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Schengrund CL. Sphingolipids: Less Enigmatic but Still Many Questions about the Role(s) of Ceramide in the Synthesis/Function of the Ganglioside Class of Glycosphingolipids. Int J Mol Sci 2024; 25:6312. [PMID: 38928016 PMCID: PMC11203820 DOI: 10.3390/ijms25126312] [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: 04/23/2024] [Revised: 05/17/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024] Open
Abstract
While much has been learned about sphingolipids, originally named for their sphinx-like enigmatic properties, there are still many unanswered questions about the possible effect(s) of the composition of ceramide on the synthesis and/or behavior of a glycosphingolipid (GSL). Over time, studies of their ceramide component, the sphingoid base containing the lipid moiety of GSLs, were frequently distinct from those performed to ascertain the roles of the carbohydrate moieties. Due to the number of classes of GSLs that can be derived from ceramide, this review focuses on the possible role(s) of ceramide in the synthesis/function of just one GSL class, derived from glucosylceramide (Glc-Cer), namely sialylated ganglio derivatives, initially characterized and named gangliosides (GGs) due to their presence in ganglion cells. While much is known about their synthesis and function, much is still being learned. For example, it is only within the last 15-20 years or so that the mechanism by which the fatty acyl component of ceramide affected its transport to different sites in the Golgi, where it is used for the synthesis of Glu- or galactosyl-Cer (Gal-Cer) and more complex GSLs, was defined. Still to be fully addressed are questions such as (1) whether ceramide composition affects the transport of partially glycosylated GSLs to sites where their carbohydrate chain can be elongated or affects the activity of glycosyl transferases catalyzing that elongation; (2) what controls the differences seen in the ceramide composition of GGs that have identical carbohydrate compositions but vary in that of their ceramide and vice versa; (3) how alterations in ceramide composition affect the function of membrane GGs; and (4) how this knowledge might be applied to the development of therapies for treating diseases that correlate with abnormal expression of GGs. The availability of an updatable data bank of complete structures for individual classes of GSLs found in normal tissues as well as those associated with disease would facilitate research in this area.
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Affiliation(s)
- Cara-Lynne Schengrund
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
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2
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Castro R, Kalecký K, Huang NK, Petersen K, Singh V, Ross AC, Neuberger T, Bottiglieri T. A very-low carbohydrate content in a high-fat diet modifies the plasma metabolome and impacts systemic inflammation and experimental atherosclerosis. J Nutr Biochem 2024; 126:109562. [PMID: 38176626 DOI: 10.1016/j.jnutbio.2023.109562] [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: 07/21/2023] [Revised: 12/08/2023] [Accepted: 12/31/2023] [Indexed: 01/06/2024]
Abstract
Ketogenic diets (KDs) are very high-fat low-carbohydrate diets that promote nutritional ketosis and are widely used for weight loss, although concerns about potential adverse cardiovascular effects remain. We investigated a very high-fat KD's vascular impact and plasma metabolic signature compared to a non-ketogenic high-fat diet (HFD). Apolipoprotein E deficient (ApoE -/-) mice were fed a KD (%kcal:81:1:18, fat/carbohydrate/protein), a non-ketogenic high-fat diet with half of the fat content (HFD) (%kcal:40:42:18, fat/carbohydrate/protein) for 12 weeks. Plasma samples were used to quantify the major ketone body beta-hydroxybutyrate (BHB) and several pro-inflammatory cytokines (IL-6, MCP-1, MIP-1alpha, and TNF alpha), and to targeted metabolomic profiling by mass spectrometry. In addition, aortic atherosclerotic lesions were quantified ex-vivo by magnetic resonance imaging (MRI) on a 14-tesla system. KD was atherogenic when compared to the control diet, but KD mice, when compared to the HFD group (1) had markedly higher levels of BHB and lower levels of cytokines, confirming the presence of ketosis that alleviated the well-established fat-induced systemic inflammation; (2) displayed significant changes in the plasma metabolome that included a decrease in lipophilic metabolites and an increase in hydrophilic metabolites; (3) had significantly lower levels of several atherogenic lipid metabolites, including phosphatidylcholines, cholesterol esters, sphingomyelins, and ceramides; and (4) presented significantly lower aortic plaque burden. KD was atherogenic and was associated with specific metabolic changes but alleviated the fat-induced inflammation and lessened the progression of atherosclerosis when compared to the HFD.
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Affiliation(s)
- Rita Castro
- Department of Nutritional Sciences, Penn State University, University Park, Pennsylvania, USA; Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal.
