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Tsukimura T, Saito K, Shiga T, Ogawa Y, Sakuraba H, Togawa T. Does administration of hydroxychloroquine/amiodarone affect the efficacy of enzyme replacement therapy for Fabry mice? Mol Genet Metab Rep 2024; 39:101079. [PMID: 38601121 PMCID: PMC11004688 DOI: 10.1016/j.ymgmr.2024.101079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/23/2024] [Accepted: 03/29/2024] [Indexed: 04/12/2024] Open
Abstract
As a standard therapy for Fabry disease, enzyme replacement therapy (ERT) with recombinant human α-galactosidase A (α-Gal) has been successfully used, and the instructions for this drug state that "it should not be co-administrated with cationic amphiphilic drugs such as hydroxychloroquine (HCQ) and amiodarone (AMI), since these drugs have the potential to inhibit intracellular α-Gal activity". However, there would be cases in which HCQ or AMI is required for patients with Fabry disease, considering their medical efficacy and application. Thus, we examined the impact of HCQ/AMI on recombinant human α-Gal by in vitro, cellular, and animal experiments. The results revealed that HCQ/AMI affected the enzyme activity of α-Gal incorporated into cultured fibroblasts from a Fabry mouse when the cells were cultured in medium containing these drugs and the enzyme, although their direct inhibitory effect on the enzyme is not strong. These lysosomotropic drugs may be trapped and concentrated in lysosomes, followed by inhibition of α-Gal. On the other hand, no reduction of α-Gal activity incorporated into the organs and tissues, or acceleration of glycoshingolipid accumulation was observed in Fabry mice co-administered with HCQ/AMI and the enzyme, compared with in the case of usual ERT. As HCQ/AMI administered are catabolized in the liver, these drugs possibly do not affect ERT for Fabry mice, different from in the case of cultured cells in an environment isolated from the surroundings.
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Affiliation(s)
- Takahiro Tsukimura
- Department of Functional Bioanalysis, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Koki Saito
- Department of Functional Bioanalysis, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Tomoko Shiga
- Department of Clinical Genetics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Yasuhiro Ogawa
- Department of Pharmacodynamics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Hitoshi Sakuraba
- Department of Clinical Genetics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Tadayasu Togawa
- Department of Functional Bioanalysis, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
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Chiang YC, Wu CY, Chiang PY, Adak AK, Lin CC. A concise chemoenzymatic total synthesis of neutral Globo-series glycosphingolipids Globo A and Globo B, and Forssman and para-Forssman antigens. Glycoconj J 2023; 40:551-563. [PMID: 37606864 DOI: 10.1007/s10719-023-10133-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 11/18/2022] [Accepted: 07/26/2023] [Indexed: 08/23/2023]
Abstract
Globo A is a neutral Globo-series glycosphingolipid (GSL) that shows natural properties of a cytotoxicity receptor NKp44 binding ligand. The highly complex heptasaccharide glycan structure of Globo A combined with its biological profile provides a unique target for the development of a synthetic method to facilitate its bioactivity studies. Here, a concise chemoenzymatic route to the synthesis of Globo A and its α1,3-galactose-linked congener Globo B is reported. The key to success was the use of a synthetic azido β-Globo H sphingosine (Globo H-βSph) as an acceptor substrate and two glycosyl transferases, an α1,3-N-acetylgalactosaminyltransferase from Helicobacter mustelae (BgtA) and a human blood group B α1,3-galactosyltransferase (h1,3GTB), for stereoselective construction of the terminal α1,3-GalNAc and α1,3-Gal linkages, respectively. The azido-Sph lipid sidechain is further elaborated by reduction and a chemoselective N-acylation to complete the total synthesis of the neutral Globo-series GSLs. In addition, the synthesis of Forssman and para-Forssman antigens were prepared. The strategy may be suitable for accessing other complex GSLs and related lipid-modified GSL derivatives.
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Affiliation(s)
- Yu-Ching Chiang
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang Fu Road, Hsinchu, 30013, Taiwan
| | - Chun-Yen Wu
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang Fu Road, Hsinchu, 30013, Taiwan
| | - Pei-Yun Chiang
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang Fu Road, Hsinchu, 30013, Taiwan
| | - Avijit K Adak
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang Fu Road, Hsinchu, 30013, Taiwan.
| | - Chun-Cheng Lin
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang Fu Road, Hsinchu, 30013, Taiwan.
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
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Zhang X, Zeng B, Zhu H, Ma R, Yuan P, Chen Z, Su C, Liu Z, Yao X, Lawrence A, Liu Z, Zou J. Role of glycosphingolipid biosynthesis coregulators in malignant progression of thymoma. Int J Biol Sci 2023; 19:4442-4456. [PMID: 37781041 PMCID: PMC10535712 DOI: 10.7150/ijbs.83468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 08/14/2023] [Indexed: 10/03/2023] Open
Abstract
As the most common malignancy from mediastinum, the metabolic reprogramming of thymoma is important in its development. Nevertheless, the connection between the metabolic map and thymoma development is yet to be discovered. Thymoma was categorized into three subcategories by unsupervised clustering of molecular markers for metabolic pathway presentation in the TCGA dataset. Different genes and functions enriched were demonstrated through the utilization of metabolic Gene Ontology (GO) analysis. To identify the main contributors in the development of thymic malignancy, we utilized Gene Set Enrichment Analysis (GSEA), Gene Set Variation Analysis (GSVA), and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. The prognosis of thymoma was evaluated by screening the essential pathways and genes using GSVA scores and machine learning classifiers. Furthermore, we integrated the transcriptomics findings with spectrum metabolomics investigation, detected through LC-MS/MS, in order to establish the essential controller network of metabolic reprogramming during thymoma progression. The thymoma prognosis is related to glycosphingolipid biosynthesis-lacto and neolacto series pathway, of what high B3GNT5 indicate poor survival. The investigation revealed that glycosphingolipid charts have a significant impact on metabolic dysfunction and could potentially serve as crucial targets in the clinical advancement of metabolic therapy.
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Affiliation(s)
- Xin Zhang
- Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Bo Zeng
- Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Haoshuai Zhu
- Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Rui Ma
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510655, China
| | - Ping Yuan
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510655, China
| | - Zhenguang Chen
- Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Chunhua Su
- Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Zhihao Liu
- Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Xiaojing Yao
- Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Aurora Lawrence
- School of Medicine, Stanford University, 450 Serra Mall, Stanford, CA 94305, USA
| | - Zhenguo Liu
- Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
| | - Jianyong Zou
- Department of Thoracic Surgery, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, China
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Ito M, Chisada S, Matsunaga N, Okino N. Vibrio-binding gangliosides in fish intestinal tracts. Glycoconj J 2023; 40:315-322. [PMID: 36933118 DOI: 10.1007/s10719-023-10110-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/23/2023] [Accepted: 02/27/2023] [Indexed: 03/19/2023]
Abstract
It has been clarified that pathogens bind to glycosphingolipid (GSL) receptors in mammals, but there have been very few reports on pathogen-binding GSLs in fish. Vibrios are facultative anaerobic bacteria ubiquitous in marine and brackish environments. They are members of the normal intestinal microflora of healthy fish, but some species can cause a disease called vibriosis in fish and shellfish when the hosts are physiologically or immunologically weakened. The adherence of vibrios to host intestinal tracts is a significant event not only for survival and growth but also in terms of pathogenicity. We show in this mini-review that sialic acid-containing GSLs (gangliosides), GM4 and GM3, are receptors to which vibrios adhere to epithelial cells in the intestinal tract of fish. We also describe the enzymes responsible for synthesizing these Vibrio-binding gangliosides in fish.
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Affiliation(s)
- Makoto Ito
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School Kyushu University, Motooka 744, Nishi-ku, Fukuoka, 819-0385, Japan.
| | - Shinichi Chisada
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School Kyushu University, Motooka 744, Nishi-ku, Fukuoka, 819-0385, Japan.,Department of Hygiene and Public Health, Kyorin University School of Medicine, Mitaka, Tokyo, 181-8611, Japan
| | - Naoyuki Matsunaga
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School Kyushu University, Motooka 744, Nishi-ku, Fukuoka, 819-0385, Japan.,Bizen Chemical Co. Ltd., 363 Tokudomi, Akaiwa-shi, Okayama, 709-0716, Japan
| | - Nozomu Okino
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School Kyushu University, Motooka 744, Nishi-ku, Fukuoka, 819-0385, Japan
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5
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Li TT, Li G, Hu R, Ji X, Liu C, Shao YT. Relationship of Sulfatides Physiological Function and Peroxisome Proliferator-Activated Receptor α. Neurochem Res 2023. [PMID: 36879104 DOI: 10.1007/s11064-023-03895-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 02/09/2023] [Accepted: 02/14/2023] [Indexed: 03/08/2023]
Abstract
Sulfatides are unique sphingolipids present in the serum and the plasma membrane. Sulfatides exert important functions in a number of systems in the human body, including the nervous, immune, cardiovascular, and coagulation systems.Furthermore, it is closely related to tumor occurrence, development, and metastasis. Peroxisome proliferators-activated receptor α (PPARα) is a class of the nuclear receptor superfamily of transcription factors, which is a potential regulator of sulfatides. This review not only summarizes the current knowledge on the physiological functions of sulfatides in various systems, but also discusses the possible PPARα regulatory mechanisms in sulfatide metabolism and functions. The results of the present analysis provide deep insights and further novel ideas for expanding the research on the physiological function and clinical application of sulfatides.
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6
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Iwabuchi K, Prinetti A. Afterword (Editorial). Glycoconj J 2023; 40:119-22. [PMID: 36322334 DOI: 10.1007/s10719-022-10090-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 10/13/2022] [Accepted: 10/18/2022] [Indexed: 11/06/2022]
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Yamaji T, Homma Y. Construction of Sphingolipid Remodeled Cells by Genome Editing. Methods Mol Biol 2023; 2613:111-125. [PMID: 36587075 DOI: 10.1007/978-1-0716-2910-9_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Sphingolipids are ubiquitously expressed in eukaryotes and play various functional roles. The key characteristic of sphingolipids is their diversity of molecular species. Sphingomyelin (SM) and glycosphingolipids (GSLs) are the major components of sphingolipids in the plasma membrane, which are composed of ceramide and a polar head-group. SM is the most abundant sphingolipid species in mammalian cells, while GSLs have a wide variety of glycans as head groups. Various fatty acids in ceramide also contribute to the diversity of sphingolipid species. To analyze the cellular function of each sphingolipid species, precise gene manipulation is essential. Recent developments in genome editing technologies have facilitated complete gene disruption in cultured cells. This chapter describes protocols for the construction of various sphingolipid-related gene knockout HeLa cells using the clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 system and for confirmation of changes in their lipid composition using radioisotopes and thin layer chromatography. This sphingolipid-remodeled cell panel is a useful tool for analyzing the cellular functions of sphingolipid species and as a reference for lipid analysis.
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Affiliation(s)
- Toshiyuki Yamaji
- Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, Tokyo, Japan.
| | - Yuta Homma
- Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, Tokyo, Japan
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8
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Itokazu Y, Fuchigami T, Yu RK. Functional Impairment of the Nervous System with Glycolipid Deficiencies. Adv Neurobiol 2023; 29:419-448. [PMID: 36255683 PMCID: PMC9793801 DOI: 10.1007/978-3-031-12390-0_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Patients with nervous system disorders suffer from impaired cognitive, sensory and motor functions that greatly inconvenience their daily life and usually burdens their family and society. It is difficult to achieve functional recovery for the damaged central nervous system (CNS) because of its limited ability to regenerate. Glycosphingolipids (GSLs) are abundant in the CNS and are known to play essential roles in cell-cell recognition, adhesion, signal transduction, and cellular migration, that are crucial in all phases of neurogenesis. Despite intense investigation of CNS regeneration, the roles of GSLs in neural regeneration remain unclear. Here we focus on the respective potentials of glycolipids to promote regeneration and repair of the CNS. Mice lacking glucosylceramide, lactosylceramide or gangliosides show lethal phenotypes. More importantly, patients with ganglioside deficiencies exhibit severe clinical phenotypes. Further, neurodegenerative diseases and mental health disorders are associated with altered GSL expression. Accumulating studies demonstrate that GSLs not only delimit physical regions but also play central roles in the maintenance of the biological functions of neurons and glia. We anticipate that the ability of GSLs to modulate behavior of a variety of molecules will enable them to ameliorate biochemical and neurobiological defects in patients. The use of GSLs to treat such defects in the human CNS will be a paradigm-shift in approach since GSL-replacement therapy has not yet been achieved in this manner clinically.
