title: Preparation and inhibitory activity on hyaluronidase of fully O-sulfated hyaluro-oligosaccharides.
abstract: Hyaluronan was partially depolymerized on a large-scale quantity using bacterial hyaluronidase (E.C. 4.2.2.1) for preparation of chemically fully O-sulfated oligosaccharides. The hyaluro-oligosaccharide (HAoligo) mixture obtained by partial digestion was repeatedly applied to low pressure gel permeation chromatographic separation to purify the size-unified oligosaccharide ranged from 4- to 20-mer. The purity and size of each HAoligo was confirmed by using proton nuclear magnetic resonance ((1)H NMR) spectroscopy, capillary electrophoresis (CE) on normal polarity mode, and a newly established separation method by normal phase chromatography with Amide-80 column. The purified HAoligos ranged 4- to 20-mer were applied to chemically fully O-sulfation. Characterization of chemically fully O-sulfated HAoligos was performed by both chemical compositional analyses after hydrolysis and (1)H NMR spectroscopy. While the anti-factor IIa activity of 4- to 20-mer O-sulfated HAoligos was less than 3.1 units/mg, the inhibitory action for hyaluronidase (bovine testicular hyaluronidase (E.C.3.2.1.35)) of the oligosaccharides ranged 16- to 20-mer were corresponding to 79% of that shown by fully O-sulfated hyaluronan (MW 100 kDa) through both competitive and noncompetitive effects.
authors.affiliation: Faculty of Pharmaceutical Sciences, Chiba University, 1-33, Yayoi, Inage, Chiba 263-8522, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Suzuki
authors.forename: H
authors.initials: H
authors.lastname: Toyoda
authors.forename: T
authors.initials: T
authors.lastname: Toida
authors.forename: T
authors.initials: T
authors.lastname: Imanari
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004591:Electrophoresis, Polyacrylamide Gel; D004791:Enzyme Inhibitors / Q000494:pharmacology*; D006820:Hyaluronic Acid / Q000737:chemistry*; D006821:Hyaluronoglucosaminidase / Q000037:antagonists & inhibitors*; D009844:Oligosaccharides / Q000737:chemistry / Q000494:pharmacology*; D013464:Sulfuric Acids / Q000737:chemistry
chemical_list: D004791:Enzyme Inhibitors; D009844:Oligosaccharides; D013464:Sulfuric Acids; D006820:Hyaluronic Acid; D006821:Hyaluronoglucosaminidase