Provided are binding polypeptides (e.g., antibodies), and drug conjugates thereof, comprising an Fc domain with an altered glycosylation profile and reduced effector function. In particular embodiment, the Fc domain comprises: an asparagine residue at amino acid position 298, according to EU numbering; and a serine or threonine residue at amino acid position 300, according to EU numbering. Also provided are nucleic acids encoding the antigen-binding polypeptides, recombinant expression vectors and host cells for making such antigen-binding polypeptides. Methods of using the antigen-binding polypeptides disclosed herein to treat disease are also provided.
本文提供了结合
多肽(如
抗体)及其药物共轭物,它们包含一个具有改变的糖基化特征和降低的效应功能的Fc结构域。在特定的实施方案中,Fc 结构域包括:根据欧盟编号,位于
氨基酸位置 298 的天冬酰胺残基;以及根据欧盟编号,位于
氨基酸位置 300 的
丝氨酸或苏
氨酸残基。此外,还提供了编码抗原结合
多肽的核酸、
重组表达载体和用于制造这种抗原结合
多肽的宿主细胞。还提供了使用本文公开的抗原结合
多肽治疗疾病的方法。