Glycosynthase-mediated synthesis of glycosphingolipids.
2006
Glycosphingolipids play crucial roles in virtually every stage of the cell cycle, and their clinical administration has been proposed as a treatment for Alzheimer's, Parkinson's, stroke, and a range of other conditions. However, lack of supply has severely hindered testing of this potential. A novel glycosynthase-based synthetic strategy is demonstrated, involving a mutant of an endoglycoceramidase in which the catalytic nucleophile has been ablated. This mutant efficiently couples a range of glycosyl fluoride donors with a range of sphingosine-based acceptors in yields around 95%. This technology opens the door to large-scale production of glycosphingolipids and, thus, to clinical testing.
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