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Affiliation(s)
- Yutaka Itokazu
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA.
| | - Takahiro Fuchigami
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Robert K Yu
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
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Itokazu Y, Yu RK. Ganglioside Microdomains on Cellular and Intracellular Membranes Regulate Neuronal Cell Fate Determination. Adv Neurobiol 2023; 29:281-304. [PMID: 36255679 PMCID: PMC9772537 DOI: 10.1007/978-3-031-12390-0_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Gangliosides are sialylated glycosphingolipids (GSLs) with essential but enigmatic functions in brain activities and neural stem cell (NSC) maintenance. Our group has pioneered research on the importance of gangliosides for growth factor receptor signaling and epigenetic regulation of NSC activity and differentiation. The primary localization of gangliosides is on cell-surface microdomains and the drastic dose and composition changes during neural differentiation strongly suggest that they are not only important as biomarkers, but also are involved in modulating NSC fate determination. Ganglioside GD3 is the predominant species in NSCs and GD3-synthase knockout (GD3S-KO) revealed reduction of postnatal NSC pools with severe behavioral deficits. Exogenous administration of GD3 significantly restored the NSC pools and enhanced the stemness of NSCs with multipotency and self-renewal. Since morphological changes during neurogenesis require a huge amount of energy, mitochondrial functions are vital for neurogenesis. We discovered that a mitochondrial fission protein, the dynamin-related protein-1 (Drp1), as a novel GD3-binding protein, and GD3 regulates mitochondrial dynamics. Furthermore, we discovered that GM1 ganglioside promotes neuronal differentiation by an epigenetic regulatory mechanism. Nuclear GM1 binds with acetylated histones on the promoters of N-acetylgalactosaminyltransferase (GalNAcT; GM2 synthase) as well as on the NeuroD1 genes in differentiated neurons. In addition, epigenetic activation of the GalNAcT gene was detected as accompanied by an apparent induction of neuronal differentiation in NSCs responding to an exogenous supplement of GM1. GM1 is indeed localized in the nucleus where it can interact with transcriptionally active histones. Interestingly, GM1 could induce epigenetic activation of the tyrosine hydroxylase (TH) gene, with recruitment of nuclear receptor related 1 (Nurr1, also known as NR4A2), a dopaminergic neuron-associated transcription factor, to the TH promoter region. In this way, GM1 epigenetically regulates dopaminergic neuron specific gene expression. GM1 interacts with active chromatin via acetylated histones to recruit transcription factors at the nuclear periphery, resulting in changes in gene expression for neuronal differentiation. The significance is that multifunctional gangliosides modulate lipid microdomains to regulate functions of important molecules on multiple sites: the plasma membrane, mitochondrial membrane, and nuclear membrane. Versatile gangliosides could regulate functional neurons as well as sustain NSC functions via modulating protein and gene activities on ganglioside microdomains.
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Affiliation(s)
- Yutaka Itokazu
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Robert K Yu
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA.
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Sandhoff R, Sandhoff K. Neuronal Ganglioside and Glycosphingolipid (GSL) Metabolism and Disease : Cascades of Secondary Metabolic Errors Can Generate Complex Pathologies (in LSDs). Adv Neurobiol 2023; 29:333-390. [PMID: 36255681 DOI: 10.1007/978-3-031-12390-0_12] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Glycosphingolipids (GSLs) are a diverse group of membrane components occurring mainly on the surfaces of mammalian cells. They and their metabolites have a role in intercellular communication, serving as versatile biochemical signals (Kaltner et al, Biochem J 476(18):2623-2655, 2019) and in many cellular pathways. Anionic GSLs, the sialic acid containing gangliosides (GGs), are essential constituents of neuronal cell surfaces, whereas anionic sulfatides are key components of myelin and myelin forming oligodendrocytes. The stepwise biosynthetic pathways of GSLs occur at and lead along the membranes of organellar surfaces of the secretory pathway. After formation of the hydrophobic ceramide membrane anchor of GSLs at the ER, membrane-spanning glycosyltransferases (GTs) of the Golgi and Trans-Golgi network generate cell type-specific GSL patterns for cellular surfaces. GSLs of the cellular plasma membrane can reach intra-lysosomal, i.e. luminal, vesicles (ILVs) by endocytic pathways for degradation. Soluble glycoproteins, the glycosidases, lipid binding and transfer proteins and acid ceramidase are needed for the lysosomal catabolism of GSLs at ILV-membrane surfaces. Inherited mutations triggering a functional loss of glycosylated lysosomal hydrolases and lipid binding proteins involved in GSL degradation cause a primary lysosomal accumulation of their non-degradable GSL substrates in lysosomal storage diseases (LSDs). Lipid binding proteins, the SAPs, and the various lipids of the ILV-membranes regulate GSL catabolism, but also primary storage compounds such as sphingomyelin (SM), cholesterol (Chol.), or chondroitin sulfate can effectively inhibit catabolic lysosomal pathways of GSLs. This causes cascades of metabolic errors, accumulating secondary lysosomal GSL- and GG- storage that can trigger a complex pathology (Breiden and Sandhoff, Int J Mol Sci 21(7):2566, 2020).
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Affiliation(s)
- Roger Sandhoff
- Lipid Pathobiochemistry Group, German Cancer Research Center, Heidelberg, Germany
| | - Konrad Sandhoff
- LIMES, c/o Kekule-Institute for Organic Chemistry and Biochemistry, University of Bonn, Bonn, Germany.
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Benktander J, Sundh H, Sharba S, Teneberg S, Lindén SK. Aeromonas salmonicida binds α2-6 linked sialic acid, which is absent among the glycosphingolipid repertoires from skin, gill, stomach, pyloric caecum, and intestine. Virulence 2022; 13:1741-1751. [PMID: 36205522 PMCID: PMC9553145 DOI: 10.1080/21505594.2022.2132056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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] [Indexed: 11/25/2022] Open
Abstract
Carbohydrates can both protect against infection and act as targets promoting infection. Mucins are major components of the slimy mucus layer covering the fish epithelia. Mucins can act as decoys for intimate pathogen interaction with the host afforded by binding to glycosphingolipids in the host cell membrane. We isolated and characterized glycosphingolipids from Atlantic salmon skin, gill, stomach, pyloric caeca, and intestine. We characterized the glycosphingolipids using liquid chromatography – mass spectrometry and tandem mass spectrometry and the glycan repertoire was compared with the glycan repertoire of mucins from the same epithelia. We also investigated Aeromonas salmonicida binding using chromatogram and microtiter well based binding assays. We identified 29 glycosphingolipids. All detected acid glycans were of the ganglio-series (unless shorter) and showed a high degree of polysialylation. The non-acid glycans were mostly composed of the neolacto, globo, and ganglio core structures. The glycosphingolipid repertoire differed between epithelia and the proportion of the terminal moieties of the glycosphingolipids did not reflect the terminal moieties on the mucins from the same epithelia. A. salmonicida did not bind the Atlantic salmon glycosphingolipids. Instead, we identified that A. salmonicida binding to sialic acid occurred to α2–6 Neu5Ac but not to α2–3 Neu5Ac. α2–6 Neu5Ac was present on mucins whereas mainly α2–3 Neu5Ac was found on the glycosphingolipids, explaining the difference in A. salmonicida binding ability between these host glycoconjugates. A. salmonicida´s ability to bind to Atlantic salmon mucins, but not the glycosphingolipids, is likely part of the host defence against this pathogen.
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Affiliation(s)
- John Benktander
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Henrik Sundh
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Sinan Sharba
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Susann Teneberg
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Sara K Lindén
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Matsushita S, Noda K, Hara S, Aisu J, Hayashi A, Ikake H, Shimizu S, Tanigawa M, Ukiya M, Nishimura K, Nishina A, Suzuki Y. Rapid removal of detergent in glycolipids using ionic liquids. ANAL SCI 2022. [PMID: 35718829 DOI: 10.1007/s44211-022-00139-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/24/2022] [Indexed: 11/01/2022]
Abstract
Detergent removal in glycolipid after sample preparation, such as enzymatic reaction or isolation of detergent-resistant membrane microdomain, is indispensable for further structural characterization. We previously established the rapid and effective method of detergent removal in glycolipid samples from glass test tube using 1,2-dichloroethane (DCE) washing. However, the use of DCE has several drawbacks, such as environmental risks, harmful effects (potentially carcinogenic), and high vaporability and flammability. To solve the issue, we used ionic liquids to remove detergents from glycolipid samples, and found 1-butyl-3-methylimidazolium iodide was a suitable alternative for DCE.
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Seegers CII, Roth IR, Zarnovican P, Buettner FFR, Routier FH. Characterisation of a gene cluster involved in aspergillus fumigatus zwitterionic glycosphingolipid synthesis. Glycobiology 2022; 32:814-824. [PMID: 35713520 DOI: 10.1093/glycob/cwac036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 03/29/2022] [Revised: 05/30/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
The human pathogenic fungus Aspergillus fumigatus synthesises the zwitterionic glycolipid Manα1,3Manα1,6GlcNα1,2IPC, named Af3c. Similar glycosphingolipids having a glucosamine (GlcN) linked in α1,2 to inositolphosphoceramide (IPC) as core structure have only been described in a few pathogenic fungi. Here, we describe an Ammophilus fumigatus cluster of 5 genes (AFUA_8G02040 to AFUA_8G02090) encoding proteins required for the glycan part of the glycosphingolipid Af3c. Besides the already characterised UDP-GlcNAc:IPC α1,2-N-acetylglucosaminyltransferase (GntA), the cluster encodes a putative UDP-GlcNAc transporter (NstA), a GlcNAc de-N-acetylase (GdaA), and two mannosyltransferases (OchC and ClpC). The function of these proteins was inferred from analysis of the glycolipids extracted from A. fumigatus strains deficient in one of the genes. Moreover, successive introduction of the genes encoding GntA, GdaA, OchC and ClpC in the yeast Saccharomyces cerevisiae enabled the reconstitution of the Af3c biosynthetic pathway. Absence of Af3c slightly reduced the virulence of A. fumigatus in a Galleria mellonella infection model.
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Affiliation(s)
- Carla I I Seegers
- Institute for Clinical Biochemistry, OE4340, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
| | - Isabel Ramón Roth
- Institute for Clinical Biochemistry, OE4340, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
| | - Patricia Zarnovican
- Institute for Clinical Biochemistry, OE4340, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
| | - Falk F R Buettner
- Institute for Clinical Biochemistry, OE4340, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
| | - Françoise H Routier
- Institute for Clinical Biochemistry, OE4340, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
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14
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Liang YJ. Glycosphingolipids in human embryonic stem cells and breast cancer stem cells, and potential cancer therapy strategies based on their structures and functions. Glycoconj J 2022. [PMID: 35267131 DOI: 10.1007/s10719-021-10032-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/27/2021] [Accepted: 12/08/2021] [Indexed: 12/26/2022]
Abstract
Expression profiles of glycosphingolipids (GSLs) in human embryonic stem cell (hESC) lines and their differentiated embryoid body (EB) outgrowth cells, consisting of three germ layers, were surveyed systematically. Several globo- and lacto-series GSLs were identified in undifferentiated hESCs and during differentiation of hESCs to EB outgrowth cells, and core structure switching of these GSLs to gangliosides was observed. Such switching was attributable to altered expression of key glycosyltransferases (GTs) in GSL biosynthetic pathways, reflecting the unique stage-specific transitions and mechanisms characteristic of the differentiation process. Lineage-specific differentiation of hESCs was associated with further GSL alterations. During differentiation of undifferentiated hESCs to neural progenitor cells, core structure switching from globo- and lacto-series to primarily gangliosides (particularly GD3) was again observed. During differentiation to endodermal cells, alterations of GSL profiles were distinct from those in differentiation to EB outgrowth or neural progenitor cells, with high expression of Gb4Cer and low expression of stage-specific embryonic antigen (SSEA)-3, -4, or GD3 in endodermal cells. Again, such profile changes resulted from alterations of key GTs in GSL biosynthetic pathways. Novel glycan structures identified on hESCs and their differentiated counterparts presumably play functional roles in hESCs and related cancer or cancer stem cells, and will be useful as surface biomarkers. We also examined GSL expression profiles in breast cancer stem cells (CSCs), using a model of epithelial-mesenchymal transition (EMT)-induced human breast CSCs. We found that GD2 and GD3, together with their common upstream GTs, GD3 synthase (GD3S) and GD2/GM2 synthase, maintained stem cell phenotype in breast CSCs. Subsequent studies showed that GD3 was associated with epidermal growth factor receptor (EGFR), and activated EGFR signaling in breast CSCs and breast cancer cell lines. GD3S knockdown enhanced cytotoxicity of gefitinib (an EGFR kinase inhibitor) in resistant MDA-MB468 cells, both in vitro and in vivo. Our findings indicate that GD3S contributes to gefitinib resistance in EGFR-positive breast cancer cells, and is a potentially useful therapeutic target in drug-resistant breast cancers.
