Methods for manipulating carbohydrate processing pathways in cells of interest are provided. Methods are directed at manipulating multiple pathways involved with the sialylation reaction by using recombinant DNA technology and substrate feeding approaches to enable the production of sialylated glycoproteins in cells of interest. These carbohydrate engineering efforts encompass the implementation of new carbohydrate bioassays, the examination of a selection of insect cell lines and the use of bioinformatics to identify gene sequences for critical processing enzymes. The compositions comprise cells of interest producing sialylated glycoproteins. The methods and compositions are useful for heterologous expression of glycoproteins.
提供了一种操作感兴趣细胞中
碳水化合物处理途径的方法。该方法旨在通过利用
重组DNA技术和底物供应方法来操纵与
唾液酸化反应有关的多个途径,从而使感兴趣细胞中产生
唾液酸化糖蛋白。这些
碳水化合物工程努力包括实施新的
碳水化合物生物测定方法,检查一系列昆虫
细胞系,并利用
生物信息学来鉴定关键处理酶的
基因序列。这些组成部分包括产生
唾液酸化糖蛋白的感兴趣细胞。这些方法和组成物对于异源表达糖蛋白非常有用。