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Ovarian Cancer and Glutamine Metabolism. Int J Mol Sci 2023; 24:ijms24055041. [PMID: 36902470 PMCID: PMC10003179 DOI: 10.3390/ijms24055041] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 02/24/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
Cancer cells are known to have a distinct metabolic profile and to exhibit significant changes in a variety of metabolic mechanisms compared to normal cells, particularly glycolysis and glutaminolysis, in order to cover their increased energy requirements. There is mounting evidence that there is a link between glutamine metabolism and the proliferation of cancer cells, demonstrating that glutamine metabolism is a vital mechanism for all cellular processes, including the development of cancer. Detailed knowledge regarding its degree of engagement in numerous biological processes across distinct cancer types is still lacking, despite the fact that such knowledge is necessary for comprehending the differentiating characteristics of many forms of cancer. This review aims to examine data on glutamine metabolism and ovarian cancer and identify possible therapeutic targets for ovarian cancer treatment.
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Faucher P, Dries A, Mousset PY, Leboyer M, Dore J, Beracochea D. Synergistic effects of Lacticaseibacillus rhamnosus GG, glutamine, and curcumin on chronic unpredictable mild stress-induced depression in a mouse model. Benef Microbes 2022; 13:253-264. [PMID: 35786408 DOI: 10.3920/bm2021.0188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The microbiota-gut-brain axis is important in anxiety-depressive disorders. These conditions are associated with dysbiosis of the intestinal microbiota, intestinal hyperpermeability and an increase in circulating markers of inflammation and oxidative stress. They are also associated with a deregulation of the glutamine-glutamate-γ-aminobutyric acid cycle, with impairment of the excitatory/inhibitory balance in the brain. Our aim was to examine the impact of chronic treatment with the probiotic organism Lacticaseibacillus rhamnosus GG, alone or in combination with glutamine and curcumin, in a validated model of anxiety-depressive disorder in mice. Six-month-old mice (n=144) were exposed to chronic unpredictable mild stress (CUMS) stimulation for 3 weeks and emotional disturbances were assessed using two tests assessing anxiety (elevated plus maze test) and depressive-like behaviour (tail suspension test). After discontinuation of CUMS, mice were force-fed once-daily with curcumin, glutamine and probiotic alone or in combination for 21 consecutive days. Emotional reactivity was assessed in two separate behavioural tests: open field test and forced swim test. The outcomes of the interventions were compared with those induced by acute intraperitoneal administration of clomipramine, one of the major tricyclic antidepressants used in humans. Two independent sets of experiment were performed in this study, in order to evaluate the effects of two different formulations based on the utilisation of the probiotic L. rhamnosus GG in its live or inactivated form. CUMS led to an impairment of the emotional state of 6-month-old mice. However, chronic treatment with a combination of glutamine, curcumin and L. rhamnosus GG rescued the anxiety and depressive-like phenotype with an efficiency similar to clomipramine. A synergistic effect of the three compounds was observed, suggesting that simultaneous action on different targets is a relevant approach for the management of anxiety-depressive disorders.
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Affiliation(s)
- P Faucher
- GYNOV, 11 rue du Commandant Arnoult, 33000 Bordeaux, France
| | - A Dries
- GYNOV, 11 rue du Commandant Arnoult, 33000 Bordeaux, France
| | - P Y Mousset
- GYNOV, 11 rue du Commandant Arnoult, 33000 Bordeaux, France
| | - M Leboyer
- INSERM U955, Fondation FondaMental, Université Paris Est, 94010 Créteil, France
| | - J Dore
- MGP MetaGénoPolis, INRAE, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - D Beracochea
- INCIA, Université de Bordeaux, UMR CNRS 5287, 33615 Pessac, France
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Exploratory Analysis of Selected Components of the mTOR Pathway Reveals Potentially Crucial Associations with Childhood Malnutrition. Nutrients 2022; 14:nu14081612. [PMID: 35458174 PMCID: PMC9031007 DOI: 10.3390/nu14081612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/13/2022] [Accepted: 03/25/2022] [Indexed: 12/10/2022] Open
Abstract
Dysregulations in the mammalian target of rapamycin (mTOR) pathway are associated with several human anomalies. We aimed to elucidate possible implications for potential aberrations in the mTOR pathway with childhood malnutrition. We analyzed the activity of phospho-mTORC1 and the expressions of several mTOR pathway genes, namely: MTOR, TSC1, LAMTOR2, RPS6K1 and RICTOR from peripheral blood mononuclear cells isolated from venous blood of children suffering from different forms of malnutrition and compared them with those from healthy children. Significant reduction in the phosphorylation of mTORC1 was noted, as well as a decrease in expression of LAMTOR2 gene and increase in TSC1 gene expression were observed between malnourished children in comparison to the healthy children. The deregulation in the activity of the TSC1 and LAMTOR2 gene was significantly associated with all forms of childhood malnutrition. Our findings provide key insights into possible down-modulation in the overall activity of the mTOR pathway in childhood malnutrition. Further studies focusing on the analysis of a multitude of components involved in the mTOR pathway both at the gene and protein expression levels are required for conclusive evidence for the aforementioned proposition.
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Lerner A, Benzvi C. Microbial Transglutaminase Is a Very Frequently Used Food Additive and Is a Potential Inducer of Autoimmune/Neurodegenerative Diseases. TOXICS 2021; 9:toxics9100233. [PMID: 34678929 PMCID: PMC8537092 DOI: 10.3390/toxics9100233] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/14/2021] [Accepted: 09/22/2021] [Indexed: 12/12/2022]
Abstract
Microbial transglutaminase (mTG) is a heavily used food additive and its industrial transamidated complexes usage is rising rapidly. It was classified as a processing aid and was granted the GRAS (generally recognized as safe) definition, thus escaping full and thorough toxic and safety evaluations. Despite the manufacturers claims, mTG or its cross-linked compounds are immunogenic, pathogenic, proinflammatory, allergenic and toxic, and pose a risk to public health. The enzyme is a member of the transglutaminase family and imitates the posttranslational modification of gluten, by the tissue transglutaminase, which is the autoantigen of celiac disease. The deamidated and transamidated gliadin peptides lose their tolerance and induce the gluten enteropathy. Microbial transglutaminase and its complexes increase intestinal permeability, suppresses enteric protective pathways, enhances microbial growth and gliadin peptide’s epithelial uptake and can transcytose intra-enterocytically to face the sub-epithelial immune cells. The present review updates on the potentially detrimental side effects of mTG, aiming to interest the scientific community, induce food regulatory authorities’ debates on its safety, and protect the public from the mTG unwanted effects.
