1
|
Gass DT, Quintero AV, Hatvany JB, Gallagher ES. Metal adduction in mass spectrometric analyses of carbohydrates and glycoconjugates. MASS SPECTROMETRY REVIEWS 2024; 43:615-659. [PMID: 36005212 DOI: 10.1002/mas.21801] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Glycans, carbohydrates, and glycoconjugates are involved in many crucial biological processes, such as disease development, immune responses, and cell-cell recognition. Glycans and carbohydrates are known for the large number of isomeric features associated with their structures, making analysis challenging compared with other biomolecules. Mass spectrometry has become the primary method of structural characterization for carbohydrates, glycans, and glycoconjugates. Metal adduction is especially important for the mass spectrometric analysis of carbohydrates and glycans. Metal-ion adduction to carbohydrates and glycoconjugates affects ion formation and the three-dimensional, gas-phase structures. Herein, we discuss how metal-ion adduction impacts ionization, ion mobility, ion activation and dissociation, and hydrogen/deuterium exchange for carbohydrates and glycoconjugates. We also compare the use of different metals for these various techniques and highlight the value in using metals as charge carriers for these analyses. Finally, we provide recommendations for selecting a metal for analysis of carbohydrate adducts and describe areas for continued research.
Collapse
Affiliation(s)
- Darren T Gass
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas, USA
| | - Ana V Quintero
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas, USA
| | - Jacob B Hatvany
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas, USA
| | - Elyssia S Gallagher
- Department of Chemistry and Biochemistry, Baylor University, Waco, Texas, USA
| |
Collapse
|
2
|
Murtada R, Finn S, Gao J. Development of mass spectrometric glycan characterization tags using acid-base chemistry and/or free radical chemistry. MASS SPECTROMETRY REVIEWS 2024; 43:269-288. [PMID: 36161326 DOI: 10.1002/mas.21810] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/26/2022] [Accepted: 09/05/2022] [Indexed: 06/16/2023]
Abstract
Despite recent advances in glycomics, glycan characterization still remains an analytical challenge. Accordingly, numerous glycan-tagging reagents with different chemistries were developed, including those involving acid-base chemistry and/or free radical chemistry. Acid-base chemistry excels at dissociating glycans into their constituent components in a systematic and predictable manner to generate cleavages at glycosidic bonds. Glycans are also highly susceptible to depolymerization by free radical processes, which is supported by results observed from electron-activated dissociation techniques. Therefore, the free radical activated glycan sequencing (FRAGS) reagent was developed so as to possess the characteristics of both acid-base and free radical chemistry, thus generating information-rich glycosidic bond and cross-ring cleavages. Alternatively, the free radical processes can be induced via photodissociation of the specific carbon-iodine bond which gives birth to similar fragmentation patterns as the FRAGS reagent. Furthermore, the methylated-FRAGS (Me-FRAGS) reagent was developed to eliminate glycan rearrangements by way of a fixed charged as opposed to a labile proton, which would otherwise yield additional, yet unpredictable, fragmentations including internal residue losses or multiple external residue losses. Lastly, to further enhance glycan enrichment and characterization, solid-support FRAGS was developed.
Collapse
Affiliation(s)
- Rayan Murtada
- Department of Chemistry and Biochemistry, Montclair State University, Montclair, New Jersey, USA
| | - Shane Finn
- Department of Chemistry and Biochemistry, Montclair State University, Montclair, New Jersey, USA
| | - Jinshan Gao
- Department of Chemistry and Biochemistry, Montclair State University, Montclair, New Jersey, USA
| |
Collapse
|
3
|
Li R, Xia C, Wu S, Downs MJ, Tong H, Tursumamat N, Zaia J, Costello CE, Lin C, Wei J. Direct and Detailed Site-Specific Glycopeptide Characterization by Higher-Energy Electron-Activated Dissociation Tandem Mass Spectrometry. Anal Chem 2024; 96:1251-1258. [PMID: 38206681 PMCID: PMC10885852 DOI: 10.1021/acs.analchem.3c04484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Glycosylation is widely recognized as the most complex post-translational modification due to the widespread presence of macro- and microheterogeneities, wherein its biological consequence is closely related to both the glycosylation sites and the glycan fine structures. Yet, efficient site-specific detailed glycan characterization remains a significant analytical challenge. Here, utilizing an Orbitrap-Omnitrap platform, higher-energy electron-activated dissociation (heExD) tandem mass spectrometry (MS/MS) revealed extraordinary efficacy for the structural characterization of intact glycopeptides. HeExD produced extensive fragmentation within both the glycan and the peptide, including A-/B-/C-/Y-/Z-/X-ions from the glycan motif and a-/b-/c-/x-/y-/z-type peptide fragments (with or without the glycan). The intensity of cross-ring cleavage and backbone fragments retaining the intact glycan was highly dependent on the electron energy. Among the four electron energy levels investigated, electronic excitation dissociation (EED) provided the most comprehensive structural information, yielding a complete series of glycosidic fragments for accurate glycan topology determination, a wealth of cross-ring fragments for linkage definition, and the most extensive peptide backbone fragments for accurate peptide sequencing and glycosylation site localization. The glycan fragments observed in the EED spectrum correlated well with the fragmentation patterns observed in EED MS/MS of the released glycans. The advantages of EED over higher-energy collisional dissociation (HCD), stepped collision energy HCD (sceHCD), and electron-transfer/higher-energy collisional dissociation (EThcD) were demonstrated for the characterization of a glycopeptide bearing a biantennary disialylated glycan. EED can produce a complete peptide backbone and glycan sequence coverage even for doubly protonated precursors. The exceptional performance of heExD MS/MS, particularly EED MS/MS, in site-specific detailed glycan characterization on an Orbitrap-Omnitrap hybrid instrument presents a novel option for in-depth glycosylation analysis.
Collapse
Affiliation(s)
- Ruiqing Li
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmaceutical Sciences, National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Chaoshuang Xia
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine, 670 Albany Street, Boston, Massachusetts 02118, United States
| | - Shuye Wu
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmaceutical Sciences, National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Margaret J Downs
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine, 670 Albany Street, Boston, Massachusetts 02118, United States
| | - Haowei Tong
- School of Life Science, Shanghai Jiao Tong University, Shanghai, 800 Dongchuan Road, Shanghai 200240, China
| | - Nafisa Tursumamat
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmaceutical Sciences, National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine, 670 Albany Street, Boston, Massachusetts 02118, United States
| | - Catherine E Costello
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine, 670 Albany Street, Boston, Massachusetts 02118, United States
| | - Cheng Lin
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine, 670 Albany Street, Boston, Massachusetts 02118, United States
| | - Juan Wei
- Engineering Research Center of Cell & Therapeutic Antibody, Ministry of Education, School of Pharmaceutical Sciences, National Key Laboratory of Innovative Immunotherapy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| |
Collapse
|
4
|
Campuzano IDG. A Research Journey: Over a Decade of Denaturing and Native-MS Analyses of Hydrophobic and Membrane Proteins in Amgen Therapeutic Discovery. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2023; 34:2413-2431. [PMID: 37643331 DOI: 10.1021/jasms.3c00175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Membrane proteins and associated complexes currently comprise the majority of therapeutic targets and remain among the most challenging classes of proteins for analytical characterization. Through long-term strategic collaborations forged between industrial and academic research groups, there has been tremendous progress in advancing membrane protein mass spectrometry (MS) analytical methods and their concomitant application to Amgen therapeutic project progression. Herein, I will describe a detailed and personal account of how electrospray ionization (ESI) native mass spectrometry (nMS), ion mobility-MS (IM-MS), reversed phase liquid chromatographic mass spectrometry (RPLC-MS), high-throughput solid phase extraction mass spectrometry, and matrix-assisted laser desorption ionization mass spectrometry methods were developed, optimized, and validated within Amgen Research, and importantly, how these analytical methods were applied for membrane and hydrophobic protein analyses and ultimately therapeutic project support and progression. Additionally, I will discuss all the highly important and productive collaborative efforts, both internal Amgen and external academic, which were key in generating the samples, methods, and associated data described herein. I will also describe some early and previously unpublished nano-ESI (nESI) native-MS data from Amgen Research and the highly productive University of California Los Angeles (UCLA) collaboration. I will also present previously unpublished examples of real-life Amgen biotherapeutic membrane protein projects that were supported by all the MS (and IM) analytical techniques described herein. I will start by describing the initial nESI nMS experiments performed at Amgen in 2011 on empty nanodisc molecules, using a quadrupole time-of-flight MS, and how these experiments progressed on to the 15 Tesla Fourier transform ion cyclotron resonance MS at UCLA. Then described are monomeric and multimeric membrane protein data acquired in both nESI nMS and tandem-MS modes, using multiple methods of ion activation, resulting in dramatic spectral simplification. Also described is how we investigated the far less established and less published subject, that is denaturing RPLC-MS analysis of membrane proteins, and how we developed a highly robust and reproducible RPLC-MS method capable of effective separation of membrane proteins differing in only the presence or absence of an N-terminal post translational modification. Also described is the evolution of the aforementioned RPLC-MS method into a high-throughput solid phase extraction MS method. Finally, I will give my opinion on key developments and how the area of nMS of membrane proteins needs to evolve to a state where it can be applied within the biopharmaceutical research environment for routine therapeutic project support.
Collapse
Affiliation(s)
- Iain D G Campuzano
- Amgen Research, Center for Research Acceleration by Digital Innovation, Molecular Analytics, Thousand Oaks, California 91320, United States
| |
Collapse
|
5
|
Wei J, Papanastasiou D, Kosmopoulou M, Smyrnakis A, Hong P, Tursumamat N, Klein JA, Xia C, Tang Y, Zaia J, Costello CE, Lin C. De novo glycan sequencing by electronic excitation dissociation MS 2-guided MS 3 analysis on an Omnitrap-Orbitrap hybrid instrument. Chem Sci 2023; 14:6695-6704. [PMID: 37350811 PMCID: PMC10284134 DOI: 10.1039/d3sc00870c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/24/2023] [Indexed: 06/24/2023] Open
Abstract
Comprehensive de novo glycan sequencing remains an elusive goal due to the structural diversity and complexity of glycans. Present strategies employing collision-induced dissociation (CID) and higher energy collisional dissociation (HCD)-based multi-stage tandem mass spectrometry (MSn) or MS/MS combined with sequential exoglycosidase digestions are inherently low-throughput and difficult to automate. Compared to CID and HCD, electron transfer dissociation (ETD) and electron capture dissociation (ECD) each generate more cross-ring cleavages informative about linkage positions, but electronic excitation dissociation (EED) exceeds the information content of all other methods and is also applicable to analysis of singly charged precursors. Although EED can provide extensive glycan structural information in a single stage of MS/MS, its performance has largely been limited to FTICR MS, and thus it has not been widely adopted by the glycoscience research community. Here, the effective performance of EED MS/MS was demonstrated on a hybrid Orbitrap-Omnitrap QE-HF instrument, with high sensitivity, fragmentation efficiency, and analysis speed. In addition, a novel EED MS2-guided MS3 approach was developed for detailed glycan structural analysis. Automated topology reconstruction from MS2 and MS3 spectra could be achieved with a modified GlycoDeNovo software. We showed that the topology and linkage configurations of the Man9GlcNAc2 glycan can be accurately determined from first principles based on one EED MS2 and two CID-EED MS3 analyses, without reliance on biological knowledge, a structure database or a spectral library. The presented approach holds great promise for autonomous, comprehensive and de novo glycan sequencing.
