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Rabionet M, Bernard P, Pichery M, Marsching C, Bayerle A, Dworski S, Kamani MA, Chitraju C, Gluchowski NL, Gabriel KR, Asadi A, Ebel P, Hoekstra M, Dumas S, Ntambi JM, Jacobsson A, Willecke K, Medin JA, Jonca N, Sandhoff R. Epidermal 1-O-acylceramides appear with the establishment of the water permeability barrier in mice and are produced by maturating keratinocytes. Lipids 2022; 57:183-195. [PMID: 35318678 DOI: 10.1002/lipd.12342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/11/2022] [Accepted: 03/11/2022] [Indexed: 12/17/2022]
Abstract
1-O-Acylceramides (1-OACs) have a fatty acid esterified to the 1-hydroxyl of the sphingosine head group of the ceramide, and recently we identified these lipids as natural components of human and mouse epidermis. Here we show epidermal 1-OACs arise shortly before birth during the establishment of the water permeability barrier in mice. Fractionation of human epidermis indicates 1-OACs concentrate in the stratum corneum. During in vitro maturation into reconstructed human epidermis, human keratinocytes dramatically increase 1-OAC levels indicating they are one source of epidermal 1-OACs. In search of potential enzymes responsible for 1-OAC synthesis in vivo, we analyzed mutant mice with deficiencies of ceramide synthases (Cers2, Cers3, or Cers4), diacylglycerol acyltransferases (Dgat1 or Dgat2), elongase of very long fatty acids 3 (Elovl3), lecithin cholesterol acyltransferase (Lcat), stearoyl-CoA desaturase 1 (Scd1), or acidic ceramidase (Asah1). Overall levels of 1-OACs did not decrease in any mouse model. In Cers3 and Dgat2-deficient epidermis they even increased in correlation with deficient skin barrier function. Dagt2 deficiency reshapes 1-OAC synthesis with an increase in 1-OACs with N-linked non-hydroxylated fatty acids and a 60% decrease compared to control in levels of 1-OACs with N-linked hydroxylated palmitate. As none of the single enzyme deficiencies we examined resulted in a lack of 1-OACs, we conclude that either there is functional redundancy in forming 1-OAC and more than one enzyme is involved, and/or an unknown acyltransferase of the epidermis performs the final step of 1-OAC synthesis, the implications of which are discussed.
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Affiliation(s)
- Mariona Rabionet
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany
| | - Pauline Bernard
- Infinity, Université Toulouse, CNRS, Inserm, UPS, Toulouse, France
| | - Melanie Pichery
- Infinity, Université Toulouse, CNRS, Inserm, UPS, Toulouse, France
| | - Christian Marsching
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany.,Center for Applied Research in Biomedical Mass Spectrometry (ABIMAS), Mannheim, Germany.,Center for Mass Spectrometry and Optical Spectroscopy (CeMOS), Mannheim University of Applied Sciences, Mannheim, Germany.,Instrumental Analytics and Bioanalytics, Mannheim University of Applied Sciences, Mannheim, Germany
| | - Aline Bayerle
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany
| | - Shaalee Dworski
- Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
| | | | - Chandramohan Chitraju
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA
| | - Nina L Gluchowski
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA.,Division of Gastroenterology and Nutrition, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Katlyn R Gabriel
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.,Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA.,Howard Hughes Medical Institute, Boston, Massachusetts, USA
| | - Abolfazl Asadi
- Department of Molecular Biosciences, The Wenner-Gren Institute, The Arrhenius Laboratories, Stockholm University, Stockholm, Sweden
| | - Philipp Ebel
- Molecular Genetics, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | - Menno Hoekstra
- Leiden Academic Centre for Drug Research, Division of BioTherapeutics, Leiden University, Leiden, Netherlands
| | - Sabrina Dumas
- Department of Nutritional sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - James M Ntambi
- Department of Nutritional sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA.,Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Anders Jacobsson
- Department of Molecular Biosciences, The Wenner-Gren Institute, The Arrhenius Laboratories, Stockholm University, Stockholm, Sweden
| | - Klaus Willecke
- Molecular Genetics, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | - Jeffrey A Medin
- Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada.,University Health Network, Toronto, Ontario, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada.,Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Nathalie Jonca