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Affiliation(s)
- Aaron Lerner
- Chaim Sheba Medical Center, The Zabludowicz Research Center for Autoimmune Diseases, Tel Hashomer 5262000, Israel;
- Ariel University, Ariel 40700, Israel
- Correspondence: ; Tel.: +972-525-919484
| | - Carina Benzvi
- Chaim Sheba Medical Center, The Zabludowicz Research Center for Autoimmune Diseases, Tel Hashomer 5262000, Israel;
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The clinical impacts of early using glutamine/arginine enriched high protein density formula at trophic dose in intolerant enteral nutrition cachectic hypoalbuminemic hospitalized patients. ACTA ACUST UNITED AC 2021; 58:153-160. [PMID: 32449700 DOI: 10.2478/rjim-2020-0014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Indexed: 11/20/2022]
Abstract
BACKGROUND We sought to evaluate the clinical impacts of the early administration of trophic doses of a glutamine/arginine enriched enteral nutrition formula (ENF) with a high protein density to cachectic hypoalbuminemic hospitalized patients intolerant to enteral nutrition. METHODS A retrospective analysis was conducted using the nutritional and non-nutritional data of patients admitted to our institution from April 2017 through August 2019. Patients who died or were discharged before completing ≥1 weeks of hospital admission, or those whose data could not be obtained were excluded. Among other variables, percent changes in serum albumin levels (%∆ALB), C - reactive protein (CRP) and their ratios were expressed as Mean ± SD using the Independent Samples T-test, while categorical variables were expressed as numbers with percentages by using χ2 test. Two tested groups were determined based on the use of ENF: Group I received trophic doses of ENF, while Group II received no enteral nutrition. RESULTS The overall hospital length of stay (LOS) and overall 28-day hospital mortality were significantly lower in Group I when compared with Group II with Means ± SDs of (11.32 ± 2.19 days vs 23.49 ± 4.33 days) and (13.13% vs. 28.16%), respectively. Also, significantly higher (%∆ALB) for Group I compared with group II (43.48% ± 7.89% vs. 33.45% ± 6.18%), respectively was observed. CONCLUSION In malnourished hypoalbuminemic patients suffering from feeding intolerance, early trophic administration of glutamine/arginine enriched high protein density ENF was well tolerated and may be associated with increased plasma albumin levels, reduced LOS, and overall 28-day mortality, and hence may be considered in such patients.
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Lerner A, Matthias T. Processed Food Additive Microbial Transglutaminase and Its Cross-Linked Gliadin Complexes Are Potential Public Health Concerns in Celiac Disease. Int J Mol Sci 2020; 21:E1127. [PMID: 32046248 PMCID: PMC7037116 DOI: 10.3390/ijms21031127] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/04/2020] [Accepted: 02/05/2020] [Indexed: 12/14/2022] Open
Abstract
Microbial transglutaminase (mTG) is a survival factor for microbes, but yeasts, fungi, and plants also produce transglutaminase. mTG is a cross-linker that is heavily consumed as a protein glue in multiple processed food industries. According to the manufacturers' claims, microbial transglutaminase and its cross-linked products are safe, i.e., nonallergenic, nonimmunogenic, and nonpathogenic. The regulatory authorities declare it as "generally recognized as safe" for public users. However, scientific observations are accumulating concerning its undesirable effects on human health. Functionally, mTG imitates its family member, tissue transglutaminase, which is the autoantigen of celiac disease. Both these transglutaminases mediate cross-linked complexes, which are immunogenic in celiac patients. The enzyme enhances intestinal permeability, suppresses mechanical (mucus) and immunological (anti phagocytic) enteric protective barriers, stimulates luminal bacterial growth, and augments the uptake of gliadin peptide. mTG and gliadin molecules are cotranscytosed through the enterocytes and deposited subepithelially. Moreover, mucosal dendritic cell surface transglutaminase induces gliadin endocytosis, and the enzyme-treated wheat products are immunoreactive in CD patients. The present review summarizes and updates the potentially detrimental effects of mTG, aiming to stimulate scientific and regulatory debates on its safety, to protect the public from the enzyme's unwanted effects.
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Affiliation(s)
- Aaron Lerner
- AESKU.KIPP Institute, Mikroforum Ring 2, 55234 Wendelsheim, Germany;
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Nobis S, Achamrah N, Goichon A, L'Huillier C, Morin A, Guérin C, Chan P, do Rego JL, do Rego JC, Vaudry D, Déchelotte P, Belmonte L, Coëffier M. Colonic Mucosal Proteome Signature Reveals Reduced Energy Metabolism and Protein Synthesis but Activated Autophagy during Anorexia-Induced Malnutrition in Mice. Proteomics 2018; 18:e1700395. [PMID: 29938906 DOI: 10.1002/pmic.201700395] [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: 10/25/2017] [Revised: 06/12/2018] [Indexed: 12/18/2022]
Abstract
Anorexia nervosa is an eating disorder often associated with intestinal disorders. To explore the underlying mechanisms of these disorders, the colonic proteome was evaluated during activity-based anorexia. Female C57Bl/6 mice were randomized into three groups: Control, Limited Food Access (LFA) and Activity-Based Anorexia (ABA). LFA and ABA mice had a progressive limited access to food but only ABA mice had access to an activity wheel. On colonic mucosal protein extracts, a 2D PAGE-based comparative proteomic analysis was then performed and differentially expressed proteins were identified by LC-ESI-MS/MS. Twenty-seven nonredundant proteins that were differentially expressed between Control, LFA, and ABA groups were identified. ABA mice exhibited alteration of several mitochondrial proteins involved in energy metabolism such as dihydrolipoyl dehydrogenase and 3-mercaptopyruvate sulfurtransferase. In addition, a downregulation of mammalian target of rapamycin (mTOR) pathway was observed leading, on the one hand, to the inhibition of protein synthesis, evaluated by puromycin incorporation and mediated by the increased phosphorylation of eukaryotic elongation factor 2, and on the other hand, to the activation of autophagy, assessed by the increase of the marker of autophagy, form LC3-phosphatidylethanolamine conjugate/Cytosolic form of Microtubule-associated protein 1A/1B light chain 3 (LC3II/LC3I) ratio. Colonic mucosal proteome is altered during ABA suggesting a downregulation of energy metabolism. A decrease of protein synthesis and an activation of autophagy were also observed mediated by mTOR pathway.