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15
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Ferraris Q, Alcazar A, Qian MC. Profiling polar lipids in whey protein phospholipid concentrate by LC-HRMS/MS. Food Chem 2021; 374:131495. [PMID: 34776307 DOI: 10.1016/j.foodchem.2021.131495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 04/26/2021] [Revised: 09/10/2021] [Accepted: 10/26/2021] [Indexed: 11/28/2022]
Abstract
Bioactive polar lipids in the milk fat globular membrane can be recovered and enriched during whey protein processing into a co-product called whey protein phospholipid concentrate (WPPC). A food-grade solvent successfully extracted polar lipids from powdered dairy products, and lipids can be fractionated under temperature-induced crystallization. This study investigates the specific lipid species present in ethanol extracted lipid residues from commercially available WPPC using a UPLC-Q-TOF-MS/MS lipidomics method. In general, sphingomyelins and phosphatidylcholines were retained in the polar lipid enriched fraction. Sphingomyelin was found to be a rich source of long chain fatty acids. Several glycosphingolipids, glucosyl-, galactosyl-, lactosyl-, and galabiosylceramide, were also detected in WPPC; these species were observed to crystallize away from other polar lipids during fractionation. Correlation analysis supported the claim that majority of polar lipids recovered in a total lipid extract using ethanol were retained in a polar lipid enriched residue after fractional crystallization.
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Affiliation(s)
- Quintin Ferraris
- Department of Food Science and Technology, Oregon State University, Corvallis, OR 97330, United States
| | - Armando Alcazar
- Department of Food Science and Technology, Oregon State University, Corvallis, OR 97330, United States; Department of Chemistry, Oregon State University, Corvallis, OR 97330, United States
| | - Michael C Qian
- Department of Food Science and Technology, Oregon State University, Corvallis, OR 97330, United States.
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16
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Gan J, Gao Q, Wang LL, Tian AP, Zhu LD, Zhang LT, Zhou W, Mao XR, Li JF. Glucosylceramide synthase regulates hepatocyte repair after concanavalin A-induced immune-mediated liver injury. PeerJ 2021; 9:e12138. [PMID: 34611503 PMCID: PMC8447939 DOI: 10.7717/peerj.12138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 05/07/2021] [Accepted: 08/18/2021] [Indexed: 11/20/2022] Open
Abstract
Background Sphingolipids produce pleiotropic signaling pathways, and participate in the pathological mechanism of hepatocyte apoptosis and necrosis during liver injury. However, the role of glucosylceramide synthase (GCS)-key enzyme that catalyzes the first glycosylation step, in liver injury is still vague. Methods All experiments were conducted using 7-9-week-old pathogen-free male C57BL/6 mice. Serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels were detected in murine models of liver disease, in addition to histological characterization of liver injuries. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the relative expression of the GCS, matrix metallopeptidase-1 (MMP-1), and tissue inhibitor of metalloproteinase-1 (TIMP-1) genes. The GCS was observed through a fluorescence microscope, and the flow cytometry was used to detect hepatocyte apoptosis. The concentrations of serum IL-4, IL-6, and IL-10 were measured using enzyme-linked immune-sorbent assay (ELISA) kit. MMP-1 and TIMP-1 protein expression was measured via western blot (WB) analysis. Results Con A is often used as a mitogen to activate T lymphocytes and promote mitosis. A single dose of Con A injected intravenously will cause a rapid increase of ALT and AST, which is accompanied by the release of cytokines that cause injury and necrosis of hepatocytes. In this study, we successfully induced acute immune hepatitis in mice by Con A. Con A administration resulted in GCS upregulation in liver tissues. Moreover, the mice in the Con A group had significantly higher levels of ALT, AST, IL-4, IL-6, IL-10 and increased hepatocyte apoptosis than the control group. In contrast, all of the aforementioned genes were significantly downregulated after the administration of a GCS siRNA or Genz-123346 (i.e., a glucosylceramide synthase inhibitor) to inhibit the GCS gene. Additionally, the histopathological changes observed herein were consistent with our ALT, AST, IL-4, IL-6, and IL-10 expression results. However, unlike this, hepatocyte apoptosis has been further increased on the basis of the Con A group. Moreover, our qRT-PCR and WB results indicated that the expression of MMP-1 in the Con A group was significantly lower than that in the control group, whereas TIMP-1 exhibited the opposite trend. Conversely, MMP-1 expression in the GCS siRNA and Genz-123346 groups was higher than that in the Con A group, whereas TIMP-1 expression was lower. Conclusions GCS inhibition reduces Con A-induced immune-mediated liver injury in mice, which may be due to the involvement of GCS in the hepatocyte repair process after injury.
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Affiliation(s)
- Jian Gan
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Qin Gao
- Physical Examination Center, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Li Li Wang
- Department of Radiology, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Ai Ping Tian
- Department of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Long Dong Zhu
- Department of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Li Ting Zhang
- Department of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Wei Zhou
- Institute of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Xiao Rong Mao
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China.,Department of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Jun Feng Li
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China.,Department of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Institute of Infectious Diseases, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
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17
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Abstract
Plasma membrane interaction is highly recognized as an essential step to start the intracellular events in response to extracellular stimuli. The ways in which these interactions take place are less clear and detailed. Over the last decade my research has focused on developing the understanding of the glycosphingolipids-protein interaction that occurs at cell surface. By using chemical synthesis and biochemical approaches we have characterized some fundamental interactions that are key events both in the immune response and in the maintenance of neuronal homeostasis. In particular, for the first time it has been demonstrated that a glycolipid, present on the outer side of the membrane, the long-chain lactosylceramide, is able to directly modulate a cytosolic protein. But the real conceptual change was the demonstration that the GM1 oligosaccharide chain is able, alone, to replicate numerous functions of GM1 ganglioside and to directly interact with plasma membrane receptors by activating specific cellular signaling. In this conceptual shift, the development and application of multidisciplinary techniques in the field of biochemistry, from chemical synthesis to bioinformatic analysis, as well as discussions with several national and international colleagues have played a key role.
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Affiliation(s)
- Elena Chiricozzi
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Milano, Italy.
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18
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Sugimoto J, Satoyoshi H, Takahata K, Muraoka S. Fabry disease-associated globotriaosylceramide induces mechanical allodynia via activation of signaling through proNGF-p75 NTR but not mature NGF-TrkA. Eur J Pharmacol 2021; 895:173882. [PMID: 33482180 DOI: 10.1016/j.ejphar.2021.173882] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 01/14/2023]
Abstract
Fabry disease (FD) is an X-linked metabolic storage disorder arising from the deficiency of lysosomal α-galactosidase A, which leads to the gradual accumulation of glycosphingolipids, mainly globotriaosylceramide (Gb3), throughout the body. Pain in the extremities is an early symptom of FD; however, the underlying pathophysiological mechanisms remain unknown. α-Galactosidase A knockout animals exhibit nociceptive behaviors, with enhanced expression levels of several ion channels. These characteristics are observed in animals treated with nerve growth factor (NGF). Here, we aimed to elucidate the potential of NGF signaling as a cause of FD-associated pain, using intraplantar Gb3-treated mice displaying mechanical allodynia. Treatment with a neutralizing antibody against a precursor of NGF (proNGF) or its receptor, p75 neurotrophin receptor (p75NTR), resulted in the recovery from Gb3-induced pain. Conversely, anti-NGF and anti-tropomyosin receptor kinase A antibodies failed to exert analgesic effects. Gb3 injection had no effects on the expression levels of proNGF and p75NTR in the plantar skin and dorsal root ganglia, suggesting that Gb3 activates the pain pathway, possibly mediated through functional up-regulation of proNGF-p75NTR signaling. Furthermore, by pharmacological approaches using a protein kinase A (PKA) inhibitor and a cholesterol-removing agent, we found that p75NTR-phosphorylating PKA and lipid rafts for phosphorylated p75NTR translocation were required for Gb3-induced pain. These results suggest that acute exposure to Gb3 induces mechanical allodynia via activation of the proNGF-p75NTR pathway, which involves lipid rafts and PKA. Our findings provide new pathological insights into FD-associated pain, and suggest the need to develop therapeutic interventions targeting proNGF-p75NTR signaling.
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Affiliation(s)
- Junya Sugimoto
- Department of Scientific Research, Fujimoto Pharmaceutical Corporation, 1-3-40 Nishiotsuka, Matsubara, Osaka, 580-8503, Japan
| | - Hiroshi Satoyoshi
- Department of Scientific Research, Fujimoto Pharmaceutical Corporation, 1-3-40 Nishiotsuka, Matsubara, Osaka, 580-8503, Japan
| | - Kazue Takahata
- Department of Scientific Research, Fujimoto Pharmaceutical Corporation, 1-3-40 Nishiotsuka, Matsubara, Osaka, 580-8503, Japan.
| | - Shizuko Muraoka
- Department of Scientific Research, Fujimoto Pharmaceutical Corporation, 1-3-40 Nishiotsuka, Matsubara, Osaka, 580-8503, Japan
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19
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Brandel A, Aigal S, Lagies S, Schlimpert M, Meléndez AV, Xu M, Lehmann A, Hummel D, Fisch D, Madl J, Eierhoff T, Kammerer B, Römer W. The Gb3-enriched CD59/flotillin plasma membrane domain regulates host cell invasion by Pseudomonas aeruginosa. Cell Mol Life Sci 2021; 78:3637-3656. [PMID: 33555391 PMCID: PMC8038999 DOI: 10.1007/s00018-021-03766-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 12/22/2020] [Accepted: 01/15/2021] [Indexed: 12/11/2022]
Abstract
The opportunistic pathogen Pseudomonas aeruginosa has gained precedence over the years due to its ability to develop resistance to existing antibiotics, thereby necessitating alternative strategies to understand and combat the bacterium. Our previous work identified the interaction between the bacterial lectin LecA and its host cell glycosphingolipid receptor globotriaosylceramide (Gb3) as a crucial step for the engulfment of P. aeruginosa via the lipid zipper mechanism. In this study, we define the LecA-associated host cell membrane domain by pull-down and mass spectrometry analysis. We unraveled a predilection of LecA for binding to saturated, long fatty acyl chain-containing Gb3 species in the extracellular membrane leaflet and an induction of dynamic phosphatidylinositol (3,4,5)-trisphosphate (PIP3) clusters at the intracellular leaflet co-localizing with sites of LecA binding. We found flotillins and the GPI-anchored protein CD59 not only to be an integral part of the LecA-interacting membrane domain, but also majorly influencing bacterial invasion as depletion of either of these host cell proteins resulted in about 50% reduced invasiveness of the P. aeruginosa strain PAO1. In summary, we report that the LecA-Gb3 interaction at the extracellular leaflet induces the formation of a plasma membrane domain enriched in saturated Gb3 species, CD59, PIP3 and flotillin thereby facilitating efficient uptake of PAO1.
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Affiliation(s)
- Annette Brandel
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- CIBSS, Centre for Integrative Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
| | - Sahaja Aigal
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Simon Lagies
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- Center for Biological Systems Analysis, University of Freiburg, Habsburgerstraße 49, 79104, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine, University of Freiburg, Albertstraße 19a, 79104, Freiburg, Germany
| | - Manuel Schlimpert
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- Center for Biological Systems Analysis, University of Freiburg, Habsburgerstraße 49, 79104, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine, University of Freiburg, Albertstraße 19a, 79104, Freiburg, Germany
| | - Ana Valeria Meléndez
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- CIBSS, Centre for Integrative Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine, University of Freiburg, Albertstraße 19a, 79104, Freiburg, Germany
| | - Maokai Xu
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- CIBSS, Centre for Integrative Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
| | - Anika Lehmann
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- CIBSS, Centre for Integrative Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
| | - Daniel Hummel
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- Department of Biochemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211, Geneva, Switzerland
| | - Daniel Fisch
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- Host-Toxoplasma Interaction Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK
- Department of Infectious Disease, MRC Centre for Molecular Bacteriology and Infection, Imperial College London, London, SW7 2AZ, UK
| | - Josef Madl
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg - Bad Krozingen, and Faculty of Medicine, University of Freiburg, Elsässer Straße 2q, 79110, Freiburg, Germany
| | - Thorsten Eierhoff
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- Clinic for Vascular and Endovascular Surgery, University Hospital Münster, Albert Schweitzer Campus 1, 48149, Münster, Germany
| | - Bernd Kammerer
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany
- Center for Biological Systems Analysis, University of Freiburg, Habsburgerstraße 49, 79104, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine, University of Freiburg, Albertstraße 19a, 79104, Freiburg, Germany
| | - Winfried Römer
- Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104, Freiburg, Germany.
- BIOSS, Centre for Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany.
- CIBSS, Centre for Integrative Biological Signalling Studies, University of Freiburg, Schänzlestraße 18, 79104, Freiburg, Germany.
- Spemann Graduate School of Biology and Medicine, University of Freiburg, Albertstraße 19a, 79104, Freiburg, Germany.
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20
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Abstract
Changes in glycosylation on proteins or lipids are one of the hallmarks of tumorigenesis. In many cases, it is still not understood how glycan information is translated into biological function. In this review, we discuss at the example of specific cancer-related glycoproteins how their endocytic uptake into eukaryotic cells is tuned by carbohydrate modifications. For this, we not only focus on overall uptake rates, but also illustrate how different uptake processes-dependent or not on the conventional clathrin machinery-are used under given glycosylation conditions. Furthermore, we discuss the role of certain sugar-binding proteins, termed galectins, to tune glycoprotein uptake by inducing their crosslinking into lattices, or by co-clustering them with glycolipids into raft-type membrane nanodomains from which the so-called clathrin-independent carriers (CLICs) are formed for glycoprotein internalization into cells. The latter process has been termed glycolipid-lectin (GL-Lect) hypothesis, which operates in a complementary manner to the clathrin pathway and galectin lattices.
