Synthesis of heparin partial structures and their binding activities to platelets
作者:Shuhei Koshida、Yasuo Suda、Michael Sobel、Julie Ormsby、Shoichi Kusumoto
DOI:10.1016/s0960-894x(99)00550-8
日期:1999.11
A synthetic pentasaccharide corresponding to the antithrombin III-binding region in heparin was also found to bind to human platelets. To identify the platelet-binding site in the pentasaccharide which is expected to be a novel sequence in heparin responsible for its platelet-binding, five partial structures of this particular pentasaccharide were synthesized. In a competitive assay using [H-3]-heparin, a trisaccharide, O-(2-deoxy-2-sulfamido-3,6-di-O-sulfo-alpha-D-glucopyranosyl)-(1-->4)-O-(2-O-sulfo-alpha-L-idopyranosyluronic acid)-(1-->4)-2-deoxy-2-sulfamido-6-O-sulfo-alpha-D-glucopyranose, was concluded to be a high-affinity site for heparin's binding to platelets. (C) 1999 Elsevier Science Ltd. All rights reserved.