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Affiliation(s)
- Séverine Nobis
- INSERM Unit 1073, UNIROUEN, Normandie University, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France
| | - Najate Achamrah
- INSERM Unit 1073, UNIROUEN, Normandie University, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France.,Nutrition Department, Rouen University Hospital, 76000, Rouen, France
| | - Alexis Goichon
- INSERM Unit 1073, UNIROUEN, Normandie University, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France
| | - Clément L'Huillier
- INSERM Unit 1073, UNIROUEN, Normandie University, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France
| | - Aline Morin
- INSERM Unit 1073, UNIROUEN, Normandie University, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France
| | - Charlène Guérin
- INSERM Unit 1073, UNIROUEN, Normandie University, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France
| | - Philippe Chan
- Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France.,Platform in proteomics PISSARO, UNIROUEN, Normandie University, 76000, Rouen, France
| | - Jean Luc do Rego
- Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France.,Animal Behaviour Platform SCAC, UNIROUEN, Normandie University, 76000, Rouen, France
| | - Jean Claude do Rego
- Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France.,Animal Behaviour Platform SCAC, UNIROUEN, Normandie University, 76000, Rouen, France
| | - David Vaudry
- Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France.,Platform in proteomics PISSARO, UNIROUEN, Normandie University, 76000, Rouen, France.,INSERM Unit 1239, UNIROUEN, Normandie University, 76000, Rouen, France
| | - Pierre Déchelotte
- INSERM Unit 1073, UNIROUEN, Normandie University, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France.,Nutrition Department, Rouen University Hospital, 76000, Rouen, France
| | - Liliana Belmonte
- INSERM Unit 1073, UNIROUEN, Normandie University, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France.,Nutrition Department, Rouen University Hospital, 76000, Rouen, France
| | - Moïse Coëffier
- INSERM Unit 1073, UNIROUEN, Normandie University, 76000, Rouen, France.,Institute for Research and Innovation in Biomedicine, UNIROUEN, Normandie University, 76000, Rouen, France.,Nutrition Department, Rouen University Hospital, 76000, Rouen, France
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Ge L, Chen W, Cao W, Liu G, Zhang Q, Zhuang J, Zhang M, Yang J, Guo S, Zhao X, Guo H. GCN2 is a potential prognostic biomarker for human papillary renal cell carcinoma. Cancer Biomark 2018; 22:395-403. [PMID: 29865032 DOI: 10.3233/cbm-170922] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Liyuan Ge
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
- Department of Urology, Peking University Third Hospital, Beijing, China
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
| | - Wei Chen
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
| | - Wenmin Cao
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
| | - Guangxiang Liu
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
| | - Qing Zhang
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
| | - Junlong Zhuang
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
| | - Mingxin Zhang
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
| | - Jun Yang
- Department of Pathology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Suhan Guo
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
| | - Xiaozhi Zhao
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
| | - Hongqian Guo
- Department of Urology, Drum Tower Hospital, Medical School of Nanjing University, Institute of Urology, Nanjing University, Nanjing, Jiangsu, China
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Achamrah N, Déchelotte P, Coëffier M. Glutamine and the regulation of intestinal permeability: from bench to bedside. Curr Opin Clin Nutr Metab Care 2017; 20:86-91. [PMID: 27749689 DOI: 10.1097/mco.0000000000000339] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE OF REVIEW Glutamine is the most abundant amino acid in plasma and plays a key role in maintaining the integrity of intestinal barrier. RECENT FINDINGS Experimental studies showed that glutamine is able to modulate intestinal permeability and tight junction protein expression in several conditions. Recent articles underlined its putative beneficial role in gastrointestinal disorders such as irritable bowel syndrome. SUMMARY Glutamine is a major nutrient to maintain intestinal barrier function in animals and humans. Depletion of glutamine results in villus atrophy, decreased expression of tight junction proteins and increased intestinal permeability. Moreover, glutamine supplementation can improve gut barrier function in several experimental conditions of injury and in some clinical situations. Furthermore, preventive effects of glutamine in experimental models of intestinal injuries have been recently reported. Despite promising data in experimental models, further studies are needed to evaluate glutamine supplementation in clinical practice.
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Affiliation(s)
- Najate Achamrah
- aNormandie Univ bINSERM UMR 1073 'Nutrition, Inflammation and Dysfunction of Gut-brain Axis', University of Rouen cNutrition Department, Rouen University Hospital, Rouen, France
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10
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Bertrand J, Ghouzali I, Guérin C, Bôle-Feysot C, Gouteux M, Déchelotte P, Ducrotté P, Coëffier M. Glutamine Restores Tight Junction Protein Claudin-1 Expression in Colonic Mucosa of Patients With Diarrhea-Predominant Irritable Bowel Syndrome. JPEN J Parenter Enteral Nutr 2016; 40:1170-1176. [DOI: 10.1177/0148607115587330] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 04/21/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Julien Bertrand
- INSERM UMR1073, University of Rouen, Rouen, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France
| | - Ibtissem Ghouzali
- INSERM UMR1073, University of Rouen, Rouen, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France
| | - Charlène Guérin
- INSERM UMR1073, University of Rouen, Rouen, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France
| | - Christine Bôle-Feysot
- INSERM UMR1073, University of Rouen, Rouen, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France
| | - Mélodie Gouteux
- INSERM UMR1073, University of Rouen, Rouen, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France
| | - Pierre Déchelotte
- INSERM UMR1073, University of Rouen, Rouen, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France
- Department of Nutrition, Rouen University Hospital, Rouen, France
| | - Philippe Ducrotté
- INSERM UMR1073, University of Rouen, Rouen, France
- Department of Gastroenterology, Rouen University Hospital, Rouen, France
| | - Moïse Coëffier
- INSERM UMR1073, University of Rouen, Rouen, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, Rouen, France
- Department of Nutrition, Rouen University Hospital, Rouen, France
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Chemopreventive Effect of Dietary Glutamineon Colitis-Associated Colorectal Cancer Is Associated with Modulation of the DEPTOR/mTOR Signaling Pathway. Nutrients 2016; 8:nu8050261. [PMID: 27144580 PMCID: PMC4882674 DOI: 10.3390/nu8050261] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 04/23/2016] [Accepted: 04/26/2016] [Indexed: 02/06/2023] Open
Abstract
Glutamine plays a protective role in colitis and colitis-associated colorectal cancer (CAC); however, the protective mechanisms are largely unknown to date. DEP domain-containing mTOR-interacting protein (DEPTOR)/mammalian Target of Rapamycin (mTOR) signaling plays an important role in carcinogenesis. The present study investigated the potential molecular mechanisms for the protective effect of glutamine in a murine model of azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced CAC. The effects of glutamine on DEPTOR/mTOR signaling and protein light chain 3 (LC3) were evaluated. Administration of glutamine was associated with attenuated development of CAC. Increased expression of DEPTOR and decreased expressions of factors of mTOR signaling, including phospho-mTOR, phospho-STAT3, phospho-Akt, and phospho-S6, were observed in AOM/DSS mice administered glutamine. Furthermore, oral glutamine was associated with increased LC3-II expression in AOM/DSS mice. The present study indicates that regulation of DEPTOR/mTOR signaling may be an important mechanism for glutamine in prevention against the development of CAC. In addition, the chemopreventive effect of dietary glutamine on CAC is, at least in part, associated with the induction of autophagy.