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Affiliation(s)
- Ludger Johannes
- Cellular and Chemical Biology Unit, INSERM U1143, CNRS UMR3666, Institut Curie, PSL Research University, 26 rue d'Ulm, 75248, Paris Cedex 05, France.
| | - Anne Billet
- Cellular and Chemical Biology Unit, INSERM U1143, CNRS UMR3666, Institut Curie, PSL Research University, 26 rue d'Ulm, 75248, Paris Cedex 05, France.,Université de Paris, F-75005, Paris, France
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21
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Barrientos RC, Zhang Q. Recent advances in the mass spectrometric analysis of glycosphingolipidome - A review. Anal Chim Acta 2020; 1132:134-155. [PMID: 32980104 PMCID: PMC7525043 DOI: 10.1016/j.aca.2020.05.051] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 05/17/2020] [Accepted: 05/21/2020] [Indexed: 12/30/2022]
Abstract
Aberrant expression of glycosphingolipids has been implicated in a myriad of diseases, but our understanding of the strucural diversity, spatial distribution, and biological function of this class of biomolecules remains limited. These challenges partly stem from a lack of sensitive tools that can detect, identify, and quantify glycosphingolipids at the molecular level. Mass spectrometry has emerged as a powerful tool poised to address most of these challenges. Here, we review the recent developments in analytical glycosphingolipidomics with an emphasis on sample preparation, mass spectrometry and tandem mass spectrometry-based structural characterization, label-free and labeling-based quantification. We also discuss the nomenclature of glycosphingolipids, and emerging technologies like ion mobility spectrometry in differentiation of glycosphingolipid isomers. The intrinsic advantages and shortcomings of each method are carefully critiqued in line with an individual's research goals. Finally, future perspectives on analytical sphingolipidomics are stated, including a need for novel and more sensive methods in isomer separation, low abundance species detection, and profiling the spatial distribution of glycosphingolipid molecular species in cells and tissues using imaging mass spectrometry.
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Affiliation(s)
- Rodell C Barrientos
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, NC, 27412, United States; UNCG Center for Translational Biomedical Research, NC Research Campus, Kannapolis, NC, 28081, United States
| | - Qibin Zhang
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, NC, 27412, United States; UNCG Center for Translational Biomedical Research, NC Research Campus, Kannapolis, NC, 28081, United States.
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22
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Honda T, Motoyoshi K, Kasahara J, Yamagata K, Takahashi H, Nakamura H, Murayama T. Tyrosine-phosphorylation and activation of glucosylceramide synthase by v-Src: Its role in survival of HeLa cells against ceramide. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1866:158817. [PMID: 32980536 DOI: 10.1016/j.bbalip.2020.158817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/15/2020] [Accepted: 09/18/2020] [Indexed: 10/23/2022]
Abstract
Sphingolipids represent a family of cellular lipid-molecules that regulate physiological and pathophysiological processes. Glucosylceramide (GlcCer), the simplest glycosphingolipid (GSL), is synthesized from ceramide and UDP-glucose by GlcCer synthase (GCS). Both GlcCer (and resulting GSLs) and ceramide regulate various cellular functions including cell death and multiple drug resistance. Src family tyrosine kinases are up-regulated in various human cancer cells. We examined the effect of v-Src expression on GCS activity, the formation of 4-nitrobenzo-2-oxa-1,3-diazole (NBD)-labeled GlcCer from NBD-ceramide, and the effect of tyrosine132 mutation in GCS on ceramide-induced cytotoxicity in HeLa cells. Expression of v-Src increased the formation of NBD-GlcCer in both intact cells without marked changes in other sphingolipid metabolites and cell homogenates without changing affinities of NBD-ceramide and UDP-glucose. Expression of v-Src also increased tyrosine-phosphorylated levels in GCS proteins in HeLa and HEK293T cells. In HEK293T cells transiently expressing the GCS mutant, GCS-Y132F-HA, showing replacement of the tyrosine132 residue with phenylalanine, tyrosine-phosphorylated levels in GCS proteins were significantly lower than those in control cells expressing the GCS-wild-type-HA. The formation of NBD-GlcCer in HeLa cells stably expressing GCS-Y132F-HA was significantly lower than that in the control. Ceramide-induced cytotoxicity in HeLa-GCS-Y132F-HA cells was significantly greater than in the control. In this study, we showed for the first time that expression of v-Src up-regulated GCS activity via tyrosine phosphorylation of the enzyme in a post-translational manner. Mechanisms of Src-induced resistance to ceramide-induced cytotoxicity are discussed in relation to the Src-induced up-regulation of GCS activity.
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Affiliation(s)
- Takuya Honda
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan.
| | - Kaisei Motoyoshi
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Junya Kasahara
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Kazuyuki Yamagata
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan; Laboratory of International Scholars in Pharmaceuticals/Systems Biology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Hiromasa Takahashi
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Hiroyuki Nakamura
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
| | - Toshihiko Murayama
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba 260-8675, Japan
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23
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Abstract
The use of in silico strategies to develop the structural basis for a rational optimization of glycan-protein interactions remains a great challenge. This problem derives, in part, from the lack of technologies to quantitatively and qualitatively assess the complex assembling between a glycan and the targeted protein molecule. Since there is an unmet need for developing new sugar-targeted therapeutics, many investigators are searching for technology platforms to elucidate various types of molecular interactions within glycan-protein complexes and aid in the development of glycan-targeted therapies. Here we discuss three important technology platforms commonly used in the assessment of the complex assembly of glycosylated biomolecules, such as glycoproteins or glycosphingolipids: Biacore analysis, molecular docking, and molecular dynamics simulations. We will also discuss the structural investigation of glycosylated biomolecules, including conformational changes of glycans and their impact on molecular interactions within the glycan-protein complex. For glycoproteins, secreted protein acidic and rich in cysteine (SPARC), which is associated with various lung disorders, such as chronic obstructive pulmonary disease (COPD) and lung cancer, will be taken as an example showing that the core fucosylation of N-glycan in SPARC regulates protein-binding affinity with extracellular matrix collagen. For glycosphingolipids (GSLs), Globo H ceramide, an important tumor-associated GSL which is being actively investigated as a target for new cancer immunotherapies, will be used to demonstrate how glycan structure plays a significant role in enhancing angiogenesis in tumor microenvironments.
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Affiliation(s)
- Sheng-Hung Wang
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, and Chang Gung University, Taoyuan, 333, Taiwan
| | - Tsai-Jung Wu
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, and Chang Gung University, Taoyuan, 333, Taiwan
| | - Chien-Wei Lee
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, and Chang Gung University, Taoyuan, 333, Taiwan
| | - John Yu
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, and Chang Gung University, Taoyuan, 333, Taiwan. .,Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan.
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Hongo K, Harada T, Fukuro E, Kobayashi M, Ohashi T, Eto Y. Massive accumulation of globotriaosylceramide in various tissues from a Fabry patient with a high antibody titer against alpha-galactosidase A after 6 years of enzyme replacement therapy. Mol Genet Metab Rep 2020; 24:100623. [PMID: 32714835 PMCID: PMC7371906 DOI: 10.1016/j.ymgmr.2020.100623] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/25/2020] [Accepted: 06/26/2020] [Indexed: 11/16/2022] Open
Abstract
Fabry disease is an X-linked metabolic disorder due to a pathogenic mutation of the GLA gene. The accumulation of globotriaosylceramide (Gb3) damages multiple organs, including the heart, kidney and nervous system, especially in classical type Fabry disease. Enzyme replacement therapy (ERT) using recombinant alpha-galactosidase A has been shown to remove Gb3 from organs and to improve the prognosis of Fabry disease. We herein report the case of a 67-year-old classical type Fabry patient who had been treated with ERT for 6 years and who continuously showed a high antibody titer against recombinant alpha-galactosidase A during therapy. A post-mortem examination was performed after sudden death. A histological examination revealed the massive accumulation of Gb3 in various organs, even after long term ERT. In addition to the typical pathological findings as reported in tissue biopsy samples, the serious accumulation of Gb3 in the cardiac conduction system and the endocrine system was detected. Since the start of ERT for this patient might be too late to improve organ damage and prognosis, ERT should be started before the appearance of major organ involvement for the effective elimination of Gb3 and changes in the therapeutic strategy might be considered if the patient shows a high antibody titer against recombinant alpha-galactosidase A.
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Affiliation(s)
- Kenichi Hongo
- Division of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8, Nishi-shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Toru Harada
- Department of Pathology, The Jikei University School of Medicine, 3-25-8, Nishi-shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Eiko Fukuro
- Division of Cardiology, Department of Internal Medicine, The Jikei University School of Medicine, 3-25-8, Nishi-shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Masahisa Kobayashi
- Department of Pediatrics, The Jikei University School of Medicine, 3-25-8, Nishi-shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Toya Ohashi
- Department of Pediatrics, The Jikei University School of Medicine, 3-25-8, Nishi-shimbashi, Minato-ku, Tokyo 105-8461, Japan.,Division of Gene Therapy, Research Center for Molecular Sciences, The Jikei University School of Medicine, 3-25-8, Nishi-shimbashi, Minato-ku, Tokyo 105-8461, Japan
| | - Yoshikatsu Eto
- Advanced Clinical Research Center, Institute of Neurological Disorders, 255, Furusawa-Miyako, Kawasaki Asao-ku, Kanagawa 215-0026, Japan
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25
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Fujiwara Y, Hama K, Yokoyama K. Mass spectrometry in combination with a chiral column and multichannel-MRM allows comprehensive analysis of glycosphingolipid molecular species from mouse brain. Carbohydr Res 2020; 490:107959. [PMID: 32120021 DOI: 10.1016/j.carres.2020.107959] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 01/31/2020] [Accepted: 02/18/2020] [Indexed: 11/18/2022]
Abstract
Glycosphingolipids (GSLs) exist exclusively in the outer leaflet of plasma membrane in mammalian cells and have diverse structures including different classes of sugars and various molecular species of ceramide moieties. Establishing methods that measure each molecular species in GSL classes should aid functional characterization of GSLs and reveal details about the mechanism of pathogenesis in glycosphingolipidoses. Using an IF-3 chiral column that has never been used for lipid analyses, we developed a liquid chromatography-mass spectrometry (LC-MS) method to separate various GSLs based on sugar and ceramide moieties. To examine GSLs in detail a multichannel-multiple reaction monitoring (multichannel-MRM) mode was used and covered a range of 500-2000 Da. Common fragment ions detected with higher collision energy in the positive ion mode were m/z 264 and 292, and are derived from d18:1 and d20:1 ions, respectively. Both species were used as product ions in the multichannel-MRM for the simultaneous measurement of neutral GSLs, gangliosides and sulfatides. Comprehensive analysis of GSLs in mouse brain using this method revealed that for gangliosides and LacCer, d18:1-C18:0 and d20:1-C18:0 were the major molecular species, whereas d18:1-C24:0 and d18:1-C24:1 were the major molecular species of sulfatides. The results revealed a diverse GSL fatty acid profile. In conclusion, by combining IF-3 chiral column and the multichannel-MRM method various molecular species of GSLs were detected successfully, and a metabolomics approach based on this LC-MS method should facilitate functional analysis of GSLs and the discovery of early biomarkers of glycosphingolipidoses at the molecular level.
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Affiliation(s)
- Yuko Fujiwara
- Faculty of Pharma-Science, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8605, Japan.
| | - Kotaro Hama
- Faculty of Pharma-Science, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
| | - Kazuaki Yokoyama
- Faculty of Pharma-Science, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, 173-8605, Japan
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Abstract
Shiga toxin (Stx) is a major virulence factor of enterohemorrhagic Escherichia coli (E. coli). Stx consists of one enzymatic A subunit and five B subunits (StxB) that are involved in binding. The StxB pentamer specifically recognizes a glycosphingolipid, globotriaosylceramide (Gb3), as a receptor; therefore, it can be used as a probe to detect Gb3. This chapter describes the preparation of recombinant Stx1B proteins using E. coli, their conjugation with fluorescent dyes, and their application for flow cytometry. The prepared fluorescent StxB proteins bound to cells of several lines, including the HeLa human cervix adenocarcinoma cell line and the THP-1 human monocytic leukemia cell line. Furthermore, the probe was useful for confirmation of several sphingolipid-deficient HeLa cell lines that were constructed using genome editing.
