1
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Baumgartner T, Zurauskaite G, Steuer C, Bernasconi L, Huber A, Mueller B, Schuetz P. Association of serum sphingomyelin profile with clinical outcomes in patients with lower respiratory tract infections: results of an observational, prospective 6-year follow-up study. Clin Chem Lab Med 2019; 57:679-689. [PMID: 30267624 DOI: 10.1515/cclm-2018-0509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 08/21/2018] [Indexed: 01/11/2023]
Abstract
Background Sphingolipids - the structural cell membrane components - and their metabolites are involved in signal transduction and participate in the regulation of immunity. We investigated the prognostic implications of sphingolipid metabolic profiling on mortality in a large cohort of patients with lower respiratory tract infections (LRTIs). Methods We measured 15 different sphingomyelin (SM) types in patients with LRTIs from a previous Swiss multicenter trial that examined the impact of procalcitonin-guided antibiotic therapy on total antibiotic use and rates and duration of hospitalization. Primary and secondary end points were adverse outcomes - defined as death or intensive care unit admission within 30 days - and 6-year mortality. Results Of 360 patients, 8.9% experienced an adverse outcome within 30 days and 46% died within 6 years. Levels of all SM types were significantly lower in pneumonia patients vs. those with chronic obstructive pulmonary disease (COPD) exacerbation (p<0.0001 for all comparisons). Sphingomyelin subspecies SM (OH) C22:1 and SM (OH) C22:2 were associated with lower risk for short-term adverse outcomes (sex-, gender- and comorbidity-adjusted odds ratios [OR]: 0.036; 95% confidence interval [CI], 0.002-0.600; p=0.021 and 0.037; 95% CI, 0.001-0.848; p=0.039, respectively). We found no significant associations with 6-year mortality for any SM. Conclusions Circulating sphingolipid levels are lower in inflammatory conditions such as pneumonia and correlate with adverse short-term outcomes. Further characterization of the physiological, pathophysiological and metabolic roles of sphingolipids under inflammatory conditions may facilitate understanding of their roles in infectious disease.
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Affiliation(s)
- Thomas Baumgartner
- Division of Endocrinology, Diabetology and Metabolism, Medical University Department, Kantonsspital Aarau, Aarau, Switzerland, Phone: 0041 62 838 68 32, Fax: 0041 62 838 98 73.,University Department of Internal Medicine, Kantonsspital Aarau, Tellstr., 5001 Aarau, Switzerland
| | - Giedre Zurauskaite
- Division of Endocrinology, Diabetology and Metabolism, Medical University Department, Kantonsspital Aarau, Aarau, Switzerland
| | - Christian Steuer
- Department of Laboratory Medicine, Kantonsspital Aarau, Aarau, Switzerland
| | - Luca Bernasconi
- Department of Laboratory Medicine, Kantonsspital Aarau, Aarau, Switzerland
| | - Andreas Huber
- Department of Laboratory Medicine, Kantonsspital Aarau, Aarau, Switzerland
| | - Beat Mueller
- Division of Endocrinology, Diabetology and Metabolism, Medical University Department, Kantonsspital Aarau, Aarau, Switzerland
| | - Philipp Schuetz
- Division of Endocrinology, Diabetology and Metabolism, Medical University Department, Kantonsspital Aarau, Aarau, Switzerland
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2
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Knapp P, Chomicz K, Świderska M, Chabowski A, Jach R. Unique Roles of Sphingolipids in Selected Malignant and Nonmalignant Lesions of Female Reproductive System. BIOMED RESEARCH INTERNATIONAL 2019; 2019:4376583. [PMID: 31187044 PMCID: PMC6521305 DOI: 10.1155/2019/4376583] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/28/2019] [Accepted: 04/17/2019] [Indexed: 12/22/2022]
Abstract
Cancer develops as a result of the loss of self-control mechanisms by a cell; it gains the ability to induce angiogenesis, becomes immortal and resistant to cell death, stops responding to growth suppressor signals, and becomes capable of invasion and metastasis. Sphingolipids-a family of membrane lipids-are known to play important roles in the regulation of cell proliferation, the response to chemotherapeutic agents, and/or prevention of cancer. Despite the underlying functions of sphingolipids in cancer biology, their metabolism in different malignant tumors is poorly investigated. Some studies showed marked differences in ceramide content between the tumor and the respective healthy tissue. Interestingly, the level of this sphingolipid could be either low or elevated, suggesting that the alterations in ceramide metabolism in cancer tissue may depend on the biology of the tumor. These processes are indeed related to the type of cancer, its stage, and histology status. In this paper we present the unique roles of bioactive sphingolipid derivative in selected gynecologic malignant and nonmalignant lesions.