| | - Karel Kalecký
- Institute of Biomedical Studies, Baylor University, Waco, Texas, USA; Center of Metabolomics, Institute of Metabolic Disease, Baylor Scott and White Research Institute, Dallas, Texas, USA
| | - Neil K Huang
- Department of Nutritional Sciences, Penn State University, University Park, Pennsylvania, USA; Jean Mayer USDA Human Nutrition Research Center on Aging, Cardiovascular Nutrition Laboratory, Tufts University, Boston, Massachusetts, USA
| | - Kristina Petersen
- Department of Nutritional Sciences, Penn State University, University Park, Pennsylvania, USA
| | - Vishal Singh
- Department of Nutritional Sciences, Penn State University, University Park, Pennsylvania, USA
| | - A Catharine Ross
- Department of Nutritional Sciences, Penn State University, University Park, Pennsylvania, USA
| | - Thomas Neuberger
- Huck Institutes of the Life Sciences, Penn State University, University Park, Pennsylvania, USA; Department of Biomedical Engineering, Penn State University, University Park, Pennsylvania, USA
| | - Teodoro Bottiglieri
- Center of Metabolomics, Institute of Metabolic Disease, Baylor Scott and White Research Institute, Dallas, Texas, USA
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Peng L, Guo Y, Gerhard M, Gao JJ, Liu ZC, Mejías-Luque R, Zhang L, Vieth M, Ma JL, Liu WD, Li ZX, Zhou T, Li WQ, You WC, Zhang Y, Pan KF. Metabolite Alterations and Interactions with Microbiota in Helicobacter pylori-Associated Gastric Lesions. Microbiol Spectr 2023; 11:e0534722. [PMID: 37358459 PMCID: PMC10434277 DOI: 10.1128/spectrum.05347-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 06/05/2023] [Indexed: 06/27/2023] Open
Abstract
Metabolites and their interactions with microbiota may be involved in Helicobacter pylori-associated gastric lesion development. This study aimed to explore metabolite alterations upon H. pylori eradication and possible roles of microbiota-metabolite interactions in progression of precancerous lesions. Targeted metabolomics assays and 16S rRNA gene sequencing were conducted to investigate metabolic and microbial alterations of paired gastric biopsy specimens in 58 subjects with successful and 57 subjects with failed anti-H. pylori treatment. Integrative analyses were performed by combining the metabolomics and microbiome profiles from the same intervention participants. A total of 81 metabolites were significantly altered after successful eradication compared to failed treatment, including acylcarnitines, ceramides, triacylglycerol, cholesterol esters, fatty acid, sphingolipids, glycerophospholipids, and glycosylceramides, with P values of <0.05 for all. The differential metabolites showed significant correlations with microbiota in baseline biopsy specimens, such as negative correlations between Helicobacter and glycerophospholipids, glycosylceramide, and triacylglycerol (P < 0.05 for all), which were altered by eradication. The characteristic negative correlations between glycosylceramides and Fusobacterium, Streptococcus, and Gemella in H. pylori-positive baseline biopsy specimens were further noticed in active gastritis and intestinal metaplasia (P < 0.05 for all). A panel including differential metabolites, genera, and their interactions may help to discriminate high-risk subjects who progressed from mild to advanced precancerous lesions in short-term and long-term follow-up periods with areas under the curve (AUC) of 0.914 and 0.801, respectively. Therefore, our findings provide new insights into the metabolites and microbiota interactions in H. pylori-associated gastric lesion progression. IMPORTANCE In this study, a panel was established including differential metabolites, genera, and their interactions, which may help to discriminate high-risk subjects for progression from mild lesions to advanced precancerous lesions in short-term and long-term follow-up.
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Affiliation(s)
- Lei Peng
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Yang Guo
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Markus Gerhard
- PYLOTUM Key Joint Laboratory for Upper GI Cancer, Technische Universität München, Munich, Germany, and Peking University Cancer Hospital & Institute, Beijing, China
- Institute for Medical Microbiology, Immunology and Hygiene, Technische Universität München, Munich, Germany
- German Center for Infection Research, Partner Site Munich, Munich, Germany
| | - Juan-Juan Gao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Zong-Chao Liu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Raquel Mejías-Luque
- PYLOTUM Key Joint Laboratory for Upper GI Cancer, Technische Universität München, Munich, Germany, and Peking University Cancer Hospital & Institute, Beijing, China
- Institute for Medical Microbiology, Immunology and Hygiene, Technische Universität München, Munich, Germany
- German Center for Infection Research, Partner Site Munich, Munich, Germany
| | - Lian Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Michael Vieth
- PYLOTUM Key Joint Laboratory for Upper GI Cancer, Technische Universität München, Munich, Germany, and Peking University Cancer Hospital & Institute, Beijing, China
- Institute of Pathology, Klinikum Bayreuth, Bayreuth, Germany
| | - Jun-Ling Ma
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Wei-Dong Liu
- Linqu Public Health Bureau, Linqu, Shandong, China
| | - Zhe-Xuan Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
- PYLOTUM Key Joint Laboratory for Upper GI Cancer, Technische Universität München, Munich, Germany, and Peking University Cancer Hospital & Institute, Beijing, China
| | - Tong Zhou
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
| | - Wen-Qing Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
- PYLOTUM Key Joint Laboratory for Upper GI Cancer, Technische Universität München, Munich, Germany, and Peking University Cancer Hospital & Institute, Beijing, China
| | - Wei-Cheng You
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
- PYLOTUM Key Joint Laboratory for Upper GI Cancer, Technische Universität München, Munich, Germany, and Peking University Cancer Hospital & Institute, Beijing, China
| | - Yang Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
- PYLOTUM Key Joint Laboratory for Upper GI Cancer, Technische Universität München, Munich, Germany, and Peking University Cancer Hospital & Institute, Beijing, China
| | - Kai-Feng Pan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Cancer Epidemiology, Peking University Cancer Hospital & Institute, Beijing, China
- PYLOTUM Key Joint Laboratory for Upper GI Cancer, Technische Universität München, Munich, Germany, and Peking University Cancer Hospital & Institute, Beijing, China
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Zoicas I, Mühle C, Schumacher F, Kleuser B, Kornhuber J. Development of Comorbid Depression after Social Fear Conditioning in Mice and Its Effects on Brain Sphingolipid Metabolism. Cells 2023; 12:1355. [PMID: 37408189 DOI: 10.3390/cells12101355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/18/2023] [Accepted: 05/05/2023] [Indexed: 07/07/2023] Open
Abstract
Currently, there are no animal models for studying both specific social fear and social fear with comorbidities. Here, we investigated whether social fear conditioning (SFC), an animal model with face, predictive and construct validity for social anxiety disorder (SAD), leads to the development of comorbidities at a later stage over the course of the disease and how this affects the brain sphingolipid metabolism. SFC altered both the emotional behavior and the brain sphingolipid metabolism in a time-point-dependent manner. While social fear was not accompanied by changes in non-social anxiety-like and depressive-like behavior for at least two to three weeks, a comorbid depressive-like behavior developed five weeks after SFC. These different pathologies were accompanied by different alterations in the brain sphingolipid metabolism. Specific social fear was accompanied by increased activity of ceramidases in the ventral hippocampus and ventral mesencephalon and by small changes in sphingolipid levels in the dorsal hippocampus. Social fear with comorbid depression, however, altered the activity of sphingomyelinases and ceramidases as well as the sphingolipid levels and sphingolipid ratios in most of the investigated brain regions. This suggests that changes in the brain sphingolipid metabolism might be related to the short- and long-term pathophysiology of SAD.
