1
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Grabarics M, Lettow M, Kirschbaum C, Greis K, Manz C, Pagel K. Mass Spectrometry-Based Techniques to Elucidate the Sugar Code. Chem Rev 2022; 122:7840-7908. [PMID: 34491038 PMCID: PMC9052437 DOI: 10.1021/acs.chemrev.1c00380] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Indexed: 12/22/2022]
Abstract
Cells encode information in the sequence of biopolymers, such as nucleic acids, proteins, and glycans. Although glycans are essential to all living organisms, surprisingly little is known about the "sugar code" and the biological roles of these molecules. The reason glycobiology lags behind its counterparts dealing with nucleic acids and proteins lies in the complexity of carbohydrate structures, which renders their analysis extremely challenging. Building blocks that may differ only in the configuration of a single stereocenter, combined with the vast possibilities to connect monosaccharide units, lead to an immense variety of isomers, which poses a formidable challenge to conventional mass spectrometry. In recent years, however, a combination of innovative ion activation methods, commercialization of ion mobility-mass spectrometry, progress in gas-phase ion spectroscopy, and advances in computational chemistry have led to a revolution in mass spectrometry-based glycan analysis. The present review focuses on the above techniques that expanded the traditional glycomics toolkit and provided spectacular insight into the structure of these fascinating biomolecules. To emphasize the specific challenges associated with them, major classes of mammalian glycans are discussed in separate sections. By doing so, we aim to put the spotlight on the most important element of glycobiology: the glycans themselves.
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Affiliation(s)
- Márkó Grabarics
- Institute
of Chemistry and Biochemistry, Freie Universität
Berlin, Arnimallee 22, 14195 Berlin, Germany
- Department
of Molecular Physics, Fritz Haber Institute
of the Max Planck Society, Faradayweg 4−6, 14195 Berlin, Germany
| | - Maike Lettow
- Institute
of Chemistry and Biochemistry, Freie Universität
Berlin, Arnimallee 22, 14195 Berlin, Germany
- Department
of Molecular Physics, Fritz Haber Institute
of the Max Planck Society, Faradayweg 4−6, 14195 Berlin, Germany
| | - Carla Kirschbaum
- Institute
of Chemistry and Biochemistry, Freie Universität
Berlin, Arnimallee 22, 14195 Berlin, Germany
- Department
of Molecular Physics, Fritz Haber Institute
of the Max Planck Society, Faradayweg 4−6, 14195 Berlin, Germany
| | - Kim Greis
- Institute
of Chemistry and Biochemistry, Freie Universität
Berlin, Arnimallee 22, 14195 Berlin, Germany
- Department
of Molecular Physics, Fritz Haber Institute
of the Max Planck Society, Faradayweg 4−6, 14195 Berlin, Germany
| | - Christian Manz
- Institute
of Chemistry and Biochemistry, Freie Universität
Berlin, Arnimallee 22, 14195 Berlin, Germany
- Department
of Molecular Physics, Fritz Haber Institute
of the Max Planck Society, Faradayweg 4−6, 14195 Berlin, Germany
| | - Kevin Pagel
- Institute
of Chemistry and Biochemistry, Freie Universität
Berlin, Arnimallee 22, 14195 Berlin, Germany
- Department
of Molecular Physics, Fritz Haber Institute
of the Max Planck Society, Faradayweg 4−6, 14195 Berlin, Germany
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2
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Pepi LE, Leach FE, Klein DR, Brodbelt JS, Amster IJ. Investigation of the Experimental Parameters of Ultraviolet Photodissociation for the Structural Characterization of Chondroitin Sulfate Glycosaminoglycan Isomers. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:1759-1770. [PMID: 34096288 PMCID: PMC8377745 DOI: 10.1021/jasms.1c00119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Glycosaminoglycans (GAGs) are linear polysaccharides that participate in a broad range of biological functions. Their incomplete biosynthesis pathway leads to nonuniform chains and complex mixtures. For this reason, the characterization of GAGs has been a difficult hurdle for the analytical community. Recently, ultraviolet photodissociation (UVPD) has emerged as a useful tool for determining sites of modification within a GAG chain. Here, we investigate the ability for UVPD to distinguish chondroitin sulfate epimers and the effects of UVPD experimental parameters on fragmentation efficiency. Chondroitin sulfate A (CS-A) and chondroitin sulfate B (CS-B), commonly referred to as dermatan sulfate (DS), differ only in C-5 uronic acid stereochemistry. This uronic acid difference can influence GAG-protein binding and therefore can alter the specific biological function of a GAG chain. Prior tandem mass spectrometry methods investigated for the elucidation of GAG structures also have difficulty differentiating 4-O from 6-O sulfation in chondroitin sulfate GAGs. Preliminary data using UVPD to characterize GAGs showed a promising ability to characterize 4-O sulfation in CS-A GAGs. Here, we look in depth at the capability of UVPD to distinguish chondroitin sulfate C-5 diastereomers and the role of key experimental parameters in making this distinction. Results using a 193 nm excimer laser and a 213 nm solid-state laser are compared for this study. The effect of precursor ionization state, the number of laser pulses (193 or 213 nm UVPD), and the use of the low-pressure versus high-pressure trap are investigated.
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Affiliation(s)
- Lauren E Pepi
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Franklin E Leach
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
- Department of Environmental Health Sciences, University of Georgia, Athens, Georgia 30602, United States
| | - Dustin R Klein
- Department of Biochemistry and Mass Spectrometry Research Center, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Jennifer S Brodbelt
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - I Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
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3
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Lettow M, Greis K, Grabarics M, Horlebein J, Miller RL, Meijer G, von Helden G, Pagel K. Chondroitin Sulfate Disaccharides in the Gas Phase: Differentiation and Conformational Constraints. J Phys Chem A 2021; 125:4373-4379. [PMID: 33979516 PMCID: PMC8279649 DOI: 10.1021/acs.jpca.1c02463] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
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Glycosaminoglycans
(GAGs) are a family of complex carbohydrates
vital to all mammalian organisms and involved in numerous biological
processes. Chondroitin and dermatan sulfate, an important class of
GAGs, are linear macromolecules consisting of disaccharide building
blocks of N-acetylgalactosamine and two different
uronic acids. The varying degree and the site of sulfation render
their characterization challenging. Here, we combine mass spectrometry
with cryogenic infrared spectroscopy in the wavenumber range from
1000 to 1800 cm–1. Fingerprint spectra were recorded
for a comprehensive set of disaccharides bearing all known motifs
of sulfation. In addition, state-of-the-art quantum chemical calculations
were performed to aid the understanding of the differences in the
experimental fingerprint spectra. The results show that the degree
and position of charged sulfate groups define the size of the conformational
landscape in the gas phase. The detailed understanding of cryogenic
infrared spectroscopy for acidic and often highly sulfated glycans
may pave the way to utilize the technique in fragment-based sequencing
approaches.
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Affiliation(s)
- Maike Lettow
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Kim Greis
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Márkó Grabarics
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Jan Horlebein
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Rebecca L Miller
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark
| | - Gerard Meijer
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Gert von Helden
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Kevin Pagel
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
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4
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Bilong M, Bayat P, Bourderioux M, Jérôme M, Giuliani A, Daniel R. Mammal Hyaluronidase Activity on Chondroitin Sulfate and Dermatan Sulfate: Mass Spectrometry Analysis of Oligosaccharide Products. Glycobiology 2021; 31:751-761. [PMID: 33442722 DOI: 10.1093/glycob/cwab004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/28/2020] [Accepted: 12/28/2020] [Indexed: 11/13/2022] Open
Abstract
Mammalian hyaluronidases are endo-N-acetyl-D-hexosaminidases involved in the catabolism of hyaluronic acid (HA) but their role in the catabolism of chondroitin sulfate (CS) is also examined. HA and CS are glycosaminoglycans (GAGs) implicated in several physiological and pathological processes, and understanding their metabolism is of significant importance. Data have been previously reported on the degradation of CS under the action of hyaluronidase, yet a detailed structural investigation of CS depolymerization products remains necessary to improve our knowledge of the CS depolymerizyng activity of hyaluronidase. For that purpose, the fine structural characterization of CS oligosaccharides formed upon the enzymatic depolymerization of various CS sub-types by hyaluronidase has been carried out by high resolution Orbitrap mass spectrometry and extreme UV (XUV) photodissociation tandem mass spectrometry. The exact mass measurements show the formation of wide size range of even oligosaccharides upon digestion of CS-A and CS-C comprising hexa- and octa-saccharides among the main digestion products, as well as formation of small quantities of odd-numbered oligosaccharides, while no hyaluronidase activity was detected on CS-B. In addition, slight differences have been observed in the distribution of oligosaccharides in the digestion mixture of CS-A and CS-C, the contribution of longer oligosaccharides being significantly higher for CS-C. The sequence of CS oligosaccharide products determined XUV photodissociation experiments verifies the selective β(1 → 4) glycosidic bond cleavage catalyzed by mammal hyaluronidase. The ability of the mammal hyaluronidase to produce hexa- and higher oligosaccharides supports its role in the catabolism of CS anchored to membrane proteoglycans and in extra-cellular matrix.
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Affiliation(s)
- Mélanie Bilong
- Université Paris-Saclay, Univ Evry, CNRS, LAMBE, 91025 Evry-Courcouronnes, France
| | - Parisa Bayat
- Université Paris-Saclay, Univ Evry, CNRS, LAMBE, 91025 Evry-Courcouronnes, France
| | - Matthieu Bourderioux
- Université Paris-Saclay, Univ Evry, CNRS, LAMBE, 91025 Evry-Courcouronnes, France
| | - Murielle Jérôme
- Université Paris-Saclay, Univ Evry, CNRS, LAMBE, 91025 Evry-Courcouronnes, France
| | - Alexandre Giuliani
- SOLEIL, l'Orme des Merisiers, St Aubin, BP48, 91192 Gif sur Yvette Cedex, France.,UAR1008, Transform, INRAe, Rue de la Géraudière, 44316 Nantes, France
| | - Régis Daniel
- Université Paris-Saclay, Univ Evry, CNRS, LAMBE, 91025 Evry-Courcouronnes, France
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5
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Pepi LE, Sasiene ZJ, Mendis PM, Jackson GP, Amster IJ. Structural Characterization of Sulfated Glycosaminoglycans Using Charge-Transfer Dissociation. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:2143-2153. [PMID: 32820910 PMCID: PMC8045215 DOI: 10.1021/jasms.0c00252] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Glycosaminoglycans (GAGs) participate in a broad range of physiological processes, and their structures are of interest to researchers in structural biology and medicine. Although they are abundant in tissues and extracellular matrices, their structural heterogeneity makes them challenging analytes. Mass spectrometry, and more specifically, tandem mass spectrometry, is particularly well suited for their analysis. Many tandem mass spectrometry techniques have been examined for their suitability toward the structural characterization of GAGs. Threshold activation methods such as collision-induced dissociation (CID) produce mainly glycosidic cleavages and do not yield a broad range of structurally informative cross-ring fragments. Considerable research efforts have been directed at finding other means of dissociating gas-phase GAG ions to produce more comprehensive structural information. Here, we compare the structural information on GAGs obtained by charge-transfer dissociation (CTD) and electron detachment dissociation (EDD). EDD has previously been applied to GAGs and is known to produce both glycosidic and cross-ring cleavages in similar abundance. CTD has not previously been used to analyze GAGs but has been shown to produce abundant cross-ring cleavages and no sulfate loss when applied to another class of sulfated carbohydrates like algal polysaccharides. In contrast to EDD, which is restricted to FTICR mass spectrometers, CTD can be implemented on other platforms, such as ion trap mass spectrometers (ITMS). Here, we show the capability of CTD-ITMS to produce structurally significant details of the sites of modification in both heparan sulfate (HS) and chondroitin sulfate (CS) standards ranging in length from degree of polymerization (dp) 4 to dp6. EDD and CTD both yield more structural information than CID and yield similar fractional abundances to one another for glycosidic fragments, cross-ring fragments, and neutral losses.
