Oligosaccharides and oligosaccharides-protein conjugates derived from clostridium difficile polysaccharide PS-I, methods of synthesis and uses thereof, in particular as vaccines and diagnostic tools
申请人:Max-Planck-Gesellschaft zur Förderung der
Wissenschaften e.V.
公开号:EP2554549A1
公开(公告)日:2013-02-06
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 α-L-Rhap-(1→3)-β-D-Glcp-(1→4)-[α-L-Rhap-(1→3)]-α-D-Glcp-(1→2)-α-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.
A preferred method for synthesizing the pentasaccharide is shown below.
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α-L-Rhap-(1→3)-β-D-Glcp-(1→4)-[α-L-Rhap-(1→3)]-α-D-Glcp-(1→2)-α-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体L,用于与载体蛋白结合或在表面上固定。该发明的其他方面涉及有利的合成所述合成寡糖和寡糖-蛋白共轭物的方法,以及它们的用途,特别是作为疫苗和诊断工具。下面显示了一种合成五糖基的首选方法。