1
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Djambazova K, Gibson-Corley KN, Freiberg JA, Caprioli RM, Skaar EP, Spraggins JM. MALDI TIMS IMS Reveals Ganglioside Molecular Diversity within Murine S. aureus Kidney Tissue Abscesses. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1692-1701. [PMID: 39052897 PMCID: PMC11311236 DOI: 10.1021/jasms.4c00089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 06/11/2024] [Accepted: 06/28/2024] [Indexed: 07/27/2024]
Abstract
Gangliosides play important roles in innate and adaptive immunity. The high degree of structural heterogeneity results in significant variability in ganglioside expression patterns and greatly complicates linking structure and function. Structural characterization at the site of infection is essential in elucidating host ganglioside function in response to invading pathogens, such as Staphylococcus aureus (S. aureus). Matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI IMS) enables high-specificity spatial investigation of intact gangliosides. Here, ganglioside structural and spatial heterogeneity within an S. aureus-infected mouse kidney abscess was characterized. Differences in spatial distributions were observed for gangliosides of different classes and those that differ in ceramide chain composition and oligosaccharide-bound sialic acid. Furthermore, integrating trapped ion mobility spectrometry (TIMS) allowed for the gas-phase separation and visualization of monosialylated ganglioside isomers that differ in sialic acid type and position. The isomers differ in spatial distributions within the host-pathogen interface, where molecular patterns revealed new molecular zones in the abscess previously unidentified by traditional histology.
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Affiliation(s)
- Katerina
V. Djambazova
- Department
of Cell and Developmental Biology, Vanderbilt
University, Nashville, Tennessee 37232, United States
- Mass
Spectrometry Research Center, Vanderbilt
University, Nashville, Tennessee 37232, United States
| | - Katherine N. Gibson-Corley
- Department
of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
| | - Jeffrey A. Freiberg
- Vanderbilt
Institute for Infection, Immunology and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- Division
of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
| | - Richard M. Caprioli
- Mass
Spectrometry Research Center, Vanderbilt
University, Nashville, Tennessee 37232, United States
- Department
of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- Department
of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department
of Pharmacology, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department
of Medicine, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department
of Chemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Eric P. Skaar
- Department
of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- Vanderbilt
Institute for Infection, Immunology and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- Vanderbilt
Institute for Chemical Biology, Vanderbilt
University, Nashville, Tennessee 37232, United States
| | - Jeffrey M. Spraggins
- Department
of Cell and Developmental Biology, Vanderbilt
University, Nashville, Tennessee 37232, United States
- Mass
Spectrometry Research Center, Vanderbilt
University, Nashville, Tennessee 37232, United States
- Department
of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- Department
of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department
of Chemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
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2
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Schengrund CL. Sphingolipids: Less Enigmatic but Still Many Questions about the Role(s) of Ceramide in the Synthesis/Function of the Ganglioside Class of Glycosphingolipids. Int J Mol Sci 2024; 25:6312. [PMID: 38928016 PMCID: PMC11203820 DOI: 10.3390/ijms25126312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/17/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024] Open
Abstract
While much has been learned about sphingolipids, originally named for their sphinx-like enigmatic properties, there are still many unanswered questions about the possible effect(s) of the composition of ceramide on the synthesis and/or behavior of a glycosphingolipid (GSL). Over time, studies of their ceramide component, the sphingoid base containing the lipid moiety of GSLs, were frequently distinct from those performed to ascertain the roles of the carbohydrate moieties. Due to the number of classes of GSLs that can be derived from ceramide, this review focuses on the possible role(s) of ceramide in the synthesis/function of just one GSL class, derived from glucosylceramide (Glc-Cer), namely sialylated ganglio derivatives, initially characterized and named gangliosides (GGs) due to their presence in ganglion cells. While much is known about their synthesis and function, much is still being learned. For example, it is only within the last 15-20 years or so that the mechanism by which the fatty acyl component of ceramide affected its transport to different sites in the Golgi, where it is used for the synthesis of Glu- or galactosyl-Cer (Gal-Cer) and more complex GSLs, was defined. Still to be fully addressed are questions such as (1) whether ceramide composition affects the transport of partially glycosylated GSLs to sites where their carbohydrate chain can be elongated or affects the activity of glycosyl transferases catalyzing that elongation; (2) what controls the differences seen in the ceramide composition of GGs that have identical carbohydrate compositions but vary in that of their ceramide and vice versa; (3) how alterations in ceramide composition affect the function of membrane GGs; and (4) how this knowledge might be applied to the development of therapies for treating diseases that correlate with abnormal expression of GGs. The availability of an updatable data bank of complete structures for individual classes of GSLs found in normal tissues as well as those associated with disease would facilitate research in this area.
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Affiliation(s)
- Cara-Lynne Schengrund
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
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3
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Luh D, Heiles S, Roderfeld M, Grevelding CG, Roeb E, Spengler B. Hepatic Topology of Glycosphingolipids in Schistosoma mansoni-Infected Hamsters. Anal Chem 2024; 96:6311-6320. [PMID: 38594017 PMCID: PMC11044111 DOI: 10.1021/acs.analchem.3c05846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/01/2024] [Accepted: 03/11/2024] [Indexed: 04/11/2024]
Abstract
Schistosomiasis is a neglected tropical disease caused by worm parasites of the genus Schistosoma. Upon infection, parasite eggs can lodge inside of host organs like the liver. This leads to granuloma formation, which is the main cause of the pathology of schistosomiasis. To better understand the different levels of host-pathogen interaction and pathology, our study focused on the characterization of glycosphingolipids (GSLs). For this purpose, GSLs in livers of infected and noninfected hamsters were studied by combining high-spatial-resolution atmospheric-pressure scanning microprobe matrix-assisted laser desorption/ionization mass spectrometry imaging (AP-SMALDI MSI) with nanoscale hydrophilic interaction liquid chromatography tandem mass spectrometry (nano-HILIC MS/MS). Nano-HILIC MS/MS revealed 60 GSL species with a distinct saccharide and ceramide composition. AP-SMALDI MSI measurements were conducted in positive- and negative-ion mode for the visualization of neutral and acidic GSLs. Based on nano-HILIC MS/MS results, we discovered no downregulated but 50 significantly upregulated GSLs in liver samples of infected hamsters. AP-SMALDI MSI showed that 44 of these GSL species were associated with the granulomas in the liver tissue. Our findings suggest an important role of GSLs during granuloma formation.
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Affiliation(s)
- David Luh
- Institute
of Inorganic and Analytical Chemistry, Justus
Liebig University Giessen, 35392 Giessen, Germany
| | - Sven Heiles
- Institute
of Inorganic and Analytical Chemistry, Justus
Liebig University Giessen, 35392 Giessen, Germany
- Leibniz-Institut
für Analytische Wissenschaften—ISAS—e.V., 44139 Dortmund, Germany
- Lipidomics,
Faculty of Chemistry, University of Duisburg-Essen, 45141 Essen, Germany
| | - Martin Roderfeld
- Gastroenterology, Justus Liebig University Giessen, 35392Giessen, Germany
| | | | - Elke Roeb
- Gastroenterology, Justus Liebig University Giessen, 35392Giessen, Germany
| | - Bernhard Spengler
- Institute
of Inorganic and Analytical Chemistry, Justus
Liebig University Giessen, 35392 Giessen, Germany
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4
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Roux A, Winnard PT, Van Voss MH, Muller L, Jackson SN, Hoffer B, Woods AS, Raman V. MALDI-MSI of lipids in a model of breast cancer brain metastasis provides a surrogate measure of ischemia/hypoxia. Mol Cell Biochem 2023; 478:2567-2580. [PMID: 36884151 DOI: 10.1007/s11010-023-04685-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 02/20/2023] [Indexed: 03/09/2023]
Abstract
Breast cancer brain metastasis (BCBM) has an incidence of 10-30%. It is incurable and the biological mechanisms that promote its progression remain largely undefined. Consequently, to gain insights into BCBM processes, we have developed a spontaneous mouse model of BCBM and in this study found a 20% penetrance of macro-metastatic brain lesion formation. Considering that lipid metabolism is indispensable to metastatic progression, our goal was the mapping of lipid distributions throughout the metastatic regions of the brain. Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) of lipids revealed that, relative to surrounding brain tissue, seven long-chain (13-21 carbons long) fatty acylcarnitines, as well as two phosphatidylcholines, two phosphatidylinositols two diacylglycerols, a long-chain phosphatidylethanolamine, and a long-chain sphingomyelin were highly concentrated in the metastatic brain lesion In broad terms, lipids known to be enriched in brain tissues, such as very long-chain (≥ 22 carbons in length) polyunsaturated fatty acid of phosphatidylcholines, phosphatidylethanolamine, sphingomyelins, sulfatides, phosphatidylinositol phosphates, and galactosylceramides, were not found or only found in trace amounts in the metastatic lesion and instead consistently detected in surrounding brain tissues. The data, from this mouse model, highlights an accumulation of fatty acylcarnitines as possible biological makers of a chaotic inefficient vasculature within the metastasis, resulting in relatively inadequate blood flow and disruption of fatty acid β-oxidation due to ischemia/hypoxia.
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Affiliation(s)
- Aurelie Roux
- Structural Biology Unit, Cellular Neurobiology Branch, Integrative Neuroscience NIDA-IRP, NIH, 333 Cassell Drive, Baltimore, MD, 21224, USA
| | - Paul T Winnard
- Division of Cancer Imaging Research, Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Marise Heerma Van Voss
- Division of Cancer Imaging Research, Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Ludovic Muller
- Structural Biology Unit, Cellular Neurobiology Branch, Integrative Neuroscience NIDA-IRP, NIH, 333 Cassell Drive, Baltimore, MD, 21224, USA
| | - Shelley N Jackson
- Structural Biology Unit, Cellular Neurobiology Branch, Integrative Neuroscience NIDA-IRP, NIH, 333 Cassell Drive, Baltimore, MD, 21224, USA
| | - Barry Hoffer
- Case Western Reserve University, Cleveland, OH, USA
| | - Amina S Woods
- Structural Biology Unit, Cellular Neurobiology Branch, Integrative Neuroscience NIDA-IRP, NIH, 333 Cassell Drive, Baltimore, MD, 21224, USA.
- Pharmacology and Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA.
| | - Venu Raman
- Division of Cancer Imaging Research, Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands.
- Pharmacology and Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA.
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5
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Machy P, Mortier E, Birklé S. Biology of GD2 ganglioside: implications for cancer immunotherapy. Front Pharmacol 2023; 14:1249929. [PMID: 37670947 PMCID: PMC10475612 DOI: 10.3389/fphar.2023.1249929] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 07/31/2023] [Indexed: 09/07/2023] Open
Abstract
Part of the broader glycosphingolipid family, gangliosides are composed of a ceramide bound to a sialic acid-containing glycan chain, and locate at the plasma membrane. Gangliosides are produced through sequential steps of glycosylation and sialylation. This diversity of composition is reflected in differences in expression patterns and functions of the various gangliosides. Ganglioside GD2 designates different subspecies following a basic structure containing three carbohydrate residues and two sialic acids. GD2 expression, usually restrained to limited tissues, is frequently altered in various neuroectoderm-derived cancers. While GD2 is of evident interest, its glycolipid nature has rendered research challenging. Physiological GD2 expression has been linked to developmental processes. Passing this stage, varying levels of GD2, physiologically expressed mainly in the central nervous system, affect composition and formation of membrane microdomains involved in surface receptor signaling. Overexpressed in cancer, GD2 has been shown to enhance cell survival and invasion. Furthermore, binding of antibodies leads to immune-independent cell death mechanisms. In addition, GD2 contributes to T-cell dysfunction, and functions as an immune checkpoint. Given the cancer-associated functions, GD2 has been a source of interest for immunotherapy. As a potential biomarker, methods are being developed to quantify GD2 from patients' samples. In addition, various therapeutic strategies are tested. Based on initial success with antibodies, derivates such as bispecific antibodies and immunocytokines have been developed, engaging patient immune system. Cytotoxic effectors or payloads may be redirected based on anti-GD2 antibodies. Finally, vaccines can be used to mount an immune response in patients. We review here the pertinent biological information on GD2 which may be of use for optimizing current immunotherapeutic strategies.
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Affiliation(s)
| | | | - Stéphane Birklé
- Nantes Université, Univ Angers, INSERM, CNRS, CRCI2NA, Nantes, France
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6
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Djambazova KV, Dufresne M, Migas LG, Kruse ARS, Van de Plas R, Caprioli RM, Spraggins JM. MALDI TIMS IMS of Disialoganglioside Isomers─GD1a and GD1b in Murine Brain Tissue. Anal Chem 2023; 95:1176-1183. [PMID: 36574465 DOI: 10.1021/acs.analchem.2c03939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Gangliosides are acidic glycosphingolipids, containing ceramide moieties and oligosaccharide chains with one or more sialic acid residue(s) and are highly diverse isomeric structures with distinct biological roles. Matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI IMS) enables the untargeted spatial analysis of gangliosides, among other biomolecules, directly from tissue sections. Integrating trapped ion mobility spectrometry with MALDI IMS allows for the analysis of isomeric lipid structures in situ. Here, we demonstrate the gas-phase separation and identification of disialoganglioside isomers GD1a and GD1b that differ in the position of a sialic acid residue, in multiple samples, including a standard mixture of both isomers, a biological extract, and directly from thin tissue sections. The unique spatial distributions of GD1a/b (d36:1) and GD1a/b (d38:1) isomers were determined in rat hippocampus and spinal cord tissue sections, demonstrating the ability to structurally characterize and spatially map gangliosides based on both the carbohydrate chain and ceramide moieties.
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Affiliation(s)
- Katerina V Djambazova
- Department of Chemistry, Vanderbilt University, 7330 Stevenson Center, Station B 351822, Nashville, Tennessee 37235, United States
- Mass Spectrometry Research Center, Vanderbilt University, 465 21st Avenue S #9160, Nashville, Tennessee 37235, United States
| | - Martin Dufresne
- Mass Spectrometry Research Center, Vanderbilt University, 465 21st Avenue S #9160, Nashville, Tennessee 37235, United States
- Department of Biochemistry, Vanderbilt University, 607 Light Hall, Nashville, Tennessee 37205, United States
| | - Lukasz G Migas
- Delft Center for Systems and Control, Delft University of Technology, 2628 CD Delft, The Netherlands
| | - Angela R S Kruse
- Mass Spectrometry Research Center, Vanderbilt University, 465 21st Avenue S #9160, Nashville, Tennessee 37235, United States
- Department of Biochemistry, Vanderbilt University, 607 Light Hall, Nashville, Tennessee 37205, United States
| | - Raf Van de Plas
- Delft Center for Systems and Control, Delft University of Technology, 2628 CD Delft, The Netherlands
| | - Richard M Caprioli
- Department of Chemistry, Vanderbilt University, 7330 Stevenson Center, Station B 351822, Nashville, Tennessee 37235, United States
- Mass Spectrometry Research Center, Vanderbilt University, 465 21st Avenue S #9160, Nashville, Tennessee 37235, United States
- Department of Biochemistry, Vanderbilt University, 607 Light Hall, Nashville, Tennessee 37205, United States
- Department of Pharmacology, Vanderbilt University, 2220 Pierce Avenue, Nashville, Tennessee 37232, United States
- Department of Medicine, Vanderbilt University, 1161 21st Avenue S, Nashville, Tennessee 37232, United States
| | - Jeffrey M Spraggins
- Department of Chemistry, Vanderbilt University, 7330 Stevenson Center, Station B 351822, Nashville, Tennessee 37235, United States
- Mass Spectrometry Research Center, Vanderbilt University, 465 21st Avenue S #9160, Nashville, Tennessee 37235, United States
- Department of Biochemistry, Vanderbilt University, 607 Light Hall, Nashville, Tennessee 37205, United States
- Department of Cell and Developmental Biology, Vanderbilt University, 465 21st Avenue S #3218, Nashville, Tennessee 37232, United States
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7
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Chao HC, McLuckey SA. Manipulation of Ion Types via Gas-Phase Ion/Ion Chemistry for the Structural Characterization of the Glycan Moiety on Gangliosides. Anal Chem 2021; 93:15752-15760. [PMID: 34788022 DOI: 10.1021/acs.analchem.1c03876] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Gangliosides are the most abundant glycolipid among eukaryotic cell membranes and consist of a glycan head moiety containing one or more sialic acids and a ceramide chain. The analysis of the glycan moieties among different subclass gangliosides, including GM, GD, and GT gangliosides, remains a challenge for shotgun lipidomics. Here, we present a novel shotgun lipidomics approach employing gas-phase ion/ion chemistry. The gas-phase derivatization strategy provides a rapid way to manipulate the ion-types of the precursor ions, and, in conjunction with collision induced dissociation (CID), allows for the elucidation of the structures of the glycan moieties from gangliosides. In addition to the enhancement of structural characterization, gas-phase ion chemistry leads to a form of purification of the precursor ions prior to CID by neutralizing isobaric or isomeric ions with different charge states but with similar or identical m/z values. To demonstrate the proposed strategy, both deprotonated GM3 and GM1 gangliosides ([GM-H]-) were isolated and subjected to reaction with magnesium-Terpy complex cations ([Mg(Terpy)2]2+). The post-reaction product spectra show the elimination of possible contamination, illustrating the ability of charge-switching derivatization to purify the precursor ions. Isomeric differentiation between GD1a and GD1b was achieved by the sequential ion/ion reactions, with the CID of [GD1-H+Mg]+ showing diagnostic fragment ions from the isomers. Moreover, isomeric identification among GT1a, GT1b, and GT1c was accomplished while performing a gas-phase magnesium transfer reaction and CID. Lastly, the presented workflow was applied to ganglioside profiling in a porcine brain extract. In total, 34 gangliosides were profiled among only 20 precursor ion m/z values by resolving isomers. Furthermore, the fucosylation site on GM1 and GD1, and N-glycolylneuraminic acid conjugated GT1 isomers was identified. Relative quantification of isomeric two isomeric pairs, GD1a/b C36:1 and GD1a/b C38:1 was also achieved using pure component product ion spectra coupled with a total least-squares method. The results demonstrate the applicability and strength of using shotgun MS coupled with gas-phase ion/ion chemistry to characterize the glycan moiety structures on different subclasses of gangliosides.
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Affiliation(s)
- Hsi-Chun Chao
- Department of Chemistry Purdue University 560 Oval Drive West Lafayette, Indiana 47907, United States
| | - Scott A McLuckey
- Department of Chemistry Purdue University 560 Oval Drive West Lafayette, Indiana 47907, United States
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8
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Galkina OV, Vetrovoy OV, Eschenko ND. The Role of Lipids in Implementing Specific Functions in the Central Nervous System. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1068162021050253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Ocular flutter as the cardinal feature of anti-GM2 rhombencephalitis. Neurol Sci 2021; 42:3003-3005. [PMID: 33646439 DOI: 10.1007/s10072-021-05138-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 02/22/2021] [Indexed: 10/22/2022]
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10
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Grassi S, Giussani P, Mauri L, Prioni S, Sonnino S, Prinetti A. Lipid rafts and neurodegeneration: structural and functional roles in physiologic aging and neurodegenerative diseases. J Lipid Res 2020; 61:636-654. [PMID: 31871065 PMCID: PMC7193971 DOI: 10.1194/jlr.tr119000427] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/11/2019] [Indexed: 12/14/2022] Open
Abstract
Lipid rafts are small, dynamic membrane areas characterized by the clustering of selected membrane lipids as the result of the spontaneous separation of glycolipids, sphingolipids, and cholesterol in a liquid-ordered phase. The exact dynamics underlying phase separation of membrane lipids in the complex biological membranes are still not fully understood. Nevertheless, alterations in the membrane lipid composition affect the lateral organization of molecules belonging to lipid rafts. Neural lipid rafts are found in brain cells, including neurons, astrocytes, and microglia, and are characterized by a high enrichment of specific lipids depending on the cell type. These lipid rafts seem to organize and determine the function of multiprotein complexes involved in several aspects of signal transduction, thus regulating the homeostasis of the brain. The progressive decline of brain performance along with physiological aging is at least in part associated with alterations in the composition and structure of neural lipid rafts. In addition, neurodegenerative conditions, such as lysosomal storage disorders, multiple sclerosis, and Parkinson's, Huntington's, and Alzheimer's diseases, are frequently characterized by dysregulated lipid metabolism, which in turn affects the structure of lipid rafts. Several events underlying the pathogenesis of these diseases appear to depend on the altered composition of lipid rafts. Thus, the structure and function of lipid rafts play a central role in the pathogenesis of many common neurodegenerative diseases.jlr;61/5/636/F1F1f1.