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27
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Arrant AE, Roth JR, Boyle NR, Kashyap SN, Hoffmann MQ, Murchison CF, Ramos EM, Nana AL, Spina S, Grinberg LT, Miller BL, Seeley WW, Roberson ED. Impaired β-glucocerebrosidase activity and processing in frontotemporal dementia due to progranulin mutations. Acta Neuropathol Commun 2019; 7:218. [PMID: 31870439 PMCID: PMC6929503 DOI: 10.1186/s40478-019-0872-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 12/17/2019] [Indexed: 01/29/2023] Open
Abstract
Loss-of-function mutations in progranulin (GRN) are a major autosomal dominant cause of frontotemporal dementia. Most pathogenic GRN mutations result in progranulin haploinsufficiency, which is thought to cause frontotemporal dementia in GRN mutation carriers. Progranulin haploinsufficiency may drive frontotemporal dementia pathogenesis by disrupting lysosomal function, as patients with GRN mutations on both alleles develop the lysosomal storage disorder neuronal ceroid lipofuscinosis, and frontotemporal dementia patients with GRN mutations (FTD-GRN) also accumulate lipofuscin. The specific lysosomal deficits caused by progranulin insufficiency remain unclear, but emerging data indicate that progranulin insufficiency may impair lysosomal sphingolipid-metabolizing enzymes. We investigated the effects of progranulin insufficiency on sphingolipid-metabolizing enzymes in the inferior frontal gyrus of FTD-GRN patients using fluorogenic activity assays, biochemical profiling of enzyme levels and posttranslational modifications, and quantitative neuropathology. Of the enzymes studied, only β-glucocerebrosidase exhibited impairment in FTD-GRN patients. Brains from FTD-GRN patients had lower activity than controls, which was associated with lower levels of mature β-glucocerebrosidase protein and accumulation of insoluble, incompletely glycosylated β-glucocerebrosidase. Immunostaining revealed loss of neuronal β-glucocerebrosidase in FTD-GRN patients. To investigate the effects of progranulin insufficiency on β-glucocerebrosidase outside of the context of neurodegeneration, we investigated β-glucocerebrosidase activity in progranulin-insufficient mice. Brains from Grn-/- mice had lower β-glucocerebrosidase activity than wild-type littermates, which was corrected by AAV-progranulin gene therapy. These data show that progranulin insufficiency impairs β-glucocerebrosidase activity in the brain. This effect is strongest in neurons and may be caused by impaired β-glucocerebrosidase processing.
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Affiliation(s)
- Andrew E Arrant
- Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Alzheimer's Disease Center, Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham, Birmingham, AL, USA.
- , 1825 University Blvd., SHEL 1106, Birmingham, AL, 35294, USA.
| | - Jonathan R Roth
- Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Alzheimer's Disease Center, Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Nicholas R Boyle
- Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Alzheimer's Disease Center, Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Shreya N Kashyap
- Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Alzheimer's Disease Center, Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Madelyn Q Hoffmann
- Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Alzheimer's Disease Center, Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Charles F Murchison
- Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Alzheimer's Disease Center, Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham, Birmingham, AL, USA
- Department of Biostatistics, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Eliana Marisa Ramos
- Department of Psychiatry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Alissa L Nana
- Department of Neurology, Memory & Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Salvatore Spina
- Department of Neurology, Memory & Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Lea T Grinberg
- Department of Neurology, Memory & Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
- Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
| | - Bruce L Miller
- Department of Neurology, Memory & Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - William W Seeley
- Department of Neurology, Memory & Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
- Department of Pathology, University of California, San Francisco, San Francisco, CA, USA
| | - Erik D Roberson
- Departments of Neurology and Neurobiology, Center for Neurodegeneration and Experimental Therapeutics, Alzheimer's Disease Center, Evelyn F. McKnight Brain Institute, University of Alabama at Birmingham, Birmingham, AL, USA.
- , 1825 University Blvd., SHEL 1110, Birmingham, AL, 35294, USA.
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28
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Huebecker M, Moloney EB, van der Spoel AC, Priestman DA, Isacson O, Hallett PJ, Platt FM. Reduced sphingolipid hydrolase activities, substrate accumulation and ganglioside decline in Parkinson's disease. Mol Neurodegener 2019; 14:40. [PMID: 31703585 PMCID: PMC6842240 DOI: 10.1186/s13024-019-0339-z] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [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: 05/03/2019] [Accepted: 09/20/2019] [Indexed: 12/20/2022] Open
Abstract
Background Haploinsufficiency in the Gaucher disease GBA gene, which encodes the lysosomal glucocerebrosidase GBA, and ageing represent major risk factors for developing Parkinson’s disease (PD). Recently, more than fifty other lysosomal storage disorder gene variants have been identified in PD, implicating lysosomal dysfunction more broadly as a key risk factor for PD. Despite the evidence of multiple lysosomal genetic risks, it remains unclear how sphingolipid hydrolase activities, other than GBA, are altered with ageing or in PD. Moreover, it is not fully known if levels of glycosphingolipid substrates for these enzymes change in vulnerable brain regions of PD. Finally, little is known about the levels of complex gangliosides in substantia nigra which may play a significant role in ageing and PD. Methods To study sphingolipid hydrolase activities and glycosphingolipid expression in ageing and in PD, two independent cohorts of human substantia nigra tissues were obtained. Fluorescent 4-methylumbelliferone assays were used to determine multiple enzyme activities. The lysosomal GBA and non-lysosomal GBA2 activities were distinguished using the inhibitor NB-DGJ. Sensitive and quantitative normal-phase HPLC was performed to study glycosphingolipid levels. In addition, glycosphingolipid levels in cerebrospinal fluid and serum were analysed as possible biomarkers for PD. Results The present study demonstrates, in two independent cohorts of human post-mortem substantia nigra, that sporadic PD is associated with deficiencies in multiple lysosomal hydrolases (e.g. α-galactosidase and β-hexosaminidase), in addition to reduced GBA and GBA2 activities and concomitant glycosphingolipid substrate accumulation. Furthermore, the data show significant reductions in levels of complex gangliosides (e.g. GM1a) in substantia nigra, CSF and serum in ageing, PD, and REM sleep behaviour disorder, which is a strong predictor of PD. Conclusions These findings conclusively demonstrate reductions in GBA activity in the parkinsonian midbrain, and for the first time, reductions in the activity of several other sphingolipid hydrolases. Furthermore, significant reductions were seen in complex gangliosides in PD and ageing. The diminished activities of these lysosomal hydrolases, the glycosphingolipid substrate accumulation, and the reduced levels of complex gangliosides are likely major contributors to the primary development of the pathology seen in PD and related disorders with age.
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Affiliation(s)
- Mylene Huebecker
- Department of Pharmacology, University of Oxford, Oxford, OX1 3QT, UK
| | - Elizabeth B Moloney
- Neuroregeneration Institute, McLean Hospital / Harvard Medical School, Belmont, MA, 02478, USA
| | - Aarnoud C van der Spoel
- Departments of Pediatrics and Biochemistry & Molecular Biology, Atlantic Research Centre, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - David A Priestman
- Department of Pharmacology, University of Oxford, Oxford, OX1 3QT, UK
| | - Ole Isacson
- Neuroregeneration Institute, McLean Hospital / Harvard Medical School, Belmont, MA, 02478, USA.
| | - Penelope J Hallett
- Neuroregeneration Institute, McLean Hospital / Harvard Medical School, Belmont, MA, 02478, USA.
| | - Frances M Platt
- Department of Pharmacology, University of Oxford, Oxford, OX1 3QT, UK.
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29
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Okuda T. Data set for characterization of the glycosylation status of hepatic glycoproteins in mice fed a low-carbohydrate ketogenic diet. Data Brief 2019; 27:104604. [PMID: 31687435 PMCID: PMC6820080 DOI: 10.1016/j.dib.2019.104604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 05/23/2019] [Revised: 09/10/2019] [Accepted: 09/26/2019] [Indexed: 11/29/2022] Open
Abstract
The data presented herein pertain to a research article entitled “A low-carbohydrate ketogenic diet promotes ganglioside synthesis via the transcriptional regulation of ganglioside metabolism-related genes” [1]. The present article provides additional structural analysis data for the characterization of hepatic glycoproteins in mice fed a low-carbohydrate ketogenic diet (LCKD). Analysis of hepatic glycoproteins by enzyme-linked assay using the lectins UEA-I, ConA, LCA, and WGA showed that the LCKD decreased mature forms of complex-type glycans but increased immature forms of glycans on glycoproteins. An enzyme-linked immunosorbent assay using an anti–α2,6-sialyl LacNAc antibody also supported this result, indicating that dietary carbohydrate restriction results in aberrant glycosylation of tissue glycoproteins. These structural alterations of hepatic glycoproteins were not correlated with the expression levels of glycosyltransferase genes but were correlated with down-regulated expression of the Gale gene, which encodes a rate-limiting enzyme for the synthesis of sugar nucleotide donors for protein glycosylation in the liver. This property differed from glycosphingolipid metabolism in the liver of LCKD-fed mice.
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Affiliation(s)
- Tetsuya Okuda
- Bio-Design Research Group, Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan
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Aoki K, Heaps AD, Strauss KA, Tiemeyer M. Mass spectrometric quantification of plasma glycosphingolipids in human GM3 ganglioside deficiency. Clin Mass Spectrom 2019; 14 Pt B:106-114. [PMID: 34917767 DOI: 10.1016/j.clinms.2019.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/28/2019] [Accepted: 03/12/2019] [Indexed: 01/01/2023]
Abstract
Background Among Amish communities of North America, biallelic mutations of ST3GAL5 (c.694C > T) eliminate synthesis of GM3 and its derivative downstream a- and b-series gangliosides. Systemic ganglioside deficiency is associated with infantile onset psychomotor retardation, slow brain growth, intractable epilepsy, deafness, and cortical visual impairment. We developed a robust quantitative assay to simultaneously characterize glycan and ceramide moieties of plasma glycosphingolipids (GSLs) among ST3GAL5 c.694C > T homozygotes (n = 8), their heterozygous siblings (n = 24), and wild type control (n = 19) individuals. Methods Following extraction and saponification of total plasma lipids, GSLs were purified on a tC18 cartridge column, permethylated, and subjected to nanospray ionization mass spectrometry utilizing neutral loss scanning and data-dependent acquisition. Plasma GSLs were quantified against appropriate synthetic standards. Results Our method demonstrated linearity from 5 to 250 μl of plasma. Recovery of synthetic GSLs spiked into plasma was 99-104% with no matrix interference. Quantitative plasma GSL profiles discriminated among ST3GAL5 genotypes: GM3 and GD3 were undetectable in ST3GAL5 c.694C > T homozygotes, who had markedly elevated lactosylceramide (19.17 ± 4.20 nmol/ml) relative to heterozygous siblings (9.62 ± 2.46 nmol/ml) and wild type controls (6.55 ± 2.16 nmol/ml). Children with systemic ganglioside deficiency had a distinctive shift in ceramide composition toward higher mass species. Conclusions Our quantitative glycolipidomics method discriminates among ST3GAL5 c.694C > T genotypes, can reveal subtle structural heterogeneity, and represents a useful new strategy to diagnose and monitor GSL disorders in humans.
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Key Words
- CID, collision-induced dissociation
- Cer, ceramide
- Dp, degree of polymerization
- EGCase, endoglycosylceramidase
- ESI-MS, electrospray ionization mass spectrometry
- GD3, disialo-ganglioside GD3 (IUPAC-IUB: II3- α -(Neu5Ac)2-Gg2Cer)
- GM1b, monosialo-ganglioside GM1b (IUPAC-IUB: IV3-α-Neu5Ac-Gg4Cer)
- GM3
- GM3, monosialo-ganglioside GM3
- GSL, glycosphingolipid
- Gal, galactose
- GalNAc, N-acetylgalactosamine
- Ganglioside
- Gb3, globotriaosylceramide (IUPAC-IUB: Gb3Cer)
- Gb3-D, deuterated Gb3
- Gb4, globotetraosylceramide (IUPAC-IUB: Gb4Cer)
- Glc, glucose
- GlcCer, glucosylceramide
- Glycosphingolipid
- LacCer, lactosylceramide
- MS, mass spectrometry
- MSn, multidimensional mass spectrometry
- Mass spectrometry
- NL, neutral loss
- NSI, nanospray ionization
- Neu5Ac, sialic acid as N-5-acetylneuraminic acid
- Plasma
- ST3GAL5, CMP-Neu5Ac:Lactosylceramide alpha-2,3-sialyltransferase 5, previously known as SIAT9, SIATGM3S, ST3GalV, GM3-synthase
- TIM, total ion mapping
- UPLC, ultra-high pressure liquid chromatography
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Affiliation(s)
- Kazuhiro Aoki
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, Greece
| | - Adam D Heaps
- Clinic for Special Children, Strasburg, PA, United States
| | - Kevin A Strauss
- Clinic for Special Children, Strasburg, PA, United States.,Lancaster General Hospital, Lancaster, PA, United States
| | - Michael Tiemeyer
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, Greece.,Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, Greece
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31
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Kenoth R, Brown RE, Kamlekar RK. In Vitro Measurement of Sphingolipid Intermembrane Transport Illustrated by GLTP Superfamily Members. Methods Mol Biol 2019; 1949:237-56. [PMID: 30790260 DOI: 10.1007/978-1-4939-9136-5_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Herein, we describe methodological approaches for measuring in vitro transfer of sphingolipids (SLs) between membranes. The approaches rely on direct tracking of the lipid. Typically, direct tracking involves lipid labeling via attachment of fluorophores or introduction of radioactivity. Members of the GlycoLipid Transfer Protein (GLTP) superfamily are used to illustrate two broadly applicable methods for direct lipid tracking. One method relies on Förster resonance energy transfer (FRET) that enables continuous assessment of fluorophore-labeled SL transfer in real time between lipid donor and acceptor vesicles. The second method relies on tracking of radiolabeled SL transfer by separation of lipid donor and acceptor vesicles at discrete time points. The assays are readily adjustable for assessing lipid transfer (1) between various model membrane assemblies (vesicles, micelles, bicelles, nanodiscs), (2) involving other lipid types by other lipid transfer proteins, (3) with protein preparations that are either crudely or highly purified, and (4) that is spontaneous and occurs in the absence of protein.