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Affiliation(s)
- Lauren E Pepi
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Zachary J Sasiene
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Praneeth M Mendis
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Glen P Jackson
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
- Department of Forensic and Investigative Science, West Virginia University, Morgantown, West Virginia 26506, United States
| | - I Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
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6
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Spliid CB, Toledo AG, Salanti A, Esko JD, Clausen TM. Beware, commercial chondroitinases vary in activity and substrate specificity. Glycobiology 2020; 31:103-115. [PMID: 32573715 DOI: 10.1093/glycob/cwaa056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 11/14/2022] Open
Abstract
Chondroitin sulfate (CS)and dermatan sulfate (DS) are negatively charged polysaccharides found abundantly in animal tissue and have been extensively described to play key roles in health and disease. The most common method to analyze their structure is by digestion into disaccharides with bacterial chondroitinases, followed by chromatography and/or mass spectrometry. While studying the structure of oncofetal CS, we noted a large variation in the activity and specificity of commercially available chondroitinases. Here studied the kinetics of the enzymes and used high-performance liquid chromatography-mass spectrometry to determine the di- and oligosaccharide products resulting from the digestion of commercially available bovine CS A, shark CS C and porcine DS, focusing on chondroitinases ABC, AC and B from different vendors. Application of a standardized assay setup demonstrated large variations in the enzyme-specific activity compared to the values provided by vendors, large variation in enzyme specific activity of similar enzymes from different vendors and differences in the extent of cleavage of the substrates and the generated products. The high variability of different chondroitinases highlights the importance of testing enzyme activity and monitoring product formation in assessing the content and composition of chondroitin and DSs in cells and tissues.
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Affiliation(s)
- Charlotte B Spliid
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093, USA.,Centre for Medical Parasitology at Department for Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen and Department of Infectious Disease, Copenhagen University Hospital, 2200 Copenhagen, Denmark
| | - Alejandro Gomez Toledo
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Ali Salanti
- Centre for Medical Parasitology at Department for Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen and Department of Infectious Disease, Copenhagen University Hospital, 2200 Copenhagen, Denmark
| | - Jeffrey D Esko
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Thomas Mandel Clausen
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093, USA.,Centre for Medical Parasitology at Department for Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen and Department of Infectious Disease, Copenhagen University Hospital, 2200 Copenhagen, Denmark
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7
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Niu C, Zhao Y, Bobst CE, Savinov SN, Kaltashov IA. Identification of Protein Recognition Elements within Heparin Chains Using Enzymatic Foot-Printing in Solution and Online SEC/MS. Anal Chem 2020; 92:7565-7573. [PMID: 32347711 DOI: 10.1021/acs.analchem.0c00115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Understanding molecular mechanisms governing interactions of glycosaminoglycans (such as heparin) with proteins remains challenging due to their enormous structural heterogeneity. Commonly accepted approaches seek to reduce the structural complexity by searching for "binding epitopes" within the limited subsets of short heparin oligomers produced either enzymatically or synthetically. A top-down approach presented in this work seeks to preserve the chemical diversity displayed by heparin by allowing the longer and structurally diverse chains to interact with the client protein. Enzymatic lysis of the protein-bound heparin chains followed by the product analysis using size exclusion chromatography with online mass spectrometry detection (SEC/MS) reveals the oligomers that are protected from lysis due to their tight association with the protein, and enables their characterization (both the oligomer length, and the number of incorporated sulfate and acetyl groups). When applied to a paradigmatic heparin/antithrombin system, the new method generates a series of oligomers with surprisingly distinct sulfation levels. The extent of sulfation of the minimal-length binder (hexamer) is relatively modest yet persistent, consistent with the notion of six sulfate groups being both essential and sufficient for antithrombin binding. However, the masses of longer surviving chains indicate complete sulfation of disaccharides beyond the hexasaccharide core. Molecular dynamics simulations confirm the existence of favorable electrostatic interactions between the high charge-density saccharide residues flanking the "canonical" antithrombin-binding hexasaccharide and the positive patch on the surface of the overall negatively charged protein. Furthermore, electrostatics may rescue the heparin/protein interaction in the absence of the canonical binding element.
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Affiliation(s)
- Chendi Niu
- Chemistry Department, University of Massachusetts-Amherst, 240 Thatcher Way, Amherst, Massachusetts 01003, United States
| | - Yunlong Zhao
- Chemistry Department, University of Massachusetts-Amherst, 240 Thatcher Way, Amherst, Massachusetts 01003, United States
| | - Cedric E Bobst
- Chemistry Department, University of Massachusetts-Amherst, 240 Thatcher Way, Amherst, Massachusetts 01003, United States
| | - Sergey N Savinov
- Biochemistry and Molecular Biology Department, University of Massachusetts-Amherst, 240 Thatcher Way, Amherst, Massachusetts 01003, United States
| | - Igor A Kaltashov
- Chemistry Department, University of Massachusetts-Amherst, 240 Thatcher Way, Amherst, Massachusetts 01003, United States
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8
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Glycosaminoglycan Domain Mapping of Cellular Chondroitin/Dermatan Sulfates. Sci Rep 2020; 10:3506. [PMID: 32103093 PMCID: PMC7044218 DOI: 10.1038/s41598-020-60526-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 02/12/2020] [Indexed: 12/22/2022] Open
Abstract
Glycosaminoglycans (GAGs) are polysaccharides produced by most mammalian cells and involved in a variety of biological processes. However, due to the size and complexity of GAGs, detailed knowledge about the structure and expression of GAGs by cells, the glycosaminoglycome, is lacking. Here we report a straightforward and versatile approach for structural domain mapping of complex mixtures of GAGs, GAGDoMa. The approach is based on orthogonal enzymatic depolymerization of the GAGs to generate internal, terminating, and initiating domains, and nanoflow reversed-phase ion-pairing chromatography with negative mode higher-energy collision dissociation (HCD) tandem mass spectrometry (MS/MS) for structural characterization of the individual domains. GAGDoMa provides a detailed structural insight into the glycosaminoglycome, and offers an important tool for deciphering the complexity of GAGs in cellular physiology and pathology.
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9
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Duan J, Pepi L, Amster IJ. A Scoring Algorithm for the Automated Analysis of Glycosaminoglycan MS/MS Data. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:2692-2703. [PMID: 31673949 PMCID: PMC6917907 DOI: 10.1007/s13361-019-02338-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 08/20/2019] [Accepted: 08/20/2019] [Indexed: 06/10/2023]
Abstract
The role of glycosaminoglycans (GAGs) in major biological functions is numerous and diverse, yet structural characterization of them by mass spectrometric techniques proves to be challenging. Characterization of GAG structure from tandem mass spectrometry is a tedious and time-consuming process but one that can be automated in a database-independent, high-throughput fashion through the assistance of software implementing a genetic algorithm (J. Am. Soc. Mass Spectrom. 29, 1802-1911, 2018). This work presents the manner in which this data is interpreted by the software, specifically addressing the development of a scoring algorithm. The significance of glycosidic and cross-ring fragment ions and the implications that specific fragments provide for assigning the positions of modifications are discussed. The scoring algorithm is tested for statistical merit using the widely accepted expectation value as the criterion for quality. Using MS/MS data for well-characterized standards, this scoring approach is shown to assign the correct structure, with a low likelihood (1 in 1012 chances) that the assigned structure matches the data due to random chance. The integrated software that automates the structure assignment is called Glycosaminoglycan-Unambiguous Identification Technology (G-UNIT).
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Affiliation(s)
- Jiana Duan
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Lauren Pepi
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - I Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA.
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10
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Wei J, Wu J, Tang Y, Ridgeway ME, Park MA, Costello CE, Zaia J, Lin C. Characterization and Quantification of Highly Sulfated Glycosaminoglycan Isomers by Gated-Trapped Ion Mobility Spectrometry Negative Electron Transfer Dissociation MS/MS. Anal Chem 2019; 91:2994-3001. [PMID: 30649866 DOI: 10.1021/acs.analchem.8b05283] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Glycosaminoglycans (GAGs) play vital roles in many biological processes and are naturally present as complex mixtures of polysaccharides with tremendous structural heterogeneity, including many structural isomers. Mass spectrometric analysis of GAG isomers, in particular highly sulfated heparin (Hep) and heparan sulfate (HS), is challenging because of their structural similarity and facile sulfo losses during analysis. Herein, we show that highly sulfated Hep/HS isomers may be resolved by gated-trapped ion mobility spectrometry (gated-TIMS) with negligible sulfo losses. Subsequent negative electron transfer dissociation (NETD) tandem mass spectrometry (MS/MS) analysis of TIMS-separated Hep/HS isomers generated extensive glycosidic and cross-ring fragments for confident isomer differentiation and structure elucidation. The high mobility resolution and preservation of labile sulfo modifications afforded by gated-TIMS MS analysis also allowed relative quantification of highly sulfated heparin isomers. These results show that the gated-TIMS-NETD MS/MS approach is useful for both qualitative and quantitative analysis of highly sulfated Hep/HS compounds in a manner not possible with other techniques.
