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den Heijer JM, Cullen VC, Pereira DR, Yavuz Y, de Kam ML, Grievink HW, Moerland M, Leymarie N, Khatri K, Sollomoni I, Spitalny L, Dungeon L, Hilt DC, Justman C, Lansbury P, Groeneveld GJ. A Biomarker Study in Patients with GBA1-Parkinson's Disease and Healthy Controls. Mov Disord 2023. [PMID: 36916660 DOI: 10.1002/mds.29360] [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: 09/25/2022] [Revised: 01/05/2023] [Accepted: 02/03/2023] [Indexed: 03/16/2023] Open
Abstract
BACKGROUND Molecules related to glucocerebrosidase (GCase) are potential biomarkers for development of compounds targeting GBA1-associated Parkinson's disease (GBA-PD). OBJECTIVES Assessing variability of various glycosphingolipids (GSLs) in plasma, peripheral blood mononuclear cells (PBMCs), and cerebrospinal fluid (CSF) across GBA-PD, idiopathic PD (iPD), and healthy volunteers (HVs). METHODS Data from five studies were combined. Variability was assessed of glucosylceramide (various isoforms), lactosylceramide (various isoforms), glucosylsphingosine, galactosylsphingosine, GCase activity (using fluorescent 4-methylumbeliferryl-β-glucoside), and GCase protein (using enzyme-linked immunosorbent assay) in plasma, PBMCs, and CSF if available, in GBA-PD, iPD, and HVs. GSLs in leukocyte subtypes were compared in HVs. Principal component analysis was used to explore global patterns in GSLs, clinical characteristics (Movement Disorder Society - Unified Parkinson's Disease Rating Scale Part 3 [MDS-UPDRS-3], Mini-Mental State Examination [MMSE], GBA1 mutation type), and participant status (GBA-PD, iPD, HVs). RESULTS Within-subject between-day variability ranged from 5.8% to 44.5% and was generally lower in plasma than in PBMCs. Extracellular glucosylceramide levels (plasma) were slightly higher in GBA-PD compared with both iPD and HVs, while intracellular levels were comparable. GSLs in the different matrices (plasma, PBMCs, CSF) did not correlate. Both lactosylceramide and glucosylsphingosine were more abundant in granulocytes compared with monocytes and lymphocytes. Absolute levels of GSL isoforms differed greatly. GBA1 mutation types could not be differentiated based on GSL data. CONCLUSIONS Glucosylceramide can stably be measured over days in both plasma and PBMCs and may be used as a biomarker in clinical trials targeting GBA-PD. Glucosylsphingosine and lactosylceramide are stable in plasma but are strongly affected by leukocyte subtypes in PBMCs. GBA-PD could be differentiated from iPD and HVs, primarily based on glucosylceramide levels in plasma. © 2023 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Jonas M den Heijer
- Centre for Human Drug Research, Leiden, The Netherlands.,Leiden University Medical Center, Leiden, The Netherlands
| | | | | | - Yalcin Yavuz
- Centre for Human Drug Research, Leiden, The Netherlands
| | | | | | - Matthijs Moerland
- Centre for Human Drug Research, Leiden, The Netherlands.,Leiden University Medical Center, Leiden, The Netherlands
| | - Nancy Leymarie
- Lysosomal Therapeutics Inc., Cambridge, Massachusetts, USA
| | - Kshitij Khatri
- Lysosomal Therapeutics Inc., Cambridge, Massachusetts, USA
| | | | | | | | - Dana C Hilt
- Lysosomal Therapeutics Inc., Cambridge, Massachusetts, USA
| | - Craig Justman
- Lysosomal Therapeutics Inc., Cambridge, Massachusetts, USA
| | - Peter Lansbury
- Lysosomal Therapeutics Inc., Cambridge, Massachusetts, USA
| | - Geert Jan Groeneveld
- Centre for Human Drug Research, Leiden, The Netherlands.,Leiden University Medical Center, Leiden, The Netherlands
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Aureli M, Mauri L, Carsana EV, Dobi D, Breviario S, Lunghi G, Sonnino S. Gangliosides and Cell Surface Ganglioside Metabolic Enzymes in the Nervous System. ADVANCES IN NEUROBIOLOGY 2023; 29:305-332. [DOI: 10.1007/978-3-031-12390-0_11] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Murai Y, Yuyama K, Mikami D, Igarashi Y, Monde K. Penta-deuterium-labeled 4E, 8Z-sphingadienine for rapid analysis in sphingolipidomics study. Chem Phys Lipids 2022; 245:105202. [PMID: 35337796 DOI: 10.1016/j.chemphyslip.2022.105202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/01/2022] [Accepted: 03/18/2022] [Indexed: 12/28/2022]
