An On-Line Platform for the Analysis of Permethylated Oligosaccharides Using Capillary Liquid Chromatography-Electrospray Ionization-Tandem Mass Spectrometry
- Authors
- Jang, Kyoung-Soon; Park, Hae-Min; Kim, Yun-Gon; Kim, Byung-Gee; Kim, June-Hyung
- Issue Date
- May-2015
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Oligosaccharide; On-Line; Permethylation; Capillary Electrospray Ionization-Tandem Mass Spectrometry; Sodium Hydroxide
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.15, no.5, pp.3962 - 3966
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 15
- Number
- 5
- Start Page
- 3962
- End Page
- 3966
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/8738
- DOI
- 10.1166/jnn.2015.9534
- ISSN
- 1533-4880
- Abstract
- Permethylation is one of the most practical modifications for mass spectrometric analysis of carbohydrates. In this study, we showed a facile platform for the on-line permethylation and analysis of acidic N-glycans using capillary liquid chromatography-electrospray ionization-tandem mass spectrometry to elucidate the N-glycan structures derived from glycoprotein samples. Two capillaries, individually packed with NaOH and C-18 powder, were coupled to electrospray ion trap mass spectrometer. Prior to mass spectrometry, oligosaccharides were permethylated in NaOH-packed capillary by methyl iodide, and the permethylated glycans were consequently extracted from residual reagents, such as NaOH and methyl iodide, in C-18-capillary, instead of using conventional chloroform extraction. After permethylation and purification, the permethylated glycans were released from C-18 capillary by acetonitrile, and sprayed into mass spectrometer. Using this on-line strategy, a picomolar range of sialylated N-glycans from bovine fetuin were analyzed by tandem mass spectrometry.
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