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dc.contributor.authorOuyang, Yilan
dc.contributor.authorHan, Xiaorui
dc.contributor.authorXia, Qiangwei
dc.contributor.authorChen, Jianle
dc.contributor.authorVelagapudi, Sheila
dc.contributor.authorXia, Ke
dc.contributor.authorZhang, Zhenqing
dc.contributor.authorLinhardt, Robert J.
dc.identifier.citationNegative-ion mode capillary isoelectric focusing-mass spectrometry for charge-based separation of acidic oligosaccharides, Y. Ouyang, X.Han, Q. Xia, J. Chen, S. Velagapudi, K. Xia, Z. Zhang, R. J Linhardt, Analytical Chemistry, 91, 846−853, 2019.
dc.descriptionAnalytical Chemistry, 91, 846−853
dc.descriptionNote : if this item contains full text it may be a preprint, author manuscript, or a Gold OA copy that permits redistribution with a license such as CC BY. The final version is available through the publisher’s platform.
dc.description.abstractGlycosaminoglycans (GAGs) are biologically and pharmacologically important linear, anionic polysaccharides containing various repeating disaccharides sequences. The analysis of these polysaccharides generally relies on their chemical or enzymatic breakdown to disaccharide units that are separated, by chromatography or electrophoresis, and detected, by UV, fluorescence, or mass spectrometry (MS). Isoelectric focusing (IEF) is an important analytical technique with high resolving power for the separation of analytes exhibiting differences in isoelectric points. One format of IEF, the capillary isoelectric focusing (cIEF), is an attractive approach in that it can be coupled with mass spectrometry (cIEF-MS) to provide online focusing and detection of complex mixtures. In the past three decades, numerous studies have applied cIEF-MS methods to the analysis of protein and peptide mixtures by positive-ion mode mass spectrometry. However, polysaccharide chemists largely rely on negative-ion mode mass spectrometry for the analysis of highly sulfated GAGs. The current study reports a negative-ion mode cIEF-MS method using an electrokinetically pumped sheath liquid nanospray capillary electrophoresis–mass spectrometry (CE-MS) coupling technology. The feasibility of this negative-ion cIEF-MS method and its potential applications are demonstrated using chondroitin sulfate and heparan sulfate oligosaccharides mixtures.
dc.description.sponsorshipNational Institutes of Health
dc.relation.ispartofThe Linhardt Research Labs Online Collection
dc.relation.ispartofRensselaer Polytechnic Institute, Troy, NY
dc.relation.ispartofAnalytical Chemistry
dc.subjectChemistry and chemical biology
dc.subjectChemical and biological engineering
dc.subjectBiomedical engineering
dc.titleNegative-ion mode capillary isoelectric focusing-mass spectrometry for charge-based separation of acidic oligosaccharides
dc.rights.holderIn Copyright : this Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
dc.relation.departmentThe Linhardt Research Labs.
dc.relation.departmentThe Shirley Ann Jackson, Ph.D. Center for Biotechnology and Interdisciplinary Studies (CBIS)

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