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Dai J, Pang M, Cai J, Liu Y, Qin Y. Integrated transcriptomic and metabolomic investigation of the genes and metabolites involved in swine follicular cyst formation. Front Vet Sci 2024; 10:1298132. [PMID: 38274662 PMCID: PMC10808629 DOI: 10.3389/fvets.2023.1298132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/13/2023] [Indexed: 01/27/2024] Open
Abstract
Follicular cysts are a common reproductive disorder in mammals that is usually caused by stress. However, the pathogenesis of follicular cysts in sows remains unclear. To provide new insights into the mechanisms of follicular cyst formation in pigs, we conducted a combined transcriptomic and metabolomic analysis on theca interna and mural granulosa cells of follicular cysts and mature follicles. We identified 2,533 up-regulated and 1,355 down-regulated genes in follicular cysts, compared with mature follicles. These differentially expressed genes were mainly found in signaling pathways related to tumor formation and cortisol synthesis and secretion as shown by Ingenuity Pathway Analysis, which predicted 4,362 upstream regulatory factors. The combined gene expression and pathway analysis identified the following genes as potential biomarkers for porcine follicular cysts: cytochrome P450 family 2 subfamily C polypeptide 18, L-lactate dehydrogenase, carbamoyl-phosphate synthase, fibroblast growth factor 7, integrin binding sialoprotein, interleukin 23 receptor, prolactin receptor, epiregulin, interleukin 1 receptor type II, arginine vasopressin receptor 1A, fibroblast growth factor 10, claudin 7, G Protein Subunit Gamma 3, cholecystokinin B receptor and cytosolic phospholipase A2. Metabolomics analysis found significant differences in 87 metabolites, which were enriched in unsaturated fatty acid biosynthesis, and sphingolipid signaling pathways. These results provide valuable information on the molecular mechanisms of follicular cyst formation, which may facilitate the development of new therapeutics to prevent and treat follicular cysts.
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Affiliation(s)
- Jiage Dai
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- College of Animal Sciences and Technology, China Agricultural University, Beijing, China
| | - Mingyue Pang
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, China
| | - Jiabao Cai
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- College of Life Sciences and Food Engineering, Hebei University of Engineering, Handan, China
| | - Yan Liu
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yusheng Qin
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Ali-Berrada S, Guitton J, Tan-Chen S, Gyulkhandanyan A, Hajduch E, Le Stunff H. Circulating Sphingolipids and Glucose Homeostasis: An Update. Int J Mol Sci 2023; 24:12720. [PMID: 37628901 PMCID: PMC10454113 DOI: 10.3390/ijms241612720] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Sphingolipids are a family of lipid molecules produced through different pathways in mammals. Sphingolipids are structural components of membranes, but in response to obesity, they are implicated in the regulation of various cellular processes, including inflammation, apoptosis, cell proliferation, autophagy, and insulin resistance which favors dysregulation of glucose metabolism. Of all sphingolipids, two species, ceramides and sphingosine-1-phosphate (S1P), are also found abundantly secreted into the bloodstream and associated with lipoproteins or extracellular vesicles. Plasma concentrations of these sphingolipids can be altered upon metabolic disorders and could serve as predictive biomarkers of these diseases. Recent important advances suggest that circulating sphingolipids not only serve as biomarkers but could also serve as mediators in the dysregulation of glucose homeostasis. In this review, advances of molecular mechanisms involved in the regulation of ceramides and S1P association to lipoproteins or extracellular vesicles and how they could alter glucose metabolism are discussed.
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Affiliation(s)
- Sarah Ali-Berrada
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; (S.A.-B.); (S.T.-C.); (A.G.)
- Institut Hospitalo-Universitaire ICAN, 75013 Paris, France
| | - Jeanne Guitton
- Institut des Neurosciences Paris-Saclay, Université Paris-Saclay, CNRS UMR 9197, 91400 Saclay, France;
| | - Sophie Tan-Chen
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; (S.A.-B.); (S.T.-C.); (A.G.)
- Institut Hospitalo-Universitaire ICAN, 75013 Paris, France
| | - Anna Gyulkhandanyan
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; (S.A.-B.); (S.T.-C.); (A.G.)
- Institut Hospitalo-Universitaire ICAN, 75013 Paris, France
| | - Eric Hajduch
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; (S.A.-B.); (S.T.-C.); (A.G.)
- Institut Hospitalo-Universitaire ICAN, 75013 Paris, France
| | - Hervé Le Stunff
- Institut des Neurosciences Paris-Saclay, Université Paris-Saclay, CNRS UMR 9197, 91400 Saclay, France;
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3
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Jiang H, Huang T, Yu Y, Zhou C, Qiu L, Mai HN, Gropler RJ, Klein RS, Tu Z. Characterization of a S1PR2 specific 11C-labeled radiotracer in streptozotocin-induced diabetic murine model. Nucl Med Biol 2023; 122-123:108370. [PMID: 37556928 PMCID: PMC10949307 DOI: 10.1016/j.nucmedbio.2023.108370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 08/11/2023]
Abstract
BACKGROUND Diabetes mellitus is a chronic progressive metabolic disorder that affects millions of people worldwide. Emerging evidence suggests the important roles of sphingolipid metabolism in diabetes. In particular, sphingosine-1-phosphate (S1P) and S1P receptor 2 (S1PR2) have important metabolic functions and are involved in several metabolic diseases. In diabetes, S1PR2 can effectively preserve β cells and improve glucose/insulin tolerance in high-fat diet induced and streptozotocin (STZ)-induced diabetic mouse models. We previously developed a group of potent and selective S1PR2 ligands and radioligands. METHODS In this study, we continued our efforts and characterized our leading S1PR2 radioligand, [11C]TZ34125, in a STZ-induced diabetic mouse model. [11C]TZ34125 was radiosynthesized in an automated synthesis module and in vitro saturation binding assay was performed using recombinant human S1PR2 membrane. In vitro saturation autoradiography analysis was also performed to determine the binding affinity of [11C]TZ34125 against mouse tissues. Type-1 diabetic mouse model was developed following a single high dose of STZ in C57BL/6 mice. Ex vivo biodistribution was performed to evaluate the distribution and amount of [11C]TZ34125 in tissues. In vitro autoradiography analysis was performed to compare the uptake of [11C]TZ34125 between diabetic and control animals in mouse spleen and pancreas. RESULTS Our in vitro saturation binding assay using [11C]TZ34125 confirmed [11C]TZ34125 is a potent radioligand to recombinant human S1PR2 membrane with a Kd value of 0.9 nM. Saturation autoradiographic analysis showed [11C]TZ34125 has a Kd of 67.5, 45.9, and 25.0 nM to mouse kidney, spleen, and liver tissues respectively. Biodistribution study in STZ-induced diabetic mice showed the uptake of [11C]TZ34125 was significantly elevated in the spleen (~2 fold higher) and pancreas (~1.4 fold higher) compared to normal controls. The increased uptake of [11C]TZ34125 was further confirmed using autoradiographic analysis in the spleen and pancreases of STZ-induced diabetic mice, indicating S1PR2 can potentially act as a biomarker of diabetes in pancreases and inflammation in spleen. Future mechanistic analysis and in vivo quantitative assessment using non-invasive PET imaging in large animal model of diabetes is worthwhile. CONCLUSIONS Overall, our data showed an increased uptake of our lead S1PR2-specific radioligand, [11C]TZ34125, in the spleen and pancreases of STZ-induced diabetic mice, and demonstrated [11C]TZ34125 has a great potential for preclinical and clinical usage for assessment of S1PR2 in diabetes and inflammation.
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Affiliation(s)
- Hao Jiang
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, 63110, United States of America
| | - Tianyu Huang
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, 63110, United States of America
| | - Yanbo Yu
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, 63110, United States of America
| | - Charles Zhou
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, 63110, United States of America
| | - Lin Qiu
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, 63110, United States of America
| | - Hien Ngoc Mai
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, 63110, United States of America
| | - Robert J Gropler
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, 63110, United States of America
| | - Robyn S Klein
- Departments of Medicine and Pathology and Immunology, Washington University School of Medicine, Saint Louis, MO, 63110, United States of America
| | - Zhude Tu
- Department of Radiology, Washington University School of Medicine, Saint Louis, MO, 63110, United States of America.
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Bandet CL, Tan-Chen S, Ali-Berrada S, Campana M, Poirier M, Blachnio-Zabielska A, Pais-de-Barros JP, Rouch C, Ferré P, Foufelle F, Le Stunff H, Hajduch E. Ceramide analogue C2-cer induces a loss in insulin sensitivity in muscle cells through the salvage/recycling pathway. J Biol Chem 2023:104815. [PMID: 37178918 DOI: 10.1016/j.jbc.2023.104815] [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: 10/27/2022] [Revised: 05/01/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023] Open
Abstract
Ceramides have been shown to play a major role in the onset of skeletal muscle insulin resistance and therefore in the prevalence of type 2 diabetes (T2D). However, many of the studies involved in the discovery of deleterious ceramide actions used a non-physiological cell-permeable short-chain ceramide analogue, the C2-ceramide (C2-cer). In the present study, we determined how C2-cer promotes insulin resistance in muscle cells. We demonstrate that C2-cer enters the salvage/recycling pathway and becomes de-acylated, yielding sphingosine, re-acylation of which depends on the availability of long chain fatty acids provided by the lipogenesis pathway in muscle cells. Importantly, we show these salvaged ceramides are actually responsible for the inhibition of insulin signaling induced by C2-cer. Interestingly, we also show that the exogenous and endogenous mono-unsaturated fatty acid oleate prevents C2-cer to be recycled into endogenous ceramide species in a diacylglycerol O-acyltransferase 1 (DGAT1)-dependent mechanism, which forces free fatty acid metabolism towards triacylglyceride production. Altogether, the study highlights for the first time that C2-cer induces a loss in insulin sensitivity through the salvage/recycling pathway in muscle cells. This study also validates C2-cer as a convenient tool to decipher mechanisms by which long-chain ceramides mediate insulin resistance in muscle cells and suggests that in addition to the de novo ceramide synthesis, recycling of ceramide could contribute to muscle insulin resistance observed in obesity and T2D.
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Affiliation(s)
- Cécile L Bandet
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; Institut Hospitalo-Universitaire ICAN, Paris, France
| | - Sophie Tan-Chen
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; Institut Hospitalo-Universitaire ICAN, Paris, France
| | - Sarah Ali-Berrada
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; Institut Hospitalo-Universitaire ICAN, Paris, France
| | - Mélanie Campana
- Université Paris-Saclay, CNRS UMR 9197, Institut des Neurosciences Paris-Saclay, CNRS UMR 9197, Saclay, France
| | - Maxime Poirier
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; Institut Hospitalo-Universitaire ICAN, Paris, France
| | | | - Jean-Paul Pais-de-Barros
- Lipidomics Core Facility, INSERM UMR1231 - Université Bourgogne Franche Comté, 15 Boulevard Mal de Lattre de Tassigny, F-21000 Dijon, France
| | - Claude Rouch
- Université de Paris Cité, Functional and Adaptive Biology Unit, UMR 8251, CNRS, Paris, France
| | - Pascal Ferré
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; Institut Hospitalo-Universitaire ICAN, Paris, France
| | - Fabienne Foufelle
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; Institut Hospitalo-Universitaire ICAN, Paris, France
| | - Hervé Le Stunff
- Université Paris-Saclay, CNRS UMR 9197, Institut des Neurosciences Paris-Saclay, CNRS UMR 9197, Saclay, France
| | - Eric Hajduch
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, F-75006 Paris, France; Institut Hospitalo-Universitaire ICAN, Paris, France.
