Direct analysis of sialylated or sulfated glycosphingolipids and other polar and neutral lipids using TLC-MS interfaces.

ABSTRACT: Gangliosides and sulfatides (STs) are acidic glycosphingolipids (GSLs) that have one or more sialic acids or sulfate substituents, in addition to neutral sugars, attached to the C-1 hydroxyl group of the ceramide long chain base. TLC is a widely employed and convenient technique for separation and characterization of GSLs. When TLC is directly coupled to MS, it provides both the molecular mass and structural information without further purification. Here, after development of the TLC plates, the structural analyses of acidic GSLs, including gangliosides and STs, were investigated using the liquid extraction surface analysis (LESA™) and CAMAG TLC-MS interfaces coupled to an ESI QSTAR Pulsar i quadrupole orthogonal TOF mass spectrometer. Coupling TLC with ESI-MS allowed the acquisition of hi

SUBMITTER: Park H 

PROVIDER: S-EPMC3966711 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature