Synthesis and human NKT cell stimulating properties of 3-O-sulfo-α/β-galactosylceramides
作者:Guo-Wen Xing、Douglass Wu、Michael A. Poles、Amir Horowitz、Moriya Tsuji、David D. Ho、Chi-Huey Wong
DOI:10.1016/j.bmc.2005.02.018
日期:2005.4
Two novel hybrid molecules 3-O-sulfo-alpha/beta-galactosylceramide 3 and 4, which are derived from an immunostimulatory agent alpha-GalCer 1 and self-glycolipid ligand sulfatide 2, were designed and synthesized. Compound 3 was shown to efficiently stimulate human NKT cells to secret IL-4 and IFN-gamma, with activities similar to 1, suggesting that modification of the 3"-OH position of the galactose moiety with sulfate has no significant effect on NKT cell stimulation. As a comparison, the beta-isomer 4 has no affinity to NKT cells, which demonstrates that the alpha-glycosidic bond of galactosylceramide is crucial to the NKT cells activation. (c) 2005 Elsevier Ltd. All rights reserved.