GSK1070916

GSK1070916 is a potent and selective inhibitor of Aurora B/C Kinase with Ki values of 0.38nM and 1.5nM, respectively [1].

GSK1070916 is a reversible ATP-competitive inhibitor of Aurora B and Aurora C with Ki values of 0.38nM and 1.5nM, respectively. The SPA assay shows GSK1070916 has a good selectivity over Aurora A. It inhibits Aurora B with IC50 value of 5nM but 1259nM for Aurora A. It is also reported that treatment of GSK1070916 suppresses cell proliferation in A549 human lung cancer cells with EC50 value of 7nM. Moreover, both in vitro and in vivo assays demonstrate GSK1070916 can inhibit the phosphorylation of histone H3, which is a substrate of Aurora B. GSK1070916 can also suppress tumor growth in mice with HL-60 tumor xenografts [1].

References:
[1] Adams ND, Adams JL, Burgess JL, Chaudhari AM, Copeland RA, Donatelli CA, Drewry DH, Fisher KE, Hamajima T, Hardwicke MA, Huffman WF, Koretke-Brown KK, Lai ZV, McDonald OB, Nakamura H, Newlander KA, Oleykowski CA, Parrish CA, Patrick DR, Plant R, Sarpong MA, Sasaki K, Schmidt SJ, Silva DJ, Sutton D, Tang J, Thompson CS, Tummino PJ, Wang JC, Xiang H, Yang J, Dhanak D. Discovery of GSK1070916, a potent and selective inhibitor of Aurora B/C kinase. J Med Chem. 2010 May 27;53(10):3973-4001.

Discovery of a new series of Aurora inhibitors through truncation of GSK1070916.[Pubmed:20335034]

Bioorg Med Chem Lett. 2010 Apr 15;20(8):2552-5.

Novel Aurora inhibitors were identified truncating clinical candidate GSK1070916. Many of these truncated compounds retained potent activity against Aurora B with good antiproliferative activity. Mechanistic studies suggested that these compounds, depending on the substitution pattern, may or may not exert their antiproliferative effects via inhibition of Aurora B. The SAR results from this investigation will be presented with an emphasis on the impact structural changes have on the cellular phenotype.

High chromosome number in hematological cancer cell lines is a negative predictor of response to the inhibition of Aurora B and C by GSK1070916.[Pubmed:21762492]

J Transl Med. 2011 Jul 15;9:110.

BACKGROUND: Aurora kinases play critical roles in mitosis and are being evaluated as therapeutic targets in cancer. GSK1070916 is a potent, selective, ATP competitive inhibitor of Aurora kinase B and C. Translation of predictive biomarkers to the clinic can benefit patients by identifying the tumors that are more likely to respond to therapies, especially novel inhibitors such as GSK1070916. METHODS: 59 Hematological cancer-derived cell lines were used as models for response where in vitro sensitivity to GSK1070916 was based on both time and degree of cell death. The response data was analyzed along with karyotype, transcriptomics and somatic mutation profiles to determine predictors of response. RESULTS: 20 cell lines were sensitive and 39 were resistant to treatment with GSK1070916. High chromosome number was more prevalent in resistant cell lines (p-value = 0.0098, Fisher Exact Test). Greater resistance was also found in cell lines harboring polyploid subpopulations (p-value = 0.00014, Unpaired t-test). A review of NOTCH1 mutations in T-ALL cell lines showed an association between NOTCH1 mutation status and chromosome number (p-value = 0.0066, Fisher Exact Test). CONCLUSIONS: High chromosome number associated with resistance to the inhibition of Aurora B and C suggests cells with a mechanism to bypass the high ploidy checkpoint are resistant to GSK1070916. High chromosome number, a hallmark trait of many late stage hematological malignancies, varies in prevalence among hematological malignancy subtypes. The high frequency and relative ease of measurement make high chromosome number a viable negative predictive marker for GSK1070916.

Discovery of GSK1070916, a potent and selective inhibitor of Aurora B/C kinase.[Pubmed:20420387]

J Med Chem. 2010 May 27;53(10):3973-4001.

The Aurora kinases play critical roles in the regulation of mitosis and are frequently overexpressed or amplified in human tumors. Selective inhibitors may provide a new therapy for the treatment of tumors with Aurora kinase amplification. Herein we describe our lead optimization efforts within a 7-azaindole-based series culminating in the identification of GSK1070916 (17k). Key to the advancement of the series was the introduction of a 2-aryl group containing a basic amine onto the azaindole leading to significantly improved cellular activity. Compound 17k is a potent and selective ATP-competitive inhibitor of Aurora B and C with K(i)* values of 0.38 +/- 0.29 and 1.5 +/- 0.4 nM, respectively, and is >250-fold selective over Aurora A. Biochemical characterization revealed that compound 17k has an extremely slow dissociation half-life from Aurora B (>480 min), distinguishing it from clinical compounds 1 and 2. In vitro treatment of A549 human lung cancer cells with compound 17k results in a potent antiproliferative effect (EC(50) = 7 nM). Intraperitoneal administration of 17k in mice bearing human tumor xenografts leads to inhibition of histone H3 phosphorylation at serine 10 in human colon cancer (Colo205) and tumor regression in human leukemia (HL-60). Compound 17k is being progressed to human clinical trials.

3D-QSAR and molecular docking studies on derivatives of MK-0457, GSK1070916 and SNS-314 as inhibitors against Aurora B kinase.[Pubmed:21151441]

Int J Mol Sci. 2010 Nov 2;11(11):4326-47.

Development of anticancer drugs targeting Aurora B, an important member of the serine/threonine kinases family, has been extensively focused on in recent years. In this work, by applying an integrated computational method, including comparative molecular field analysis (CoMFA), comparative molecular similarity indices analysis (CoMSIA), homology modeling and molecular docking, we investigated the structural determinants of Aurora B inhibitors based on three different series of derivatives of 108 molecules. The resultant optimum 3D-QSAR models exhibited (q(2) = 0.605, r(2) (pred) = 0.826), (q(2) = 0.52, r(2) (pred) = 0.798) and (q(2) = 0.582, r(2) (pred) = 0.971) for MK-0457, GSK1070916 and SNS-314 classes, respectively, and the 3D contour maps generated from these models were analyzed individually. The contour map analysis for the MK-0457 model revealed the relative importance of steric and electrostatic effects for Aurora B inhibition, whereas, the electronegative groups with hydrogen bond donating capacity showed a great impact on the inhibitory activity for the derivatives of GSK1070916. Additionally, the predictive model of the SNS-314 class revealed the great importance of hydrophobic favorable contour, since hydrophobic favorable substituents added to this region bind to a deep and narrow hydrophobic pocket composed of residues that are hydrophobic in nature and thus enhanced the inhibitory activity. Moreover, based on the docking study, a further comparison of the binding modes was accomplished to identify a set of critical residues that play a key role in stabilizing the drug-target interactions. Overall, the high level of consistency between the 3D contour maps and the topographical features of binding sites led to our identification of several key structural requirements for more potency inhibitors. Taken together, the results will serve as a basis for future drug development of inhibitors against Aurora B kinase for various tumors.

GSK-1070916 is a potent and selective ATP-competitive inhibitor of aurora B and aurora C with Kis of 0.38 and 1.5 nM, respectively, and is >250- fold selective over Aurora A.

GSK1070916,942918-07-2,GSK-1070916A,Natural Products,Aurora Kinase, buy GSK1070916 , GSK1070916 supplier , purchase GSK1070916 , GSK1070916 cost , GSK1070916 manufacturer , order GSK1070916 , high purity GSK1070916