CCT129202 is an Aurora kinase inhibitor with IC50 of 0.042 ± 0.022, 0.198 ± 0.05, and 0.227 ± 0.064 μmol/L for Aurora A, Aurora B, and Aurora C, respectively. CCT129202, a representative of a structurally novel series of imidazopyridine small-molecule inhibitors of Aurora kinase activity. This compound showed high selectivity for the Aurora kinases over a panel of other kinases tested and inhibits proliferation in multiple cultured human tumor cell lines. Importantly, CCT129202 increased the inhibitory effect of vincristine and paclitaxel on ABCB1 overexpressing KBv200 cell xenografts in nude mice and human esophageal cancer tissue overexpressing ABCB1 ex vivo, respectively. Furthermore, the ATPase activity of ABCB1 was inhibited by CCT129202. Homology modeling predicted the binding conformation of CCT129202 within the large hydrophobic cavity of ABCB1. On the other hand, CCT129202 neither apparently altered the expression levels of ABCB1 and ABCG2 nor inhibited the activity of Aurora kinases in MDR cells under the concentration of reversal MDR. In conclusion, CCT129202 significantly reversed ABCB1- and ABCG2-mediated MDR in vitro, in vivo and ex vivo by inhibiting the function of their transporters and enhanced the eradication of cancer stem-like cells by chemotherapeutic agents.
|Cell lines||Colo205, SW620, HT29, KW12, Hela, A2780, OVCAR8, MDA-MB-157, MV4-11 and HCT-116 cells line|
|Preparation method||Cell Viability Assay.
The effects of CCT129202 on cell proliferation were analyzed with the colorimetric 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay (Sigma) according to the manufacturer's instructions. Cells were plated in 96-well plates at 2,500 per well and were treated with a range of 0 to 50 μmol/L of CCT129202 for 72 h. The absorbance was measured at 570 nm using the Wallac VICTOR2TM 1420 Multilabel Counter (PerkinElmer).
|Concentrations||0~10 μ M|
|Incubation time||72 h|
|Animal models||human HCT116 colon carcinoma xenografts|
|Formulation||10% DMSO, 5% Tween 20, and 85% sterile saline at 0.1 mL/10 g|
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
|Source||Mol Pharm (2013). Figure 2. CCT-129202|
|Cell Lines||SP and NSP cells of A549|
|Incubation Time||24 h|
|Results||CCT129202 significantly abolished the drug-resistant ability of SP cells to doxorubicin but did not alter IC50 value of doxorubicin in NSP cells|
Enhancing Chemosensitivity in ABCB1- and ABCG2-Overexpressing Cells and Cancer Stem-like Cells by An Aurora Kinase Inhibitor CCT129202.
Cheng C, et al. Mol Pharm. 2012 Jun 13. PMID: 22632055.
Mechanism of action of the Aurora kinase inhibitor CCT129202 and in vivo quantification of biological activity.
Chan F, et al. Mol Cancer Ther. 2007 Dec;6(12 Pt 1):3147-57. PMID: 18089709.
|Related Aurora Kinase Products|
SNS-314 is a potent and selective inhibitor of Aurora A, Aurora B and Aurora C with IC50 of 9 nM, 31 nM, and 3 nM, respectively.
GSK1070916 is a reversible and ATP-competitive inhibitor of Aurora B/C with IC50 of 3.5 nM/6.5 nM. It displays >100-fold selectivity against the closely related Aurora A-TPX2 complex.
PHA-680632 is potent inhibitor of Aurora A, Aurora B and Aurora C with IC50 of 27 nM, 135 nM and 120 nM, respectively. It has 10- to 200-fold higher IC50 for FGFR1, FLT3, LCK, PLK1, STLK2, and VEGFR2/3.
MK-5108 (VX-689) is a highly selective Aurora A inhibitor with IC50 of 0.064 nM and is 220- and 190-fold more selective for Aurora A than Aurora B/C, while it inhibits TrkA with less than 100-fold selectivity.
PF-03814735 is a novel, potent and reversible inhibitor of Aurora A/B with IC50of 0.8 nM/5 nM, is less potent to Flt3, FAK, TrkA, and minimally active to Met and FGFR1.
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