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Affiliation(s)
- Juan Wei
- Center for Biomedical Mass Spectrometry , Boston University School of Medicine , Boston , Massachusetts 02118 , United States
| | - Jiandong Wu
- Center for Biomedical Mass Spectrometry , Boston University School of Medicine , Boston , Massachusetts 02118 , United States
| | - Yang Tang
- Center for Biomedical Mass Spectrometry , Boston University School of Medicine , Boston , Massachusetts 02118 , United States.,Department of Chemistry , Boston University , Boston , Massachusetts 02215 , United States
| | - Mark E Ridgeway
- Bruker Daltonics , Billerica , Massachusetts 01821 , United States
| | - Melvin A Park
- Bruker Daltonics , Billerica , Massachusetts 01821 , United States
| | - Catherine E Costello
- Center for Biomedical Mass Spectrometry , Boston University School of Medicine , Boston , Massachusetts 02118 , United States.,Department of Chemistry , Boston University , Boston , Massachusetts 02215 , United States
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry , Boston University School of Medicine , Boston , Massachusetts 02118 , United States
| | - Cheng Lin
- Center for Biomedical Mass Spectrometry , Boston University School of Medicine , Boston , Massachusetts 02118 , United States
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11
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Exploration of variations in proteome and metabolome for predictive diagnostics and personalized treatment algorithms: Innovative approach and examples for potential clinical application. J Proteomics 2018; 188:30-40. [DOI: 10.1016/j.jprot.2017.08.020] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 08/06/2017] [Accepted: 08/25/2017] [Indexed: 12/20/2022]
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12
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Wu J, Wei J, Hogan JD, Chopra P, Joshi A, Lu W, Klein J, Boons GJ, Lin C, Zaia J. Negative Electron Transfer Dissociation Sequencing of 3-O-Sulfation-Containing Heparan Sulfate Oligosaccharides. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2018; 29:1262-1272. [PMID: 29564812 PMCID: PMC6004244 DOI: 10.1007/s13361-018-1907-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 01/27/2018] [Accepted: 01/27/2018] [Indexed: 05/10/2023]
Abstract
Among dissociation methods, negative electron transfer dissociation (NETD) has been proven the most useful for glycosaminoglycan (GAG) sequencing because it produces informative fragmentation, a low degree of sulfate losses, high sensitivity, and translatability to multiple instrument types. The challenge, however, is to distinguish positional sulfation. In particular, NETD has been reported to fail to differentiate 4-O- versus 6-O-sulfation in chondroitin sulfate decasaccharide. This raised the concern of whether NETD is able to differentiate the rare 3-O-sulfation from predominant 6-O-sulfation in heparan sulfate (HS) oligosaccharides. Here, we report that NETD generates highly informative spectra that differentiate sites of O-sulfation on glucosamine residues, enabling structural characterizations of synthetic HS isomers containing 3-O-sulfation. Further, lyase-resistant 3-O-sulfated tetrasaccharides from natural sources were successfully sequenced. Notably, for all of the oligosaccharides in this study, the successful sequencing is based on NETD tandem mass spectra of commonly observed deprotonated precursor ions without derivatization or metal cation adduction, simplifying the experimental workflow and data interpretation. These results demonstrate the potential of NETD as a sensitive analytical tool for detailed, high-throughput structural analysis of highly sulfated GAGs. Graphical Abstract.
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Affiliation(s)
- Jiandong Wu
- Center for Biomedical Mass Spectrometry, Department of Biochemistry and Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street, 5th Floor, Boston, MA, 02118, USA
| | - Juan Wei
- Center for Biomedical Mass Spectrometry, Department of Biochemistry and Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street, 5th Floor, Boston, MA, 02118, USA
| | - John D Hogan
- Bioinformatics Program, Boston University, Boston, MA, 02215, USA
| | - Pradeep Chopra
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
| | - Apoorva Joshi
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Weigang Lu
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Joshua Klein
- Bioinformatics Program, Boston University, Boston, MA, 02215, USA
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Bijvoet Center for Biomolecular Research, Utrecht University, 3584, Utrecht, CG, Netherlands
| | - Cheng Lin
- Center for Biomedical Mass Spectrometry, Department of Biochemistry and Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street, 5th Floor, Boston, MA, 02118, USA
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry, Department of Biochemistry and Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street, 5th Floor, Boston, MA, 02118, USA.
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13
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Dang DH, Evans RD. Application of ESI-HRMS for molybdenum speciation in natural waters: An investigation of molybdate-halide reactions. Talanta 2018; 179:221-229. [PMID: 29310226 DOI: 10.1016/j.talanta.2017.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 11/24/2022]
Abstract
High resolution electrospray ionization mass spectrometry (ESI-HRMS) was used to study the speciation of molybdate in interaction with halides (Cl, F, Br). Desolvation during electrospray ionization induced alteration of aqueous species but method optimization successfully suppressed artefact compounds. At low Mo concentrations, chloro(oxo)molybdate and fluoro(oxo)molybdate species were found and in natural samples, MoO3Cl was detected for the first time, to the best of our knowledge. Apparent equilibrium constants for Cl substitution on molybdate were calculated for a range of pH values from 4.5 to 8.5. A minor alteration in speciation during the gas phase (conversion of doubly charged MoO42- to HMoO4-) did not allow investigation of the molybdate acid-base properties; however this could be determined by speciation modeling. This study provides further evidence that ESI-HRMS is a fast and suitable tool to Deceasedassess the speciation of inorganic compounds such as Mo.
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Affiliation(s)
- Duc Huy Dang
- School of the Environment, Trent University, 1600 West Bank Drive, Peterborough, ON, Canada K9L 0G2.
| | - R Douglas Evans
- School of the Environment, Trent University, 1600 West Bank Drive, Peterborough, ON, Canada K9L 0G2; Water Quality Centre, Trent University, 1600 West Bank Drive, Peterborough, ON, Canada K9L 0G2.
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14
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Agyekum I, Pepi L, Yu Y, Li J, Yan L, Linhardt RJ, Chen S, Amster IJ. Structural elucidation of fucosylated chondroitin sulfates from sea cucumber using FTICR-MS/MS. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2018; 24:157-167. [PMID: 29232996 PMCID: PMC5732082 DOI: 10.1177/1469066717731900] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Fucosylated chondroitin sulfates are complex polysaccharides extracted from sea cucumber. They have been extensively studied for their anticoagulant properties and have been implicated in other biological activities. While nuclear magnetic resonance spectroscopy has been used to extensively characterize fucosylated chondroitin sulfate oligomers, we herein report the first detailed mass characterization of fucosylated chondroitin sulfate using high-resolution Fourier transform ion cyclotron resonance mass spectrometry. The two species of fucosylated chondroitin sulfates considered for this work include Pearsonothuria graeffei (FCS-Pg) and Isostichopus badionotus (FCS-Ib). Fucosylated chondroitin sulfate oligosaccharides were prepared by N-deacetylation-deaminative cleavage of the two fucosylated chondroitin sulfates and purified by repeated gel filtration. Accurate mass measurements obtained from electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry measurements confirmed the oligomeric nature of these two fucosylated chondroitin sulfate oligosaccharides with each trisaccharide repeating unit averaging four sulfates per trisaccharide. Collision-induced dissociation of efficiently deprotonated molecular ions through Na/H+ exchange proved useful in providing structurally relevant glycosidic and cross-ring product ions, capable of assigning the sulfate modifications on the fucosylated chondroitin sulfate oligomers. Careful examination of the tandem mass spectrometry of both species deferring in the positions of sulfate groups on the fucose residue (FCS-Pg-3,4- OS) and (FCS-Ib-2,4- OS) revealed cross-ring products 0,2Aαf and 2,4X2αf which were diagnostic for (FCS-Pg-3,4- OS) and 0,2X2αf diagnostic for (FCS-Ib-2,4- OS). Mass spectrometry and tandem mass spectrometry data acquired for both species varying in oligomer length (dp3-dp15) are presented.
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Affiliation(s)
- Isaac Agyekum
- Department of Chemistry, University of Georgia, Athens, USA
| | - Lauren Pepi
- Department of Chemistry, University of Georgia, Athens, USA
| | - Yanlei Yu
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, USA
| | - Junhui Li
- Department of Food Science and Nutrition, Zhejiang University, China
| | - Lufeng Yan
- Department of Food Science and Nutrition, Zhejiang University, China
| | - Robert J Linhardt
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, USA
| | - Shiguo Chen
- Department of Food Science and Nutrition, Zhejiang University, China
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15
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Yu Y, Duan J, Leach FE, Toida T, Higashi K, Zhang H, Zhang F, Amster IJ, Linhardt RJ. Sequencing the Dermatan Sulfate Chain of Decorin. J Am Chem Soc 2017; 139:16986-16995. [PMID: 29111696 PMCID: PMC6298738 DOI: 10.1021/jacs.7b10164] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Glycomics represents one of the last frontiers and most challenging in omic analysis. Glycosylation occurs in the endoplasmic reticulum and the Golgi organelle and its control is neither well-understood nor predictable based on proteomic or genomic analysis. One of the most structurally complex classes of glycoconjugates is the proteoglycans (PGs) and their glycosaminoglycan (GAG) side chains. Previously, our laboratory solved the structure of the chondroitin sulfate chain of the bikunin PG. The current study examines the much more complex structure of the dermatan sulfate GAG chain of decorin PG. By utilizing sophisticated separation methods followed by compositional analysis, domain mapping, and tandem mass spectrometry coupled with analysis by a modified genetic algorithm approach, the structural motif for the decorin dermatan sulfate chain was determined. This represents the second example of a GAG with a prominent structural motif, suggesting that the structural variability of this class of glycoconjugates is somewhat simpler than had been expected.
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Affiliation(s)
- Yanlei Yu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, China
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies
| | - Jiana Duan
- Department of Chemistry, University of Georgia, Athens, Georgia United States
| | - Franklin E. Leach
- Department of Chemistry, University of Georgia, Athens, Georgia United States
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Kyohei Higashi
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Hong Zhang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, China
| | - Fuming Zhang
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies
| | - I. Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, Georgia United States
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies
- Department of Biology, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
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16
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Leach FE, Riley NM, Westphall MS, Coon JJ, Amster IJ. Negative Electron Transfer Dissociation Sequencing of Increasingly Sulfated Glycosaminoglycan Oligosaccharides on an Orbitrap Mass Spectrometer. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:1844-1854. [PMID: 28589488 PMCID: PMC5711533 DOI: 10.1007/s13361-017-1709-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/04/2017] [Accepted: 05/07/2017] [Indexed: 05/03/2023]
Abstract
The structural characterization of sulfated glycosaminoglycan (GAG) carbohydrates remains an important target for analytical chemists attributable to challenges introduced by the natural complexity of these mixtures and the defined need for molecular-level details to elucidate biological structure-function relationships. Tandem mass spectrometry has proven to be the most powerful technique for this purpose. Previously, electron detachment dissociation (EDD), in comparison to other methods of ion activation, has been shown to provide the largest number of useful cleavages for de novo sequencing of GAG oligosaccharides, but such experiments are restricted to Fourier transform ion cyclotron resonance mass spectrometers (FTICR-MS). Negative electron transfer dissociation (NETD) provides similar fragmentation results, and can be achieved on any mass spectrometry platform that is designed to accommodate ion-ion reactions. Here, we examine for the first time the effectiveness of NETD-Orbitrap mass spectrometry for the structural analysis of GAG oligosaccharides. Compounds ranging in size from tetrasaccharides to decasaccharides were dissociated by NETD, producing both glycosidic and cross-ring cleavages that enabled the location of sulfate modifications. The highly-sulfated, heparin-like synthetic GAG, ArixtraTM, was also successfully sequenced by NETD. In comparison to other efforts to sequence GAG chains without fully ionized sulfate constituents, the occurrence of sulfate loss peaks is minimized by judicious precursor ion selection. The results compare quite favorably to prior results with electron detachment dissociation (EDD). Significantly, the duty cycle of the NETD experiment is sufficiently short to make it an effective tool for on-line separations, presenting a straightforward path for selective, high-throughput analysis of GAG mixtures. Graphical Abstract ᅟ.
