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Doi K, Mitani A, Nakakita SI, Higuchi Y, Takegawa K. Characterization of novel endo-β-N-acetylglucosaminidases from intestinal Barnesiella intestinihominis that hydrolyze multi-branched complex-type N-glycans. J Biosci Bioeng 2024; 137:101-107. [PMID: 38142217 DOI: 10.1016/j.jbiosc.2023.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/03/2023] [Accepted: 12/05/2023] [Indexed: 12/25/2023]
Abstract
Endo-β-N-acetylglucosaminidases (ENGases) are enzymes that hydrolyze N-linked glycans. Many ENGases have been characterized, but few have been identified with hydrolytic activity towards multi-branched complex-type N-glycans. In this study, three candidate ENGases were identified from Barnesiella intestinihominis based on database searches and phylogenetic analysis. A domain search identified the N x E motif in all three candidates, suggesting that they were members of glycosyl hydrolase family 85 (GH85). The three candidate ENGases, named Endo-BIN1, Endo-BIN2, and Endo-BIN3, were expressed in Escherichia coli cells, and their hydrolytic activity towards N-glycans and glycoproteins was measured by high performance liquid chromatography analysis and SDS-PAGE analysis. All ENGases showed hydrolytic activity towards glycoproteins, but only Endo-BIN2 and Endo-BIN3 showed hydrolytic activity towards pyridylaminated N-glycans. The optimum pH of Endo-BIN1, Endo-BIN2, and End-BIN3 was pH 6.5, 4.0, and 7.0, respectively. We measured substrate specificities of Endo-BIN2 and Endo-BIN3 towards pyridylaminated N-glycans, and found that the two Endo-BIN enzymes showed similar substrate specificity, preferring bi-antennary complex-type N-glycans with galactose or α2,6-linked sialic acid residues at the non-reducing ends. Endo-BIN2 and Endo-BIN3 were also able to hydrolyze multi-branched complex-type N-glycans. SDS-PAGE analysis revealed that all Endo-BIN enzymes were capable of releasing complex-type N-glycans from glycoproteins such as rituximab, transferrin, and fetuin. We expect that B. intestinihominis possesses ENGases to facilitate the utilization of complex-type N-glycans from host cells. These findings will have applications in N-glycan remodeling of glycoproteins and the development of pharmaceuticals.
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Affiliation(s)
- Kanako Doi
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ai Mitani
- Fushimi Pharmaceutical Co. Ltd., Marugame, Kagawa 763-8605, Japan
| | | | - Yujiro Higuchi
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kaoru Takegawa
- Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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2
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Jayawardena N, Miles LA, Burga LN, Rudin C, Wolf M, Poirier JT, Bostina M. N-Linked Glycosylation on Anthrax Toxin Receptor 1 Is Essential for Seneca Valley Virus Infection. Viruses 2021; 13:v13050769. [PMID: 33924774 PMCID: PMC8145208 DOI: 10.3390/v13050769] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/22/2021] [Accepted: 04/25/2021] [Indexed: 01/12/2023] Open
Abstract
Seneca Valley virus (SVV) is a picornavirus with potency in selectively infecting and lysing cancerous cells. The cellular receptor for SVV mediating the selective tropism for tumors is anthrax toxin receptor 1 (ANTXR1), a type I transmembrane protein expressed in tumors. Similar to other mammalian receptors, ANTXR1 has been shown to harbor N-linked glycosylation sites in its extracellular vWA domain. However, the exact role of ANTXR1 glycosylation on SVV attachment and cellular entry was unknown. Here we show that N-linked glycosylation in the ANTXR1 vWA domain is necessary for SVV attachment and entry. In our study, tandem mass spectrometry analysis of recombinant ANTXR1-Fc revealed the presence of complex glycans at N166, N184 in the vWA domain, and N81 in the Fc domain. Symmetry-expanded cryo-EM reconstruction of SVV-ANTXR1-Fc further validated the presence of N166 and N184 in the vWA domain. Cell blocking, co-immunoprecipitation, and plaque formation assays confirmed that deglycosylation of ANTXR1 prevents SVV attachment and subsequent entry. Overall, our results identified N-glycosylation in ANTXR1 as a necessary post-translational modification for establishing stable interactions with SVV. We anticipate our findings will aid in selecting patients for future cancer therapeutics, where screening for both ANTXR1 and its glycosylation could lead to an improved outcome from SVV therapy.
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Affiliation(s)
- Nadishka Jayawardena
- Department of Microbiology and Immunology, University of Otago, Dunedin 9016, New Zealand; (N.J.); (L.N.B.)
- Molecular Cryo-Electron Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa 904-0495, Japan
| | - Linde A. Miles
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA;
| | - Laura N. Burga
- Department of Microbiology and Immunology, University of Otago, Dunedin 9016, New Zealand; (N.J.); (L.N.B.)
| | - Charles Rudin
- Druckenmiller Center for Lung Cancer Research and Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA;
| | - Matthias Wolf
- Molecular Cryo-Electron Microscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa 904-0495, Japan
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan
- Correspondence: (M.W.); (J.T.P.); (M.B.)
| | - John T. Poirier
- Druckenmiller Center for Lung Cancer Research and Department of Medicine, Thoracic Oncology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA;
- Laura and Isaac Perlmutter Cancer Center, New York University Langone Health, New York, NY 10016, USA
- Correspondence: (M.W.); (J.T.P.); (M.B.)
| | - Mihnea Bostina
- Department of Microbiology and Immunology, University of Otago, Dunedin 9016, New Zealand; (N.J.); (L.N.B.)
- Otago Micro and Nano Imaging Centre, University of Otago, Dunedin 9016, New Zealand
- Correspondence: (M.W.); (J.T.P.); (M.B.)
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3
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Martins ÁM, Ramos CC, Freitas D, Reis CA. Glycosylation of Cancer Extracellular Vesicles: Capture Strategies, Functional Roles and Potential Clinical Applications. Cells 2021; 10:cells10010109. [PMID: 33430152 PMCID: PMC7827205 DOI: 10.3390/cells10010109] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 12/29/2020] [Accepted: 01/04/2021] [Indexed: 12/12/2022] Open
Abstract
Glycans are major constituents of extracellular vesicles (EVs). Alterations in the glycosylation pathway are a common feature of cancer cells, which gives rise to de novo or increased synthesis of particular glycans. Therefore, glycans and glycoproteins have been widely used in the clinic as both stratification and prognosis cancer biomarkers. Interestingly, several of the known tumor-associated glycans have already been identified in cancer EVs, highlighting EV glycosylation as a potential source of circulating cancer biomarkers. These particles are crucial vehicles of cell–cell communication, being able to transfer molecular information and to modulate the recipient cell behavior. The presence of particular glycoconjugates has been described to be important for EV protein sorting, uptake and organ-tropism. Furthermore, specific EV glycans or glycoproteins have been described to be able to distinguish tumor EVs from benign EVs. In this review, the application of EV glycosylation in the development of novel EV detection and capture methodologies is discussed. In addition, we highlight the potential of EV glycosylation in the clinical setting for both cancer biomarker discovery and EV therapeutic delivery strategies.
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Affiliation(s)
- Álvaro M. Martins
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal; (Á.M.M.); (C.C.R.)
- Institute of Molecular Pathology and Immunology (IPATIMUP), University of Porto, 4200-135 Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal
| | - Cátia C. Ramos
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal; (Á.M.M.); (C.C.R.)
- Institute of Molecular Pathology and Immunology (IPATIMUP), University of Porto, 4200-135 Porto, Portugal
- Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Daniela Freitas
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal; (Á.M.M.); (C.C.R.)
- Institute of Molecular Pathology and Immunology (IPATIMUP), University of Porto, 4200-135 Porto, Portugal
- Correspondence: (D.F.); (C.A.R.); Tel.:+351-225-570-786 (C.A.R.)
| | - Celso A. Reis
- Institute for Research and Innovation in Health (i3S), University of Porto, 4200-135 Porto, Portugal; (Á.M.M.); (C.C.R.)
- Institute of Molecular Pathology and Immunology (IPATIMUP), University of Porto, 4200-135 Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), University of Porto, 4050-313 Porto, Portugal
- Faculty of Medicine of the University of Porto (FMUP), 4200-319 Porto, Portugal
- Correspondence: (D.F.); (C.A.R.); Tel.:+351-225-570-786 (C.A.R.)
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Guo J, Tu H, Rao B M, Chillara AK, Chang E, Atouf F. More comprehensive standards for monitoring glycosylation. Anal Biochem 2020; 612:113896. [PMID: 32818506 DOI: 10.1016/j.ab.2020.113896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 07/06/2020] [Accepted: 07/28/2020] [Indexed: 11/25/2022]
Abstract
Biologics manufacturers must continually monitor the attachment of carbohydrates, called glycans, to their products, because any variability can impact safety and efficacy. To help the industry meet this challenge, the United States Pharmacopeial Convention (USP) offers glycan reference standards and validated methods for glycoprofiling using high-performance liquid chromatography (HPLC). The industry has recently adopted more advanced technologies for glycan analysis, including ultra-high performance liquid chromatography (UHPLC) and mass spectrometry. In this study, we confirm that USP's glycan reference standards are compatible with UHPLC by demonstrating comparable peak separation and glycan identification to HPLC methods. The improved resolving power and shorter run-times of UHPLC also allowed us to identify many of the minor glycan components present in USP's glycan reference standards. These more comprehensively characterized glycan reference standards will enable manufacturers to assess the micro-heterogeneity that can negatively impact the safety and efficacy of biological products.
