1
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Wang Q, Wang T, Wu WW, Lin CY, Yang S, Yang G, Jankowska E, Hu Y, Shen RF, Betenbaugh MJ, Cipollo JF. Comprehensive N- and O-Glycoproteomic Analysis of Multiple Chinese Hamster Ovary Host Cell Lines. J Proteome Res 2022; 21:2341-2355. [PMID: 36129246 DOI: 10.1021/acs.jproteome.2c00207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Glycoproteomic analysis of three Chinese hamster ovary (CHO) suspension host cell lines (CHO-K1, CHO-S, and CHO-Pro5) commonly utilized in biopharmaceutical settings for recombinant protein production is reported. Intracellular and secreted glycoproteins were examined. We utilized an immobilization and chemoenzymatic strategy in our analysis. Glycoproteins or glycopeptides were first immobilized through reductive amination, and the sialyl moieties were amidated for protection. The desired N- or O-glycans and glycopeptides were released from the immobilization resin by enzymatic or chemical digestion. Glycopeptides were studied by Orbitrap Liquid chromatography-mass spectrometry (LC/MS), and the released glycans were analyzed by Matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF). Differences were detected in the relative abundances of N- and O-glycopeptide types, their resident and released glycans, and their glycoprotein complexity. Ontogeny analysis revealed key differences in features, such as general metabolic and biosynthetic pathways, including glycosylation systems, as well as distributions in cellular compartments. Host cell lines and subfraction differences were observed in both N- and O-glycan and glycoprotein pools. Differences were observed in sialyl and fucosyl glycan distributions. Key differences were also observed among glycoproteins that are problematic contaminants in recombinant antibody production. The differences revealed in this study should inform the choice of cell lines best suited for a particular bioproduction application.
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Affiliation(s)
- Qiong Wang
- Laboratory of Bacterial Polysaccharides, Division of Bacterial, Parasitic and Allergenic Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland 20993, United States.,Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21210, United States
| | - Tiexin Wang
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21210, United States
| | - Wells W Wu
- Facility for Biotechnology Resources, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Chang-Yi Lin
- Facility for Biotechnology Resources, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Shuang Yang
- Laboratory of Bacterial Polysaccharides, Division of Bacterial, Parasitic and Allergenic Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland 20993, United States.,Center for Clinical Mass Spectrometry, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215123, China
| | - Ganglong Yang
- Department of Pathology, Johns Hopkins University, Baltimore, Maryland 21287, United States.,Key Laboratory of Carbohydrate Chemistry and Biotechnology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Ewa Jankowska
- Laboratory of Bacterial Polysaccharides, Division of Bacterial, Parasitic and Allergenic Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Yifeng Hu
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21210, United States
| | - Rong-Fong Shen
- Facility for Biotechnology Resources, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland 20993, United States
| | - Michael J Betenbaugh
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21210, United States
| | - John F Cipollo
- Laboratory of Bacterial Polysaccharides, Division of Bacterial, Parasitic and Allergenic Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland 20993, United States
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2
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Novakovic M, Battistel MD, Azurmendi HF, Concilio MG, Freedberg DI, Frydman L. The Incorporation of Labile Protons into Multidimensional NMR Analyses: Glycan Structures Revisited. J Am Chem Soc 2021; 143:8935-8948. [PMID: 34085814 PMCID: PMC8297728 DOI: 10.1021/jacs.1c04512] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Glycan structures
are often stabilized by a repertoire of hydrogen-bonded
donor/acceptor groups, revealing longer-lived structures that could
represent biologically relevant conformations. NMR provides unique
data on these hydrogen-bonded networks from multidimensional experiments
detecting cross-peaks resulting from through-bond (TOCSY) or through-space
(NOESY) interactions. However, fast OH/H2O exchange, and
the spectral proximity among these NMR resonances, hamper the use
of glycans’ labile protons in such analyses; consequently,
studies are often restricted to aprotic solvents or supercooled aqueous
solutions. These nonphysiological conditions may lead to unrepresentative
structures or to probing a small subset of accessible conformations
that may miss “active” glycan conformations. Looped,
projected spectroscopy (L-PROSY) has been recently shown to substantially
enhance protein NOESY and TOCSY cross-peaks, for 1Hs that
undergo fast exchange with water. This study shows that even larger
enhancements can be obtained for rapidly exchanging OHs in saccharides,
leading to the retrieval of previously undetectable 2D TOCSY/NOESY
cross-peaks with nonlabile protons. After demonstrating ≥300%
signal enhancements on model monosaccharides, these experiments were
applied at 1 GHz to elucidate the structural network adopted by a
sialic acid homotetramer, used as a model for α,2–8 linked
polysaccharides. High-field L-PROSY NMR enabled these studies at higher
temperatures and provided insight previously unavailable from lower-field
NMR investigations on supercooled samples, involving mostly nonlabile
nuclei. Using L-PROSY’s NOEs and other restraints, a revised
structural model for the homotetramer was obtained combining rigid
motifs and flexible segments, that is well represented by conformations
derived from 40 μs molecular dynamics simulations.
