A New titania glyco-purification tip for the fast enrichment and efficient analysis of glycopeptides and glycans by MALDI-TOF-MS
Küçük Resim Yok
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Enrichment and/or purification of intact glycopeptides and derivatized glycans are essential for mass spectrometry-based glycoproteomics and glycomics because of analytical challenges observed in the analysis. Here, a titania-based material was synthesized using a facile sol-gel method for the efficient analysis of glycopeptides and glycans. The glycopeptide enrichment efficacy of the titania-based sol-gel material was evaluated by the enrichment of IgG N-glycopeptides from their proteolytic products. The selectivity and sensitivity (0.5 fmol mu L-1) of the titania-based sol-gel material was found to be quite high when compared with commercial TiO2. A pipette-tip application for rapid glycoproteomic and glycomic analysis was developed by packing titania-based material into the pipette tips. The released and derivatized N-glycans of human plasma, IgG and human transferrin were successfully purified by titania glyco-purification tips for the analysis by MALDI-MS. The enrichment performance of the titania glyco-purification tip was tested using human plasma digest as a real-world complex sample and, 112 N-glycopeptides from human plasma glycoproteins were detected by the analysis of enriched samples by nLC-QTOF-MS/MS. Finally, the structural characterization of the material was achieved in detail using various characterization approaches. (C) 2019 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Glycopeptide, Enrichment, Glycan, Purification, Glycoproteomics, Glycomics, Mass, Spectrometry
Kaynak
Journal of Pharmaceutical and Biomedical Analysis
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
174