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Affiliation(s)
- Jingzhong Guo
- United States Pharmacopeial Convention, 12601 Twinbrook Pkwy, Rockville, MD, 20852, USA
| | - Huiping Tu
- United States Pharmacopeial Convention, 12601 Twinbrook Pkwy, Rockville, MD, 20852, USA
| | - Maheswara Rao B
- United States Pharmacopeial Convention, 12601 Twinbrook Pkwy, Rockville, MD, 20852, USA
| | | | - Edith Chang
- United States Pharmacopeial Convention, 12601 Twinbrook Pkwy, Rockville, MD, 20852, USA
| | - Fouad Atouf
- United States Pharmacopeial Convention, 12601 Twinbrook Pkwy, Rockville, MD, 20852, USA.
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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: 44] [Impact Index Per Article: 11.0] [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.
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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
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6
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De Leoz MLA, Duewer DL, Fung A, Liu L, Yau HK, Potter O, Staples GO, Furuki K, Frenkel R, Hu Y, Sosic Z, Zhang P, Altmann F, Grunwald-Grube C, Shao C, Zaia J, Evers W, Pengelley S, Suckau D, Wiechmann A, Resemann A, Jabs W, Beck A, Froehlich JW, Huang C, Li Y, Liu Y, Sun S, Wang Y, Seo Y, An HJ, Reichardt NC, Ruiz JE, Archer-Hartmann S, Azadi P, Bell L, Lakos Z, An Y, Cipollo JF, Pucic-Bakovic M, Štambuk J, Lauc G, Li X, Wang PG, Bock A, Hennig R, Rapp E, Creskey M, Cyr TD, Nakano M, Sugiyama T, Leung PKA, Link-Lenczowski P, Jaworek J, Yang S, Zhang H, Kelly T, Klapoetke S, Cao R, Kim JY, Lee HK, Lee JY, Yoo JS, Kim SR, Suh SK, de Haan N, Falck D, Lageveen-Kammeijer GSM, Wuhrer M, Emery RJ, Kozak RP, Liew LP, Royle L, Urbanowicz PA, Packer NH, Song X, Everest-Dass A, Lattová E, Cajic S, Alagesan K, Kolarich D, Kasali T, Lindo V, Chen Y, Goswami K, Gau B, Amunugama R, Jones R, Stroop CJM, Kato K, Yagi H, Kondo S, Yuen CT, Harazono A, Shi X, Magnelli PE, Kasper BT, Mahal L, Harvey DJ, O'Flaherty R, Rudd PM, Saldova R, Hecht ES, Muddiman DC, Kang J, Bhoskar P, Menard D, Saati A, Merle C, Mast S, Tep S, Truong J, Nishikaze T, Sekiya S, Shafer A, Funaoka S, Toyoda M, de Vreugd P, Caron C, Pradhan P, Tan NC, Mechref Y, Patil S, Rohrer JS, Chakrabarti R, Dadke D, Lahori M, Zou C, Cairo C, Reiz B, Whittal RM, Lebrilla CB, Wu L, Guttman A, Szigeti M, Kremkow BG, Lee KH, Sihlbom C, Adamczyk B, Jin C, Karlsson NG, Örnros J, Larson G, Nilsson J, Meyer B, Wiegandt A, Komatsu E, Perreault H, Bodnar ED, Said N, Francois YN, Leize-Wagner E, Maier S, Zeck A, Heck AJR, Yang Y, Haselberg R, Yu YQ, Alley W, Leone JW, Yuan H, Stein SE. NIST Interlaboratory Study on Glycosylation Analysis of Monoclonal Antibodies: Comparison of Results from Diverse Analytical Methods. Mol Cell Proteomics 2020; 19:11-30. [PMID: 31591262 PMCID: PMC6944243 DOI: 10.1074/mcp.ra119.001677] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/26/2019] [Indexed: 01/24/2023] Open
Abstract
Glycosylation is a topic of intense current interest in the development of biopharmaceuticals because it is related to drug safety and efficacy. This work describes results of an interlaboratory study on the glycosylation of the Primary Sample (PS) of NISTmAb, a monoclonal antibody reference material. Seventy-six laboratories from industry, university, research, government, and hospital sectors in Europe, North America, Asia, and Australia submitted a total of 103 reports on glycan distributions. The principal objective of this study was to report and compare results for the full range of analytical methods presently used in the glycosylation analysis of mAbs. Therefore, participation was unrestricted, with laboratories choosing their own measurement techniques. Protein glycosylation was determined in various ways, including at the level of intact mAb, protein fragments, glycopeptides, or released glycans, using a wide variety of methods for derivatization, separation, identification, and quantification. Consequently, the diversity of results was enormous, with the number of glycan compositions identified by each laboratory ranging from 4 to 48. In total, one hundred sixteen glycan compositions were reported, of which 57 compositions could be assigned consensus abundance values. These consensus medians provide community-derived values for NISTmAb PS. Agreement with the consensus medians did not depend on the specific method or laboratory type. The study provides a view of the current state-of-the-art for biologic glycosylation measurement and suggests a clear need for harmonization of glycosylation analysis methods.
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Affiliation(s)
- Maria Lorna A De Leoz
- Mass Spectrometry Data Center, Biomolecular Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, Maryland 20899.
| | - David L Duewer
- Chemical Sciences Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, Maryland 20899
| | - Adam Fung
- Analytical Development, Agensys, Inc., 1800 Steward Street Santa Monica, California 90404
| | - Lily Liu
- Analytical Development, Agensys, Inc., 1800 Steward Street Santa Monica, California 90404
| | - Hoi Kei Yau
- Analytical Development, Agensys, Inc., 1800 Steward Street Santa Monica, California 90404
| | - Oscar Potter
- Agilent Technologies, Inc., 5301 Stevens Creek Blvd Santa Clara, California 95051
| | - Gregory O Staples
- Agilent Technologies, Inc., 5301 Stevens Creek Blvd Santa Clara, California 95051
| | - Kenichiro Furuki
- Astellas Pharma, 5-2-3 Tokodai, Tsukiba, Ibaraki, 300-2698, Japan
| | - Ruth Frenkel
- Analytical Development, Biogen, 14 Cambridge Center Cambridge, Massachusetts 02142
| | - Yunli Hu
- Analytical Development, Biogen, 14 Cambridge Center Cambridge, Massachusetts 02142
| | - Zoran Sosic
- Analytical Development, Biogen, 14 Cambridge Center Cambridge, Massachusetts 02142
| | - Peiqing Zhang
- Bioprocessing Technology Institute, 20 Biopolis Way, Level 3 Singapore 138668
| | - Friedrich Altmann
- Department of Chemistry, University of Natural Resources and Life Science, Vienna (BOKU), Muthgasse 18 1190 Wien, Austria
| | - Clemens Grunwald-Grube
- Department of Chemistry, University of Natural Resources and Life Science, Vienna (BOKU), Muthgasse 18 1190 Wien, Austria
| | - Chun Shao
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street Boston, Massachusetts 02118
| | - Joseph Zaia
- Center for Biomedical Mass Spectrometry, Boston University School of Medicine, 670 Albany Street Boston, Massachusetts 02118
| | - Waltraud Evers
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | | | - Detlev Suckau
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | - Anja Wiechmann
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | - Anja Resemann
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany
| | - Wolfgang Jabs
- Bruker Daltonik GmbH, Fahrenheitstr. 4, 28359 Bremen, Germany; Department of Life Sciences & Technology, Beuth Hochschule für Technik Berlin, Seestraβe 64, 13347 Berlin, Germany
| | - Alain Beck
- Centre d'Immunologie Pierre Fabre, 5 Avenue Napoléon III, BP 60497, 74164 St Julien-en-Genevois, France
| | - John W Froehlich
- Department of Urology, Boston Children's Hospital, 300 Longwood Avenue Boston Massachusetts 02115
| | - Chuncui Huang
- Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Yan Li
- Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Yaming Liu
- Institute of Biophysics, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Shiwei Sun
- Key Lab of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Yaojun Wang
- Key Lab of Intelligent Information Processing, Institute of Computing Technology, Chinese Academy of Sciences, 15 Da Tun Road, Chaoyang District, Beijing 100101 China
| | - Youngsuk Seo
- Graduate School of Analytical Science and Technology, Chungnam National University, Gung-dong 220, Yuseong-Gu, Daejeon 305-764, Korea (South)
| | - Hyun Joo An
- Graduate School of Analytical Science and Technology, Chungnam National University, Gung-dong 220, Yuseong-Gu, Daejeon 305-764, Korea (South)
| | | | | | - Stephanie Archer-Hartmann
- Analytical Services, Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road Athens, Georgia 30602
| | - Parastoo Azadi
- Analytical Services, Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road Athens, Georgia 30602
| | - Len Bell
- BioCMC Solutions (Large Molecules), Covance Laboratories Limited, Otley Road, Harrogate, North Yorks HG3 1PY, United Kingdom
| | - Zsuzsanna Lakos
- Biochemistry Method Development & Validation, Eurofins Lancaster Laboratories, Inc., 2425 New Holland Pike Lancaster, Pennsylvania 17601
| | - Yanming An
- Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993
| | - John F Cipollo
- Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993
| | - Maja Pucic-Bakovic
- Glycoscience Research Laboratory, Genos, Borongajska cesta 83h, 10 000 Zagreb, Croatia
| | - Jerko Štambuk
- Glycoscience Research Laboratory, Genos, Borongajska cesta 83h, 10 000 Zagreb, Croatia
| | - Gordan Lauc
- Glycoscience Research Laboratory, Genos, Borongajska cesta 83h, 10 000 Zagreb, Croatia; Faculty of Pharmacy and Biochemistry, University of Zagreb, A. Kovačića 1, 10 000 Zagreb, Croatia
| | - Xu Li
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue, Atlanta, Georgia 30303
| | - Peng George Wang
- Department of Chemistry, Georgia State University, 100 Piedmont Avenue, Atlanta, Georgia 30303
| | - Andreas Bock
- glyXera GmbH, Brenneckestrasse 20 * ZENIT / 39120 Magdeburg, Germany
| | - René Hennig
- glyXera GmbH, Brenneckestrasse 20 * ZENIT / 39120 Magdeburg, Germany
| | - Erdmann Rapp
- glyXera GmbH, Brenneckestrasse 20 * ZENIT / 39120 Magdeburg, Germany; AstraZeneca, Granta Park, Cambridgeshire, CB21 6GH United Kingdom
| | - Marybeth Creskey
- Health Products and Foods Branch, Health Canada, AL 2201E, 251 Sir Frederick Banting Driveway, Ottawa, Ontario, K1A 0K9 Canada
| | - Terry D Cyr
- Health Products and Foods Branch, Health Canada, AL 2201E, 251 Sir Frederick Banting Driveway, Ottawa, Ontario, K1A 0K9 Canada
| | - Miyako Nakano
- Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama Higashi-Hiroshima 739-8530 Japan
| | - Taiki Sugiyama
- Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama Higashi-Hiroshima 739-8530 Japan
| | | | - Paweł Link-Lenczowski
- Department of Medical Physiology, Jagiellonian University Medical College, ul. Michalowskiego 12, 31-126 Krakow, Poland
| | - Jolanta Jaworek
- Department of Medical Physiology, Jagiellonian University Medical College, ul. Michalowskiego 12, 31-126 Krakow, Poland
| | - Shuang Yang
- Department of Pathology, Johns Hopkins University, 400 N. Broadway Street Baltimore, Maryland 21287
| | - Hui Zhang
- Department of Pathology, Johns Hopkins University, 400 N. Broadway Street Baltimore, Maryland 21287
| | - Tim Kelly
- Mass Spec Core Facility, KBI Biopharma, 1101 Hamlin Road Durham, North Carolina 27704
| | - Song Klapoetke
- Mass Spec Core Facility, KBI Biopharma, 1101 Hamlin Road Durham, North Carolina 27704
| | - Rui Cao
- Mass Spec Core Facility, KBI Biopharma, 1101 Hamlin Road Durham, North Carolina 27704
| | - Jin Young Kim
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Hyun Kyoung Lee
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Ju Yeon Lee
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Jong Shin Yoo
- Division of Mass Spectrometry, Korea Basic Science Institute, 162 YeonGuDanji-Ro, Ochang-eup, Cheongwon-gu, Cheongju Chungbuk, 363-883 Korea (South)
| | - Sa-Rang Kim
- Advanced Therapy Products Research Division, Korea National Institute of Food and Drug Safety, 187 Osongsaengmyeong 2-ro Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 363-700, Korea (South)
| | - Soo-Kyung Suh
- Advanced Therapy Products Research Division, Korea National Institute of Food and Drug Safety, 187 Osongsaengmyeong 2-ro Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 363-700, Korea (South)
| | - Noortje de Haan
- Center for Proteomics and Metabolomics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - David Falck
- Center for Proteomics and Metabolomics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | | | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Robert J Emery
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Radoslaw P Kozak
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Li Phing Liew
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Louise Royle
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Paulina A Urbanowicz
- Ludger Limited, Culham Science Centre, Abingdon, Oxfordshire, OX14 3EB, United Kingdom
| | - Nicolle H Packer
- Biomolecular Discovery and Design Research Centre and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, North Ryde, Australia
| | - Xiaomin Song
- Biomolecular Discovery and Design Research Centre and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, North Ryde, Australia
| | - Arun Everest-Dass
- Biomolecular Discovery and Design Research Centre and ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, North Ryde, Australia
| | - Erika Lattová
- Proteomics, Central European Institute for Technology, Masaryk University, Kamenice 5, A26, 625 00 BRNO, Czech Republic
| | - Samanta Cajic
- Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstrasse 1, 39106 Magdeburg, Germany
| | - Kathirvel Alagesan
- Department of Biomolecular Sciences, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Daniel Kolarich
- Department of Biomolecular Sciences, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany
| | - Toyin Kasali
- AstraZeneca, Granta Park, Cambridgeshire, CB21 6GH United Kingdom
| | - Viv Lindo
- AstraZeneca, Granta Park, Cambridgeshire, CB21 6GH United Kingdom
| | - Yuetian Chen
- Merck, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Kudrat Goswami
- Merck, 2015 Galloping Hill Rd, Kenilworth, New Jersey 07033
| | - Brian Gau
- Analytical R&D, MilliporeSigma, 2909 Laclede Ave. St. Louis, Missouri 63103
| | - Ravi Amunugama
- MS Bioworks, LLC, 3950 Varsity Drive Ann Arbor, Michigan 48108
| | - Richard Jones
- MS Bioworks, LLC, 3950 Varsity Drive Ann Arbor, Michigan 48108
| | | | - Koichi Kato
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji, Okazaki 444-8787 Japan; Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuhoku, Nagoya 467-8603 Japan
| | - Hirokazu Yagi
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuhoku, Nagoya 467-8603 Japan
| | - Sachiko Kondo
- Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1 Tanabe-dori, Mizuhoku, Nagoya 467-8603 Japan; Medical & Biological Laboratories Co., Ltd, 2-22-8 Chikusa, Chikusa-ku, Nagoya 464-0858 Japan
| | - C T Yuen
- National Institute for Biological Standards and Control, Blanche Lane, South Mimms, Potters Bar, Hertfordshire EN6 3QG United Kingdom
| | - Akira Harazono
- Division of Biological Chemistry & Biologicals, National Institute of Health Sciences, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo 158-8501 Japan
| | - Xiaofeng Shi
- New England Biolabs, Inc., 240 County Road, Ipswich, Massachusetts 01938
| | - Paula E Magnelli
- New England Biolabs, Inc., 240 County Road, Ipswich, Massachusetts 01938
| | - Brian T Kasper
- New York University, 100 Washington Square East New York City, New York 10003
| | - Lara Mahal
- New York University, 100 Washington Square East New York City, New York 10003
| | - David J Harvey
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom
| | - Roisin O'Flaherty
- GlycoScience Group, The National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, Ireland
| | - Pauline M Rudd
- GlycoScience Group, The National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, Ireland
| | - Radka Saldova
- GlycoScience Group, The National Institute for Bioprocessing Research and Training, Fosters Avenue, Mount Merrion, Blackrock, Co. Dublin, Ireland
| | - Elizabeth S Hecht
- Department of Chemistry, North Carolina State University, 2620 Yarborough Drive Raleigh, North Carolina 27695
| | - David C Muddiman
- Department of Chemistry, North Carolina State University, 2620 Yarborough Drive Raleigh, North Carolina 27695
| | - Jichao Kang
- Pantheon, 201 College Road East Princeton, New Jersey 08540
| | | | | | - Andrew Saati
- Pfizer Inc., 1 Burtt Road Andover, Massachusetts 01810
| | - Christine Merle
- Proteodynamics, ZI La Varenne 20-22 rue Henri et Gilberte Goudier 63200 RIOM, France
| | - Steven Mast
- ProZyme, Inc., 3832 Bay Center Place Hayward, California 94545
| | - Sam Tep
- ProZyme, Inc., 3832 Bay Center Place Hayward, California 94545
| | - Jennie Truong
- ProZyme, Inc., 3832 Bay Center Place Hayward, California 94545
| | - Takashi Nishikaze
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, 1 Nishinokyo Kuwabara-cho Nakagyo-ku, Kyoto, 604 8511 Japan
| | - Sadanori Sekiya
- Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, 1 Nishinokyo Kuwabara-cho Nakagyo-ku, Kyoto, 604 8511 Japan
| | - Aaron Shafer
- Children's GMP LLC, St. Jude Children's Research Hospital, 262 Danny Thomas Place Memphis, Tennessee 38105
| | - Sohei Funaoka
- Sumitomo Bakelite Co., Ltd., 1-5 Muromati 1-Chome, Nishiku, Kobe, 651-2241 Japan
| | - Masaaki Toyoda
- Sumitomo Bakelite Co., Ltd., 1-5 Muromati 1-Chome, Nishiku, Kobe, 651-2241 Japan
| | - Peter de Vreugd
- Synthon Biopharmaceuticals, Microweg 22 P.O. Box 7071, 6503 GN Nijmegen, The Netherlands
| | - Cassie Caron
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street Cambridge, Massachusetts 02139
| | - Pralima Pradhan
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street Cambridge, Massachusetts 02139
| | - Niclas Chiang Tan
- Takeda Pharmaceuticals International Co., 40 Landsdowne Street Cambridge, Massachusetts 02139
| | - Yehia Mechref
- Department of Chemistry and Biochemistry, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409
| | - Sachin Patil
- Thermo Fisher Scientific, 1214 Oakmead Parkway Sunnyvale, California 94085
| | - Jeffrey S Rohrer
- Thermo Fisher Scientific, 1214 Oakmead Parkway Sunnyvale, California 94085
| | - Ranjan Chakrabarti
- United States Pharmacopeia India Pvt. Ltd. IKP Knowledge Park, Genome Valley, Shamirpet, Turkapally Village, Medchal District, Hyderabad 500 101 Telangana, India
| | - Disha Dadke
- United States Pharmacopeia India Pvt. Ltd. IKP Knowledge Park, Genome Valley, Shamirpet, Turkapally Village, Medchal District, Hyderabad 500 101 Telangana, India
| | - Mohammedazam Lahori
- United States Pharmacopeia India Pvt. Ltd. IKP Knowledge Park, Genome Valley, Shamirpet, Turkapally Village, Medchal District, Hyderabad 500 101 Telangana, India
| | - Chunxia Zou
- Alberta Glycomics Centre, University of Alberta, Edmonton, Alberta T6G 2G2 Canada; Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Christopher Cairo
- Alberta Glycomics Centre, University of Alberta, Edmonton, Alberta T6G 2G2 Canada; Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Béla Reiz
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Randy M Whittal
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2 Canada
| | - Carlito B Lebrilla
- Department of Chemistry, University of California, One Shields Ave, Davis, California 95616
| | - Lauren Wu
- Department of Chemistry, University of California, One Shields Ave, Davis, California 95616
| | - Andras Guttman
- Horváth Csaba Memorial Laboratory for Bioseparation Sciences, Research Center for Molecular Medicine, Doctoral School of Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Egyetem ter 1, Hungary
| | - Marton Szigeti
- Horváth Csaba Memorial Laboratory for Bioseparation Sciences, Research Center for Molecular Medicine, Doctoral School of Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Egyetem ter 1, Hungary; Translational Glycomics Research Group, Research Institute of Biomolecular and Chemical Engineering, University of Pannonia, Veszprem, Egyetem ut 10, Hungary