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Affiliation(s)
- Paweł Knapp
- Department of Gynecology and Gynecologic Oncology, Medical University of Bialystok, Poland
| | - Karolina Chomicz
- Ist Medical Faculty with Stomatology, Medical University of Lublin, Poland
| | | | - Adrian Chabowski
- Department of Physiology, Medical University of Bialystok, Poland
| | - Robert Jach
- Jagiellonian University Medical College Gynecology and Obstetrics, Krakow, Poland
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3
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Huang X, Ahn DU. How Can the Value and Use of Egg Yolk Be Increased? J Food Sci 2019; 84:205-212. [PMID: 30620779 DOI: 10.1111/1750-3841.14430] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 11/16/2018] [Accepted: 11/24/2018] [Indexed: 12/12/2022]
Abstract
The major driving force for the egg consumption in the United States over the past few decades was processed egg. However, the consumption of egg through the processed egg reached the plateau in recent years because of the imbalance in the demands between the egg white and yolk products. The consumer demands for egg white products are very high while those for the egg yolk, the co-product of dried egg white, are low because of the negative perceptions on egg yolk. Two key approaches that can be used to increase the value and use of egg yolk are: (1) developing new commodity products by fractionating egg yolk and apply them in various food processing, and (2) separating functional proteins and lipids from yolk and use them as is or further develop functional peptides and functional lipids and use them as pharmaceutical, nutraceutical, and cosmeceutical agents. These approaches can diversify the use of egg yolk, which eventually will help increase the consumption of egg. This review (1) discusses the current use of egg yolk products and the development of new functional commodity products from egg yolk, (2) review the important functional components in egg yolk and overview the current separation methods and their applications, (3) discuss the production of functional peptides and lipids using the separated egg proteins and lipids, and (4) suggest the future directions for the best use of egg yolk components. Development of scale-up production methods, which is vital for the practical applications, is discussed when appropriate.
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Affiliation(s)
- X Huang
- College of Food Science & Technology, Egg Processing Technology Local Joint Natl. Engineering Research Center, Natl. R&D Center for Egg Processing, Huazhong Agricultural Univ., Wuhan, Hubei, 430070, China
| | - Dong U Ahn
- Animal Science Dept., Iowa State Univ., Ames, IA, 50011, U.S.A
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4
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D. S, Ravindar C, Swamy MJ. Structure, supramolecular organization and thermotropic phase behavior of N-acyl tris homologs (n = 9–18): Structural analogs of apoptosis inducing ceramides. Chem Phys Lipids 2018; 217:1-11. [DOI: 10.1016/j.chemphyslip.2018.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 09/16/2018] [Accepted: 10/14/2018] [Indexed: 02/06/2023]
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5
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Noya MS, Andrade-Campos M, Irun P, López de Frutos L, López-Fernandez MF, Giraldo P. Gaucher disease and chronic myeloid leukemia: first reported patient receiving enzyme replacement and tyrosine kinase inhibitor therapies simultaneously. Clin Case Rep 2018; 6:887-892. [PMID: 29744080 PMCID: PMC5930224 DOI: 10.1002/ccr3.1460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 01/14/2018] [Accepted: 02/02/2018] [Indexed: 01/07/2023] Open
Abstract
Report a female diagnosed as type 1 Gaucher disease after a femoral pathologic fracture when she was 55 years old. Enzyme replacement therapy was started, and she achieved therapeutic goals. In 2015, a Ph’ CML with numerous pseudo‐Gaucher cells in bone marrow appears. BCR/ABL was not present at GD diagnosis.