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32
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Jiang YY, Zheng SJ. Progress in research of sphingolipids in hepatocellular carcinoma. Shijie Huaren Xiaohua Zazhi 2018; 26:2109-2114. [DOI: 10.11569/wcjd.v26.i36.2109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Sphingolipids are a class of novel lipid bioregulatory molecules that play important roles in regulating cell growth, differentiation, proliferation, and apoptosis. Sphingolipid metabolism disorders could induce the development of various diseases including hepatocellular carcinoma (HCC). With the development of lipidomics, it has been demonstrated that sphingolipids play an increasingly essential role in the occurrence, development, and outcome of HCC. Studies have shown that sphingolipids can be used as a new biomarker for the diagnosis of HCC, and regulation of the sphingolipid metabolism pathway may be a potential target for the treatment of HCC. This paper reviews the current progress in research of sphingolipids with regard to their classification, metabolic pathways, role in the development of HCC, and the possibility as a target for diagnosis and treatment of HCC.
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Affiliation(s)
- Ying-Ying Jiang
- Complicated Liver Disease and Artificial Liver Center, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
| | - Su-Jun Zheng
- Complicated Liver Disease and Artificial Liver Center, Beijing You'an Hospital, Capital Medical University, Beijing 100069, China
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33
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Abstract
Glycosphingolipids (GSLs) are ubiquitous components of eukaryotic plasma membranes that consist of a ceramide backbone linked to a glycan moiety. Both the ceramide and the glycan parts of GSLs display structural variations that result in a remarkable repertoire of diverse compounds. This diversity of GSLs is exploited during embryogenesis, when different GSLs are produced at specific developmental stages and along several differentiation trajectories. Importantly, plasma membrane receptors interact with GSLs to modify their activities. Consequently, two otherwise identical cells can respond differently to the same stimulus owing to their different GSL composition. The metabolic reprograming of GSLs is in fact a necessary part of developmental programs, as its impairment results in developmental failure or tissue-specific defects. Moreover, single-cell variability is emerging as a fundamental player in development: GSL composition displays cell-to-cell variability in syngeneic cell populations owing to the regulatory gene expression circuits involved in microenvironment adaptation and in differentiation. Here, we discuss how GSLs are synthesized and classified and review the role of GSLs in the establishment and maintenance of cell identity. We further highlight the existence of the regulatory circuits that modify GSL pathways and speculate how GSL heterogeneity might contribute to developmental patterning.
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Affiliation(s)
- Domenico Russo
- Institute of Protein Biochemistry, National Research Council, Via P. Castellino 111, Napoli, Italy
| | - Laura Capolupo
- Institute of Protein Biochemistry, National Research Council, Via P. Castellino 111, Napoli, Italy.,Institute of Bioengineering, Laboratory of Lipid Cell Biology, École polytechnique fédérale de Lausanne (EPFL) CH-1015 Lausanne, Switzerland
| | - Jaipreet Singh Loomba
- Institute of Protein Biochemistry, National Research Council, Via P. Castellino 111, Napoli, Italy.,Institute of Bioengineering, Laboratory of Lipid Cell Biology, École polytechnique fédérale de Lausanne (EPFL) CH-1015 Lausanne, Switzerland
| | - Lucia Sticco
- Institute of Protein Biochemistry, National Research Council, Via P. Castellino 111, Napoli, Italy
| | - Giovanni D'Angelo
- Institute of Protein Biochemistry, National Research Council, Via P. Castellino 111, Napoli, Italy .,Institute of Bioengineering, Laboratory of Lipid Cell Biology, École polytechnique fédérale de Lausanne (EPFL) CH-1015 Lausanne, Switzerland
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Dupre TV, Siskind LJ. The role of sphingolipids in acute kidney injury. Adv Biol Regul 2018; 70:31-9. [PMID: 30455062 DOI: 10.1016/j.jbior.2018.11.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/12/2018] [Accepted: 11/12/2018] [Indexed: 12/20/2022]
Abstract
Acute kidney injury (AKI) is most simply defined as the rapid loss of kidney function in a matter of hours to days. AKI can manifest in a number of ways including pre-renal, post-renal, or intrinsic AKI. During acute kidney injury, multiple pathogenic processes are activated including inflammation, cell death, and the generation of reactive oxygen species, just to name a few. Sphingolipids are known to play a role in a number of the pathogenic pathways involved in the pathogenesis of many types of AKI, which suggests a role for sphingolipids in AKI. This short review will discuss the evidence for a role for sphingolipids in AKI.
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Huang Y, Huang S, Di Scala C, Wang Q, Wandall HH, Fantini J, Zhang YQ. The glycosphingolipid MacCer promotes synaptic bouton formation in Drosophila by interacting with Wnt. eLife 2018; 7:38183. [PMID: 30355446 PMCID: PMC6202054 DOI: 10.7554/elife.38183] [Citation(s) in RCA: 14] [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: 05/10/2018] [Accepted: 09/09/2018] [Indexed: 01/05/2023] Open
Abstract
Lipids are structural components of cellular membranes and signaling molecules that are widely involved in development and diseases, but the underlying molecular mechanisms are poorly understood, partly because of the vast variety of lipid species and complexity of synthetic and turnover pathways. From a genetic screen, we identify that mannosyl glucosylceramide (MacCer), a species of glycosphingolipid (GSL), promotes synaptic bouton formation at the Drosophila neuromuscular junction (NMJ). Pharmacological and genetic analysis shows that the NMJ growth-promoting effect of MacCer depends on normal lipid rafts, which are known to be composed of sphingolipids, sterols and select proteins. MacCer positively regulates the synaptic level of Wnt1/Wingless (Wg) and facilitates presynaptic Wg signaling, whose activity is raft-dependent. Furthermore, a functional GSL-binding motif in Wg exhibiting a high affinity for MacCer is required for normal NMJ growth. These findings reveal a novel mechanism whereby the GSL MacCer promotes synaptic bouton formation via Wg signaling.
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Affiliation(s)
- Yan Huang
- Key Laboratory for Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, CAS Center for Excellence in Brain Science and Intelligence Technology, Beijing, China
| | - Sheng Huang
- Key Laboratory for Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, CAS Center for Excellence in Brain Science and Intelligence Technology, Beijing, China.,Sino-Danish College, Sino-Danish Center for Education and Research, Chinese Academy of Sciences, Beijing, China
| | | | - Qifu Wang
- Key Laboratory for Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, CAS Center for Excellence in Brain Science and Intelligence Technology, Beijing, China
| | - Hans H Wandall
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jacques Fantini
- UNIS UMR_S 1072, INSERM, Aix-Marseille Université, Marseille, France
| | - Yong Q Zhang
- Key Laboratory for Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, CAS Center for Excellence in Brain Science and Intelligence Technology, Beijing, China
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Okuda T, Fukui A. Generation of anti-oligosaccharide antibodies that recognize mammalian glycoproteins by immunization with a novel artificial glycosphingolipid. Biochem Biophys Res Commun 2018; 497:983-9. [PMID: 29458022 DOI: 10.1016/j.bbrc.2018.02.113] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 02/12/2018] [Indexed: 11/20/2022]
Abstract
Here we report a new method for the efficient generation of antibodies that recognize the fine structures of oligosaccharides on glycoproteins. We found a newly designed artificial glycosphingolipid carrying a very long chain fatty acid to be a strong immunogen in mice, with the serum of immunized mice containing antibodies recognizing the oligosaccharide structure of the immunogen. First, we found that conjugation of a simple ceramide analogue to target oligosaccharides could enhance the immunogenicity of these oligosaccharides in these immunized mice. This effect was confirmed in mice immunized with the artificial glycosphingolipids carrying 6'-Sialyl-LacNAc, 3'-Sialyl-LacNAc and LacNAc. Next, we tried to improve the immunogenic enhancing effect of the ceramide analogue. In a model experiment using 6'-Sialyl-LacNAc oligosaccharide, we manipulated the alkyl chains to several lengths, and found that a longer alkyl chain length of the fatty acid correlated with high immunogenicity. Among these we examined, artificial glycosphingolipids conjugated with a ceramide analogue carrying a very long chain fatty acid (lignoceric acid) showed the strongest immunogenicity. By using the artificial glycosphingolipid containing 6'-Sialy-LacNAc and lignoceric acid, we succeeded in the generation of a new anti-6'-Sialyl-LacNAc antibody that recognizes 6'-Sialyl-LacNAc carrying glycoproteins but does not bind to 6'-Sialyllactose, asialo-glycoporoteins and glycoproteins carrying 3'-Sialyl-LacNAc. These results indicate that the established technology is valuable for the targeted generation of monoclonal antibodies against glycoproteins containing specific oligosaccharide structures.
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Abstract
Although individuals are constantly exposed to infectious agents, these agents are generally resisted by the innate and acquired immune systems. Both the innate and acquired immune systems protect against invading organisms, but they differ functionally in several ways. The innate immune system is the body's inborn defense mechanism and the first line of defense against invading organisms, such as bacteria, fungi, and viruses. Glycosphingolipids (GSLs), which are expressed on the outer leaflet of plasma membranes (Murate et al., J Cell Sci 128(8):1627-1638, 2015), are involved in both innate and acquired immunity (Inokuchi et al., Biochim Biophys Acta 1851(1):98-106, 2015; Nakayama et al., Arch Immunol Ther Exp (Warsz) 61(3):217-228, 2013; Rueda, Br J Nutr 98(Suppl 1):S68-73, 2007; Popa and Portoukalian, Pathol Biol (Paris) 51(5):253-255, 2003).Recent studies have indicated that innate immunity is not a "nonspecific" immune system. Large numbers of viruses, bacteria, and bacterial toxins have been reported to bind to host surface carbohydrates, a number of which are components of GSLs (Schengrund, Biochem Pharmacol 65(5):699-707, 2003). Binding studies have also demonstrated that some glycolipids function as receptors for microorganisms and bacterial toxins (Yates and Rampersaud, Ann N Y Acad Sci 845:57-71, 1998). These findings clearly indicate that GSLs are involved in host-pathogen interactions.GSLs are composed of hydrophobic ceramide and hydrophilic sugar moieties (Hakomori, Annu Rev Biochem 50:733-764, 1980). The ceramide moiety of sphingolipids and the cholesterol sterol-ring system are thought to interact via hydrogen bonds and hydrophobic van der Waal's forces (Mukherjee and Maxfield, Annu Rev Cell Dev Biol 20:839-866, 2004). Additional hydrophilic cis interactions among GSL headgroups have been found to promote their lateral associations with surrounding lipid and protein membrane components. These interactions result in the separation in cell membranes of lipid rafts, which are lipid domains rich in GSLs, cholesterol, glycosylphosphatidylinositol (GPI)-anchored proteins and membrane-anchored signaling molecules (Pike, J Lipid Res 47(7):1597-1598, 2006). These GSL-enriched lipid rafts play important roles in immunological functions (Inokuchi et al., Biochim Biophys Acta 1851(1):98-106, 2015; Iwabuchi et al., Mediators Inflamm 2015:120748, 2015; Anderson and Roche, Biochim Biophys Acta 1853(4):775-780, 2015; Zuidscherwoude et al., J Leukoc Biol 95(2):251-263, 2014; Dykstra et al., Annu Rev Immunol 21:457-481, 2003). This introductory chapter describes the roles of GSLs and their lipid rafts in the immune system.
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Affiliation(s)
- Kazuhisa Iwabuchi
- Infection Control Nursing, Graduate School of Health Care and Nursing, Juntendo University, Chiba, Japan.
- Institute for Environmental and Gender Specific Medicine, Graduate school of Medicine, Juntendo University, Chiba, Japan.
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Tan AHM, Sanny A, Ng SW, Ho YS, Basri N, Lee AP, Lam KP. Excessive interferon-α signaling in autoimmunity alters glycosphingolipid processing in B cells. J Autoimmun 2017; 89:53-62. [PMID: 29191573 DOI: 10.1016/j.jaut.2017.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 09/06/2017] [Revised: 11/14/2017] [Accepted: 11/16/2017] [Indexed: 01/01/2023]
Abstract
Excessive interferon-α (IFN-α) production by innate immune cells is a hallmark of autoimmune diseases. What other cell type secretes IFN-α and how IFN-α affects immune cell metabolism and homeostasis in autoimmunity are largely unclear. Here, we report that autoimmune B cells, arising from two different B cell-specific genetic lesions in mice, secrete IFN-α. In addition, IFN-α, found in abundance in autoimmunity, elicited profound changes in the B cell lipidome, increasing their expression of glycosphingolipids (GSLs) and leading to their CD1d-mediated depletion of iNKT cells in vitro and in vivo. IFN-α receptor blockade could reverse the loss of iNKT cells. Excessive stimulation of B cells with IFN-α altered the expression of enzymes that catalyze critical steps in GSL processing, increasing the expressions of glucosylceramide synthase (GCS) and globotrihexosylceramide synthase (Gb3S) but decreasing that of α-galactosidase A (α-galA). Inhibiting GCS or restoring α-galA expression prevented iNKT depletion by IFN-α-activated B cells. Taken together, our work indicated that excessive IFN-α perturbs GSL metabolism in B cells which in turn adversely affects iNKT homeostasis.