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Affiliation(s)
- Iulia Zoicas
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Christiane Mühle
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Fabian Schumacher
- Institute of Pharmacy, Freie Universität Berlin, 14195 Berlin, Germany
| | - Burkhard Kleuser
- Institute of Pharmacy, Freie Universität Berlin, 14195 Berlin, Germany
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
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5
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van Echten-Deckert G. The role of sphingosine 1-phosphate metabolism in brain health and disease. Pharmacol Ther 2023; 244:108381. [PMID: 36907249 DOI: 10.1016/j.pharmthera.2023.108381] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/02/2023] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
Lipids are essential structural and functional components of the central nervous system (CNS). Sphingolipids are ubiquitous membrane components which were discovered in the brain in the late 19th century. In mammals, the brain contains the highest concentration of sphingolipids in the body. Sphingosine 1-phosphate (S1P) derived from membrane sphingolipids evokes multiple cellular responses which, depending on its concentration and localization, make S1P a double-edged sword in the brain. In the present review we highlight the role of S1P in brain development and focus on the often contrasting findings regarding its contributions to the initiation, progression and potential recovery of different brain pathologies, including neurodegeneration, multiple sclerosis (MS), brain cancers, and psychiatric illnesses. A detailed understanding of the critical implications of S1P in brain health and disease may open the door for new therapeutic options. Thus, targeting S1P-metabolizing enzymes and/or signaling pathways might help overcome, or at least ameliorate, several brain illnesses.
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6
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Caterino M, Fedele R, Carnovale V, Castaldo A, Gelzo M, Iacotucci P, Ruoppolo M, Castaldo G. Lipidomic alterations in human saliva from cystic fibrosis patients. Sci Rep 2023; 13:600. [PMID: 36635275 PMCID: PMC9837121 DOI: 10.1038/s41598-022-24429-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 11/15/2022] [Indexed: 01/14/2023] Open
Abstract
Cystic fibrosis is a hereditary metabolic disorder characterized by impaired traffic of chloride ions and water through membranes of the respiratory and gastrointestinal, that causes inadequate hydration of airway surfaces, dehydrated mucous secretions and a high-sodium chloride sweat. Although the classical presentation of the condition is well known, a better characterization of metabolic alterations related is need. In particular, the metabolic composition alterations of biological fluids may be influence by the disease state and could be captured as putative signature to set targeted therapeutic strategies. A targeted comprehensive mass spectrometry-based platform was employed to dissect the lipid content of saliva samples form CF patients, in order to investigate alterations in the lipid metabolic homeostasis related to the pathology, chronic obstructive pulmonary disease, Pseudomonas Aeruginosa infection, pancreatic insufficiency, liver disfunction and diabetes-related complications.
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Affiliation(s)
- Marianna Caterino
- grid.4691.a0000 0001 0790 385XDepartment of Molecular Medicine and Medical Biotechnology, School of Medicine, University of Naples Federico II, 80131 Naples, Italy ,grid.511947.f0000 0004 1758 0953CEINGE - Biotecnologie Avanzate F. Salvatore, s.c.ar.l, 80145 Napoli, Italy
| | - Roberta Fedele
- grid.511947.f0000 0004 1758 0953CEINGE - Biotecnologie Avanzate F. Salvatore, s.c.ar.l, 80145 Napoli, Italy
| | - Vincenzo Carnovale
- grid.4691.a0000 0001 0790 385XDepartment of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Alice Castaldo
- grid.4691.a0000 0001 0790 385XDepartment of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Monica Gelzo
- grid.4691.a0000 0001 0790 385XDepartment of Molecular Medicine and Medical Biotechnology, School of Medicine, University of Naples Federico II, 80131 Naples, Italy ,grid.511947.f0000 0004 1758 0953CEINGE - Biotecnologie Avanzate F. Salvatore, s.c.ar.l, 80145 Napoli, Italy
| | - Paola Iacotucci
- grid.4691.a0000 0001 0790 385XDepartment of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Margherita Ruoppolo
- Department of Molecular Medicine and Medical Biotechnology, School of Medicine, University of Naples Federico II, 80131, Naples, Italy. .,CEINGE - Biotecnologie Avanzate F. Salvatore, s.c.ar.l, 80145, Napoli, Italy.