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Affiliation(s)
- Mihajlo Novakovic
- Department of Chemical and Biological Physics, Weizmann Institute of Science, 76100 Rehovot, Israel
| | - Marcos D Battistel
- Laboratory of Bacterial Polysaccharides, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993, United States
| | - Hugo F Azurmendi
- Laboratory of Bacterial Polysaccharides, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993, United States
| | - Maria-Grazia Concilio
- Department of Chemical and Biological Physics, Weizmann Institute of Science, 76100 Rehovot, Israel
| | - Darón I Freedberg
- Laboratory of Bacterial Polysaccharides, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, Maryland 20993, United States
| | - Lucio Frydman
- Department of Chemical and Biological Physics, Weizmann Institute of Science, 76100 Rehovot, Israel
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3
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Serum N-glycan profiles differ for various breast cancer subtypes. Glycoconj J 2021; 38:387-395. [PMID: 33877489 PMCID: PMC8116229 DOI: 10.1007/s10719-021-10001-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 03/15/2021] [Accepted: 04/12/2021] [Indexed: 12/09/2022]
Abstract
Breast cancer is the most prevalent cancer in women. Early detection of this disease improves survival and therefore population screenings, based on mammography, are performed. However, the sensitivity of this screening modality is not optimal and new screening methods, such as blood tests, are being explored. Most of the analyses that aim for early detection focus on proteins in the bloodstream. In this study, the biomarker potential of total serum N-glycosylation analysis was explored with regard to detection of breast cancer. In an age-matched case-control setup serum protein N-glycan profiles from 145 breast cancer patients were compared to those from 171 healthy individuals. N-glycans were enzymatically released, chemically derivatized to preserve linkage-specificity of sialic acids and characterized by high resolution mass spectrometry. Logistic regression analysis was used to evaluate associations of specific N-glycan structures as well as N-glycosylation traits with breast cancer. In a case-control comparison three associations were found, namely a lower level of a two triantennary glycans and a higher level of one tetraantennary glycan in cancer patients. Of note, various other N-glycomic signatures that had previously been reported were not replicated in the current cohort. It was further evaluated whether the lack of replication of breast cancer N-glycomic signatures could be partly explained by the heterogenous character of the disease since the studies performed so far were based on cohorts that included diverging subtypes in different numbers. It was found that serum N-glycan profiles differed for the various cancer subtypes that were analyzed in this study.
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Abstract
Glycosylation refers to the covalent attachment of sugar residues to a protein or lipid, and the biological importance of this modification has been widely recognized. While glycosylation in mammals is being extensively investigated, lower level animals such as invertebrates have not been adequately interrogated for their glycosylation. The rich diversity of invertebrate species, the increased database of sequenced invertebrate genomes and the time and cost efficiency of raising and experimenting on these species have enabled a handful of the species to become excellent model organisms, which have been successfully used as tools for probing various biologically interesting problems. Investigation on invertebrate glycosylation, especially on model organisms, not only expands the structural and functional knowledgebase, but also can facilitate deeper understanding on the biological functions of glycosylation in higher organisms. Here, we reviewed the research advances in invertebrate glycosylation, including N- and O-glycosylation, glycosphingolipids and glycosaminoglycans. The aspects of glycan biosynthesis, structures and functions are discussed, with a focus on the model organisms Drosophila and Caenorhabditis. Analytical strategies for the glycans and glycoconjugates are also summarized.
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Affiliation(s)
- Feifei Zhu
- 1 Institute of Life Sciences, Jiangsu University , Zhenjiang 212013 , People's Republic of China.,2 School of Food and Biological Engineering, Jiangsu University , Zhenjiang 212013 , People's Republic of China
| | - Dong Li
- 1 Institute of Life Sciences, Jiangsu University , Zhenjiang 212013 , People's Republic of China
| | - Keping Chen
- 1 Institute of Life Sciences, Jiangsu University , Zhenjiang 212013 , People's Republic of China
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5
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de Haas P, Hendriks WJAJ, Lefeber DJ, Cambi A. Biological and Technical Challenges in Unraveling the Role of N-Glycans in Immune Receptor Regulation. Front Chem 2020; 8:55. [PMID: 32117881 PMCID: PMC7013033 DOI: 10.3389/fchem.2020.00055] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 01/17/2020] [Indexed: 12/15/2022] Open
Abstract
N-glycosylation of membrane receptors is important for a wide variety of cellular processes. In the immune system, loss or alteration of receptor glycosylation can affect pathogen recognition, cell-cell interaction, and activation as well as migration. This is not only due to aberrant folding of the receptor, but also to altered lateral mobility or aggregation capacity. Despite increasing evidence of their biological relevance, glycosylation-dependent mechanisms of receptor regulation are hard to dissect at the molecular level. This is due to the intrinsic complexity of the glycosylation process and high diversity of glycan structures combined with the technical limitations of the current experimental tools. It is still challenging to precisely determine the localization and site-occupancy of glycosylation sites, glycan micro- and macro-heterogeneity at the individual receptor level as well as the biological function and specific interactome of receptor glycoforms. In addition, the tools available to manipulate N-glycans of a specific receptor are limited. Significant progress has however been made thanks to innovative approaches such as glycoproteomics, metabolic engineering, or chemoenzymatic labeling. By discussing examples of immune receptors involved in pathogen recognition, migration, antigen presentation, and cell signaling, this Mini Review will focus on the biological importance of N-glycosylation for receptor functions and highlight the technical challenges for examination and manipulation of receptor N-glycans.
