The invention relates to a synthetic oligosaccharide representing part of the repeating unit of the Clostridium difficile glycopolymer PS-I and having the sequence of the pentasaccharide a-L-Rhap- ( 1→3 ) -β-D-Glcp- ( 1→4 ) - [a-L-Rhap- ( 1→3 ] -a-D-Glcp- ( 1→2 ) -a-D-Glcp or a synthetic fragment or derivative thereof. Preferably, the claimed synthetic oligosaccharide bears at least one linker L for conjugation to a carrier protein or for immobilization on a surface. Further aspects of the invention relate to advantageous methods for synthesizing said synthetic oligosaccharide and oligosaccharide-protein conjugate as well as to uses thereof, in particular as vaccines and diagnostic tools.
该发明涉及一种合成的
寡糖,代表Clostridium difficile糖聚合物PS-I的重复单元的一部分,并具有五糖基序列a-L-Rhap-(1→3)-β-D-Glcp-(1→4)-[a-L-Rhap-(1→3]-a-D-Glcp-(1→2)-a-D-Glcp或其合成片段或衍
生物。优选,所述的合成
寡糖至少带有一个连接子L,用于与载体蛋白共轭或固定在表面上。该发明的进一步方面涉及有利的合成所述合成
寡糖和
寡糖-蛋白共轭的方法,以及它们的用途,特别是作为疫苗和诊断工具。