- Infinity, Université Toulouse, CNRS, Inserm, UPS, Toulouse, France.,CHU Toulouse, Hôpital Purpan, Laboratoire de Biologie Cellulaire et Cytologie, Institut Fédératif de Biologie, Toulouse, France
| | - Roger Sandhoff
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany.,Center for Applied Research in Biomedical Mass Spectrometry (ABIMAS), Mannheim, Germany
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2
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Bayerle A, Marsching C, Rabionet M, Dworski S, Kamani MA, Chitraju C, Gluchowski NL, Gabriel KR, Herzer S, Jennemann R, Levade T, Medin JA, Sandhoff R. Endogenous levels of 1-O-acylceramides increase upon acidic ceramidase deficiency and decrease due to loss of Dgat1 in a tissue-dependent manner. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158741. [PMID: 32474112 DOI: 10.1016/j.bbalip.2020.158741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 04/19/2020] [Accepted: 05/15/2020] [Indexed: 02/03/2023]
Abstract
Except for epidermis and liver, little is known about endogenous expression of 1-O-acylceramides (1-OACs) in mammalian tissue. Therefore, we screened several organs (brain, lung, liver, spleen, lymph nodes, heart, kidney, thymus, small intestine, and colon) from mice for the presence of 1-OACs by LC-MS2. In most organs, low levels of about 0.25-1.3 pmol 1-OACs/mg wet weight were recorded. Higher levels were detected in liver, small and large intestines, with about 4-13 pmol 1-OACs/mg wet weight. 1-OACs were esterified mainly with palmitic, stearic, or oleic acids. Esterification with saturated very long-chain fatty acids, as in epidermis, was not observed. Western-type diet induced 3-fold increased 1-OAC levels in mice livers while ceramides were unaltered. In a mouse model of Farber disease with a decrease of acid ceramidase activity, we observed a strong, up to 50-fold increase of 1-OACs in lung, thymus, and spleen. In contrast, 1-OAC levels were reduced 0.54-fold in liver. Only in lung 1-OAC levels correlated to changes in ceramide levels - indicating tissue-specific mechanisms of regulation. Glucosylceramide synthase deficiency in liver did not cause changes in 1-OAC or ceramide levels, whereas increased ceramide levels in glucosylceramide synthase-deficient small intestine caused an increase in 1-OAC levels. Deficiency of Dgat1 in mice resulted in a reduction of 1-OACs to 30% in colon, but not in small intestine and liver, going along with constant free ceramides levels. From these data, we conclude that Dgat1 as well as lysosomal lipid metabolism contribute in vivo to homeostatic 1-OAC levels in an organ-specific manner.
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Affiliation(s)
- Aline Bayerle
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany
| | - Christian Marsching
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany; Center for Applied Research in Biomedical Mass Spectrometry (ABIMAS), Mannheim, Germany; Instrumental Analytics and Bioanalytics, Mannheim University of Applied Sciences, Mannheim, Germany; Center for Mass Spectrometry and Optical Spectroscopy (CeMOS), Mannheim University of Applied Sciences, Mannheim, Germany
| | - Mariona Rabionet
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany
| | - Shaalee Dworski
- Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada
| | | | - Chandramohan Chitraju
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Cell Biology, Harvard Medical School, Boston, MA, USA
| | - Nina L Gluchowski
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Cell Biology, Harvard Medical School, Boston, MA, USA; Division of Gastroenterology and Nutrition, Boston Children's Hospital, Boston, MA, USA
| | - Katlyn R Gabriel
- Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Cell Biology, Harvard Medical School, Boston, MA, USA; Howard Hughes Medical Institute, Boston, MA, USA
| | - Silke Herzer
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany
| | - Richard Jennemann
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany
| | - Thierry Levade
- Laboratoire de Biochimie Métabolique, Institut Fédératif de Biologie, CHU Purpan, INSERM UMR1037 CRCT, Toulouse, France
| | - Jeffrey A Medin
- Institute of Medical Sciences, University of Toronto, Toronto, Ontario, Canada; University Health Network, Toronto, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada; Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Roger Sandhoff
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany; Center for Applied Research in Biomedical Mass Spectrometry (ABIMAS), Mannheim, Germany.
