Journal
TALANTA
Volume 144, Issue -, Pages 992-997Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2015.07.045
Keywords
Glycan; Labelling reagent; Controllable synthesis; Liquid chromatography-electrospray mass spectrometry (LC-ESI-MS); Glycomics profiling
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Funding
- National Natural Science Foundation of China [21275009]
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Labelling strategy plays an important role in mass spectrometry (MS) based glycan analysis due to the high hydrophilicity and low ionization efficiency of glycans. Ten hydrazino-s-triazine based labelling reagents were synthesized under facile and controllable conditions for highly sensitive liquid chromatography-electrospray mass spectrometry glycan analysis in this work. Attached to N-glycans through non-reductive reactions, these new labelling reagents were evaluated in aspect of the differently enhanced glycan response to mass spectrometry. Three of the ten labelling reagents demonstrated to be reliable and remarkable for glycan analysis with satisfactory linearity and lowered limits of detection using maltoheptaose (DP7) as model. Furthermore, the most optimal labelling reagent was taken as an example for highly sensitive profiling of N-linked glycans both cleaved from chicken avidin and glycoproteins in human serum, indicating prospective availability for these labelling reagents in frontier of glycomics researches. (C) 2015 Elsevier B.V. All rights reserved.
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