Abstract
The use of deuterium-incorporated bioactive compounds is an efficient method for tracing their metabolic fate and for quantitative analysis by mass spectrometry without complicated HPLC separation even if their amounts are extremely small. Plant sphingolipids and their metabolites, which have C4, 8-olefins on a common backbone as a sphingoid base, show unique and fascinating bioactivities compared to those of sphingolipids in mammals. However, the functional and metabolic mechanisms of exogenous plant sphingolipids have not been elucidated due to the difficulty in distinguishing exogenous sphingolipids from endogenous sphingolipids having the same polarity and same molecular weight by mass spectrometric analysis. Their roles might be elucidated by the use of deuterated probes with original biological and physicochemical properties. In this study, we designed (2S,3R,4E,8Z)-2-aminooctadeca-4,8-diene-17,17,18,18,18-d5-1,3-diol (penta-deuterium-labeled 4E, 8Z-sphingadienine) as a tracer for exogenous metabolic studies. In addition, the sphingadienine was confirmed to be metabolized in HEK293 cells and showed distinct peaks in mass spectrometric analysis.
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Affiliation(s)
- Yuta Murai
- Graduate School of Life Science, Kita 21 Nishi 11, Sapporo 001-0021, Japan; Faculty of Advanced Life Science, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan.
| | - Kohei Yuyama
- Lipid Biofunction Section, Faculty of Advanced Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Daisuke Mikami
- Lipid Biofunction Section, Faculty of Advanced Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Yasuyuki Igarashi
- Lipid Biofunction Section, Faculty of Advanced Life Science, Hokkaido University, Kita-21, Nishi-11, Kita-ku, Sapporo 001-0021, Japan
| | - Kenji Monde
- Graduate School of Life Science, Kita 21 Nishi 11, Sapporo 001-0021, Japan; Faculty of Advanced Life Science, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan.
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Abstract
Glycosphingolipids are amphiphilic plasma membrane components formed by a glycan linked to a specific lipid moiety. In this chapter we report on these compounds, on their role played in our cells to maintain the correct cell biology.In detail, we report on their structure, on their metabolic processes, on their interaction with proteins and from this, their property to modulate positively in health and negatively in disease, the cell signaling and cell biology.
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Aureli M, Samarani M, Loberto N, Chiricozzi E, Mauri L, Grassi S, Schiumarini D, Prinetti A, Sonnino S. Neuronal membrane dynamics as fine regulator of sphingolipid composition. Glycoconj J 2018; 35:397-402. [PMID: 30145639 DOI: 10.1007/s10719-018-9841-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 08/13/2018] [Indexed: 02/01/2023]
Abstract
Sphingolipid metabolism is an intricate network of several interdependent and co-regulated pathways. In addition to the mainstream biosynthetic and catabolic pathways, several processes, even if less important in contributing to the final tissue sphingolipid composition from the quantitative point of view, might become relevant when sphingolipid metabolism is for any reason dysregulated and concur to the onset of neuronal pathologies. The main subcellular sites involved in the mainstream metabolic pathway are represented by the Golgi apparatus (for the biosynthesis) and by the lysosomes (for catabolism). On the other hand, the minor collateral pathways are associated with the plasma membrane and membranes of other organelles, and likely play important roles in the local regulation of membrane dynamics and contribute to maintain a perfect membrane organization functional to the physiology of the cell. In this review, we will consider few aspects of the sphingolipid metabolic pathway depending by the dynamic of the membranes that seems to become relevant in neurodegenerative diseases.