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Affiliation(s)
- Sara Grassi
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Paola Giussani
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Laura Mauri
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Simona Prioni
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Sandro Sonnino
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Alessandro Prinetti
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy. mailto:
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11
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Post-Glycosylation Modification of Sialic Acid and Its Role in Virus Pathogenesis. Vaccines (Basel) 2019; 7:vaccines7040171. [PMID: 31683930 PMCID: PMC6963189 DOI: 10.3390/vaccines7040171] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/08/2019] [Accepted: 10/23/2019] [Indexed: 01/20/2023] Open
Abstract
Sialic acids are a family of nine carbon keto-aldononulosonic acids presented at the terminal ends of glycans on cellular membranes. α-Linked sialoglycoconjugates often undergo post-glycosylation modifications, among which O-acetylation of N-acetyl neuraminic acid (Neu5Ac) is the most common in mammalian cells. Isoforms of sialic acid are critical determinants of virus pathogenesis. To date, the focus of viral receptor-mediated attachment has been on Neu5Ac. O-Acetylated Neu5Acs have been largely ignored as receptor determinants of virus pathogenesis, although it is ubiquitous across species. Significantly, the array of structures resulting from site-specific O-acetylation by sialic acid O-acetyltransferases (SOATs) provides a means to examine specificity of viral binding to host cells. Specifically, C4 O-acetylated Neu5Ac can influence virus pathogenicity. However, the biological implications of only O-acetylated Neu5Ac at C7-9 have been explored extensively. This review will highlight the biological significance, extraction methods, and synthetic modifications of C4 O-acetylated Neu5Ac that may provide value in therapeutic developments and targets to prevent virus related diseases.
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12
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Lee C, Ni CK. Soft Matrix-Assisted Laser Desorption/Ionization for Labile Glycoconjugates. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:1455-1463. [PMID: 30993639 DOI: 10.1007/s13361-019-02208-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 03/24/2019] [Accepted: 03/25/2019] [Indexed: 06/09/2023]
Abstract
Since its introduction, matrix-assisted laser desorption/ionization (MALDI) has been widely used for the mass analysis of biomolecules. The "soft ionization" of MALDI enables accurate mass determination of intact biomolecules. However, the ionization and desorption processes of MALDI are not adequately soft as many labile biomolecules, such as glycoconjugates containing sialic acid or the sulfate functional group, easily dissociate into fragments and sometimes, no intact molecules are observed. In this study, we compared the conventional matrix of MALDI, namely 2,5-dihydroxybenzoic acid, to various soft matrices of MALDI-specifically, 5-methoxysalicylic acid, diamond nanoparticle trilayers, HgTe nanostructures, ionic liquid, and droplets of frozen solutions-by using three labile glycoconjugates as analytes: gangliosides, heparin, and pullulan. We demonstrated that droplets of frozen solution are the softest matrices for gangliosides and heparin. In particular, droplets of frozen solution do not generate fragments for gangliosides and can be used to determine the relative abundance of various gangliosides, whereas ionic liquid 2,5-dihydroxybenzoic acid butylamine is the most suitable matrix for pullulan mass analysis. Graphical Abstract.
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Affiliation(s)
- Chuping Lee
- Institute of Atomic and Molecular Sciences, Academia Sinica, P. O. Box 23-166, Taipei, 10617, Taiwan
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA
| | - Chi-Kung Ni
- Institute of Atomic and Molecular Sciences, Academia Sinica, P. O. Box 23-166, Taipei, 10617, Taiwan.
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan.
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13
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The serum SA levels are significantly increased in sepsis but decreased in cirrhosis. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2019; 162:335-348. [PMID: 30905461 DOI: 10.1016/bs.pmbts.2019.01.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Most of proteins in human blood circulation are glycoproteins with one or more covalently linked N- or O-linked glycans. Sialic acid (SA) generally occurs as the terminal monosaccharide on the glycans. SA in glycoproteins modulates a wide range of physiological and pathological processes and has been routinely measured in hospital since 1950s. Increased serum SA levels have been associated with different types of cancers. However, a systematic comparison of the serum SA levels in different types of human diseases has not been reported. In current study, 160,537 clinical lab test results of serum SA levels from healthy individuals and patients with 64 different types of diseases during the past 5 years in our hospital were retrieved and analyzed. Based on the mean (SD), median, and p (-Log10p) values, we found that patients suffering 55 different types of cancer and noncancer diseases such as sepsis, pancreatitis, bone cancer, rheumatoid arthritis, pancreatic cancer, and encephalitis had significantly (p<0.05, -Log10p>1.30) increased median serum SA levels whereas patients suffering hepatic encephalopathy, cirrhosis, renal cyst, and hepatitis had significantly decreased median serum SA levels compared to that of healthy controls. Moreover, the greatest increase in the mean (SD) and -Log10p values was observed in sepsis and pancreatitis, respectively, but not in cancers. Thus, the regulations of serum SA levels were much more complicated than previously assumed. Understanding the molecular mechanisms behind these observations would make serum SA a useful biomarker to facilitate personalized diagnosis and treatment for patients with different diseases.
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14
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Abstract
In this chapter, we briefly describe the structural features of gangliosides, and focus on the peculiar chemicophysical features of gangliosides, an important class of membrane amphipathic lipids that represent an important driving force determining the organization and properties of cellular membranes.
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15
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Mass Spectrometry-Based Tissue Imaging of Small Molecules. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1140:99-109. [PMID: 31347043 DOI: 10.1007/978-3-030-15950-4_5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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16
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Zeiner PS, Brandhofe A, Müller-Eschner M, Steinmetz H, Pfeilschifter W. Area postrema syndrome as frequent feature of Bickerstaff brainstem encephalitis. Ann Clin Transl Neurol 2018; 5:1534-1542. [PMID: 30564620 PMCID: PMC6292382 DOI: 10.1002/acn3.666] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 08/27/2018] [Accepted: 09/10/2018] [Indexed: 01/12/2023] Open
Abstract
Objective Area postrema (AP) syndrome (defined as: nausea and/or emesis and/or singultus at onset of brainstem dysfunction) comprises complex pathophysiologic mechanisms triggered by different entities. The first objective was to assess the frequency of AP syndrome as a clinical feature in brainstem encephalitis (BE). Finding an especially high prevalence of AP syndrome in Bickerstaff brainstem encephalitis (BBE), we also analyzed the frequency of AP syndrome in other autoimmune diseases with anti-ganglioside antibodies (Guillain-Barré syndrome (GBS) and its variants). Methods We systematically evaluated the prevalence of AP syndrome in BE in all patients treated at our university hospital during a 15-year period. In a second step, BBE patients were compared to GBS and Miller Fisher syndrome (MFS) patients as clinical subtypes of a disease continuum without brainstem dysfunction. Results We found AP syndrome in 8 of 21 BE patients, including 3 of 7 BBE and in 4 of 112 GBS/MFS patients. AP syndrome was as a frequent but under-recognized feature of BE with a significant impact on patients' well being. Interpretation Manifestation of AP syndrome in BBE but also in GBS and its subtypes point toward a role of autoimmune antibodies that should be investigated in future studies. Considerable misdiagnosis or nonrecognition complicates diagnostic and therapeutic management. Therefore, AP syndrome should be considered in any episode of otherwise unexplained nausea, emesis, or singultus.
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Affiliation(s)
- Pia S Zeiner
- Department of Neurology University Hospital/Goethe University Frankfurt Schleusenweg 2-16 Frankfurt/Main 60528 Germany.,Dr. Senckenberg Institute of Neurooncology University Hospital/Goethe University Frankfurt Heinrich-Hoffmann-Strasse 7 Frankfurt/Main 60528 Germany
| | - Annemarie Brandhofe
- Department of Neurology University Hospital/Goethe University Frankfurt Schleusenweg 2-16 Frankfurt/Main 60528 Germany
| | - Monika Müller-Eschner
- Institute of Neuroradiology University Hospital/Goethe University Frankfurt Schleusenweg 2-16 Frankfurt/Main 60528 Germany
| | - Helmuth Steinmetz
- Department of Neurology University Hospital/Goethe University Frankfurt Schleusenweg 2-16 Frankfurt/Main 60528 Germany
| | - Waltraud Pfeilschifter
- Department of Neurology University Hospital/Goethe University Frankfurt Schleusenweg 2-16 Frankfurt/Main 60528 Germany
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17
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Tobias F, Olson MT, Cologna SM. Mass spectrometry imaging of lipids: untargeted consensus spectra reveal spatial distributions in Niemann-Pick disease type C1. J Lipid Res 2018; 59:2446-2455. [PMID: 30266834 DOI: 10.1194/jlr.d086090] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 09/24/2018] [Indexed: 12/12/2022] Open
Abstract
Mass spectrometry imaging (MSI) is a tool to rapidly map the spatial location of analytes without the need for tagging or a reporter system. Niemann-Pick disease type C1 (NPC1) is a neurodegenerative, lysosomal storage disorder characterized by accumulation of unesterified cholesterol and sphingolipids in the endo-lysosomal system. Here, we use MSI to visualize lipids including cholesterol in cerebellar brain tissue from the NPC1 symptomatic mouse model and unaffected controls. To complement the imaging studies, a data-processing pipeline was developed to generate consensus mass spectra, thereby using both technical and biological image replicates to assess differences. The consensus spectra are used to determine true differences in lipid relative abundance; lipid distributions can be determined in an unbiased fashion without prior knowledge of location. We show the cerebellar distribution of gangliosides GM1, GM2, and GM3, including variants of lipid chain length. We also performed MALDI-MSI of cholesterol. Further analysis of lobules IV/V and X of the cerebellum gangliosides indicates regional differences. The specificity achieved highlights the power of MSI, and this new workflow demonstrates a universal approach for addressing reproducibility in imaging experiments applied to NPC1.