| | - Giuseppe Castaldo
- grid.4691.a0000 0001 0790 385XDepartment of Molecular Medicine and Medical Biotechnology, School of Medicine, University of Naples Federico II, 80131 Naples, Italy ,grid.511947.f0000 0004 1758 0953CEINGE - Biotecnologie Avanzate F. Salvatore, s.c.ar.l, 80145 Napoli, Italy
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7
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Presence of Ceramidase Activity in Electronegative LDL. Int J Mol Sci 2022; 24:ijms24010165. [PMID: 36613609 PMCID: PMC9820682 DOI: 10.3390/ijms24010165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/25/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
Electronegative low-density lipoprotein (LDL(-)) is a minor modified fraction of human plasma LDL with several atherogenic properties. Among them is increased bioactive lipid mediator content, such as lysophosphatidylcholine (LPC), non-esterified fatty acids (NEFA), ceramide (Cer), and sphingosine (Sph), which are related to the presence of some phospholipolytic activities, including platelet-activating factor acetylhydrolase (PAF-AH), phospholipase C (PLC), and sphingomyelinase (SMase), in LDL(-). However, these enzymes' activities do not explain the increased Sph content, which typically derives from Cer degradation. In the present study, we analyzed the putative presence of ceramidase (CDase) activity, which could explain the increased Sph content. Thin layer chromatography (TLC) and lipidomic analysis showed that Cer, Sph, and NEFA spontaneously increased in LDL(-) incubated alone at 37 °C, in contrast with native LDL(+). An inhibitor of neutral CDase prevented the formation of Sph and, in turn, increased Cer content in LDL(-). In addition, LDL(-) efficiently degraded fluorescently labeled Cer (NBD-Cer) to form Sph and NEFA. These observations defend the existence of the CDase-like activity's association with LDL(-). However, neither the proteomic analysis nor the Western blot detected the presence of an enzyme with known CDase activity. Further studies are thus warranted to define the origin of the CDase-like activity detected in LDL(-).
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miR-196a-5p Correlates with Chronic Atrophic Gastritis Progression to Gastric Cancer and Induces Malignant Biological Behaviors of Gastric Cancer Cells by Targeting ACER2. Mol Biotechnol 2022:10.1007/s12033-022-00589-8. [PMID: 36513872 DOI: 10.1007/s12033-022-00589-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 10/19/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND As the prognosis of early gastric cancer (EGC) is significantly better than that of advanced gastric cancer (AGC), the development of biomarkers to monitor the progression of chronic atrophic gastritis (CAG) to gastric cancer (GC) is essential. METHODS Stomach tissue miRNA and mRNA sequences from patients with chronic non-atrophic gastritis (CNAG), CAG, precancerous lesions of gastric cancer (PLGC), and GC were analyzed. A publicly available GC-related miRNA microarray dataset was obtained from the Gene Expression Omnibus database. Spearman's correlation and differential gene analyses, and clinical validation were used to identify novel miRNAs correlating with CAG progression to GC. miRNA targets were predicted using weighted gene co-expression analysis and databases. A dual-luciferase reporter assay was performed to check for direct interaction between miR-196a-5p and ACER2. The CCK-8 and wound healing assays, and flow cytometry were performed to evaluate cell proliferation, migration, and apoptosis. RESULTS miR-196a-5p was correlated with CAG progression to GC. Overexpression of miR-196a-5p promoted GC cell proliferation and migration and inhibited apoptosis, whereas suppression of miR-196a-5p exerted the opposite effect. Based on the prediction and luciferase assays, ACER2 was identified as the target of miR-196a-5p. ACER2 was downregulated in GC cell lines. Knockdown of ACER2 increased GC cell proliferation rates and migration ability and inhibited apoptosis, while ACER2 overexpression led to the opposite effect. CONCLUSIONS miR-196a-5p correlated with CAG progression to GC and induced malignant biological behaviors of GC cells by targeting ACER2, providing a novel monitoring biomarker and target for GC prevention.
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Xu H, Zhou W, Zhan L, Bi T, Lu X. Liver mitochondria-associated endoplasmic reticulum membrane proteomics for studying the effects of ZiBuPiYin recipe on Zucker diabetic fatty rats after chronic psychological stress. Front Cell Dev Biol 2022; 10:995732. [PMID: 36407109 PMCID: PMC9669571 DOI: 10.3389/fcell.2022.995732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a complex metabolic disease with multiple etiologies, involving both genetic and environmental factors. With changes associated with modern life, increasing attention has been paid to chronic psychological stressors such as work stress. Chronic psychological stress can induce or aggravate diabetes mellitus, and conversely, with the deterioration of T2DM, patients often experience different degrees of depression, anxiety, and other negative emotions. In order to clarify the role of ZiBuPiYin recipe (ZBPYR) in regulating the liver mitochondria-associated endoplasmic reticulum membrane proteome to improve T2DM with chronic psychological stress, differentially expressed proteins (DEPs) were identified among Zucker lean littermates (control group), chronic psychological stress T2DM rats (model group), and ZBPYR administration rats (ZBPYR group) through iTRAQ with LC-MS/MS. Using Mfuzz soft clustering analysis, DEPs were divided into six different clusters. Clusters 1–6 contained 5, 68, 44, 57, 28, and 32 DEPs, respectively. Given that ZBPYR can alleviate T2DM symptoms and affect exploratory behavior during T2DM with chronic psychological stress, we focused on the clusters with opposite expression trends between model:control and ZBPYR:model groups. We screened out the DEPs in clusters 1, 3, and 4, which may be good candidates for the prevention and treatment of T2DM with chronic psychological stress, and further conducted bioinformatics analyses. DEPs were mainly involved in the insulin signaling pathway, oxidative phosphorylation, tricarboxylic acid cycle, amino acid metabolism, lysosome-related processes, and lipid metabolism. This may indicate the pathogenic basis of T2DM with chronic psychological stress and the potential therapeutic mechanism of ZBPYR. In addition, two key proteins, lysosome-associated protein (Lamp2) and tricarboxylic acid cycle-related protein (Suclg1), may represent novel biomarkers for T2DM with chronic psychological stress and drug targets of ZBPYR. Western blot analyses also showed similar expression patterns of these two proteins in liver MAMs of the model and ZBPYR groups.