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Affiliation(s)
| | - Nicholas M Riley
- Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Michael S Westphall
- Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Joshua J Coon
- Genome Center of Wisconsin, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
- Morgridge Institute for Research, Madison, WI, USA
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17
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Agyekum I, Zong C, Boons GJ, Amster IJ. Single Stage Tandem Mass Spectrometry Assignment of the C-5 Uronic Acid Stereochemistry in Heparan Sulfate Tetrasaccharides using Electron Detachment Dissociation. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:1741-1750. [PMID: 28389983 PMCID: PMC5632119 DOI: 10.1007/s13361-017-1643-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 02/14/2017] [Accepted: 02/24/2017] [Indexed: 05/03/2023]
Abstract
The analysis of heparan sulfate (HS) glycosaminoglycans presents many challenges, due to the high degree of structural heterogeneity arising from their non-template biosynthesis. Complete structural elucidation of glycosaminoglycans necessitates the unambiguous assignments of sulfo modifications and the C-5 uronic acid stereochemistry. Efforts to develop tandem mass spectrometric-based methods for the structural analysis of glycosaminoglycans have focused on the assignment of sulfo positions. The present work focuses on the assignment of the C-5 stereochemistry of the uronic acid that lies closest to the reducing end. Prior work with electron-based tandem mass spectrometry methods, specifically electron detachment dissociation (EDD), have shown great promise in providing stereo-specific product ions, such as the B3´ -CO2, which has been found to distinguish glucuronic acid (GlcA) from iduronic acid (IdoA) in some HS tetrasaccharides. The previously observed diagnostic ions are generally not observed with 2-O-sulfo uronic acids or for more highly sulfated heparan sulfate tetrasaccharides. A recent study using electron detachment dissociation and principal component analysis revealed a series of ions that correlate with GlcA versus IdoA for a set of 2-O-sulfo HS tetrasaccharide standards. The present work comprehensively investigates the efficacy of these ions for assigning the C-5 stereochemistry of the reducing end uronic acid in 33 HS tetrasaccharides. A diagnostic ratio can be computed from the sum of the ions that correlate to GlcA to those that correlate to IdoA. Graphical Abstract ᅟ.
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Affiliation(s)
- Isaac Agyekum
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
| | - Chengli Zong
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, 30602, USA
| | - I Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, GA, 30602, USA.
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18
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Khanal N, Masellis C, Kamrath MZ, Clemmer DE, Rizzo TR. Glycosaminoglycan Analysis by Cryogenic Messenger-Tagging IR Spectroscopy Combined with IMS-MS. Anal Chem 2017; 89:7601-7606. [PMID: 28636333 PMCID: PMC5675075 DOI: 10.1021/acs.analchem.7b01467] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We combine ion mobility spectrometry with cryogenic, messenger-tagging, infrared spectroscopy and mass spectrometry to identify different isomeric disaccharides of chondroitin sulfate (CS) and heparan sulfate (HS), which are representatives of two major subclasses of glycosaminoglycans. Our analysis shows that while CS and HS disaccharide isomers have similar drift times, they can be uniquely distinguished by their vibrational spectrum between ∼3200 and 3700 cm-1 due to their different OH hydrogen-bonding patterns. We suggest that this combination of techniques is well suited to identify and characterize glycan isomers directly, which presents tremendous challenges for existing methods.
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Affiliation(s)
- Neelam Khanal
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Chiara Masellis
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland
| | - Michael Z. Kamrath
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland
| | - David E. Clemmer
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Thomas R. Rizzo
- Laboratoire de Chimie Physique Moléculaire, École Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland
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19
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Schindler B, Renois-Predelus G, Bagdadi N, Melizi S, Barnes L, Chambert S, Allouche AR, Compagnon I. MS/IR, a new MS-based hyphenated method for analysis of hexuronic acid epimers in glycosaminoglycans. Glycoconj J 2016; 34:421-425. [PMID: 27924423 DOI: 10.1007/s10719-016-9741-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 10/03/2016] [Accepted: 10/07/2016] [Indexed: 11/24/2022]
Abstract
We report an original MS-based hyphenated method for the elucidation of the epimerization in GAG fragments. It consists of measuring simultaneously the MS/MS spectrum and the gas phase IR spectrum to gain direct structural information. This is possible using a customized MS instrument, modified to allow injection of a tunable IR laser inside of the instrument for in situ spectroscopy of trapped ions. The proof of principle of this approach is performed in the case of a hyaluronic acid tetrasaccharide standard. In addition, we provide the reference IR fingerprint of glucuronic and Iduronic monosaccharide standards. Remarkably, we show that the gas phase IR fingerprint of reference hexuronic acid monosaccharides proves to be transposable to oligosaccharides. Therefore, the method presented here is predictive and allows structural elucidation of unknown GAG fragments, even in the absence of referenced standards.
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Affiliation(s)
- Baptiste Schindler
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622, Villeurbanne, France
| | - Gina Renois-Predelus
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622, Villeurbanne, France
| | - Nassiba Bagdadi
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622, Villeurbanne, France
| | - Sihem Melizi
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622, Villeurbanne, France
| | - Loïc Barnes
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622, Villeurbanne, France
| | - Stéphane Chambert
- Univ Lyon, INSA-Lyon, CNRS, Université Lyon 1, CPE Lyon, ICBMS, UMR 5246, Bâtiment Jules Verne, 20 avenue Albert Einstein, F-69621, Villeurbanne, France
| | - Abdul-Rahman Allouche
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622, Villeurbanne, France
| | - Isabelle Compagnon
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622, Villeurbanne, France. .,Institut Universitaire de France IUF, 103 Blvd St Michel, 75005, Paris, France.
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20
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Nimptsch A, Schiller J. The selected matrix influences the matrix-assisted laser desorption/ionization time-of-flight mass spectral patterns of partially deuterated glycosaminoglycan disaccharides. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2016; 30:2164-2170. [PMID: 27479785 DOI: 10.1002/rcm.7694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 07/13/2016] [Accepted: 07/17/2016] [Indexed: 06/06/2023]
Abstract
RATIONALE If carbohydrates are investigated by nuclear magnetic resonance (NMR) spectroscopy, they are normally dissolved in deuterated solvents, such as D2 O. The incorporation of deuterium leads to a high complexity of subsequently recorded mass spectra and reduced sensitivity because different deuterated ions become detectable. Here, we demonstrate that the applied matrix-assisted laser desorption/ionization (MALDI) matrix solution has a considerable impact on the observed isotopic distribution. METHODS Unsaturated disaccharides of chondroitin (CS) and dermatan sulfate (DS) were prepared by enzymatic digestion of the polysaccharides in D2 O and analyzed by MALDI time-of-flight mass spectrometry (TOF MS) using 2,5-dihydroxybenzoic acid (DHB) and 9-aminoacridine (9-AA) according to previously published protocols. RESULTS The extent of deuteration of a given compound can be easily determined by using the mass shift between the non-deuterated and deuterated ions. However, such a determination is more difficult when considering sugars due to their high content of exchangeable groups. Therefore, both the solvent and the matrix have a considerable impact on the MS patterns. Additionally, there are significant differences if the spectra are recorded at different laser fluences. CONCLUSIONS Great caution should be taken when the deuterium content of disaccharides is determined by MALDI MS. Aside from the use of non-protic solvents, DHB is the matrix of choice, whereas 9-AA shows a considerable influence on the observed isotope pattern in dependence on the applied laser fluence. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Ariane Nimptsch
- University of Leipzig, Medical Faculty, Institute of Medical Physics and Biophysics, Härtelstraße 16-18, D-04107, Leipzig, Germany.
| | - Jürgen Schiller
- University of Leipzig, Medical Faculty, Institute of Medical Physics and Biophysics, Härtelstraße 16-18, D-04107, Leipzig, Germany
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21
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Ropartz D, Li P, Fanuel M, Giuliani A, Rogniaux H, Jackson GP. Charge Transfer Dissociation of Complex Oligosaccharides: Comparison with Collision-Induced Dissociation and Extreme Ultraviolet Dissociative Photoionization. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2016; 27:1614-9. [PMID: 27582116 DOI: 10.1007/s13361-016-1453-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 07/11/2016] [Accepted: 07/12/2016] [Indexed: 05/04/2023]
Abstract
The structural characterization of oligosaccharides still challenges the field of analytical chemistry. Tandem mass spectrometry offers many advantages toward this aim, although the generic fragmentation method (low-energy collision-induced dissociation) shows clear limitations and is often insufficient to retrieve some essential structural information on these molecules. In this work, we present the first application of helium charge transfer dissociation (He-CTD) to characterize the structure of complex oligosaccharides. We compare this method with low-energy collision-induced dissociation and extreme-ultraviolet dissociative photoionization (XUV-DPI), which was shown previously to ensure the successful characterization of complex glycans. Similarly to what could be obtained by XUV-DPI, He-CTD provides a complete description of the investigated structures by producing many informative cross-ring fragments and no ambiguous fragmentation. Unlike XUV-DPI, which is performed at a synchrotron source, He-CTD has the undeniable advantage of being implementable in a conventional benchtop ion trap in a conventional laboratory setting. Graphical Abstract ᅟ.
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Affiliation(s)
- David Ropartz
- INRA, UR1268 Biopolymers Interactions Assemblies, 44316, Nantes, France
| | - Pengfei Li
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26506, USA
| | - Mathieu Fanuel
- INRA, UR1268 Biopolymers Interactions Assemblies, 44316, Nantes, France
| | - Alexandre Giuliani
- Synchrotron SOLEIL, L'Orme des Merisiers, 91190, Gif-sur-Yvette, France
- UAR 1008 CEPIA, INRA, 44316, Nantes, France
| | - Hélène Rogniaux
- INRA, UR1268 Biopolymers Interactions Assemblies, 44316, Nantes, France.
| | - Glen P Jackson
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV, 26506, USA
- Department of Forensic and Investigative Science, West Virginia University, Morgantown, WV, 26506-6121, USA
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22
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Agyekum I, Patel AB, Zong C, Boons GJ, Amster J. Assignment Of Hexuronic Acid Stereochemistry In Synthetic Heparan Sulfate Tetrasaccharides With 2- O-Sulfo Uronic Acids Using Electron Detachment Dissociation. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 2015; 390:163-169. [PMID: 26612977 PMCID: PMC4655891 DOI: 10.1016/j.ijms.2015.08.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The present work focuses on the assignment of uronic acid stereochemistry in heparan sulfate (HS) oligomers. The structural elucidation of HS glycosaminoglycans is the subject of considerable importance due to the biological and biomedical significance of this class of carbohydrates. They are highly heterogeneous due to their non-template biosynthesis. Advances in tandem mass spectrometry activation methods, particularly electron detachment dissociation (EDD), has led to the development of methods to assign sites of sulfo modification in glycosaminoglycan oligomers, but there are few reports of the assignment of uronic acid stereochemistry, necessary to distinguish glucuronic acid (GlcA) from iduronic acid (IdoA). Whereas preceding studies focused on uronic acid epimers with no sulfo modification, the current work extends the assignment of the hexuronic acid stereochemistry to 2-O-sulfo uronic acid epimeric tetrasaccharides. The presence of a 2-O-sulfo group on the central uronic acid was found to greatly influence the formation of B3, C2, Z2, and Y1 ions in glucuronic acid and Y2 and 1,5X2 for iduronic acid. The intensity of these peaks can be combined to yield a diagnostic ratios (DR), which can be used to confidently assign the uronic acid stereochemistry.