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Affiliation(s)
- Massimo Aureli
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy.
| | - Maura Samarani
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy
| | - Nicoletta Loberto
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy.
| | - Elena Chiricozzi
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy
| | - Laura Mauri
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy
| | - Sara Grassi
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy
| | - Domitilla Schiumarini
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy
| | - Alessandro Prinetti
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy
| | - Sandro Sonnino
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Via Fratelli Cervi 93, 20090, Segrate, Milan, Italy
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Grassi S, Chiricozzi E, Mauri L, Sonnino S, Prinetti A. Sphingolipids and neuronal degeneration in lysosomal storage disorders. J Neurochem 2018; 148:600-611. [PMID: 29959861 DOI: 10.1111/jnc.14540] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 06/25/2018] [Accepted: 06/27/2018] [Indexed: 12/27/2022]
Abstract
Ceramide, sphingomyelin, and glycosphingolipids (both neutral and acidic) are characterized by the presence in the lipid moiety of an aliphatic base known as sphingosine. Altogether, they are called sphingolipids and are particularly abundant in neuronal plasma membranes, where, via interactions with the other membrane lipids and membrane proteins, they play a specific role in modulating the cell signaling processes. The metabolic pathways determining the plasma membrane sphingolipid composition are thus the key point for functional changes of the cell properties. Unnatural changes of the neuronal properties are observed in sphingolipidoses, lysosomal storage diseases occurring when a lysosomal sphingolipid hydrolase is not working, leading to the accumulation of the substrate and to its distribution to all the cell membranes interacting with lysosomes. Moreover, secondary accumulation of sphingolipids is a common trait of other lysosomal storage diseases. This article is part of the Special Issue "Lysosomal Storage Disorders".
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Affiliation(s)
- Sara Grassi
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Elena Chiricozzi
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Laura Mauri
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Sandro Sonnino
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Alessandro Prinetti
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
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Saito S, Murai Y, Usuki S, Yoshida M, Hammam MAS, Mitsutake S, Yuyama K, Igarashi Y, Monde K. Synthesis of Nontoxic Fluorous Sphingolipids as Molecular Probes of Exogenous Metabolic Studies for Rapid Enrichment by Fluorous Solid Phase Extraction. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shota Saito
- Graduate School of Life Science; Hokkaido University; Kita 21 Nishi 11 001-0021 Sapporo Japan
| | - Yuta Murai
- Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 001-0021 Sapporo Japan
| | - Seigo Usuki
- Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 001-0021 Sapporo Japan
| | - Masafumi Yoshida
- Graduate School of Life Science; Hokkaido University; Kita 21 Nishi 11 001-0021 Sapporo Japan
| | - Mostafa A. S. Hammam
- Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 001-0021 Sapporo Japan
| | - Susumu Mitsutake
- Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 001-0021 Sapporo Japan
| | - Kohei Yuyama
- Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 001-0021 Sapporo Japan
| | - Yasuyuki Igarashi
- Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 001-0021 Sapporo Japan
| | - Kenji Monde
- Faculty of Advanced Life Science; Hokkaido University; Kita 21 Nishi 11 001-0021 Sapporo Japan
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Singh A, Del Poeta M. Sphingolipidomics: An Important Mechanistic Tool for Studying Fungal Pathogens. Front Microbiol 2016; 7:501. [PMID: 27148190 PMCID: PMC4830811 DOI: 10.3389/fmicb.2016.00501] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 03/28/2016] [Indexed: 01/28/2023] Open
Abstract
Sphingolipids form of a unique and complex group of bioactive lipids in fungi. Structurally, sphingolipids of fungi are quite diverse with unique differences in the sphingoid backbone, amide linked fatty acyl chain and the polar head group. Two of the most studied and conserved sphingolipid classes in fungi are the glucosyl- or galactosyl-ceramides and the phosphorylinositol containing phytoceramides. Comprehensive structural characterization and quantification of these lipids is largely based on advanced analytical mass spectrometry based lipidomic methods. While separation of complex lipid mixtures is achieved through high performance liquid chromatography, the soft - electrospray ionization tandem mass spectrometry allows a high sensitivity and selectivity of detection. Herein, we present an overview of lipid extraction, chromatographic separation and mass spectrometry employed in qualitative and quantitative sphingolipidomics in fungi.
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Affiliation(s)
- Ashutosh Singh
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony BrookNY, USA; Veterans Administration Medical Center, NorthportNY, USA
| | - Maurizio Del Poeta
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony BrookNY, USA; Veterans Administration Medical Center, NorthportNY, USA
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9
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Abstract
The hypothesis that the Golgi apparatus is capable of sorting proteins and sending them to the plasma membrane through "lipid rafts," membrane lipid domains highly enriched in glycosphingolipids, sphingomyelin, ceramide, and cholesterol, was formulated by van Meer and Simons in 1988 and came to a turning point when it was suggested that lipid rafts could be isolated thanks to their resistance to solubilization by some detergents, namely Triton X-100. An incredible number of papers have described the composition and properties of detergent-resistant membrane fractions. However, the use of this method has also raised the fiercest criticisms. In this chapter, we would like to discuss the most relevant methodological aspects related to the preparation of detergent-resistant membrane fractions, and to discuss the importance of discriminating between what is present on a cell membrane and what we can prepare from cell membranes in a laboratory tube.
