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    1year
    Targeting anticancer agents to the tumor microenvironment with cathepsin B cleavable drug-linker conjugates of phosphatidylserine-binding proteins (AACR 2023)
    The payloads include benzosuberene-based aniline KGP156 and its phenolic congener KGP18, dihydronaphthalene-based KGP05, and indole-based OXi8006. Conjugation of thiolated Bavituximab with Mc-Val-Cit-PABC-KGP156 gave a drug/antibody ratio (DAR) of 3.6/1 after cleavage by cathepsin B and determination of released KGP156 by LC-MS. These studies revealed 1) distinct differences in cleavage rates for drug-linkers, 2) cleavage by cathepsin L, and 3) efficient cathepsin B mediated release of payload from the ADC.
    Tarvacin (bavituximab) • benzosuberene • cathepsin L inhibitors