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Affiliation(s)
| | - Marcio Andrade-Campos
- Translational Research Unit Miguel Servet University Hospital IIS-Aragon Zaragoza Spain.,CIBER de Enfermedades Raras CIBERER Carlos III Research Institute Zaragoza Spain
| | - Pilar Irun
- Translational Research Unit Miguel Servet University Hospital IIS-Aragon Zaragoza Spain.,CIBER de Enfermedades Raras CIBERER Carlos III Research Institute Zaragoza Spain
| | - Laura López de Frutos
- Translational Research Unit Miguel Servet University Hospital IIS-Aragon Zaragoza Spain
| | | | - Pilar Giraldo
- Translational Research Unit Miguel Servet University Hospital IIS-Aragon Zaragoza Spain.,CIBER de Enfermedades Raras CIBERER Carlos III Research Institute Zaragoza Spain.,Fundacion Española para el Estudio y Terapeútica de la Enfermedad de Gaucher (FEETEG) Zaragoza Spain
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6
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Vilaça R, Barros I, Matmati N, Silva E, Martins T, Teixeira V, Hannun YA, Costa V. The ceramide activated protein phosphatase Sit4 impairs sphingolipid dynamics, mitochondrial function and lifespan in a yeast model of Niemann-Pick type C1. Biochim Biophys Acta Mol Basis Dis 2017; 1864:79-88. [PMID: 28988886 DOI: 10.1016/j.bbadis.2017.10.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 09/29/2017] [Accepted: 10/05/2017] [Indexed: 12/20/2022]
Abstract
The Niemann-Pick type C is a rare neurodegenerative disease that results from loss-of-function point mutations in NPC1 or NPC2, which affect the homeostasis of sphingolipids and sterols in human cells. We have previously shown that yeast lacking Ncr1, the orthologue of human NPC1 protein, display a premature ageing phenotype and higher sensitivity to oxidative stress associated with mitochondrial dysfunctions and accumulation of long chain bases. In this study, a lipidomic analysis revealed specific changes in the levels of ceramide species in ncr1Δ cells, including decreases in dihydroceramides and increases in phytoceramides. Moreover, the activation of Sit4, a ceramide-activated protein phosphatase, increased in ncr1Δ cells. Deletion of SIT4 or CDC55, its regulatory subunit, increased the chronological lifespan and hydrogen peroxide resistance of ncr1Δ cells and suppressed its mitochondrial defects. Notably, Sch9 and Pkh1-mediated phosphorylation of Sch9 decreased significantly in ncr1Δsit4Δ cells. These results suggest that phytoceramide accumulation and Sit4-dependent signaling mediate the mitochondrial dysfunction and shortened lifespan in the yeast model of Niemann-Pick type C1, in part through modulation of the Pkh1-Sch9 pathway.
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Affiliation(s)
- Rita Vilaça
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal; Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Ivo Barros
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal; Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Nabil Matmati
- Stony Brook Cancer Center, Stony Brook University, Health Science Center, Stony Brook, NY, USA
| | - Elísio Silva
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal; Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Telma Martins
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Vítor Teixeira
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal; Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Yusuf A Hannun
- Stony Brook Cancer Center, Stony Brook University, Health Science Center, Stony Brook, NY, USA
| | - Vítor Costa
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal; Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal; Departamento de Biologia Molecular, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.
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7
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Kori M, Gov E, Arga KY. Molecular signatures of ovarian diseases: Insights from network medicine perspective. Syst Biol Reprod Med 2016; 62:266-82. [PMID: 27341345 DOI: 10.1080/19396368.2016.1197982] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Dysfunctions and disorders in the ovary lead to a host of diseases including ovarian cancer, ovarian endometriosis, and polycystic ovarian syndrome (PCOS). Understanding the molecular mechanisms behind ovarian diseases is a great challenge. In the present study, we performed a meta-analysis of transcriptome data for ovarian cancer, ovarian endometriosis, and PCOS, and integrated the information gained from statistical analysis with genome-scale biological networks (protein-protein interaction, transcriptional regulatory, and metabolic). Comparative and integrative analyses yielded reporter biomolecules (genes, proteins, metabolites, transcription factors, and micro-RNAs), and unique or common signatures at protein, metabolism, and transcription regulation levels, which might be beneficial to uncovering the underlying biological mechanisms behind the diseases. These signatures were mostly associated with formation or initiation of cancer development, and pointed out the potential tendency of PCOS and endometriosis to tumorigenesis. Molecules and pathways related to MAPK signaling, cell cycle, and apoptosis were the mutual determinants in the pathogenesis of all three diseases. To our knowledge, this is the first report that screens these diseases from a network medicine perspective. This study provides signatures which could be considered as potential therapeutic targets and/or as medical prognostic biomarkers in further experimental and clinical studies. Abbreviations DAVID: Database for Annotation, Visualization and Integrated Discovery; DEGs: differentially expressed genes; GEO: Gene Expression Omnibus; KEGG: Kyoto Encyclopedia of Genes and Genomes; LIMMA: Linear Models for Microarray Data; MBRole: Metabolite Biological Role; miRNA: micro-RNA; PCOS: polycystic ovarian syndrome; PPI: protein-protein interaction; RMA: Robust Multi-Array Average; TF: transcription factor.