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Affiliation(s)
- Isaac Agyekum
- University of Georgia, Department of Chemistry, Athens, GA
| | - Anish B Patel
- University of Georgia, Department of Chemistry, Athens, GA
| | - Chengli Zong
- University of Georgia, Complex Carbohydrate Research Center, Athens, GA, United States
| | - Geert-Jan Boons
- University of Georgia, Complex Carbohydrate Research Center, Athens, GA, United States
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23
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Kailemia MJ, Patel AB, Johnson DT, Li L, Linhardt RJ, Amster IJ. Differentiating chondroitin sulfate glycosaminoglycans using collision-induced dissociation; uronic acid cross-ring diagnostic fragments in a single stage of tandem mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2015; 21:275-85. [PMID: 26307707 PMCID: PMC4552082 DOI: 10.1255/ejms.1366] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The stereochemistry of the hexuronic acid residues of the structure of glycosaminoglycans (GAGs) is a key feature that affects their interactions with proteins and other biological functions. Electron based tandem mass spectrometry methods, in particular electron detachment dissociation (EDD), have been able to distinguish glucuronic acid (GlcA) from iduronic acid (IdoA) residues in some heparan sulfate tetrasaccharides by producing epimer-specific fragments. Similarly, the relative abundance of glycosidic fragment ions produced by collision-induced dissociation (CID) or EDD has been shown to correlate with the type of hexuronic acid present in chondroitin sulfate GAGs. The present work examines the effect of charge state and degree of sodium cationization on the CID fragmentation products that can be used to distinguish GlcA and IdoA containing chondroitin sulfate A and dermatan sulfate chains. The cross-ring fragments (2,4)A(n) and (0,2)X(n) formed within the hexuronic acid residues are highly preferential for chains containing GlcA, distinguishing it from IdoA. The diagnostic capability of the fragments requires the selection of a molecular ion and fragment ions with specific ionization characteristics, namely charge state and number of ionizable protons. The ions with the appropriate characteristics display diagnostic properties for all the chondroitin sulfate and dermatan sulfate chains (degree of polymerization of 4-10) studied.
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Affiliation(s)
| | - Anish B Patel
- De partment of Chemistry, University of Georgia, Athens, GA 30602, USA.
| | - Dane T Johnson
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA.
| | - Lingyun Li
- Department of Chemistry and Chemical Biology, Chemical and Biological Engineering, and Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
| | - Robert J Linhardt
- Department of Chemistry and Chemical Biology, Chemical and Biological Engineering, and Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
| | - I Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA.
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Structural analysis of isomeric chondroitin sulfate oligosaccharides using regioselective 6-O-desulfation method and tandem mass spectrometry. Anal Chim Acta 2014; 843:27-37. [DOI: 10.1016/j.aca.2014.07.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 07/17/2014] [Accepted: 07/20/2014] [Indexed: 01/24/2023]
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25
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Xue J, Laine RA, Matta KL. Enhancing MS(n) mass spectrometry strategy for carbohydrate analysis: A b2 ion spectral library. J Proteomics 2014; 112:224-49. [PMID: 25175058 DOI: 10.1016/j.jprot.2014.07.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 06/24/2014] [Accepted: 07/12/2014] [Indexed: 11/24/2022]
Abstract
UNLABELLED Searchable mass spectral libraries for glycans may be enhanced using a B2 ion library. Using a quadrupole ion-trap mass spectrometer, successive fragmentations of sodiated oligosaccharides were carried out in the positive ion mode. In B,Y-type fragmentation, disaccharide B2 ions are generated which correspond to specific glycosidic linkages using progressive MS stages. Fragmentation of "B2 ions" corresponding to glycosidic linkages such as Hex-Fuc, Hex-Hex, Hex-HexNAc, HexNAc-Hex and HexNAc-HexNAc, were systematically studied in low energy CID and collected to form a "B2 library". Linkages produce characteristic fragmentation patterns in the absence of cross-ring fragmentation. Patterns of "B2 ions" rely on relative stability of glycosidic bonds and carbohydrate-metal complexes in the gas phase. MS(n) studies of linear, branched trisaccharides and tetrasaccharides show that isomers for which B2 ion information is not available are rarely a problem in practice by their absence in an isomeric sequence or by their scarcity in nature. This MS strategy for linkage determination of carbohydrates aided by a "B2 library" was developed with a scope for expansion, providing an improved tool for glycomics. We validated this method examining levels of expressed activities of two glycosyl transferases in cancer cell lines: β3(B3GALNT2) and β4GalNAcT(B4GALNT3&4) that generate GalNAcβ3GlcNAcβ and GalNAcβ4GlcNAcβ. BIOLOGICAL SIGNIFICANCE Glycosylation is an important class of the "postranslationome", which includes manifold aspects of post-translational protein modification, affecting protein conformation, providing ligands for protein receptors [1-5], and encoding unique haptenic [6,7] or antigenic markers for oncology [8-11] and other applications. Identification of individual monomeric units, linkages, ring size, branching and anomerity has posed significant challenges to mass spectrometrists. MS(n) is a growing key instrumental method to differentiate among isomers [12]. While the potential isomers in oligosaccharides are impossibly large [12], likely possibilities can be limited by the biological system, including the expressed glycosyl transferases [13-20]. Mass spectra from sequential stages of collision activation (MS(n)) can supply structural details for precise characterization of linkage, monomer ID, substitutions, anomerity and branching [21-25]. There is a fundamental need for high throughput tools in glycomics to complement proteome studies. In that regard, nothing could be more important than searchable spectral library files for structural confirmation. The National Academy of Science (NAS) report (http://glyco.nas.edu) recommends the need of more than 10,000 synthetic structures of carbohydrates to advance the field of glycomics. This study demonstrates that the general reproducibility of ion trap spectra, and energy independence from modes of ionization and collisional activation, make compiling an MS(n) library for carbohydrate identification an achievable research target [26]. We intend to use the new B2 library for carbohydrate differences found on cancers, where we profile the glycosyltransferases to predict classes of potential structures, and use the library for MS identification of the expected cohort of altered structures.
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Affiliation(s)
- Jun Xue
- Department of Cancer Biology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA
| | - Roger A Laine
- Departments of Biological Sciences and Chemistry, Louisiana State University and A&M College, Baton Rouge, LA 70803, USA; TumorEnd, LLC, Louisiana Emerging Technology Center, Baton Rouge, LA 70803, USA.
| | - Khushi L Matta
- Department of Cancer Biology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA; TumorEnd, LLC, Louisiana Emerging Technology Center, Baton Rouge, LA 70803, USA.
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26
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Schiller J, Huster D. New methods to study the composition and structure of the extracellular matrix in natural and bioengineered tissues. BIOMATTER 2014; 2:115-31. [PMID: 23507863 PMCID: PMC3549865 DOI: 10.4161/biom.20866] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The extracellular matrix (ECM) comprises a gel of numerous biopolymers that occurs in a multitude of biological tissues. The ECM provides the basic support and mechanical strength of skeletal tissue and is responsible for shape retention. At the same time, the ECM is responsible for the viscoelastic properties and the elasticity of soft tissues. As expected, there are several important diseases that affect and degenerate the ECM with severe consequences for its properties. Bioengineering is a promising approach to support the regenerative capacity of the body. Unfortunately, the biomechanical properties of bioengineered ECM often only poorly meet the standards of their native counterparts. Many bioengineered tissues are characterized by an increased glycosaminoglycan (GAG) but decreased collagen content. This leads to an enhanced water content that strongly alters the viscoelastic and thus the biomechanical properties. Therefore, compositional analysis is important to estimate the tissue quality. We will show that nuclear magnetic resonance (NMR) spectroscopy and soft-ionization mass spectrometry (MS) represent useful techniques for ECM research both in natural and bioengineered tissues. Both methods are strongly complimentary: while MS techniques such as matrix-assisted laser desorption and ionization (MALDI) are excellent and very sensitive analytical tools to determine the collagen and the GAG contents of tissues, NMR spectroscopy provides insight into the molecular architecture of the ECM, its dynamics and other important parameters such as the water content of the tissue as well as the diffusion of molecules within the ECM.
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Affiliation(s)
- Jürgen Schiller
- University of Leipzig, Medical Faculty, Institute of Medical Physics and Biophysics, Leipzig, Germany.
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27
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Kailemia MJ, Park M, Kaplan DA, Venot A, Boons GJ, Li L, Linhardt RJ, Amster IJ. High-field asymmetric-waveform ion mobility spectrometry and electron detachment dissociation of isobaric mixtures of glycosaminoglycans. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:258-68. [PMID: 24254578 PMCID: PMC3946938 DOI: 10.1007/s13361-013-0771-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/09/2013] [Accepted: 10/09/2013] [Indexed: 05/20/2023]
Abstract
High-field asymmetric waveform ion mobility spectrometry (FAIMS) is shown to be capable of resolving isomeric and isobaric glycosaminoglycan negative ions and to have great utility for the analysis of this class of molecules when combined with Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) and tandem mass spectrometry. Electron detachment dissociation (EDD) and other ion activation methods for tandem mass spectrometry can be used to determine the sites of labile sulfate modifications and for assigning the stereochemistry of hexuronic acid residues of glycosaminoglycans (GAGs). However, mixtures with overlapping mass-to-charge values present a challenge, as their precursor species cannot be resolved by a mass analyzer prior to ion activation. FAIMS is shown to resolve two types of mass-to-charge overlaps. A mixture of chondroitin sulfate A (CSA) oligomers with 4-10 saccharides units produces ions of a single mass-to-charge by electrospray ionization, as the charge state increases in direct proportion to the degree of polymerization for these sulfated carbohydrates. FAIMS is shown to resolve the overlapping charge. A more challenging type of mass-to-charge overlap occurs for mixtures of diastereomers. FAIMS is shown to separate two sets of epimeric GAG tetramers. For the epimer pairs, the complexity of the separation is reduced when the reducing end is alkylated, suggesting that anomers are also resolved by FAIMS. The resolved components were activated by EDD and the fragment ions were analyzed by FTICR-MS. The resulting tandem mass spectra were able to distinguish the two epimers from each other.
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Affiliation(s)
| | | | | | - Andre Venot
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Lingyun Li
- Department of Chemistry and Chemical Biology, Chemical and Biological Engineering, and Biology, Rensselaer Polytechnic Institute, Troy, NY 12180
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Chemical and Biological Engineering, and Biology, Rensselaer Polytechnic Institute, Troy, NY 12180
| | - I. Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, GA 30602
- Address for correspondence: Department of Chemistry, University of Georgia, Athens, GA 30602, Phone: (706) 542-2001, Fax: (706) 542-9454,
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28
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Kailemia MJ, Ruhaak LR, Lebrilla CB, Amster IJ. Oligosaccharide analysis by mass spectrometry: a review of recent developments. Anal Chem 2014; 86:196-212. [PMID: 24313268 PMCID: PMC3924431 DOI: 10.1021/ac403969n] [Citation(s) in RCA: 276] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | - L. Renee Ruhaak
- Department of Chemistry, University of California at Davis, Davis, CA 95616
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29
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Zhou W, Håkansson K. Electron capture dissociation of divalent metal-adducted sulfated N-glycans released from bovine thyroid stimulating hormone. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:1798-806. [PMID: 23982932 PMCID: PMC3867818 DOI: 10.1007/s13361-013-0700-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Revised: 07/03/2013] [Accepted: 07/06/2013] [Indexed: 05/04/2023]
Abstract
Sulfated N-glycans released from bovine thyroid stimulating hormone (bTSH) were ionized with the divalent metal cations Ca(2+), Mg(2+), and Co by electrospray ionization (ESI). These metal-adducted species were subjected to infrared multiphoton dissociation (IRMPD) and electron capture dissociation (ECD) and the corresponding fragmentation patterns were compared. IRMPD generated extensive glycosidic and cross-ring cleavages, but most product ions suffered from sulfonate loss. Internal fragments were also observed, which complicated the spectra. ECD provided complementary structural information compared with IRMPD, and all observed product ions retained the sulfonate group, allowing sulfonate localization. To our knowledge, this work represents the first application of ECD towards metal-adducted sulfated N-glycans released from a glycoprotein. Due to the ability of IRMPD and ECD to provide complementary structural information, the combination of the two strategies is a promising and valuable tool for glycan structural characterization. The influence of different metal ions was also examined. Calcium adducts appeared to be the most promising species because of high sensitivity and ability to provide extensive structural information.