Collapse
Affiliation(s)
- Juan Wei
- Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine Boston MA 02118 USA
| | | | | | | | - Pengyu Hong
- Department of Computer Science, Brandeis University Waltham MA 02454 USA
| | - Nafisa Tursumamat
- Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Joshua A Klein
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine Boston MA 02118 USA
| | - Chaoshuang Xia
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine Boston MA 02118 USA
| | - Yang Tang
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine Boston MA 02118 USA
- Department of Chemistry, Boston University Boston MA 02215 USA
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine Boston MA 02118 USA
| | - Catherine E Costello
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine Boston MA 02118 USA
- Department of Chemistry, Boston University Boston MA 02215 USA
| | - Cheng Lin
- Center for Biomedical Mass Spectrometry, Boston University Chobanian & Avedisian School of Medicine Boston MA 02118 USA
| |
Collapse
|
6
|
Fabijanczuk K, Yu ZJ, Bakestani RM, Murtada R, Denton N, Gaspar K, Otegui T, Acosta J, Kenttämaa HI, Eshuis H, Gao J. Mechanistic Study into Free Radical-Activated Glycan Dissociations through Isotope-Labeled Cellobioses. Anal Chem 2023; 95:2932-2941. [PMID: 36715667 PMCID: PMC10129047 DOI: 10.1021/acs.analchem.2c04649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Inspired by the electron-activated dissociation technique, the most potent tool for glycan characterization, we recently developed free radical reagents for glycan structural elucidation. However, the underlying mechanisms of free radical-induced glycan dissociation remain unclear and, therefore, hinder the rational optimization of the free radical reagents and the interpretation of tandem mass spectra, especially the accurate assignment of the relatively low-abundant but information-rich ions. In this work, we selectively incorporate the 13C and/or 18O isotopes into cellobiose to study the mechanisms for free radical-induced dissociation of glycans. The eight isotope-labeled cellobioses include 1-13C, 3-13C, 1'-13C, 2'-13C, 3'-13C, 4'-13C, 5'-13C, and 1'-13C-4-18O-cellobioses. Upon one-step collisional activation, cross-ring (X ions), glycosidic bond (Y-, Z-, and B-related ions), and combinational (Y1 + 0,4X0 ion) cleavages are generated. These fragment ions can be unambiguously assigned and confirmed by the mass difference of isotope labeling. Importantly, the relatively low-abundant but information-rich ions, such as 1,5X0 + H, 1,4X0 + H, 2,4X0 + H-OH, Y1 + 0,4X0, 2,5X1-H, 3,5X0-H, 0,3X0-H, 1,4X0-H, and B2-3H, are confidently assigned. The mechanisms for the formations of these ions are investigated and supported by quantum chemical calculations. These ions are generally initiated by hydrogen abstraction followed by sequential β-elimination and/or radical migration. Here, the mechanistic study for free radical-induced glycan dissociation allows us to interpret all of the free radical-induced fragment ions accurately and, therefore, enables the differentiation of stereochemical isomers. Moreover, it provides fundamental knowledge for the subsequent development of bioinformatics tools to interpret the complex free radical-induced glycan spectra.
Collapse
Affiliation(s)
- Kimberly Fabijanczuk
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Zaikuan Josh Yu
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Rose M Bakestani
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Rayan Murtada
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Nicholas Denton
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Kaylee Gaspar
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Tara Otegui
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Jose Acosta
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Hilkka I Kenttämaa
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Henk Eshuis
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Jinshan Gao
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| |
Collapse
|
7
|
The effect of alkali metals, carbocations, and metallocenes substitutes on two ν-carrabiose disaccharide derivatives: a density functional study. Struct Chem 2022. [DOI: 10.1007/s11224-022-02114-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
8
|
Wong HTK, Chen X, Wu R, Wong YLE, Hung YLW, Chan TWD. Dissociation of Mannose-Rich Glycans Using Collision-Based and Electron-Based Ion Activation Methods. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:803-812. [PMID: 35380839 DOI: 10.1021/jasms.1c00385] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Three dissociation methods, including collision-induced dissociation (CID), electron capture dissociation (ECD), and electronic excitation dissociation (EED), were evaluated for the dissociation of doubly charged glycans using sodium or magnesium ions as charge carriers. CID produced mainly glycosidic cleavages, although more cross-ring fragment ions could be obtained at higher intensities when magnesium ions were used as charge carriers [M + Mg]2+. The 0,2A3, 0,3A3, and 0,4A3 ions provided structural information on the 3 → 1 and 6 → 1 linkages of the mannoses. Some internal fragment ions, such as 2,4A5_Y3β, were also produced in high abundance, thus providing additional information on the glycan structure. ECD produced limited fragments compared to other dissociation methods when either of the metal ions were used as charge carriers. Cross-ring fragments were obtained in relatively high abundance, with the charge mainly retained on the nonreducing end. EED produced extensive glycosidic and cross-ring cleavages when either metal charge carrier was used. A higher fragmentation efficiency was achieved and more structural-specific fragments were produced when Na+ was used as the charge carrier. Of the 31 possible cross-ring cleavages, including 0,2-, 0,4-, 1,5-, 2,4-, and 3,5-cleavages, 25 were found, thus providing extensive linkage information. A wide range of fragment ions could be obtained in all dissociation methods when Mg2+ was used as the charge carrier. Two specific analytical approaches were found to produce extensively structural-specific information on the glycans studied, namely CID of magnesiated glycans and EED of sodiated glycans. These two methods were selected to further analyze the larger mannose-rich glycans Man6GlcNAc2 and Man8GlcNAc2 and generated extensive structural information.
Collapse
Affiliation(s)
- H-T Kitty Wong
- Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, P. R. China
| | - Xiangfeng Chen
- Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, P. R. China
- Shandong Analysis and Test Centre, School of Pharmaceutical Science, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250014, P. R. China
| | - Ri Wu
- Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, P. R. China
| | - Y-L Elaine Wong
- Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, P. R. China
| | - Y-L Winnie Hung
- Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, P. R. China
| | - T-W Dominic Chan
- Department of Chemistry, The Chinese University of Hong Kong, Hong Kong, P. R. China
| |
Collapse
|
9
|
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.
Collapse
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
| |
Collapse
|
10
|
Sasiene ZJ, Ropartz D, Rogniaux H, Jackson GP. Charge transfer dissociation of a branched glycan with alkali and alkaline earth metal adducts. JOURNAL OF MASS SPECTROMETRY : JMS 2021; 56:e4774. [PMID: 34180110 PMCID: PMC8285033 DOI: 10.1002/jms.4774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/28/2021] [Accepted: 06/03/2021] [Indexed: 05/05/2023]
Abstract
Alkali and alkaline earth metal adducts of a branched glycan, XXXG, were analyzed with helium charge transfer dissociation (He-CTD) and low-energy collision-induced dissociation (LE-CID) to investigate if metalation would impact the type of fragments generated and the structural characterization of the analyte. The studied adducts included 1+ and 2+ precursors involving one or more of the cations: H+ , Na+ , K+ , Ca2+ , and Mg2+ . Regardless of the metal adduct, He-CTD generated abundant and numerous glycosidic and cross-ring cleavages that were structurally informative and able to identify the 1,4-linkage and 1,6-branching patterns. In contrast, the LE-CID spectra mainly contained glycosidic cleavages, consecutive fragments, and numerous neutral losses, which complicated spectral interpretation. LE-CID of [M + K + H]2+ and [M + Na]+ precursors generated a few cross-ring cleavages, but they were not sufficient to identify the 1,4-linkage and 1,6-branching pattern of the XXXG xyloglucan. He-CTD predominantly generated 1+ fragments from 1+ precursors and 2+ product ions from 2+ precursors, although both LE-CID and He-CTD were able to generate 1+ product ions from 2+ adducts of magnesium and calcium. The singly charged fragments derive from the loss of H+ from the metalated product ions and the formation of a protonated complementary product ion; such observations are similar to previous reports for magnesium and calcium salts undergoing electron capture dissociation (ECD) activation. However, during He-CTD, the [M + Mg]2+ precursor generated more singly charged product ions than [M + Ca]2+ , either because Mg has a higher second ionization potential than Ca or because of conformational differences and the locations of the charging adducts during fragmentation. He-CTD of the [M + 2Na]2+ and the [M + 2 K]2+ precursors generated singly charged product ions from the loss of a sodium ion and potassium ion, respectively. In summary, although the metal ions influence the mass and charge state of the observed product ions, the metal ions had a negligible effect on the types of cross-ring cleavages observed.
Collapse
Affiliation(s)
- Zachary J Sasiene
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia, 26506-6121, USA
| | - David Ropartz
- UR BIA, INRAE, Nantes, F-44316, France
- BIBS Facility, INRAE, Nantes, F-44316, France
| | - Hélène Rogniaux
- UR BIA, INRAE, Nantes, F-44316, France
- BIBS Facility, INRAE, Nantes, F-44316, France
| | - Glen P Jackson
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia, 26506-6121, USA
- Department of Forensic and Investigative Science, West Virginia University, Morgantown, West Virginia, 26506-6121, USA
| |
Collapse
|
11
|
Ollivier S, Tarquis L, Fanuel M, Li A, Durand J, Laville E, Potocki-Veronese G, Ropartz D, Rogniaux H. Anomeric Retention of Carbohydrates in Multistage Cyclic Ion Mobility (IMS n): De Novo Structural Elucidation of Enzymatically Produced Mannosides. Anal Chem 2021; 93:6254-6261. [PMID: 33829764 DOI: 10.1021/acs.analchem.1c00673] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Carbohydrates are complex structures that still challenge analysts today because of their different levels of isomerism, notably the anomerism of the glycosidic bond. It has been shown recently that anomerism is preserved upon gas-phase fragmentation and that high-resolution ion mobility (IMS) can distinguish anomers. However, these concepts have yet to be applied to complex biological products. We have used high-resolution IMS on a cyclic device to characterize the reaction products of Uhgb_MS, a novel mannoside synthase of the GH130 family. We designed a so-called IMSn sequence consisting of (i) separating and isolating specific IMS peaks, (ii) ejecting ions to a pre-array store cell depending on their arrival time, (iii) inducing collisional activation upon reinjection, and (iv) performing multistage IMS analysis of the fragments. First, we applied IMS2 sequences to purely linked α1,2- and β1,2-mannooligosaccharides, which provided us with reference drift times for fragments of known conformation. Then, we performed IMSn analyses of enzymatically produced mannosides and, by comparison with the references, we succeeded in determining the intrachain anomerism of a α1,2-mannotriose and a mix-linked β/α1,2-mannotetraose-a first for a crude biological medium. Our results show that the anomerism of glycosides is maintained through multiple stages of collisional fragmentation, and that standalone high-resolution IMS and IMSn can be used to characterize the intrachain anomerism in tri- and tetrasaccharides in a biological medium. This is also the first evidence that a single carbohydrate-active enzyme can synthesize both α- and β-glycosidic linkages.
