Abstract: Disclosed herein are glycoconjugates having a cell-binding agent, such as an antibody, conjugating to a payload, such as a drug. The drug is conjugated to the cell-binding agent through an oligosaccharide linker. The glycoconjugates conjugated through the oligosaccharide linkers disclosed herein exhibit improved properties over prior glycoconjugates.

Abstract: This disclosure relates to glycoconjugates comprising glycosylated cell-binding agents conjugated to pyrrolobenzodiazepine (PBD) payloads. Glycoconjugates of particular interest include conjugates where the cell-binding agent is an antibody and the payload comprises a cytotoxic pyrrolobenzodiazepine (PBD) moiety, with the PBD moiety conjugated to the antibody via an oligosaccharide linker. The disclosure also relates to methods for preparing the glycoconjugates, along with methods for their use.