The present invention relates to a method of separating antibodies from contaminants in a solution, which method comprises contacting the solution with a chromatography resin comprised of a support to which multi-modal ligands have been immobilised, wherein a multi-modal ligand comprises at least one cation-exchanging group and at least one aromatic or heteroaromatic ring system. In one embodiment, the ring-forming atoms of the aromatic or hereoaromatic entity are selected among C, S or O, and the cation exchanging group is a weak cation exchanger. The present method may be used as a single step procedure or as a polishing step following a capture on a Protein A column.
本发明涉及一种从溶液中分离
抗体与污染物的方法,该方法包括将溶液与由支持物质和多模态
配体组成的层析
树脂接触,其中多模态
配体包括至少一个阳离子交换基团和至少一个芳香或杂芳环系统。在一种实施方式中,芳香或杂芳实体的环形成原子被选择为C、S或O,而阳离子交换基团是弱阳离子交换剂。该方法可以作为单步程序或在蛋白A柱捕获后进行精加工步骤。