Abstract
Congenital disorders of glycosylation (CDG) are a growing group diseases that result from defects in genes involved in glycan biosynthesis pathways. One tetrasaccharide, i.e., Neu5Ac-α2, 6-Gal-β1, 4-GlcNAc-β1, 4-GlcNAc, was recently reported as the biomarker of ALG1-CDG, the disease caused by ALG1 deficiency. To develop a novel diagnostic method for ALG1-CDG, chemo-enzymatic synthesis of the tetrasaccharide biomarker linked to phytanyl phosphate and the biomarker’s immune stimulation were investigated in this study. The immunization study using liposomes bearing phytanyl-linked tetrasaccharide revealed that they stimulated a moderate immune response. The induced antibody showed strong binding specificity for the ALG1-CDG biomarker, indicating its potential in medical applications.
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