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Na G, Zhang J, Lv D, Chen P, Song X, Cai F, Zheng S, Wan W, Shan Y. Germinated Brown rice enhanced n-3 PUFA metabolism in type 2 diabetes patients: A randomized controlled trial. Clin Nutr 2023; 42:579-589. [PMID: 36870245 DOI: 10.1016/j.clnu.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023]
Abstract
BACKGROUND Brown rice (BR) has been considered as a potential strategy in improving T2DM. However, there are a lack of population-based trials on the association of Germinated brown rice (GBR) and diabetes. AIMS We aimed to explore the influence of GBR diet in T2DM patients for 3 months and whether this effect relates to serum fatty acids. METHODS Two hundred and twenty T2DM patients have been enrolled and eligible subjects (n = 112, 61 female, 51 male) were randomly divided into GBR intervention group (n = 56) and control group (n = 56). Except those who lost follow-up and withdrew, final GBR group and control group consisted of 42 and 43 patients, respectively. Participants in GBR group were asked to consume 100 g/d GBR instead of equal refined grain (RG) for 3 months, while control group maintain their usual eating habits. A structured questionnaire was used for demographic information at baseline, and basic indicators were measured both at the beginning and end of the trail to evaluate plasma glucose and lipids levels. RESULTS In GBR group, mean dietary inflammation index (DII) decreased, indicating GBR intervention retarded patient inflammation. Besides, glycolipid related parameters, including FBG, HbA1c, TC and HDL, were all significantly lower than those in control group. Excitingly, fatty acid composition was changed by intake of GBR, especially n-3 PUFA and n-3/n-6 PUFA rate were significantly increased. Moreover, subjects in GBR group had higher levels of n-3 metabolites, such as RVE, MaR1 and PD1, reducing inflammatory effect. In contrast, n-6 metabolites, like LTB4 and PGE2 which could promote inflammatory effect, were lower in GBR group. CONCLUSION We confirmed that diet with 100 g/d GBR for 3 months could really improve T2DM to some extent. This beneficial effect may be related to n-3 metabolites, namely inflammation changes. TRIAL REGISTRATION ChiCRT-IOR-17013999, www.chictr.org.cn.
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Affiliation(s)
- Guanqiong Na
- School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
| | - Jing Zhang
- School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
| | - Dian Lv
- School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
| | - Ping Chen
- School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
| | - Xinyue Song
- School of Chemical and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Fenfen Cai
- School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
| | - Sicong Zheng
- School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
| | - Wenting Wan
- School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China
| | - Yujuan Shan
- School of Public Health and Management, Wenzhou Medical University, Wenzhou 325035, China.
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Yu H, Raza SHA, Pan Y, Cheng G, Mei C, Zan L. Integrative Analysis of Blood Transcriptomics and Metabolomics Reveals Molecular Regulation of Backfat Thickness in Qinchuan Cattle. Animals (Basel) 2023; 13:ani13061060. [PMID: 36978600 PMCID: PMC10044415 DOI: 10.3390/ani13061060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 03/11/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023] Open
Abstract
A crucial goal of reducing backfat thickness (BFT) is to indirectly improve feed conversion efficiency. This phenotype has been reported in certain papers; however, the molecular mechanism has yet to be fully revealed. Two extreme BFT groups, consisting of four Qinchuan cattle, were chosen for this study. We performed metabolite and transcriptome analyses of blood from cattle with a high BFT (H-BFT with average = 1.19) and from those with a low BFT (L-BFT with average = 0.39). In total, 1106 differentially expressed genes (DEGs) and 86 differentially expressed metabolites (DEMs) were identified in the extreme trait. In addition, serum ceramide was strongly correlated with BFT and could be used as a potential biomarker. Moreover, the most notable finding was that the functional genes (SMPD3 and CERS1) and metabolite (sphingosine 1-phosphate (S1P)) were filtered out and significantly enriched in the processes related to the sphingolipid metabolism. This investigation contributed to a better understanding of the subcutaneous fat depots in cattle. In general, our results indicated that the sphingolipid metabolism, involving major metabolites (serum ceramide and S1P) and key genes (SMPD3 and CERS1), could regulate BFT through blood circulation.
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Affiliation(s)
- Hengwei Yu
- College of Animal Science and Technology, Northwest A&F University, Xianyang 712100, China; (H.Y.); (S.H.A.R.)
| | - Sayed Haidar Abbas Raza
- College of Animal Science and Technology, Northwest A&F University, Xianyang 712100, China; (H.Y.); (S.H.A.R.)
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Nation-Local Joint Engineering Research Center for Machining and Safety of Livestock and Poultry Products, South China Agricultural University, Guangzhou 510642, China
| | - Yueting Pan
- College of Animal Science and Technology, Northwest A&F University, Xianyang 712100, China; (H.Y.); (S.H.A.R.)
| | - Gong Cheng
- College of Animal Science and Technology, Northwest A&F University, Xianyang 712100, China; (H.Y.); (S.H.A.R.)
| | - Chugang Mei
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
- National Beef Cattle Improvement Center, Xianyang 712100, China
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A&F University, Xianyang 712100, China; (H.Y.); (S.H.A.R.)
- National Beef Cattle Improvement Center, Xianyang 712100, China
- Correspondence:
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Bai X, Ma J, Wu X, Qiu L, Huang R, Zhang H, Huang H, Chen X. Impact of Visceral Obesity on Structural and Functional Alterations of Gut Microbiota in Polycystic Ovary Syndrome (PCOS): A Pilot Study Using Metagenomic Analysis. Diabetes Metab Syndr Obes 2023; 16:1-14. [PMID: 36760592 PMCID: PMC9843473 DOI: 10.2147/dmso.s388067] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 11/26/2022] [Indexed: 01/18/2023] Open
Abstract
OBJECTIVE We aimed to identify structural and functional alterations of gut microbiota associated with visceral obesity in adult women with polycystic ovary syndrome (PCOS). METHODS Twenty-seven adults with PCOS underwent stool and fasting blood collection, oral glucose tolerance testing, and visceral fat area (VFA) measurement via dual-bioimpedance technique. Metagenomic analysis was used to analyze gut microbiota. RESULTS PCOS patients were divided into three groups: visceral obesity group (PCOS-VO, n=9, age 28.33±5.68 years, BMI 37.06±4.27 kg/m2, VFA 128.67±22.45 cm2), non-visceral obesity group (PCOS-NVO, n=10, age 25.40±4.53, BMI 30.74±3.95, VFA 52.00±24.04), normal BMI group (PCOS-NB, n=8, age 27.88±2.53, BMI 21.56±2.20, VFA 27.00±21.18), with no statistical difference in age (P>0.05) and significantly statistical differences in BMI and VFA (P<0.05). The groups showed a significant difference in microbial β-diversity between PCOS-VO and PCOS-NVO (P=0.002) and no difference between PCOS-NVO and PCOS-NB (P=0.177). Bacteroidetes was the phylum with the highest relative abundance among all patients, followed by Firmicutes. Those with visceral obesity had a higher abundance of Prevotella, Megamonas, and Dialister genera, positively correlated with metabolic markers (r>0.4, P<0.05), and lower abundance of Phascolarctobacterium and Neisseria genera, negatively correlated with metabolic markers (r<-0.4, P<0.05). Functional annotation analysis showed significant differences in relative abundance of ribosome pathway, fatty acid biosynthesis pathway, and sphingolipid signaling pathway between groups, affecting lipid homeostasis and visceral fat accumulation. CONCLUSION Alteration in β-diversity of gut microbiota exists in PCOS with visceral obesity versus those without visceral obesity and relates to functional differences in ribosomes, fatty acid biosynthesis, and sphingolipid signaling pathways.
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Affiliation(s)
- Xuefeng Bai
- Department of Endocrinology, Second Affiliated Hospital of Fujian Medical University, Quanzhou City, Fujian Province, People’s Republic of China
| | - Jiangxin Ma
- Department of Endocrinology, Second Affiliated Hospital of Fujian Medical University, Quanzhou City, Fujian Province, People’s Republic of China
| | - Xiaohong Wu
- Department of Endocrinology, Second Affiliated Hospital of Fujian Medical University, Quanzhou City, Fujian Province, People’s Republic of China
| | - Lingling Qiu
- Department of Reproductive Medicine, Second Affiliated Hospital of Fujian Medical University, Quanzhou City, Fujian Province, People’s Republic of China
| | - Rongfu Huang
- Department of Clinical Laboratory, Second Affiliated Hospital of Fujian Medical University, Quanzhou City, Fujian Province, People’s Republic of China
| | - Haibin Zhang
- Department of Endocrinology, Second Affiliated Hospital of Fujian Medical University, Quanzhou City, Fujian Province, People’s Republic of China
| | - Huibin Huang
- Department of Endocrinology, Second Affiliated Hospital of Fujian Medical University, Quanzhou City, Fujian Province, People’s Republic of China
- Correspondence: Huibin Huang; Xiaoyu Chen, Department of Endocrinology, the Second Affiliated Hospital of Fujian Medical University, No. 950 Donghai Street, Fengze District, Quanzhou City, Fujian Province, 362000, People’s Republic of China, Tel +86-13313872001; +86-13600739755, Email ;
| | - Xiaoyu Chen
- Department of Endocrinology, Second Affiliated Hospital of Fujian Medical University, Quanzhou City, Fujian Province, People’s Republic of China
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Yang F, Chen G. The nutritional functions of dietary sphingomyelin and its applications in food. Front Nutr 2022; 9:1002574. [PMID: 36337644 PMCID: PMC9626766 DOI: 10.3389/fnut.2022.1002574] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 09/26/2022] [Indexed: 11/13/2022] Open
Abstract
Sphingolipids are common structural components of cell membranes and are crucial for cell functions in physiological and pathophysiological conditions. Sphingomyelin and its metabolites, such as sphingoid bases, ceramide, ceramide-1-phosphate, and sphingosine-1-phosphate, play signaling roles in the regulation of human health. The diverse structures of sphingolipids elicit various functions in cellular membranes and signal transduction, which may affect cell growth, differentiation, apoptosis, and maintain biological activities. As nutrients, dietary sphingomyelin and its metabolites have wide applications in the food and pharmaceutical industry. In this review, we summarized the distribution, classifications, structures, digestion, absorption and metabolic pathways of sphingolipids, and discussed the nutritional functioning of sphingomyelin in chronic metabolic diseases. The possible implications of dietary sphingomyelin in the modern food preparations including dairy products and infant formula, skin improvement, delivery system and oil organogels are also evaluated. The production of endogenous sphingomyelin is linked to pathological changes in obesity, diabetes, and atherosclerosis. However, dietary supplementations of sphingomyelin and its metabolites have been shown to maintain cholesterol homeostasis and lipid metabolism, and to prevent or treat these diseases. This seemly paradoxical phenomenon shows that dietary sphingomyelin and its metabolites are candidates for food additives and functional food development for the prevention and treatment of chronic metabolic diseases in humans.
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Affiliation(s)
- Fang Yang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, China
- *Correspondence: Fang Yang,
| | - Guoxun Chen
- Department of Nutrition, The University of Tennessee, Knoxville, TN, United States
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Chen L, Xu R, McDonald JD, Bruno RS, Choueiry F, Zhu J. Dairy Milk Casein and Whey Proteins Differentially Alter the Postprandial Lipidome in Persons with Prediabetes: A Comparative Lipidomics Study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:10209-10220. [PMID: 35948437 PMCID: PMC10352119 DOI: 10.1021/acs.jafc.2c03662] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Dairy milk, likely through its bioactive proteins, has been reported to attenuate postprandial hyperglycemia-induced oxidative stress responses implicated in cardiovascular diseases (CVDs). However, how its major proteins, whey and casein, alter metabolic excursions of the lipidome in persons with prediabetes is unclear. Therefore, the objective of this study was to examine whey or casein protein ingestion on glucose-induced alternations in lipidomic responses in adults (17 males and 6 females) with prediabetes. In this clinical study, participants consumed glucose alone, glucose + nonfat milk (NFM), or glucose with either whey (WHEY) or casein (CASEIN) protein, and plasma samples were collected at multiple time points. Lipidomics data from plasma samples was acquired using an ultra-high-performance liquid chromatography-high-resolution mass spectrometry-based platform. Our results indicated that glucose ingestion alone induced the largest number of changes in plasma lipids. WHEY showed an earlier and stronger impact to maintain the stability of the lipidome compared with CASEIN. WHEY protected against glucose-induced changes in glycerophospholipid and sphingolipid (SP) metabolism, while ether lipid metabolism and SP metabolism were the pathways most greatly impacted in CASEIN. Meanwhile, the decreased acyl carnitines and fatty acid (FA) 16:0 levels could attenuate lipid peroxidation after protein intervention to protect insulin secretory capacity. Diabetes-associated lipids, the increased phosphatidylethanolamine (PE) 34:2 and decreased phosphatidylcholine (PC) 34:3 in the NFM-T90 min, elevated PC 35:4 and decreased CE 18:1 to a CE 18:2 ratio in the WHEY-T180 min, decreased lysophosphatidylcholine (LPC) 22:6 and LPC 22:0/0:0 in the CASEIN-T90 min, and decreased PE 36:1 in the CASEIN-T180 min, indicating a decreased risk for prediabetes. Collectively, our study suggested that dairy milk proteins are responsible for the protective effect of non-fat milk on glucose-induced changes in the lipidome, which may potentially influence long-term CVD risk.
