PT - JOURNAL ARTICLE AU - Rock, Brooke M. AU - Tometsko, Mark E. AU - Patel, Sonal K. AU - Hamblett, Kevin J. AU - Fanslow, William C. AU - Rock, Dan A. TI - Intracellular Catabolism of an Antibody Drug Conjugate with a Noncleavable Linker AID - 10.1124/dmd.115.064253 DP - 2015 Sep 01 TA - Drug Metabolism and Disposition PG - 1341--1344 VI - 43 IP - 9 4099 - http://dmd.aspetjournals.org/content/43/9/1341.short 4100 - http://dmd.aspetjournals.org/content/43/9/1341.full SO - Drug Metab Dispos2015 Sep 01; 43 AB - Antibody drug conjugates are emerging as a powerful class of antitumor agents with efficacy across a range of cancers; therefore, understanding the disposition of this class of therapeutic is crucial. Reported here is a method of enriching a specific organelle (lysosome) to understand the catabolism of an anti-CD70 Ab-MCC-DM1, an antibody drug conjugate with a noncleavable linker. With such techniques a higher degree of concentration-activity relationship can be established for in vitro cell lines; this can aid in understanding the resultant catabolite concentrations necessary to exert activity.