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Affiliation(s)
- Andy Hee-Meng Tan
- Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Singapore.
| | - Arleen Sanny
- Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Singapore
| | - Sze-Wai Ng
- Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Singapore
| | - Ying-Swan Ho
- Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Singapore
| | - Nurhidayah Basri
- Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Singapore
| | - Alison Ping Lee
- Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Singapore
| | - Kong-Peng Lam
- Bioprocessing Technology Institute, Agency for Science, Technology and Research, Singapore 138668, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 11799, Singapore; Department of Microbiology, and Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore; Department of Pediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore.
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Okuda T. PUGNAc treatment provokes globotetraosylceramide accumulation in human umbilical vein endothelial cells. Biochem Biophys Res Commun 2017; 487:76-82. [PMID: 28392398 DOI: 10.1016/j.bbrc.2017.04.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 04/05/2017] [Indexed: 12/11/2022]
Abstract
PUGNAc is a well-investigated inhibitor for protein-O-GlcNAcase, whereas recent investigations showed that PUGNAc had a broad range as inhibitor for cellular β-hexosaminidases. Here we report that PUGNAc treatment provokes globotetraosylceramide (Gb4Cer) accumulation in human umbilical vein endothelial cells (HUVEC). HPLC analysis and a quantitative ELISA using newly developed anti-Gb4Cer monoclonal antibody revealed that PUGNAc treatment specifically increased the expression of Gb4Cer among glycosphingolipids expressed in HUVEC. Although the effect was weaker than PUGNAc, an O-GlcNAcase selective inhibitor (Thiamet-G) treatment also increased Gb4Cer levels in HUVEC. Furthermore, both of PUGNAc and Thiamet-G treatment up-regulated the expression levels of α-1,4-galactosyltransferase/Gb3Cer synthase gene which encodes a key enzyme in Gb4Cer synthesis. These results indicate that protein-O-GlcNAcylation can regulate the expression levels of cellular Gb4Cer.
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Manna M, Javanainen M, Monne HMS, Gabius HJ, Rog T, Vattulainen I. Long-chain GM1 gangliosides alter transmembrane domain registration through interdigitation. Biochim Biophys Acta Biomembr 2017; 1859:870-878. [PMID: 28143757 DOI: 10.1016/j.bbamem.2017.01.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 01/02/2017] [Accepted: 01/27/2017] [Indexed: 12/25/2022]
Abstract
Extracellular and cytosolic leaflets in cellular membranes are distinctly different in lipid composition, yet they contribute together to signaling across the membranes. Here we consider a mechanism based on long-chain gangliosides for coupling the extracellular and cytosolic membrane leaflets together. Based on atomistic molecular dynamics simulations, we find that long-chain GM1 in the extracellular leaflet exhibits a strong tendency to protrude into the opposing bilayer leaflet. This interdigitation modulates the order in the cytosolic monolayer and thereby strengthens the interaction and coupling across a membrane. Coarse-grained simulations probing longer time scales in large membrane systems indicate that GM1 in the extracellular leaflet modulates the phase behavior in the cytosolic monolayer. While short-chain GM1 maintains phase-symmetric bilayers with a strong membrane registration effect, the situation is altered with long-chain GM1. Here, the significant interdigitation induced by long-chain GM1 modulates the behavior in the cytosolic GM1-free leaflet, weakening and slowing down the membrane registration process. The observed physical interaction mechanism provides a possible means to mediate or foster transmembrane communication associated with signal transduction.
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Affiliation(s)
- Moutusi Manna
- Department of Physics, Tampere University of Technology, P. O. Box 692, FI- 33101 Tampere, Finland
| | - Matti Javanainen
- Department of Physics, Tampere University of Technology, P. O. Box 692, FI- 33101 Tampere, Finland; Department of Physics, POB 64, FI-00014 University of Helsinki, Finland
| | - Hector Martinez-Seara Monne
- Department of Physics, Tampere University of Technology, P. O. Box 692, FI- 33101 Tampere, Finland; Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, CZ-16610, Prague, Czech Republic
| | - Hans-Joachim Gabius
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig Maximilian University, D-80539 Munchen, Germany
| | - Tomasz Rog
- Department of Physics, Tampere University of Technology, P. O. Box 692, FI- 33101 Tampere, Finland; Department of Physics, POB 64, FI-00014 University of Helsinki, Finland
| | - Ilpo Vattulainen
- Department of Physics, Tampere University of Technology, P. O. Box 692, FI- 33101 Tampere, Finland; Department of Physics, POB 64, FI-00014 University of Helsinki, Finland; MEMPHYS-Center for Biomembrane Physics, University of Southern Denmark, Odense, Denmark.
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Ho MY, Yu AL, Yu J. Glycosphingolipid dynamics in human embryonic stem cell and cancer: their characterization and biomedical implications. Glycoconj J 2017; 34:765-77. [PMID: 27549315 DOI: 10.1007/s10719-016-9715-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 07/09/2016] [Accepted: 07/13/2016] [Indexed: 01/16/2023]
Abstract
Glycosphingolipids (GSLs) are composed of complex glycans linked to sphingosines and various fatty acid chains. Antibodies against several GSLs designated as stage-specific embryonic antigens (SSEAs), have been widely used to characterize differentiation of embryonic stem (ES) cells. In view of the cross-reactivities of these antibodies with multiple glycans, a few laboratories have employed advanced mass spectrometry (MS) technologies to define the dynamic changes of surface GSLs upon ES differentiation. However, the amphiphilic nature and heterogeneity of GSLs make them difficult to decipher. In our studies, systematic survey of GSL expression profiles in human ES cells and differentiated derivatives was conducted, primarily with matrix-assisted laser desorption/ionization MS (MALDI-MS) and MS/MS analyses. In addition to the well-known ES-specific markers, SSEA-3 and SSEA-4, several previously undisclosed globo- and lacto-series GSLs, including Gb4Cer, Lc4Cer, fucosyl Lc4Cer, Globo H, and disialyl Gb5Cer were identified in the undifferentiated human ES and induced pluripotent stem cells. Furthermore, during differentiation to embryoid body outgrowth, the core structures of GSLs switched from globo- and lacto- to ganglio-series. Lineage-specific differentiation was also marked by alterations of specific GSLs. During differentiation into neural progenitors, core structures shifted to primarily ganglio-series dominated by GD3. GSL patterns shifted to prominent expression of Gb4Cer with little SSEA-3 and- 4 or GD3 during endodermal differentiation. Several issues relevant to MS analysis and novel GSLs in ES cells were discussed. Finally, unique GSL signatures in ES and cancer cells are exploited in glycan-targeted anti-cancer immunotherapy and their mechanistic investigations were discussed using anti-GD2 mAb and Globo H as examples.
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Miyaji K, Furukawa JI, Suzuki Y, Yamamoto N, Shinohara Y, Yuki N. Altered gene expression of glycosyltransferases and sialyltransferases and total amount of glycosphingolipids following herpes simplex virus infection. Carbohydr Res 2016; 434:37-43. [PMID: 27588895 DOI: 10.1016/j.carres.2016.08.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 06/01/2016] [Revised: 07/21/2016] [Accepted: 08/12/2016] [Indexed: 11/15/2022]
Abstract
There is a case report of a patient with overlapping Guillain-Barré syndrome and Bickerstaff brainstem encephalitis after infection with herpes simplex virus type 1 (HSV-1), who carried high titers of serum anti-GQ1b IgG antibodies. Several studies have linked viral infection to the modulation of ganglioside expression such as human T-lymphotropic virus to GD2 and simian virus 40 to GM3. Also, enhancement of the expression of GM2 on the cell membrane after cytomegalovirus infection has been reported. The objective of this study was to unveil the relationship between HSV-1 infection and the alteration of cellular ganglioside expression in neuronal and glial cell lines. In addition to these cell lines, several human tumor cell lines including astrocytoma cells, neuroblastoma cells, T-cell leukemia cells and kidney cells derived from normal human and monkey were infected with HSV-1 as well as HSV-2. To measure changes in ganglioside-related gene expressions and gangliosides levels in cells, quantitative PCR and glycosphingolipid-glycomic analysis were performed. Changes in gene expression of glycosyltransferases and sialyltransferases were observed in HSV-1- and HSV-2-infected cells, although with different trends. 39 glycosphingolipid-glycans were quantitatively analyzed. HSV-1 and HSV-2 infections resulted in changes in the total amount of gangliosides depending on the cell lines used and type of virus. Qualitative changes caused by each infection of HSV-1 and HSV-2 were almost negligible.
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Affiliation(s)
- Kazuki Miyaji
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore
| | - Jun-Ichi Furukawa
- Laboratory of Medical and Functional Glycomics, Graduate School of Advanced Life Science, and Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Sapporo 001-0021, Japan
| | - Youichi Suzuki
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore
| | - Naoki Yamamoto
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore
| | - Yasuro Shinohara
- Laboratory of Medical and Functional Glycomics, Graduate School of Advanced Life Science, and Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Sapporo 001-0021, Japan.
| | - Nobuhiro Yuki
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Centre for Translational Medicine, 14 Medical Drive, 117599, Singapore.
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Handa K, Hakomori SI. Changes of glycoconjugate expression profiles during early development. Glycoconj J 2016; 34:693-699. [PMID: 27318475 DOI: 10.1007/s10719-016-9684-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 05/23/2016] [Accepted: 05/24/2016] [Indexed: 11/30/2022]
Abstract
A variety of glycoconjugates, including glycosphingolipids (GSLs), expressed in mammalian tissues and cells were isolated and characterized in early biochemical studies. Later studies of virus-transformed fibroblasts demonstrated the association of GSL expression profiles with cell phenotypes. Changes of GSL expression profile were observed during mammalian embryogenesis. Cell surface molecules expressed on embryos in a stage-specific manner appeared to play key roles in regulation of cell-cell interaction and cell sorting during early development. Many mAbs showing stage-specific reactivity with mouse embryos were shown to recognize carbohydrate epitopes. Among various stage-specific embryonic antigens (SSEAs), SSEA-1 was found to react with neolacto-series GSL Lex, while SSEA-3 and SSEA-4 reacted with globo-series Gb5 and monosialyl-Gb5, respectively. GSL expression during mouse early development was shown to shift rapidly from globo-series to neolacto/lacto-series, and then to ganglio-series. We found that multivalent Lex caused decompaction of mouse embryos, indicating a functional role of Lex epitope in the compaction process. Autoaggregation of mouse embryonal carcinoma (EC) F9 cells provided a useful model of the compaction process. We showed that Lex-Lex interaction, a novel type of molecular interavction termed carbohydrate-carbohydrate interaction (CCI), was involved in cell aggregation. Similar shifting of GSL expression profiles from globo-series and neolacto/lacto-series to ganglio-series was observed during differentiation of human EC cells and embryonic stem (ES) cells, reflecting the essential role of cell surface glycoconjugates in early development.
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Affiliation(s)
- Kazuko Handa
- Division of Biomembrane Research, Pacific Northwest Research Institute, 720 Broadway, Seattle, WA, 98112, USA
| | - Sen-Itiroh Hakomori
- Division of Biomembrane Research, Pacific Northwest Research Institute, 720 Broadway, Seattle, WA, 98112, USA.
- Departments of Pathobiology and Global Health, University of Washington, Seattle, WA, 98195, USA.
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Ferraz MJ, Marques ARA, Gaspar P, Mirzaian M, van Roomen C, Ottenhoff R, Alfonso P, Irún P, Giraldo P, Wisse P, Sá Miranda C, Overkleeft HS, Aerts JM. Lyso- glycosphingolipid abnormalities in different murine models of lysosomal storage disorders. Mol Genet Metab 2016; 117:186-93. [PMID: 26750750 DOI: 10.1016/j.ymgme.2015.12.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 12/21/2015] [Accepted: 12/21/2015] [Indexed: 01/01/2023]
Abstract
In lysosomal glycosphingolipid storage disorders, marked elevations in corresponding glycosphingoid bases (lyso-glycosphingolipids) have been reported, such as galactosylsphingosine in Krabbe disease, glucosylsphingosine in Gaucher disease and globotriaosylsphingosine in Fabry disease. Using LC–MS/MS, we comparatively investigated the occurrence of abnormal lyso-glycosphingolipids in tissues and plasma of mice with deficiencies in lysosomal α-galactosidase A, glucocerebrosidase and galactocerebrosidase. The nature and specificity of lyso-glycosphingolipid abnormalities are reported and compared to that in correspondingly more abundant N-acylated glycosphingolipids. Specific elevations in tissue and plasma globotriaosylsphingosine were detected in α-galactosidase A-deficient mice; glucosylsphingosine in glucocerebrosidase-deficient mice and galactosylsphingosine in galactocerebrosidase-deficient animals. A similar investigation was conducted for two mouse models of Niemann Pick type C (Npc1nih and Npc1nmf164), revealing significant tissue elevation of several neutral glycosphingolipids and concomitant increased plasma glucosylsphingosine. This latter finding was recapitulated by analysis of plasma of NPC patients. The value of plasma glucosylsphingosine in biochemical confirmation of the diagnosis of NPC is discussed.