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Affiliation(s)
- Huiying Xu
- Modern Research Laboratory of Spleen Visceral Manifestations Theory, School of Traditional Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Wen Zhou
- Modern Research Laboratory of Spleen Visceral Manifestations Theory, School of Traditional Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Libin Zhan
- Center for Innovative Engineering Technology in Traditional Chinese Medicine, Liaoning University of Traditional Chinese Medicine, Shenyang, China
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, China
- *Correspondence: Libin Zhan, ; Xiaoguang Lu,
| | - Tingting Bi
- Modern Research Laboratory of Spleen Visceral Manifestations Theory, School of Traditional Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaoguang Lu
- Department of Emergency Medicine, Zhongshan Hospital, Dalian University, Dalian, China
- *Correspondence: Libin Zhan, ; Xiaoguang Lu,
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10
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Petrusca DN, Lee KP, Galson DL. Role of Sphingolipids in Multiple Myeloma Progression, Drug Resistance, and Their Potential as Therapeutic Targets. Front Oncol 2022; 12:925807. [PMID: 35756630 PMCID: PMC9213658 DOI: 10.3389/fonc.2022.925807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
Multiple myeloma (MM) is an incapacitating hematological malignancy characterized by accumulation of cancerous plasma cells in the bone marrow (BM) and production of an abnormal monoclonal protein (M-protein). The BM microenvironment has a key role in myeloma development by facilitating the growth of the aberrant plasma cells, which eventually interfere with the homeostasis of the bone cells, exacerbating osteolysis and inhibiting osteoblast differentiation. Recent recognition that metabolic reprograming has a major role in tumor growth and adaptation to specific changes in the microenvironmental niche have led to consideration of the role of sphingolipids and the enzymes that control their biosynthesis and degradation as critical mediators of cancer since these bioactive lipids have been directly linked to the control of cell growth, proliferation, and apoptosis, among other cellular functions. In this review, we present the recent progress of the research investigating the biological implications of sphingolipid metabolism alterations in the regulation of myeloma development and its progression from the pre-malignant stage and discuss the roles of sphingolipids in in MM migration and adhesion, survival and proliferation, as well as angiogenesis and invasion. We introduce the current knowledge regarding the role of sphingolipids as mediators of the immune response and drug-resistance in MM and tackle the new developments suggesting the manipulation of the sphingolipid network as a novel therapeutic direction for MM.
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Affiliation(s)
- Daniela N Petrusca
- Department of Medicine, Division of Hematology/Oncology, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Kelvin P Lee
- Department of Medicine, Division of Hematology/Oncology, Indiana University School of Medicine, Indianapolis, IN, United States.,Indiana University Melvin and Bren Simon Comprehensive Cancer Center, Indianapolis, IN, United States
| | - Deborah L Galson
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh Medical Center (UPMC) Hillman Cancer Center, McGowan Institute for Regenerative Medicine, HCC Research Pavilion, University of Pittsburgh, Pittsburgh, PA, United States
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11
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Duarte C, Yamada C, Garcia C, Akkaoui J, Ho A, Nichols F, Movila A. Crosstalk between dihydroceramides produced by
Porphyromonas gingivalis
and host lysosomal cathepsin B in the promotion of osteoclastogenesis. J Cell Mol Med 2022; 26:2841-2851. [PMID: 35429112 PMCID: PMC9097840 DOI: 10.1111/jcmm.17299] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/15/2022] [Accepted: 03/21/2022] [Indexed: 11/28/2022] Open
Affiliation(s)
- Carolina Duarte
- Department of Oral Sciences and Translational Research College of Dental Medicine Nova Southeastern University Davie Florida USA
| | - Chiaki Yamada
- Department of Oral Sciences and Translational Research College of Dental Medicine Nova Southeastern University Davie Florida USA
- Department of Biomedical Sciences and Comprehensive Care Indiana University School of Dentistry Indianapolis Indiana USA
| | - Christopher Garcia
- Department of Oral Sciences and Translational Research College of Dental Medicine Nova Southeastern University Davie Florida USA
| | - Juliet Akkaoui
- Department of Oral Sciences and Translational Research College of Dental Medicine Nova Southeastern University Davie Florida USA
| | - Anny Ho
- Department of Oral Sciences and Translational Research College of Dental Medicine Nova Southeastern University Davie Florida USA
| | - Frank Nichols
- Department of Oral Health and Diagnostic Sciences University of Connecticut School of Dental Medicine Farmington Connecticut USA
| | - Alexandru Movila
- Department of Oral Sciences and Translational Research College of Dental Medicine Nova Southeastern University Davie Florida USA
- Department of Biomedical Sciences and Comprehensive Care Indiana University School of Dentistry Indianapolis Indiana USA
- Indiana Center for Musculoskeletal Health Indiana University School of Medicine Indianapolis Indiana USA
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12
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Mallela SK, Merscher S, Fornoni A. Implications of Sphingolipid Metabolites in Kidney Diseases. Int J Mol Sci 2022; 23:ijms23084244. [PMID: 35457062 PMCID: PMC9025012 DOI: 10.3390/ijms23084244] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/08/2022] [Accepted: 04/10/2022] [Indexed: 12/18/2022] Open
Abstract
Sphingolipids, which act as a bioactive signaling molecules, are involved in several cellular processes such as cell survival, proliferation, migration and apoptosis. An imbalance in the levels of sphingolipids can be lethal to cells. Abnormalities in the levels of sphingolipids are associated with several human diseases including kidney diseases. Several studies demonstrate that sphingolipids play an important role in maintaining proper renal function. Sphingolipids can alter the glomerular filtration barrier by affecting the functioning of podocytes, which are key cellular components of the glomerular filtration barrier. This review summarizes the studies in our understanding of the regulation of sphingolipid signaling in kidney diseases, especially in glomerular and tubulointerstitial diseases, and the potential to target sphingolipid pathways in developing therapeutics for the treatment of renal diseases.