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Affiliation(s)
- Wen Zhou
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - Kristina Håkansson
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA
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30
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Shi X, Shao C, Mao Y, Huang Y, Wu ZL, Zaia J. LC-MS and LC-MS/MS studies of incorporation of 34SO3 into glycosaminoglycan chains by sulfotransferases. Glycobiology 2013; 23:969-79. [PMID: 23696150 PMCID: PMC3695753 DOI: 10.1093/glycob/cwt033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 04/29/2013] [Accepted: 04/29/2013] [Indexed: 12/15/2022] Open
Abstract
The specificities of glycosaminoglycan (GAG) modification enzymes, particularly sulfotransferases, and the locations and concentrations of these enzymes in the Golgi apparatus give rise to the mature GAG polysaccharides that bind protein ligands. We studied the substrate specificities of sulfotransferases with a stable isotopically labeled donor substrate, 3'-phosphoadenosine-5'-phosphosulfate. The sulfate incorporated by in vitro sulfation using recombinant sulfotransferases was easily distinguished from those previously present on the GAG chains using mass spectrometry. The enrichment of the [M + 2] isotopic peak caused by (34)S incorporation, and the [M + 2]/[M + 1] ratio, provided reliable and sensitive measures of the degree of in vitro sulfation. It was found that both CHST3 and CHST15 have higher activities at the non-reducing end (NRE) units of chondroitin sulfate, particularly those terminating with a GalNAc monosaccharide. In contrast, both NDST1 and HS6ST1 showed lower activities at the NRE of heparan sulfate (HS) chains than at the interior of the chain. Contrary to the traditional view of HS biosynthesis processes, NDST1 also showed activity on O-sulfated GlcNAc residues.
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Affiliation(s)
- Xiaofeng Shi
- Department of Biochemistry and Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany St., Rm. 509, Boston, MA 02118, USA
| | - Chun Shao
- Department of Biochemistry and Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany St., Rm. 509, Boston, MA 02118, USA
| | - Yang Mao
- Department of Biochemistry and Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany St., Rm. 509, Boston, MA 02118, USA
| | - Yu Huang
- Department of Biochemistry and Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany St., Rm. 509, Boston, MA 02118, USA
| | - Zhengliang L Wu
- R&D Systems, Inc., 614 McKinley Place N.E., Minneapolis, MN 55413, USA
| | - Joseph Zaia
- Department of Biochemistry and Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany St., Rm. 509, Boston, MA 02118, USA
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31
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Flangea C, Petrescu AJ, Seidler DG, Munteanu CVA, Zamfir AD. Identification of an unusually sulfated tetrasaccharide chondroitin/dermatan motif in mouse brain by combining chip-nanoelectrospray multistage MS2-MS4and high resolution MS. Electrophoresis 2013; 34:1581-92. [DOI: 10.1002/elps.201200704] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Revised: 01/31/2013] [Accepted: 02/04/2013] [Indexed: 01/06/2023]
Affiliation(s)
| | | | - Daniela G. Seidler
- Institute for Physiological Chemistry and Pathobiochemistry; University of Münster; Münster; Germany
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32
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Kailemia MJ, Li L, Xu Y, Liu J, Linhardt RJ, Amster IJ. Structurally informative tandem mass spectrometry of highly sulfated natural and chemoenzymatically synthesized heparin and heparan sulfate glycosaminoglycans. Mol Cell Proteomics 2013; 12:979-90. [PMID: 23429520 PMCID: PMC3617343 DOI: 10.1074/mcp.m112.026880] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 02/19/2013] [Indexed: 01/20/2023] Open
Abstract
The highly sulfated glycosaminoglycan oligosaccharides derived from heparin and heparan sulfate have been a highly intractable class of molecules to analyze by tandem mass spectrometry. Under the many methods of ion activation, this class of molecules generally exhibits SO3 loss as the most significant fragmentation pathway, interfering with the assignment of the location of sulfo groups in glycosaminoglycan chains. We report here a method that stabilizes sulfo groups and facilitates the complete structural analysis of densely sulfated (two or more sulfo groups per disaccharide repeat unit) heparin and heparan sulfate oligomers. This is achieved by complete removal of all ionizable protons, either by charging during electrospray ionization or by Na(+)/H(+) exchange. The addition of millimolar levels of NaOH to the sample solution facilitates the production of precursor ions that meet this criterion. This approach is found to work for a variety of heparin sulfate oligosaccharides derived from natural sources or produced by chemoenzymatic synthesis, with up to 12 saccharide subunits and up to 11 sulfo groups.
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Affiliation(s)
- Muchena J. Kailemia
- From the ‡Department of Chemistry, University of Georgia, Athens, Georgia 30602
| | - Lingyun Li
- the §Department of Chemistry and Chemical Biology, Chemical and Biological Engineering, and Biology, Rensselaer Polytechnic Institute, Troy, New York 12180, and
| | - Yongmei Xu
- the ¶Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599
| | - Jian Liu
- the ¶Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599
| | - Robert J. Linhardt
- the §Department of Chemistry and Chemical Biology, Chemical and Biological Engineering, and Biology, Rensselaer Polytechnic Institute, Troy, New York 12180, and
| | - I. Jonathan Amster
- From the ‡Department of Chemistry, University of Georgia, Athens, Georgia 30602
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33
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Leach FE, Arungundram S, Al-Mafraji K, Venot A, Boons GJ, Amster IJ. ELECTRON DETACHMENT DISSOCIATION OF SYNTHETIC HEPARAN SULFATE GLYCOSAMINOGLYCAN TETRASACCHARIDES VARYING IN DEGREE OF SULFATION AND HEXURONIC ACID STEREOCHEMISTRY. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 2012; 330-332:152-159. [PMID: 23230388 PMCID: PMC3517180 DOI: 10.1016/j.ijms.2012.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Glycosaminoglycan (GAG) carbohydrates provide a challenging analytical target for structural determination due to their polydisperse nature, non-template biosynthesis, and labile sulfate modifications. The resultant structures, although heterogeneous, contain domains which indicate a sulfation pattern or code that correlates to specific function. Mass spectrometry, in particular electron detachment dissociation Fourier transform ion cyclotron resonance (EDD FT-ICR MS), provides a highly sensitive platform for GAG structural analysis by providing cross-ring cleavages for sulfation location and product ions specific to hexuronic acid stereochemistry. To investigate the effect of sulfation pattern and variations in stereochemistry on EDD spectra, a series of synthetic heparan sulfate (HS) tetrasaccharides are examined. Whereas previous studies have focused on lowly sulfated compounds (0.5-1 sulfate groups per disaccharide), the current work extends the application of EDD to more highly sulfated tetrasaccharides (1-2 sulfate groups per disaccharide) and presents the first EDD of a tetrasaccharide containing a sulfated hexuronic acid. For these more highly sulfated HS oligomers, alternative strategies are shown to be effective for extracting full structural details. These strategies inlcude sodium cation replacement of protons, for determining the sites of sulfation, and desulfation of the oligosaccharides for the generation of product ions for assigning uronic acid stereochemistry.
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Affiliation(s)
| | - Sailaja Arungundram
- University of Georgia, Department of Chemistry, Athens, GA 30602
- University of Georgia, Complex Carbohydrate Research Center, Athens, GA
| | - Kanar Al-Mafraji
- University of Georgia, Department of Chemistry, Athens, GA 30602
- University of Georgia, Complex Carbohydrate Research Center, Athens, GA
| | - Andre Venot
- University of Georgia, Complex Carbohydrate Research Center, Athens, GA
| | - Geert-Jan Boons
- University of Georgia, Department of Chemistry, Athens, GA 30602
- University of Georgia, Complex Carbohydrate Research Center, Athens, GA
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34
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Nishikaze T, Kaneshiro K, Kawabata SI, Tanaka K. Structural Analysis of N-Glycans by the Glycan-Labeling Method Using 3-Aminoquinoline-Based Liquid Matrix in Negative-Ion MALDI-MS. Anal Chem 2012; 84:9453-61. [DOI: 10.1021/ac302286e] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Takashi Nishikaze
- Koichi Tanaka Laboratory of Advanced Science
and Technology, Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho, Nakagyo-ku, Kyoto 604-8511, Japan
| | - Kaoru Kaneshiro
- Koichi Tanaka Laboratory of Advanced Science
and Technology, Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho, Nakagyo-ku, Kyoto 604-8511, Japan
| | - Shin-ichirou Kawabata
- Koichi Tanaka Laboratory of Advanced Science
and Technology, Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho, Nakagyo-ku, Kyoto 604-8511, Japan
| | - Koichi Tanaka
- Koichi Tanaka Laboratory of Advanced Science
and Technology, Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho, Nakagyo-ku, Kyoto 604-8511, Japan
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35
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Leach FE, Ly M, Laremore TN, Wolff JJ, Perlow J, Linhardt RJ, Amster IJ. Hexuronic acid stereochemistry determination in chondroitin sulfate glycosaminoglycan oligosaccharides by electron detachment dissociation. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2012; 23:1488-97. [PMID: 22825742 PMCID: PMC3875141 DOI: 10.1007/s13361-012-0428-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 05/31/2012] [Accepted: 06/01/2012] [Indexed: 05/03/2023]
Abstract
Electron detachment dissociation (EDD) has previously provided stereo-specific product ions that allow for the assignment of the acidic C-5stereochemistry in heparan sulfate glycosaminoglycans (GAGs), but application of the same methodology to an epimer pair in the chondroitin sulfate glycoform class does not provide the same result. A series of experiments have been conducted in which glycosaminoglycan precursor ions are independently activated by electron detachment dissociation (EDD), electron induced dissociation (EID), and negative electron transfer dissociation (NETD) to assign the stereochemistry in chondroitin sulfate (CS) epimers and investigate the mechanisms for product ion formation during EDD in CS glycoforms. This approach allows for the assignment of electronic excitation products formed by EID and detachment products to radical pathways in NETD, both of which occur simultaneously during EDD. The uronic acid stereochemistry in electron detachment spectra produces intensity differences when assigned glycosidic and cross-ring cleavages are compared. The variations in the intensities of the doubly deprotonated (0,2)X(3) and Y(3) ions have been shown to be indicative of CS-A/DS composition during the CID of binary mixtures. These ions can provide insight into the uronic acid composition of binary mixtures in EDD, but the relative abundances, although reproducible, are low compared with those in a CID spectrum acquired on an ion trap. The application of principal component analysis (PCA) presents a multivariate approach to determining the uronic acid stereochemistry spectra of these GAGs by taking advantage of the reproducible peak distributions produced by electron detachment.