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Jennemann R, Federico G, Mathow D, Rabionet M, Rampoldi F, Popovic ZV, Volz M, Hielscher T, Sandhoff R, Gröne HJ. Inhibition of hepatocellular carcinoma growth by blockade of glycosphingolipid synthesis. Oncotarget 2017; 8:109201-109216. [PMID: 29312601 PMCID: PMC5752514 DOI: 10.18632/oncotarget.22648] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 10/28/2017] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the most frequent cancers. In vitro studies suggest that growth and response to therapy of human carcinomas may depend on glycosphingolipid (GSL) expression. Glucosylceramide synthase (GCS), encoded by the gene Ugcg, is the basic enzyme required for the synthesis of GSLs. Gene array analysis implied that Ugcg is significantly overexpressed in human HCC as compared to non-tumorous liver tissue. Therefore we have investigated whether tumor - genesis and - growth is altered in the absence of GSLs. An endogenous liver cancer model has been initiated by application of diethylnitrosamine in mice lacking Ugcg specifically in hepatocytes. We have now shown that hepatocellular tumor initiation and growth in mice is significantly inhibited by hepatic GSL deficiency in vivo. Neither the expression of cell cycle proteins, such as cyclins and pathways such as the MAP-kinase/Erk pathway nor the mTOR/Akt pathway as well as the number of liver infiltrating macrophages and T cells were essentially changed in tumors lacking GSLs. Significantly elevated bi-nucleation of atypical hepatocytes, a feature for impaired cytokinesis, was detected in tumors of mice lacking liver-specific GSLs. A reduction of proliferation and restricted growth of tumor microspheres due to delayed, GSL-dependent cytokinesis, analogous to the histopathologic phenotype in vivo could be demonstrated in vitro. GSL synthesis inhibition may thus constitute a potential therapeutic target for hepatocellular carcinoma.
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Affiliation(s)
- Richard Jennemann
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Giuseppina Federico
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Daniel Mathow
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Mariona Rabionet
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany.,Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany
| | - Francesca Rampoldi
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Zoran V Popovic
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Martina Volz
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Thomas Hielscher
- Division of Biostatistics, German Cancer Research Center, Heidelberg, Germany
| | - Roger Sandhoff
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany.,Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany
| | - Hermann-Josef Gröne
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
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Popovic ZV, Rabionet M, Jennemann R, Krunic D, Sandhoff R, Gröne HJ, Porubsky S. Glucosylceramide Synthase Is Involved in Development of Invariant Natural Killer T Cells. Front Immunol 2017; 8:848. [PMID: 28785267 PMCID: PMC5519558 DOI: 10.3389/fimmu.2017.00848] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 07/05/2017] [Indexed: 12/11/2022] Open
Abstract
Invariant natural killer T (iNKT) cells represent a unique population of CD1d-restricted T lymphocytes expressing an invariant T cell receptor encoded by Vα14-Jα18 and Vα24-Jα18 gene segments in mice and humans, respectively. Recognition of CD1d-loaded endogenous lipid antigen(s) on CD4/CD8-double positive (DP) thymocytes is essential for the development of iNKT cells. The lipid repertoire of DP thymocytes and the identity of the decisive endogenous lipid ligands have not yet been fully elucidated. Glycosphingolipids (GSL) were implicated to serve as endogenous ligands. However, further in vivo investigations were hampered by early embryonal lethality of mice deficient for the key GSL-synthesizing enzyme glucosylceramide (GlcCer) synthase [GlcCer synthase (GCS), EC 2.4.1.80]. We have now analyzed the GSL composition of DP thymocytes and shown that GlcCer represented the sole neutral GSL and the acidic fraction was composed of gangliosides. Furthermore, we report on a mouse model that by combination of Vav-promoter-driven iCre and floxed GCS alleles (VavCreGCSf/f) enabled an efficient depletion of GCS-derived GSL very early in the T cell development, reaching a reduction by 99.6% in DP thymocytes. Although the general T cell population remained unaffected by this depletion, iNKT cells were reduced by approximately 50% in thymus, spleen, and liver and showed a reduced proliferation and an increased apoptosis rate. The Vβ-chains repertoire and development of iNKT cells remained unaltered. The GSL-depletion neither interfered with expression of CD1d, SLAM, and Ly108 molecules nor impeded the antigen presentation on DP thymocytes. These results indicate that GlcCer-derived GSL, in particular GlcCer, contribute to the homeostatic development of iNKT cells.