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Affiliation(s)
- Li Chen
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
- James Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
| | - Rui Xu
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Joshua D. McDonald
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Richard S. Bruno
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Fouad Choueiry
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
| | - Jiangjiang Zhu
- Human Nutrition Program, Department of Human Sciences, The Ohio State University, Columbus, OH 43210, USA
- James Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA
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10
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Serum ceramides could predict durable diabetes remission following gastric bypass surgery. MED 2022; 3:440-441. [PMID: 35809557 DOI: 10.1016/j.medj.2022.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Morbid obesity is a major risk factor for the development of type 2 diabetes (T2D). One strategy to both lose weight and counteract T2D is bariatric surgery (RYGB). In a study published in this issue of Med, Poss et al. revealed that circulating ceramides could predict the durability of T2D remission independently of weight loss following RYGB.
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11
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Meneyrol K, Estévez-Salguero Á, González-García I, Guitton J, Taouis M, Benomar Y, Magnan C, López M, Le Stunff H. Ovarian insufficiency impairs glucose-stimulated insulin secretion through activation of hypothalamic de novo ceramide synthesis. Metabolism 2021; 123:154846. [PMID: 34371064 DOI: 10.1016/j.metabol.2021.154846] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/25/2021] [Accepted: 08/02/2021] [Indexed: 12/20/2022]
Abstract
Oestrogens regulate body weight through their action on hypothalamus to modulate food intake and energy expenditure. Hypothalamic de novo ceramide synthesis plays a central role on obesity induced by oestrogen deficiency. Depletion in oestrogens is also known to be associated with glucose intolerance, which favours type 2 diabetes (T2D). However, the implication of hypothalamic ceramide in the regulation of glucose homeostasis by oestrogen is unknown. Here, we studied glucose homeostasis and insulin secretion in ovariectomized (OVX) female rats. OVX induces body weight gain associated with a hypothalamic inflammation and impaired glucose homeostasis. Genetic blockade of ceramide synthesis in the ventromedial nucleus of the hypothalamus (VMH) reverses hypothalamic inflammation and partly restored glucose tolerance induced by OVX. Furthermore, glucose-stimulated insulin secretion (GSIS) is increased in OVX rats due to a raise of insulin secretion second phase, a characteristic of early stage of T2D. In contrast, GSIS from isolated islets of OVX rats is totally blunted. Inhibition of ceramide synthesis in the VMH restores GSIS from isolated OVX islets and represses the second phase of insulin secretion. Stimulation of oestrogen receptor α (ERα) by oestradiol (E2) down-regulates ceramide synthesis in hypothalamic neuronal GT1-7 cells but no in microglial SIM-A9 cells. In contrast, genetic inactivation of ERα in VMH upregulates ceramide synthesis. These results indicate that hypothalamic neuronal de novo ceramide synthesis triggers the OVX-dependent impairment of glucose homeostasis which is partly mediated by a dysregulation of GSIS.
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Affiliation(s)
- Kelly Meneyrol
- Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Université de Paris, Paris, France
| | - Ánxela Estévez-Salguero
- NeurObesity Group, Department of Physiology, CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Ismael González-García
- NeurObesity Group, Department of Physiology, CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain
| | - Jeanne Guitton
- Institut des Neurosciences Paris-Saclay, CNRS UMR 9197, Université Paris Saclay, Orsay, France
| | - Mohammed Taouis
- Institut des Neurosciences Paris-Saclay, CNRS UMR 9197, Université Paris Saclay, Orsay, France
| | - Yacir Benomar
- Institut des Neurosciences Paris-Saclay, CNRS UMR 9197, Université Paris Saclay, Orsay, France
| | - Christophe Magnan
- Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Université de Paris, Paris, France
| | - Miguel López
- NeurObesity Group, Department of Physiology, CIMUS, University of Santiago de Compostela-Instituto de Investigación Sanitaria, Santiago de Compostela 15782, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), 15706, Spain.
| | - Hervé Le Stunff
- Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Université de Paris, Paris, France; Institut des Neurosciences Paris-Saclay, CNRS UMR 9197, Université Paris Saclay, Orsay, France.
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12
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Magnan C, Le Stunff H. Role of hypothalamic de novo ceramides synthesis in obesity and associated metabolic disorders. Mol Metab 2021; 53:101298. [PMID: 34273578 PMCID: PMC8353504 DOI: 10.1016/j.molmet.2021.101298] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/28/2021] [Accepted: 07/09/2021] [Indexed: 12/31/2022] Open
Abstract
Background Sphingolipid-mediated signalling pathways are described as important players in the normal functioning of neurons and nonneuronal cells in the central nervous system (CNS). Scope of review This review aims to show role of de novo ceramide synthesis in the CNS in controling key physiological processes, including food intake, energy expenditure, and thermogenesis. The corollary is a condition that leads to a dysfunction in ceramide metabolism in these central regions that can have major consequences on the physiological regulation of energy balance. Major conclusions Excessive hypothalamic de novo ceramide synthesis has been shown to result in the establishment of central insulin resistance, endoplasmic reticulum stress, and inflammation. Additionally, excessive hypothalamic de novo ceramide synthesis has also been associated with changes in the activity of the autonomic nervous system. Such dysregulation of hypothalamic de novo ceramide synthesis forms the key starting point for the initiation of pathophysiological conditions such as obesity – which may or may not be associated with type 2 diabetes.
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Affiliation(s)
| | - Hervé Le Stunff
- CNRS UMR 9198 Institut des Neurosciences Paris Saclay (Neuro-PSI), Université Paris-Saclay, Saclay, France.
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13
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Discovery of lipid profiles of type 2 diabetes associated with hyperlipidemia using untargeted UPLC Q-TOF/MS-based lipidomics approach. Clin Chim Acta 2021; 520:53-62. [PMID: 34077755 DOI: 10.1016/j.cca.2021.05.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 02/08/2023]
Abstract
The incidence of type 2 diabetes (T2D) is rising rapidly and has become an important public health problem. According to reports, people with T2D often have hyperlipidemia. Hence, in the current study, a plasma non-targeted lipidomics method was used to study the differences in lipid profile between 36 T2D-associated hyperlipidemia patients and 43 healthy controls by ultra-performance liquid chromatography coupled with quadrupole time-of-flight high-definition mass spectrometry (UPLC Q-TOF/MS). Furthermore, we studied the differences in lipid profile between 36 T2D-associated hyperlipidemia patients and 41 T2D patients. Principal component analysis (PCA), orthogonal partial least squares-discriminant analysis (OPLS-DA), S-plot and heatmap were used to analyze the lipid changes between the groups. Compared with the healthy control group, 37 lipids were significantly altered in the T2D-associated hyperlipidemia group, and when compared with the T2D group, 22 lipids were significantly altered in the T2D-associated hyperlipidemia group. Of all the detected lipids categories which included sphingolipids, glycerolipids, glycerophospholipids, prenol lipids and saccharolipids, glycerophospholipids accounted for the largest proportion in the two groups. Also, this study found that glycerophospholipid metabolism pathway was the most relevant pathway for these lipid metabolisms. The identified lipids may enhance the disease prediction and provide a new tool to monitor the progression of T2D-associated hyperlipidemia.
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14
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Reginato A, Veras ACC, Baqueiro MDN, Panzarin C, Siqueira BP, Milanski M, Lisboa PC, Torsoni AS. The Role of Fatty Acids in Ceramide Pathways and Their Influence on Hypothalamic Regulation of Energy Balance: A Systematic Review. Int J Mol Sci 2021; 22:5357. [PMID: 34069652 PMCID: PMC8160791 DOI: 10.3390/ijms22105357] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/30/2021] [Accepted: 05/06/2021] [Indexed: 12/09/2022] Open
Abstract
Obesity is a global health issue for which no major effective treatments have been well established. High-fat diet consumption is closely related to the development of obesity because it negatively modulates the hypothalamic control of food intake due to metaflammation and lipotoxicity. The use of animal models, such as rodents, in conjunction with in vitro models of hypothalamic cells, can enhance the understanding of hypothalamic functions related to the control of energy balance, thereby providing knowledge about the impact of diet on the hypothalamus, in addition to targets for the development of new drugs that can be used in humans to decrease body weight. Recently, sphingolipids were described as having a lipotoxic effect in peripheral tissues and the central nervous system. Specifically, lipid overload, mainly from long-chain saturated fatty acids, such as palmitate, leads to excessive ceramide levels that can be sensed by the hypothalamus, triggering the dysregulation of energy balance control. However, no systematic review has been undertaken regarding studies of sphingolipids, particularly ceramide and sphingosine-1-phosphate (S1P), the hypothalamus, and obesity. This review confirms that ceramides are associated with hypothalamic dysfunction in response to metaflammation, endoplasmic reticulum (ER) stress, and lipotoxicity, leading to insulin/leptin resistance. However, in contrast to ceramide, S1P appears to be a central satiety factor in the hypothalamus. Thus, our work describes current evidence related to sphingolipids and their role in hypothalamic energy balance control. Hypothetically, the manipulation of sphingolipid levels could be useful in enabling clinicians to treat obesity, particularly by decreasing ceramide levels and the inflammation/endoplasmic reticulum stress induced in response to overfeeding with saturated fatty acids.
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Affiliation(s)
- Andressa Reginato
- Biology Institute, State University of Rio de Janeiro, UERJ, Rio de Janeiro 20551-030, Brazil;
- Faculty of Applied Science, University of Campinas, UNICAMP, Campinas 13484-350, Brazil; (A.C.C.V.); (M.d.N.B.); (C.P.); (B.P.S.); (M.M.)
- Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas 13083-864, Brazil
| | - Alana Carolina Costa Veras
- Faculty of Applied Science, University of Campinas, UNICAMP, Campinas 13484-350, Brazil; (A.C.C.V.); (M.d.N.B.); (C.P.); (B.P.S.); (M.M.)
- Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas 13083-864, Brazil
| | - Mayara da Nóbrega Baqueiro
- Faculty of Applied Science, University of Campinas, UNICAMP, Campinas 13484-350, Brazil; (A.C.C.V.); (M.d.N.B.); (C.P.); (B.P.S.); (M.M.)
- Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas 13083-864, Brazil
| | - Carolina Panzarin
- Faculty of Applied Science, University of Campinas, UNICAMP, Campinas 13484-350, Brazil; (A.C.C.V.); (M.d.N.B.); (C.P.); (B.P.S.); (M.M.)
- Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas 13083-864, Brazil
| | - Beatriz Piatezzi Siqueira
- Faculty of Applied Science, University of Campinas, UNICAMP, Campinas 13484-350, Brazil; (A.C.C.V.); (M.d.N.B.); (C.P.); (B.P.S.); (M.M.)
- Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas 13083-864, Brazil
| | - Marciane Milanski
- Faculty of Applied Science, University of Campinas, UNICAMP, Campinas 13484-350, Brazil; (A.C.C.V.); (M.d.N.B.); (C.P.); (B.P.S.); (M.M.)
- Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas 13083-864, Brazil
| | | | - Adriana Souza Torsoni
- Faculty of Applied Science, University of Campinas, UNICAMP, Campinas 13484-350, Brazil; (A.C.C.V.); (M.d.N.B.); (C.P.); (B.P.S.); (M.M.)