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10
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iPSC-derived neurons from GBA1-associated Parkinson's disease patients show autophagic defects and impaired calcium homeostasis. Nat Commun 2014; 5:4028. [PMID: 24905578 DOI: 10.1038/ncomms5028] [Citation(s) in RCA: 387] [Impact Index Per Article: 38.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 05/02/2014] [Indexed: 02/06/2023] Open
Abstract
Mutations in the acid β-glucocerebrosidase (GBA1) gene, responsible for the lysosomal storage disorder Gaucher's disease (GD), are the strongest genetic risk factor for Parkinson's disease (PD) known to date. Here we generate induced pluripotent stem cells from subjects with GD and PD harbouring GBA1 mutations, and differentiate them into midbrain dopaminergic neurons followed by enrichment using fluorescence-activated cell sorting. Neurons show a reduction in glucocerebrosidase activity and protein levels, increase in glucosylceramide and α-synuclein levels as well as autophagic and lysosomal defects. Quantitative proteomic profiling reveals an increase of the neuronal calcium-binding protein 2 (NECAB2) in diseased neurons. Mutant neurons show a dysregulation of calcium homeostasis and increased vulnerability to stress responses involving elevation of cytosolic calcium. Importantly, correction of the mutations rescues such pathological phenotypes. These findings provide evidence for a link between GBA1 mutations and complex changes in the autophagic/lysosomal system and intracellular calcium homeostasis, which underlie vulnerability to neurodegeneration.
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Gangliosides and Cell Surface Ganglioside Glycohydrolases in the Nervous System. ADVANCES IN NEUROBIOLOGY 2014; 9:223-44. [DOI: 10.1007/978-1-4939-1154-7_10] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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12
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Ionizing radiations increase the activity of the cell surface glycohydrolases and the plasma membrane ceramide content. Glycoconj J 2012; 29:585-97. [PMID: 22592846 DOI: 10.1007/s10719-012-9385-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 04/16/2012] [Accepted: 04/24/2012] [Indexed: 10/28/2022]
Abstract
We detected significant levels of β-glucosidase, β-galactosidase, sialidase Neu3 and sphingomyelinase activities associated with the plasma membrane of fibroblasts from normal and Niemann-Pick subjects and of cells from breast, ovary, colon and neuroblastoma tumors in culture. All of the cells subjected to ionizing radiations showed an increase of the activity of plasma membrane β-glucosidase, β-galactosidase and sialidase Neu3, in addition of the well known increase of activity of plasma membrane sphingomyelinase, under similar conditions. Human breast cancer cell line T47D was studied in detail. In these cells the increase of activity of β-glucosidase and β-galactosidase was parallel to the increase of irradiation dose up to 60 Gy and continued with time, at least up to 72 h from irradiation. β-glucosidase increased up to 17 times and β-galactosidase up to 40 times with respect to control. Sialidase Neu3 and sphingomyelinase increased about 2 times at a dose of 20 Gy but no further significant differences were observed with increase of radiation dose and time. After irradiation, we observed a reduction of cell proliferation, an increase of apoptotic cell death and an increase of plasma membrane ceramide up to 3 times, with respect to control cells. Tritiated GM3 ganglioside has been administered to T47D cells under conditions that prevented the lysosomal catabolism. GM3 became component of the plasma membranes and was transformed into LacCer, GlcCer and ceramide. The quantity of ceramide produced in irradiated cells was about two times that of control cells.
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Rusciani A, Duca L, Sartelet H, Chatron-Colliet A, Bobichon H, Ploton D, Le Naour R, Blaise S, Martiny L, Debelle L. Elastin peptides signaling relies on neuraminidase-1-dependent lactosylceramide generation. PLoS One 2010; 5:e14010. [PMID: 21103358 PMCID: PMC2982818 DOI: 10.1371/journal.pone.0014010] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Accepted: 10/25/2010] [Indexed: 11/19/2022] Open
Abstract
The sialidase activity of neuraminidase-1 (Neu-1) is responsible for ERK 1/2 pathway activation following binding of elastin peptide on the elastin receptor complex. In this work, we demonstrate that the receptor and lipid rafts colocalize at the plasma membrane. We also show that the disruption of these microdomains as well as their depletion in glycolipids blocks the receptor signaling. Following elastin peptide treatment, the cellular GM3 level decreases while lactosylceramide (LacCer) content increases consistently with a GM3/LacCer conversion. The use of lactose or Neu-1 siRNA blocks this process suggesting that the elastin receptor complex is responsible for this lipid conversion. Flow cytometry analysis confirms this elastin peptide-driven LacCer generation. Further, the use of a monoclonal anti-GM3 blocking antibody shows that GM3 is required for signaling. In conclusion, our data strongly suggest that Neu-1-dependent GM3/LacCer conversion is the key event leading to signaling by the elastin receptor complex. As a consequence, we propose that LacCer is an early messenger for this receptor.
