PMID- 7929454 OWN - NLM STAT- MEDLINE DCOM- 19941123 LR - 20210212 IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 269 IP - 43 DP - 1994 Oct 28 TI - N-butyldeoxygalactonojirimycin inhibits glycolipid biosynthesis but does not affect N-linked oligosaccharide processing. PG - 27108-14 AB - We have previously reported that the imino sugar N-butyldeoxynojirimycin (NB-DNJ) inhibits glycolipid biosynthesis, in addition to its known activity as an inhibitor of the N-linked oligosaccharide processing enzyme alpha-glucosidase I. In an attempt to dissociate these two activities and identify an inhibitor which was more selective for the glycolipid biosynthetic pathway, several imino sugars have been N-alkylated and tested for inhibitory activity. The galactose analogue N-butyldeoxygalactonojirimycin (NB-DGJ) was found to be a potent inhibitor of glycolipid biosynthesis but in contrast to NB-DNJ had no effect on the maturation of N-linked oligosaccharides or on lysosomal glucocerebrosidase. The effect of increasing N-alkyl chain length on glycolipid inhibition was investigated. Nonalkylated DGJ, the N-methyl and N-ethyl derivatives, were noninhibitory. However, N-propylation resulted in partial inhibition while the N-butyl and N-hexyl derivatives resulted in maximal inhibition. Increasing alkyl chain length also resulted in increased potency of glucosyltransferase inhibition. In an in vitro Gaucher's disease model NB-DGJ was as effective as NB-DNJ in preventing glycolipid storage and may represent a more selective potential therapeutic agent than NB-DNJ for the management of this and other glycosphingolipidoses. FAU - Platt, F M AU - Platt FM AD - Department of Biochemistry, University of Oxford, United Kingdom. FAU - Neises, G R AU - Neises GR FAU - Karlsson, G B AU - Karlsson GB FAU - Dwek, R A AU - Dwek RA FAU - Butters, T D AU - Butters TD LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Glycolipids) RN - 0 (Oligosaccharides) RN - 19130-96-2 (1-Deoxynojirimycin) RN - ADN3S497AZ (miglustat) RN - C4XNY919FW (migalastat) RN - EC 2.4.1.- (Glucosyltransferases) RN - EC 2.4.1.80 (ceramide glucosyltransferase) RN - EC 3.2.1.20 (alpha-Glucosidases) RN - EC 3.2.1.45 (Glucosylceramidase) SB - IM MH - 1-Deoxynojirimycin/*analogs & derivatives/pharmacology MH - Animals MH - Cells, Cultured MH - Disease Models, Animal MH - Gaucher Disease/metabolism MH - Glucosylceramidase/drug effects MH - Glucosyltransferases/antagonists & inhibitors MH - Glycolipids/*biosynthesis MH - Humans MH - Mice MH - Oligosaccharides/*biosynthesis MH - Structure-Activity Relationship MH - alpha-Glucosidases/drug effects EDAT- 1994/10/28 00:00 MHDA- 1994/10/28 00:01 CRDT- 1994/10/28 00:00 PHST- 1994/10/28 00:00 [pubmed] PHST- 1994/10/28 00:01 [medline] PHST- 1994/10/28 00:00 [entrez] AID - S0021-9258(18)47132-3 [pii] PST - ppublish SO - J Biol Chem. 1994 Oct 28;269(43):27108-14.