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Affiliation(s)
- Fernando Tobias
- Department of Chemistry University of Illinois at Chicago, Chicago, IL 60607
| | - Matthew T Olson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Jacksonville, FL 32224
| | - Stephanie M Cologna
- Department of Chemistry University of Illinois at Chicago, Chicago, IL 60607 .,Laboratory of Integrative Neuroscience, University of Illinois at Chicago, Chicago, IL 60607
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18
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Ucal Y, Ozpinar A. Improved spectra for MALDI MSI of peptides using ammonium phosphate monobasic in MALDI matrix. JOURNAL OF MASS SPECTROMETRY : JMS 2018; 53:635-648. [PMID: 29745432 DOI: 10.1002/jms.4198] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 04/19/2018] [Accepted: 04/25/2018] [Indexed: 05/03/2023]
Abstract
MALDI mass spectrometry imaging (MSI) enables analysis of peptides along with histology. However, there are several critical steps in MALDI MSI of peptides, 1 of which is spectral quality. Suppression of MALDI matrix clusters by the aid of ammonium salts in MALDI experiments is well known. It is asserted that addition of ammonium salts dissociates potential matrix adducts and thereafter decreases matrix cluster formation. Consequently, MALDI MS sensitivity and mass accuracy increase. Up to our knowledge, a limited number of MALDI MSI studies used ammonium salts as matrix additives to suppress matrix clusters and enhance peptide signals. In this work, we investigated the effect of ammonium phosphate monobasic (AmP) as alpha-cyano-4-hydroxycinnamic acid (α-CHCA) matrix additive in MALDI MSI of peptides. Prior to MALDI MSI, the effect of varying concentrations of AmP in α-CHCA was assessed in bovine serum albumin tryptic digests and compared with the control (α-CHCA without AmP). Based on our data, the addition of AmP as matrix additive decreased matrix cluster formation regardless of its concentration, and specifically, 8 mM AmP and 10 mM AmP increased bovine serum albumin peptide signal intensities. In MALDI MSI of peptides, both 8 and 10 mM AmP in α-CHCA improved peptide signals especially in the mass range of m/z 2000 to 3000. In particular, 9 peptide signals were found to have differential intensities within the tissues deposited with AmP in α-CHCA (AUC > 0.60). To the best of our knowledge, this is the first MALDI MSI of peptides work investigating different concentrations of AmP as α-CHCA matrix additive to enhance peptide signals in formalin-fixed paraffin-embedded (FFPE) tissues. Further, AmP as part of α-CHCA matrix could enhance protein identifications and support MALDI MSI-based proteomic approaches.
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Affiliation(s)
- Yasemin Ucal
- School of Medicine, Department of Medical Biochemistry, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Aysel Ozpinar
- School of Medicine, Department of Medical Biochemistry, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
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19
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Jackson SN, Muller L, Roux A, Oktem B, Moskovets E, Doroshenko VM, Woods AS. AP-MALDI Mass Spectrometry Imaging of Gangliosides Using 2,6-Dihydroxyacetophenone. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2018; 29:1463-1472. [PMID: 29549666 PMCID: PMC7549319 DOI: 10.1007/s13361-018-1928-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 02/02/2018] [Accepted: 02/03/2018] [Indexed: 05/04/2023]
Abstract
Matrix-assisted laser/desorption ionization (MALDI) mass spectrometry imaging (MSI) is widely used as a unique tool to record the distribution of a large range of biomolecules in tissues. 2,6-Dihydroxyacetophenone (DHA) matrix has been shown to provide efficient ionization of lipids, especially gangliosides. The major drawback for DHA as it applies to MS imaging is that it sublimes under vacuum (low pressure) at the extended time necessary to complete both high spatial and mass resolution MSI studies of whole organs. To overcome the problem of sublimation, we used an atmospheric pressure (AP)-MALDI source to obtain high spatial resolution images of lipids in the brain using a high mass resolution mass spectrometer. Additionally, the advantages of atmospheric pressure and DHA for imaging gangliosides are highlighted. The imaging of [M-H]- and [M-H2O-H]- mass peaks for GD1 gangliosides showed different distribution, most likely reflecting the different spatial distribution of GD1a and GD1b species in the brain. Graphical Abstract ᅟ.
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Affiliation(s)
- Shelley N Jackson
- Integrative Neuroscience, NIDA IRP, NIH, 333 Cassell Drive, Room 1119, Baltimore, MD, 21224, USA.
| | - Ludovic Muller
- Integrative Neuroscience, NIDA IRP, NIH, 333 Cassell Drive, Room 1119, Baltimore, MD, 21224, USA
| | - Aurelie Roux
- Integrative Neuroscience, NIDA IRP, NIH, 333 Cassell Drive, Room 1119, Baltimore, MD, 21224, USA
| | | | | | | | - Amina S Woods
- Integrative Neuroscience, NIDA IRP, NIH, 333 Cassell Drive, Room 1119, Baltimore, MD, 21224, USA
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20
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Podolskaya EP, Serebryakova MV, Krasnov KA, Grachev SA, Gzgzyan AM, Sukhodolov NG. Application of Langmuir–Blodgett technology for the analysis of saturated fatty acids using the MALDI-TOF mass spectrometry. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.05.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Sonnino S, Chiricozzi E, Grassi S, Mauri L, Prioni S, Prinetti A. Gangliosides in Membrane Organization. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2018; 156:83-120. [PMID: 29747825 DOI: 10.1016/bs.pmbts.2017.12.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Since the structure of GM1 was elucidated 55years ago, researchers have been attracted by the sialylated glycans of gangliosides. Gangliosides head groups, protruding toward the extracellular space, significantly contribute to the cell glycocalyx; and in certain cells, such as neurons, are major determinants of the features of the cell surface. Expression of glycosyltransferases involved in the de novo biosynthesis of gangliosides is tightly regulated along cell differentiation and activation, and is regarded as the main metabolic mechanism responsible for the acquisition of cell-specific ganglioside patterns. The resulting sialooligosaccharides are characterized by a high degree of geometrical complexity and by highly dynamic properties, which seem to be functional for complex interactions with other molecules sitting on the same cellular membrane (cis-interactions) or soluble molecules present in the extracellular environment, or molecules associated with the surface of other cells (trans-interactions). There is no doubt that the multifaceted biological functions of gangliosides are largely dependent on oligosaccharide-mediated molecular interactions. However, gangliosides are amphipathic membrane lipids, and their chemicophysical, aggregational, and, consequently, biological properties are dictated by the properties of the monomers as a whole, which are not merely dependent on the structures of their polar head groups. In this chapter, we would like to focus on the peculiar chemicophysical features of gangliosides (in particular, those of the nervous system), that represent an important driving force determining the organization and properties of cellular membranes, and to emphasize the causal connections between altered ganglioside-dependent membrane organization and relevant pathological conditions.
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22
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Abstract
Matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI-IMS) is a histological method used for various molecules including gangliosides. The method is based on mass spectrometry, and thus target molecules with small structural differences are directly and independently detected. Here we describe a general procedure and related key notes for analyzing major brain gangliosides by MALDI-IMS.
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Affiliation(s)
- Eiji Sugiyama
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Mitsutoshi Setou
- International Mass Imaging Center and Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, Shizuoka, Japan.
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23
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Abstract
This review begins by attempting to recount some of the pioneering discoveries that first identified the presence of gangliosides in the nervous system, their structures and topography. This is presented as prelude to the current emphasis on physiological function, about which much has been learned but still remains to be elucidated. These areas include ganglioside roles in nervous system development including stem cell biology, membranes and organelles within neurons and glia, ion transport mechanisms, receptor modulation including neurotrophic factor receptors, and importantly the pathophysiological role of ganglioside aberrations in neurodegenerative disorders. This relates to their potential as therapeutic agents, especially in those conditions characterized by deficiency of one or more specific gangliosides. Finally we attempt to speculate on future directions ganglioside research is likely to take so as to capitalize on the impressive progress to date.
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Affiliation(s)
- Robert Ledeen
- Division of Neurochemistry, Department of Pharmacology, Physiology & Neuroscience, Rutgers New Jersey Medical School, Newark, NJ, USA.
| | - Gusheng Wu
- Division of Neurochemistry, Department of Pharmacology, Physiology & Neuroscience, Rutgers New Jersey Medical School, Newark, NJ, USA
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24
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2011-2012. MASS SPECTROMETRY REVIEWS 2017; 36:255-422. [PMID: 26270629 DOI: 10.1002/mas.21471] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
Abstract
This review is the seventh update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2012. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, and fragmentation are covered in the first part of the review and applications to various structural types constitute the remainder. The main groups of compound are oligo- and poly-saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2015 Wiley Periodicals, Inc. Mass Spec Rev 36:255-422, 2017.