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Affiliation(s)
- Medi Kori
- a Department of Bioengineering , Marmara University , Istanbul , Turkey
| | - Esra Gov
- a Department of Bioengineering , Marmara University , Istanbul , Turkey
| | - Kazim Yalcin Arga
- a Department of Bioengineering , Marmara University , Istanbul , Turkey
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8
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Ilan Y. Compounds of the sphingomyelin-ceramide-glycosphingolipid pathways as secondary messenger molecules: new targets for novel therapies for fatty liver disease and insulin resistance. Am J Physiol Gastrointest Liver Physiol 2016; 310:G1102-17. [PMID: 27173510 DOI: 10.1152/ajpgi.00095.2016] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 05/04/2016] [Indexed: 01/31/2023]
Abstract
The compounds of sphingomyelin-ceramide-glycosphingolipid pathways have been studied as potential secondary messenger molecules in various systems, along with liver function and insulin resistance. Secondary messenger molecules act directly or indirectly to affect cell organelles and intercellular interactions. Their potential role in the pathogenesis of steatohepatitis and diabetes has been suggested. Data samples collected from patients with Gaucher's disease, who had high levels of glucocerebroside, support a role for compounds from these pathways as a messenger molecules in the pathogenesis of fatty liver disease and diabetes. The present review summarizes some of the recent data on the role of glycosphingolipid molecules as messenger molecules in various physiological and pathological conditions, more specifically including insulin resistance and fatty liver disease.
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Affiliation(s)
- Yaron Ilan
- Gastroenterology and Liver Units, Department of Medicine, Hadassah Hebrew University Medical Center, Jerusalem, Israel
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9
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Alcaide A, Llebaria A. Aziridine Ring Opening for the Synthesis of Sphingolipid Analogues: Inhibitors of Sphingolipid-Metabolizing Enzymes. J Org Chem 2014; 79:2993-3029. [DOI: 10.1021/jo500061w] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Anna Alcaide
- Medicinal Chemistry Laboratory (MedChemLab), Departament
de Química Biomèdica, Institut de Química Avançada de Catalunya (IQAC−CSIC), Jordi Girona 18-26, Barcelona 08034, Spain
| | - Amadeu Llebaria
- Medicinal Chemistry Laboratory (MedChemLab), Departament
de Química Biomèdica, Institut de Química Avançada de Catalunya (IQAC−CSIC), Jordi Girona 18-26, Barcelona 08034, Spain
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10
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A novel Sit4 phosphatase complex is involved in the response to ceramide stress in yeast. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:129645. [PMID: 24082981 PMCID: PMC3777123 DOI: 10.1155/2013/129645] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/28/2013] [Accepted: 07/25/2013] [Indexed: 12/17/2022]
Abstract
Ceramide is a building block for complex sphingolipids in the plasma membrane, but it also plays a significant role in secondary signalling pathways regulating cell proliferation and apoptosis in response to stress. Ceramide activated protein phosphatase activity has been previously observed in association with the Sit4 protein phosphatase. Here we find that sit4Δ mutants have decreased ceramide levels and display resistance to exogenous ceramides and phytosphingosine. Mutants lacking SIT4 or KTI12 display a shift towards nonhydroxylated forms of long chain bases and sphingolipids, suggesting regulation of hydroxylase (SUR2) or ceramide synthase by Sit4p. We have identified novel subunits of the Sit4 complex and have also shown that known Sit4 regulatory subunits—SAP proteins—are not involved in the ceramide response. This is the first observation of separation of function between Sit4 and SAP proteins. We also find that the Sit4p target Elongator is not involved in the ceramide response but that cells deficient in Kti12p—an accessory protein with an undefined regulatory role—have similar ceramide phenotypes to sit4Δ mutants. Therefore, Kti12p may play a similar secondary role in the ceramide response. This evidence points to a novel Sit4-dependent regulatory mechanism in response to ceramide stress.