| | - Benjamin G Kremkow
- Delaware Biotechnology Institute, University of Delaware, 15 Innovation Way Newark, Delaware 19711
| | - Kelvin H Lee
- Delaware Biotechnology Institute, University of Delaware, 15 Innovation Way Newark, Delaware 19711
| | - Carina Sihlbom
- Proteomics Core Facility, University of Gothenburg, Medicinaregatan 1G SE 41390 Gothenburg, Sweden
| | - Barbara Adamczyk
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Chunsheng Jin
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Jessica Örnros
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Institute of Biomedicine, Sahlgrenska Academy, Medicinaregatan 9A, Box 440, 405 30, Gothenburg, Sweden
| | - Göran Larson
- Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska Academy at the University of Gothenburg, Bruna Straket 16, 41345 Gothenburg, Sweden
| | - Jonas Nilsson
- Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska Academy at the University of Gothenburg, Bruna Straket 16, 41345 Gothenburg, Sweden
| | - Bernd Meyer
- Department of Chemistry, University of Hamburg, Martin Luther King Pl. 6 20146 Hamburg, Germany
| | - Alena Wiegandt
- Department of Chemistry, University of Hamburg, Martin Luther King Pl. 6 20146 Hamburg, Germany
| | - Emy Komatsu
- Department of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, Canada R3T 2N2
| | - Helene Perreault
- Department of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, Canada R3T 2N2
| | - Edward D Bodnar
- Department of Chemistry, University of Manitoba, 144 Dysart Road, Winnipeg, Manitoba, Canada R3T 2N2; Agilent Technologies, Inc., 5301 Stevens Creek Blvd Santa Clara, California 95051
| | - Nassur Said
- Laboratory of Mass Spectrometry of Interactions and Systems, University of Strasbourg, UMR Unistra-CNRS 7140, France
| | - Yannis-Nicolas Francois
- Laboratory of Mass Spectrometry of Interactions and Systems, University of Strasbourg, UMR Unistra-CNRS 7140, France
| | - Emmanuelle Leize-Wagner
- Laboratory of Mass Spectrometry of Interactions and Systems, University of Strasbourg, UMR Unistra-CNRS 7140, France
| | - Sandra Maier
- Natural and Medical Sciences Institute, University of Tübingen, Markwiesenstraβe 55, 72770 Reutlingen, Germany
| | - Anne Zeck
- Natural and Medical Sciences Institute, University of Tübingen, Markwiesenstraβe 55, 72770 Reutlingen, Germany
| | - Albert J R Heck
- Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Yang Yang
- Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Rob Haselberg
- Division of Bioanalytical Chemistry, Amsterdam Institute for Molecules, Medicines and Systems, Vrije Universiteit Amsterdam, de Boelelaan 1085, 1081 HV Amsterdam, The Netherlands
| | - Ying Qing Yu
- Department of Chemistry, Waters Corporation, 34 Maple Street Milford, Massachusetts 01757
| | - William Alley
- Department of Chemistry, Waters Corporation, 34 Maple Street Milford, Massachusetts 01757
| | | | - Hua Yuan
- Zoetis, 333 Portage St. Kalamazoo, Michigan 49007
| | - Stephen E Stein
- Mass Spectrometry Data Center, Biomolecular Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, Maryland 20899
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7
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Kim W, Kim J, You S, Do J, Jang Y, Kim D, Lee J, Ha J, Kim HH. Qualitative and quantitative characterization of sialylated N-glycans using three fluorophores, two columns, and two instrumentations. Anal Biochem 2019; 571:40-48. [PMID: 30797744 DOI: 10.1016/j.ab.2019.02.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/12/2019] [Accepted: 02/13/2019] [Indexed: 10/27/2022]
Abstract
Sialylation can influence the stability, half-life, and immunogenicity of glycoproteins, but sialylated N-glycans are known to be difficult to analyze. Human alpha1-acid glycoprotein (AGP) is reported to have glycans that consist of sialylated N-glycans. The N-glycan profiling of AGP is qualitatively and quantitatively investigated here by UPLC and LC-ESI-MS/MS. Three fluorescent tags (AB, AA, and ProA) and two separation columns (HILIC and AEX-HILIC) were adopted to confirm and compare each analytical characteristic. The results of AA were comparable to those of the well-established AB. The qualification of ProA was notable due to its superior fluorescence intensity and ionization efficiency, and ProA showed smaller quantitative or larger-sized fragments in LC-ESI-MS/MS compared to AB and AA. However, the MS quantification of ProA was distorted because the increased sialylation level decreased the LC-ESI-MS/MS ionization efficiency. HILIC had better peak separability, AEX-HILIC had an advantage in UPLC sialylation profiling, and each isomeric glycan could be identified by both columns in LC-ESI-MS/MS. In conclusion, ProA is favored for UPLC and LC-ESI-MS/MS detection but not reliable for MS quantification. This study firstly demonstrates the qualification and quantification of sialylated N-glycans by comparing the commonly used analytical conditions with different fluorescent tags, columns, and instruments.
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Affiliation(s)
- Wooseok Kim
- Biotherapeutics and Glycomics Laboratory, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06944, South Korea
| | - Jihye Kim
- Biotherapeutics and Glycomics Laboratory, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06944, South Korea
| | - Seungkwan You
- Biotherapeutics and Glycomics Laboratory, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06944, South Korea
| | - Jonghye Do
- Biotherapeutics and Glycomics Laboratory, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06944, South Korea
| | - Yeonjoo Jang
- Biotherapeutics and Glycomics Laboratory, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06944, South Korea
| | - Donghwi Kim
- Biotherapeutics and Glycomics Laboratory, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06944, South Korea
| | - Junmyoung Lee
- Biotherapeutics and Glycomics Laboratory, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06944, South Korea
| | - Jongkwan Ha
- Biotherapeutics and Glycomics Laboratory, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06944, South Korea
| | - Ha Hyung Kim
- Biotherapeutics and Glycomics Laboratory, College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06944, South Korea.
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8
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Giorgetti J, D'Atri V, Canonge J, Lechner A, Guillarme D, Colas O, Wagner-Rousset E, Beck A, Leize-Wagner E, François YN. Monoclonal antibody N-glycosylation profiling using capillary electrophoresis - Mass spectrometry: Assessment and method validation. Talanta 2017; 178:530-537. [PMID: 29136858 DOI: 10.1016/j.talanta.2017.09.083] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/20/2017] [Accepted: 09/28/2017] [Indexed: 01/08/2023]
Abstract
Characterization of therapeutic proteins represents a major challenge for analytical sciences due to their heterogeneity caused by post-translational modifications (PTM). Among these PTM, glycosylation which is possibly the most prominent, require comprehensive identification because of their major influence on protein structure and effector functions of monoclonal antibodies (mAbs). As a consequence, glycosylation profiling must be deeply characterized. For this application, several analytical methods such as separation-based or MS-based methods, were evaluated. However, no CE-ESI-MS approach has been assessed and validated. Here, we illustrate how the use of CE-ESI-MS method permits the comprehensive characterization of mAbs N-glycosylation at the glycopeptide level to perform relative quantitation of N-glycan species. Validation of the CE-ESI-MS method in terms of robustness and reproducibility was demonstrated through the relative quantitation of glycosylation profiles for ten different mAbs produced in different cell lines. Glycosylation patterns obtained for each mAbs were compared to Hydrophilic Interaction Chromatography of 2-aminobenzamide labelled glycans with fluorescence detector (HILIC-FD) analysis considered as a reference method. Very similar glycoprofiling were obtained with the CE-ESI-MS and HILIC-FD demonstrating the attractiveness of CE-ESI-MS method to characterize and quantify the glycosylation heterogeneity of a wide range of therapeutic mAbs with high accuracy and precision.
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Affiliation(s)
- Jérémie Giorgetti
- Laboratoire de Spectrométrie de Masse des Interactions et des Systèmes (LSMIS), UMR 7140 (Unistra-CNRS), Université de Strasbourg, France
| | - Valentina D'Atri
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Centre Médical Universitaire (CMU), Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - Julie Canonge
- Laboratoire de Spectrométrie de Masse des Interactions et des Systèmes (LSMIS), UMR 7140 (Unistra-CNRS), Université de Strasbourg, France
| | - Antony Lechner
- Laboratoire de Spectrométrie de Masse des Interactions et des Systèmes (LSMIS), UMR 7140 (Unistra-CNRS), Université de Strasbourg, France
| | - Davy Guillarme
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Centre Médical Universitaire (CMU), Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - Olivier Colas
- Centre d'immunologie Pierre Fabre, Saint-Julien-en-Genevois, France
| | | | - Alain Beck
- Centre d'immunologie Pierre Fabre, Saint-Julien-en-Genevois, France
| | - Emmanuelle Leize-Wagner
- Laboratoire de Spectrométrie de Masse des Interactions et des Systèmes (LSMIS), UMR 7140 (Unistra-CNRS), Université de Strasbourg, France
| | - Yannis-Nicolas François
- Laboratoire de Spectrométrie de Masse des Interactions et des Systèmes (LSMIS), UMR 7140 (Unistra-CNRS), Université de Strasbourg, France.