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Affiliation(s)
- David J Harvey
- Department of Biochemistry, Oxford Glycobiology Institute, University of Oxford, Oxford, OX1 3QU, UK
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25
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Lu J, Yao XQ, Luo X, Wang Y, Chung SK, Tang HX, Cheung CW, Wang XY, Meng C, Li Q. Monosialoganglioside 1 may alleviate neurotoxicity induced by propofol combined with remifentanil in neural stem cells. Neural Regen Res 2017; 12:945-952. [PMID: 28761428 PMCID: PMC5514870 DOI: 10.4103/1673-5374.208589] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Monosialoganglioside 1 (GM1) is the main ganglioside subtype and has neuroprotective properties in the central nervous system. In this study, we aimed to determine whether GM1 alleviates neurotoxicity induced by moderate and high concentrations of propofol combined with remifentanil in the immature central nervous system. Hippocampal neural stem cells were isolated from newborn Sprague-Dawley rats and treated with remifentanil (5, 10, 20 ng/mL) and propofol (1.0, 2.5, 5.0 μg/mL), and/or GM1 (12.5, 25, 50 μg/mL). GM1 reversed combined propofol and remifentanil-induced decreases in the percentage of 5-bromodeoxyuridine(+) cells and also reversed the increase in apoptotic cell percentage during neural stem cell proliferation and differentiation. However, GM1 with combined propofol and remifentanil did not affect β-tubulin(+) or glial fibrillary acidic protein(+) cell percentage during neural stem cell differentiation. In conclusion, we show that GM1 alleviates the damaging effects of propofol combined with remifentanil at moderate and high exposure concentrations in neural stem cells in vitro, and exerts protective effects on the immature central nervous system.
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Affiliation(s)
- Jiang Lu
- Anesthesiology Research Institute of Hubei University of Medicine, Shiyan, Hubei Province, China.,Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Xue-Qin Yao
- Anesthesiology Research Institute of Hubei University of Medicine, Shiyan, Hubei Province, China.,Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Xin Luo
- Department of Anesthesiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Laboratory and Clinical Research Institute for Pain, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Yu Wang
- Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Sookja Kim Chung
- Department of Anatomy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - He-Xin Tang
- Anesthesiology Research Institute of Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Chi Wai Cheung
- Anesthesiology Research Institute of Hubei University of Medicine, Shiyan, Hubei Province, China.,Department of Anesthesiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China.,Laboratory and Clinical Research Institute for Pain, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Xian-Yu Wang
- Anesthesiology Research Institute of Hubei University of Medicine, Shiyan, Hubei Province, China.,Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Chen Meng
- Anesthesiology Research Institute of Hubei University of Medicine, Shiyan, Hubei Province, China.,Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
| | - Qing Li
- Anesthesiology Research Institute of Hubei University of Medicine, Shiyan, Hubei Province, China.,Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei Province, China
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26
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Karlsson O, Michno W, Ransome Y, Hanrieder J. MALDI imaging delineates hippocampal glycosphingolipid changes associated with neurotoxin induced proteopathy following neonatal BMAA exposure. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2016; 1865:740-746. [PMID: 27956354 DOI: 10.1016/j.bbapap.2016.12.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 12/05/2016] [Accepted: 12/08/2016] [Indexed: 11/16/2022]
Abstract
The environmental toxin β-N-methylamino-L-alanine (BMAA) has been proposed to contribute to neurodegenerative diseases. We have previously shown that neonatal exposure to BMAA results in dose-dependent cognitive impairments, proteomic alterations and progressive neurodegeneration in the hippocampus of adult rats. A high BMAA dose (460mg/kg) also induced intracellular fibril formation, increased protein ubiquitination and enrichment of proteins important for lipid transport and metabolism. The aim of this study was therefore to elucidate the role of neuronal lipids in BMAA-induced neurodegeneration. By using matrix assisted laser desorption/ionization imaging mass spectrometry (MALDI IMS), we characterized the spatial lipid profile in the hippocampus of six month-old rats that were treated neonatally (postnatal days 9-10) with 460mg/kg BMAA. Multivariate statistical analysis revealed long-term changes in distinct ganglioside species (GM, GD, GT) in the dentate gyrus. These changes could be a consequence of direct effects on ganglioside biosynthesis through the b-series (GM3-GD3-GD2-GD1b-GT1b) and may be linked to astrogliosis. Complementary immunohistochemistry experiments towards GFAP and S100β further verified the role of increased astrocyte activity in BMAA-induced brain damage. This highlights the potential of imaging MS for probing chemical changes associated with neuropathological mechanisms in situ. This article is part of a Special Issue entitled: MALDI Imaging, edited by Dr. Corinna Henkel and Prof. Peter Hoffmann.
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Affiliation(s)
- Oskar Karlsson
- Center for Molecular Medicine, Department of Clinical Neuroscience, Karolinska Institute, 171 76 Stockholm, Sweden; Department of Pharmaceutical Biosciences, Toxicology and Drug Safety, Uppsala University, Box 591, 751 24 Uppsala, Sweden; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Wojciech Michno
- Department of Psychiatry and Neurochemistry, Sahlgrenska Academy at the University of Gothenburg, Mölndal Hospital, House V, 431 80 Mölndal, Sweden
| | - Yusuf Ransome
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
| | - Jörg Hanrieder
- Department of Psychiatry and Neurochemistry, Sahlgrenska Academy at the University of Gothenburg, Mölndal Hospital, House V, 431 80 Mölndal, Sweden; Department of Chemistry and Chemical Engineering, Analytical Chemistry, Chalmers University of Technology, Kemivägen 10, 412 96 Gothenburg, Sweden; Department of Molecular Neuroscience, UCL Institute of Neurology, University College London, Queen Square, WC1N 3BG London, UK.
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27
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Vens-Cappell S, Kouzel IU, Kettling H, Soltwisch J, Bauwens A, Porubsky S, Müthing J, Dreisewerd K. On-Tissue Phospholipase C Digestion for Enhanced MALDI-MS Imaging of Neutral Glycosphingolipids. Anal Chem 2016; 88:5595-9. [PMID: 27212679 DOI: 10.1021/acs.analchem.6b01084] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) can be used to simultaneously visualize the lateral distribution of different lipid classes in tissue sections, but the applicability of the method to real-life samples is often limited by ion suppression effects. In particular, the presence of abundant phosphatidylcholines (PCs) can reduce the ion yields for all other lipid species in positive ion mode measurements. Here, we used on-tissue treatment with buffer-free phospholipase C (PLC) to near-quantitatively degrade PCs in fresh-frozen tissue sections. The ion signal intensities of mono-, di-, and oligohexosylceramides were enhanced by up to 10-fold. In addition, visualization of Shiga toxin receptor globotriaosylceramide (Gb3Cer) in the kidneys of wild-type and α-galactosidase A-knockout (Fabry) mice was possible at about ten micrometer resolution. Importantly, the PLC treatment did not decrease the high lateral resolution of the MS imaging analysis.
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Affiliation(s)
- Simeon Vens-Cappell
- Institute for Hygiene, University of Münster , 48149 Münster, Germany.,Interdisciplinary Center for Clinical Research (IZKF), University of Münster , 48149 Münster, Germany
| | - Ivan U Kouzel
- Institute for Hygiene, University of Münster , 48149 Münster, Germany.,Interdisciplinary Center for Clinical Research (IZKF), University of Münster , 48149 Münster, Germany
| | - Hans Kettling
- Institute for Hygiene, University of Münster , 48149 Münster, Germany.,Interdisciplinary Center for Clinical Research (IZKF), University of Münster , 48149 Münster, Germany
| | - Jens Soltwisch
- Institute for Hygiene, University of Münster , 48149 Münster, Germany
| | - Andreas Bauwens
- Institute for Hygiene, University of Münster , 48149 Münster, Germany
| | - Stefan Porubsky
- Institute of Pathology Mannheim, University of Heidelberg , 68167 Mannheim, Germany.,Cellular and Molecular Pathology, German Cancer Research Center, DKFZ , 69120 Heidelberg, Germany
| | - Johannes Müthing
- Institute for Hygiene, University of Münster , 48149 Münster, Germany.,Interdisciplinary Center for Clinical Research (IZKF), University of Münster , 48149 Münster, Germany
| | - Klaus Dreisewerd
- Institute for Hygiene, University of Münster , 48149 Münster, Germany.,Interdisciplinary Center for Clinical Research (IZKF), University of Münster , 48149 Münster, Germany
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28
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Zhang Y, Wang J, Liu J, Han J, Xiong S, Yong W, Zhao Z. Combination of ESI and MALDI mass spectrometry for qualitative, semi-quantitative and in situ analysis of gangliosides in brain. Sci Rep 2016; 6:25289. [PMID: 27142336 PMCID: PMC4855142 DOI: 10.1038/srep25289] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 04/14/2016] [Indexed: 01/04/2023] Open
Abstract
Gangliosides are a family of complex lipids that are abundant in the brain. There is no doubt the investigations about the distribution of gangliosides in brian and the relationship between gangliosides and Alzheimer’s disease is profound. However, these investigations are full of challenges due to the structural complexity of gangliosides. In this work, the method for efficient extraction and enrichment of gangliosides from brain was established. Moreover, the distribution of gangliosides in brain was obtained by matrix-assisted laser desorption ionization (MALDI) mass spectrometry imaging (MSI). It was found that 3-aminoquinoline (3-AQ) as matrix was well-suited for MALDI MS analysis of gangliosides in negative ion mode. In addition, the pretreatment by ethanol (EtOH) cleaning brain section and the addition of ammonium formate greatly improved the MS signal of gangliosides in the brain section when MALDI MSI analysis was employed. The distribution of ganliosides in cerebral cortex, hippocampus and cerebellum was respectively acquired by electrospray ionization (ESI) MS and MALDI MSI, and the data were compared for reliability evaluation of MALDI MSI. Further, applying MALDI MSI technology, the distribution of gangliosides in amyloid precursor protein transgenic mouse brain was obtained, which may provide a new insight for bioresearch of Alzheimer’s disease (AD).