- Obesity and Comorbidities Research Center, University of Campinas, UNICAMP, Campinas 13083-864, Brazil
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15
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Lachkar F, Ferré P, Foufelle F, Papaioannou A. Dihydroceramides: their emerging physiological roles and functions in cancer and metabolic diseases. Am J Physiol Endocrinol Metab 2021; 320:E122-E130. [PMID: 33135459 DOI: 10.1152/ajpendo.00330.2020] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Dihydroceramides (DhCers) are a type of sphingolipids that for a long time were regarded as biologically inactive. They are metabolic intermediates of the de novo sphingolipid synthesis pathway, and are converted into ceramides (Cers) with the addition of a double bond. Ceramides are abundant in tissues and have well-established biological functions. On the contrary, dihydroceramides are less prevalent, and despite their hitherto characterization as inert lipids, studies of the past decade began to unravel their implication in various biological processes distinct from those involving ceramides. These processes include cellular stress responses and autophagy, cell growth, pro-death or pro-survival pathways, hypoxia, and immune responses. In addition, their plasma concentration has been related to metabolic diseases and shown as a long-term predictor of type 2 diabetes onset. They are thus important players and potential biomarkers in pathologies ranging from diabetes to cancer and neurodegenerative diseases. The purpose of this mini-review is to highlight the emergence of dihydroceramides as a new class of bioactive sphingolipids by reporting recent advances on their biological characterization and pathological implications, focusing on cancer and metabolic diseases.
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Affiliation(s)
- Floriane Lachkar
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Pascal Ferré
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
- Department of Oncology and Endocrine Biochemistry, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Fabienne Foufelle
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Alexandra Papaioannou
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
- Institute of Cardiometabolism and Nutrition (ICAN), Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
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16
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Guitton J, Bandet CL, Mariko ML, Tan-Chen S, Bourron O, Benomar Y, Hajduch E, Le Stunff H. Sphingosine-1-Phosphate Metabolism in the Regulation of Obesity/Type 2 Diabetes. Cells 2020; 9:E1682. [PMID: 32668665 PMCID: PMC7407406 DOI: 10.3390/cells9071682] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/02/2020] [Accepted: 07/07/2020] [Indexed: 12/19/2022] Open
Abstract
Obesity is a pathophysiological condition where excess free fatty acids (FFA) target and promote the dysfunctioning of insulin sensitive tissues and of pancreatic β cells. This leads to the dysregulation of glucose homeostasis, which culminates in the onset of type 2 diabetes (T2D). FFA, which accumulate in these tissues, are metabolized as lipid derivatives such as ceramide, and the ectopic accumulation of the latter has been shown to lead to lipotoxicity. Ceramide is an active lipid that inhibits the insulin signaling pathway as well as inducing pancreatic β cell death. In mammals, ceramide is a key lipid intermediate for sphingolipid metabolism as is sphingosine-1-phosphate (S1P). S1P levels have also been associated with the development of obesity and T2D. In this review, the current knowledge on S1P metabolism in regulating insulin signaling in pancreatic β cell fate and in the regulation of feeding by the hypothalamus in the context of obesity and T2D is summarized. It demonstrates that S1P can display opposite effects on insulin sensitive tissues and pancreatic β cells, which depends on its origin or its degradation pathway.
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Affiliation(s)
- Jeanne Guitton
- Institut des Neurosciences Paris-Saclay, Université Paris Saclay, CNRS UMR 9197, F-91190 Orsay, France; (J.G.); (M.L.M.); (Y.B.)
| | - Cecile L. Bandet
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006 Paris, France; (C.L.B.); (S.T.-C.); (O.B.); (E.H.)
- Institut Hospitalo-Universitaire ICAN, F-75013 Paris, France
| | - Mohamed L. Mariko
- Institut des Neurosciences Paris-Saclay, Université Paris Saclay, CNRS UMR 9197, F-91190 Orsay, France; (J.G.); (M.L.M.); (Y.B.)
| | - Sophie Tan-Chen
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006 Paris, France; (C.L.B.); (S.T.-C.); (O.B.); (E.H.)
- Institut Hospitalo-Universitaire ICAN, F-75013 Paris, France
| | - Olivier Bourron
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006 Paris, France; (C.L.B.); (S.T.-C.); (O.B.); (E.H.)
- Institut Hospitalo-Universitaire ICAN, F-75013 Paris, France
- Assistance Publique-Hôpitaux de Paris, Département de Diabétologie et Maladies métaboliques, Hôpital Pitié-Salpêtrière, F-75013 Paris, France
| | - Yacir Benomar
- Institut des Neurosciences Paris-Saclay, Université Paris Saclay, CNRS UMR 9197, F-91190 Orsay, France; (J.G.); (M.L.M.); (Y.B.)
| | - Eric Hajduch
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006 Paris, France; (C.L.B.); (S.T.-C.); (O.B.); (E.H.)
- Institut Hospitalo-Universitaire ICAN, F-75013 Paris, France
| | - Hervé Le Stunff
- Institut des Neurosciences Paris-Saclay, Université Paris Saclay, CNRS UMR 9197, F-91190 Orsay, France; (J.G.); (M.L.M.); (Y.B.)
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17
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Non-Coding RNA: Role in Gestational Diabetes Pathophysiology and Complications. Int J Mol Sci 2020; 21:ijms21114020. [PMID: 32512799 PMCID: PMC7312670 DOI: 10.3390/ijms21114020] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 05/30/2020] [Accepted: 06/02/2020] [Indexed: 12/12/2022] Open
Abstract
Gestational Diabetes Mellitus (GDM) is defined as glucose intolerance that develops in the second or third trimester of pregnancy. GDM can lead to short-term and long-term complications both in the mother and in the offspring. Diagnosing and treating this condition is therefore of great importance to avoid poor pregnancy outcomes. There is increasing interest in finding new markers with potential diagnostic, prognostic and therapeutic utility in GDM. Non-coding RNAs (ncRNAs), including microRNAs, long non-coding RNAs and circular RNAs, are critically involved in metabolic processes and their dysregulated expression has been reported in several pathological contexts. The aberrant expression of several circulating or placenta-related ncRNAs has been linked to insulin resistance and β-cell dysfunction, the key pathophysiological features of GDM. Furthermore, significant associations between altered ncRNA profiles and GDM-related complications, such as macrosomia or trophoblast dysfunction, have been observed. Remarkably, the deregulation of ncRNAs, which might be linked to a detrimental intrauterine environment, can lead to changes in the expression of target genes in the offspring, possibly contributing to the development of long-term GDM-related complications, such as metabolic and cardiovascular diseases. In this review, all the recent findings on ncRNAs and GDM are summarized, particularly focusing on the molecular aspects and the pathophysiological implications of this complex relationship.
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18
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Wang X, Wang Y, Xu J, Xue C. Sphingolipids in food and their critical roles in human health. Crit Rev Food Sci Nutr 2020; 61:462-491. [PMID: 32208869 DOI: 10.1080/10408398.2020.1736510] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Sphingolipids (SLs) are ubiquitous structural components of cell membranes and are essential for cell functions under physiological conditions or during disease progression. Abundant evidence supports that SLs and their metabolites, including ceramide (Cer), ceramide-1-phosphate (C1P), sphingosine (So), sphingosine-1-phosphate (S1P), are signaling molecules that regulate a diverse range of cellular processes and human health. However, there are limited reviews on the emerging roles of exogenous dietary SLs in human health. In this review, we discuss the ubiquitous presence of dietary SLs, highlighting their structures and contents in foodstuffs, particularly in sea foods. The digestion and metabolism of dietary SLs is also discussed. Focus is given to the roles of SLs in both the etiology and prevention of diseases, including bacterial infection, cancers, neurogenesis and neurodegenerative diseases, skin integrity, and metabolic syndrome (MetS). We propose that dietary SLs represent a "functional" constituent as emerging strategies for improving human health. Gaps in research that could be of future interest are also discussed.
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Affiliation(s)
- Xiaoxu Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, China
| | - Yuming Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, China.,Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Jie Xu
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, China
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong, China.,Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
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19
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Le Barz M, Boulet MM, Calzada C, Cheillan D, Michalski MC. Alterations of endogenous sphingolipid metabolism in cardiometabolic diseases: Towards novel therapeutic approaches. Biochimie 2019; 169:133-143. [PMID: 31614170 DOI: 10.1016/j.biochi.2019.10.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 10/08/2019] [Indexed: 12/16/2022]
Abstract
The increasing prevalence of obesity and metabolic diseases is a worldwide public health concern, and the advent of new analytical technologies has made it possible to highlight the involvement of some molecules, such as sphingolipids (SL), in their pathophysiology. SL are constituents of cell membranes, lipoproteins and lipid droplets (LD), and are now considered as bioactive molecules. Indeed, growing evidence suggests that SL, characterized by diverse families and species, could represent one of the main regulators of lipid metabolism. There is an increasing amount of data reporting that plasma SL profile is altered in metabolic diseases. However, less is known about SL metabolism dysfunction in cells and tissues and how it may impact the lipoprotein metabolism, its functionality and composition. In cardiometabolic pathologies, the link between serum SL concentrations and alterations of their metabolism in various organs and LD is still unclear. Pharmacological approaches have been developed in order to activate or inhibit specific key enzymes of the SL metabolism, and to positively modulate SL profile or related metabolic pathways. Nevertheless, little is known about the long-term impact of such approaches in humans and the current literature still focuses on the decomposition of the different parts of this complex system rather than performing an integrated analysis of the whole SL metabolism. In addition, since SL can be provided from exogenous sources, it is also of interest to evaluate their impact on the homeostasis of endogenous SL metabolism, which could be beneficial in prevention or treatment of obesity and related metabolic disorders.
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Affiliation(s)
- Mélanie Le Barz
- Univ Lyon, CarMeN Laboratory, Inserm, INRA, INSA Lyon, Université Claude Bernard Lyon 1, Lyon-Sud Medical School, Pierre-Bénite, Fr-69310, France.
| | - Marie Michèle Boulet
- Univ Lyon, CarMeN Laboratory, Inserm, INRA, INSA Lyon, Université Claude Bernard Lyon 1, Lyon-Sud Medical School, Pierre-Bénite, Fr-69310, France.
| | - Catherine Calzada
- Univ Lyon, CarMeN Laboratory, Inserm, INRA, INSA Lyon, Université Claude Bernard Lyon 1, Lyon-Sud Medical School, Pierre-Bénite, Fr-69310, France.
| | - David Cheillan
- Univ Lyon, CarMeN Laboratory, Inserm, INRA, INSA Lyon, Université Claude Bernard Lyon 1, Lyon-Sud Medical School, Pierre-Bénite, Fr-69310, France; Service Biochimie et Biologie Moléculaire Grand Est, Centre de Biologie Est, Hospices Civils de Lyon, 69677, Bron, France.
| | - Marie-Caroline Michalski
- Univ Lyon, CarMeN Laboratory, Inserm, INRA, INSA Lyon, Université Claude Bernard Lyon 1, Lyon-Sud Medical School, Pierre-Bénite, Fr-69310, France.