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9
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Liu G, Cheng K, Lo CY, Li J, Qu J, Neelamegham S. A Comprehensive, Open-source Platform for Mass Spectrometry-based Glycoproteomics Data Analysis. Mol Cell Proteomics 2017; 16:2032-2047. [PMID: 28887379 DOI: 10.1074/mcp.m117.068239] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 08/23/2017] [Indexed: 12/12/2022] Open
Abstract
Glycosylation is among the most abundant and diverse protein post-translational modifications (PTMs) identified to date. The structural analysis of this PTM is challenging because of the diverse monosaccharides which are not conserved among organisms, the branched nature of glycans, their isomeric structures, and heterogeneity in the glycan distribution at a given site. Glycoproteomics experiments have adopted the traditional high-throughput LC-MSn proteomics workflow to analyze site-specific glycosylation. However, comprehensive computational platforms for data analyses are scarce. To address this limitation, we present a comprehensive, open-source, modular software for glycoproteomics data analysis called GlycoPAT (GlycoProteomics Analysis Toolbox; freely available from www.VirtualGlycome.org/glycopat). The program includes three major advances: (1) "SmallGlyPep," a minimal linear representation of glycopeptides for MSn data analysis. This format allows facile serial fragmentation of both the peptide backbone and PTM at one or more locations. (2) A novel scoring scheme based on calculation of the "Ensemble Score (ES)," a measure that scores and rank-orders MS/MS spectrum for N- and O-linked glycopeptides using cross-correlation and probability based analyses. (3) A false discovery rate (FDR) calculation scheme where decoy glycopeptides are created by simultaneously scrambling the amino acid sequence and by introducing artificial monosaccharides by perturbing the original sugar mass. Parallel computing facilities and user-friendly GUIs (Graphical User Interfaces) are also provided. GlycoPAT is used to catalogue site-specific glycosylation on simple glycoproteins, standard protein mixtures and human plasma cryoprecipitate samples in three common MS/MS fragmentation modes: CID, HCD and ETD. It is also used to identify 960 unique glycopeptides in cell lysates from prostate cancer cells. The results show that the simultaneous consideration of peptide and glycan fragmentation is necessary for high quality MSn spectrum annotation in CID and HCD fragmentation modes. Additionally, they confirm the suitability of GlycoPAT to analyze shotgun glycoproteomics data.
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Affiliation(s)
- Gang Liu
- From the ‡Chemical and Biological Engineering
| | - Kai Cheng
- From the ‡Chemical and Biological Engineering.,§Clinical & Translational Research Center
| | - Chi Y Lo
- From the ‡Chemical and Biological Engineering
| | - Jun Li
- ¶Pharmaceutical Sciences; and.,‖New York State Center for Excellence in Bioinformatics and Life Sciences, Buffalo, New York
| | - Jun Qu
- ¶Pharmaceutical Sciences; and.,‖New York State Center for Excellence in Bioinformatics and Life Sciences, Buffalo, New York
| | - Sriram Neelamegham
- From the ‡Chemical and Biological Engineering; .,§Clinical & Translational Research Center
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10
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Surrogate CD16-expressing effector cell lines for determining the bioactivity of therapeutic monoclonal antibodies. J Pharm Biomed Anal 2017; 143:188-198. [PMID: 28605680 DOI: 10.1016/j.jpba.2017.06.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/01/2017] [Accepted: 06/03/2017] [Indexed: 12/12/2022]
Abstract
Traditional antibody dependent cellular cytotoxicity (ADCC) assays use donor derived natural killer (NK) or peripheral blood mononuclear cells, but donor genetic variability and the technically challenging nature of the assay means that alternative in vitro assay formats are required. We explored the utility of two reporter gene cell lines, the J2 and J9, as surrogate effector cells for ADCC assays. Both express the ADCC relevant Fcγ receptor CD16, crosslinking of which leads to firefly luciferase expression. For anti-CD20 rituximab and anti-HER2 trastuzumab (both IgG1 monoclonal antibodies, mAbs) a dose dependent firefly luciferase response was observed exclusively in the presence of their respective targets, representing the molecular interaction which potentiates ADCC activity. Importantly, both surrogate effector and NK cell based assays gave statistically similar values for rituximab ADCC activity. Increased engagement with target cell bound mAbs was determined to be cytotoxic for the J2 and J9 cell lines at the assay end point (at which luciferase expression is measured). However, use of the J9 cells containing the constitutively expressed renilla luciferase gene enabled data normalisation and corrected for fluctuations in both cell number and viability providing an advantage over currently available surrogate effector cell-lines. Abrogated ADCC activity with IgG4 mAbs, but enhanced activity with an IgG1 non-fucosylated mAb, was seen with the J9 cell line, as expected. Additionally, two rituximab products (biosimilars in development) with similar binding by flow cytometry, N-glycan profiles using HPLC and CD16 binding by surface plasmon resonance showed comparable ADCC activity to Mabthera. The ADCC activity of another anti-CD20 mAb, ofatumumab, reported only with primary cell based assays to date was also measured. This is the first report of a dual reporter gene based ADCC assay.
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11
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Jacobs JF, Wevers RA, Lefeber DJ, van Scherpenzeel M. Fast, robust and high-resolution glycosylation profiling of intact monoclonal IgG antibodies using nanoLC-chip-QTOF. Clin Chim Acta 2016; 461:90-7. [DOI: 10.1016/j.cca.2016.07.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 07/20/2016] [Accepted: 07/21/2016] [Indexed: 12/31/2022]
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12
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Xolin A, Norsikian S, Boyer FD, Beau JM. Iron(III)-Triflate-Catalyzed Multiple Glycosylations with Peracetylated β-d-Glucosamine. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600457] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Amandine Xolin
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Stéphanie Norsikian
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
| | - François-Didier Boyer
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
- Institut Jean-Pierre Bourgin; INRA; AgroParisTech; CNRS; Université Paris-Saclay; RD10 78026 Versailles France
| | - Jean-Marie Beau
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud; Université Paris-Saclay; 91405 Orsay France
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13
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Reusch D, Haberger M, Falck D, Peter B, Maier B, Gassner J, Hook M, Wagner K, Bonnington L, Bulau P, Wuhrer M. Comparison of methods for the analysis of therapeutic immunoglobulin G Fc-glycosylation profiles-Part 2: Mass spectrometric methods. MAbs 2016; 7:732-42. [PMID: 25996192 PMCID: PMC4622708 DOI: 10.1080/19420862.2015.1045173] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
To monitor the Fc glycosylation of therapeutic immunoglobulin G in bioprocess development, product characterization and release analytics, reliable techniques for glycosylation analysis are needed. Several analytical methods are suitable for this application. We recently presented results comparing detection methods for glycan analysis that are separation-based, but did not include mass spectrometry (MS). In the study reported here, we comprehensively compared MS-based methods for Fc glycosylation profiling of an IgG biopharmaceutical. A therapeutic antibody reference material was analyzed 6-fold on 2 different days, and the methods investigated were compared with respect to precision, accuracy, throughput and analysis time. Emphasis was put on the detection and quantitation of sialic acid-containing glycans. Eleven MS methods were compared to hydrophilic interaction liquid chromatography of 2-aminobenzamide labeled glycans with fluorescence detection, which served as a reference method and was also used in the first part of the study. The methods compared include electrospray MS of the heavy chain and Fc part after limited digestion, liquid chromatography MS of a tryptic digest, porous graphitized carbon chromatography MS of released glycans, electrospray MS of glycopeptides, as well as matrix assisted laser desorption ionization MS of glycans and glycopeptides. Most methods showed excellent precision and accuracy. Some differences were observed with regard to the detection and quantitation of low abundant glycan species like the sialylated glycans and the amount of artefacts due to in-source decay.