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Affiliation(s)
- Zoran V Popovic
- Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany.,Institute of Pathology, University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Mariona Rabionet
- Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Richard Jennemann
- Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Damir Krunic
- Light Microscopy Facility, German Cancer Research Center, Heidelberg, Germany
| | - Roger Sandhoff
- Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Hermann-Josef Gröne
- Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
| | - Stefan Porubsky
- Cellular and Molecular Pathology, German Cancer Research Center, Heidelberg, Germany
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Palomeras S, Díaz Lagares Á, Blancafort A, Sarrats A, Crujeiras Martinez A, Sandoval J, Rabionet M, Welm A, Esteller M, Puig T. DNA methylation signature to identify trastuzumab response in HER2 breast cancer models. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx138.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Rabionet M, Bayerle A, Jennemann R, Heid H, Fuchser J, Marsching C, Porubsky S, Bolenz C, Guillou F, Gröne HJ, Gorgas K, Sandhoff R. Male meiotic cytokinesis requires ceramide synthase 3-dependent sphingolipids with unique membrane anchors. Hum Mol Genet 2015; 24:4792-808. [DOI: 10.1093/hmg/ddv204] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 05/29/2015] [Indexed: 12/11/2022] Open
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Mathow D, Chessa F, Rabionet M, Kaden S, Jennemann R, Sandhoff R, Gröne HJ, Feuerborn A. Zeb1 affects epithelial cell adhesion by diverting glycosphingolipid metabolism. EMBO Rep 2015; 16:321-31. [PMID: 25643708 DOI: 10.15252/embr.201439333] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
This study proposes that the transcription factor Zeb1 modulates epithelial cell adhesion by diverting glycosphingolipid metabolism. Zeb1 promotes expression of a-series glycosphingolipids via regulating expression of GM3 synthase (St3gal5), which mechanistically involves Zeb1 binding to the St3gal5 promoter as well as suppressing microRNA-mediated repression of St3gal5. Functionally, the repression of St3gal5 suffices to elevate intercellular adhesion and expression of distinct junction-associated proteins, reminiscent of knockdown of Zeb1. Conversely, overexpressing St3gal5 sensitizes cells towards TGF-β1-induced disruption of cell-cell interaction and partially antagonizes elevation of intercellular adhesion imposed by Zeb1 knockdown. These results highlight a direct connection of glycosphingolipid metabolism and epithelial cell adhesion via Zeb1.
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Affiliation(s)
- Daniel Mathow
- Department of Cellular and Molecular Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Federica Chessa
- Department of Cellular and Molecular Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Mariona Rabionet
- Department of Cellular and Molecular Pathology, Lipid Pathobiochemistry Group German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Sylvia Kaden
- Department of Cellular and Molecular Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Richard Jennemann
- Department of Cellular and Molecular Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Roger Sandhoff
- Department of Cellular and Molecular Pathology, Lipid Pathobiochemistry Group German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Hermann-Josef Gröne
- Department of Cellular and Molecular Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany h.-
| | - Alexander Feuerborn
- Department of Cellular and Molecular Pathology, German Cancer Research Center (DKFZ), Heidelberg, Germany Sir William Dunn School of Pathology, University of Oxford, Oxford, UK h.-
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Marsching C, Rabionet M, Mathow D, Jennemann R, Kremser C, Porubsky S, Bolenz C, Willecke K, Gröne HJ, Hopf C, Sandhoff R. Renal sulfatides: sphingoid base-dependent localization and region-specific compensation of CerS2-dysfunction. J Lipid Res 2014; 55:2354-69. [PMID: 25267995 DOI: 10.1194/jlr.m051839] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Mammalian kidneys are rich in sulfatides. Papillary sulfatides, especially, contribute to renal adaptation to chronic metabolic acidosis. Due to differences in their cer-amide (Cer) anchors, the structural diversity of renal sulfatides is large. However, the underling biological function of this complexity is not understood. As a compound's function and its tissue location are intimately connected, we analyzed individual renal sulfatide distributions of control and Cer synthase 2 (CerS)2-deficient mice by imaging MS (IMS) and by LC-MS(2) (in controls for the cortex, medulla, and papillae separately). To explain locally different structures, we compared our lipid data with regional mRNA levels of corresponding anabolic enzymes. The combination of IMS and in source decay-LC-MS(2) analyses revealed exclusive expression of C20-sphingosine-containing sulfatides within the renal papillae, whereas conventional C18-sphingosine-containing compounds were predominant in the medulla, and sulfatides with a C18-phytosphingosine were restricted to special cortical structures. CerS2 deletion resulted in bulk loss of sulfatides with C23/C24-acyl chains, but did not lead to decreased urinary pH, as previously observed in sulfatide-depleted kidneys. The reasons may be the almost unchanged C22-sulfatide levels and constant total renal sulfatide levels due to compensation with C16- to C20-acyl chain-containing compounds. Intriguingly, CerS2-deficient kidneys were completely depleted of phytosphingosine-containing cortical sulfatides without any compensation.
