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Selective enrichment of glycopeptides from complex biological samples is essential for MS-based glycoproteomics, but challenges still remain. In this work, glucose-functionalized magnetic mesoporous nanoparticles (MMNs), which hold the attractive features of well-defined core/shell structure, high specific surface area (324 m(2)/g), narrow pore size distribution (2.2 nm) and high magnetic responsivity (69.1 emu g(-1)), were synthesized via click chemistry and applied to enrich glycopeptides and glycans. Taking advantages of the size-exclusive effect of mesopore against proteins and the hydrophilic interaction between glycans and glucose, the hydrophilic MMNs possessed high selectivity for glycopeptides at the digested mixtures of horseradish peroxidase (HRP), myoglobin and beta-casein at molar ratio of 1:1:10, large enrichment capacity (as high as 250 mg/g), high sensitivity (50 fmol), excellent speed (5 min for enrichment) and high recovery of glycopeptides (as high as 94.6%). Additionally, the MMNs exhibited excellent performance in enrichment of N-linked glycans from the digested human serum that are made up of peptides, large proteins and other compounds. These outstanding features will give the hydrophilic MMNs high benefit for MS analysis of low-abundance glycopeptides/glycans. (C) 2014 Elsevier B.V. All rights reserved.
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JOURNAL OF CHROMATOGRAPHY A
ISSN: 0021-9673
Year: 2014
Volume: 1358
Page: 29-38
4 . 1 6 9
JCR@2014
3 . 8 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
ESI HC Threshold:268
JCR Journal Grade:1
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 62
SCOPUS Cited Count: 62
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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