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Key Words
- 2-AB, 2-aminobenzamide
- CE, capillary electrophoresis
- ESI-MS
- ESI-MS, electrospray ionization-mass spectrometry
- Fab, fragment antigen-binding
- Fc, fragment crystallizable
- HILIC-UHPLC, hydrophilic interaction liquid chromatography-ultra high performance liquid chromatography
- HILIC-UPLC
- HPAEC-PAD, high-performance anion exchange chromatography with pulsed amperometric detection
- IdeS protease, proteolytic enzyme like protease from Streptococcus pyrogenes
- IgG glycosylation
- IgG, immunoglobulin G
- LC-MS
- LCMS, liquid chromatography-mass spectrometry
- MALDI, matrix assisted laser desorption ionization
- MALDI-MS
- PGC-MS, porous graphitized carbon chromatography- mass spectrometry
- PNGase F, Peptide-N-Glycosidase F
- RP-HPLC, reversed phase high performance liquid chromatography
- TIC, total ion chromatogram
- glycan analysis
- mAb, monoclonal antibody
- mass spectrometry
- method comparison
- monoclonal antibody (mAb)
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Affiliation(s)
- Dietmar Reusch
- a Pharma Biotech Development Penzberg; Roche Diagnostics GmbH ; Penzberg , Germany
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Etxebarria J, Reichardt NC. Methods for the absolute quantification of N-glycan biomarkers. Biochim Biophys Acta Gen Subj 2016; 1860:1676-87. [PMID: 26953846 DOI: 10.1016/j.bbagen.2016.03.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/01/2016] [Accepted: 03/02/2016] [Indexed: 12/28/2022]
Abstract
BACKGROUND Many treatment options especially for cancer show a low efficacy for the majority of patients demanding improved biomarker panels for patient stratification. Changes in glycosylation are a hallmark of many cancers and inflammatory diseases and show great potential as clinical disease markers. The large inter-subject variability in glycosylation due to hereditary and environmental factors can complicate rapid transfer of glycan markers into the clinical practice but also presents an opportunity for personalized medicine. SCOPE OF REVIEW This review discusses opportunities of glycan biomarkers in personalized medicine and reviews the methodology for N-glycan analysis with a specific focus on methods for absolute quantification. MAJOR CONCLUSIONS The entry into the clinical practice of glycan markers is delayed in large part due to a lack of adequate methodology for the precise and robust quantification of protein glycosylation. Only absolute glycan quantification can provide a complete picture of the disease related changes and will provide the method robustness required by clinical applications. GENERAL SIGNIFICANCE Glycan biomarkers have a huge potential as disease markers for personalized medicine. The use of stable isotope labeled glycans as internal standards and heavy-isotope labeling methods will provide the necessary method precision and robustness acceptable for clinical use. This article is part of a Special Issue entitled "Glycans in personalized medicine" Guest Editor: Professor Gordan Lauc.
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Affiliation(s)
- Juan Etxebarria
- CIC biomaGUNE, Paseo Miramon 182, 20009 San Sebastian, Spain
| | - Niels-Christian Reichardt
- CIC biomaGUNE, Paseo Miramon 182, 20009 San Sebastian, Spain; CIBER-BBN, Paseo Miramon 182, 20009 San Sebastian, Spain.
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15
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Abstract
MATERIALS AND METHODS This review focuses on the role of antibody sialylation and methods for its quantitation. The recent attribution of the anti-inflammatory activity of IgG to the sialylation of its glycans in the Fc region has raised interest in the fine structure and analysis of the glycans. The anti-inflammatory fraction of intravenous IgG could be isolated with the Sambucus nigra lectin. Experimental strategies for the assessment of antibody sialylation are discussed. RESULTS Thorough analysis of the lectin-binding fraction revealed that the antibody Fc region only binds to S. nigra lectin when two sialic acids are present, whereas for other glycoprotein ligands, one sialic acid appears sufficient.
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Affiliation(s)
- Johannes Stadlmann
- Department of Chemistry, University of Natural Resources and Applied Life Sciences (BOKU), Muthgasse 18, 1190, Vienna, Austria
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16
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Reusch D, Haberger M, Maier B, Maier M, Kloseck R, Zimmermann B, Hook M, Szabo Z, Tep S, Wegstein J, Alt N, Bulau P, Wuhrer M. Comparison of methods for the analysis of therapeutic immunoglobulin G Fc-glycosylation profiles--part 1: separation-based methods. MAbs 2015; 7:167-79. [PMID: 25524468 PMCID: PMC4623496 DOI: 10.4161/19420862.2014.986000] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Immunoglobulin G (IgG) crystallizable fragment (Fc) glycosylation is crucial for antibody effector functions, such as antibody-dependent cell-mediated cytotoxicity, and for their pharmacokinetic and pharmacodynamics behavior. To monitor the Fc-glycosylation in bioprocess development, as well as product characterization and release analytics, reliable techniques for glycosylation analysis are needed. A wide range of analytical methods has found its way into these applications. In this study, a comprehensive comparison was performed of separation-based methods for Fc-glycosylation profiling of an IgG biopharmaceutical. A therapeutic antibody reference material was analyzed 6-fold on 2 different days, and the methods were compared for precision, accuracy, throughput and other features; special emphasis was placed on the detection of sialic acid-containing glycans. Seven, non-mass spectrometric methods were compared; the methods utilized liquid chromatography-based separation of fluorescent-labeled glycans, capillary electrophoresis-based separation of fluorescent-labeled glycans, or high-performance anion exchange chromatography with pulsed amperometric detection. Hydrophilic interaction liquid chromatography-ultra high performance liquid chromatography of 2-aminobenzamide (2-AB)-labeled glycans was used as a reference method. All of the methods showed excellent precision and accuracy; some differences were observed, particularly with regard to the detection and quantitation of minor glycan species, such as sialylated glycans.
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Key Words
- 2-AB labeling
- 2-AB, 2-aminobenzamide
- ANTS, 8-aminonaphthalene-1, 3, 6-trisulfonate
- APTS labeling
- APTS, 8-aminopyrene-1, 3, 6-trisulfonic acid
- CCGE, cartridge-based capillary gel electrophoresis
- CE-LIF
- CE-LIF, capillary electrophoresis-laser induced fluorescence
- CHO, Chinese hamster ovary
- DNA analyzer
- DSA-FACE, DNA-sequencer-aided fluorophore-assisted carbohydrate electrophoresis
- ESI-MS, electrospray ionization-mass spectrometry
- Fab, fragment, antigen-binding
- Fc, fragment crystallizable
- HILIC-UPLC
- HILIC-UPLC, hydrophilic interaction liquid chromatography-ultra high performance liquid chromatography
- HPAEC
- HPAEC-PAD, high-performance anion exchange chromatography with pulsed amperometric detection
- HPLC, high performance liquid chromatography
- HR, high resolution
- IAB, InstantAB labeling
- IgG glycosylation
- IgG, immunoglobulin G
- MALDI-MS, matrix-assisted laser desorption/ionization-mass spectrometry
- glycan analysis
- high-throughput
- mAb, monoclonal antibody
- method comparison
- monoclonal antibody (mAb)
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Affiliation(s)
- Dietmar Reusch
- a Pharma Biotech Development Penzberg; Roche Diagnostics GmbH ; Penzberg , Germany
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17
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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18
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Aich U, Hurum DC, Basumallick L, Rao S, Pohl C, Rohrer JS, Kandzia S. Evaluation of desialylation during 2-amino benzamide labeling of asparagine-linked oligosaccharides. Anal Biochem 2014; 458:27-36. [DOI: 10.1016/j.ab.2014.03.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 03/11/2014] [Accepted: 03/13/2014] [Indexed: 12/20/2022]
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19
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Huffman JE, Pučić-Baković M, Klarić L, Hennig R, Selman MHJ, Vučković F, Novokmet M, Krištić J, Borowiak M, Muth T, Polašek O, Razdorov G, Gornik O, Plomp R, Theodoratou E, Wright AF, Rudan I, Hayward C, Campbell H, Deelder AM, Reichl U, Aulchenko YS, Rapp E, Wuhrer M, Lauc G. Comparative performance of four methods for high-throughput glycosylation analysis of immunoglobulin G in genetic and epidemiological research. Mol Cell Proteomics 2014; 13:1598-610. [PMID: 24719452 PMCID: PMC4047478 DOI: 10.1074/mcp.m113.037465] [Citation(s) in RCA: 131] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 03/14/2014] [Indexed: 11/06/2022] Open
Abstract
The biological and clinical relevance of glycosylation is becoming increasingly recognized, leading to a growing interest in large-scale clinical and population-based studies. In the past few years, several methods for high-throughput analysis of glycans have been developed, but thorough validation and standardization of these methods is required before significant resources are invested in large-scale studies. In this study, we compared liquid chromatography, capillary gel electrophoresis, and two MS methods for quantitative profiling of N-glycosylation of IgG in the same data set of 1201 individuals. To evaluate the accuracy of the four methods we then performed analysis of association with genetic polymorphisms and age. Chromatographic methods with either fluorescent or MS-detection yielded slightly stronger associations than MS-only and multiplexed capillary gel electrophoresis, but at the expense of lower levels of throughput. Advantages and disadvantages of each method were identified, which should inform the selection of the most appropriate method in future studies.