Collapse
Affiliation(s)
- Simon Ollivier
- INRAE, UR BIA, F-44316 Nantes, France.,INRAE, BIBS Facility, F-44316 Nantes, France
| | - Laurence Tarquis
- TBI, CNRS, INRA, INSAT, Université de Toulouse, F-31077 Toulouse, France
| | - Mathieu Fanuel
- INRAE, UR BIA, F-44316 Nantes, France.,INRAE, BIBS Facility, F-44316 Nantes, France
| | - Ao Li
- TBI, CNRS, INRA, INSAT, Université de Toulouse, F-31077 Toulouse, France
| | - Julien Durand
- TBI, CNRS, INRA, INSAT, Université de Toulouse, F-31077 Toulouse, France
| | - Elisabeth Laville
- TBI, CNRS, INRA, INSAT, Université de Toulouse, F-31077 Toulouse, France
| | | | - David Ropartz
- INRAE, UR BIA, F-44316 Nantes, France.,INRAE, BIBS Facility, F-44316 Nantes, France
| | - Hélène Rogniaux
- INRAE, UR BIA, F-44316 Nantes, France.,INRAE, BIBS Facility, F-44316 Nantes, France
| |
Collapse
|
12
|
Murtada R, Fabijanczuk K, Gaspar K, Dong X, Alzarieni KZ, Calix K, Manriquez E, Bakestani RM, Kenttämaa HI, Gao J. Free-Radical-Mediated Glycan Isomer Differentiation. Anal Chem 2020; 92:13794-13802. [PMID: 32935980 DOI: 10.1021/acs.analchem.0c02213] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The inherent structural complexity and diversity of glycans pose a major analytical challenge to their structural analysis. Radical chemistry has gained considerable momentum in the field of mass spectrometric biomolecule analysis, including proteomics, glycomics, and lipidomics. Herein, seven isomeric disaccharides and two isomeric tetrasaccharides with subtle structural differences are distinguished rapidly and accurately via one-step radical-induced dissociation. The free-radical-activated glycan-sequencing reagent (FRAGS) selectively conjugates to the unique reducing terminus of glycans in which a localized nascent free radical is generated upon collisional activation and simultaneously induces glycan fragmentation. Higher-energy collisional dissociation (HCD) and collision-induced dissociation (CID) are employed to provide complementary structural information for the identification and discrimination of glycan isomers by providing different fragmentation pathways to generate informative, structurally significant product ions. Furthermore, multiple-stage tandem mass spectrometry (MS3 CID) provides supplementary and valuable structural information through the generation of characteristic parent-structure-dependent fragment ions.
Collapse
Affiliation(s)
- Rayan Murtada
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Kimberly Fabijanczuk
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Kaylee Gaspar
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Xueming Dong
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Kawthar Zeyad Alzarieni
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Kimberly Calix
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Edgar Manriquez
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Rose Mery Bakestani
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| | - Hilkka I Kenttämaa
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Jinshan Gao
- Department of Chemistry and Biochemistry, Montclair State University, 1 Normal Avenue, Montclair, New Jersey 07043, United States
| |
Collapse
|
13
|
Wei J, Tang Y, Ridgeway ME, Park MA, Costello CE, Lin C. Accurate Identification of Isomeric Glycans by Trapped Ion Mobility Spectrometry-Electronic Excitation Dissociation Tandem Mass Spectrometry. Anal Chem 2020; 92:13211-13220. [PMID: 32865981 DOI: 10.1021/acs.analchem.0c02374] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Ion mobility-mass spectrometry (IM-MS) has become a powerful tool for glycan structural characterization due to its ability to separate isomers and provide collision cross section (CCS) values that facilitate structural assignment. However, IM-based isomer analysis may be complicated by the presence of multiple gas-phase conformations of a single structure that not only increases difficulty in isomer separation but can also introduce the possibility for misinterpretation of conformers as isomers. Here, the ion mobility behavior of several sets of isomeric glycans, analyzed as their permethylated derivatives, in both nonreduced and reduced forms, was investigated by gated-trapped ion mobility spectrometry (G-TIMS). Notably, reducing-end reduction, commonly performed to remove anomerism-induced chromatographic peak splitting, did not eliminate the conformational heterogeneity of permethylated glycans in the gas phase. At a mobility resolving power of ∼100, 14 out of 22 structures showed more than one conformation. These results highlight the need to use IMS devices with high mobility resolving power for better separation of isomers and to acquire additional structural information that can differentiate isomers from conformers. Online electronic excitation dissociation (EED) MS/MS analysis of isomeric glycan mixtures following G-TIMS separation showed that EED can generate isomer-specific fragments while producing nearly identical tandem mass spectra for conformers, thus allowing confident identification of isomers with minimal evidence of any ambiguity resulting from the presence of conformers. G-TIMS EED MS/MS analysis of N-linked glycans released from ovalbumin revealed that several mobility features previously thought to arise from isomeric structures were conformers of a single structure. Finally, analysis of ovalbumin N-glycans from different sources showed that the G-TIMS EED MS/MS approach can accurately determine the batch-to-batch variations in glycosylation profiles at the isomer level, with confident assignment of each isomeric structure.
Collapse
Affiliation(s)
- Juan Wei
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street, Room 508, Boston, Massachusetts 02118, United States
| | - Yang Tang
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street, Room 508, 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, 670 Albany Street, Room 508, Boston, Massachusetts 02118, United States.,Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Cheng Lin
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street, Room 508, Boston, Massachusetts 02118, United States
| |
Collapse
|
14
|
Buck-Wiese H, Fanuel M, Liebeke M, Le Mai Hoang K, Pardo-Vargas A, Seeberger PH, Hehemann JH, Rogniaux H, Jackson GP, Ropartz D. Discrimination of β-1,4- and β-1,3-Linkages in Native Oligosaccharides via Charge Transfer Dissociation Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:1249-1259. [PMID: 32309938 DOI: 10.1021/jasms.0c00087] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The connection between monosaccharides influences the structure, solubility, and biological function of carbohydrates. Although tandem mass spectrometry (MS/MS) often enables the compositional identification of carbohydrates, traditional MS/MS fragmentation methods fail to generate abundant cross-ring fragments of intrachain monosaccharides that could reveal carbohydrate connectivity. We examined the potential of helium-charge transfer dissociation (He-CTD) as a method of MS/MS to decipher the connectivity of β-1,4- and β-1,3-linked oligosaccharides. In contrast to collision-induced dissociation (CID), He-CTD of isolated oligosaccharide precursors produced both glycosidic and cross-ring cleavages of each monosaccharide. The radical-driven dissociation in He-CTD induced single cleavage events, without consecutive fragmentations, which facilitated structural interpretation. He-CTD of various standards up to a degree of polymerization of 7 showed that β-1,4- and β-1,3-linked carbohydrates can be distinguished based on diagnostic 3,5A fragment ions that are characteristic for β-1,4-linkages. Overall, fragment ion spectra from He-CTD contained sufficient information to infer the connectivity specifically for each glycosidic bond. When testing He-CTD to resolve the order of β-1,4- and β-1,3-linkages in mixed-linked oligosaccharide standards, He-CTD spectra sometimes provided less confident assignment of connectivity. Ion mobility spectrometry-mass spectrometry (IMS-MS) of the standards indicated that ambiguity in the He-CTD spectra was caused by isobaric impurities in the mixed-linked oligosaccharides. Radical-driven dissociation induced by He-CTD can thus expand MS/MS to carbohydrate linkage analysis, as demonstrated by the comprehensive fragment ion spectra on native oligosaccharides. The determination of connectivity in true unknowns would benefit from the separation of isobaric precursors, through UPLC or IMS, before linkage determination via He-CTD.
Collapse
Affiliation(s)
- Hagen Buck-Wiese
- Max-Planck-Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany
- Marine Glycobiology, Marum Center for Marine Environmental Sciences, Leobener Strasse 8, 28359 Bremen, Germany
| | - Mathieu Fanuel
- INRAE, UR BIA, F-44316 Nantes, France
- INRAE, BIBS facility, F-44316 Nantes, France
| | - Manuel Liebeke
- Max-Planck-Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany
| | - Kim Le Mai Hoang
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Alonso Pardo-Vargas
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max-Planck-Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Institute for Chemistry and Biochemistry, Free University Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Jan-Hendrik Hehemann
- Max-Planck-Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany
- Marine Glycobiology, Marum Center for Marine Environmental Sciences, Leobener Strasse 8, 28359 Bremen, Germany
| | - Hélène Rogniaux
- INRAE, UR BIA, F-44316 Nantes, France
- INRAE, BIBS facility, F-44316 Nantes, France
| | - Glen P Jackson
- Department of Forensic and Investigative Science, West Virginia University, Morgantown, West Virginia 26506, United States
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - David Ropartz
- INRAE, UR BIA, F-44316 Nantes, France
- INRAE, BIBS facility, F-44316 Nantes, France
| |
Collapse
|
15
|
Xie C, Wu Q, Zhang S, Wang C, Gao W, Yu J, Tang K. Improving glycan isomeric separation via metal ion incorporation for drift tube ion mobility-mass spectrometry. Talanta 2020; 211:120719. [DOI: 10.1016/j.talanta.2020.120719] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/29/2019] [Accepted: 01/03/2020] [Indexed: 11/30/2022]
|
16
|
Wei J, Tang Y, Bai Y, Zaia J, Costello CE, Hong P, Lin C. Toward Automatic and Comprehensive Glycan Characterization by Online PGC-LC-EED MS/MS. Anal Chem 2020; 92:782-791. [PMID: 31829560 PMCID: PMC7082718 DOI: 10.1021/acs.analchem.9b03183] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Despite the recent advances in mass spectrometry (MS)-based methods for glycan structural analysis, characterization of glycomes remains a significant analytical challenge, in part due to the widespread presence of isomeric structures and the need to define the many structural variables for each glycan. Interpretation of the complex tandem mass spectra of glycans is often laborious and requires substantial expertise. Broad adoption of MS methods for glycomics, within and outside the glycoscience community, has been hindered by the shortage of bioinformatics tools for rapid and accurate glycan sequencing. Here, we developed an online porous graphitic carbon liquid chromatography (PGC-LC)-electronic excitation dissociation (EED) MS/MS method that takes advantage of the superior isomer resolving power of PGC and the structural details provided by EED MS/MS for characterization of glycan mixtures. We also made improvements to GlycoDeNovo, our de novo glycan sequencing algorithm, so that it can automatically and accurately identify glycan topologies from EED tandem mass spectra acquired online. The majority of linkages can also be determined de novo, although in some cases, biological insight may be needed to fully define the glycan structure. Application of this method to the analysis of N-glycans released from ribonuclease B not only revealed the presence of 18 high-mannose structures, including new isomers not previously reported, but also provided relative quantification for each isomeric structure. With fully automated data acquisition and topology analysis, the approach presented here holds great potential for automated and comprehensive glycan characterization.
