Relative quantitation of multi-antennary N-glycan classes: combining PGC-LC-ESI-MS with exoglycosidase digestion

Abstract

In the search for N-glycan disease biomarkers current glycoanalytical methods may not be revealing a complete picture of precious samples, and we may be missing valuable structural information that fall outside analysis windows. We report a targeted strategy combining PGC-LC-ESI-MS with exoglycosidases to improve the relative quantitation of tri and tetra-antennary glycan classes.