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- W2031358049 abstract "MEK and Aurora A kinase inhibitors (AAK) have profound impacts on cell cycle progression. Inhibition of MEK leads to defects in cell-cycle progression followed by cell cycle arrest and/or apoptosis. These cell-cycle progression defects may in part be due to the role of MEK in the DNA replication or damage checkpoint responses through positive regulation of DNA repair mechanisms. AAK inhibition leads to chromosome congression and segregation defects leading to DNA damage followed by apoptosis or senesence. The overlapping biological effects of inhibition of AAK and MEK kinases in cell cycle progression and chromosomal integrity raise the possibility that inhibiting both targets would provide added benefit over the inhibition of either target alone. The in vivo antitumor activity of TAK-733, an investigational potent, selective, non-ATP-competitive allosteric inhibitor of MEK, in combination with alisertib, an investigational potent, selective, reversible, ATP-competitive inhibitor of Aurora A kinase, was examined in experimental human solid tumor xenograft models including NSCLC (NCI H23 [KRAS and LKB1 mutations]), CRC (SW620 [KRAS, APC, p53 mutations]), and pancreatic cancer (Panc 1 and Capan 1 [KRAS mutations] and BxPC-3 [No MAPK mutations]) models in immunocompromised mice. The previously established maximally efficacious doses for the single agents dosed once daily (QD) orally (PO) (10 mg/kg TAK-733 and 30-mg/kg alisertib) were examined. A lower dose of 20 mg/kg alisertib was also examined in the event the maximally efficacious dose of each agent was not tolerated in combination. The once daily (QD) concurrent oral administration of TAK-733 and alisertib resulted in additive to synergistic antitumor activity and in prolonged inhibition of tumor regrowth after terminating treatment compared to single agent treatment in all xenograft models examined. Concurrent administration of TAK-733 and alisertib daily for 21 days was well tolerated. Treatment with TAK-733 alone and in combination with alisertib clearly inhibited phosphorylated ERK and produced a slight increase in phosphorylated histone H3. The results from the nonclinical models examined demonstrate considerable improvement in nonclinical antitumor activity over either single agent alone and provide a biological rationale for clinical evaluation of a TAK-733/alisertib combination in patients with advanced malignancies. Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 3739. doi:1538-7445.AM2012-3739" @default.
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- W2031358049 date "2012-04-15" @default.
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- W2031358049 title "Abstract 3739: TAK-733, an investigational, selective MEK1/2 inhibitor, in combination with alisertib (MLN8237), an investigational, selective Aurora A kinase inhibitor is tolerated and results in additive to synergistic antitumor activity: Results from In Vivo Studies" @default.
- W2031358049 doi "https://doi.org/10.1158/1538-7445.am2012-3739" @default.
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