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Affiliation(s)
- Franklin E. Leach
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA
| | - Mellisa Ly
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- Agilent Technologies, Santa Clara, CA 95051, USA
| | - Tatiana N. Laremore
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | | | - Jacob Perlow
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
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36
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Kailemia MJ, Li L, Ly M, Linhardt RJ, Amster IJ. Complete mass spectral characterization of a synthetic ultralow-molecular-weight heparin using collision-induced dissociation. Anal Chem 2012; 84:5475-8. [PMID: 22715938 PMCID: PMC4477280 DOI: 10.1021/ac3015824] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Glycosaminoglycans (GAGs) are a class of biologically important molecules, and their structural analysis is the target of considerable research effort. Advances in tandem mass spectrometry (MS/MS) have recently enabled the structural characterization of several classes of GAGs; however, the highly sulfated GAGs, such as heparins, have remained a relatively intractable class due their tendency to lose SO(3) during MS/MS, producing few sequence-informative fragment ions. The present work demonstrates for the first time the complete structural characterization of the highly sulfated heparin-based drug Arixtra. This was achieved by Na(+)/H(+) exchange to create a more ionized species that was stable against SO(3) loss, and that produced complete sets of both glycosidic and cross-ring fragment ions. MS/MS enables the complete structural determination of Arixtra, including the stereochemistry of its uronic acid residues, and suggests an approach for solving the structure of more complex, highly sulfated heparin-based drugs.
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37
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Abstract
Proteoglycans (PGs) are among the most structurally complex biomacromolecules in nature. They are present in all animal cells and frequently exert their critical biological functions through interactions with protein ligands and receptors. PGs are comprised of a core protein to which one or multiple, heterogeneous, and polydisperse glycosaminoglycan (GAG) chains are attached. Proteins, including the protein core of PGs, are now routinely sequenced either directly using proteomics or indirectly using molecular biology through their encoding DNA. The sequencing of the GAG component of PGs poses a considerably more difficult challenge because of the relatively underdeveloped state of glycomics and because the control of their biosynthesis in the endoplasmic reticulum and the Golgi is poorly understood and not believed to be template driven. Recently, the GAG chain of the simplest PG has been suggested to have a defined sequence based on its top-down Fourier transform mass spectral sequencing. This review examines the advances made over the past decade in the sequencing of GAG chains and the challenges the field face in sequencing complex PGs having critical biological functions in developmental biology and pathogenesis.
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Affiliation(s)
- Lingyun Li
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA; Fax: +1 518-276-3405; Tel: +1 518-276-3404
| | - Mellisa Ly
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA; Fax: +1 518-276-3405; Tel: +1 518-276-3404
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA; Fax: +1 518-276-3405; Tel: +1 518-276-3404
- Department of Biology, Chemical and Biological Engineering and Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York, 12180, USA
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38
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Leymarie N, McComb ME, Naimy H, Staples GO, Zaia J. Differential Characterization and Classification of Tissue Specific Glycosaminoglycans by Tandem Mass Spectrometry and Statistical Methods. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 2012; 312:144-154. [PMID: 22523474 PMCID: PMC3329220 DOI: 10.1016/j.ijms.2011.07.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The biological functions of glycoconjugate glycans arise in the context of structural heterogeneity resulting from non-template driven biosynthetic reactions. Such heterogeneity is particularly apparent for the glycosaminoglycan (GAG) classes, of which heparan sulfate (HS) is of particular interest for its properties in binding to many classes of growth factors and growth factor receptors. The structures of HS chains vary according to spatial and temporal factors in biological systems as a mechanism where by the functions of the relatively limited number of associated proteoglycan core proteins is elaborated. Thus, there is a strong driver for the development of methods to discover functionally relevant structures in HS preparations for different sources. In the present work, a set of targeted tandem mass spectra were acquired in automated mode on HS oligosaccharides deriving from two different tissue sources. Statistical methods were used to determine the precursor and product ions, the abundances of which differentiate between the tissue sources. The results demonstrate considerable potential for using this approach to constrain the number of positional glycoform isomers present in different biological preparations toward the end of discovery of functionally relevant structures.
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Affiliation(s)
- Nancy Leymarie
- Center for Biomedical Mass Spectrometry, Dept. of Biochemistry, Boston University, Boston, MA
| | - Mark E. McComb
- Center for Biomedical Mass Spectrometry, Dept. of Medicine, Boston University, Boston, MA
| | - Hicham Naimy
- Center for Biomedical Mass Spectrometry, Dept. of Biochemistry, Boston University, Boston, MA
| | - Gregory O. Staples
- Center for Biomedical Mass Spectrometry, Dept. of Biochemistry, Boston University, Boston, MA
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry, Dept. of Biochemistry, Boston University, Boston, MA
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39
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Abstract
Proteoglycans are complex glycoconjugates that regulate critical biological pathways in all higher organisms. Bikunin, the simplest proteoglycan having a single glycosaminoglycan chain, is a serine protease inhibitor used to treat acute pancreatitis. Unlike the template driven synthesis of nucleic acids and proteins, Golgi synthesized glycosaminoglycans are not believed to have predictable or deterministic sequence. Bikunin peptidoglycosaminoglycans were prepared and fractionated to obtain a collection of size similar and charge similar chains. Fourier transform mass spectral analysis identified a small number of parent molecular-ions corresponding to mono-compositional peptidoglycosaminoglycans. Fragmentation using collision induced dissociation surprisingly afforded a single sequence for each mono-compositional parent-ion, unequivocally demonstrating the presence of a defined sequence. The common biosynthetic pathway for all proteoglycans suggests that even more structurally complex proteoglycans, such as heparan sulfate, may have defined sequences, requiring a readjustment of our understanding of information storage in complex glycans.
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40
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Kenny DT, Issa SMA, Karlsson NG. Sulfate migration in oligosaccharides induced by negative ion mode ion trap collision-induced dissociation. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:2611-8. [PMID: 23657955 DOI: 10.1002/rcm.5157] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Revised: 06/16/2011] [Accepted: 06/18/2011] [Indexed: 05/12/2023]
Abstract
Migration of sulfate groups between hydroxyl groups was identified after collision-induced dissociation (CID) of sulfated oligosaccharides in an ion trap mass spectrometer in negative ion mode. Analysis of various sulfated oligosaccharides showed that this was a common phenomenon and was particularly prominent in sulfated oligosaccharides also containing sialic acid. It was also shown that the level of migration was increased when the sulfate was positioned on the flexible areas of the oligosaccharides not involved in the pyranose ring, such as the extra-cyclic C-6 carbon of hexoses or N-acetylhexosamines, or on reduced oligosaccharide. This suggested that migration is dependent on the spatial availability of the sulfate in the ion trap during collision. It is proposed that the migration is initiated when the negatively charged -SO3 (-) residue attached to the oligosaccharide precursor becomes protonated by a CID-induced proton transfer. This is supported by the CID fragmentation of precursor ions depleted of acidic protons such as doubly charged [M - 2H](2-) ions or the sodiated [M + Na - 2H](-) ions of oligosaccharides containing one sulfate and one sialic acid in the same molecule. Compared to the CID fragmentation of their monocharged [M - H](-) ions, no migration was observed in CID of proton depleted precursors. Alternative fragmentation parameters to suppress migration of sulfated oligosaccharides also showed that it was not present when sulfated oligosaccharides were fragmented by HCD (High-Energy C-trap Dissociation) in an Orbitrap mass spectrometer.
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Affiliation(s)
- Diarmuid T Kenny
- School of Chemistry, National University of Ireland, Galway, Ireland
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41
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Zamfir AD, Flangea C, Sisu E, Seidler DG, Peter-Katalinić J. Combining size-exclusion chromatography and fully automated chip-based nanoelectrospray quadrupole time-of-flight tandem mass spectrometry for structural analysis of chondroitin/dermatan sulfate in human decorin. Electrophoresis 2011; 32:1639-46. [PMID: 21647927 DOI: 10.1002/elps.201100094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 03/21/2011] [Accepted: 03/22/2011] [Indexed: 11/07/2022]
Abstract
Chondroitin/dermatan sulfate (CS/DS) chain of decorin (DCN) from human skin fibroblasts (HSk) was released by reductive β-elimination reaction and digested with chondroitin AC I lyase. Enzymatic hydrolysis mixture of CS/DS chains was separated by size-exclusion chromatography (SEC). Collected octasaccharide fraction was subjected to fully automated chip-based nanoelectrospray (nanoESI) quadrupole time-of-flight (QTOF) MS and tandem MS (MS/MS). MS of human skin fibroblasts DCN CS/DS displayed a high complexity due to the large variety of glycoforms, which under chip-nanoESI MS readily ionized to form multiply charged ions. Except for the regularly tetrasulfated octasaccharide, the investigated fraction contained four additional octasaccharides of atypical sulfation status. Two new oversulfated glycoforms and two undersulfated species were identified. Remarkably, the series of decasaccharides discovered in the same SEC pool was found to encompass a trisulfated and a novel hexasulfated [4,5-Δ-GlcAGalNAc(IdoAGalNAc)⁴] species. MS/MS by collision-induced dissociation (CID) on the [M-4H]⁴ ion corresponding to the previously not reported [4,5-Δ-GlcAGalNAc(IdoAGalNAc)₃](5S) corroborated for a novel motif in which three N-acetylgalactosamine (GalNAc) moieties are monosulfated, 4,5-Δ-GlcA and the first IdoA from the non-reducing end bear one sulfate group each, while the second N-acetylgalactosamine from the reducing end is unsulfated.
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Affiliation(s)
- Alina D Zamfir
- Department of Chemical and Biological Sciences, Aurel Vlaicu University of Arad, Arad, Romania.
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42
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Oh HB, Leach FE, Arungundram S, Al-Mafraji K, Venot A, Boons GJ, Amster IJ. Multivariate analysis of electron detachment dissociation and infrared multiphoton dissociation mass spectra of heparan sulfate tetrasaccharides differing only in hexuronic acid stereochemistry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2011; 22:582-90. [PMID: 21472576 PMCID: PMC3192014 DOI: 10.1007/s13361-010-0047-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 11/17/2010] [Accepted: 11/17/2010] [Indexed: 05/09/2023]
Abstract
The structural characterization of glycosaminoglycan (GAG) carbohydrates by mass spectrometry has been a long-standing analytical challenge due to the inherent heterogeneity of these biomolecules, specifically polydispersity, variability in sulfation, and hexuronic acid stereochemistry. Recent advances in tandem mass spectrometry methods employing threshold and electron-based ion activation have resulted in the ability to determine the location of the labile sulfate modification as well as assign the stereochemistry of hexuronic acid residues. To facilitate the analysis of complex electron detachment dissociation (EDD) spectra, principal component analysis (PCA) is employed to differentiate the hexuronic acid stereochemistry of four synthetic GAG epimers whose EDD spectra are nearly identical upon visual inspection. For comparison, PCA is also applied to infrared multiphoton dissociation spectra (IRMPD) of the examined epimers. To assess the applicability of multivariate methods in GAG mixture analysis, PCA is utilized to identify the relative content of two epimers in a binary mixture.