Collapse
Affiliation(s)
- Juan Wei
- 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
| | - Yu Bai
- Beijing National Laboratory for Molecular Sciences, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, Massachusetts 02118, 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
| | - Pengyu Hong
- Department of Computer Science, Brandeis University, Waltham, Massachusetts 02454, United States
| | - Cheng Lin
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, Massachusetts 02118, United States
| |
Collapse
|
17
|
He H, Wen Y, Guo Z, Li P, Liu Z. Efficient Mass Spectrometric Dissection of Glycans via Gold Nanoparticle-Assisted in-Source Cation Adduction Dissociation. Anal Chem 2019; 91:8390-8397. [PMID: 31180200 DOI: 10.1021/acs.analchem.9b01217] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Structural identification of glycans is important but remains challenging, for which tandem mass spectrometry has evolved as an indispensable tool. However, it requires additional complex hardware and extra time for ion extraction. Herein, we report a straightforward approach called gold nanoparticles (AuNPs)-assisted in-source cation adduction dissociation (isCAD) for efficient mass spectrometry (MS) dissection of glycans. Although AuNPs have been employed as an inorganic matrix for MALDI MS, this is the first report of AuNP-induced fragmentation. In this approach, AuNPs were employed as an energy absorber for laser ionization as well as a trigger for fragmentation, while residual or deliberately added sodium ions acted as a cationizing agent. The addition of sodium ions induced intensive fragmentation, but the addition of protons suppressed the fragmentation, allowing for facile tuning of the degree of fragmentation. In addition, it was found that larger oligosaccharides and glycans were much easier to fragment as compared with their smaller counterparts, and the use of high-concentration AuNPs effectively suppressed the degree of fragmentation and thereby provided abundant molecular ions. Without any extra hardware and ion extraction, this approach provides a straightforward, cost-efficient and tunable fragmentation for efficient MS dissection of saccharides, including monosaccharides, oligosaccharides, and glycans. Thus, it opens new access to efficient MS dissection of glycans.
Collapse
Affiliation(s)
- Hui He
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Yanrong Wen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Zhanchen Guo
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Pengfei Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Zhen Liu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| |
Collapse
|
18
|
Gaspar K, Fabijanczuk K, Otegui T, Acosta J, Gao J. Development of Novel Free Radical Initiated Peptide Sequencing Reagent: Application to Identification and Characterization of Peptides by Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:548-556. [PMID: 30547308 PMCID: PMC6417990 DOI: 10.1007/s13361-018-2114-8] [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: 09/14/2018] [Revised: 11/12/2018] [Accepted: 11/23/2018] [Indexed: 05/19/2023]
Abstract
By incorporating a high proton affinity moiety to the charge localized free radical-initiated peptide sequencing (CL-FRIPS) reagent, FRIPS-MS technique has extended the applicability to hydrophobic peptides and peptides without basic amino acid residues (lysine, arginine, and histidine). Herein, the CL-FRIPS reagent has three moieties: (1) pyridine acting as the basic site to locate the proton, (2) 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO, a stable free radical) acting as the free radical precursor to generate the nascent free radical in the gas phase, and (3) N-hydroxysuccinimide (NHS) activated carboxylic acid acting as the coupling site to derivatize the N-terminus of peptides. The CL-FRIPS reagent allows for the characterization of peptides by generating sequencing ions, enzymatic cleavage-like radical-induced side chain losses, and the loss of TEMPO simultaneously via one-step collisional activation. Further collisional activation of enzymatic cleavage-like radical-induced side chain loss ions provides more information for the structure determination of peptides. The application of CL-FRIPS reagent to characterize peptides is proved by employing bovine insulin as the model peptide. Both scaffold structure of bovine insulin and sequencing information of each chain are achieved. Graphical Abstract.
Collapse
Affiliation(s)
- Kaylee Gaspar
- Department of Chemistry and Biochemistry, Center for Quantitative Obesity Research, Montclair State University, 1 Normal Avenue, Montclair, NJ, 07043, USA
| | - Kimberly Fabijanczuk
- Department of Chemistry and Biochemistry, Center for Quantitative Obesity Research, Montclair State University, 1 Normal Avenue, Montclair, NJ, 07043, USA
| | - Tara Otegui
- Department of Chemistry and Biochemistry, Center for Quantitative Obesity Research, Montclair State University, 1 Normal Avenue, Montclair, NJ, 07043, USA
| | - Jose Acosta
- Department of Chemistry and Biochemistry, Center for Quantitative Obesity Research, Montclair State University, 1 Normal Avenue, Montclair, NJ, 07043, USA
| | - Jinshan Gao
- Department of Chemistry and Biochemistry, Center for Quantitative Obesity Research, Montclair State University, 1 Normal Avenue, Montclair, NJ, 07043, USA.
| |
Collapse
|
19
|
Chen X, Wang Z, Wong YLE, Wu R, Zhang F, Chan TWD. Electron-ion reaction-based dissociation: A powerful ion activation method for the elucidation of natural product structures. MASS SPECTROMETRY REVIEWS 2018; 37:793-810. [PMID: 29603345 DOI: 10.1002/mas.21563] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 02/12/2018] [Indexed: 05/16/2023]
Abstract
The structural elucidation of natural products (NPs) remains a challenge due to their structurally diversities and unpredictable functionalities, motifs, and scaffolds. Tandem mass spectrometry (MS/MS) is an effective method that assists the full elucidation of complicated NP structures. Ion activation methods play a key role in determining the fragmentation pathways and the structural information obtained from MS/MS. Electron-ion reaction-based dissociation (ExD) methods, including electron capture dissociation (ECD), electron transfer dissociation (ETD), electron-induced dissociation (EID), and electron detachment dissociation (EDD), can induce the breakage of specific chemical bonds and the generation of distinct fragment ions. This review article provides an overview of the mechanisms, instrumentation, and typical applications related to ExD MS/MS in the structural elucidation of NPs, primarly including lipids, oligosaccharides, glycoconjugates, metabolites, and pharmaceutical drugs. This work aims to reveal the capacity and potential of ExD mass spectrometry in analyzing NPs and consequently helping the NP communities to utilize the modern capabilities of MS/MS in the discovery and evaluation of novel NPs.
Collapse
Affiliation(s)
- Xiangfeng Chen
- Key Laboratory for Applied Technology of Sophisticated Analytical Instruments, Shandong Analysis and Test Centre, Qilu University of Technology (Shandong Academy of Science), Shandong, P.R. China
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, P.R. China
| | - Ze Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, P.R. China
| | - Y-L Elaine Wong
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, P.R. China
| | - Ri Wu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, P.R. China
| | - Feng Zhang
- Chinese Academy of Inspection and Quarantine, Beijing, P. R. China
| | - T-W Dominic Chan
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, P.R. China
| |
Collapse
|
20
|
Ashwood C, Lin CH, Thaysen-Andersen M, Packer NH. Discrimination of Isomers of Released N- and O-Glycans Using Diagnostic Product Ions in Negative Ion PGC-LC-ESI-MS/MS. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2018; 29:1194-1209. [PMID: 29603058 DOI: 10.1007/s13361-018-1932-z] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/30/2018] [Accepted: 02/01/2018] [Indexed: 06/08/2023]
Abstract
Profiling cellular protein glycosylation is challenging due to the presence of highly similar glycan structures that play diverse roles in cellular physiology. As the anomericity and the exact linkage type of a single glycosidic bond can influence glycan function, there is a demand for improved and automated methods to confirm detailed structural features and to discriminate between structurally similar isomers, overcoming a significant bottleneck in the analysis of data generated by glycomics experiments. We used porous graphitized carbon-LC-ESI-MS/MS to separate and detect released N- and O-glycan isomers from mammalian model glycoproteins using negative mode resonance activation CID-MS/MS. By interrogating similar fragment spectra from closely related glycan isomers that differ only in arm position and sialyl linkage, product fragment ions for discrimination between these features were discovered. Using the Skyline software, at least two diagnostic fragment ions of high specificity were validated for automated discrimination of sialylation and arm position in N-glycan structures, and sialylation in O-glycan structures, complementing existing structural diagnostic ions. These diagnostic ions were shown to be useful for isomer discrimination using both linear and 3D ion trap mass spectrometers when analyzing complex glycan mixtures from cell lysates. Skyline was found to serve as a useful tool for automated assessment of glycan isomer discrimination. This platform-independent workflow can potentially be extended to automate the characterization and quantitation of other challenging glycan isomers. Graphical Abstract ᅟ.
Collapse
Affiliation(s)
- Christopher Ashwood
- Department of Molecular Sciences, Macquarie University, Sydney, Australia
- Australian Research Council Centre of Excellence for Nanoscale Biophotonics, Macquarie University, Sydney, Australia
| | - Chi-Hung Lin
- Department of Molecular Sciences, Macquarie University, Sydney, Australia
- Australian Proteome Analysis Facility, Macquarie University, Sydney, Australia
- Institute for Glycomics, Griffith University, Southport, Australia
| | | | - Nicolle H Packer
- Department of Molecular Sciences, Macquarie University, Sydney, Australia.
- Australian Research Council Centre of Excellence for Nanoscale Biophotonics, Macquarie University, Sydney, Australia.
- Institute for Glycomics, Griffith University, Southport, Australia.
| |
Collapse
|
21
|
Tang Y, Wei J, Costello CE, Lin C. Characterization of Isomeric Glycans by Reversed Phase Liquid Chromatography-Electronic Excitation Dissociation Tandem Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2018; 29:1295-1307. [PMID: 29654534 PMCID: PMC6004250 DOI: 10.1007/s13361-018-1943-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/10/2018] [Accepted: 03/10/2018] [Indexed: 05/15/2023]
Abstract
The occurrence of numerous structural isomers in glycans from biological sources presents a severe challenge for structural glycomics. The subtle differences among isomeric structures demand analytical methods that can provide structural details while working efficiently with on-line glycan separation methods. Although liquid chromatography-tandem mass spectrometry (LC-MS/MS) is a powerful tool for mixture analysis, the commonly utilized collision-induced dissociation (CID) method often does not generate a sufficient number of fragments at the MS2 level for comprehensive structural characterization. Here, we studied the electronic excitation dissociation (EED) behaviors of metal-adducted, permethylated glycans, and identified key spectral features that could facilitate both topology and linkage determinations. We developed an EED-based, nanoscale, reversed phase (RP)LC-MS/MS platform, and demonstrated its ability to achieve complete structural elucidation of up to five structural isomers in a single LC-MS/MS analysis. Graphical Abstract.