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11
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Abstract
P73 is a member of the p53 transcription factors family with a prominent role in neurobiology, affecting brain development as well as controlling neuronal survival. Accordingly, p73 has been identified as key player in many age-related neurodegenerative diseases, such as Alzheimer's disease, neuroAIDS and Niemann-Pick type C disease. Here we investigate possible correlations of p73 with Parkinson disease. Tyrosine hydroxylase is a crucial player in Parkinson disease being the enzyme necessary for dopamine synthesis. In this work we show that levels of tyrosine hydroxylase can be influenced by p73. We also demonstrate that p73 can protect against tyrosine hydroxylase depletion in an in vitro model of Parkinson disease.
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Affiliation(s)
- Francesca Grespi
- Medical Research Council, Toxicology Unit, Leicester University, Leicester LE1 9HN, UK
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12
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Ridley CM, Thur KE, Shanahan J, Thillaiappan NB, Shen A, Uhl K, Walden CM, Rahim AA, Waddington SN, Platt FM, van der Spoel AC. β-Glucosidase 2 (GBA2) activity and imino sugar pharmacology. J Biol Chem 2013; 288:26052-26066. [PMID: 23880767 DOI: 10.1074/jbc.m113.463562] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
β-Glucosidase 2 (GBA2) is an enzyme that cleaves the membrane lipid glucosylceramide into glucose and ceramide. The GBA2 gene is mutated in genetic neurological diseases (hereditary spastic paraplegia and cerebellar ataxia). Pharmacologically, GBA2 is reversibly inhibited by alkylated imino sugars that are in clinical use or are being developed for this purpose. We have addressed the ambiguity surrounding one of the defining characteristics of GBA2, which is its sensitivity to inhibition by conduritol B epoxide (CBE). We found that CBE inhibited GBA2, in vitro and in live cells, in a time-dependent fashion, which is typical for mechanism-based enzyme inactivators. Compared with the well characterized impact of CBE on the lysosomal glucosylceramide-degrading enzyme (glucocerebrosidase, GBA), CBE inactivated GBA2 less efficiently, due to a lower affinity for this enzyme (higher KI) and a lower rate of enzyme inactivation (k(inact)). In contrast to CBE, N-butyldeoxygalactonojirimycin exclusively inhibited GBA2. Accordingly, we propose to redefine GBA2 activity as the β-glucosidase that is sensitive to inhibition by N-butyldeoxygalactonojirimycin. Revised as such, GBA2 activity 1) was optimal at pH 5.5-6.0; 2) accounted for a much higher proportion of detergent-independent membrane-associated β-glucosidase activity; 3) was more variable among mouse tissues and neuroblastoma and monocyte cell lines; and 4) was more sensitive to inhibition by N-butyldeoxynojirimycin (miglustat, Zavesca®), in comparison with earlier studies. Our evaluation of GBA2 makes it possible to assess its activity more accurately, which will be helpful in analyzing its physiological roles and involvement in disease and in the pharmacological profiling of monosaccharide mimetics.
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Affiliation(s)
- Christina M Ridley
- From the Atlantic Research Centre, Departments of Pediatrics and Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Karen E Thur
- From the Atlantic Research Centre, Departments of Pediatrics and Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Jessica Shanahan
- From the Atlantic Research Centre, Departments of Pediatrics and Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | | | - Ann Shen
- From the Atlantic Research Centre, Departments of Pediatrics and Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Karly Uhl
- From the Atlantic Research Centre, Departments of Pediatrics and Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Charlotte M Walden
- the Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom, and
| | - Ahad A Rahim
- the Gene Transfer Technology Group, Institute of Women's Health, University College London, London WC1E 6HX, United Kingdom
| | - Simon N Waddington
- the Gene Transfer Technology Group, Institute of Women's Health, University College London, London WC1E 6HX, United Kingdom
| | - Frances M Platt
- the Department of Pharmacology, University of Oxford, Oxford OX1 3QT, United Kingdom
| | - Aarnoud C van der Spoel
- From the Atlantic Research Centre, Departments of Pediatrics and Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada,.