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Affiliation(s)
- Shamroop kumar Mallela
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136, USA;
- Peggy and Harold Katz Family Drug Discovery Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Sandra Merscher
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136, USA;
- Peggy and Harold Katz Family Drug Discovery Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
- Correspondence: (S.M.); (A.F.); Tel.: +1-305-243-6567 (S.M.); +1-305-243-3583 (A.F.); Fax: +1-305-243-3209 (S.M.); +1-305-243-3506 (A.F.)
| | - Alessia Fornoni
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136, USA;
- Peggy and Harold Katz Family Drug Discovery Center, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
- Correspondence: (S.M.); (A.F.); Tel.: +1-305-243-6567 (S.M.); +1-305-243-3583 (A.F.); Fax: +1-305-243-3209 (S.M.); +1-305-243-3506 (A.F.)
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13
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Shu H, Peng Y, Hang W, Li N, Zhou N, Wang DW. Emerging Roles of Ceramide in Cardiovascular Diseases. Aging Dis 2022; 13:232-245. [PMID: 35111371 PMCID: PMC8782558 DOI: 10.14336/ad.2021.0710] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/10/2021] [Indexed: 12/15/2022] Open
Abstract
Ceramide is a core molecule of sphingolipid metabolism that causes selective insulin resistance and dyslipidemia. Research on its involvement in cardiovascular diseases has grown rapidly. In resting cells, ceramide levels are extremely low, while they rapidly accumulate upon encountering external stimuli. Recently, the regulation of ceramide levels under pathological conditions, including myocardial infarction, hypertension, and atherosclerosis, has drawn great attention. Increased ceramide levels are strongly associated with adverse cardiovascular risks and events while inhibiting the synthesis of ceramide or accelerating its degradation improves a variety of cardiovascular diseases. In this article, we summarize the role of ceramide in cardiovascular disease, investigate the possible application of ceramide as a new diagnostic biomarker and a therapeutic target for cardiovascular disorders, and highlight the remaining problems.
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Affiliation(s)
- Hongyang Shu
- 1Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China.,2Hubei Key Laboratory of Genetics and Molecular Mechanism of Cardiologic Disorders, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Yizhong Peng
- 3Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Weijian Hang
- 1Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China.,2Hubei Key Laboratory of Genetics and Molecular Mechanism of Cardiologic Disorders, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Na Li
- 1Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China.,2Hubei Key Laboratory of Genetics and Molecular Mechanism of Cardiologic Disorders, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Ning Zhou
- 1Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China.,2Hubei Key Laboratory of Genetics and Molecular Mechanism of Cardiologic Disorders, Huazhong University of Science and Technology, Wuhan 430000, China
| | - Dao Wen Wang
- 1Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430000, China.,2Hubei Key Laboratory of Genetics and Molecular Mechanism of Cardiologic Disorders, Huazhong University of Science and Technology, Wuhan 430000, China
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14
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Healey RD, Saied EM, Cong X, Karsai G, Gabellier L, Saint-Paul J, Del Nero E, Jeannot S, Drapeau M, Fontanel S, Maurel D, Basu S, Leyrat C, Golebiowski J, Bossis G, Bechara C, Hornemann T, Arenz C, Granier S. Discovery and Mechanism of Action of Small Molecule Inhibitors of Ceramidases. Angew Chem Int Ed Engl 2022; 61:e202109967. [PMID: 34668624 DOI: 10.1002/anie.202109967] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/21/2021] [Indexed: 01/09/2023]
Abstract
Sphingolipid metabolism is tightly controlled by enzymes to regulate essential processes in human physiology. The central metabolite is ceramide, a pro-apoptotic lipid catabolized by ceramidase enzymes to produce pro-proliferative sphingosine-1-phosphate. Alkaline ceramidases are transmembrane enzymes that recently attracted attention for drug development in fatty liver diseases. However, due to their hydrophobic nature, no specific small molecule inhibitors have been reported. We present the discovery and mechanism of action of the first drug-like inhibitors of alkaline ceramidase 3 (ACER3). In particular, we chemically engineered novel fluorescent ceramide substrates enabling screening of large compound libraries and characterized enzyme:inhibitor interactions using mass spectrometry and MD simulations. In addition to revealing a new paradigm for inhibition of lipid metabolising enzymes with non-lipidic small molecules, our data lay the ground for targeting ACER3 in drug discovery efforts.
