagenase by the cartilage inhibitor could not be reversed by trypsin or mersalyl. The inhibitory activity did not require the presence of free sulfhydryl groups, and it could be removed from the cartilage extract by incubating with native collagen, suggesting that the inhibitor binds to collagen. The cartilage inhibitor was effective against human and mouse interstitial collagenases, but it did not inhibit trypsin or bacterial collagenase.
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