Camptothecin analogs conjugated to a glutamine residue in a protein, and their use

Abstract

Described herein are protein-drug conjugates and compositions thereof that are useful, for example, for target-specific delivery of therapeutic moieties, e.g., camptothecin analogs and / or derivatives. In certain embodiments, provided are specific and efficient methods for producing protein-drug constructs (e.g., antibody-drug conjugates) utilizing a combination of transglutaminase and 1,3-cycloaddition techniques. Camptothecin analogs, antibody-drug conjugates, and compositions which comprise glutaminyl-modified antibodies and camptothecin analog payloads and are provided.

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