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Affiliation(s)
- Jennifer E Huffman
- From the ‡MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | | | | | - René Hennig
- ¶Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany; ‖glyXera GmbH, Magdeburg, Germany
| | - Maurice H J Selman
- **Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | | | | | | | | | - Thilo Muth
- ¶Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany; ‖glyXera GmbH, Magdeburg, Germany
| | - Ozren Polašek
- ‡‡Faculty of Medicine, University of Split, Split, Croatia
| | - Genadij Razdorov
- §§University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Olga Gornik
- §§University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Rosina Plomp
- **Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - Evropi Theodoratou
- ¶¶Centre for Population Health Sciences, School of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, UK
| | - Alan F Wright
- From the ‡MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Igor Rudan
- ¶¶Centre for Population Health Sciences, School of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, UK
| | - Caroline Hayward
- From the ‡MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Harry Campbell
- ¶¶Centre for Population Health Sciences, School of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh, UK
| | - André M Deelder
- **Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - Udo Reichl
- ¶Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany; ‖‖Otto-von-Guericke University, Chair of Bioprocess Engineering, Magdeburg, Germany
| | - Yurii S Aulchenko
- Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia; "Yurii Aulchenko" consulting, Groningen, The Netherlands
| | - Erdmann Rapp
- ¶Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany; ‖glyXera GmbH, Magdeburg, Germany
| | - Manfred Wuhrer
- **Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands; Division of BioAnalytical Chemistry, VU University Amsterdam, Amsterdam, The Netherlands
| | - Gordan Lauc
- §Genos Glycoscience Laboratory, Zagreb, Croatia; §§University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia;
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20
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Hua S, Hu CY, Kim BJ, Totten SM, Oh MJ, Yun N, Nwosu CC, Yoo JS, Lebrilla CB, An HJ. Glyco-Analytical Multispecific Proteolysis (Glyco-AMP): A Simple Method for Detailed and Quantitative Glycoproteomic Characterization. J Proteome Res 2013; 12:4414-23. [DOI: 10.1021/pr400442y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Serenus Hua
- Asia Glycomics Reference Site, Daejeon 305-764, South Korea
- Cancer
Research Institute, Chungnam National University, Daejeon 305-764, South Korea
| | - Chloe Y. Hu
- Department
of Chemistry, University of California—Davis, Davis, California 95616, United States
| | - Bum Jin Kim
- Graduate
School of Analytical Science and Technology, Chungnam National University, Daejeon 305-764, South Korea
| | - Sarah M. Totten
- Department
of Chemistry, University of California—Davis, Davis, California 95616, United States
| | - Myung Jin Oh
- Asia Glycomics Reference Site, Daejeon 305-764, South Korea
- Graduate
School of Analytical Science and Technology, Chungnam National University, Daejeon 305-764, South Korea
| | - Nayoung Yun
- Graduate
School of Analytical Science and Technology, Chungnam National University, Daejeon 305-764, South Korea
| | - Charles C. Nwosu
- Department
of Chemistry, University of California—Davis, Davis, California 95616, United States
| | - Jong Shin Yoo
- Graduate
School of Analytical Science and Technology, Chungnam National University, Daejeon 305-764, South Korea
- Division
of Mass Spectrometry Research, Korea Basic Science Institute, Ochang 363-883, South Korea
| | - Carlito B. Lebrilla
- Department
of Chemistry, University of California—Davis, Davis, California 95616, United States
| | - Hyun Joo An
- Asia Glycomics Reference Site, Daejeon 305-764, South Korea
- Cancer
Research Institute, Chungnam National University, Daejeon 305-764, South Korea
- Graduate
School of Analytical Science and Technology, Chungnam National University, Daejeon 305-764, South Korea
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21
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Hong Q, Lebrilla CB, Miyamoto S, Ruhaak LR. Absolute quantitation of immunoglobulin G and its glycoforms using multiple reaction monitoring. Anal Chem 2013; 85:8585-93. [PMID: 23944609 DOI: 10.1021/ac4009995] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Studies aimed toward glycan biomarker discovery have focused on glycan characterization by the global profiling of released glycans. Site-specific glycosylation analysis is less developed but may provide new types of biomarkers with higher sensitivity and specificity. Quantitation of peptide-conjugated glycans directly facilitates the differential analysis of distinct glycoforms associated with specific proteins at distinct sites. We have developed a method using MRM to monitor protein glycosylation normalized to absolute protein concentrations to examine quantitative changes in glycosylation at a site-specific level. This new approach provides information regarding both the absolute amount of protein and the site-specific glycosylation profile and will thus be useful to determine if altered glycosylation profiles in serum/plasma are due to a change in protein glycosylation or a change in protein concentration. The remarkable sensitivity and selectivity of MRM enable the detection of low abundance IgG glycopeptides, even when IgG was digested directly in serum with no cleanup prior to the liquid chromatography. Our results show a low limit of detection of 60 amol and a wide dynamic range of 3 orders magnitude for IgG protein quantitation. The results show that IgG glycopeptides can be analyzed directly from serum (without enrichment) and yield more accurate abundances when normalized to the protein content. This report represents the most comprehensive study so far of the use of multiple reaction monitoring for the quantitation of glycoproteins and their glycosylation patterns in biofluids.
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Affiliation(s)
- Qiuting Hong
- Department of Chemistry, University of California , One Shields Avenue, Davis, California, 95616, United States
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22
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Mun JY, Lee KJ, Seo H, Sung MS, Cho YS, Lee SG, Kwon O, Oh DB. Efficient Adhesion-Based Plasma Membrane Isolation for Cell Surface N-Glycan Analysis. Anal Chem 2013; 85:7462-70. [DOI: 10.1021/ac401431u] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Min-Sun Sung
- Biosystems and
Bioengineering
Program, University of Science and Technology (UST), Daejeon 305-350, South Korea
| | | | - Seung-Goo Lee
- Biosystems and
Bioengineering
Program, University of Science and Technology (UST), Daejeon 305-350, South Korea
| | - Ohsuk Kwon
- Biosystems and
Bioengineering
Program, University of Science and Technology (UST), Daejeon 305-350, South Korea
| | - Doo-Byoung Oh
- Biosystems and
Bioengineering
Program, University of Science and Technology (UST), Daejeon 305-350, South Korea
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23
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Unverzagt C, Kajihara Y. Chemical assembly of N-glycoproteins: a refined toolbox to address a ubiquitous posttranslational modification. Chem Soc Rev 2013; 42:4408-20. [PMID: 23403448 DOI: 10.1039/c3cs35485g] [Citation(s) in RCA: 172] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Incremental developments in the chemistry of peptides, proteins and carbohydrates have enabled researchers to assemble entire glycoproteins with high precision. Based on sophisticated ligation chemistries pure glycoproteins bearing a single glycosylation pattern have become available. The impact of N-glycosylation on the function of glycoproteins is generally recognized but not well understood. Based on the recent advances in the synthesis of glycoproteins by chemical methods researchers can finally start to elucidate the various roles of carbohydrates in complex biomolecules in detail.
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Affiliation(s)
- Carlo Unverzagt
- Bioorganische Chemie, Gebäude NWI, Universität Bayreuth, 95440 Bayreuth, Germany.
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24
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Shetty V, Hafner J, Shah P, Nickens Z, Philip R. Investigation of ovarian cancer associated sialylation changes in N-linked glycopeptides by quantitative proteomics. Clin Proteomics 2012; 9:10. [PMID: 22856521 PMCID: PMC3488482 DOI: 10.1186/1559-0275-9-10] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Accepted: 06/26/2012] [Indexed: 11/29/2022] Open
Abstract
Background In approximately 80% of patients, ovarian cancer is diagnosed when the patient is already in the advanced stages of the disease. CA125 is currently used as the marker for ovarian cancer; however, it lacks specificity and sensitivity for detecting early stage disease. There is a critical unmet need for sensitive and specific routine screening tests for early diagnosis that can reduce ovarian cancer lethality by reliably detecting the disease at its earliest and treatable stages. Results In this study, we investigated the N-linked sialylated glycopeptides in serum samples from healthy and ovarian cancer patients using Lectin-directed Tandem Labeling (LTL) and iTRAQ quantitative proteomics methods. We identified 45 N-linked sialylated glycopeptides containing 46 glycosylation sites. Among those, ten sialylated glycopeptides were significantly up-regulated in ovarian cancer patients’ serum samples. LC-MS/MS analysis of the non-glycosylated peptides from the same samples, western blot data using lectin enriched glycoproteins of various ovarian cancer type samples, and PNGase F (+/−) treatment confirmed the sialylation changes in the ovarian cancer samples. Conclusion Herein, we demonstrated that several proteins are aberrantly sialylated in N-linked glycopeptides in ovarian cancer and detection of glycopeptides with abnormal sialylation changes may have the potential to serve as biomarkers for ovarian cancer.
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25
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van Leeuwen SS, Schoemaker RJW, Timmer CJAM, Kamerling JP, Dijkhuizen L. Use of Wisteria floribunda agglutinin affinity chromatography in the structural analysis of the bovine lactoferrin N-linked glycosylation. Biochim Biophys Acta Gen Subj 2012; 1820:1444-55. [PMID: 22245701 DOI: 10.1016/j.bbagen.2011.12.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 12/21/2011] [Accepted: 12/22/2011] [Indexed: 12/29/2022]
Abstract
BACKGROUND Over the years, the N-glycosylation of both human and bovine lactoferrin (LF) has been studied extensively, however not all aspects have been studied in as much detail. Typically, the bovine LF complex-type N-glycans include certain epitopes, not found in human LF N-glycans, i.e. Gal(α1-3)Gal(β1-4)GlcNAc (αGal), GalNAc(β1-4)GlcNAc (LacdiNAc), and N-glycolylneuraminic acid (Neu5Gc). The combined presence of complex-type N-glycans, with αGal, LacdiNAc, LacNAc [Gal(β1-4)GlcNAc], Neu5Ac (N-acetylneuraminic acid), and Neu5Gc epitopes, and oligomannose-type N-glycans complicates the high-throughput analysis of such N-glycoprofiles highly. METHODS For the structural analysis of enzymatically released N-glycan pools, containing both LacNAc and LacdiNAc epitopes, a prefractionation protocol based on Wisteria floribunda agglutinin affinity chromatography was developed. The sub pools were analysed by MALDI-TOF-MS and HPLC-FD profiling, including sequential exoglycosidase treatments. RESULTS This protocol separates the N-glycan pool into three sub pools, with (1) free of LacdiNAc epitopes, (2) containing LacdiNAc epitopes, partially shielded by sialic acid, and (3) containing LacdiNAc epitopes, without shielding by sialic acid. Structural analysis by MALDI-TOF-MS and HPLC-FD showed a complex pattern of oligomannose-, hybrid-, and complex-type di-antennary structures, both with, and without LacdiNAc, αGal and sialic acid. CONCLUSIONS Applying the approach to bovine LF has led to a more detailed N-glycome pattern, including LacdiNAc, αGal, and Neu5Gc epitopes, than was shown in previous studies. GENERAL SIGNIFICANCE Bovine milk proteins contain glycosylation patterns that are absent in human milk proteins; particularly, the LacdiNAc epitope is abundant. Analysis of bovine milk serum proteins is therefore excessively complicated. The presented sub fractionation protocol allows a thorough analysis of the full scope of bovine milk protein glycosylation. This article is part of a Special Issue entitled Glycoproteomics.
