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Synthesis of high-mannose oligosaccharides containing mannose-6-phosphate residues using regioselective glycosylation.


ABSTRACT: Molecular recognition of mannose-6-phosphate (M6P)-modified oligosaccharides by transmembrane M6P receptors is a key signaling event in lysosomal protein trafficking in vivo. Access to M6P-containing high-mannose N-glycans is essential to achieving a thorough understanding of the M6P ligand-receptor recognition process. Herein we report the application of a versatile and reliable chemical strategy to prepare asymmetric di-antennary M6P-tagged high-mannose oligosaccharides in >20% overall yield and in high purity (>98%). Regioselective chemical glycosylation coupled with effective phosphorylation and product purification protocols were applied to rapidly assemble these oligosaccharides. The development of this synthetic strategy simplifies the preparation of M6P-tagged high-mannose oligosaccharides, which will improve access to these compounds to study their structures and biological functions.

SUBMITTER: Meng B 

PROVIDER: S-EPMC6121786 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Synthesis of high-mannose oligosaccharides containing mannose-6-phosphate residues using regioselective glycosylation.

Meng Bo B   Wang Jun J   Wang Quanli Q   Serianni Anthony S AS   Pan Qingfeng Q  

Carbohydrate research 20180731


Molecular recognition of mannose-6-phosphate (M6P)-modified oligosaccharides by transmembrane M6P receptors is a key signaling event in lysosomal protein trafficking in vivo. Access to M6P-containing high-mannose N-glycans is essential to achieving a thorough understanding of the M6P ligand-receptor recognition process. Herein we report the application of a versatile and reliable chemical strategy to prepare asymmetric di-antennary M6P-tagged high-mannose oligosaccharides in >20% overall yield a  ...[more]

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