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Affiliation(s)
- Han Bin Oh
- Department of Chemistry, Sogang University, Seoul 121-742, Korea (200811036)
| | - Franklin E. Leach
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA
| | - Sailaja Arungundram
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - Kanar Al-Mafraji
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - Andre Venot
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - Geert-Jan Boons
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - I. Jonathan Amster
- Department of Chemistry, University of Georgia, Athens, GA 30602, USA
- Address reprint requests to Dr. I. Jonathan Amster, Department of Chemistry, University of Georgia, Athens, GA 30602, USA () and Dr. Han Bin Oh, Department of Chemistry, Sogang University, Seoul, 121-742, Korea, (), Phone: 706-542-2001, Fax: 706-542-9454
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43
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Abstract
The glycosaminoglycans (GAGs) are linear polysaccharides expressed on animal cell surfaces and in extracellular matrices. Their biosynthesis is under complex control and confers a domain structure that is essential to their ability to bind to protein partners. Key to understanding the functions of GAGs are methods to determine accurately and rapidly patterns of sulfation, acetylation and uronic acid epimerization that correlate with protein binding or other biological activities. Mass spectrometry (MS) is particularly suitable for the analysis of GAGs for biomedical purposes. Using modern ionization techniques it is possible to accurately determine molecular weights of GAG oligosaccharides and their distributions within a mixture. Methods for direct interfacing with liquid chromatography have been developed to permit online mass spectrometric analysis of GAGs. New tandem mass spectrometric methods for fine structure determination of GAGs are emerging. This review summarizes MS-based approaches for analysis of GAGs, including tissue extraction and chromatographic methods compatible with LC/MS and tandem MS.
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Affiliation(s)
- Gregory O. Staples
- Center for Biomedical Mass Spectrometry, Dept. of Biochemistry, Boston University School of Medicine
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry, Dept. of Biochemistry, Boston University School of Medicine
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44
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Gonçalves AG, Ducatti DRB, Grindley TB, Duarte MER, Noseda MD. ESI-MS differential fragmentation of positional isomers of sulfated oligosaccharides derived from carrageenans and agarans. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2010; 21:1404-1416. [PMID: 20462767 DOI: 10.1016/j.jasms.2010.03.045] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Revised: 03/30/2010] [Accepted: 03/31/2010] [Indexed: 05/29/2023]
Abstract
We have prepared a number of isomeric red seaweed galactan-derivative sulfated oligosaccharides to determine whether there were diagnostic differences among the isomeric mass spectra obtained using ESI CID MS/MS (triple quadrupole instrument). Fragmentation of the single or multicharged molecular ions from di-, tetra-, and hexasaccharides indicated that the relative positioning of the sulfate groups and type of monosaccharide unit affect the rate of cleavage of the glycosidic bonds. We also performed a comparative [M-Na](-) fragmentation study of positional isomers of sulfated disaccharides that present all four monosulfation possibilities on the galactopyranosidic ring. In this case, negative-ion ESI CID MS/MS approach gave diagnostic product ions from cross-ring cleavages along with the same main B(1) ion (from sulfated Galp), at m/z 241, for all isomers. The isomeric disaccharides were also submitted to increased spray energy conditions inducing in-source fragmentation; preformed B(1) ions were then fragmented to give similar product ions as those found in [M-Na](-) analysis. Evaluation of the relative abundances mainly for cross-ring fragment ions at m/z 138, 139, 151, 153 allowed clear distinction among the members of the disaccharide series. The different ratios for m/z 151/153 ions were consistent with the predominance of m/z 153 being related to the cases when the bond involved in the cleavage process links a sulfated carbon. A quadrupole ion trap instrument (MS(n) analysis) was also utilized to compare the results obtained with the triple quadrupole instrument.
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Affiliation(s)
- Alan G Gonçalves
- Departamento de Farmácia, Universidade Federal do Paraná, Paraná, Brazil
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45
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Abstract
Glycosylation defines the adhesive properties of animal cell surfaces and the surrounding extracellular environments. Because cells respond to stimuli by altering glycan expression, glycan structures vary according to spatial location in tissue and temporal factors. These dynamic structural expression patterns, combined with the essential roles glycans play in physiology, drive the need for analytical methods for glycoconjugates. In addition, recombinant glycoprotein drug products represent a multibillion dollar market. Effective analytical methods are needed to speed the identification of new targets and the development of industrial glycoprotein products, both new and biosimilar. Mass spectrometry is an enabling technology in glycomics. This review summarizes mass spectrometry of glycoconjugate glycans. The intent is to summarize appropriate methods for glycans given their chemical properties as distinct from those of proteins, lipids, and small molecule metabolites. Special attention is given to the uses of mass spectral profiling for glycomics with respect to the N-linked, O-linked, ganglioside, and glycosaminoglycan compound classes. Next, the uses of tandem mass spectrometry of glycans are summarized. The review finishes with an update on mass spectral glycoproteomics.
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Affiliation(s)
- Joseph Zaia
- Department of Biochemistry, Boston University, Boston, Massachusetts, USA.
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46
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Nimptsch K, Süß R, Riemer T, Nimptsch A, Schnabelrauch M, Schiller J. Differently complex oligosaccharides can be easily identified by matrix-assisted laser desorption and ionization time-of-flight mass spectrometry directly from a standard thin-layer chromatography plate. J Chromatogr A 2010; 1217:3711-5. [DOI: 10.1016/j.chroma.2010.04.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Revised: 03/29/2010] [Accepted: 04/06/2010] [Indexed: 10/19/2022]
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47
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Bultel L, Landoni M, Grand E, Couto AS, Kovensky J. UV-MALDI-TOF mass spectrometry analysis of heparin oligosaccharides obtained by nitrous acid controlled degradation and high performance anion exchange chromatography. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2010; 21:178-190. [PMID: 19892568 DOI: 10.1016/j.jasms.2009.09.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Revised: 09/30/2009] [Accepted: 09/30/2009] [Indexed: 05/28/2023]
Abstract
Nitrous acid degradation of heparin followed by high-performance anion-exchange chromatography (HPAEC) separation and ultraviolet matrix assisted laser desorption/ionization time-of-flight (UV-MALDI-TOF) analysis led to the structural determination of six sulfated oligosaccharides. Three different matrices (alpha-cyano-4-hydroxycinnamic acid (CHCA), nor-harmane, and dihydroxybenzoic acid (DHB)) have been used, and the complementary results obtained allowed in most cases to assign the position of sulfate groups. Based on the different cleavages produced on the purified oligosaccharides in source during the MS analysis by the use of the different matrices, this approach provides a new tool for structural analysis.
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Affiliation(s)
- Laurent Bultel
- Laboratoire des Glucides CNRS UMR 6219, Institut de Chimie de Picardie, Université de Picardie Jules Verne, Amiens, France
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48
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Schenauer MR, Meissen JK, Seo Y, Ames JB, Leary JA. Heparan sulfate separation, sequencing, and isomeric differentiation: ion mobility spectrometry reveals specific iduronic and glucuronic acid-containing hexasaccharides. Anal Chem 2009; 81:10179-85. [PMID: 19925012 PMCID: PMC2810830 DOI: 10.1021/ac902186h] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We describe the resolution of heparan sulfate (HS) isomers by chromatographic methods and their subsequent differentiation by mass spectrometry (MS), ion mobility, and (1)H nuclear magnetic resonance (NMR) analysis. The two purified hexasaccharide isomers produced nearly identical MS spectra, quantitative disaccharide profiles, and partial enzymatic digestions. However, both tandem spectrometry (MS(2)) and ion mobility spectrometry (IMS) indicated structural differences existed. All data suggested the distinction between the two hexasaccharides resided in their uronic acid stereochemistries. Glucuronic (GlcA) and iduronic acids (IdoA) were subsequently defined by (1)H NMR analysis completing the structural analysis and verifying the unique structures initially indicated by MS(2) and IMS. Our results suggest that IMS may be a powerful tool in the rapid differentiation of GlcA and IdoA containing isomers in the absence of prior structural knowledge.
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Affiliation(s)
- Matthew R. Schenauer
- The Departments of Molecular and Cellular Biology, University of California, Davis, One Shields Avenue, Davis, CA 95616
| | - John K. Meissen
- The Departments of Molecular and Cellular Biology, University of California, Davis, One Shields Avenue, Davis, CA 95616
| | - Youjin Seo
- The Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616
| | - James B. Ames
- The Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616
| | - Julie A. Leary
- The Departments of Molecular and Cellular Biology, University of California, Davis, One Shields Avenue, Davis, CA 95616
- The Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, CA 95616
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49
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Solakyildirim K, Zhang Z, Linhardt RJ. Ultraperformance liquid chromatography with electrospray ionization ion trap mass spectrometry for chondroitin disaccharide analysis. Anal Biochem 2009; 397:24-8. [PMID: 19769936 DOI: 10.1016/j.ab.2009.09.031] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2009] [Revised: 09/12/2009] [Accepted: 09/16/2009] [Indexed: 10/20/2022]
Abstract
Chondroitin sulfate (CS) has an important role in cell division, in the central nervous system, and in joint-related pathologies such as osteoarthritis. Due to the complex chemical structure and biological importance of CS, simple, sensitive, high resolution, and robust analytical methods are needed for the analysis of CS disaccharides and oligosaccharides. An ion-pairing, reversed-phase, ultraperformance liquid chromatography (IPRP-UPLC) separation, coupled to electrospray ionization mass spectrometry with an ion trap mass analyzer, was applied for the analyses of CS-derived disaccharides. UPLC separation technology uses small particle diameter, short column length, and elevated column temperature to obtain high resolution and sensitivity. Hexylamine (15 mM) was selected as the optimal ion-pairing reagent.
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Affiliation(s)
- Kemal Solakyildirim
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
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50
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Abstract
Carbohydrates exhibit many physiologically and pharmacologically important activities, yet their complicated structure and sequence pose major analytical challenges. Although their structural complexity makes analysis of carbohydrate difficult, mass spectrometry (MS) with high sensitivity, resolution and accuracy has become a vital tool in many applications related to analysis of carbohydrates or oligosaccharides. This application is essentially based on soft ionization technique which facilitates the ionization and vaporization of large, polar and thermally labile biomolecules. Electrospray-ionization (ESI), one of the soft ionization technique, tandem MS has been used in the sequencing of peptides, proteins, lipids, nucleic acids and more recently carbohydrates. The development of the ESI and tandem MS has begun to make carbohydrate analysis more routine. This review will focus on the application of the ESI tandem MS for the sequence analysis of native oligosaccharides, including neutral saccharides with multiple linkages, and the uronic acid polymers, alginate and glycosaminoglycans structures containing epimers.
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Affiliation(s)
- Zhenqing Zhang
- Departments of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
| | - Robert J. Linhardt
- Departments of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York 12180, USA
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