Sensitive enzyme-immunostaining and densitometric determination on thin-layer chromatography of N-glycolylneuraminic acid-containing glycosphingolipids, Hanganutziu-Deicher antigens
- PMID: 6378900
- DOI: 10.1093/oxfordjournals.jbchem.a134760
Sensitive enzyme-immunostaining and densitometric determination on thin-layer chromatography of N-glycolylneuraminic acid-containing glycosphingolipids, Hanganutziu-Deicher antigens
Abstract
A sensitive enzyme-immunochemical staining method was developed for detection of N-glycolylneuraminic acid (NeuGc)-containing glycosphingolipids (GSLs) on silica gel thin-layer chromatography. The procedure consists of immune reaction among NeuGc-containing GSLs, affinity-purified chicken anti-NeuGc-LacCer and horseradish peroxidase-conjugated rabbit anti-chicken IgG, and the peroxidase reaction using 4-chloro-1-naphthol as a chromogenic substrate. Quantitative determination was achieved by direct densitometric scanning of the enzyme-immunostained spots on the chromatogram. As little as 0.5 pmol of NeuGc-LacCer, NeuGc-nLcOse4Cer, and NeuGc-nLcOse6Cer (0.64-1.0 ng) could be detected with a good signal-to-noise ratio. A semi-linear detector response was observed up to 50 pmol of each GSL. This procedure can be applied easily to other glycolipid antigen systems.
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