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13
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Aberrant lipid metabolism: an emerging diagnostic and therapeutic target in ovarian cancer. Int J Mol Sci 2013; 14:7742-56. [PMID: 23574936 PMCID: PMC3645713 DOI: 10.3390/ijms14047742] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 03/06/2013] [Accepted: 03/07/2013] [Indexed: 01/07/2023] Open
Abstract
Ovarian cancer remains the most lethal gynaecological cancer. A better understanding of the molecular pathogenesis of ovarian cancer is of critical importance to develop early detection tests and identify new therapeutic targets that would increase survival. Cancer cells depend on de novo lipid synthesis for the generation of fatty acids to meet the energy requirements for increased tumour growth. There is increasing evidence that lipid metabolism is deregulated in cancers, including ovarian cancer. The increased expression and activity of lipogenic enzymes is largely responsible for increased lipid synthesis, which is regulated by metabolic and oncogenic signalling pathways. This article reviews the latest knowledge on lipid metabolism and the alterations in the expression of lipogenic enzymes and downstream signalling pathways in ovarian cancer. Current developments for exploiting lipids as biomarkers for the detection of early stage ovarian cancer and therapeutic targets are discussed. Current research targeting lipogenic enzymes and lipids to increase the cytotoxicity of chemotherapy drugs is also highlighted.
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14
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Botvinik Livshits A, Al Quntar AAA, Yekhtin Z, Srebnik M, Dagan A. Novel 3-hydroxy vinylboronates influence sphingolipid metabolism, cause apoptosis in Jurkat cells and prevent tumor development in nude mice. Bioorg Med Chem Lett 2013; 23:507-12. [PMID: 23232057 DOI: 10.1016/j.bmcl.2012.11.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 11/01/2012] [Accepted: 11/08/2012] [Indexed: 10/27/2022]
Abstract
A series of novel 3-hydroxy vinylboronates which share structural similarities with sphingolipids were synthesized and tested in vitro and in vivo as anticancer agents. The molecules reduced cancer cell survival in vitro by influencing their sphingolipid metabolism. In a cancer model in nude mice the lead compound E7 prevented the development of tumor as long as the treatment period continued. Moreover, it delayed tumor growth after the treatment was finished.
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Affiliation(s)
- Alina Botvinik Livshits
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, 91120, Israel.
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15
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Bhabak KP, Arenz C. Novel amide- and sulfonamide-based aromatic ethanolamines: effects of various substituents on the inhibition of acid and neutral ceramidases. Bioorg Med Chem 2012; 20:6162-70. [PMID: 22989912 DOI: 10.1016/j.bmc.2012.08.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 07/19/2012] [Accepted: 08/08/2012] [Indexed: 12/30/2022]
Abstract
In the present study we describe the design and synthesis of a series of amide- and sulfonamide-based compounds as inhibitor of recombinant acid and neutral ceramidases. Inhibition of ceramidases has been shown to induce apoptosis and to increase the efficacy of conventional chemotherapy in several cancer models. B-13, lead in vitro inhibitor of acid ceramidase has been recently shown to be virtually inactive towards lysosomal acid ceramidase in living cells at lower concentrations and for a shorter time of treatment, suggesting the development of more potent inhibitors. In this study, a detailed SAR investigation has been performed to understand the effect of different substituents on the phenyl ring of amide- and sulfonamide-based compounds that partially resemble the structure of well-known inhibitors such as B-13, D-e-MAPP as well as NOE. Our results suggest that the electronic effects of the substituents on phenyl ring in B-13 and D-e-MAPP analogues have negligible effects either in enhancing the inhibition potencies or for selectivity towards aCDase over nCDase. However, the hydrophobicity and the steric effects of longer alkyl chains (n-Pr, n-Bu or t-Bu groups) at the phenyl ring were found to be important for an enhanced selectivity towards aCDase over nCDase.
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Affiliation(s)
- Krishna P Bhabak
- Humboldt Universität zu Berlin, Institute for Chemistry, Brook-Taylor-Str. 2, 12489 Berlin, Germany
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