Solid-Phase Oligosaccharide Tagging: a Technique for Manipulation of Immobilized Carbohydrates
申请人:Lohse Anders
公开号:US20080227092A1
公开(公告)日:2008-09-18
The invention relates to methods of manipulating immobilised carbohydrates by derivatisation. Depending on the nature of the derivatisation, the carbohydrate may thereby be more easily detected and/or identified or handled. In particular, the invention relates to methods of preparing a reactive sugar comprising the steps of: i) providing a sample comprising a reducing sugar; ii) providing a solid support covalently attached to a linker comprising a capture group comprising an —NH2 group, wherein said linker optionally is attached to said solid support via a spacer; iii) reacting said reducing sugar with said —NH2 group, thereby obtaining an immobilised sugar; iv) reacting free —NH2 groups with a capping agent, wherein the capping agent comprises a reactive group capable of reacting with an —NH2 group; and v) reducing C═N bonds with a reducing agent, thereby obtaining an reactive sugar of the structure SugarCH
n
—NH— linked to a solid support via a linker and optionally a spacer, wherein n is 1 or 2.
本发明涉及通过衍生化来操纵固定化碳水化合物的方法。根据衍生化的性质,碳水化合物可以更容易地被检测和/或识别或处理。特别地,本发明涉及制备反应性糖的方法,包括以下步骤:i)提供包含还原糖的样品;ii)提供共价连接到捕获基团(包括—NH2基团)的连接剂的固体支持,其中所述连接剂可以通过间隔物连接到所述固体支持;iii)将还原糖与所述—NH2基团反应,从而获得固定化糖;iv)用盖帽剂反应自由—NH2基团,所述盖帽剂包括能够与—NH2基团反应的反应性基团;v)用还原剂还原C═N键,从而获得结构为SugarCHn—NH—的反应性糖,其通过连接剂和可选的间隔物与固体支持连接,其中n为1或2。