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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Scutt, Paul J. Williams, David H. Chu, Matthew L. H. Bignell, Colin R. Eyers, Patrick A. Cherry, Mike Sloane, Dominic A. |
| Description | Author Affiliation: Scutt PJ ( Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, United Kingdom.) |
| Abstract | The Aurora and Polo-like kinases are central components of mitotic signaling pathways, and recent evidence suggests that substantial cross-talk exists between Aurora A and Plk1. In addition to their validation as novel anticancer agents, small molecule kinase inhibitors are increasingly important tools to help dissect clinically relevant protein phosphorylation networks. However, one major problem associated with kinase inhibitors is their promiscuity toward 'off-target' members of the kinome, which makes interpretation of data obtained from complex cellular systems challenging. Additionally, the emergence of inhibitor resistance in patients makes it clear that an understanding of resistance mechanisms is essential to inform drug design. In this study, we exploited structural knowledge of the binding modes of VX-680, an Aurora kinase inhibitor, and BI 2536, a Polo-like kinase inhibitor, to design and evaluate drug-resistant kinase mutants. Using inducible stable human cell lines, we authenticated mitotic targets for both compounds and demonstrated that Aurora A mutants exhibit differential cellular sensitivity toward the inhibitors VX-680 and MLN8054. In addition, we validated Aurora B as an important anti-proliferative target for VX-680 in model human cancer cells. Finally, this chemical genetic approach allowed us to prove that Aurora A activation loop phosphorylation is controlled by a Plk1-mediated pathway in human cells. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 23 |
| Volume Number | 284 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2009-06-05 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Protein-Serine-Threonine Kinases Metabolism Aurora Kinase B Aurora Kinases Benzamides Binding Sites DNA Mutational Analysis DNA, Complementary Enzyme Inhibitors Pharmacology Imatinib Mesylate Kinetics Mitosis Mutagenesis Piperazines Antagonists & Inhibitors Genetics Pyrimidines Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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