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Affiliation(s)
- Sander S van Leeuwen
- Department of Microbial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Nijenborgh 7, NL-9747 AG Groningen, The Netherlands
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26
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Glycan analysis of glycoprotein pharmaceuticals: Evaluation of analytical approaches to Z number determination in pharmaceutical erythropoietin products. Biologicals 2011; 39:396-403. [DOI: 10.1016/j.biologicals.2011.08.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Revised: 08/02/2011] [Accepted: 08/21/2011] [Indexed: 11/19/2022] Open
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27
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Pucić M, Knezević A, Vidic J, Adamczyk B, Novokmet M, Polasek O, Gornik O, Supraha-Goreta S, Wormald MR, Redzić I, Campbell H, Wright A, Hastie ND, Wilson JF, Rudan I, Wuhrer M, Rudd PM, Josić D, Lauc G. High throughput isolation and glycosylation analysis of IgG-variability and heritability of the IgG glycome in three isolated human populations. Mol Cell Proteomics 2011; 10:M111.010090. [PMID: 21653738 PMCID: PMC3205872 DOI: 10.1074/mcp.m111.010090] [Citation(s) in RCA: 390] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
All immunoglobulin G molecules carry N-glycans, which modulate their biological activity. Changes in N-glycosylation of IgG associate with various diseases and affect the activity of therapeutic antibodies and intravenous immunoglobulins. We have developed a novel 96-well protein G monolithic plate and used it to rapidly isolate IgG from plasma of 2298 individuals from three isolated human populations. N-glycans were released by PNGase F, labeled with 2-aminobenzamide and analyzed by hydrophilic interaction chromatography with fluorescence detection. The majority of the structural features of the IgG glycome were consistent with previous studies, but sialylation was somewhat higher than reported previously. Sialylation was particularly prominent in core fucosylated glycans containing two galactose residues and bisecting GlcNAc where median sialylation level was nearly 80%. Very high variability between individuals was observed, approximately three times higher than in the total plasma glycome. For example, neutral IgG glycans without core fucose varied between 1.3 and 19%, a difference that significantly affects the effector functions of natural antibodies, predisposing or protecting individuals from particular diseases. Heritability of IgG glycans was generally between 30 and 50%. The individual's age was associated with a significant decrease in galactose and increase of bisecting GlcNAc, whereas other functional elements of IgG glycosylation did not change much with age. Gender was not an important predictor for any IgG glycan. An important observation is that competition between glycosyltransferases, which occurs in vitro, did not appear to be relevant in vivo, indicating that the final glycan structures are not a simple result of competing enzymatic activities, but a carefully regulated outcome designed to meet the prevailing physiological needs.
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Affiliation(s)
- Maja Pucić
- Genos Ltd., Glycobiology Division, Planinska 1, 10000 Zagreb, Croatia
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Abstract
Biopharmaceuticals are complex products and to ensure their batch-to-batch consistency and continuing quality the use of a combination of complementary analytical tests is required. Regulatory guidelines indicate quality attributes of different product classes to be included in the specifications for product release. Whilst the continuing development of sophisticated physicochemical techniques make them increasingly powerful for defining product identity, integrity, purity and the consistency of the manufacturing process, the results generated are not easily related to the biological activity. Consequently, a bioassay is normally required in the quality control to determine the potency, that is, the quantitative measure of the product’s ability to cause a specific biological effect in a defined biological system. A wide, and rapidly increasing, range of bioassay systems exist, each type with particular advantages and disadvantages.
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Sánchez-Pomales G, Zangmeister RA. Recent Advances in Electrochemical Glycobiosensing. INTERNATIONAL JOURNAL OF ELECTROCHEMISTRY 2011. [DOI: 10.4061/2011/825790] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Biosensors based on electrochemical transduction mechanisms have recently made advances into the field of glycan analysis. These glyco-biosensors offer simple, rapid, sensitive, and economical approaches to the measurement need for rapid glycan analysis for biomarker detection, cancer and disease diagnostics, and bioprocess monitoring of therapeutic glycoproteins. Although the prevalent methods of glycan analysis (high-performance liquid chromatography, mass spectrometry, and nuclear magnetic resonance spectroscopy) provide detailed identification and structural analysis of glycan species, there are significantly few low-cost, rapid glycan assays available for diagnostic and screening applications. Here we review instances in which glyco-biosensors have been used for glycan analysis using a variety of electrochemical transduction mechanisms (e.g., amperometric, potentiometric, impedimetric, and voltammetric), selective binding agents (e.g., lectins and antibodies), and redox species (e.g., enzyme substrates, inorganic, and nanomaterial).
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Affiliation(s)
- Germarie Sánchez-Pomales
- Bioprocess Measurements Group, Biochemical Science Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899, USA
| | - Rebecca A. Zangmeister
- Bioprocess Measurements Group, Biochemical Science Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899, USA
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Shetty V, Nickens Z, Shah P, Sinnathamby G, Semmes OJ, Philip R. Investigation of sialylation aberration in N-linked glycopeptides by lectin and tandem labeling (LTL) quantitative proteomics. Anal Chem 2010; 82:9201-10. [PMID: 20923142 DOI: 10.1021/ac101486d] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The accuracy in quantitative analysis of N-linked glycopeptides and glycosylation site mapping in cancer is critical to the fundamental question of whether the aberration is due to changes in the total concentration of glycoproteins or variations in the type of glycosylation of proteins. Toward this goal, we developed a lectin-directed tandem labeling (LTL) quantitative proteomics strategy in which we enriched sialylated glycopeptides by SNA, labeled them at the N-terminus by acetic anhydride ((1)H(6)/(2)D(6)) reagents, enzymatically deglycosylated the differentially labeled peptides in the presence of heavy water (H(2)(18)O), and performed LC/MS/MS analysis to identify glycopeptides. We successfully used fetuin as a model protein to test the feasibility of this LTL strategy not only to find true positive glycosylation sites but also to obtain accurate quantitative results on the glycosylation changes. Further, we implemented this method to investigate the sialylation changes in prostate cancer serum samples as compared to healthy controls. Herein, we report a total of 45 sialylated glycopeptides and an increase of sialylation in most of the glycoproteins identified in prostate cancer serum samples. Further quantitation of nonglycosylated peptides revealed that sialylation is increased in most of the glycoproteins, whereas the protein concentrations remain unchanged. Thus, LTL quantitative technique is potentially an useful method for obtaining simultaneous unambiguous identification and reliable quantification of N-linked glycopeptides.
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Affiliation(s)
- Vivekananda Shetty
- Immunotope, Inc., 3805 Old Easton Road, Doylestown, Pennsylvania 18902, USA.
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Säwén E, Massad T, Landersjö C, Damberg P, Widmalm G. Population distribution of flexible molecules from maximum entropy analysis using different priors as background information: application to the Φ, Ψ-conformational space of the α-(1-->2)-linked mannose disaccharide present in N- and O-linked glycoproteins. Org Biomol Chem 2010; 8:3684-95. [PMID: 20574564 DOI: 10.1039/c003958f] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conformational space available to the flexible molecule α-D-Manp-(1-->2)-α-D-Manp-OMe, a model for the α-(1-->2)-linked mannose disaccharide in N- or O-linked glycoproteins, is determined using experimental data and molecular simulation combined with a maximum entropy approach that leads to a converged population distribution utilizing different input information. A database survey of the Protein Data Bank where structures having the constituent disaccharide were retrieved resulted in an ensemble with >200 structures. Subsequent filtering removed erroneous structures and gave the database (DB) ensemble having three classes of mannose-containing compounds, viz., N- and O-linked structures, and ligands to proteins. A molecular dynamics (MD) simulation of the disaccharide revealed a two-state equilibrium with a major and a minor conformational state, i.e., the MD ensemble. These two different conformation ensembles of the disaccharide were compared to measured experimental spectroscopic data for the molecule in water solution. However, neither of the two populations were compatible with experimental data from optical rotation, NMR (1)H,(1)H cross-relaxation rates as well as homo- and heteronuclear (3)J couplings. The conformational distributions were subsequently used as background information to generate priors that were used in a maximum entropy analysis. The resulting posteriors, i.e., the population distributions after the application of the maximum entropy analysis, still showed notable deviations that were not anticipated based on the prior information. Therefore, reparameterization of homo- and heteronuclear Karplus relationships for the glycosidic torsion angles Φ and Ψ were carried out in which the importance of electronegative substituents on the coupling pathway was deemed essential resulting in four derived equations, two (3)J(COCC) and two (3)J(COCH) being different for the Φ and Ψ torsions, respectively. These Karplus relationships are denoted JCX/SU09. Reapplication of the maximum entropy analysis gave excellent agreement between the MD- and DB-posteriors. The information entropies show that the current reparametrization of the Karplus relationships constitutes a significant improvement. The Φ(H) torsion angle of the disaccharide is governed by the exo-anomeric effect and for the dominating conformation Φ(H) = -40 degrees and Ψ(H) = 33 degrees. The minor conformational state has a negative Ψ(H) torsion angle; the relative populations of the major and the minor states are approximately 3 : 1. It is anticipated that application of the methodology will be useful to flexible molecules ranging from small organic molecules to large biomolecules.
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Affiliation(s)
- Elin Säwén
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91, Stockholm, Sweden
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Eller S, Raps C, Niemietz M, Unverzagt C. Convenient introduction of a bisecting GlcNAc residue into multiantennary N-glycans as the ultimate residue. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Li H, d’Anjou M. Pharmacological significance of glycosylation in therapeutic proteins. Curr Opin Biotechnol 2009; 20:678-84. [DOI: 10.1016/j.copbio.2009.10.009] [Citation(s) in RCA: 174] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Accepted: 10/14/2009] [Indexed: 11/30/2022]
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