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12
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Bourgoin-Voillard S, Goron A, Seve M, Moinard C. Regulation of the proteome by amino acids. Proteomics 2016; 16:831-46. [DOI: 10.1002/pmic.201500347] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 12/30/2015] [Accepted: 01/12/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Sandrine Bourgoin-Voillard
- Plateforme de Protéomique PROMETHEE; IAB; University Grenoble Alpes; Grenoble France
- Plateforme de Protéomique PROMETHEE, Institut de Biologie et de Pathologie; CHU de Grenoble; Grenoble France
- Plateforme de Protéomique PROMETHEE; IAB; INSERM; Grenoble France
| | - Arthur Goron
- Laboratory of Fundamental and Applied Bioenergetics (LBFA); University Grenoble Alpes; Grenoble France
- Laboratory of Fundamental and Applied Bioenergetics (LBFA); INSERM; Grenoble France
| | - Michel Seve
- Plateforme de Protéomique PROMETHEE; IAB; University Grenoble Alpes; Grenoble France
- Plateforme de Protéomique PROMETHEE, Institut de Biologie et de Pathologie; CHU de Grenoble; Grenoble France
- Plateforme de Protéomique PROMETHEE; IAB; INSERM; Grenoble France
| | - Christophe Moinard
- Laboratory of Fundamental and Applied Bioenergetics (LBFA); University Grenoble Alpes; Grenoble France
- Laboratory of Fundamental and Applied Bioenergetics (LBFA); INSERM; Grenoble France
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Abstract
Glutamine, reviewed extensively in the last century, is a key substrate for the splanchnic bed in the whole body and is a nutrient of particular interest in gastrointestinal research. A marked decrease in the plasma glutamine concentration has recently been observed in neonates and adults during acute illness and stress. Although some studies in newborns have shown parenteral and enteral supplementation with glutamine to be of benefit (by decreasing proteolysis and activating the immune system), clinical trials have not demonstrated prolonged advantages such as reductions in mortality or risk of infections in adults. In addition, glutamine is not able to combat the muscle wasting associated with disease or age-related sarcopenia. Oral glutamine supplementation initiated before advanced age in rats increases gut mass and improves the villus height of mucosa, thereby preventing the gut atrophy encountered in advanced age. Enterocytes from very old rats continuously metabolize glutamine into citrulline, which allowed, for the first time, the use of citrulline as a noninvasive marker of intestinal atrophy induced by advanced age.
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Affiliation(s)
- Dominique Meynial-Denis
- D. Meynial-Denis is with the Unit of Human Nutrition (UNH), French National Institute for Agricultural Research (INRA), Joint Research Unit (UMR) 1019, Center for Research in Human Nutrition (CRNH) Auvergne, Clermont-Ferrand, France.
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14
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Achamrah N, Nobis S, Breton J, Jésus P, Belmonte L, Maurer B, Legrand R, Bôle-Feysot C, Rego JLD, Goichon A, Rego JCD, Déchelotte P, Fetissov SO, Claeyssens S, Coëffier M. Maintaining physical activity during refeeding improves body composition, intestinal hyperpermeability and behavior in anorectic mice. Sci Rep 2016; 6:21887. [PMID: 26906060 PMCID: PMC4764812 DOI: 10.1038/srep21887] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 02/03/2016] [Indexed: 12/18/2022] Open
Abstract
A role of gut-brain axis emerges in the pathophysiology of anorexia nervosa and maintaining adapted physical activity during refeeding remains discussed. We aimed to assess gastrointestinal protein metabolism and investigate the contribution of physical activity during refeeding in C57BL/6 mice with activity-based anorexia (ABA). ABA mice exhibited lower body weight and food intake with increase of lean mass/fat mass ratio and fat oxidation. Colonic permeability was increased in ABA. Ad libitum food access was then restored and ABA group was divided into two subgroups, with access to running wheel (ABA-PA) or not (ABA-NPA). After refeeding, fat free mass was completely restored only in ABA-PA. Colonic permeability was enhanced in ABA-NPA. Finally, muscle kynurenine conversion into kynurenic acid was lower in ABA-NPA who also exhibited altered behavior. Maintaining physical activity during refeeding may thus limit colonic hyperpermeability and improve behavior in anorectic mice.