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Affiliation(s)
- Christian Marsching
- Center for Applied Research "Applied Biomedical Mass Spectrometry" (ABIMAS), Mannheim, Germany Lipid Pathobiochemistry Group within Department of Cellular and Molecular Pathology German Cancer Research Center (DKFZ), Heidelberg, Germany Institute of Medical Technology, University of Heidelberg and Mannheim University of Applied Sciences, Mannheim, Germany
| | - Mariona Rabionet
- Lipid Pathobiochemistry Group within Department of Cellular and Molecular Pathology German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Daniel Mathow
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Christiane Kremser
- Molecular Genetics, Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany
| | | | - Christian Bolenz
- University Medical Center Mannheim, University of Heidelberg, Mannheim, Germany
| | - Klaus Willecke
- Molecular Genetics, Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany
| | - Hermann-Josef Gröne
- Center for Applied Research "Applied Biomedical Mass Spectrometry" (ABIMAS), Mannheim, Germany German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Carsten Hopf
- Center for Applied Research "Applied Biomedical Mass Spectrometry" (ABIMAS), Mannheim, Germany Institute of Medical Technology, University of Heidelberg and Mannheim University of Applied Sciences, Mannheim, Germany Lipid Pathobiochemistry Group within Department of Cellular and Molecular Pathology
| | - Roger Sandhoff
- Center for Applied Research "Applied Biomedical Mass Spectrometry" (ABIMAS), Mannheim, Germany Lipid Pathobiochemistry Group within Department of Cellular and Molecular Pathology German Cancer Research Center (DKFZ), Heidelberg, Germany Instrumental Analytics and Bioanalytics, Mannheim University of Applied Sciences, Mannheim, Germany
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9
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Rabionet M, Bayerle A, Marsching C, Jennemann R, Gröne HJ, Yildiz Y, Wachten D, Shaw W, Shayman JA, Sandhoff R. 1-O-acylceramides are natural components of human and mouse epidermis. J Lipid Res 2013; 54:3312-21. [PMID: 24078707 DOI: 10.1194/jlr.m040097] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The lipid-rich stratum corneum functions as a barrier against pathogens and desiccation inter alia by an unbroken meshwork of extracellular lipid lamellae. These lamellae are composed of cholesterol, fatty acids, and ceramides (Cers) in an equimolar ratio. The huge class of skin Cers consists of three groups: group I, "classical" long and very long chain Cers; group II, ultra-long chain Cers; and group III, ω-esterified ultra-long chain Cers, which are esterified either with linoleic acid or with cornified envelope proteins and are required for the water permeability barrier. Here, we describe 1-O-acylceramides as a new class of epidermal Cers in humans and mice. These Cers contain, in both the N- and 1-O-position, long to very long acyl chains. They derive from the group I of classical Cers and make up 5% of all esterified Cers. Considering their chemical structure and hydrophobicity, we presume 1-O-acylceramides to contribute to the water barrier homeostasis. Biosynthesis of 1-O-acylceramides is not dependent on lysosomal phospholipase A2. However, glucosylceramide synthase deficiency was followed by a 7-fold increase of 1-O-acylceramides, which then contributed 30% to all esterified Cers. Furthermore, loss of neutral glucosylceramidase resulted in decreased levels of a 1-O-acylceramide subgroup. Therefore, we propose 1-O-acylceramides to be synthesized at endoplasmic reticulum-related sites.