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Affiliation(s)
- Yangyang Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China
| | - Jun Wang
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences &Peking Union Medical College, Beijing, China
| | - Jian'an Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China
| | - Juanjuan Han
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China
| | - Shaoxiang Xiong
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China
| | - Weidong Yong
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences &Peking Union Medical College, Beijing, China
| | - Zhenwen Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry Chinese Academy of Sciences, Beijing Mass Spectrum Center, Beijing, China.,Graduate School, University of Chinese Academy of Sciences, Beijing, China
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29
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Sonnino S, Prinetti A. The role of sphingolipids in neuronal plasticity of the brain. J Neurochem 2016; 137:485-8. [PMID: 26990419 DOI: 10.1111/jnc.13589] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 02/17/2016] [Accepted: 02/18/2016] [Indexed: 12/13/2022]
Abstract
This Editorial highlights a study by Müller et al. in which the authors suggest a new sphingolipid-dependent mechanism for behavioral extinction. Their study should be considered in the broad perspective of sphingolipid metabolic pathways and traffic (depicted in the graphic). Read the highlighted article 'A sphingolipid mechanism for behavioral extinction' on page 589.
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Affiliation(s)
- Sandro Sonnino
- Department of Medical Biotechnology and Translational Medicine, The Medical School, University of Milano, Milano, Italy
| | - Alessandro Prinetti
- Department of Medical Biotechnology and Translational Medicine, The Medical School, University of Milano, Milano, Italy
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30
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Sugiyama E, Masaki N, Matsushita S, Setou M. Ammonium Sulfate Improves Detection of Hydrophilic Quaternary Ammonium Compounds through Decreased Ion Suppression in Matrix-Assisted Laser Desorption/Ionization Imaging Mass Spectrometry. Anal Chem 2015; 87:11176-81. [DOI: 10.1021/acs.analchem.5b02672] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Eiji Sugiyama
- Department
of Cell Biology
and Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku Hamamatsu, Shizuoka, 431-3192, Japan
| | - Noritaka Masaki
- Department
of Cell Biology
and Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku Hamamatsu, Shizuoka, 431-3192, Japan
| | - Shoko Matsushita
- Department
of Cell Biology
and Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku Hamamatsu, Shizuoka, 431-3192, Japan
| | - Mitsutoshi Setou
- Department
of Cell Biology
and Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku Hamamatsu, Shizuoka, 431-3192, Japan
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31
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Hirano-Sakamaki W, Sugiyama E, Hayasaka T, Ravid R, Setou M, Taki T. Alzheimer's disease is associated with disordered localization of ganglioside GM1 molecular species in the human dentate gyrus. FEBS Lett 2015; 589:3611-6. [PMID: 26484596 DOI: 10.1016/j.febslet.2015.09.033] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 09/19/2015] [Accepted: 09/23/2015] [Indexed: 10/22/2022]
Abstract
Alzheimer's disease (AD) is a progressive dementia associated with loss of memory and cognitive dysfunction. In a previous study, we demonstrated a decrease in b-series gangliosides along with a change in ganglioside molecular species in the hippocampal grey matter of patients with AD. The present study demonstrates the use of imaging mass spectrometry for analyzing the spatial arrangement of ganglioside GM1 (GM1) molecular species in the hippocampus. In AD patients, we found a decrease in the ratio of GM1(d20:1/C18:0) to GM1 d18:1/C18:0) in the outer molecular layer (ML) of the dentate gyrus. Because the outer ML is the region of main input into the hippocampus, our findings may have a direct relationship to the mechanism of dysfunction in AD.
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Affiliation(s)
- Wakako Hirano-Sakamaki
- Third Institute of New Drug Discovery, Otsuka Pharmaceutical Co. Ltd., 463-10 Kagasuno, Kawauchi-cho, Tokushima 771-0192, Japan.
| | - Eiji Sugiyama
- Department of Cell Biology and Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Takahiro Hayasaka
- Faculty of Health Sciences, Hokkaido University, Kita-12, Nishi-5, Sapporo 060-0812, Japan
| | - Rivka Ravid
- Brain Bank Consultants, Meibergdreef 1105 AZ, Amsterdam, The Netherlands
| | - Mitsutoshi Setou
- Department of Cell Biology and Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Takao Taki
- Tokushima Institute, Otsuka Pharmaceutical Co. Ltd., 463-10 Kagasuno, Kawauchi-cho, Tokushima 771-0192, Japan
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32
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Park W, Lee D, Cha S. Differentiation of Ganglioside Isomers by MALDI Tandem Mass Spectrometry with Alkali Earth Metal Additives. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Woojin Park
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin 449-791 Korea
| | - Dongkun Lee
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin 449-791 Korea
| | - Sangwon Cha
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin 449-791 Korea
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33
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Otsuka Y, Naito J, Satoh S, Kyogaku M, Hashimoto H, Arakawa R. Imaging mass spectrometry of a mouse brain by tapping-mode scanning probe electrospray ionization. Analyst 2015; 139:2336-41. [PMID: 24683596 DOI: 10.1039/c3an02340k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Methods for ambient sampling and ionization enable chemical information to be obtained with minimal sample preparation. Also, imaging mass spectrometry (IMS) enables the spatial distribution of multiple components to be determined by a single measurement. Here, we report an improved method of tapping-mode scanning probe electrospray ionization (t-SPESI) for ambient sampling and ionization in which probe oscillation is stabilized by using a piezo actuator. We demonstrate negative-mode IMS of a mouse coronal brain section and show that, compared with desorption electrospray ionization, t-SPESI provides unique features in the mass spectra: signal enhancement of fatty acid and lipids, and formation of multivalent ions tentatively assigned to gangliosides. These results would indicate the capability for the generation of multiple types of ions with t-SPESI.
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Affiliation(s)
- Yoichi Otsuka
- Frontier Research Center, Canon Inc., 30-2 Shimomaruko 3-chome, Ohta-ku, Tokyo 146-8501, Japan.
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34
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Schengrund CL. Gangliosides: glycosphingolipids essential for normal neural development and function. Trends Biochem Sci 2015; 40:397-406. [DOI: 10.1016/j.tibs.2015.03.007] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 03/17/2015] [Accepted: 03/18/2015] [Indexed: 11/25/2022]
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35
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Lee D, Cha S. 5-Methoxysalicylic acid matrix for ganglioside analysis with matrix-assisted laser desorption/ionization mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2015; 26:522-525. [PMID: 25503079 DOI: 10.1007/s13361-014-1037-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 10/22/2014] [Accepted: 10/26/2014] [Indexed: 06/04/2023]
Abstract
In this note, we report that high quality ganglioside profiles with minimal loss of sialic acid residues can be obtained in the positive ion mode by using a 5-methoxysalicylic acid (MSA) matrix for matrix-assisted laser desorption/ionization (MALDI) mass spectrometry (MS). Our results showed that MSA produced much less sialic acid losses from gangliosides than DHB, although MSA and DHB are differ only by their functional groups at their 5-positions (-OH for DHB and -OCH(3) for MSA). Furthermore, our data also demonstrated that addition of an alkali metal additive was effective for simplifying ganglioside profiles, but not necessary for stabilizing glycosidic bonds of gangliosides if MSA was used as a matrix. This suggests that MALDI MS with MSA has a potential to gain additional benefits from the positive-ion mode analyses without losing performance in ganglioside profiling.
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Affiliation(s)
- Dongkun Lee
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin, 449-791, Korea
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36
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Muller L, Kailas A, Jackson SN, Roux A, Barbacci DC, Schultz JA, Balaban CD, Woods AS. Lipid imaging within the normal rat kidney using silver nanoparticles by matrix-assisted laser desorption/ionization mass spectrometry. Kidney Int 2015; 88:186-92. [PMID: 25671768 PMCID: PMC4527327 DOI: 10.1038/ki.2015.3] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 11/24/2014] [Accepted: 12/05/2014] [Indexed: 02/07/2023]
Abstract
The well-characterized cellular and structural components of the kidney show distinct regional compositions and distribution of lipids. In order to more fully analyze the renal lipidome we developed a matrix-assisted laser desorption/ionization mass spectrometry approach for imaging that may be used to pinpoint sites of changes from normal in pathological conditions. This was accomplished by implanting sagittal cryostat rat kidney sections with a stable, quantifiable and reproducible uniform layer of silver using a magnetron sputtering source to form silver nanoparticles. Thirty-eight lipid species including seven ceramides, eight diacylglycerols, 22 triacylglycerols, and cholesterol were detected and imaged in positive ion mode. Thirty-six lipid species consisting of seven sphingomyelins, 10 phosphatidylethanolamines, one phosphatidylglycerol, seven phosphatidylinositols, and 11 sulfatides were imaged in negative ion mode for a total of seventy-four high-resolution lipidome maps of the normal kidney. Thus, our approach is a powerful tool not only for studying structural changes in animal models of disease, but also for diagnosing and tracking stages of disease in human kidney tissue biopsies.