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Affiliation(s)
- Najate Achamrah
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
- Rouen University Hospital, Nutrition unit, Rouen, France
| | - Séverine Nobis
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
| | - Jonathan Breton
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
| | - Pierre Jésus
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
| | - Liliana Belmonte
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
- Rouen University Hospital, Nutrition unit, Rouen, France
| | - Brigitte Maurer
- Rouen University Hospital, Laboratory of Medical Biochemistry, Rouen, France
| | - Romain Legrand
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
| | - Christine Bôle-Feysot
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
| | - Jean Luc do Rego
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
- Animal Behavior Platform SCAC, University of Rouen, France
| | - Alexis Goichon
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
| | - Jean Claude do Rego
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
- Animal Behavior Platform SCAC, University of Rouen, France
| | - Pierre Déchelotte
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
- Rouen University Hospital, Nutrition unit, Rouen, France
| | - Sergueï O Fetissov
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
| | - Sophie Claeyssens
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
- Rouen University Hospital, Laboratory of Medical Biochemistry, Rouen, France
| | - Moïse Coëffier
- Normandie Univ, INSERM Unit 1073, UR, France
- Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen, France
- Rouen University Hospital, Nutrition unit, Rouen, France
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15
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Yuan L, Sheng X, Willson AK, Roque DR, Stine JE, Guo H, Jones HM, Zhou C, Bae-Jump VL. Glutamine promotes ovarian cancer cell proliferation through the mTOR/S6 pathway. Endocr Relat Cancer 2015; 22:577-91. [PMID: 26045471 PMCID: PMC4500469 DOI: 10.1530/erc-15-0192] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/04/2015] [Indexed: 12/17/2022]
Abstract
Glutamine is one of the main nutrients used by tumor cells for biosynthesis. Therefore, targeted inhibition of glutamine metabolism may have anti-tumorigenic implications. In the present study, we aimed to evaluate the effects of glutamine on ovarian cancer cell growth. Three ovarian cancer cell lines, HEY, SKOV3, and IGROV-1, were assayed for glutamine dependence by analyzing cytotoxicity, cell cycle progression, apoptosis, cell stress, and glucose/glutamine metabolism. Our results revealed that administration of glutamine increased cell proliferation in all three ovarian cancer cell lines in a dose dependent manner. Depletion of glutamine induced reactive oxygen species and expression of endoplasmic reticulum stress proteins. In addition, glutamine increased the activity of glutaminase (GLS) and glutamate dehydrogenase (GDH) by modulating the mTOR/S6 and MAPK pathways. Inhibition of mTOR activity by rapamycin or blocking S6 expression by siRNA inhibited GDH and GLS activity, leading to a decrease in glutamine-induced cell proliferation. These studies suggest that targeting glutamine metabolism may be a promising therapeutic strategy in the treatment of ovarian cancer.
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Affiliation(s)
- Lingqin Yuan
- Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Xiugui Sheng
- Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Adam K Willson
- Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Dario R Roque
- Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Jessica E Stine
- Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Hui Guo
- Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Hannah M Jones
- Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Chunxiao Zhou
- Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Victoria L Bae-Jump
- Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA Department of Gynecologic OncologyShanDong Tumor Hospital and Cancer Institute, Jinan University, Jinan 250117, People's Republic of ChinaDivision of Gynecologic OncologyUniversity of North Carolina at Chapel Hill, CB #7572, Physicians Office Building Rm #B105, Chapel Hill, North Carolina 27599, USALineberger Comprehensive Cancer CenterUniversity of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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16
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Goichon A, Bertrand J, Chan P, Lecleire S, Coquard A, Cailleux AF, Vaudry D, Déchelotte P, Coëffier M. Enteral delivery of proteins enhances the expression of proteins involved in the cytoskeleton and protein biosynthesis in human duodenal mucosa. Am J Clin Nutr 2015; 102:359-67. [PMID: 26109581 PMCID: PMC7109707 DOI: 10.3945/ajcn.114.104216] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 05/20/2015] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Amino acids are well known to be key effectors of gut protein turnover. We recently reported that enteral delivery of proteins markedly stimulated global duodenal protein synthesis in carbohydrate-fed healthy humans, but specifically affected proteins remain unknown. OBJECTIVE We aimed to assess the influence of an enteral protein supply on the duodenal mucosal proteome in carbohydrate-fed humans. DESIGN Six healthy volunteers received for 5 h, on 2 occasions and in random order, either an enteral infusion of maltodextrins alone (0.25 g · kg⁻¹ · h⁻¹) mimicking the fed state or maltodextrins with a protein powder (0.14 g proteins · kg⁻¹ · h⁻¹). Endoscopic duodenal biopsy specimens were then collected and frozen until analysis. A 2-dimensional polyacrylamide gel electrophoresis-based comparative proteomics analysis was then performed, and differentially expressed proteins (at least ±1.5-fold change; Student's t test, P < 0.05) were identified by mass spectrometry. Protein expression changes were confirmed by Western blot analysis. RESULTS Thirty-two protein spots were differentially expressed after protein delivery compared with maltodextrins alone: 28 and 4 spots were up- or downregulated, respectively. Among the 22 identified proteins, 11 upregulated proteins were involved either in the cytoskeleton (ezrin, moesin, plastin 1, lamin B1, vimentin, and β-actin) or in protein biosynthesis (glutamyl-prolyl-transfer RNA synthetase, glutaminyl-transfer RNA synthetase, elongation factor 2, elongation factor 1δ, and eukaryotic translation and initiation factor 3 subunit f). CONCLUSIONS Enteral delivery of proteins altered the duodenal mucosal proteome and mainly stimulated the expression of proteins involved in cytoskeleton and protein biosynthesis. These results suggest that protein supply may affect intestinal morphology by stimulating actin cytoskeleton remodeling.