Collapse
Affiliation(s)
- Yang Tang
- Department of Chemistry, Boston University, Boston, MA, 02215, USA
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Juan Wei
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Catherine E Costello
- Department of Chemistry, Boston University, Boston, MA, 02215, USA
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Cheng Lin
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, MA, 02118, USA.
| |
Collapse
|
22
|
Schaller-Duke RM, Bogala MR, Cassady CJ. Electron Transfer Dissociation and Collision-Induced Dissociation of Underivatized Metallated Oligosaccharides. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2018; 29:1021-1035. [PMID: 29492773 PMCID: PMC5943087 DOI: 10.1007/s13361-018-1906-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 01/25/2018] [Accepted: 01/25/2018] [Indexed: 05/04/2023]
Abstract
Electron transfer dissociation (ETD) and collision-induced dissociation (CID) were used to investigate underivatized, metal-cationized oligosaccharides formed via electrospray ionization (ESI). Reducing and non-reducing sugars were studied including the tetrasaccharides maltotetraose, 3α,4β,3α-galactotetraose, stachyose, nystose, and a heptasaccharide, maltoheptaose. Univalent alkali, divalent alkaline earth, divalent and trivalent transition metal ions, and a boron group trivalent metal ion were adducted to the non-permethylated oligosaccharides. ESI generated [M + Met]+, [M + 2Met]2+, [M + Met]2+, [M + Met - H]+, and [M + Met - 2H]+ most intensely along with low intensity nitrate adducts, depending on the metal and sugar ionized. The ability of these metal ions to produce oligosaccharide adduct ions by ESI had the general trend: Ca(II) > Mg(II) > Ni(II) > Co(II) > Zn(II) > Cu(II) > Na(I) > K(I) > Al(III) ≈ Fe(III) ≈ Cr(III). Although trivalent metals were utilized, no triply charged ions were formed. Metal cations allowed for high ESI signal intensity without permethylation. ETD and CID on [M + Met]2+ produced various glycosidic and cross-ring cleavages, with ETD producing more cross-ring and internal ions, which are useful for structural analysis. Product ion intensities varied based on glycosidic-bond linkage and identity of monosaccharide sub-unit, and metal adducts. ETD and CID showed high fragmentation efficiency, often with complete precursor dissociation, depending on the identity of the adducted metal ion. Loss of water was occasionally observed, but elimination of small neutral molecules was not prevalent. For both ETD and CID, [M + Co]2+ produced the most uniform structurally informative dissociation with all oligosaccharides studied. The ETD and CID spectra were complementary. Graphical Abstract ᅟ.
Collapse
Affiliation(s)
- Ranelle M Schaller-Duke
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, 35487, USA
| | - Mallikharjuna R Bogala
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, 35487, USA
| | - Carolyn J Cassady
- Department of Chemistry and Biochemistry, The University of Alabama, Tuscaloosa, AL, 35487, USA.
| |
Collapse
|
23
|
Frost DC, Li L. Recent advances in mass spectrometry-based glycoproteomics. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2018; 95:71-123. [PMID: 24985770 DOI: 10.1016/b978-0-12-800453-1.00003-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Protein glycosylation plays fundamental roles in many biological processes as one of the most common, and the most complex, posttranslational modification. Alterations in glycosylation profile are now known to be associated with many diseases. As a result, the discovery and detailed characterization of glycoprotein disease biomarkers is a primary interest of biomedical research. Advances in mass spectrometry (MS)-based glycoproteomics and glycomics are increasingly enabling qualitative and quantitative approaches for site-specific structural analysis of protein glycosylation. While the complexity presented by glycan heterogeneity and the wide dynamic range of clinically relevant samples like plasma, serum, cerebrospinal fluid, and tissue make comprehensive analyses of the glycoproteome a challenging task, the ongoing efforts into the development of glycoprotein enrichment, enzymatic digestion, and separation strategies combined with novel quantitative MS methodologies have greatly improved analytical sensitivity, specificity, and throughput. This review summarizes current MS-based glycoproteomics approaches and highlights recent advances in its application to cancer biomarker and neurodegenerative disease research.
Collapse
Affiliation(s)
- Dustin C Frost
- School of Pharmacy, University of Wisconsin, Madison, Wisconsin, USA
| | - Lingjun Li
- School of Pharmacy, University of Wisconsin, Madison, Wisconsin, USA; Department of Chemistry, University of Wisconsin, Madison, Wisconsin, USA.
| |
Collapse
|
24
|
Tang Y, Pu Y, Gao J, Hong P, Costello CE, Lin C. De Novo Glycan Sequencing by Electronic Excitation Dissociation and Fixed-Charge Derivatization. Anal Chem 2018; 90:3793-3801. [PMID: 29443510 DOI: 10.1021/acs.analchem.7b04077] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Detailed glycan structural characterization is frequently achieved by collisionally activated dissociation (CAD) based sequential tandem mass spectrometry (MS n) analysis of permethylated glycans. However, it is challenging to implement MS n ( n > 2) during online glycan separation, and this has limited its application to analysis of complex glycan mixtures from biological samples. Further, permethylation can reduce liquid chromatographic (LC) resolution of isomeric glycans. Here, we studied the electronic excitation dissociation (EED) fragmentation behavior of native glycans with a reducing-end fixed charge tag and identified key spectral features that are useful for topology and linkage determination. We also developed a de novo glycan sequencing software that showed remarkable accuracy in glycan topology elucidation based on the EED spectra of fixed charge-derivatized glycans. The ability to obtain glycan structural details at the MS2 level, without permethylation, via a combination of fixed charge derivatization, EED, and de novo spectral interpretation, makes the present approach a promising tool for comprehensive and rapid characterization of glycan mixtures.
Collapse
Affiliation(s)
- 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
| | - Yi Pu
- 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
| | - Jinshan Gao
- Department of Chemistry and Biochemistry , Montclair State University , Montclair , New Jersey 07043 , United States
| | - Pengyu Hong
- Department of Computer Science, Brandeis University , Waltham , Massachusetts 02453 , 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
| | - Cheng Lin
- Center for Biomedical Mass Spectrometry , Boston University School of Medicine , Boston , Massachusetts 02118 , United States
| |
Collapse
|
25
|
Challenges in Separations of Proteins and Small Biomolecules and the Role of Modern Mass Spectroscopy Tools for Solving Them, as Well as Bypassing Them, in Structural Analytical Studies of Complex Biomolecular Mixtures. SEPARATIONS 2018. [DOI: 10.3390/separations5010011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
26
|
Xiu Y, Ma L, Zhao H, Sun X, Li X, Liu S. Differentiation and identification of ginsenoside structural isomers by two-dimensional mass spectrometry combined with statistical analysis. J Ginseng Res 2017; 43:368-376. [PMID: 31308808 PMCID: PMC6606828 DOI: 10.1016/j.jgr.2017.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/19/2017] [Accepted: 11/13/2017] [Indexed: 12/28/2022] Open
Abstract
Background In the current phytochemical research on ginseng, the differentiation and structural identification of ginsenosides isomers remain challenging. In this paper, a two-dimensional mass spectrometry (2D-MS) method was developed and combined with statistical analysis for the direct differentiation, identification, and relative quantification of protopanaxadiol (PPD)-type ginsenoside isomers. Methods Collision-induced dissociation was performed at successive collision energy values to produce distinct profiles of the intensity fraction (IF) and ratio of intensity (RI) of the fragment ions. To amplify the differences in tandem mass spectra between isomers, IF and RI were plotted against collision energy. The resulting data distributions were then used to obtain the parameters of the fitted curves, which were used to evaluate the statistical significance of the differences between these distributions via the unpaired t test. Results A triplet and two pairs of PPD-type ginsenoside isomers were differentiated and identified by their distinct IF and RI distributions. In addition, the fragmentation preference of PPD-type ginsenosides was determined on the basis of the activation energy. The developed 2D-MS method was also extended to quantitatively determine the molar composition of ginsenoside isomers in mixtures of biotransformation products. Conclusion In comparison with conventional mass spectrometry methods, 2D-MS provides more direct insights into the subtle structural differences between isomers and can be used as an alternative approach for the differentiation of isomeric ginsenosides and natural products.
Collapse
Affiliation(s)
- Yang Xiu
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Li Ma
- Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, China
| | - Huanxi Zhao
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Xiuli Sun
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Xue Li
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Shuying Liu
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| |
Collapse
|
27
|
Hong P, Sun H, Sha L, Pu Y, Khatri K, Yu X, Tang Y, Lin C. GlycoDeNovo - an Efficient Algorithm for Accurate de novo Glycan Topology Reconstruction from Tandem Mass Spectra. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:2288-2301. [PMID: 28786094 PMCID: PMC5647224 DOI: 10.1007/s13361-017-1760-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/03/2017] [Accepted: 07/09/2017] [Indexed: 05/15/2023]
Abstract
A major challenge in glycomics is the characterization of complex glycan structures that are essential for understanding their diverse roles in many biological processes. We present a novel efficient computational approach, named GlycoDeNovo, for accurate elucidation of the glycan topologies from their tandem mass spectra. Given a spectrum, GlycoDeNovo first builds an interpretation-graph specifying how to interpret each peak using preceding interpreted peaks. It then reconstructs the topologies of peaks that contribute to interpreting the precursor ion. We theoretically prove that GlycoDeNovo is highly efficient. A major innovative feature added to GlycoDeNovo is a data-driven IonClassifier which can be used to effectively rank candidate topologies. IonClassifier is automatically learned from experimental spectra of known glycans to distinguish B- and C-type ions from all other ion types. Our results showed that GlycoDeNovo is robust and accurate for topology reconstruction of glycans from their tandem mass spectra. Graphical Abstract ᅟ.
Collapse
Affiliation(s)
- Pengyu Hong
- Department of Computer Science, Brandeis University, Waltham, MA, 02453, USA.
| | - Hui Sun
- Department of Computer Science, Brandeis University, Waltham, MA, 02453, USA
| | - Long Sha
- Department of Computer Science, Brandeis University, Waltham, MA, 02453, USA
| | - Yi Pu
- Department of Chemistry, Boston University, Boston, MA, 02215, USA
| | - Kshitij Khatri
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Xiang Yu
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Yang Tang
- Department of Chemistry, Boston University, Boston, MA, 02215, USA
| | - Cheng Lin
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, USA.
| |
Collapse
|
28
|
Bythell BJ, Abutokaikah MT, Wagoner AR, Guan S, Rabus JM. Cationized Carbohydrate Gas-Phase Fragmentation Chemistry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:688-703. [PMID: 27896699 DOI: 10.1007/s13361-016-1530-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 10/13/2016] [Accepted: 10/14/2016] [Indexed: 05/04/2023]
Abstract
We investigate the fragmentation chemistry of cationized carbohydrates using a combination of tandem mass spectrometry, regioselective labeling, and computational methods. Our model system is D-lactose. Barriers to the fundamental glyosidic bond cleavage reactions, neutral loss pathways, and structurally informative cross-ring cleavages are investigated. The most energetically favorable conformations of cationized D-lactose were found to be similar. In agreement with the literature, larger group I cations result in structures with increased cation coordination number which require greater collision energy to dissociate. In contrast with earlier proposals, the B n -Y m fragmentation pathways of both protonated and sodium-cationized analytes proceed via protonation of the glycosidic oxygen with concerted glycosidic bond cleavage. Additionally, for the sodiated congeners our calculations support sodiated 1,6-anhydrogalactose B n ion structures, unlike the preceding literature. This affects the subsequent propensity of formation and prediction of B n /Y m branching ratio. The nature of the anomeric center (α/β) affects the relative energies of these processes, but not the overall ranking. Low-energy cross-ring cleavages are observed for the metal-cationized analytes with a retro-aldol mechanism producing the 0,2 A 2 ion from the sodiated forms. Theory and experiment support the importance of consecutive fragmentation processes, particularly for the protonated congeners at higher collision energies. Graphical Abstract ᅟ.