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Affiliation(s)
- Robert D Healey
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
| | - Essa M Saied
- Institute for chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
- Chemistry Department, Faculty of Science, Suez Canal University, 41522, Ismailia, Egypt
| | - Xiaojing Cong
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
| | - Gergely Karsai
- Institute of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, 8091, Switzerland
| | | | - Julie Saint-Paul
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
| | - Elise Del Nero
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
| | - Sylvain Jeannot
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
| | - Marion Drapeau
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
| | - Simon Fontanel
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
| | - Damien Maurel
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
| | - Shibom Basu
- EMBL Grenoble, 71 Avenue des Martyrs, CS 90181, 38042, Grenoble, France
| | - Cedric Leyrat
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
| | - Jérôme Golebiowski
- Université Côte d'Azur, CNRS, Institut de Chimie de Nice UMR7272, Nice, 06108, France
- Department of Brain and Cognitive Sciences, Daegu Gyeongbuk Institute of Science and Technology, Daegu, 711-873, South Korea
| | | | - Cherine Bechara
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
- Institut Universitaire de France (IUF), Paris, France
| | - Thorsten Hornemann
- Institute of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, 8091, Switzerland
| | - Christoph Arenz
- Institute for chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Sebastien Granier
- IGF, University of Montpellier, CNRS, INSERM, Montpellier, 34094, France
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15
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Healey RD, Saied EM, Cong X, Karsai G, Gabellier L, Saint‐Paul J, Del Nero E, Jeannot S, Drapeau M, Fontanel S, Maurel D, Basu S, Leyrat C, Golebiowski J, Bossis G, Bechara C, Hornemann T, Arenz C, Granier S. Discovery and Mechanism of Action of Small Molecule Inhibitors of Ceramidases**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109967] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Robert D. Healey
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
| | - Essa M. Saied
- Institute for chemistry Humboldt-Universität zu Berlin Brook-Taylor-Str. 2 12489 Berlin Germany
- Chemistry Department Faculty of Science Suez Canal University 41522 Ismailia Egypt
| | - Xiaojing Cong
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
| | - Gergely Karsai
- Institute of Clinical Chemistry University Hospital Zurich University of Zurich Zurich 8091 Switzerland
| | | | - Julie Saint‐Paul
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
| | - Elise Del Nero
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
| | - Sylvain Jeannot
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
| | - Marion Drapeau
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
| | - Simon Fontanel
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
| | - Damien Maurel
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
| | - Shibom Basu
- EMBL Grenoble 71 Avenue des Martyrs, CS 90181 38042 Grenoble France
| | - Cedric Leyrat
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
| | - Jérôme Golebiowski
- Université Côte d'Azur CNRS Institut de Chimie de Nice UMR7272 Nice 06108 France
- Department of Brain and Cognitive Sciences Daegu Gyeongbuk Institute of Science and Technology Daegu 711-873 South Korea
| | | | - Cherine Bechara
- IGF University of Montpellier CNRS INSERM Montpellier 34094 France
- Institut Universitaire de France (IUF) Paris France
| | - Thorsten Hornemann
- Institute of Clinical Chemistry University Hospital Zurich University of Zurich Zurich 8091 Switzerland
| | - Christoph Arenz
- Institute for chemistry Humboldt-Universität zu Berlin Brook-Taylor-Str. 2 12489 Berlin Germany
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16
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Quinville BM, Deschenes NM, Ryckman AE, Walia JS. A Comprehensive Review: Sphingolipid Metabolism and Implications of Disruption in Sphingolipid Homeostasis. Int J Mol Sci 2021; 22:ijms22115793. [PMID: 34071409 PMCID: PMC8198874 DOI: 10.3390/ijms22115793] [Citation(s) in RCA: 104] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/23/2021] [Accepted: 05/24/2021] [Indexed: 12/16/2022] Open
Abstract
Sphingolipids are a specialized group of lipids essential to the composition of the plasma membrane of many cell types; however, they are primarily localized within the nervous system. The amphipathic properties of sphingolipids enable their participation in a variety of intricate metabolic pathways. Sphingoid bases are the building blocks for all sphingolipid derivatives, comprising a complex class of lipids. The biosynthesis and catabolism of these lipids play an integral role in small- and large-scale body functions, including participation in membrane domains and signalling; cell proliferation, death, migration, and invasiveness; inflammation; and central nervous system development. Recently, sphingolipids have become the focus of several fields of research in the medical and biological sciences, as these bioactive lipids have been identified as potent signalling and messenger molecules. Sphingolipids are now being exploited as therapeutic targets for several pathologies. Here we present a comprehensive review of the structure and metabolism of sphingolipids and their many functional roles within the cell. In addition, we highlight the role of sphingolipids in several pathologies, including inflammatory disease, cystic fibrosis, cancer, Alzheimer’s and Parkinson’s disease, and lysosomal storage disorders.