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Affiliation(s)
- Maria J Ferraz
- Department of Medical Biochemistry, Academic Medical Center, 1105, AZ, Amsterdam, The Netherlands
| | - André R A Marques
- Department of Medical Biochemistry, Academic Medical Center, 1105, AZ, Amsterdam, The Netherlands
| | - Paulo Gaspar
- Organelle Biogenesis & Function Group, Instituto de Investigação e Inovação em Saúde (I3S), 4200-135 Porto, Portugal; Lysosome and Peroxisome Biology Unit (UniLiPe), Institute of Molecular and Cell Biology (IBMC), Universidade do Porto, 4150-180 Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4050-313 Porto, Portugal
| | - Mina Mirzaian
- Department of Medical Biochemistry, Leiden Institute of Chemistry, Leiden University, 2333, CC, Leiden, The Netherlands
| | - Cindy van Roomen
- Department of Medical Biochemistry, Academic Medical Center, 1105, AZ, Amsterdam, The Netherlands
| | - Roelof Ottenhoff
- Department of Medical Biochemistry, Academic Medical Center, 1105, AZ, Amsterdam, The Netherlands
| | - Pilar Alfonso
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Unidad de Investigación Translacional, Zaragoza, Spain
| | - Pilar Irún
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Unidad de Investigación Translacional, Zaragoza, Spain
| | - Pilar Giraldo
- Centro de Investigación Biomédica en Red de Enfermedades Raras, Unidad de Investigación Translacional, Zaragoza, Spain
| | - Patrick Wisse
- Department of Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, 2333, CC, Leiden, The Netherlands
| | - Clara Sá Miranda
- Organelle Biogenesis & Function Group, Instituto de Investigação e Inovação em Saúde (I3S), 4200-135 Porto, Portugal; Lysosome and Peroxisome Biology Unit (UniLiPe), Institute of Molecular and Cell Biology (IBMC), Universidade do Porto, 4150-180 Porto, Portugal
| | - Herman S Overkleeft
- Department of Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, 2333, CC, Leiden, The Netherlands
| | - Johannes M Aerts
- Department of Medical Biochemistry, Academic Medical Center, 1105, AZ, Amsterdam, The Netherlands; Department of Medical Biochemistry, Leiden Institute of Chemistry, Leiden University, 2333, CC, Leiden, The Netherlands.
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Rožman M. Characterization and Modeling of the Collision Induced Dissociation Patterns of Deprotonated Glycosphingolipids: Cleavage of the Glycosidic Bond. J Am Soc Mass Spectrom 2016; 27:91-98. [PMID: 26297186 DOI: 10.1007/s13361-015-1247-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 07/13/2015] [Accepted: 07/23/2015] [Indexed: 06/04/2023]
Abstract
Glycosphingolipid fragmentation behavior was investigated by combining results from analysis of a series of negative ion tandem mass spectra and molecular modeling. Fragmentation patterns extracted from 75 tandem mass spectra of mainly acidic glycosphingolipid species (gangliosides) suggest prominent cleavage of the glycosidic bonds with retention of the glycosidic oxygen atom by the species formed from the reducing end (B and Y ion formation). Dominant product ions arise from dissociation of sialic acids glycosidic bonds whereas product ions resulting from cleavage of other glycosidic bonds are less abundant. Potential energy surfaces and unimolecular reaction rates of several low-energy fragmentation pathways leading to cleavage of glycosidic bonds were estimated in order to explain observed dissociation patterns. Glycosidic bond cleavage in both neutral (unsubstituted glycosyl group) and acidic glycosphingolipids was the outcome of the charge-directed intramolecular nucleophilic substitution (SN2) mechanism. According to the suggested mechanism, the nucleophile in a form of carboxylate or oxyanion attacks the carbon at position one of the sugar ring, simultaneously breaking the glycosidic bond and yielding an epoxide. For gangliosides, unimolecular reaction rates suggest that dominant product ions related to the cleavage of sialic acid glycosidic bonds are formed via direct dissociation channels. On the other hand, low abundant product ions related to the dissociation of other glycosidic bonds are more likely to be the result of sequential dissociation. Although results from this study mainly contribute to the understanding of glycosphingolipid fragmentation chemistry, some mechanistic findings regarding cleavage of the glycosidic bond may be applicable to other glycoconjugates.
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Affiliation(s)
- Marko Rožman
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička 54, HR-10002, Zagreb, Croatia.
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Courjol F, Mille C, Hall RA, Masset A, Aijjou R, Gow NA, Poulain D, Jouault T, Fradin C. Initiation of phospholipomannan β-1,2 mannosylation involves Bmts with redundant activity, influences its cell wall location and regulates β-glucans homeostasis but is dispensable for Candida albicans systemic infection. Biochimie 2016; 120:96-104. [PMID: 26427558 DOI: 10.1016/j.biochi.2015.09.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 09/25/2015] [Indexed: 11/20/2022]
Abstract
Pathogenic and non-pathogenic fungi synthesize glycosphingolipids, which have a crucial role in growth and viability. Glycosphingolipids also contribute to fungal-associated pathogenesis. The opportunistic yeast pathogen Candida albicans synthesizes phospholipomannan (PLM), which is a glycosphingolipid of the mannosylinositol phosphorylceramide family. Through its lipid and glycan moieties, PLM contributes to the initial recognition of the yeast, causing immune system disorder and persistent fungal disease through activation of host signaling pathways. The lipid moiety of PLM activates the deregulation signaling pathway involved in yeast phagocytosis whereas its glycan moiety, composed of β-1,2 mannosides (β-Mans), participates to inflammatory processes through a mechanism involving Galectin-3. Biosynthesis of PLM β-Mans involves two β-1,2 mannosyltransferases (Bmts) that initiate (Bmt5) and elongate (Bmt6) the glycan chains. After generation of double bmtsΔ mutants, we show that Bmt5 has redundant activity with Bmt2, which can replace Bmt5 in bmt5Δ mutant. We also report that PLM is located in the inner layer of the yeast cell wall. PLM seems to be not essential for systemic infection of the yeast. However, defect of PLM β-mannosylation increases resistance of C. albicans to inhibitors of β-glucans and chitin synthesis, highlighting a role of PLM in cell wall homeostasis.
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Santalova EA, Denisenko VA, Dmitrenok PS. Structural Analysis of the Minor Cerebrosides from a Glass Sponge Aulosaccus sp. Lipids 2015; 50:1209-18. [PMID: 26475294 DOI: 10.1007/s11745-015-4077-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 07/30/2015] [Accepted: 09/10/2015] [Indexed: 11/24/2022]
Abstract
The minor cerebrosides from a Far-Eastern glass sponge Aulosaccus sp. were analyzed as constituents of some multi-component RP-HPLC fractions. The structures of eighteen new and one known cerebrosides were elucidated on the basis of NMR spectroscopy, mass spectrometry, optical rotation data and chemical transformations. These β-D-glucopyranosyl-(1→1)-ceramides contain sphingoid bases N-acylated with straight-chain (2R)-2-hydroxy fatty acids, namely, (2S,3S,4R,11Z)-2-aminoeicos-11-ene-1,3,4-triol, acylated with 15E-22:1, 16Z-21:1, 15Z-21:1, 15Z-20:1, 15E-20:1, 19:0, 18:0 acids, (2S,3S,4R)-2-amino-13-methyltetradecane-1,3,4-triol--with 19Z-26:1, 16Z-23:1, 23:0, 22:0 acids, (2S,3S,4R)-2-amino-14-methylpentadecane-1,3,4-triol--with 16Z-23:1, 16E-23:1, 15Z-22:1, 22:0 acids, (2S,3S,4R)-2-amino-14-methylhexadecane-1,3,4-triol, linked to 16Z-23:1, 15Z-22:1 acids, (2S,3S,4R)-2-amino-9-methylhexadecane-1,3,4-triol--to 16Z-23:1 acid, and (2S,3S,4R)-2-aminohexadecane-1,3,4-triol, attached to 15Z-22:1 acid. The 13-methyl and 9-methyl-branched trihydroxy sphingoid base backbones (C15 and C17, respectively) have not been found previously in sphingolipids. The ceramide parts, containing other backbones, present new variants of N-acylation of the marine sphingoid bases with the 2-hydroxy fatty acids. The combination of the instrumental and chemical methods used in this study improved the efficiency of the structural analysis of such complex cerebroside mixtures that gave more detailed information on glycosphingolipid metabolism of the organism.
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Affiliation(s)
- Elena A Santalova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Pr. 100 let Vladivostoku, 159, Vladivostok, 690022, Russia.
| | - Vladimir A Denisenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Pr. 100 let Vladivostoku, 159, Vladivostok, 690022, Russia
| | - Pavel S Dmitrenok
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Pr. 100 let Vladivostoku, 159, Vladivostok, 690022, Russia
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Lipina C, Hundal HS. Ganglioside GM3 as a gatekeeper of obesity-associated insulin resistance: Evidence and mechanisms. FEBS Lett 2015; 589:3221-7. [PMID: 26434718 DOI: 10.1016/j.febslet.2015.09.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 09/01/2015] [Accepted: 09/20/2015] [Indexed: 12/29/2022]
Abstract
Gangliosides constitute a large family of sialic acid-containing glycosphingolipids which play a key regulatory role in a diverse array of cellular processes, including receptor-associated signalling. Accordingly, the aberrant production of the ganglioside GM3 has been linked to pathophysiological changes associated with obesity, which in turn can lead to metabolic disorders such as insulin resistance and type 2 diabetes mellitus. This review examines the role of GM3 in mediating obesity-induced perturbations in metabolic function, including impaired insulin action. By doing so, we highlight the potential use of therapies targeting GM3 biosynthesis in order to counteract obesity-related metabolic disorders.
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Furukawa K, Ohmi Y, Kondo Y, Ohkawa Y, Tajima O, Furukawa K. Regulatory function of glycosphingolipids in the inflammation and degeneration. Arch Biochem Biophys 2015; 571:58-65. [PMID: 25688919 DOI: 10.1016/j.abb.2015.02.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 01/19/2015] [Accepted: 02/09/2015] [Indexed: 12/26/2022]
Abstract
Recent progress in the biological sciences has revealed that a number of extrinsic and intrinsic environmental factors may cause chronic inflammation. When these insults are persistent or intermittently repeated, regardless of extrinsic or intrinsic origins, homeostasis of our bodies would be disturbed and undergo long-term impact. These situations might give rise to chronic inflammation, leading to various diseases as results of accumulative effects of various inflammatory reactions. Complex carbohydrates expressed mainly on the cell surface have been demonstrated to play roles in fine-tuning of various biological processes to maintain homeostasis of cells, organs and our bodies. When abnormal physicochemical insults and harmful pathogens invade, the fine-tuning including modification of the glycosylation patterns is continuously exerted. Therefore, defects in the proper response with proper glycosylation lead to chronic inflammation and subsequent deterioration of individual tissues and organs. Genetic depletion of sialic acid-containing glycolipids, gangliosides resulted in the inflammation of CNS and neurodegeneration. Lactosylceramide was also reported to mediate neuroinflammation, leading to chronic inflammatory diseases. Defects of globoseries glycolipids resulted in the increased sensitivity to LPS toxicity. Thus, possibilities that manipulation of synthesis and expression of glycosphingolipids may be applicable for the disease control are now proposed.
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Abstract
Prostate cancer is annually the most common newly diagnosed cancer in men. The prostate functions as a major secretory gland for the production of glycoproteins critical to sperm activation and reproduction. Prostate-specific antigen (PSA), produced by the prostate, is one of the most commonly assayed glycoproteins in blood, serving as a biomarker for early detection and progression of prostate cancer. The single site of N-glycosylation on PSA has been the target of multiple glycan characterization studies. In this review, the extensive number of studies that have characterized the changes in O-linked and N-linked glycosylations associated with prostate cancer development and progression will be summarized. This includes analysis of the glycosylation of PSA, and other prostate glycoproteins, in tissues, clinical biofluids, and cell line models. Other studies are summarized in the context of understanding the complexities of these glycan changes in order to address the many confounding questions associated with prostate cancer, as well as efforts to improve prostate cancer biomarker assays using targeted glycomic-based strategies.
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Affiliation(s)
- Richard R Drake
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, South Carolina, USA.
| | - E Ellen Jones
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Thomas W Powers
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Julius O Nyalwidhe
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia, USA
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