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Affiliation(s)
- Ludovic Muller
- 1] Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland, USA [2] Departments of Otolaryngology, Neurobiology, Communication Sciences & Disorders, and Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Ajay Kailas
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland, USA
| | | | - Aurelie Roux
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland, USA
| | - Damon C Barbacci
- 1] Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland, USA [2] Ionwerks, Houston, Texas, USA
| | | | - Carey D Balaban
- Departments of Otolaryngology, Neurobiology, Communication Sciences & Disorders, and Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Amina S Woods
- Structural Biology Unit, NIDA IRP, NIH, Baltimore, Maryland, USA
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37
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Junot C, Fenaille F, Colsch B, Bécher F. High resolution mass spectrometry based techniques at the crossroads of metabolic pathways. MASS SPECTROMETRY REVIEWS 2014; 33:471-500. [PMID: 24288070 DOI: 10.1002/mas.21401] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 05/14/2013] [Accepted: 05/15/2013] [Indexed: 06/02/2023]
Abstract
The metabolome is the set of small molecular mass compounds found in biological media, and metabolomics, which refers to as the analysis of metabolome in a given biological condition, deals with the large scale detection and quantification of metabolites in biological media. It is a data driven and multidisciplinary approach combining analytical chemistry for data acquisition, and biostatistics, informatics and biochemistry for mining and interpretation of these data. Since the middle of the 2000s, high resolution mass spectrometry is widely used in metabolomics, mainly because the detection and identification of metabolites are improved compared to low resolution instruments. As the field of HRMS is quickly and permanently evolving, the aim of this work is to review its use in different aspects of metabolomics, including data acquisition, metabolite annotation, identification and quantification. At last, we would like to show that, thanks to their versatility, HRMS instruments are the most appropriate to achieve optimal metabolome coverage, at the border of other omics fields such as lipidomics and glycomics.
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Affiliation(s)
- Christophe Junot
- Commissariat à l'Energie Atomique, Centre de Saclay, DSV/iBiTec-S/SPI, Laboratoire d'Etude du Métabolisme des Médicaments, 91191, Gif-sur-Yvette Cedex, France
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38
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Kettling H, Vens-Cappell S, Soltwisch J, Pirkl A, Haier J, Müthing J, Dreisewerd K. MALDI Mass Spectrometry Imaging of Bioactive Lipids in Mouse Brain with a Synapt G2-S Mass Spectrometer Operated at Elevated Pressure: Improving the Analytical Sensitivity and the Lateral Resolution to Ten Micrometers. Anal Chem 2014; 86:7798-805. [DOI: 10.1021/ac5017248] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hans Kettling
- Institute
for Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
- Interdisciplinary
Center for Clinical Research (IZKF) Münster, University of Münster, Domagkstr. 3, 48149 Münster, Germany
| | - Simeon Vens-Cappell
- Institute
for Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
- Interdisciplinary
Center for Clinical Research (IZKF) Münster, University of Münster, Domagkstr. 3, 48149 Münster, Germany
| | - Jens Soltwisch
- Institute
for Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
| | - Alexander Pirkl
- Institute
for Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
| | - Jörg Haier
- Comprehensive
Cancer Center Münster, University Hospital Münster, Waldeyerstr. 1, 48149 Münster, Germany
| | - Johannes Müthing
- Institute
for Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
| | - Klaus Dreisewerd
- Institute
for Hygiene, University of Münster, Robert-Koch-Str. 41, 48149 Münster, Germany
- Interdisciplinary
Center for Clinical Research (IZKF) Münster, University of Münster, Domagkstr. 3, 48149 Münster, Germany
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39
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Jackson SN, Barbacci D, Egan T, Lewis EK, Schultz JA, Woods AS. MALDI-Ion Mobility Mass Spectrometry of Lipids in Negative Ion Mode. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2014; 6:5001-5007. [PMID: 24999374 PMCID: PMC4078893 DOI: 10.1039/c4ay00320a] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Profiling and imaging MALDI mass spectrometry (MS) allows detection and localization of biomolecules in tissue, of which lipids are a major component. However, due to the in situ nature of this technique, complexity of tissue and need for a chemical matrix, the recorded signal is complex and can be difficult to assign. Ion mobility adds a dimension that provides coarse shape information, separating isobaric lipids, peptides, and oligonucleotides along distinct familial trend lines before mass analysis. Previous work using MALDI-ion mobility mass spectrometry to analyze and image lipids has been conducted mainly in positive ion mode, although several lipid classes ionize preferentially in negative ion mode. This work highlights recent data acquired in negative ion mode to detect glycerophosphoethanolamines (PEs), glycerophosphoserines (PSs), glycerophosphoglycerols (PGs), glycerolphosphoinositols (PIs), glycerophosphates (PAs), sulfatides (STs), and gangliosides from standard tissue extracts and directly from mouse brain tissue. In particular, this study focused on changes in ion mobility based upon lipid head groups, composition of radyl chain (# of carbons and double bonds), diacyl versus plasmalogen species, and hydroxylation of species. Finally, a MALDI-ion mobility imaging run was conducted in negative ion mode, resulting in the successful ion mapping of several lipid species.
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Affiliation(s)
| | - Damon Barbacci
- Integrative Neuroscience, NIDA IRP, NIH, Baltimore, MD 21224, USA
- Ionwerks Inc., Houston, Texas, USA
| | | | | | | | - Amina S. Woods
- Integrative Neuroscience, NIDA IRP, NIH, Baltimore, MD 21224, USA
- Corresponding Author: Amina S. Woods, Ph.D., NIDA IRP, NIH, 333 Cassell Drive, Room 1120, Baltimore, MD 21224, Tel: 443-740-2747, Fax: 443-740-2144,
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40
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Amoscato AA, Sparvero LJ, He RR, Watkins S, Bayir H, Kagan VE. Imaging mass spectrometry of diversified cardiolipin molecular species in the brain. Anal Chem 2014; 86:6587-95. [PMID: 24949523 PMCID: PMC4082390 DOI: 10.1021/ac5011876] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 06/10/2014] [Indexed: 01/08/2023]
Abstract
MALDI imaging mass spectrometry (MALDI-IMS) has been used successfully in mapping different lipids in tissue sections, yet existing protocols fail to detect the diverse species of mitochondria-unique cardiolipins (CLs) in the brain which are essential for cellular and mitochondrial physiology. We have developed methods enabling the imaging of individual CLs in brain tissue. This was achieved by eliminating ion suppressive effects by (i) cross-linking carboxyl/amino containing molecules on tissue with 1-ethyl-3-[3-(dimethylamino)propyl]-carbodiimide hydrochloride and (ii) removing highly abundant phosphatidylcholine head groups via phospholipase C treatment. These treatments allowed the detection of CL species at 100 μm resolution and did not affect the amount or molecular species distribution of brain tissue CLs. When combined with augmented matrix application, these modifications allowed the visualization and mapping of multiple CL species in various regions of the brain including the thalamus, hippocampus, and cortex. Areas such as the dentate and stratum radiatum exhibited higher CL signals than other areas within the hippocampal formation. The habenular nuclear (Hb)/dorsal third ventricle (D3 V) and lateral ventricle (LV) areas were identified as CL "hot spots". Our method also allowed structural MS/MS fragmentation and mapping of CLs with identified fatty acid residues and demonstrated a nonrandom distribution of individual oxidizable (polyunsaturated fatty acid containing) and nonoxidizable (nonpolyunsaturated containing) CLs in different anatomical areas of the brain. To our knowledge, this method is the first label-free approach for molecular mapping of diversified CLs in brain tissue.
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Affiliation(s)
- A. A. Amoscato
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
| | - L. J. Sparvero
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
| | - R. R. He
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
- Pharmacy
College, Jinan University, Guangzhou, Guangdong 510632, China
| | - S. Watkins
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
| | - H. Bayir
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
| | - V. E. Kagan
- Department
of Environmental and Occupational Health, Center for Free Radical and Antioxidant
Health, Department of Critical Care Medicine and Safar Center for Resuscitation
Research, and Department of Cell Biology, University
of Pittsburgh, Pittsburgh, Pennsylvania 15219, United States
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41
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42
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Ferguson CN, Fowler JWM, Waxer JF, Gatti RA, Loo JA. Mass spectrometry-based tissue imaging of small molecules. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 806:283-99. [PMID: 24952187 DOI: 10.1007/978-3-319-06068-2_12] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mass spectrometry imaging (MSI) of tissue samples is a promising analytical tool that has quickly become associated with biomedical and pharmacokinetic studies. It eliminates several labor-intensive protocols associated with more classical imaging techniques and provides accurate histological data at a rapid pace. Because mass spectrometry is used as the readout, MSI can be applied to almost any molecule, especially those that are biologically relevant. Many examples of its utility in the study of peptides and proteins have been reported; here we discuss its value in the mass range of small molecules. We explore its success and potential in the analysis of lipids, medicinals, and metal-based compounds by featuring representative studies from MSI laboratories around the globe.
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Affiliation(s)
- Carly N Ferguson
- Department of Chemistry and Biochemistry, University of California-Los Angeles, Los Angeles, CA, 90095, USA
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43
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Jackson SN, Baldwin K, Muller L, Womack VM, Schultz JA, Balaban C, Woods AS. Imaging of lipids in rat heart by MALDI-MS with silver nanoparticles. Anal Bioanal Chem 2013; 406:1377-86. [PMID: 24309627 DOI: 10.1007/s00216-013-7525-6] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 10/14/2013] [Accepted: 11/19/2013] [Indexed: 12/21/2022]
Abstract
Lipids are a major component of heart tissue and perform several important functions such as energy storage, signaling, and as building blocks of biological membranes. The heart lipidome is quite diverse consisting of glycerophospholipids such as phosphatidylcholines (PCs), phosphatidylethanolamines (PEs), phosphatidylinositols (PIs), phosphatidylglycerols (PGs), cardiolipins (CLs), and glycerolipids, mainly triacylglycerols (TAGs). In this study, mass spectrometry imaging (MSI) enabled by matrix implantation of ionized silver nanoparticles (AgNP) was used to map several classes of lipids in heart tissue. The use of AgNP matrix implantation was motivated by our previous work showing that implantation doses of only 10(14)/cm(2) of 2 nm gold nanoparticulates into the first 10 nm of the near surface of the tissue enabled detection of most brain lipids (including neutral lipid species such as cerebrosides) more efficiently than traditional organic MALDI matrices. Herein, a similar implantation of 500 eV AgNP(-) across the entire heart tissue section results in a quick, reproducible, solvent-free, uniform matrix concentration of 6 nm AgNP residing near the tissue surface. MALDI-MSI analysis of either positive or negative ions produce high-quality images of several heart lipid species. In negative ion mode, 24 lipid species [16 PEs, 4 PIs, 1 PG, 1 CL, 2 sphingomyelins (SMs)] were imaged. Positive ion images were also obtained from 29 lipid species (10 PCs, 5 PEs, 5 SMs, 9 TAGs) with the TAG species being heavily concentrated in vascular regions of the heart.