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17
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Green CD, Weigel C, Oyeniran C, James BN, Davis D, Mahawar U, Newton J, Wattenberg BW, Maceyka M, Spiegel S. CRISPR/Cas9 deletion of ORMDLs reveals complexity in sphingolipid metabolism. J Lipid Res 2021; 62:100082. [PMID: 33939982 PMCID: PMC8167824 DOI: 10.1016/j.jlr.2021.100082] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 04/16/2021] [Indexed: 12/26/2022] Open
Abstract
The serine palmitoyltransferase (SPT) complex catalyzes the rate-limiting step in the de novo biosynthesis of ceramides, the precursors of sphingolipids. The mammalian ORMDL isoforms (ORMDL1-3) are negative regulators of SPT. However, the roles of individual ORMDL isoforms are unclear. Using siRNA against individual ORMDLs, only single siORMDL3 had modest effects on dihydroceramide and ceramide levels, whereas downregulation of all three ORMDLs induced more pronounced increases. With the CRISPR/Cas9-based genome-editing strategy, we established stable single ORMDL3 KO (ORMDL3-KO) and ORMDL1/2/3 triple-KO (ORMDL-TKO) cell lines to further understand the roles of ORMDL proteins in sphingolipid biosynthesis. While ORMDL3-KO modestly increased dihydroceramide and ceramide levels, ORMDL-TKO cells had dramatic increases in the accumulation of these sphingolipid precursors. SPT activity was increased only in ORMDL-TKO cells. In addition, ORMDL-TKO but not ORMDL3-KO dramatically increased levels of galactosylceramides, glucosylceramides, and lactosylceramides, the elevated N-acyl chain distributions of which broadly correlated with the increases in ceramide species. Surprisingly, although C16:0 is the major sphingomyelin species, it was only increased in ORMDL3-KO, whereas all other N-acyl chain sphingomyelin species were significantly increased in ORMDL-TKO cells. Analysis of sphingoid bases revealed that although sphingosine was only increased 2-fold in ORMDL-TKO cells, levels of dihydrosphingosine, dihydrosphingosine-1-phosphate, and sphingosine-1-phosphate were hugely increased in ORMDL-TKO cells and not in ORMDL3-KO cells. Thus, ORMDL proteins may have a complex, multifaceted role in the biosynthesis and regulation of cellular sphingolipids.
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Affiliation(s)
- Christopher D Green
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA
| | - Cynthia Weigel
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA
| | - Clement Oyeniran
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA
| | - Briana N James
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA
| | - Deanna Davis
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA
| | - Usha Mahawar
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA
| | - Jason Newton
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA
| | - Binks W Wattenberg
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA
| | - Michael Maceyka
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA
| | - Sarah Spiegel
- Department of Biochemistry and Molecular Biology, VCU School of Medicine, Richmond, VA, USA.
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18
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Kitamura H, Hashimoto M. USP2-Related Cellular Signaling and Consequent Pathophysiological Outcomes. Int J Mol Sci 2021; 22:1209. [PMID: 33530560 PMCID: PMC7865608 DOI: 10.3390/ijms22031209] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 12/13/2022] Open
Abstract
Ubiquitin specific protease (USP) 2 is a multifunctional deubiquitinating enzyme. USP2 modulates cell cycle progression, and therefore carcinogenesis, via the deubiquitination of cyclins and Aurora-A. Other tumorigenic molecules, including epidermal growth factor and fatty acid synthase, are also targets for USP2. USP2 additionally prevents p53 signaling. On the other hand, USP2 functions as a key component of the CLOCK/BMAL1 complex and participates in rhythmic gene expression in the suprachiasmatic nucleus and liver. USP2 variants influence energy metabolism by controlling hepatic gluconeogenesis, hepatic cholesterol uptake, adipose tissue inflammation, and subsequent systemic insulin sensitivity. USP2 also has the potential to promote surface expression of ion channels in renal and intestinal epithelial cells. In addition to modifying the production of cytokines in immune cells, USP2 also modulates the signaling molecules that are involved in cytokine signaling in the target cells. Usp2 knockout mice exhibit changes in locomotion and male fertility, which suggest roles for USP2 in the central nervous system and male genital tract, respectively. In this review, we summarize the cellular events with USP2 contributions and list the signaling molecules that are upstream or downstream of USP2. Additionally, we describe phenotypic differences found in the in vitro and in vivo experimental models.
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Affiliation(s)
- Hiroshi Kitamura
- Laboratory of Veterinary Physiology, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan;
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19
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Alkaline ceramidase family: The first two decades. Cell Signal 2020; 78:109860. [PMID: 33271224 DOI: 10.1016/j.cellsig.2020.109860] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/22/2020] [Accepted: 11/24/2020] [Indexed: 11/21/2022]
Abstract
Ceramidases are a group of enzymes that catalyze the hydrolysis of ceramide, dihydroceramide, and phytoceramide into sphingosine (SPH), dihydrosphingosine (DHS), and phytosphingosine (PHS), respectively, along with a free fatty acid. Ceramidases are classified into the acid, neutral, and alkaline ceramidase subtypes according to the pH optima for their catalytic activity. YPC1 and YDC1 were the first alkaline ceramidase genes to be identified and cloned from the yeast Saccharomyces cerevisiae two decades ago. Subsequently, alkaline ceramidase genes were identified from other species, including one Drosophila melanogaster ACER gene (Dacer), one Arabidopsis thaliana ACER gene (AtACER), three Mus musculus ACER genes (Acer1, Acer2, and Acer3), and three Homo sapiens ACER genes (ACER1, ACER2, and ACER3). The protein products of these genes constitute a large protein family, termed the alkaline ceramidase (ACER) family. All the biochemically characterized members of the ACER family are integral membrane proteins with seven transmembrane segments in the Golgi complex or endoplasmic reticulum, and they each have unique substrate specificity. An increasing number of studies suggest that the ACER family has diverse roles in regulating sphingolipid metabolism and biological processes. Here we discuss the discovery of the ACER family, the biochemical properties, structures, and catalytic mechanisms of its members, and its role in regulating sphingolipid metabolism and biological processes in yeast, insects, plants, and mammals.
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