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Affiliation(s)
- Mariona Rabionet
- Lipid Pathobiochemistry Group within, German Cancer Research Center (DKFZ), Heidelberg, Germany
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10
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Amen N, Mathow D, Rabionet M, Sandhoff R, Langbein L, Gretz N, Jäckel C, Gröne HJ, Jennemann R. Differentiation of epidermal keratinocytes is dependent on glucosylceramide:ceramide processing. Hum Mol Genet 2013; 22:4164-79. [DOI: 10.1093/hmg/ddt264] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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11
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Ginkel C, Hartmann D, vom Dorp K, Zlomuzica A, Farwanah H, Eckhardt M, Sandhoff R, Degen J, Rabionet M, Dere E, Dörmann P, Sandhoff K, Willecke K. Ablation of neuronal ceramide synthase 1 in mice decreases ganglioside levels and expression of myelin-associated glycoprotein in oligodendrocytes. J Biol Chem 2012; 287:41888-902. [PMID: 23074226 DOI: 10.1074/jbc.m112.413500] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Ceramide synthase 1 (CerS1) catalyzes the synthesis of C18 ceramide and is mainly expressed in the brain. Custom-made antibodies to a peptide from the C-terminal region of the mouse CerS1 protein yielded specific immunosignals in neurons but no other cell types of wild type brain, but the CerS1 protein was not detected in CerS1-deficient mouse brains. To elucidate the biological function of CerS1-derived sphingolipids in the brain, we generated CerS1-deficient mice by introducing a targeted mutation into the coding region of the cers1 gene. General deficiency of CerS1 in mice caused a foliation defect, progressive shrinkage, and neuronal apoptosis in the cerebellum. Mass spectrometric analyses revealed up to 60% decreased levels of gangliosides in cerebellum and forebrain. Expression of myelin-associated glycoprotein was also decreased by about 60% in cerebellum and forebrain, suggesting that interaction and stabilization of oligodendrocytic myelin-associated glycoprotein by neuronal gangliosides is due to the C18 acyl membrane anchor of CerS1-derived precursor ceramides. A behavioral analysis of CerS1-deficient mice yielded functional deficits including impaired exploration of novel objects, locomotion, and motor coordination. Our results reveal an essential function of CerS1-derived ceramide in the regulation of cerebellar development and neurodevelopmentally regulated behavior.
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Jennemann R, Rabionet M, Gorgas K, Epstein S, Dalpke A, Rothermel U, Bayerle A, van der Hoeven F, Imgrund S, Kirsch J, Nickel W, Willecke K, Riezman H, Gröne HJ, Sandhoff R. Loss of ceramide synthase 3 causes lethal skin barrier disruption. Hum Mol Genet 2011; 21:586-608. [PMID: 22038835 DOI: 10.1093/hmg/ddr494] [Citation(s) in RCA: 213] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The stratum corneum as the outermost epidermal layer protects against exsiccation and infection. Both the underlying cornified envelope (CE) and the intercellular lipid matrix contribute essentially to these two main protective barriers. Epidermis-unique ceramides with ultra-long-chain acyl moities (ULC-Cers) are key components of extracellular lipid lamellae (ELL) and are bound to CE proteins, thereby contributing to the cornified lipid envelope (CLE). Here, we identified human and mouse ceramide synthase 3 (CerS3), among CerS1-6, to be exclusively required for the ULC-Cer synthesis in vitro and of mouse CerS3 in vivo. Deficiency of CerS3 in mice results in complete loss of ULC-Cers (≥C26), lack of continuous ELL and a non-functional CLE. Consequently, newborn mutant mice die shortly after birth from transepidermal water loss. Mutant skin is prone to Candida albicans infection highlighting ULC-Cers to be pivotal for both barrier functions. Persistent periderm, hyperkeratosis and deficient cornification are hallmarks of mutant skin demonstrating loss of Cers to trigger a keratinocyte maturation arrest at an embryonic pre-barrier stage.