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Affiliation(s)
- Shelley N Jackson
- Structural Biology Unit, NIDA IRP, NIH, 333 Cassell Drive, Room 1120, Baltimore, MD, 21224, USA
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44
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Vajn K, Viljetić B, Degmečić IV, Schnaar RL, Heffer M. Differential distribution of major brain gangliosides in the adult mouse central nervous system. PLoS One 2013; 8:e75720. [PMID: 24098718 PMCID: PMC3787110 DOI: 10.1371/journal.pone.0075720] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 08/16/2013] [Indexed: 11/24/2022] Open
Abstract
Gangliosides - sialic acid-bearing glycolipids - are major cell surface determinants on neurons and axons. The same four closely related structures, GM1, GD1a, GD1b and GT1b, comprise the majority of total brain gangliosides in mammals and birds. Gangliosides regulate the activities of proteins in the membranes in which they reside, and also act as cell-cell recognition receptors. Understanding the functions of major brain gangliosides requires knowledge of their tissue distribution, which has been accomplished in the past using biochemical and immunohistochemical methods. Armed with new knowledge about the stability and accessibility of gangliosides in tissues and new IgG-class specific monoclonal antibodies, we investigated the detailed tissue distribution of gangliosides in the adult mouse brain. Gangliosides GD1b and GT1b are widely expressed in gray and white matter. In contrast, GM1 is predominately found in white matter and GD1a is specifically expressed in certain brain nuclei/tracts. These findings are considered in relationship to the hypothesis that gangliosides GD1a and GT1b act as receptors for an important axon-myelin recognition protein, myelin-associated glycoprotein (MAG). Mediating axon-myelin interactions is but one potential function of the major brain gangliosides, and more detailed knowledge of their distribution may help direct future functional studies.
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Affiliation(s)
- Katarina Vajn
- Department of Medical Biology, University of Osijek School of Medicine, Osijek, Croatia
| | - Barbara Viljetić
- Department of Chemistry, Biochemistry and Clinical Chemistry, University of Osijek School of Medicine, Osijek, Croatia
| | | | - Ronald L. Schnaar
- Departments of Pharmacology and Neuroscience, The Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America
| | - Marija Heffer
- Department of Medical Biology, University of Osijek School of Medicine, Osijek, Croatia
- * E-mail:
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45
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Fülöp A, Porada MB, Marsching C, Blott H, Meyer B, Tambe S, Sandhoff R, Junker HD, Hopf C. 4-Phenyl-α-cyanocinnamic Acid Amide: Screening for a Negative Ion Matrix for MALDI-MS Imaging of Multiple Lipid Classes. Anal Chem 2013; 85:9156-63. [DOI: 10.1021/ac4018154] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Annabelle Fülöp
- Institute
of Medical Technology, University of Heidelberg and Mannheim University of Applied Sciences, Paul-Wittsack-Strasse 10, 68163 Mannheim, Germany
| | - Martina B. Porada
- Organic Chemistry, Aalen University of Applied Sciences, Beethovenstrasse
1, 73430 Aalen, Germany
| | - Christian Marsching
- Institute
of Medical Technology, University of Heidelberg and Mannheim University of Applied Sciences, Paul-Wittsack-Strasse 10, 68163 Mannheim, Germany
- Lipid
Pathobiochemistry, German Cancer Research Center (DKFZ), Im Neuenheimer
Feld 280, 69120 Heidelberg, Germany
| | - Henning Blott
- Organic Chemistry, Aalen University of Applied Sciences, Beethovenstrasse
1, 73430 Aalen, Germany
| | - Björn Meyer
- Institute
of Medical Technology, University of Heidelberg and Mannheim University of Applied Sciences, Paul-Wittsack-Strasse 10, 68163 Mannheim, Germany
| | - Suparna Tambe
- Organic Chemistry, Aalen University of Applied Sciences, Beethovenstrasse
1, 73430 Aalen, Germany
| | - Roger Sandhoff
- Lipid
Pathobiochemistry, German Cancer Research Center (DKFZ), Im Neuenheimer
Feld 280, 69120 Heidelberg, Germany
| | - Hans-Dieter Junker
- Organic Chemistry, Aalen University of Applied Sciences, Beethovenstrasse
1, 73430 Aalen, Germany
| | - Carsten Hopf
- Institute
of Medical Technology, University of Heidelberg and Mannheim University of Applied Sciences, Paul-Wittsack-Strasse 10, 68163 Mannheim, Germany
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Trimpin S, Wang B, Lietz CB, Marshall DD, Richards AL, Inutan ED. New ionization processes and applications for use in mass spectrometry. Crit Rev Biochem Mol Biol 2013; 48:409-29. [DOI: 10.3109/10409238.2013.806887] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Hanrieder J, Phan NTN, Kurczy ME, Ewing AG. Imaging mass spectrometry in neuroscience. ACS Chem Neurosci 2013; 4:666-79. [PMID: 23530951 DOI: 10.1021/cn400053c] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Imaging mass spectrometry is an emerging technique of great potential for investigating the chemical architecture in biological matrices. Although the potential for studying neurobiological systems is evident, the relevance of the technique for application in neuroscience is still in its infancy. In the present Review, a principal overview of the different approaches, including matrix assisted laser desorption ionization and secondary ion mass spectrometry, is provided with particular focus on their strengths and limitations for studying different neurochemical species in situ and in vitro. The potential of the various approaches is discussed based on both fundamental and biomedical neuroscience research. This Review aims to serve as a general guide to familiarize the neuroscience community and other biomedical researchers with the technique, highlighting its great potential and suitability for comprehensive and specific chemical imaging.
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Affiliation(s)
- Jörg Hanrieder
- National Center
for Imaging
Mass Spectrometry, Gothenburg University and Chalmers University of Technology, Gothenburg, Sweden
- Department of Chemical and Biological
Engineering, Analytical Chemistry, Chalmers University of Technology, Gothenburg Sweden
| | - Nhu T. N. Phan
- National Center
for Imaging
Mass Spectrometry, Gothenburg University and Chalmers University of Technology, Gothenburg, Sweden
- Department of Chemistry and Molecular
Biology, Analytical Chemistry, Gothenburg University, Gothenburg, Sweden
| | - Michael E. Kurczy
- National Center
for Imaging
Mass Spectrometry, Gothenburg University and Chalmers University of Technology, Gothenburg, Sweden
- Department of Chemical and Biological
Engineering, Analytical Chemistry, Chalmers University of Technology, Gothenburg Sweden
| | - Andrew G. Ewing
- National Center
for Imaging
Mass Spectrometry, Gothenburg University and Chalmers University of Technology, Gothenburg, Sweden
- Department of Chemical and Biological
Engineering, Analytical Chemistry, Chalmers University of Technology, Gothenburg Sweden
- Department of Chemistry and Molecular
Biology, Analytical Chemistry, Gothenburg University, Gothenburg, Sweden
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Woods AS, Colsch B, Jackson SN, Post J, Baldwin K, Roux A, Hoffer B, Cox BM, Hoffer M, Rubovitch V, Pick CG, Schultz JA, Balaban C. Gangliosides and ceramides change in a mouse model of blast induced traumatic brain injury. ACS Chem Neurosci 2013; 4:594-600. [PMID: 23590251 DOI: 10.1021/cn300216h] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Explosive detonations generate atmospheric pressure changes that produce nonpenetrating blast induced "mild" traumatic brain injury (bTBI). The structural basis for mild bTBI has been extremely controversial. The present study applies matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging to track the distribution of gangliosides in mouse brain tissue that were exposed to very low level of explosive detonations (2.5-5.5 psi peak overpressure). We observed major increases of the ganglioside GM2 in the hippocampus, thalamus, and hypothalamus after a single blast exposure. Moreover, these changes were accompanied by depletion of ceramides. No neurological or brain structural signs of injury could be inferred using standard light microscopic techniques. The first source of variability is generated by the Latency between blast and tissue sampling (peak intensity of the blast wave). These findings suggest that subtle molecular changes in intracellular membranes and plasmalemma compartments may be biomarkers for biological responses to mild bTBI. This is also the first report of a GM2 increase in the brains of mature mice from a nongenetic etiology.
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Affiliation(s)
- Amina S. Woods
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
- Center for Neuroscience and Regenerative Medicine, Rockville, Maryland, United States
| | - Benoit Colsch
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
| | - Shelley N. Jackson
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
| | - Jeremy Post
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
- Center for Neuroscience and Regenerative Medicine, Rockville, Maryland, United States
| | - Kathrine Baldwin
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
| | - Aurelie Roux
- Structural Biology Unit, NIDA IRP, National Institutes of Health, Baltimore, Maryland, United States
| | - Barry Hoffer
- Case Western Reserve University, Cleveland, Ohio, United States
| | - Brian M. Cox
- Uniformed Services University, Bethesda, Maryland, United States
- Center for Neuroscience and Regenerative Medicine, Rockville, Maryland, United States
| | - Michael Hoffer
- U.S. Naval Hospital, San Diego, California,
United States
| | | | | | | | - Carey Balaban
- University of Pittsburgh, Pittsburgh, Pennsylvania, United States
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Quanico J, Franck J, Dauly C, Strupat K, Dupuy J, Day R, Salzet M, Fournier I, Wisztorski M. Development of liquid microjunction extraction strategy for improving protein identification from tissue sections. J Proteomics 2013; 79:200-18. [DOI: 10.1016/j.jprot.2012.11.025] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 11/20/2012] [Accepted: 11/30/2012] [Indexed: 12/22/2022]
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