www.impactjournals.com/oncotarget/ Oncotarget, Advance Publications 2014 Dual Aurora A and JAK2 kinase blockade effectively suppresses malignant transformation Hua Yang1, Harshani R. Lawrence3, Aslamuzzaman Kazi1, Harsukh Gevariya1, Ronil Patel1, Yunting Luo3, Uwe Rix1,2,4, Ernst Schonbrunn1,2,4, Nicholas J. Lawrence1,2,4 and Said M. Sebti1,2,4 1 Drug Discovery Department, University of South Florida, Tampa, FL, USA. 2 Chemical Biology and Molecular Medicine Program, University of South Florida, Tampa, FL, USA. 3 Chemical Biology Core, Moffitt Cancer Center and Research Institute, University of South Florida, Tampa, FL, USA. 4 Departments of Molecular Medicine and Oncologic Sciences, University of South Florida, Tampa, FL, USA. Correspondence: Saïd M. Sebti, e-mail:
[email protected] Conflict of Interests The Authors have no conflict of interests. Received: November 20, 2013 Accepted: March 19, 2014 Published: March 22, 2014 ABSTRACT Aurora A and JAK2 kinases are involved in cell division and tumor cell survival, respectively. Here we demonstrate that ectopic expression of Aurora A and JAK2 together is more effective than each alone at inducing non-transformed cells to grow in an anchorage-independent manner and to invade. Furthermore, siRNA silencing or pharmacological inhibition of Aurora A and JAK2 with Alisertib and Ruxolitinib, respectively, is more effective than blocking each kinase alone at suppressing anchorage-dependent and –independent growth and invasion as well as at inducing apoptosis. Importantly, we have developed dual Aurora and JAK inhibitors, AJI-214 and AJI-100, which potently inhibit Aurora A, Aurora B and JAK2 in vitro. In human cancer cells, these dual inhibitors block the auto-phosphorylation of Aurora A (Thr-288) and the phosphorylation of the Aurora B substrate histone H3 (Ser-10) and the JAK2 substrate STAT3 (Tyr-705).