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Affiliation(s)
- Richard Jennemann
- Cellular & Molecular Pathology, German Cancer Research Center, 69120 Heidelberg, Germany
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Rabionet M, Jennemann R, Gorgas K, Gröne HJ, Sandhoff R. Ceramide synthase 3 is really a longevity assurance gene! Chem Phys Lipids 2010. [DOI: 10.1016/j.chemphyslip.2010.05.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Rabionet M, Nickel W, Gröne HJ, Sandhoff R. Ceramide synthase 3 and the biosynthesis of sphingolipids with very long chain fatty acids. Chem Phys Lipids 2009. [DOI: 10.1016/j.chemphyslip.2009.06.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rabionet M, Nickel W, Gröne HJ, Sandhoff R. Ceramide synthase 3 and the biosynthesis of sphingolipids with very long chain fatty acids. Chem Phys Lipids 2009. [DOI: 10.1016/j.chemphyslip.2009.06.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Rabionet M, van der Spoel AC, Chuang CC, von Tümpling-Radosta B, Litjens M, Bouwmeester D, Hellbusch CC, Körner C, Wiegandt H, Gorgas K, Platt FM, Gröne HJ, Sandhoff R. Male germ cells require polyenoic sphingolipids with complex glycosylation for completion of meiosis: a link to ceramide synthase-3. J Biol Chem 2008; 283:13357-69. [PMID: 18308723 DOI: 10.1074/jbc.m800870200] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Previously, it was found that a novel class of neutral fucosylated glycosphingolipids (GSLs) is required for male fertility. These lipids contain very long-chain (C26-C32) polyunsaturated (4-6 double bonds) fatty acid residues (VLC-PUFAs). To assess the role of these complex GSLs in spermatogenesis, we have now investigated with which of the testicular cell types these lipids are associated. During postnatal development, complex glycosylated and simple VLC-PUFA sphingolipids were first detectable at day 15, when the most advanced germ cells are pachytene spermatocytes. Their synthesis is most likely driven by ceramide synthase-3. This enzyme is encoded by the Cers3/Lass3 gene (longevity assurance genes), and out of six members of this gene family, only Cers3 mRNA expression was limited to germ cells, where it was up-regulated more than 700-fold during postnatal testicular maturation. Increasing levels of neutral complex VLC-PUFA GSLs also correlated with the progression of spermatogenesis in a series of male sterile mutants with arrests at different stages of spermatogenesis. Remarkably, fucosylation of the complex VLC-PUFA GSLs was not essential for spermatogenesis, as fucosylation-deficient mice produced nonfucosylated versions of the complex testicular VLC-PUFA GSLs, had complete spermatogenesis, and were fertile. Nevertheless, sterile Galgt1(-/-) mice, with a defective meiotic cytokinesis and a subsequent block in spermiogenesis, lacked complex but contained simple VLC-PUFA GSLs, as well as VLC-PUFA ceramides and sphingomyelins, indicating that the latter lipids are not sufficient for completion of spermatogenesis. Thus, our data imply that both glycans and the particular acyl chains of germinal sphingolipids are relevant for proper completion of meiosis.
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Affiliation(s)
- Mariona Rabionet
- Department of Cellular and Molecular Pathology, German Cancer Research Center, INF 280, 69120 Heidelberg, Germany
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Ide-Ektessabi A, Rabionet M. The Role of Trace Metallic Elements in Neurodegenerative Disorders: Quantitative Analysis Using XRF and XANES Spectroscopy. ANAL SCI 2005; 21:885-92. [PMID: 16038516 DOI: 10.2116/analsci.21.885] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The present paper focuses on the analysis of trace metallic elements and their role in neurodegenerative disorders. The use of synchrotron radiation microbeams allows investigation of pathological tissues from Alzheimer's disease, Parkinson's disease and Amyotrophic lateral sclerosis cases in a nondestructive manner and at cellular level. By employing X-ray absorption near edge structure (XANES) technique, the chemical state of the investigated elements can be determined, while energy-selective X-ray fluorescence spectroscopy provides the spatial distribution of each element in each oxidative state selectively. The investigated tissues (derived from human, monkey and mouse specimens) show distinct imbalances of metallic elements such as Zn and Cu as well as Fe(2+)/Fe(3+) redox pair, which point to oxidative stress as a crucial factor in the development or progress of these neurodegenerative diseases.
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Affiliation(s)
- Ari Ide-Ektessabi
- Kyoto University International Innovation Center, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan.
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