The present invention relates generally to glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a spacer containing ((2-oxoethyl)thio)). In an aspect the invention provides oxo-eT linked glycoconjugates comprising a saccharide covalently conjugated to a carrier protein through a ((2-oxoethyl)thio) spacer having the formula (I): (I) wherein: A is a group (C═X)m wherein X is S or O and m is 0 or 1; B is a bond, O, or CH2; and when m is 0, B can also be (C═O); R is a C2-C16 alkylene, C2-C16 heteroalkylene, NH—C(═O)—C2-C16 alkylene, or NH—C(═O)—C2-C16 heteroalkylene, wherein said alkylene and heteroalkylene are optionally substituted by 1, 2 or 3 groups independently selected from COOR′ where R′ is selected from H, methyl, ethyl or propyl. The invention further relates to immunogenic compositions comprising such glycoconjugates, and to methods for the preparation and use of such glycoconjugates and immunogenic compositions.
本发明一般涉及糖共轭物,该糖共轭物包括通过含有((2-
氧代乙基)
硫)的间隔物与载体蛋白共价连接的糖。)在一个方面,本发明提供了
氧化-eT 连接的糖结合物,该糖结合物包含通过含有式(I)的((2-
氧代乙基)
硫代)间隔物与载体蛋白共价连接的糖:(I) 其中A是基团(C═X)m,其中X是S或O,m是0或1;B是键、O或
CH2;当m为0时,B也可以是(C═O);R是C2-C16亚烷基、C2-C16杂亚烷基、NH-C(═O)-C2-C16亚烷基或NH-C(═O)-C2-C16杂亚烷基,其中所述亚烷基和杂亚烷基任选被1、2或3个独立选自COOR′的基团取代,其中R′选自H、
甲基、乙基或丙基。本发明进一步涉及包含这种糖结合物的免疫原组合物,以及制备和使用这种糖结合物和免疫原组合物的方法。