Damicoside from Axinella damicornis: the influence of a glycosylated galactose 4-OH group on the immunostimulatory activity of alpha-galactoglycosphingolipids.

Abstract:

:Alpha-galactoglycosphingolipids (alpha-GalGSLs) are unique immunostimulatory glycosphingolipids from marine sponges. Analysis of the glycosphingolipid composition of the marine sponge Axinella damicornis revealed the presence of a new alpha-GalGSL, damicoside (3a), which is the first alpha-GalGSL with a glycosylated galactose 4-OH group. Structure elucidation of damicoside was performed using spectroscopic and chemical methods. When tested in a spleen cell proliferation assay, 3a exhibited a stimulatory activity comparable to that of agelasphin (2), showing that a free galactose 4-OH group is not essential for the immunostimulatory activity of alpha-GalGSLs and providing a further step toward the complete understanding of their structure-activity relationship.

journal_name

J Med Chem

authors

Costantino V,D'Esposito M,Fattorusso E,Mangoni A,Basilico N,Parapini S,Taramelli D

doi

10.1021/jm050506y

keywords:

subject

Has Abstract

pub_date

2005-11-17 00:00:00

pages

7411-7

issue

23

eissn

0022-2623

issn

1520-4804

journal_volume

48

pub_type

杂志文章