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Affiliation(s)
- Paola de Haas
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Netherlands
| | - Wiljan J A J Hendriks
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Netherlands
| | - Dirk J Lefeber
- Department of Laboratory Medicine, Translational Metabolic Laboratory, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Netherlands.,Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, Netherlands
| | - Alessandra Cambi
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Netherlands
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Ahl LI, Al-Husseini N, Al-Helle S, Staerk D, Grace OM, Willats WGT, Mravec J, Jørgensen B, Rønsted N. Detection of Seasonal Variation in Aloe Polysaccharides Using Carbohydrate Detecting Microarrays. FRONTIERS IN PLANT SCIENCE 2019; 10:512. [PMID: 31139197 PMCID: PMC6527838 DOI: 10.3389/fpls.2019.00512] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 04/03/2019] [Indexed: 05/13/2023]
Abstract
Aloe vera gel is a globally popular natural product used for the treatment of skin conditions. Its useful properties are attributed to the presence of bioactive polysaccharides. Nearly 25% of the 600 species in the genus Aloe are used locally in traditional medicine, indicating that the bioactive components in Aloe vera may be common across the genus Aloe. The complexity of the polysaccharides has hindered development of relevant assays for authentication of Aloe products. Carbohydrate detecting microarrays have recently been suggested as a method for profiling Aloe polysaccharide composition. The aim of this study was to use carbohydrate detecting microarrays to investigate the seasonal variation in the polysaccharide composition of two medicinal and two non-medicinal Aloe species over the course of a year. Microscopy was used to explore where in the cells the bioactive polysaccharides are present and predict their functional role in the cell wall structure. The carbohydrate detecting microarrays analyses showed distinctive differences in the polysaccharide composition between the different species and carbohydrate detecting microarrays therefore has potential as a complementary screening method directly targeting the presence and composition of relevant polysaccharides. The results also show changes in the polysaccharide composition over the year within the investigated species, which may be of importance for commercial growing in optimizing harvest times to obtain higher yield of relevant polysaccharides.
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Affiliation(s)
- Louise Isager Ahl
- Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
| | - Narjes Al-Husseini
- Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
| | - Sara Al-Helle
- Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
| | - Dan Staerk
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Olwen M. Grace
- Comparative Plant and Fungal Biology, Royal Botanic Gardens Kew, Richmond, United Kingdom
| | - William G. T. Willats
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Jozef Mravec
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Bodil Jørgensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Nina Rønsted
- Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
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7
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Yang S, Hu Y, Sokoll L, Zhang H. Simultaneous quantification of N- and O-glycans using a solid-phase method. Nat Protoc 2017; 12:1229-1244. [PMID: 28518173 PMCID: PMC5877797 DOI: 10.1038/nprot.2017.034] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Glycosylation has a pivotal role in a diverse range of biological activities, modulating the structure and function of proteins. Glycogens coupled to the nitrogen atom (N-linked) of asparagine side chains or to the oxygen atom (O-linked) of serine and threonine side chains represent the two major protein glycosylation forms. N-glycans can be released by glycosidases, whereas O-glycans are often cleaved by chemical reaction. However, it is challenging to combine these enzymatic and chemical reactions in order to analyze both N- and O-glycans. We recently developed a glycoprotei n immobilization for glycan extraction (GIG) method that allows for the simultaneous analysis of N- and O-glycans on a solid support. GIG enables quantitative analysis of N-glycans and O-glycans from a single specimen and can be applied to a high-throughput automated platform. Here we provide a step-by-step GIG protocol that includes procedures for (i) protein immobilization on an aldehyde-active solid support by reductive amination; (ii) stabilization of fragile sialic acids by carbodiimide coupling; (iii) release of N-glycans by PNGase F digestion; (iv) release of O-glycans by β-elimination using ammonia in the presence of 1-phenyl-3-methyl-5-pyrazolone (PMP) to prevent alditol peeling from O-glycans; (v) mass spectrometry (MS) analysis; and (vi) data analysis for identification of glycans using in-house developed software (GIG Tool; free to download via http://www.biomarkercenter.org/gigtool). The GIG tool extracts precursor masses, oxonium ions and glycan fragments from tandem (liquid chromatography (LC)-MS/MS) mass spectra for glycan identification, and reporter ions from quaternary amine containing isobaric tag for glycan (QUANTITY) isobaric tags are used for quantification of the relative abundance of N-glycans. The GIG protocol takes ∼3 d.
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Affiliation(s)
- Shuang Yang
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yingwei Hu
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Lori Sokoll
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Hui Zhang
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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8
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Affiliation(s)
- Stefan Gaunitz
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Gabe Nagy
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Nicola L. B. Pohl
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Milos V. Novotny
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
- Regional Center for Applied Molecular Oncology, Masaryk Memorial Oncological Institute, 656 53 Brno, Czech Republic
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