Cited by 40Glycosylation and Glycoproteins ResearchMass Spectrometry Techniques and ApplicationsMicrofluidic and Capillary Electrophoresis Applications

Quantitative twoplex glycan analysis using 12C6 and 13C6 stable isotope 2-aminobenzoic acid labelling and capillary electrophoresis mass spectrometry

Váradi, Csaba, Mittermayr, Stefan, Millán-Martín, Silvia, Bones, Jonathan·2016·Analytical and Bioanalytical Chemistry

Abstract

Capillary electrophoresis (CE) offers excellent efficiency and orthogonality to liquid chromatographic (LC) separations for oligosaccharide structural analysis. Combination of CE with high resolution mass spectrometry (MS) for glycan analysis remains a challenging task due to the MS incompatibility of background electrolyte buffers and additives commonly used in offline CE separations. Here, a novel method is presented for the analysis of 2-aminobenzoic acid (2-AA) labelled glycans by capillary electrophoresis coupled to mass spectrometry (CE-MS). To ensure maximum resolution and excellent precision without the requirement for excessive analysis times, CE separation conditions including the concentration and pH of the background electrolyte, the effect of applied pressure on the capillary inlet and the capillary length were evaluated. Using readily available 12/13 C 6 stable isotopologues of 2-AA, the developed method can be applied for quantitative glycan profiling in a twoplex manner based on the generation of extracted ion electropherograms (EIE) for 12 C 6 'light' and 13 C 6 'heavy' 2-AA labelled glycan isotope clusters. The twoplex quantitative CE-MS glycan analysis platform is ideally suited for comparability assessment of biopharmaceuticals, such as monoclonal antibodies, for differential glycomic analysis of clinical material for potential biomarker discovery or for quantitative microheterogeneity analysis of different glycosylation sites within a glycoprotein. Additionally, due to the low injection volume requirements of CE, subsequent LC-MS analysis of the same sample can be performed facilitating the use of orthogonal separation techniques for structural elucidation or verification of quantitative performance.

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Crossref · 10.1007/s00216-016-9935-8

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Authors
Váradi, C., Mittermayr, S., Millán-Martín, S., & Bones, J.
Affiliations
National Institute for Bioprocessing Research and Training (IE)
Corresponding author
Bones, Jonathan
Venue
Analytical and Bioanalytical Chemistry
Published
2016-09-23
Volume
408
Issue
30
Pages
8691-8700
ISSN
  • 1618-2642 (ISSN-L)
  • 1618-2650
OpenAlex
W2522571264
Cited by
40
References
37
Citations by year
2026: 1 · 2023: 3 · 2022: 8 · 2021: 8 · 2020: 3 · 2019: 7 · 2018: 6 · 2017: 4
FWCI
2.94
Type
journal article
Language
en
Open access
closed
Locations
  • Analytical and Bioanalytical Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
Seventh Framework Programme (FP7-PEOPLE-2013-ITN-608381)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glycosylation and Glycoproteins Research
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
  • Physical Sciences › Engineering › Biomedical Engineering › Microfluidic and Capillary Electrophoresis Applications
Keywords
glycan analysis, stable isotope labeling, capillary electrophoresis-mass spectrometry, oligosaccharide structural analysis, monoclonal antibodies, biomarker discovery
MeSH terms
Antibodies, Monoclonal, Carbohydrate Sequence, Carbon Isotopes, Glycoproteins, Hydrogen-Ion Concentration, Isotope Labeling, Oligosaccharides, Mass Spectrometry, Electrophoresis, Capillary, ortho-Aminobenzoates

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