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Affiliation(s)
- Alexis Goichon
- INSERM Unit 1073, Rouen, France; Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France
| | - Julien Bertrand
- INSERM Unit 1073, Rouen, France; Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France
| | - Philippe Chan
- Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France; Platform of Proteomics PISSARO, Mont-Saint-Aignan, France
| | - Stéphane Lecleire
- INSERM Unit 1073, Rouen, France; Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France; Gastroenterology, Rouen University Hospital, Rouen, France
| | | | - Anne-Françoise Cailleux
- Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France; Clinical Investigation Centre CIC 1404-INSERM, Rouen, France
| | - David Vaudry
- Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France; INSERM Unit 982, Mont-Saint-Aignan, France; and Platform of Proteomics PISSARO, Mont-Saint-Aignan, France
| | - Pierre Déchelotte
- INSERM Unit 1073, Rouen, France; Institute for Research and Innovation in Biomedicine, Rouen University, Rouen, France; Departments of Nutrition,
| | - Moïse Coëffier
- INSERM Unit 1073, Rouen, France; Clinical Investigation Centre CIC 1404-INSERM, Rouen, France
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17
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Bertrand J, Marion-Letellier R, Azhar S, Chan P, Legrand R, Goichon A, Ghouzali I, Aziz M, Vaudry D, Savoye G, Déchelotte P, Coëffier M. Glutamine enema regulates colonic ubiquitinated proteins but not proteasome activities during TNBS-induced colitis leading to increased mitochondrial activity. Proteomics 2015; 15:2198-210. [PMID: 25689466 DOI: 10.1002/pmic.201400304] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 01/12/2015] [Accepted: 02/12/2015] [Indexed: 12/22/2022]
Abstract
Ubiquitin proteasome system contributes to the regulation of intestinal inflammatory response as its inhibition is associated with tissue damage improvement. We aimed to evaluate whether glutamine is able to limit inflammation by targeting ubiquitin proteasome system in experimental colitis. Colitis was induced in male rats by intrarectal instillation of 2-4-6-trinitrobenzen sulfonic acid (TNBS) at day 1. From day 2 to day 6, rats daily received either an intrarectal instillation of PBS (TNBS/PBS group) or glutamine (TNBS/Gln). Rats were euthanized at day 7 and colonic samples were taken to evaluate ubiqutinated proteins by proteomic approach combining 2D electrophoresis and immunoblots directed against ubiquitin. Results were then confirmed by evaluating total expression of proteins and mRNA levels. Survival rate, TNFα, and IL-1β mRNA were improved in TNBS/Gln compared with TNBS/PBS (p < 0.05). Proteasome activities were affected by TNBS but not by glutamine. We identified eight proteins that were less ubiquitinated in TNBS/PBS compared with controls with no effect of glutamine. Four proteins were more ubiquitinated in TNBS/PBS group and restored in TNBS/Gln group. Finally, 12 ubiquitinated proteins were only affected by glutamine. Among proteins affected by glutamine, eight proteins (GFPT1, Gapdh, Pkm2, LDH, Bcat2, ATP5a1, Vdac1, and Vdac2) were involved in metabolic pathways. In conclusion, glutamine may regulate ubiquitination process during intestinal inflammation.
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Affiliation(s)
- Julien Bertrand
- INSERM Unit 1073, Nutrition Inflammation and Gut Brain Axis, Rouen, France.,Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France
| | - Rachel Marion-Letellier
- INSERM Unit 1073, Nutrition Inflammation and Gut Brain Axis, Rouen, France.,Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France
| | - Saïda Azhar
- INSERM Unit 1073, Nutrition Inflammation and Gut Brain Axis, Rouen, France.,Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France
| | - Philippe Chan
- Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France.,Plateform of Proteomics PISSARO, Mont-Saint-Aignan, France
| | - Romain Legrand
- INSERM Unit 1073, Nutrition Inflammation and Gut Brain Axis, Rouen, France.,Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France
| | - Alexis Goichon
- INSERM Unit 1073, Nutrition Inflammation and Gut Brain Axis, Rouen, France.,Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France
| | - Ibtissem Ghouzali
- INSERM Unit 1073, Nutrition Inflammation and Gut Brain Axis, Rouen, France.,Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France
| | - Moutaz Aziz
- Laboratory of Anatomo-Pathology, Rouen University Hospital, Rouen, France
| | - David Vaudry
- Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France.,Plateform of Proteomics PISSARO, Mont-Saint-Aignan, France.,INSERM Unit 982, Mont-Saint-Aignan, France
| | - Guillaume Savoye
- INSERM Unit 1073, Nutrition Inflammation and Gut Brain Axis, Rouen, France.,Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France.,Department of Gastroenterology, Rouen University Hospital, Rouen, France
| | - Pierre Déchelotte
- INSERM Unit 1073, Nutrition Inflammation and Gut Brain Axis, Rouen, France.,Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France.,Department of Nutrition, Rouen University Hospital, Rouen, France
| | - Moïse Coëffier
- INSERM Unit 1073, Nutrition Inflammation and Gut Brain Axis, Rouen, France.,Institute for Research and Innovation in Biomedicine, University of Rouen, Rouen, France.,Department of Nutrition, Rouen University Hospital, Rouen, France
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18
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Beutheu S, Ouelaa W, Guérin C, Belmonte L, Aziz M, Tennoune N, Bôle-Feysot C, Galas L, Déchelotte P, Coëffier M. Glutamine supplementation, but not combined glutamine and arginine supplementation, improves gut barrier function during chemotherapy-induced intestinal mucositis in rats. Clin Nutr 2014; 33:694-701. [DOI: 10.1016/j.clnu.2013.09.003] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 08/12/2013] [Accepted: 09/04/2013] [Indexed: 12/27/2022]
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19
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Enteral glutamine infusion modulates ubiquitination of heat shock proteins, Grp-75 and Apg-2, in the human duodenal mucosa. Amino Acids 2014; 46:1059-67. [PMID: 24449167 DOI: 10.1007/s00726-014-1670-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 01/08/2014] [Indexed: 12/16/2022]
Abstract
Glutamine, the most abundant amino acid in the human body, plays several important roles in the intestine. Previous studies showed that glutamine may affect protein expression by regulating ubiquitin-proteasome system. We thus aimed to evaluate the effects of glutamine on ubiquitinated proteins in human duodenal mucosa. Five healthy male volunteers were included and received during 5 h, on two occasions and in a random order, either an enteral infusion of maltodextrins alone (0.25 g kg(-1) h(-1), control), mimicking carbohydrate-fed state, or maltodextrins with glutamine (0.117 g kg(-1) h(-1), glutamine). Endoscopic duodenal biopsies were then taken. Total cellular protein extracts were separated by 2D gel electrophoresis and analyzed by an immunodetection using anti-ubiquitin antibody. Differentially ubiquitinated proteins were then identified by liquid chromatography-electrospray ionization MS/MS. Five proteins were differentially ubiquitinated between control and glutamine conditions. Among these proteins, we identified two chaperone proteins, Grp75 and hsp74. Grp75 was less ubiquitinated after glutamine infusion compared with control. In contrast, hsp74, also called Apg-2, was more ubiquitinated after glutamine. In conclusion, we provide evidence that glutamine may regulate ubiquitination processes of specific proteins, i.e., Grp75 and Apg-2. Grp75 has protective and anti-inflammatory properties, while Apg-2 indirectly regulates stress-induced cell survival and proliferation through interaction with ZO-1. Further studies should confirm these results in stress conditions.
