PMID- 20951947 OWN - NLM STAT- MEDLINE DCOM- 20101103 LR - 20211020 IS - 1878-3686 (Electronic) IS - 1535-6108 (Print) IS - 1535-6108 (Linking) VI - 18 IP - 4 DP - 2010 Oct 19 TI - Pharmacologic inhibition of the anaphase-promoting complex induces a spindle checkpoint-dependent mitotic arrest in the absence of spindle damage. PG - 382-95 LID - 10.1016/j.ccr.2010.08.010 [doi] AB - Microtubule inhibitors are important cancer drugs that induce mitotic arrest by activating the spindle assembly checkpoint (SAC), which, in turn, inhibits the ubiquitin ligase activity of the anaphase-promoting complex (APC). Here, we report a small molecule, tosyl-L-arginine methyl ester (TAME), which binds to the APC and prevents its activation by Cdc20 and Cdh1. A prodrug of TAME arrests cells in metaphase without perturbing the spindle, but nonetheless the arrest is dependent on the SAC. Metaphase arrest induced by a proteasome inhibitor is also SAC dependent, suggesting that APC-dependent proteolysis is required to inactivate the SAC. We propose that mutual antagonism between the APC and the SAC yields a positive feedback loop that amplifies the ability of TAME to induce mitotic arrest. CI - Copyright (c) 2010 Elsevier Inc. All rights reserved. FAU - Zeng, Xing AU - Zeng X AD - Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA. FAU - Sigoillot, Frederic AU - Sigoillot F FAU - Gaur, Shantanu AU - Gaur S FAU - Choi, Sungwoon AU - Choi S FAU - Pfaff, Kathleen L AU - Pfaff KL FAU - Oh, Dong-Chan AU - Oh DC FAU - Hathaway, Nathaniel AU - Hathaway N FAU - Dimova, Nevena AU - Dimova N FAU - Cuny, Gregory D AU - Cuny GD FAU - King, Randall W AU - King RW LA - eng GR - R56 GM066492/GM/NIGMS NIH HHS/United States GR - P50 CA089393/CA/NCI NIH HHS/United States GR - GM66492/GM/NIGMS NIH HHS/United States GR - GM085923/GM/NIGMS NIH HHS/United States GR - F32 GM085923/GM/NIGMS NIH HHS/United States GR - R01 GM066492/GM/NIGMS NIH HHS/United States GR - CA089393/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Cell JT - Cancer cell JID - 101130617 RN - 0 (Enzyme Inhibitors) RN - 0 (Mutant Proteins) RN - 0 (Prodrugs) RN - 0 (Proteasome Inhibitors) RN - 901-47-3 (Tosylarginine Methyl Ester) RN - EC 2.3.2.23 (Ubiquitin-Protein Ligase Complexes) RN - EC 2.3.2.27 (Anaphase-Promoting Complex-Cyclosome) RN - EC 3.4.25.1 (Proteasome Endopeptidase Complex) SB - IM MH - Anaphase-Promoting Complex-Cyclosome MH - Animals MH - Enzyme Activation/drug effects MH - Enzyme Inhibitors/pharmacology MH - HeLa Cells MH - Humans MH - Metaphase/drug effects MH - Microtubules/drug effects/metabolism MH - Mitosis/*drug effects MH - Mutant Proteins/metabolism MH - Prodrugs/pharmacology MH - Proteasome Endopeptidase Complex/metabolism MH - Proteasome Inhibitors MH - Protein Binding/drug effects MH - Protein Biosynthesis/drug effects MH - Spindle Apparatus/*drug effects/*pathology MH - Tosylarginine Methyl Ester/*pharmacology MH - Ubiquitin-Protein Ligase Complexes/*antagonists & inhibitors/metabolism MH - Xenopus PMC - PMC2957475 MID - NIHMS237726 COIS- The authors declare no financial conflict of interest. EDAT- 2010/10/19 06:00 MHDA- 2010/11/04 06:00 PMCR- 2011/10/19 CRDT- 2010/10/19 06:00 PHST- 2010/04/09 00:00 [received] PHST- 2010/07/01 00:00 [revised] PHST- 2010/08/10 00:00 [accepted] PHST- 2010/10/19 06:00 [entrez] PHST- 2010/10/19 06:00 [pubmed] PHST- 2010/11/04 06:00 [medline] PHST- 2011/10/19 00:00 [pmc-release] AID - S1535-6108(10)00307-7 [pii] AID - 10.1016/j.ccr.2010.08.010 [doi] PST - ppublish SO - Cancer Cell. 2010 Oct 19;18(4):382-95. doi: 10.1016/j.ccr.2010.08.010.