Glycosphingolipid accumulation (GSL)

Glycosphingolipid accumulation is the pathological buildup of glycosphingolipids within cells, predominantly in lysosomes, due to defects in the enzymatic machinery that degrades these lipids. GSLs are vital membrane constituents involved in cell signaling, adhesion, and recognition. When their degradation is impaired—as in lysosomal storage disorders—GSLs build up inside organelles, disrupting cell and tissue function. This accumulation contributes to morbidity in neurological, cardiovascular, renal, and other systemic diseases. Therapeutic approaches focus on reducing GSL synthesis, enhancing degradation, or using affected GSL species or associated proteins as biomarkers for diagnosis and monitoring.

Other names

Glycosphingolipid storageGSL accumulationlysosomal glycosphingolipid overload

Substrate reduction: inhibition of GSL synthesis to prevent accumulation; Enzyme replacement: supplementation of defective lysosomal enzymes to restore GSL degradation