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20
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Fang Z, Pyne S, Pyne NJ. WITHDRAWN: Ceramide and Sphingosine 1-Phosphate in adipose dysfunction. Prog Lipid Res 2019:100991. [PMID: 31442525 DOI: 10.1016/j.plipres.2019.100991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/21/2019] [Accepted: 04/01/2019] [Indexed: 11/18/2022]
Affiliation(s)
- Zijian Fang
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161, Cathedral St, Glasgow, G4 0RE, Scotland, UK
| | - Susan Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161, Cathedral St, Glasgow, G4 0RE, Scotland, UK
| | - Nigel J Pyne
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161, Cathedral St, Glasgow, G4 0RE, Scotland, UK
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21
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Le Stunff H, Véret J, Kassis N, Denom J, Meneyrol K, Paul JL, Cruciani-Guglielmacci C, Magnan C, Janel N. Deciphering the Link Between Hyperhomocysteinemia and Ceramide Metabolism in Alzheimer-Type Neurodegeneration. Front Neurol 2019; 10:807. [PMID: 31417486 PMCID: PMC6684947 DOI: 10.3389/fneur.2019.00807] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 07/15/2019] [Indexed: 12/13/2022] Open
Abstract
Aging is one of the strongest risk factor for Alzheimer's disease (AD). However, several data suggest that dyslipidemia can either contribute or serve as co-factors in AD appearance. AD could be examined as a metabolic disorder mediated by peripheral insulin resistance. Insulin resistance is associated with dyslipidemia, which results in increased hepatic ceramide generation. Hepatic steatosis induces pro-inflammatory cytokine activation which is mediated by the increased ceramides production. Ceramides levels increased in cells due to perturbation in sphingolipid metabolism and upregulated expression of enzymes involved in ceramide synthesis. Cytotoxic ceramides and related molecules generated in liver promote insulin resistance, traffic through the circulation due to injury or cell death caused by local liver inflammation, and because of their hydrophobic nature, they can cross the blood-brain barrier and thereby exert neurotoxic responses as reducing insulin signaling and increasing pro-inflammatory cytokines. These abnormalities propagate a cascade of neurodegeneration associated with oxidative stress and ceramide generation, which potentiate brain insulin resistance, apoptosis, myelin degeneration, and neuro-inflammation. Therefore, excess of toxic lipids generated in liver can cause neurodegeneration. Elevated homocysteine level is also a risk factor for AD pathology and is narrowly associated with metabolic diseases and non-alcoholic fatty liver disease. The existence of a homocysteine/ceramides signaling pathway suggests that homocysteine toxicity could be partly mediated by intracellular ceramide accumulation due to stimulation of ceramide synthase. In this article, we briefly examined the role of homocysteine and ceramide metabolism linking metabolic diseases and non-alcoholic fatty liver disease to AD. We therefore analyzed the expression of mainly enzymes implicated in ceramide and sphingolipid metabolism and demonstrated deregulation of de novo ceramide biosynthesis and S1P metabolism in liver and brain of hyperhomocysteinemic mice.
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Affiliation(s)
- Hervé Le Stunff
- Université de Paris, BFA, UMR 8251, CNRS, Paris, France.,Institut des Neurosciences Paris-Saclay (Neuro-PSI), Université Paris-Sud, CNRS UMR 9197, Orsay, France
| | - Julien Véret
- Université de Paris, BFA, UMR 8251, CNRS, Paris, France
| | - Nadim Kassis
- Université de Paris, BFA, UMR 8251, CNRS, Paris, France
| | - Jessica Denom
- Université de Paris, BFA, UMR 8251, CNRS, Paris, France
| | | | - Jean-Louis Paul
- AP-HP, Hôpital Européen Georges Pompidou, Service de Biochimie, Paris, France
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22
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Ceramide and sphingosine 1-phosphate in adipose dysfunction. Prog Lipid Res 2019; 74:145-159. [PMID: 30951736 DOI: 10.1016/j.plipres.2019.04.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/21/2019] [Accepted: 04/01/2019] [Indexed: 12/17/2022]
Abstract
The increased adipose tissue mass of obese individuals enhances the risk of metabolic syndrome, type 2 diabetes and cardiovascular diseases. During pathological expansion of adipose tissue, multiple molecular controls of lipid storage, adipocyte turn-over and endocrine secretion are perturbed and abnormal lipid metabolism results in a distinct lipid profile. There is a role for ceramides and sphingosine 1-phosphate (S1P) in inducing adipose dysfunction. For instance, the alteration of ceramide biosynthesis, through the de-regulation of key enzymes, results in aberrant formation of ceramides (e.g. C16:0 and C18:0) which block insulin signaling and promote adipose inflammation. Furthermore, S1P can induce defective adipose tissue phenotypes by promoting chronic inflammation and inhibiting adipogenesis. These abnormal changes are discussed in the context of possible therapeutic approaches to re-establish normal adipose function and to, thereby, increase insulin sensitivity in type 2 diabetes. Such novel approaches include blockade of ceramide biosynthesis using inhibitors of sphingomyelinase or dihydroceramide desaturase and by antagonism of S1P receptors, such as S1P2.
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23
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Emergence of membrane sphingolipids as a potential therapeutic target. Biochimie 2019; 158:257-264. [PMID: 30703477 DOI: 10.1016/j.biochi.2019.01.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 01/23/2019] [Indexed: 11/23/2022]
Abstract
BACKGROUND Though sphingolipids are ubiquitously present in eukaryotic cells, but until the last decade, they were merely considered as a structural component of the plasma membrane with limited function. However, over the last decade, numerous functions have been ascribed to sphingolipids after the seminal discoveries on the bioactivities of several sphingolipids. SCOPE OF REVIEW Sphingolipids are now well-recognized signals for fundamental cellular processes. Here we discussed about the advent of several sphingolipids components as potential therapeutic target for both human and plants. MAJOR CONCLUSIONS Sphingolipid contents and/or sphingolipid-metabolizing enzyme expression/activity often get impaired during pathophysiological conditions, and hence manipulation of this signaling pathway may be beneficial in disease diagnosis, and the plasma concentrations can serve as an important prognostic and diagnostic marker for the disease. GENERAL SIGNIFICANCE Sphingolipids are emerging as a goldmine for new therapeutic drug targets with promising new applications (cosmeceutical and nutraceutical), thereby opening new avenues for pharmaceuticals and nutraceutical industries.
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24
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Wei H, Wang J, Li W, Ma R, Xu Z, Luo Z, Lu Y, Zhang X, Long X, Pu J, Tang Q. The underlying pathophysiology association between the Type 2-diabetic and hepatocellular carcinoma. J Cell Physiol 2018; 234:10835-10841. [PMID: 30585632 DOI: 10.1002/jcp.27919] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 10/23/2018] [Indexed: 12/15/2022]
Abstract
Type 2-diabetic (T2D) disease has been reported to increase the incidence of liver cancer, however, the underlying pathophysiology is still not fully understood. Here, we aimed to reveal the underlying pathophysiology association between the T2D and hepatocellular carcinoma (HCC) and, therefore, to find the possible therapeutic targets in the occurrence and development of HCC. The methylation microarray data of T2D and HCC were extracted from the Gene Expression Omnibus and The Cancer Genome Atlas. A total of 504 differentially methylated genes (DMGs) between T2D samples and the controls were identified, whereas 6269 DMGs were identified between HCC samples and the control groups. There were 336 DMGs coexisting in diabetes and HCC, among which 86 genes were comethylated genes. These genes were mostly enriched in pathways as glycosaminoglycan biosynthesis, fatty acid, and metabolic pathway as glycosaminoglycan degradation and thiamine, fructose and mannose. There were 250 DMGs that had differential methylation direction between T2D DMGs and HCC DMGs, and these genes were enriched in the Sphingolipid metabolism pathway and immune pathways through natural killer cell-mediated cytotoxicity and ak-STAT signaling pathway. Eight genes were found related to the occurrence and development of diabetes and HCC. Moreover, the result of protein-protein interaction network showed that CDKN1A gene was related to the prognosis of HCC. In summary, eight genes were found to be associated with the development of HCC and CDKN1A may serve as the potential prognostic gene for HCC.
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Affiliation(s)
- Huamei Wei
- Department of Pathology, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China.,Clinic Medicine Research Center of Hepatobiliary Diseases, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Jianchu Wang
- Clinic Medicine Research Center of Hepatobiliary Diseases, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China.,Department of Hepatobiliary Surgery, Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Wenchuan Li
- Clinic Medicine Research Center of Hepatobiliary Diseases, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China.,Department of Hepatobiliary Surgery, Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Rihai Ma
- Clinic Medicine Research Center of Hepatobiliary Diseases, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China.,Department of Hepatobiliary Surgery, Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Zuoming Xu
- Graduate College of Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Zongjiang Luo
- Graduate College of Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Yuan Lu
- Graduate College of Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Xiaoyu Zhang
- Department of Pathology, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Xidai Long
- Department of Pathology, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China.,Clinic Medicine Research Center of Hepatobiliary Diseases, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Jian Pu
- Clinic Medicine Research Center of Hepatobiliary Diseases, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China.,Department of Hepatobiliary Surgery, Youjiang Medical College for Nationalities, Guangxi Zhuang, China
| | - Qianli Tang
- Clinic Medicine Research Center of Hepatobiliary Diseases, Affiliated Hospital of Youjiang Medical College for Nationalities, Guangxi Zhuang, China.,Department of Hepatobiliary Surgery, Youjiang Medical College for Nationalities, Guangxi Zhuang, China
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25
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Bellini L, Campana M, Rouch C, Chacinska M, Bugliani M, Meneyrol K, Hainault I, Lenoir V, Denom J, Véret J, Kassis N, Thorens B, Ibberson M, Marchetti P, Blachnio-Zabielska A, Cruciani-Guglielmacci C, Prip-Buus C, Magnan C, Le Stunff H. Protective role of the ELOVL2/docosahexaenoic acid axis in glucolipotoxicity-induced apoptosis in rodent beta cells and human islets. Diabetologia 2018; 61:1780-1793. [PMID: 29754287 DOI: 10.1007/s00125-018-4629-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 03/08/2018] [Indexed: 12/19/2022]
Abstract
AIMS/HYPOTHESIS Dietary n-3 polyunsaturated fatty acids, especially docosahexaenoic acid (DHA), are known to influence glucose homeostasis. We recently showed that Elovl2 expression in beta cells, which regulates synthesis of endogenous DHA, was associated with glucose tolerance and played a key role in insulin secretion. The present study aimed to examine the role of the very long chain fatty acid elongase 2 (ELOVL2)/DHA axis on the adverse effects of palmitate with high glucose, a condition defined as glucolipotoxicity, on beta cells. METHODS We detected ELOVL2 in INS-1 beta cells and mouse and human islets using quantitative PCR and western blotting. Downregulation and adenoviral overexpression of Elovl2 was carried out in beta cells. Ceramide and diacylglycerol levels were determined by radio-enzymatic assay and lipidomics. Apoptosis was quantified using caspase-3 assays and poly (ADP-ribose) polymerase cleavage. Palmitate oxidation and esterification were determined by [U-14C]palmitate labelling. RESULTS We found that glucolipotoxicity decreased ELOVL2 content in rodent and human beta cells. Downregulation of ELOVL2 drastically potentiated beta cell apoptosis induced by glucolipotoxicity, whereas adenoviral Elovl2 overexpression and supplementation with DHA partially inhibited glucolipotoxicity-induced cell death in rodent and human beta cells. Inhibition of beta cell apoptosis by the ELOVL2/DHA axis was associated with a decrease in ceramide accumulation. However, the ELOVL2/DHA axis was unable to directly alter ceramide synthesis or metabolism. By contrast, DHA increased palmitate oxidation but did not affect its esterification. Pharmacological inhibition of AMP-activated protein kinase and etomoxir, an inhibitor of carnitine palmitoyltransferase 1 (CPT1), the rate-limiting enzyme in fatty acid β-oxidation, attenuated the protective effect of the ELOVL2/DHA axis during glucolipotoxicity. Downregulation of CPT1 also counteracted the anti-apoptotic action of the ELOVL2/DHA axis. By contrast, a mutated active form of Cpt1 inhibited glucolipotoxicity-induced beta cell apoptosis when ELOVL2 was downregulated. CONCLUSIONS/INTERPRETATION Our results identify ELOVL2 as a critical pro-survival enzyme for preventing beta cell death and dysfunction induced by glucolipotoxicity, notably by favouring palmitate oxidation in mitochondria through a CPT1-dependent mechanism.
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Affiliation(s)
- Lara Bellini
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France
| | - Mélanie Campana
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France
| | - Claude Rouch
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France
| | - Marta Chacinska
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Bialystok, Poland
| | - Marco Bugliani
- Department of Clinical and Experimental Medicine, Islet Laboratory, University of Pisa, Pisa, Italy
| | - Kelly Meneyrol
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France
| | | | - Véronique Lenoir
- Inserm U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Jessica Denom
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France
| | - Julien Véret
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France
| | - Nadim Kassis
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France
| | - Bernard Thorens
- Centre for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
| | - Mark Ibberson
- Vital-IT Group, SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Piero Marchetti
- Department of Clinical and Experimental Medicine, Islet Laboratory, University of Pisa, Pisa, Italy
| | - Agnieszka Blachnio-Zabielska
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland
- Department of Hygiene, Epidemiology and Metabolic Disorders, Medical University of Bialystok, Bialystok, Poland
| | - Céline Cruciani-Guglielmacci
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France
| | - Carina Prip-Buus
- Inserm U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Christophe Magnan
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France
| | - Hervé Le Stunff
- Unité Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Équipe Régulation de la glycémie par le système nerveux central, Université Paris Diderot, 4 rue Marie-Andrée-Lagroua-Weill-Hallé, 75205, Paris CEDEX 13, France.
- Université Paris-Sud, Paris-Saclay Institute of Neuroscience, CNRS UMR 9197, Orsay, France.
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26
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Metcalfe LK, Smith GC, Turner N. Defining lipid mediators of insulin resistance - controversies and challenges. J Mol Endocrinol 2018; 62:JME-18-0023. [PMID: 30068522 DOI: 10.1530/jme-18-0023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 07/04/2018] [Accepted: 07/31/2018] [Indexed: 12/31/2022]
Abstract
Essential elements of all cells, lipids play important roles in energy production, signalling and as structural components. Despite these critical functions, excessive availability and intracellular accumulation of lipid is now recognised as a major factor contributing to many human diseases, including obesity and diabetes. In the context of these metabolic disorders, ectopic deposition of lipid has been proposed to have deleterious effects of insulin action. While this relationship has been recognised for some time now, there is currently no unifying mechanism to explain how lipids precipitate the development of insulin resistance. This review summarises the evidence linking specific lipid molecules to the induction of insulin resistance, describing some of the current controversies and challenges for future studies in this field.
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Affiliation(s)
- Louise K Metcalfe
- L Metcalfe, Department of Pharmacology, School of Medical Sciences, UNSW Australia, Kensington, Australia
| | - Greg C Smith
- G Smith, Department of Pharmacology, School of Medical Sciences, UNSW Australia, Kensington, Australia
| | - Nigel Turner
- N Turner, Department of Pharmacology, School of Medical Sciences, University of New South Wales, Sydney, Australia
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27
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Daemen S, van Polanen N, Hesselink MKC. The effect of diet and exercise on lipid droplet dynamics in human muscle tissue. ACTA ACUST UNITED AC 2018. [PMID: 29514886 DOI: 10.1242/jeb.167015] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The majority of fat in the human body is stored as triacylglycerols in white adipose tissue. In the obese state, adipose tissue mass expands and excess lipids are stored in non-adipose tissues, such as skeletal muscle. Lipids are stored in skeletal muscle in the form of small lipid droplets. Although originally viewed as dull organelles that simply store lipids as a consequence of lipid overflow from adipose tissue, lipid droplets are now recognized as key components in the cell that exert a variety of relevant functions in multiple tissues (including muscle). Here, we review the effect of diet and exercise interventions on myocellular lipid droplets and their putative role in insulin sensitivity from a human perspective. We also provide an overview of lipid droplet biology and identify gaps for future research.
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Affiliation(s)
- Sabine Daemen
- Department of Human Biology and Human Movement Sciences, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, 6200MD Maastricht, The Netherlands
| | - Nynke van Polanen
- Department of Human Biology and Human Movement Sciences, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, 6200MD Maastricht, The Netherlands
| | - Matthijs K C Hesselink
- Department of Human Biology and Human Movement Sciences, NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, 6200MD Maastricht, The Netherlands
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28
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Le Marec A, Sungeelee S, Zeghouani A, Gonzalez L, Le Stunff H. [Role of ceramide metabolism in adipose browning: impact on energy homeostasis in obesity]. Med Sci (Paris) 2018; 34:132-135. [PMID: 29451483 DOI: 10.1051/medsci/20183402010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Axelle Le Marec
- Unité biologie fonctionnelle et adaptative, CNRS UMR 8251, Université Paris Diderot Paris, France
| | | | - Amina Zeghouani
- M1 Biologie Santé, Université Paris-Saclay, 91405 Orsay, France
| | | | - Hervé Le Stunff
- Unité biologie fonctionnelle et adaptative, CNRS UMR 8251, Université Paris Diderot Paris, France - Endocrinologie moléculaire de la prise alimentaire, Université Paris-Sud, CNRS UMR 9197, Institut des neurosciences Paris-Saclay Orsay, France
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29
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Zhou Y, Men L, Pi Z, Wei M, Song F, Zhao C, Liu Z. Fecal Metabolomics of Type 2 Diabetic Rats and Treatment with Gardenia jasminoides Ellis Based on Mass Spectrometry Technique. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1591-1599. [PMID: 29363305 DOI: 10.1021/acs.jafc.7b06082] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Modern studies have indicated Gardenia jasminoides Ellis (G. jasminoides) showed positive effect in treating type 2 diabetes mellitus (T2DM). In this study, 60 streptozotocin-induced T2DM rats were divided into four groups: type 2 diabetes control group, geniposide-treated group, total iridoid glycosides-treated group, and crude extraction of gardenlae fructus-treated group. The other ten healthy rats were the healthy control group. During 12 weeks of treatment, rat's feces samples were collected for the metabolomics study based on mass spectrometry technique. On the basis of the fecal metabolomics method, 19 potential biomarkers were screened and their relative intensities in each group were compared. The results revealed G. jasminoides mainly regulated dysfunctions in phenylalanine metabolism, tryptophan metabolism, and secondary bile acid biosynthesis pathways induced by diabetes. The current study provides new insight for metabonomics methodology toward T2DM, and the results show that feces can preferably reflect the liver and intestines disorders.
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Affiliation(s)
- Yuan Zhou
- School of Pharmaceutical Sciences, Jilin University , Changchun 130012, China
- Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences , Wuhan 430071, China
| | - Lihui Men
- School of Pharmaceutical Sciences, Jilin University , Changchun 130012, China
| | - Zifeng Pi
- National Center for Mass Spectrometry in Changchun & Jilin Province Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, China
| | - Mengying Wei
- School of Pharmaceutical Sciences, Jilin University , Changchun 130012, China
| | - Fengrui Song
- National Center for Mass Spectrometry in Changchun & Jilin Province Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, China
| | - Chunfang Zhao
- School of Pharmaceutical Sciences, Jilin University , Changchun 130012, China
| | - Zhiqiang Liu
- National Center for Mass Spectrometry in Changchun & Jilin Province Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, China
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30
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Werth S, Müller-Fielitz H, Raasch W. Obesity-stimulated aldosterone release is not related to an S1P-dependent mechanism. J Endocrinol 2017; 235:251-265. [PMID: 28970286 DOI: 10.1530/joe-16-0550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 09/26/2017] [Indexed: 11/08/2022]
Abstract
Aldosterone has been identified as an important factor in obesity-associated hypertension. Here, we investigated whether sphingosine-1-phosphate (S1P), which has previously been linked to obesity, increases aldosterone release. S1P-induced aldosterone release was determined in NCI H295R cells in the presence of S1P receptor (S1PR) antagonists. In vivo release of S1P (100-300 µg/kgbw) was investigated in pithed, lean Sprague Dawley (SD) rats, diet-obese spontaneous hypertensive rats (SHRs), as well as in lean or obese Zucker rats. Aldosterone secretion was increased in NCI H295R cells by S1P, the selective S1PR1 agonist SEW2871 and the selective S1PR2 antagonist JTE013. Treatment with the S1PR1 antagonist W146 or fingolimod and the S1PR1/3 antagonist VPbib2319 decreased baseline and/or S1P-stimulated aldosterone release. Compared to saline-treated SD rats, plasma aldosterone increased by ~50 pg/mL after infusing S1P. Baseline levels of S1P and aldosterone were higher in obese than in lean SHRs. Adrenal S1PR expression did not differ between chow- or CD-fed rats that had the highest S1PR1 and lowest S1PR4 levels. S1P induced a short-lasting increase in plasma aldosterone in obese, but not in lean SHRs. However, 2-ANOVA did not demonstrate any difference between lean and obese rats. S1P-induced aldosterone release was also similar between obese and lean Zucker rats. We conclude that S1P is a local regulator of aldosterone production. S1PR1 agonism induces an increase in aldosterone secretion, while stimulating adrenal S1PR2 receptor suppresses aldosterone production. A significant role of S1P in influencing aldosterone secretion in states of obesity seems unlikely.
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Affiliation(s)
- Stephan Werth
- Institute of Experimental and Clinical Pharmacology and ToxicologyUniversity of Lübeck, Lübeck, Germany
| | - Helge Müller-Fielitz
- Institute of Experimental and Clinical Pharmacology and ToxicologyUniversity of Lübeck, Lübeck, Germany
- CBBM (Center of Brain, Behavior and Metabolism)Lübeck, Germany
| | - Walter Raasch
- Institute of Experimental and Clinical Pharmacology and ToxicologyUniversity of Lübeck, Lübeck, Germany
- CBBM (Center of Brain, Behavior and Metabolism)Lübeck, Germany
- DZHK (German Centre for Cardiovascular Research)partner site Hamburg/Kiel/Lübeck, Lübeck, Germany
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31
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The Role of Sphingosine-1-Phosphate and Ceramide-1-Phosphate in Inflammation and Cancer. Mediators Inflamm 2017; 2017:4806541. [PMID: 29269995 PMCID: PMC5705877 DOI: 10.1155/2017/4806541] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/01/2017] [Accepted: 08/30/2017] [Indexed: 01/02/2023] Open
Abstract
Inflammation is part of our body's response to tissue injury and pathogens. It helps to recruit various immune cells to the site of inflammation and activates the production of mediators to mobilize systemic protective processes. However, chronic inflammation can increase the risk of diseases like cancer. Apart from cytokines and chemokines, lipid mediators, particularly sphingosine-1-phosphate (S1P) and ceramide-1-phosphate (C1P), contribute to inflammation and cancer. S1P is an important player in inflammation-associated colon cancer progression. On the other hand, C1P has been recognized to be involved in cancer cell growth, migration, survival, and inflammation. However, whether C1P is involved in inflammation-associated cancer is not yet established. In contrast, few studies have also suggested that S1P and C1P are involved in anti-inflammatory pathways regulated in certain cell types. Ceramide is the substrate for ceramide kinase (CERK) to yield C1P, and sphingosine is phosphorylated to S1P by sphingosine kinases (SphKs). Biological functions of sphingolipid metabolites have been studied extensively. Ceramide is associated with cell growth inhibition and enhancement of apoptosis while S1P and C1P are associated with enhancement of cell growth and survival. Altogether, S1P and C1P are important regulators of ceramide level and cell fate. This review focuses on S1P and C1P involvement in inflammation and cancer with emphasis on recent progress in the field.