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Affiliation(s)
- Anthony Rusciani
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
| | - Laurent Duca
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
- * E-mail:
| | - Hervé Sartelet
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
| | - Aurore Chatron-Colliet
- Laboratoire Médicament, Dynamique Intracellulaire, Architecture Nucléaire (MéDIAN), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté de Pharmacie, Reims, France
| | - Hélène Bobichon
- Laboratoire Médicament, Dynamique Intracellulaire, Architecture Nucléaire (MéDIAN), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté de Pharmacie, Reims, France
| | - Dominique Ploton
- Laboratoire Médicament, Dynamique Intracellulaire, Architecture Nucléaire (MéDIAN), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté de Pharmacie, Reims, France
| | - Richard Le Naour
- Laboratoire d'Immunologie et de Microbiologie, EA 4303 Inflammation et Immunité de l'appareil respiratoire, Faculté de Pharmacie, Reims, France
| | - Sébastien Blaise
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
| | - Laurent Martiny
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
| | - Laurent Debelle
- Laboratoire Signalisation et Récepteurs Matriciels (SiRMa), UMR CNRS 6237, Université de Reims Champagne Ardenne, Faculté des Sciences, Reims, France
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Fine tuning of cell functions through remodeling of glycosphingolipids by plasma membrane-associated glycohydrolases. FEBS Lett 2009; 584:1914-22. [DOI: 10.1016/j.febslet.2009.11.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2009] [Revised: 11/05/2009] [Accepted: 11/07/2009] [Indexed: 12/19/2022]
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Sandro S, Alessandro P. Membrane lipid domains and membrane lipid domain preparations: are they the same thing? TRENDS GLYCOSCI GLYC 2008. [DOI: 10.4052/tigg.20.315] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Rivaroli A, Prioni S, Loberto N, Bettiga A, Chigorno V, Prinetti A, Sonnino S. Reorganization of prion protein membrane environment during low potassium-induced apoptosis in primary rat cerebellar neurons. J Neurochem 2007; 103:1954-67. [PMID: 17854348 DOI: 10.1111/j.1471-4159.2007.04890.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We studied the changes occurring in the membrane environment of prion protein (PrP) during apoptosis induced by low potassium in primary rat cerebellar neurons. Ceramide levels increased during apoptosis-inducing treatment, being doubled with respect to time-matched controls after 24 h. Sphingomyelin levels were parallely decreased, while cholesterol and ganglioside contents were not affected. Changes in ceramide and sphingomyelin composition were exclusively restricted to a detergent-resistant membrane fraction. The pro-apoptotic treatment was accompanied by the down-regulation of PrP and of the non-receptor kinase Fyn. The levels of PrP and Fyn were correspondingly reduced in the detergent-resistant membrane fraction. In control cells, the membrane microenvironment separated by immunoprecipitation with anti-PrP antibody contained 80% of the detergent-resistant PrP and 35% and 38% of the sphingolipids and cholesterol respectively. Upon low potassium treatment, 20% of the PrP originally present in the detergent-resistant fraction was immunoprecipitated, together with 19% of sphingolipids and 22% of cholesterol. Thus, PrP in the immunoprecipitate from apoptotic cells was ninefold less than in control ones, while sphingolipids and cholesterol were about 50% with respect to controls cells. The molar ratio between cholesterol, sphingomyelin and ceramide was 15 : 6 : 1 in the PrP-rich environment from control neurons, and 6 : 2 : 1 in that from apoptotic cells.
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Affiliation(s)
- Anna Rivaroli
- Center of Excellence on Neurodegenerative Diseases, Study Center for the Biochemistry and Biotechnology of Glycolipids, Department of Medical Chemistry, Biochemistry and Biotechnology, University of Milan, Milan, Italy
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