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20
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Beutheu S, Ghouzali I, Galas L, Déchelotte P, Coëffier M. Glutamine and arginine improve permeability and tight junction protein expression in methotrexate-treated Caco-2 cells. Clin Nutr 2013; 32:863-9. [DOI: 10.1016/j.clnu.2013.01.014] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 11/23/2012] [Accepted: 01/27/2013] [Indexed: 12/16/2022]
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21
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Morrison BL, Mullendore ME, Stockwin LH, Borgel S, Hollingshead MG, Newton DL. Oxyphenisatin acetate (NSC 59687) triggers a cell starvation response leading to autophagy, mitochondrial dysfunction, and autocrine TNFα-mediated apoptosis. Cancer Med 2013; 2:687-700. [PMID: 24403234 PMCID: PMC3892800 DOI: 10.1002/cam4.107] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Revised: 06/11/2013] [Accepted: 06/12/2013] [Indexed: 12/17/2022] Open
Abstract
Oxyphenisatin (3,3-bis(4-hydroxyphenyl)-1H-indol-2-one) and several structurally related molecules have been shown to have in vitro and in vivo antiproliferative activity. This study aims to confirm and extend mechanistic studies by focusing on oxyphenisatin acetate (OXY, NSC 59687), the pro-drug of oxyphenisatin. Results confirm that OXY inhibits the growth of the breast cancer cell lines MCF7, T47D, HS578T, and MDA-MB-468. This effect is associated with selective inhibition of translation accompanied by rapid phosphorylation of the nutrient sensing eukaryotic translation initiation factor 2α (eIF2α) kinases, GCN2 and PERK. This effect was paralleled by activation of AMP-activated protein kinase (AMPK) combined with reduced phosphorylation of the mammalian target of rapamycin (mTOR) substrates p70S6K and 4E-BP1. Microarray analysis highlighted activation of pathways involved in apoptosis induction, autophagy, RNA/protein metabolism, starvation responses, and solute transport. Pathway inhibitor combination studies suggested a role for AMPK/mTOR signaling, de novo transcription and translation, reactive oxygen species (ROS)/glutathione metabolism, calcium homeostasis and plasma membrane Na(+) /K(+) /Ca(2+) transport in activity. Further examination confirmed that OXY treatment was associated with autophagy, mitochondrial dysfunction, and ROS generation. Additionally, treatment was associated with activation of both intrinsic and extrinsic apoptotic pathways. In the estrogen receptor (ER) positive MCF7 and T47D cells, OXY induced TNFα expression and TNFR1 degradation, indicating autocrine receptor-mediated apoptosis in these lines. Lastly, in an MCF7 xenograft model, OXY delivered intraperitoneally inhibited tumor growth, accompanied by phosphorylation of eIF2α and degradation of TNFR1. These data suggest that OXY induces a multifaceted cell starvation response, which ultimately induces programmed cell death.
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Affiliation(s)
- Bethanie L Morrison
- Drug Mechanism Group, Biological Testing Branch, Developmental Therapeutics Program, SAIC-Frederick Inc., Frederick National Laboratory for Cancer ResearchFrederick, Maryland, 21702
| | - Michael E Mullendore
- Drug Mechanism Group, Biological Testing Branch, Developmental Therapeutics Program, SAIC-Frederick Inc., Frederick National Laboratory for Cancer ResearchFrederick, Maryland, 21702
| | - Luke H Stockwin
- Drug Mechanism Group, Biological Testing Branch, Developmental Therapeutics Program, SAIC-Frederick Inc., Frederick National Laboratory for Cancer ResearchFrederick, Maryland, 21702
| | - Suzanne Borgel
- In Vivo Preclinical Support Group, Biological Testing Branch, Developmental Therapeutics Program, SAIC-Frederick Inc., Frederick National Laboratory for Cancer ResearchFrederick, Maryland, 21702
| | - Melinda G Hollingshead
- Biological Testing Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, Frederick National Laboratory for Cancer ResearchFrederick, Maryland, 21702
| | - Dianne L Newton
- Drug Mechanism Group, Biological Testing Branch, Developmental Therapeutics Program, SAIC-Frederick Inc., Frederick National Laboratory for Cancer ResearchFrederick, Maryland, 21702
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22
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Lv LZ, Tong CQ, Yu J, Han M, Gao JQ. Mechanism of enhanced oral absorption of hydrophilic drug incorporated in hydrophobic nanoparticles. Int J Nanomedicine 2013; 8:2709-17. [PMID: 23935363 PMCID: PMC3735274 DOI: 10.2147/ijn.s47400] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Hydroxysafflor yellow A (HSYA) is an effective ingredient of the Chinese herb Carthamus tinctorius L, which has high water solubility and low oral bioavailability. This research aims to develop a hydrophobic nanoparticle that can enhance the oral absorption of HSYA. Transmission electron microscopy and freeze-fracture replication transmission election microscopy showed that the HSYA nanoparticles have an irregular shape and a narrow size distribution. Zonula occludens 1 protein (ZO–1) labeling showed that the nanoparticles with different dilutions produced an opening in the tight junctions of Caco-2 cells without inducing cytotoxicity to the cells. Both enhanced uptake in Caco-2 cells monolayer and increased bioavailability in rats for HSYA nanoparticles indicated that the formulation could improve bioavailability of HSYA significantly after oral administration both in vitro and in vivo.
