Quantification of the α2–6 sialic acid linkage in branched N-glycan structures with capillary nanogel electrophoresis

L Bwanali, CL Crihfield, EO Newton, VR Zeger… - Analytical …, 2019 - ACS Publications
Sialylation and sialic acid linkage in N-glycans are markers of disease but are analytically
challenging to quantify. A capillary electrophoresis method is reported that integrates a …

Specific analysis of α-2, 3-sialylated N-glycan linkage isomers by microchip capillary electrophoresis–mass spectrometry

M Cheng, H Shu, Y Peng, X Feng, G Yan… - Analytical …, 2021 - ACS Publications
Sialylated N-glycan isomers with α-2, 3 and α-2, 6 linkages play crucial and distinctive roles
in diverse physiological and pathological processes. Changes of α-2, 3-linked sialic acids in …

Fast discrimination of sialylated N-glycan linkage isomers with one-step derivatization by microfluidic capillary electrophoresis–mass spectrometry

M Cheng, H Shu, M Yang, G Yan, L Zhang… - Analytical …, 2022 - ACS Publications
Linkage isomers (α-2, 3-or α-2, 6-linkage) of sialylated N-glycans are involved in the
emergence and progression of some diseases, so they are of great significance for …

N-Glycan Isomer Differentiation by Zero Flow Capillary Electrophoresis Coupled to Mass Spectrometry

S Wagt, N de Haan, W Wang, T Zhang… - Analytical …, 2022 - ACS Publications
Isomeric N-glycans often vastly differ in their biological activities, hence the need for
methods that allow resolving and structurally characterizing them in biological material …

Qualitative and quantitative characterization of sialylated N-glycans using three fluorophores, two columns, and two instrumentations

W Kim, J Kim, S You, J Do, Y Jang, D Kim, J Lee… - Analytical …, 2019 - Elsevier
Sialylation can influence the stability, half-life, and immunogenicity of glycoproteins, but
sialylated N-glycans are known to be difficult to analyze. Human alpha1-acid glycoprotein …

Capillary electrophoresis–mass spectrometry for direct structural identification of serum N-glycans

CM Snyder, X Zhou, JA Karty, BR Fonslow… - … of chromatography A, 2017 - Elsevier
Through direct coupling of capillary electrophoresis (CE) to mass spectrometry (MS) with a
sheathless interface, we have identified 77 potential N-glycan structures derived from …

Liquid chromatography-selected reaction monitoring (LC-SRM) approach for the separation and quantitation of sialylated N-glycans linkage isomers

S Tao, Y Huang, BE Boyes, R Orlando - Analytical chemistry, 2014 - ACS Publications
The study of N-linked glycans is among the most challenging bioanalytical tasks because of
their complexity and variety. The presence of glycoform families that differ only in branching …

Sialic Acid Derivatization of Fluorescently Labeled N-Glycans Allows Linkage Differentiation by Reversed-Phase Liquid Chromatography–Fluorescence Detection …

AB Moran, RA Gardner, M Wuhrer… - Analytical …, 2022 - ACS Publications
Sialic acids have diverse biological roles, ranging from promoting up to preventing protein
and cellular recognition in health and disease. The various functions of these …

Profiling the N-Glycan Composition of IgG with Lectins and Capillary Nanogel Electrophoresis

G Lu, LA Holland - Analytical chemistry, 2018 - ACS Publications
Glycosylated human IgG contains fucosylated biantennary N-glycans with different
modifications including N-acetylglucosamine, which bisects the mannose core. Although …

Structural characterization of serum N-glycans by methylamidation, fluorescent labeling, and analysis by microchip electrophoresis

I Mitra, CM Snyder, X Zhou, MI Campos… - Analytical …, 2016 - ACS Publications
To characterize the structures of N-glycans derived from human serum, we report a strategy
that combines microchip electrophoresis, standard addition, enzymatic digestion, and matrix …