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Inhibition of central de novo ceramide synthesis restores insulin signaling in hypothalamus and enhances β-cell function of obese Zucker rats. Mol Metab 2017; 8:23-36. [PMID: 29233519 PMCID: PMC5985020 DOI: 10.1016/j.molmet.2017.10.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 10/17/2017] [Accepted: 10/27/2017] [Indexed: 12/29/2022] Open
Abstract
Objectives Hypothalamic lipotoxicity has been shown to induce central insulin resistance and dysregulation of glucose homeostasis; nevertheless, elucidation of the regulatory mechanisms remains incomplete. Here, we aimed to determine the role of de novo ceramide synthesis in hypothalamus on the onset of central insulin resistance and the dysregulation of glucose homeostasis induced by obesity. Methods Hypothalamic GT1-7 neuronal cells were treated with palmitate. De novo ceramide synthesis was inhibited either by pharmacological (myriocin) or molecular (si-Serine Palmitoyl Transferase 2, siSPT2) approaches. Obese Zucker rats (OZR) were intracerebroventricularly infused with myriocin to inhibit de novo ceramide synthesis. Insulin resistance was determined by quantification of Akt phosphorylation. Ceramide levels were quantified either by a radioactive kinase assay or by mass spectrometry analysis. Glucose homeostasis were evaluated in myriocin-treated OZR. Basal and glucose-stimulated parasympathetic tonus was recorded in OZR. Insulin secretion from islets and β-cell mass was also determined. Results We show that palmitate impaired insulin signaling and increased ceramide levels in hypothalamic neuronal GT1-7 cells. In addition, the use of deuterated palmitic acid demonstrated that palmitate activated several enzymes of the de novo ceramide synthesis pathway in hypothalamic cells. Importantly, myriocin and siSPT2 treatment restored insulin signaling in palmitate-treated GT1-7 cells. Protein kinase C (PKC) inhibitor or a dominant-negative PKCζ also counteracted palmitate-induced insulin resistance. Interestingly, attenuating the increase in levels of hypothalamic ceramides with intracerebroventricular infusion of myriocin in OZR improved their hypothalamic insulin-sensitivity. Importantly, central myriocin treatment partially restored glucose tolerance in OZR. This latter effect is related to the restoration of glucose-stimulated insulin secretion and an increase in β-cell mass of OZR. Electrophysiological recordings also showed an improvement of glucose-stimulated parasympathetic nerve activity in OZR centrally treated with myriocin. Conclusion Our results highlight a key role of hypothalamic de novo ceramide synthesis in central insulin resistance installation and glucose homeostasis dysregulation associated with obesity. de novo ceramide synthesis induces hypothalamic insulin resistance through PKCζ. Hypothalamic ceramides induce glucose homeostasis dysregulation seen with obesity. Hypothalamic ceramides mediate inhibition of insulin secretion induced by obesity. Hypothalamic ceramides decreases β cell mass in obese rats. Hypothalamic ceramides decreases parasympathetic tonus.
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Montgomery MK, Brown SHJ, Mitchell TW, Coster ACF, Cooney GJ, Turner N. Association of muscle lipidomic profile with high-fat diet-induced insulin resistance across five mouse strains. Sci Rep 2017; 7:13914. [PMID: 29066734 PMCID: PMC5654831 DOI: 10.1038/s41598-017-14214-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 10/05/2017] [Indexed: 12/20/2022] Open
Abstract
Different mouse strains exhibit variation in their inherent propensities to develop metabolic disease. We recently showed that C57BL6, 129X1, DBA/2 and FVB/N mice are all susceptible to high-fat diet-induced glucose intolerance, while BALB/c mice are relatively protected, despite changes in many factors linked with insulin resistance. One parameter strongly linked with insulin resistance is ectopic lipid accumulation, especially metabolically active ceramides and diacylglycerols (DAG). This study examined diet-induced changes in the skeletal muscle lipidome across these five mouse strains. High-fat feeding increased total muscle triacylglycerol (TAG) content, with elevations in similar triacylglycerol species observed for all strains. There were also generally consistent changes across strains in the abundance of different phospholipid (PL) classes and the fatty acid profile of phospholipid molecular species, with the exception being a strain-specific difference in phospholipid species containing two polyunsaturated fatty acyl chains in BALB/c mice (i.e. a diet-induced decrease in the other four strains, but no change in BALB/c mice). In contrast to TAG and PL, the high-fat diet had a minor influence on DAG and ceramide species across all strains. These results suggest that widespread alterations in muscle lipids are unlikely a major contributors to the favourable metabolic profile of BALB/c mice and rather there is a relatively conserved high-fat diet response in muscle of most mouse strains.
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Affiliation(s)
- Magdalene K Montgomery
- Department of Pharmacology, School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia
- Diabetes & Metabolism Division, Garvan Institute of Medical Research, Darlinghurst, NSW, Australia
| | - Simon H J Brown
- School of Medicine, University of Wollongong, Wollongong, NSW, Australia
- llawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Todd W Mitchell
- School of Medicine, University of Wollongong, Wollongong, NSW, Australia
- llawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
| | - Adelle C F Coster
- School of Mathematics and Statistics, University of New South Wales, Sydney, NSW, Australia
| | - Gregory J Cooney
- Diabetes & Metabolism Division, Garvan Institute of Medical Research, Darlinghurst, NSW, Australia
- St Vincent's Clinical School, University of New South Wales, Sydney, NSW, Australia
| | - Nigel Turner
- Department of Pharmacology, School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia.
- Diabetes & Metabolism Division, Garvan Institute of Medical Research, Darlinghurst, NSW, Australia.
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Cruciani-Guglielmacci C, López M, Campana M, le Stunff H. Brain Ceramide Metabolism in the Control of Energy Balance. Front Physiol 2017; 8:787. [PMID: 29075199 PMCID: PMC5643460 DOI: 10.3389/fphys.2017.00787] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 09/26/2017] [Indexed: 01/11/2023] Open
Abstract
The regulation of energy balance by the central nervous system (CNS) is a key actor of energy homeostasis in mammals, and deregulations of the fine mechanisms of nutrient sensing in the brain could lead to several metabolic diseases such as obesity and type 2 diabetes (T2D). Indeed, while neuronal activity primarily relies on glucose (lactate, pyruvate), the brain expresses at high level enzymes responsible for the transport, utilization and storage of lipids. It has been demonstrated that discrete neuronal networks in the hypothalamus have the ability to detect variation of circulating long chain fatty acids (FA) to regulate food intake and peripheral glucose metabolism. During a chronic lipid excess situation, this physiological lipid sensing is impaired contributing to type 2 diabetes in predisposed subjects. Recently, different studies suggested that ceramides levels could be involved in the regulation of energy balance in both hypothalamic and extra-hypothalamic areas. Moreover, under lipotoxic conditions, these ceramides could play a role in the dysregulation of glucose homeostasis. In this review we aimed at describing the potential role of ceramides metabolism in the brain in the physiological and pathophysiological control of energy balance.
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Affiliation(s)
- Céline Cruciani-Guglielmacci
- Unité de Biologie Fonctionnelle et Adaptative, Centre National de la Recherche Scientifique, Unité Mixte de Recherche, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
| | - Miguel López
- Department of Physiology, Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), Instituto de Investigación Sanitaria de Santiago de Compostela, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Mélanie Campana
- Unité de Biologie Fonctionnelle et Adaptative, Centre National de la Recherche Scientifique, Unité Mixte de Recherche, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
| | - Hervé le Stunff
- Unité de Biologie Fonctionnelle et Adaptative, Centre National de la Recherche Scientifique, Unité Mixte de Recherche, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France.,UMR9197 Institut des Neurosciences Paris Saclay (Neuro-PSI), Université Paris-Saclay, Saclay, France
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Abstract
Enlarged fat cells in obese adipose tissue diminish capacity to store fat and are resistant to the anti-lipolytic effect of insulin. Insulin resistance (IR)-associated S-nitrosylation of insulin-signaling proteins increases in obesity. In accordance with the inhibition of insulin-mediated anti-lipolytic action, plasma free fatty acid (FFA) levels increase. Additionally, endoplasmic reticulum stress stimuli induce lipolysis by activating cyclic adenosine monophosphate/Protein kinase A (cAMP/PKA) and extracellular signal-regulated kinase ½ (ERK1/2) signaling in adipocytes. Failure of packaging of excess lipid into lipid droplets causes chronic elevation of circulating fatty acids, which can reach to toxic levels within non-adipose tissues. Deleterious effects of lipid accumulation in non-adipose tissues are known as lipotoxicity. In fact, triglycerides may also serve a storage function for long-chain non-esterified fatty acids and their products such as ceramides and diacylglycerols (DAGs). Thus, excess DAG, ceramide and saturated fatty acids in obesity can induce chronic inflammation and have harmful effect on multiple organs and systems. In this context, chronic adipose tissue inflammation, mitochondrial dysfunction and IR have been discussed within the scope of lipotoxicity.
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Cruciani-Guglielmacci C, Bellini L, Denom J, Oshima M, Fernandez N, Normandie-Levi P, Berney XP, Kassis N, Rouch C, Dairou J, Gorman T, Smith DM, Marley A, Liechti R, Kuznetsov D, Wigger L, Burdet F, Lefèvre AL, Wehrle I, Uphues I, Hildebrandt T, Rust W, Bernard C, Ktorza A, Rutter GA, Scharfmann R, Xenarios I, Le Stunff H, Thorens B, Magnan C, Ibberson M. Molecular phenotyping of multiple mouse strains under metabolic challenge uncovers a role for Elovl2 in glucose-induced insulin secretion. Mol Metab 2017; 6:340-351. [PMID: 28377873 PMCID: PMC5369210 DOI: 10.1016/j.molmet.2017.01.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 01/16/2017] [Accepted: 01/20/2017] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE In type 2 diabetes (T2D), pancreatic β cells become progressively dysfunctional, leading to a decline in insulin secretion over time. In this study, we aimed to identify key genes involved in pancreatic beta cell dysfunction by analyzing multiple mouse strains in parallel under metabolic stress. METHODS Male mice from six commonly used non-diabetic mouse strains were fed a high fat or regular chow diet for three months. Pancreatic islets were extracted and phenotypic measurements were recorded at 2 days, 10 days, 30 days, and 90 days to assess diabetes progression. RNA-Seq was performed on islet tissue at each time-point and integrated with the phenotypic data in a network-based analysis. RESULTS A module of co-expressed genes was selected for further investigation as it showed the strongest correlation to insulin secretion and oral glucose tolerance phenotypes. One of the predicted network hub genes was Elovl2, encoding Elongase of very long chain fatty acids 2. Elovl2 silencing decreased glucose-stimulated insulin secretion in mouse and human β cell lines. CONCLUSION Our results suggest a role for Elovl2 in ensuring normal insulin secretory responses to glucose. Moreover, the large comprehensive dataset and integrative network-based approach provides a new resource to dissect the molecular etiology of β cell failure under metabolic stress.
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Affiliation(s)
- Céline Cruciani-Guglielmacci
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France
| | - Lara Bellini
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France
| | - Jessica Denom
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France
| | - Masaya Oshima
- INSERM U1016, Université Paris-Descartes, Institut Cochin, Paris, France
| | - Neïké Fernandez
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France
| | - Priscilla Normandie-Levi
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France
| | - Xavier P Berney
- Centre for Integrative Genomics, University of Lausanne, 1015 Lausanne, Switzerland
| | - Nadim Kassis
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France
| | - Claude Rouch
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France
| | - Julien Dairou
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France
| | - Tracy Gorman
- Discovery Sciences, Innovative Medicines & Early Development Biotech Unit, AstraZeneca, Cambridge Science Park, Milton Road, Cambridge CB4 0WG, UK
| | - David M Smith
- Discovery Sciences, Innovative Medicines & Early Development Biotech Unit, AstraZeneca, Cambridge Science Park, Milton Road, Cambridge CB4 0WG, UK
| | - Anna Marley
- Discovery Sciences, Innovative Medicines & Early Development Biotech Unit, AstraZeneca, Cambridge Science Park, Milton Road, Cambridge CB4 0WG, UK
| | - Robin Liechti
- Vital-IT Group, SIB Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland
| | - Dmitry Kuznetsov
- Vital-IT Group, SIB Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland
| | - Leonore Wigger
- Vital-IT Group, SIB Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland
| | - Frédéric Burdet
- Vital-IT Group, SIB Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland
| | - Anne-Laure Lefèvre
- Recherche de Découverte, PIT Métabolisme, IdRS, 11 rue des Moulineaux, 92150 Suresnes, France
| | - Isabelle Wehrle
- Recherche de Découverte, PIT Métabolisme, IdRS, 11 rue des Moulineaux, 92150 Suresnes, France
| | - Ingo Uphues
- Boehringer Ingelheim Pharma GmbH & Co, KG 88400 Biberach, Germany
| | | | - Werner Rust
- Boehringer Ingelheim Pharma GmbH & Co, KG 88400 Biberach, Germany
| | - Catherine Bernard
- Recherche de Découverte, PIT Métabolisme, IdRS, 11 rue des Moulineaux, 92150 Suresnes, France
| | - Alain Ktorza
- Recherche de Découverte, PIT Métabolisme, IdRS, 11 rue des Moulineaux, 92150 Suresnes, France
| | - Guy A Rutter
- Section of Cell Biology and Functional Genomics, Department of Medicine, Imperial College London, London W120NN, UK
| | - Raphael Scharfmann
- INSERM U1016, Université Paris-Descartes, Institut Cochin, Paris, France
| | - Ioannis Xenarios
- Vital-IT Group, SIB Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland
| | - Hervé Le Stunff
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France; I2BC - UMR 9198 Université Paris Sud, Gif sur Yvette, France
| | - Bernard Thorens
- Centre for Integrative Genomics, University of Lausanne, 1015 Lausanne, Switzerland
| | - Christophe Magnan
- Unité de Biologie Fonctionnelle et Adaptative, Sorbonne Paris Cité, CNRS UMR 8251, Université Paris Diderot, Paris, France.
| | - Mark Ibberson
- Vital-IT Group, SIB Swiss Institute of Bioinformatics, 1015 Lausanne, Switzerland.