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Affiliation(s)
- Liang-Zhong Lv
- Department of Pharmacy, Zhejiang Provincial People's Hospital, Hangzhou, People's Republic of China
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23
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Coëffier M, Claeyssens S, Bôle-Feysot C, Guérin C, Maurer B, Lecleire S, Lavoinne A, Donnadieu N, Cailleux AF, Déchelotte P. Enteral delivery of proteins stimulates protein synthesis in human duodenal mucosa in the fed state through a mammalian target of rapamycin-independent pathway. Am J Clin Nutr 2013; 97:286-94. [PMID: 23283505 DOI: 10.3945/ajcn.112.046946] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Glutamine modulates duodenal protein metabolism in fasted healthy humans, but its effects in a fed state remain unknown. OBJECTIVE We aimed to assess the effects of either glutamine or an isonitrogenous protein mixture on duodenal protein metabolism in humans in the fed state. DESIGN Twenty-four healthy volunteers were randomly included in 2 groups. Each volunteer was studied on 2 occasions in a random order and received, during 5 h, either an enteral infusion of maltodextrins alone (0.25 g · kg⁻¹ · h⁻¹; both groups) that mimicked a carbohydrate fed state or maltodextrins with glutamine (group 1) or an isonitrogenous (22.4 mg N · kg⁻¹ · h⁻¹) protein powder (group 2). Simultaneously, a continuous intravenous infusion of ¹³C-leucine and ²H₅-phenylalanine (both 9 μmol · kg⁻¹ · h⁻¹) was performed. Endoscopic duodenal biopsies were taken. Leucine and phenylalanine enrichments were assessed by using gas chromatography-mass spectrometry in duodenal proteins and the intracellular free amino acids pool to calculate the mucosal fractional synthesis rate (FSR). Proteasome proteolytic activities and phosphokinase expression were assessed by using specific fluorogenic substrates and macroarrays, respectively. RESULTS The FSR and proteasome activity were not different after the glutamine supply compared with after maltodextrins alone. In contrast, the FSR increased (1.7-fold increase; P < 0.05) after protein-powder delivery without modification of total proteasome activity. The protein powder increased insulinemia, PI3 kinase, and erk phosphorylation but did not affect the mammalian target of rapamycin (mTOR) pathway and mitogen-activated protein kinase signal-integrating kinase 1 phosphorylation. A trend for an increase of eukaryotic translation initiation factor 4E phosphorylation was observed (P = 0.07). CONCLUSION In the carbohydrate fed state, enteral proteins but not glutamine increased duodenal protein synthesis through an mTOR independent pathway in humans.
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Affiliation(s)
- Moïse Coëffier
- Institut National de la Santé et de la Recherche Médicale (INSERM) Unit 1073, Rouen University Hospital, Rouen, France
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24
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Current world literature. Curr Opin Lipidol 2013; 24:86-94. [PMID: 23298962 DOI: 10.1097/mol.0b013e32835cb4f6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Marion-Letellier R, Raman M, Savoye G, Déchelotte P, Ghosh S. Nutrient modulation of autophagy: implications for inflammatory bowel diseases. Inflamm Bowel Dis 2013; 19:205-12. [PMID: 22573543 DOI: 10.1002/ibd.23001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
During nutrient deprivation, autophagy provides the constituents required to maintain the metabolism essential for survival. Recently, genome-wide association studies have identified genetic determinants for susceptibility to Crohn's disease (CD) such as ATG16L1 and IRGM that are involved in the autophagy pathway. Both disease-carrying NOD2 mutations and ATG16L1 mutations may result in impairment of autophagy. Impairment in autophagy results in impaired clearance of microbes. Ileal CD is associated with Paneth cell loss of function such as decreased production of α-defensins, which may arise from mutations in NOD2 or autophagy genes. Nutrients are able to modify several cellular pathways and in particular autophagy. We summarize the contribution of a variety of dietary components to activate autophagy. Understanding the crosstalk between nutrients and autophagy in the intestine may provide novel targets that have therapeutics potential in intestinal inflammation. Nutrient activation of autophagy may contribute to restoring the Paneth cell loss of function in ileal CD.
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26
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Goichon A, Chan P, Lecleire S, Coquard A, Cailleux AF, Walrand S, Lerebours E, Vaudry D, Déchelotte P, Coëffier M. An enteral leucine supply modulates human duodenal mucosal proteome and decreases the expression of enzymes involved in fatty acid beta-oxidation. J Proteomics 2012; 78:535-44. [PMID: 23142318 DOI: 10.1016/j.jprot.2012.10.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 10/10/2012] [Accepted: 10/29/2012] [Indexed: 01/10/2023]
Abstract
Leucine is well known to regulate protein metabolism in muscle. We recently reported that enteral leucine infusion decreased proteasome activity in human duodenal mucosa and enhanced intestinal cell proliferation, but its effects on gut proteome remain unknown. Therefore, we aimed to assess the effects of an enteral leucine infusion on the whole proteome of duodenal mucosa. In this work, 5 healthy volunteers received for 5h, on 2 occasions and in random order, an enteral supply of maltodextrins (0.25 g kg(-1) h(-1)) or maltodextrins supplemented with leucine (0.035 g kg(-1) h(-1)). At the end of infusion, endoscopic duodenal biopsy samples were collected and analyzed by 2D-PAGE. Eleven protein spots were differentially and significantly (P<0.05) expressed in response to the leucine-supplemented maltodextrins compared with maltodextrins alone. Forty percent of identified proteins by mass spectrometry were located in mitochondria. Four proteins were involved in lipid metabolism: HADHA, ACADVL and CPT2 expressions were reduced, whereas FABP1 expression was increased. In addition, the expression of DHA kinase involved in glycerol metabolism was also downregulated. Finally, leucine supplementation altered the duodenal mucosal proteome by regulating the expression of several enzymes mainly involved in lipid metabolism. These results suggest that leucine supplementation may slowdown fatty acid beta-oxidation in human duodenal mucosa.
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Regulation of intestinal protein metabolism by amino acids. Amino Acids 2012; 45:443-50. [DOI: 10.1007/s00726-012-1325-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Accepted: 05/15/2012] [Indexed: 12/24/2022]
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28
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Tennoune N, Bertrand J, Goichon A, Déchelotte P, Coëffier M. Régulation du métabolisme protéique intestinal par les nutriments. NUTR CLIN METAB 2011. [DOI: 10.1016/j.nupar.2011.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Tardito S, Chiu M, Franchi-Gazzola R, Dall'Asta V, Comi P, Bussolati O. The non-proteinogenic amino acids L-methionine sulfoximine and DL-phosphinothricin activate mTOR. Amino Acids 2011; 42:2507-12. [PMID: 21769496 DOI: 10.1007/s00726-011-0981-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 06/20/2011] [Indexed: 01/01/2023]
Abstract
L-Methionine sulfoximine (MSO) and DL-Phosphinothricin (PPT), two non-proteinogenic amino acids known as inhibitors of Glutamine Synthetase, cause a dose-dependent increase in the phosphorylation of the mTOR substrate S6 kinase 1. The effect is particularly evident in glutamine-depleted cells, where mTOR activity is very low, but is detectable for PPT also in the presence of glutamine. The stimulation of mTOR activity by either MSO or PPT is strongly synergized by essential amino acids. Thus, the non-proteinogenic amino acids MSO and PPT are mTOR activators.
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Affiliation(s)
- Saverio Tardito
- Unit of General and Clinical Pathology, Department of Experimental Medicine, University of Parma, Via Volturno 39, 43125, Parma, Italy
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