Collapse
Affiliation(s)
- Benjamin J Bythell
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA.
| | - Maha T Abutokaikah
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA
| | - Ashley R Wagoner
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA
| | - Shanshan Guan
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA
| | - Jordan M Rabus
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA
| |
Collapse
|
29
|
Rabus JM, Abutokaikah MT, Ross RT, Bythell BJ. Sodium-cationized carbohydrate gas-phase fragmentation chemistry: influence of glycosidic linkage position. Phys Chem Chem Phys 2017; 19:25643-25652. [DOI: 10.1039/c7cp04738j] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Gas-phase structure and fragmentation chemistries of isomeric sodium-cationized sugars.
Collapse
Affiliation(s)
- Jordan M. Rabus
- Department of Chemistry and Biochemistry
- University of Missouri
- St. Louis
- USA
| | | | - Reginald T. Ross
- Department of Chemistry and Biochemistry
- University of Missouri
- St. Louis
- USA
| | | |
Collapse
|
30
|
Yu X, Zhong W. Differentiation of Norvaline and Valine in Peptides by Hot Electron Capture Dissociation. Anal Chem 2016; 88:5914-9. [DOI: 10.1021/acs.analchem.6b00823] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Xiang Yu
- Department of Pharmacokinetics, Pharmacodynamics, & Drug Metabolism (PPDM), Merck Research Laboratories, 770 Sumneytown Pike, West Point, Pennsylvania 19486, United States
| | - Wendy Zhong
- Process/Analytical
Chemistry, Merck Research Laboratories, 126 East Lincoln Avenue, Rahway, New Jersey 07065, United States
| |
Collapse
|
31
|
Desai N, Thomas DA, Lee J, Gao J, Beauchamp JL. Eradicating mass spectrometric glycan rearrangement by utilizing free radicals. Chem Sci 2016; 7:5390-5397. [PMID: 30155192 PMCID: PMC6020757 DOI: 10.1039/c6sc01371f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 05/04/2016] [Indexed: 12/17/2022] Open
Abstract
We designed and synthesized a methylated free radical activated glycan sequencing reagent (Me-FRAGS) for eliminating mass spectrometric glycan rearrangement.
Mass spectrometric glycan rearrangement is problematic because it provides misleading structural information. Here we report on a new reagent, a methylated free radical activated glycan sequencing reagent (Me-FRAGS), which combines a free radical precursor with a methylated pyridine moiety that can be coupled to the reducing terminus of glycans. The collisional activation of Me-FRAGS-derivatized glycans generates a nascent free radical that concurrently induces abundant glycosidic bond and cross-ring cleavage without the need for subsequent activation. The product ions resulting from glycan rearrangement, including internal residue loss and multiple external residue losses, are precluded. Glycan structures can be easily assembled and visualized using a radical driven glycan deconstruction diagram (R-DECON diagram). The presence and location of N-acetylated saccharide units and branch sites can be identified from the characteristic dissociation patterns observed only at these locations. The mechanisms of dissociation are investigated and discussed. This Me-FRAGS based mass spectrometric approach creates a new blueprint for glycan structure analysis.
Collapse
Affiliation(s)
- Nikunj Desai
- Department of Chemistry and Biochemistry , Center for Quantitative Obesity Research , Montclair State University , 1 Normal Avenue , Montclair , NJ 07043 , USA .
| | - Daniel A Thomas
- Arthur Amos Noyes Laboratory of Chemical Physics , California Institute of Technology , 1200 East California Blvd , Pasadena , CA 91125 , USA .
| | - Jungeun Lee
- Department of Chemistry and Biochemistry , Center for Quantitative Obesity Research , Montclair State University , 1 Normal Avenue , Montclair , NJ 07043 , USA .
| | - Jinshan Gao
- Department of Chemistry and Biochemistry , Center for Quantitative Obesity Research , Montclair State University , 1 Normal Avenue , Montclair , NJ 07043 , USA .
| | - J L Beauchamp
- Arthur Amos Noyes Laboratory of Chemical Physics , California Institute of Technology , 1200 East California Blvd , Pasadena , CA 91125 , USA .
| |
Collapse
|
32
|
Gaye MM, Nagy G, Clemmer DE, Pohl NLB. Multidimensional Analysis of 16 Glucose Isomers by Ion Mobility Spectrometry. Anal Chem 2016; 88:2335-44. [PMID: 26799269 DOI: 10.1021/acs.analchem.5b04280] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diastereomeric adducts comprising an enantiomerically pure monosaccharide analyte, a peptide, and/or an amino acid and a divalent metal ion (for 16 different monosaccharide isomers) are generated by electrospray ionization and analyzed by combined ion mobility spectrometry-mass spectrometry (IMS-MS) techniques. Mobility distributions of [l-Ser + M + H](+) (where l-Ser is l-serine and M is a given monosaccharide), [l-Phe-Gly + M + H](+) (where l-Phe-Gly is l-phenylalanine-glycine), and [Mn(II) + (l-Phe-Gly - H) + M](+) complex ions are used to determine collision cross sections (ccs in Å(2)), and groups of cross sections for different clusters are proposed as means of identifying the sugar isomers. Within one type of complex, variations in ccs do not always allow delineation between the 16 glucose isomers, but interestingly, when ccs of three different ions are combined as a spatial vector, enantiomers are partially resolved. As a result of this analysis, l-glucose, d-glucose, l-allose, d-allose, d-gulose, d-galactose, and l-mannose are delineated, and for all eight enantiomeric pairs, d and l entities display different coordinates. In addition, different combinations of amino acids, peptide, and metal ions are surveyed, and the potential for yielding unique coordinates for the generated diastereomeric complexes is assessed.
Collapse
Affiliation(s)
- M M Gaye
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - G Nagy
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - D E Clemmer
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| | - N L B Pohl
- Department of Chemistry, Indiana University , Bloomington, Indiana 47405, United States
| |
Collapse
|
33
|
Huang Y, Pu Y, Yu X, Costello CE, Lin C. Mechanistic Study on Electronic Excitation Dissociation of the Cellobiose-Na(+) Complex. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2016; 27:319-28. [PMID: 26432580 PMCID: PMC4724539 DOI: 10.1007/s13361-015-1277-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 09/02/2015] [Accepted: 09/05/2015] [Indexed: 05/04/2023]
Abstract
The recent development of electron activated dissociation (ExD) techniques has opened the door for high-throughput, detailed glycan structural elucidation. Among them, ExD methods employing higher-energy electrons offer several advantages over low-energy electron capture dissociation (ECD), owing to their applicability towards chromophore-labeled glycans and singly charged ions, and ability to provide more extensive structural information. However, a lack of understanding of these processes has hindered rational optimization of the experimental conditions for more efficient fragmentation as well as the development of informatics tools for interpretation of the complex glycan ExD spectra. Here, cellobiose-Na(+) was used as the model system to investigate the fragmentation behavior of metal-adducted glycans under irradiation of electrons with energy exceeding their ionization potential, and served as the basis on which a novel electronic excitation dissociation (EED) mechanism was proposed. It was found that ionization of the glycan produces a mixture of radical cations and ring-opened distonic ions. These distonic ions then capture a low-energy electron to produce diradicals with trivial singlet-triplet splitting, and subsequently undergo radical-induced dissociation to produce a variety of fragment ions, the abundances of which are influenced by the stability of the distonic ions from which they originate. Graphical Abstract ᅟ.
Collapse
Affiliation(s)
- Yiqun Huang
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA, 02118, USA
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Yi Pu
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA, 02118, USA
- Department of Chemistry, Boston University, Boston, MA, 02215, USA
| | - Xiang Yu
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA, 02118, USA
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Catherine E Costello
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA, 02118, USA
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, USA
- Department of Chemistry, Boston University, Boston, MA, 02215, USA
| | - Cheng Lin
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA, 02118, USA.
- Department of Biochemistry, Boston University School of Medicine, Boston, MA, 02118, USA.
| |
Collapse
|
34
|
Yuan H, Liu L, Gu J, Liu Y, Fang M, Zhao Y. Distinguishing isomeric aldohexose-ketohexose disaccharides by electrospray ionization mass spectrometry in positive mode. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:2167-2174. [PMID: 26467229 DOI: 10.1002/rcm.7294] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 07/16/2015] [Accepted: 07/24/2015] [Indexed: 06/05/2023]
Abstract
RATIONALE The identification of the structure of carbohydrates is challenging because of their complex composition of monosaccharide units, linkage position and anomeric configuration. We used a combination of principle component analysis (PCA) and tandem mass spectrometry (MS/MS), including collision-induced dissociation (CID) and higher energy collision dissociation (HCD), to distinguish four aldohexose-ketohexose isomers, sucrose, turanose, maltulose, and palatinose, which are composed of glucose and fructose. METHODS The electrospray ionization (ESI)-MS/MS spectra of the lithium and sodium adducts of the glucopyranosyl fructose (Glc-Fru) isomers were recorded on two independent mass spectrometers using CID (MicroTOF QII) and HCD (Q-Exactive Orbitrap). The differences between the fragment ions were evaluated by the PCA models. The glycosidic bond cleavage mechanism of lithiated sucrose was verified by a deuterium-labeling experiment combined with density functional theory calculations (Gaussian 09). RESULTS The main fragment ions in the MS/MS spectra from the glycosidic bond decomposition, cross-ring cleavage (-90 Da), and dehydration of the precursor ions of m/z 349 ([M+Li](+)) and m/z 365 ([M+Na](+)) were observed. Surprisingly, cross-ring cleavage and dehydration of the precursor ions were rarely observed in both lithiated and sodiated sucrose. There were significant differences in the fragmentation patterns and relative abundances of fragment ions in second-order mass spectrometry, which allowed discriminant models to be constructed for the alkali adducts and collision modes. CONCLUSIONS Glc-Fru isomers were discriminated in the PCA score plots for their lithium and sodium adducts by using different collision modes. The results showed that HCD-MS/MS is an ideal tool for differentiating lithium adducts, whereas, CID-MS/MS is better for discriminating sodium adducts. The hydrogen migration of the hydroxyl group at C3 of the fructose unit caused the glycosidic bond decomposition of lithiated sucrose.