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Mendelson MM, Marioni RE, Joehanes R, Liu C, Hedman ÅK, Aslibekyan S, Demerath EW, Guan W, Zhi D, Yao C, Huan T, Willinger C, Chen B, Courchesne P, Multhaup M, Irvin MR, Cohain A, Schadt EE, Grove ML, Bressler J, North K, Sundström J, Gustafsson S, Shah S, McRae AF, Harris SE, Gibson J, Redmond P, Corley J, Murphy L, Starr JM, Kleinbrink E, Lipovich L, Visscher PM, Wray NR, Krauss RM, Fallin D, Feinberg A, Absher DM, Fornage M, Pankow JS, Lind L, Fox C, Ingelsson E, Arnett DK, Boerwinkle E, Liang L, Levy D, Deary IJ. Association of Body Mass Index with DNA Methylation and Gene Expression in Blood Cells and Relations to Cardiometabolic Disease: A Mendelian Randomization Approach. PLoS Med 2017; 14:e1002215. [PMID: 28095459 PMCID: PMC5240936 DOI: 10.1371/journal.pmed.1002215] [Citation(s) in RCA: 202] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 12/08/2016] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The link between DNA methylation, obesity, and adiposity-related diseases in the general population remains uncertain. METHODS AND FINDINGS We conducted an association study of body mass index (BMI) and differential methylation for over 400,000 CpGs assayed by microarray in whole-blood-derived DNA from 3,743 participants in the Framingham Heart Study and the Lothian Birth Cohorts, with independent replication in three external cohorts of 4,055 participants. We examined variations in whole blood gene expression and conducted Mendelian randomization analyses to investigate the functional and clinical relevance of the findings. We identified novel and previously reported BMI-related differential methylation at 83 CpGs that replicated across cohorts; BMI-related differential methylation was associated with concurrent changes in the expression of genes in lipid metabolism pathways. Genetic instrumental variable analysis of alterations in methylation at one of the 83 replicated CpGs, cg11024682 (intronic to sterol regulatory element binding transcription factor 1 [SREBF1]), demonstrated links to BMI, adiposity-related traits, and coronary artery disease. Independent genetic instruments for expression of SREBF1 supported the findings linking methylation to adiposity and cardiometabolic disease. Methylation at a substantial proportion (16 of 83) of the identified loci was found to be secondary to differences in BMI. However, the cross-sectional nature of the data limits definitive causal determination. CONCLUSIONS We present robust associations of BMI with differential DNA methylation at numerous loci in blood cells. BMI-related DNA methylation and gene expression provide mechanistic insights into the relationship between DNA methylation, obesity, and adiposity-related diseases.
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Affiliation(s)
- Michael M. Mendelson
- Framingham Heart Study, Framingham, Massachusetts, United States of America
- Boston University School of Medicine, Boston, Massachusetts, United States of America
- Department of Cardiology, Boston Children’s Hospital, Boston, Massachusetts, United States of America
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Riccardo E. Marioni
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom
- Medical Genetics Section, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
- Queensland Brain Institute, University of Queensland, Brisbane, Queensland, Australia
| | - Roby Joehanes
- Framingham Heart Study, Framingham, Massachusetts, United States of America
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Hebrew SeniorLife, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Chunyu Liu
- Framingham Heart Study, Framingham, Massachusetts, United States of America
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- Department of Biostatistics, Boston University, Boston, Massachusetts, United States of America
| | - Åsa K. Hedman
- Molecular Epidemiology and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Stella Aslibekyan
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Ellen W. Demerath
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Weihua Guan
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Degui Zhi
- Department of Biostatistics, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Chen Yao
- Framingham Heart Study, Framingham, Massachusetts, United States of America
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Tianxiao Huan
- Framingham Heart Study, Framingham, Massachusetts, United States of America
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Christine Willinger
- Framingham Heart Study, Framingham, Massachusetts, United States of America
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Brian Chen
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Paul Courchesne
- Framingham Heart Study, Framingham, Massachusetts, United States of America
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Michael Multhaup
- Center for Epigenetics, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Marguerite R. Irvin
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Ariella Cohain
- Icahn Institute for Genomics and Multiscale Biology and Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Eric E. Schadt
- Icahn Institute for Genomics and Multiscale Biology and Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Megan L. Grove
- Human Genetics Center, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Jan Bressler
- Human Genetics Center, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Kari North
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Johan Sundström
- Cardiovascular Epidemiology, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Stefan Gustafsson
- Molecular Epidemiology and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Sonia Shah
- Queensland Brain Institute, University of Queensland, Brisbane, Queensland, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia
| | - Allan F. McRae
- Queensland Brain Institute, University of Queensland, Brisbane, Queensland, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia
| | - Sarah E. Harris
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom
- Medical Genetics Section, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Jude Gibson
- Wellcome Trust Clinical Research Facility, Western General Hospital, University of Edinburgh, Edinburgh, United Kingdom
| | - Paul Redmond
- Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom
| | - Janie Corley
- Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom
| | - Lee Murphy
- Wellcome Trust Clinical Research Facility, Western General Hospital, University of Edinburgh, Edinburgh, United Kingdom
| | - John M. Starr
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom
- Alzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh, United Kingdom
| | - Erica Kleinbrink
- Center for Molecular Medicine and Genetics and Department of Neurology, Wayne State University, Detroit, Michigan, United States of America
| | - Leonard Lipovich
- Center for Molecular Medicine and Genetics and Department of Neurology, Wayne State University, Detroit, Michigan, United States of America
| | - Peter M. Visscher
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom
- Queensland Brain Institute, University of Queensland, Brisbane, Queensland, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia
| | - Naomi R. Wray
- Queensland Brain Institute, University of Queensland, Brisbane, Queensland, Australia
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland, Australia
| | - Ronald M. Krauss
- Children’s Hospital Oakland Research Institute, Oakland, California, United States of America
| | - Daniele Fallin
- Center for Epigenetics, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Andrew Feinberg
- Center for Epigenetics, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America
| | - Devin M. Absher
- HudsonAlpha Institute for Biotechnology, Huntsville, Alabama, United States of America
| | - Myriam Fornage
- Human Genetics Center, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
- Brown Foundation Institute of Molecular Medicine, University of Texas, Houston, Texas, United States of America
| | - James S. Pankow
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Lars Lind
- Cardiovascular Epidemiology, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Caroline Fox
- Framingham Heart Study, Framingham, Massachusetts, United States of America
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Erik Ingelsson
- Molecular Epidemiology and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, California, United States of America
| | - Donna K. Arnett
- College of Public Health, University of Kentucky, Lexington, Kentucky, United States of America
| | - Eric Boerwinkle
- Human Genetics Center, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas, United States of America
| | - Liming Liang
- Departments of Epidemiology and Biostatistics, School of Public Health, Harvard University, Boston, Massachusetts, United States of America
| | - Daniel Levy
- Framingham Heart Study, Framingham, Massachusetts, United States of America
- Population Sciences Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
| | - Ian J. Deary
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom
- Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom
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Pruvost R, Le Stunff H. [Sphingosine kinase-1: role in non alcoholic fatty liver disease]. Med Sci (Paris) 2016; 32:716-8. [PMID: 27615179 DOI: 10.1051/medsci/20163208018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Roxane Pruvost
- M1 Biologie Santé, Université Paris-Saclay, 91405 Orsay, France
| | - Hervé Le Stunff
- Université Paris-Saclay, I2BC (Institut de biologie intégrative de la cellule), CNRS UMR 9198, Gif-sur-Yvette, France ; Université Paris Diderot, unité BFA (unité de biologie fonctionnelle et adaptative) - CNRS UMR 8251, Paris, France
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Hage Hassan R, Pacheco de Sousa AC, Mahfouz R, Hainault I, Blachnio-Zabielska A, Bourron O, Koskas F, Górski J, Ferré P, Foufelle F, Hajduch E. Sustained Action of Ceramide on the Insulin Signaling Pathway in Muscle Cells: IMPLICATION OF THE DOUBLE-STRANDED RNA-ACTIVATED PROTEIN KINASE. J Biol Chem 2015; 291:3019-29. [PMID: 26698173 DOI: 10.1074/jbc.m115.686949] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Indexed: 11/06/2022] Open
Abstract
In vivo, ectopic accumulation of fatty acids in muscles leads to alterations in insulin signaling at both the IRS1 and Akt steps. However, in vitro treatments with saturated fatty acids or their derivative ceramide demonstrate an effect only at the Akt step. In this study, we adapted our experimental procedures to mimic the in vivo situation and show that the double-stranded RNA-dependent protein kinase (PKR) is involved in the long-term effects of saturated fatty acids on IRS1. C2C12 or human muscle cells were incubated with palmitate or directly with ceramide for short or long periods, and insulin signaling pathway activity was evaluated. PKR involvement was assessed through pharmacological and genetic studies. Short-term treatments of myotubes with palmitate, a ceramide precursor, or directly with ceramide induce an inhibition of Akt, whereas prolonged periods of treatment show an additive inhibition of insulin signaling through increased IRS1 serine 307 phosphorylation. PKR mRNA, protein, and phosphorylation are increased in insulin-resistant muscles. When PKR activity is reduced (siRNA or a pharmacological inhibitor), serine phosphorylation of IRS1 is reduced, and insulin-induced phosphorylation of Akt is improved. Finally, we show that JNK mediates ceramide-activated PKR inhibitory action on IRS1. Together, in the long term, our results show that ceramide acts at two distinct levels of the insulin signaling pathway (IRS1 and Akt). PKR, which is induced by both inflammation signals and ceramide, could play a major role in the development of insulin resistance in muscle cells.
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Affiliation(s)
- Rima Hage Hassan
- From INSERM, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Université Paris Descartes, Sorbonne Paris Cité, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France
| | - Ana Catarina Pacheco de Sousa
- From INSERM, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Université Paris Descartes, Sorbonne Paris Cité, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France
| | - Rana Mahfouz
- From INSERM, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Université Paris Descartes, Sorbonne Paris Cité, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France
| | - Isabelle Hainault
- From INSERM, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Université Paris Descartes, Sorbonne Paris Cité, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France
| | - Agnieszka Blachnio-Zabielska
- Department of Physiology, Medical University of Bialystok, 15-222 Bialystok, Poland, Assistance Publique-Hôpitaux de Paris
| | - Olivier Bourron
- From INSERM, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Université Paris Descartes, Sorbonne Paris Cité, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Département de Diabétologie et Maladies Métaboliques and
| | - Fabien Koskas
- Service de Chirurgie Vasculaire,Hôpital Pitié-Salpêtrière, 75013 Paris, France
| | - Jan Górski
- Department of Physiology, Medical University of Bialystok, 15-222 Bialystok, Poland, Assistance Publique-Hôpitaux de Paris
| | - Pascal Ferré
- From INSERM, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Université Paris Descartes, Sorbonne Paris Cité, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France
| | - Fabienne Foufelle
- From INSERM, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Université Paris Descartes, Sorbonne Paris Cité, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France
| | - Eric Hajduch
- From INSERM, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Sorbonne Universités, Université Pierre et Marie Curie Paris 06, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France, Université Paris Descartes, Sorbonne Paris Cité, Unité Mixte de Recherche_S 1138, Centre de Recherche des Cordeliers, 75006 Paris, France,
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