Application Notes:
This cerebroside product is a glycosphingolipid containing a glucose attached to a ceramide (glucocerebroside) acylated with
hydroxy and non-hydroxy fatty acids. It is a major constituent of skin lipids where it has an important role in lamellar body
formation and in maintaining the water permeability barrier. Glucocerebroside is very important due to its function as the
biosynthetic precursor of lactosylceramide and from there of most of the neutral oligoglycolipids and gangliosides.1
Glucocerebroside is the only glycosphingolipid that is found in plants, fungi, and animals and is one of the most abundant
glycosphingolipids in plants. Due to the relatively high melting point of cerebrosides (much greater than physiological body
temperature) they have a para-crystalline structure. Glucocerebrosides tend to be concentrated in the outer leaflet of the
plasma membrane in lipid rafts. It has been reported that glucocerebrosides are essential for the activity of tyrosinase (a key
enzyme in melanin biosynthesis), to elicit defense responses in plants, and to help the plasma membrane in plants to
withstand stresses brought about by cold and drought. In Gaucher’s disease glucocerebrosides accumulate in the spleen, liver,
lungs, bone marrow, and brain due to a deficiency of the enzyme glucocerebrosidase.2 This accumulation of glucocerebroside
has been associated with chemotherapy resistance. Glucocerebroside has been shown to be able to modulate membrane traffic
along the endocytic pathway.3
References:
1. D. Sillence et al. “Assay for the transbilayer distribution of glycolipids: selective oxidation of glucosylceramide to glucuronylceramide by TEMPO
nitroxyl radicals” Journal of Lipid Research, Vol. 41(8) pp. 1252-1260, 2000
2. C. Walden et al. “Accumulation of Glucosylceramide in Murine Testis, Caused by Inhibition of -Glucosidase 2: IMPLICATIONS FOR
SPERMATOGENESIS” The Journal of Biological Chemistry, Vol. 282 pp. 32655-32664, 2007
3. D. Sillence et al. “Glucosylceramide modulates membrane traffic along the endocytic pathway” Journal of Lipid Research, Vol. 43(11) pp. 1837-1845,
2002