2012
DOI: 10.1039/c2ay25663k
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Chemical derivatization with a polycyclic aromatic hydrocarbon for highly sensitive detection of N-linked glycans using MALDI-TOF MS

Abstract: Here we developed a facile method using the polycyclic aromatic hydrocarbon ethidium bromide (EB) for glycan derivatization, to enhance the ionization efficiency and detection sensitivity of glycans in mass spectrometry (MS). The cationic nature of EB also notably improved identification of neutral and acidic glycans of real samples, as well as their structural analysis.

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Cited by 12 publications
(4 citation statements)
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“…Mass spectrometry (MS) has been proven to be a powerful and effective tool to complete the glycan mapping work. 8,9 However, due to the low abundance and poor ionization efficiency of the available glycan, it is difficult to detect the glycan in complex samples by MS directly. Therefore, it is necessary to separate and purify glycans from complicated samples.…”
mentioning
confidence: 99%
“…Mass spectrometry (MS) has been proven to be a powerful and effective tool to complete the glycan mapping work. 8,9 However, due to the low abundance and poor ionization efficiency of the available glycan, it is difficult to detect the glycan in complex samples by MS directly. Therefore, it is necessary to separate and purify glycans from complicated samples.…”
mentioning
confidence: 99%
“…Schiff base formation with ethidium bromide has been used to produce a very sensitive detection system, demonstrated with maltoheptaose and N ‐linked glycans (Tong et al, ). The increase in sensitivity was about sixfold and threefold, respectively, when compared with the signals from 2‐AB‐ or permethylated‐derivatized maltohexaose.…”
Section: Derivativesmentioning
confidence: 99%
“…[5][6][7][8] Therefore, the global N-glycan proling of proteins is crucial not only in elucidating the functions of glycans in biological processes and disease development but also in discovering biomarkers for early diagnosis and therapeutic monitoring. [9][10][11][12] Due to its high sensitivity, accuracy and easy elucidation of spectra, matrix-assisted laser desorption/ionization time of ight mass spectrometry (MALDI-TOF MS) has been a major approach for global glycan identication. 13 The rapid progress in glycomics has resulted in an increasing demand for identication and characterization of N-glycans as efficiently and rapidly as possible.…”
Section: Introductionmentioning
confidence: 99%