ECB-ART-40692
Chem Pharm Bull (Tokyo)
2008 May 01;565:734-7. doi: 10.1248/cpb.56.734.
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Isolation and structure of a monomethylated ganglioside possessing neuritogenic activity from the ovary of the sea urchin Diadema setosum.
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A new monomethylated ganglioside, DSG-A (3), was obtained, together with four known gangliosides, compounds (1, 2, 4, 5), from the lipid fraction of the chloroform/methanol extract of the ovary of the sea urchin Diadema setosum. The structures of the new ganglioside was determined on the basis of chemical and spectroscopic evidence to be 1-O-[9-O-methyl-(N-acetyl-alpha-D-neuraminosyl)-(2-->6)-beta-D-glucopyranosyl]-ceramide (3). The ceramide moiety of 3 was composed of C18-phytosphingosine base, and 2-hydroxy and nonhydroxylated fatty acid units. These gangliosides showed neuritogenic activity toward the rat pheochromocytoma cell line PC-12 in the presence of nerve growth factor, in which compound 3 showed the most potent activity.
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Genes referenced: LOC100887844 LOC115919910