Collapse
Affiliation(s)
- Hang Yuan
- Department of Chemistry, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, 361005, Fujian, China
| | - Liu Liu
- Department of Chemistry, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, 361005, Fujian, China
| | - Jinping Gu
- Department of Chemistry, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, 361005, Fujian, China
| | - Yan Liu
- Department of Chemistry, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, 361005, Fujian, China
| | - Meijuan Fang
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, Fujian, China
| | - Yufen Zhao
- Department of Chemistry, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Key Laboratory for Chemical Biology of Fujian Province, Xiamen University, Xiamen, 361005, Fujian, China
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, China
| |
Collapse
|
35
|
Gaye MM, Kurulugama R, Clemmer DE. Investigating carbohydrate isomers by IMS-CID-IMS-MS: precursor and fragment ion cross-sections. Analyst 2015; 140:6922-32. [DOI: 10.1039/c5an00840a] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fragmentation of melezitose by IMS-CID-IMS-MS.
Collapse
Affiliation(s)
- M. M. Gaye
- Department of Chemistry
- Indiana University
- Bloomington
- USA
| | - R. Kurulugama
- Department of Chemistry
- Indiana University
- Bloomington
- USA
| | - D. E. Clemmer
- Department of Chemistry
- Indiana University
- Bloomington
- USA
| |
Collapse
|
36
|
Wei J, Bristow AWT, O'Connor PB. The Competitive influence of Li+, Na+, K+, Ag+, and H+ on the fragmentation of a PEGylated polymeric excipient. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2015; 26:166-173. [PMID: 25326058 DOI: 10.1007/s13361-014-1009-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/11/2014] [Accepted: 09/11/2014] [Indexed: 06/04/2023]
Abstract
The collisionally activated dissociation (CAD) and electron capture dissociation (ECD) of doubly charged tocopheryl polyethylene glycol succinate (TPGS) have been examined. Li(+), Na(+), K(+), Ag(+), and H(+) were selected in the study, and the competitive influence of each ion was investigated by fragmenting TPGS attached with two different cations, [M + X1 + X2](2+) (X1 and X2 refer to Li(+), Na(+), K(+), Ag(+), H(+)). For metallic adducts, CAD results show that the dissociation of ionic adducts from the precursor is most likely depending on the binding strength, where the affinity of each ion to the TPGS is in the order of Ag(+) ≈ Li(+) ˃ Na(+) ˃ K(+). Introducing more strongly bound adducts increases fragmentation. During ECD, however, the silver cation is lost most easily compared with the other alkali metal ions, but silver also shows a dominant role in producing fragmentations. Moreover, the charge carriers are lost in an order (Ag(+) ˃ Na(+) ˃ K(+) ≥ Li(+) where the loss of Ag is most easily) that appears to correlate with the standard reduction potential of the metallic ions (Ag(+) ˃ Na(+) ˃ K(+) ˃ Li(+)). The ECD results suggest that the reduction potential of the charge carrier could be an important factor influencing the fragmentation, where the ion with a high reduction potential is more effective in capturing electrons, but may also be lost easily before leading to any fragmentation. Finally, a proton has the weakest binding with the TPGS according to the CAD results, and its dissociation in ECD follows the order of the reduction potential (Ag(+) ˃ H(+) ˃ Na(+) ˃ K(+) > Li(+)).
Collapse
Affiliation(s)
- Juan Wei
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | | | | |
Collapse
|
37
|
Zhu F, Glover MS, Shi H, Trinidad JC, Clemmer DE. Populations of metal-glycan structures influence MS fragmentation patterns. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2015; 26:25-35. [PMID: 25315458 PMCID: PMC4276451 DOI: 10.1007/s13361-014-1000-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 09/04/2014] [Accepted: 09/07/2014] [Indexed: 05/19/2023]
Abstract
The structures and collision-induced dissociation (CID) fragmentation patterns of the permethylated glycan Man5GlcNAc2 are investigated by a combination of hybrid ion mobility spectrometry (IMS), mass spectrometry (MS), and MS/MS techniques. IMS analysis of eight metal-adducted glycans ([Man5GlcNAc2 + M](2+), where M = Mn, Fe, Co, Ni, Cu, Mg, Ca, and Ba) shows distinct conformer patterns. These conformers appear to arise from individual metals binding at different sites on the glycan. Fragmentation studies suggest that these different binding sites influence the CID fragmentation patterns. This paper describes a series of separation, activation, and fragmentation studies that assess which fragments arise from each of the different gas-phase conformer states. Comparison of the glycan distributions formed under gentle ionization conditions with those obtained after activation of the gas-phase ions suggests that these conformer binding states also appear to exist in solution.
Collapse
Affiliation(s)
- Feifei Zhu
- Department of Chemistry, Indiana University, 800 Kirkwood Ave. Bloomington, IN 47405
| | - Matthew S. Glover
- Department of Chemistry, Indiana University, 800 Kirkwood Ave. Bloomington, IN 47405
| | - Huilin Shi
- Department of Chemistry, Indiana University, 800 Kirkwood Ave. Bloomington, IN 47405
| | - Jonathan C. Trinidad
- Department of Chemistry, Indiana University, 800 Kirkwood Ave. Bloomington, IN 47405
| | - David E. Clemmer
- Department of Chemistry, Indiana University, 800 Kirkwood Ave. Bloomington, IN 47405
| |
Collapse
|
38
|
Gao X, Zhang L, Zhang W, Zhao L. Design and application of an open tubular capillary reactor for solid-phase permethylation of glycans in glycoprotein. Analyst 2015; 140:1566-71. [DOI: 10.1039/c4an01045k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The permethylation derivatization method for structural analysis of glycans is important for characterizing glycoproteins in the study of glycomics.
Collapse
Affiliation(s)
- Xiaodi Gao
- Shanghai Key Laboratory of Functional Materials Chemistry
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Lingyi Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Weibing Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Liang Zhao
- State Key Laboratory of Proteomics
- Beijing Proteome Research Center
- Beijing Institute of Radiation Medicine
- Beijing 102206
- PR China
| |
Collapse
|
39
|
Liang Q, Macher T, Xu Y, Bao Y, Cassady CJ. MALDI MS In-Source Decay of Glycans Using a Glutathione-Capped Iron Oxide Nanoparticle Matrix. Anal Chem 2014; 86:8496-503. [DOI: 10.1021/ac502422a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Qiaoli Liang
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Thomas Macher
- Department
of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Yaolin Xu
- Department
of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Yuping Bao
- Department
of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Carolyn J. Cassady
- Department
of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| |
Collapse
|
40
|
Huang Y, Pu Y, Yu X, Costello CE, Lin C. Mechanistic study on electron capture dissociation of the oligosaccharide-Mg²⁺ complex. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:1451-60. [PMID: 24845360 PMCID: PMC4108535 DOI: 10.1007/s13361-014-0921-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 04/22/2014] [Accepted: 04/22/2014] [Indexed: 05/04/2023]
Abstract
Electron capture dissociation (ECD) has shown great potential in structural characterization of glycans. However, our current understanding of the glycan ECD process is inadequate for accurate interpretation of the complex glycan ECD spectra. Here, we present the first comprehensive theoretical investigation on the ECD fragmentation behavior of metal-adducted glycans, using the cellobiose-Mg²⁺ complex as the model system. Molecular dynamics simulation was carried out to determine the typical glycan-Mg²⁺ binding patterns and the lowest-energy conformer identified was used as the initial geometry for density functional theory-based theoretical modeling. It was found that the electron is preferentially captured by Mg²⁺ and the resultant Mg⁺• can abstract a hydroxyl group from the glycan moiety to form a carbon radical. Subsequent radical migration and α-cleavage(s) result in the formation of a variety of product ions. The proposed hydroxyl abstraction mechanism correlates well with the major features in the ECD spectrum of the Mg²⁺-adducted cellohexaose. The mechanism presented here also predicts the presence of secondary, radical-induced fragmentation pathways. These secondary fragment ions could be misinterpreted, leading to erroneous structural determination. The present study highlights an urgent need for continuing investigation of the glycan ECD mechanism, which is imperative for successful development of bioinformatics tools that can take advantage of the rich structural information provided by ECD of metal-adducted glycans.
Collapse
Affiliation(s)
- Yiqun Huang
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA 02118
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118
| | - Yi Pu
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA 02118
- Department of Chemistry, Boston University, Boston, MA 02215
| | - Xiang Yu
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA 02118
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118
| | - Catherine E. Costello
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA 02118
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118
- Department of Chemistry, Boston University, Boston, MA 02215
| | - Cheng Lin
- Mass Spectrometry Resource, Boston University School of Medicine, Boston, MA 02118
- Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118
| |
Collapse
|
41
|
Konda C, Londry FA, Bendiak B, Xia Y. Assignment of the stereochemistry and anomeric configuration of sugars within oligosaccharides via overlapping disaccharide ladders using MS(n). JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:1441-1450. [PMID: 24722900 DOI: 10.1007/s13361-014-0881-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/10/2014] [Accepted: 03/10/2014] [Indexed: 06/03/2023]
Abstract
A systematic approach is described that can pinpoint the stereo-structures (sugar identity, anomeric configuration, and location) of individual sugar units within linear oligosaccharides. Using a highly modified mass spectrometer, dissociation of linear oligosaccharides in the gas phase was optimized along multiple-stage tandem dissociation pathways (MS(n), n = 4 or 5). The instrument was a hybrid triple quadrupole/linear ion trap mass spectrometer capable of high-efficiency bidirectional ion transfer between quadrupole arrays. Different types of collision-induced dissociation (CID), either on-resonance ion trap or beam-type CID could be utilized at any given stage of dissociation, enabling either glycosidic bond cleavages or cross-ring cleavages to be maximized when wanted. The approach first involves optimizing the isolation of disaccharide units as an ordered set of overlapping substructures via glycosidic bond cleavages during early stages of MS(n), with explicit intent to minimize cross-ring cleavages. Subsequently, cross-ring cleavages were optimized for individual disaccharides to yield key diagnostic product ions (m/z 221). Finally, fingerprint patterns that establish stereochemistry and anomeric configuration were obtained from the diagnostic ions via CID. Model linear oligosaccharides were derivatized at the reducing end, allowing overlapping ladders of disaccharides to be isolated from MS(n). High confidence stereo-structural determination was achieved by matching MS(n) CID of the diagnostic ions to synthetic standards via a spectral matching algorithm. Using this MS(n) (n = 4 or 5) approach, the stereo-structures, anomeric configurations, and locations of three individual sugar units within two pentasaccharides were successfully determined.
Collapse
Affiliation(s)
- Chiharu Konda
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907, USA
| | | | | | | |
Collapse
|
42
|
Hu H, Huang Y, Mao Y, Yu X, Xu Y, Liu J, Zong C, Boons GJ, Lin C, Xia Y, Zaia J. A computational framework for heparan sulfate sequencing using high-resolution tandem mass spectra. Mol Cell Proteomics 2014; 13:2490-502. [PMID: 24925905 DOI: 10.1074/mcp.m114.039560] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Heparan sulfate (HS) is a linear polysaccharide expressed on cell surfaces, in extracellular matrices and cellular granules in metazoan cells. Through non-covalent binding to growth factors, morphogens, chemokines, and other protein families, HS is involved in all multicellular physiological activities. Its biological activities depend on the fine structures of its protein-binding domains, the determination of which remains a daunting task. Methods have advanced to the point that mass spectra with information-rich product ions may be produced on purified HS saccharides. However, the interpretation of these complex product ion patterns has emerged as the bottleneck to the dissemination of these HS sequencing methods. To solve this problem, we designed HS-SEQ, the first comprehensive algorithm for HS de novo sequencing using high-resolution tandem mass spectra. We tested HS-SEQ using negative electron transfer dissociation (NETD) tandem mass spectra generated from a set of pure synthetic saccharide standards with diverse sulfation patterns. The results showed that HS-SEQ rapidly and accurately determined the correct HS structures from large candidate pools.
Collapse
Affiliation(s)
- Han Hu
- From the ‡Bioinformatics Program, Boston University, Boston, Massachusetts 02215, USA; §Center for Biomedical Mass Spectrometry, Department of Biochemistry, Boston University School of Medicine, Boston University, Boston, Massachusetts 02118, USA
| | - Yu Huang
- §Center for Biomedical Mass Spectrometry, Department of Biochemistry, Boston University School of Medicine, Boston University, Boston, Massachusetts 02118, USA
| | - Yang Mao
- §Center for Biomedical Mass Spectrometry, Department of Biochemistry, Boston University School of Medicine, Boston University, Boston, Massachusetts 02118, USA
| | - Xiang Yu
- §Center for Biomedical Mass Spectrometry, Department of Biochemistry, Boston University School of Medicine, Boston University, Boston, Massachusetts 02118, USA
| | - Yongmei Xu
- ¶ Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - Jian Liu
- ¶ Division of Chemical Biology and Medicinal Chemistry, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, USA
| | - Chengli Zong
- **Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Geert-Jan Boons
- **Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
| | - Cheng Lin
- §Center for Biomedical Mass Spectrometry, Department of Biochemistry, Boston University School of Medicine, Boston University, Boston, Massachusetts 02118, USA
| | - Yu Xia
- ‖Department of Bioengineering, Faculty of Engineering, McGill University, Montreal, Quebec H3A 0C3, Canada; From the ‡Bioinformatics Program, Boston University, Boston, Massachusetts 02215, USA
| | - Joseph Zaia
- §Center for Biomedical Mass Spectrometry, Department of Biochemistry, Boston University School of Medicine, Boston University, Boston, Massachusetts 02118, USA;
| |
Collapse
|
43
|
Konda C, Bendiak B, Xia Y. Linkage determination of linear oligosaccharides by MS(n) (n > 2) collision-induced dissociation of Z₁ ions in the negative ion mode. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:248-257. [PMID: 24297470 DOI: 10.1007/s13361-013-0769-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 10/07/2013] [Accepted: 10/08/2013] [Indexed: 06/02/2023]
Abstract
Obtaining unambiguous linkage information between sugars in oligosaccharides is an important step in their detailed structural analysis. An approach is described that provides greater confidence in linkage determination for linear oligosaccharides based on multiple-stage tandem mass spectrometry (MS(n), n >2) and collision-induced dissociation (CID) of Z1 ions in the negative ion mode. Under low energy CID conditions, disaccharides (18)O-labeled on the reducing carbonyl group gave rise to Z1 product ions (m/z 163) derived from the reducing sugar, which could be mass-discriminated from other possible structural isomers having m/z 161. MS(3) CID of these m/z 163 ions showed distinct fragmentation fingerprints corresponding to the linkage types and largely unaffected by sugar unit identities or their anomeric configurations. This unique property allowed standard CID spectra of Z1 ions to be generated from a small set of disaccharide samples that were representative of many other possible isomeric structures. With the use of MS(n) CID (n = 3 - 5), model linear oligosaccharides were dissociated into overlapping disaccharide structures, which were subsequently fragmented to form their corresponding Z1 ions. CID data of these Z1 ions were collected and compared with the standard database of Z1 ion CID using spectra similarity scores for linkage determination. As the proof-of-principle tests demonstrated, we achieved correct determination of individual linkage types along with their locations within two trisaccharides and a pentasaccharide.
Collapse
Affiliation(s)
- Chiharu Konda
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907-2084, USA
| | | | | |
Collapse
|
44
|
Wei J, Bristow A, McBride E, Kilgour D, O’Connor PB. d-α-tocopheryl Polyethylene Glycol 1000 Succinate: A View from FTICR MS and Tandem MS. Anal Chem 2014; 86:1567-74. [DOI: 10.1021/ac403195f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Juan Wei
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | | | | | - David Kilgour
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Peter B. O’Connor
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| |
Collapse
|
45
|
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: 266] [Impact Index Per Article: 26.6] [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
| | | | | |
Collapse
|
46
|
Huang Y, Yu X, Mao Y, Costello CE, Zaia J, Lin C. De novo sequencing of heparan sulfate oligosaccharides by electron-activated dissociation. Anal Chem 2013; 85:11979-86. [PMID: 24224699 PMCID: PMC3912864 DOI: 10.1021/ac402931j] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Structural characterization of highly sulfated glycosaminoglycans (GAGs) by collisionally activated dissociation (CAD) is challenging because of the extensive sulfate losses mediated by free protons. While removal of the free protons may be achieved through the use of derivatization, metal cation adducts, and/or electrospray supercharging reagents, these steps add complexity to the experimental workflow. It is therefore desirable to develop an analytical approach for GAG sequencing that does not require derivatization or addition of reagents to the electrospray solution. Electron detachment dissociation (EDD) can produce extensive and informative fragmentation for GAGs without the need to remove free protons from the precursor ions. However, EDD is an inefficient process, often requiring consumption of large sample quantities (typically several micrograms), particularly for highly sulfated GAG ions. Here, we report that with improved instrumentation, optimization of the ionization and ion transfer parameters, and enhanced EDD efficiency, it is possible to generate highly informative EDD spectra of highly sulfated GAGs on the liquid chromatography (LC) timescale, with consumption of only a few nanograms of sample. We further show that negative electron transfer dissociation (NETD) is an even more effective fragmentation technique for GAG sequencing, producing fewer sulfate losses while consuming smaller amount of samples. Finally, a simple algorithm was developed for de novo HS sequencing based on their high-resolution tandem mass spectra. These results demonstrate the potential of EDD and NETD as sensitive analytical tools for detailed, high-throughput, de novo structural analyses of highly sulfated GAGs.
Collapse
Affiliation(s)
| | | | - Yang Mao
- Mass Spectrometry Resource, Department of Biochemistry, Boston University School of Medicine 670 Albany Street, Suite 504, Boston, Massachusetts 02118, United States
| | - Catherine E. Costello
- Mass Spectrometry Resource, Department of Biochemistry, Boston University School of Medicine 670 Albany Street, Suite 504, Boston, Massachusetts 02118, United States
| | - Joseph Zaia
- Mass Spectrometry Resource, Department of Biochemistry, Boston University School of Medicine 670 Albany Street, Suite 504, Boston, Massachusetts 02118, United States
| | - Cheng Lin
- Mass Spectrometry Resource, Department of Biochemistry, Boston University School of Medicine 670 Albany Street, Suite 504, Boston, Massachusetts 02118, United States
| |
Collapse
|
47
|
Bai H, Pan Y, Tong W, Zhang W, Ren X, Tian F, Peng B, Wang X, Zhang Y, Deng Y, Qin W, Qian X. Graphene based soft nanoreactors for facile “one-step” glycan enrichment and derivatization for MALDI-TOF-MS analysis. Talanta 2013; 117:1-7. [DOI: 10.1016/j.talanta.2013.08.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 08/14/2013] [Accepted: 08/17/2013] [Indexed: 12/13/2022]
|
48
|
Yu X, Jiang Y, Chen Y, Huang Y, Costello CE, Lin C. Detailed glycan structural characterization by electronic excitation dissociation. Anal Chem 2013; 85:10017-21. [PMID: 24080071 DOI: 10.1021/ac402886q] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The structural complexity and diversity of glycans parallel their multilateral functions in living systems. To better understand the vital roles glycans play in biological processes, it is imperative to develop analytical tools that can provide detailed glycan structural information. This was conventionally achieved by multistage tandem mass spectrometry (MS(n)) analysis using collision-induced dissociation (CID) as the fragmentation method. However, the MS(n) approach lacks the sensitivity and throughput needed to analyze complex glycan mixtures from biological sources, often available in limited quantities. We define herein the critical parameters for a recently developed fragmentation technique, electronic excitation dissociation (EED), which can yield rich structurally informative fragment ions during liquid chromatographic (LC)-MS/MS analysis of glycans. We further demonstrate that permethylation, reducing end labeling and judicious selection of the metal charge carrier, can greatly facilitate spectral interpretation. With its high sensitivity, throughput, and compatibility with online chromatographic separation techniques, EED appears to hold great promise for large-scale glycomics studies.
Collapse
Affiliation(s)
- Xiang Yu
- Department of Biochemistry, Boston University , 670 Albany St. Suite 504, Boston, Massachusetts 02118, United States
| | | | | | | | | | | |
Collapse
|
49
|
Gao J, Thomas DA, Sohn CH, Beauchamp JL. Biomimetic Reagents for the Selective Free Radical and Acid–Base Chemistry of Glycans: Application to Glycan Structure Determination by Mass Spectrometry. J Am Chem Soc 2013; 135:10684-92. [DOI: 10.1021/ja402810t] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jinshan Gao
- Arthur Amos Noyes Laboratory of
Chemical Physics, California Institute of Technology, Pasadena, California
91125, United States
| | - Daniel A. Thomas
- Arthur Amos Noyes Laboratory of
Chemical Physics, California Institute of Technology, Pasadena, California
91125, United States
| | - Chang Ho Sohn
- Arthur Amos Noyes Laboratory of
Chemical Physics, California Institute of Technology, Pasadena, California
91125, United States
| | - J. L. Beauchamp
- Arthur Amos Noyes Laboratory of
Chemical Physics, California Institute of Technology, Pasadena, California
91125, United States
| |
Collapse
|
50
|
Abstract
Powerful new strategies based on mass spectrometry are revolutionizing the structural analysis and profiling of glycans and glycoconjugates. We survey here the major biosynthetic pathways that underlie the biological diversity in glycobiology, with emphasis on glycoproteins, and the approaches that can be used to address the resulting heterogeneity. Included among these are derivatizations, on- and off-line chromatography, electrospray and matrix-assisted laser desorption/ionization, and a variety of dissociation methods, the recently introduced electron-based techniques being of particular interest.
Collapse
Affiliation(s)
- Liang Han
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, Boston, MA 02118, USA.
| | | |
Collapse
|