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Pan X, Liu N, Liu Y, Zhang Q, Wang K, Liu X, Zhang J. Design, synthesis, and biological evaluation of trizole-based heteroaromatic derivatives as Bcr-Abl kinase inhibitors. Eur J Med Chem 2022; 238:114425. [PMID: 35561654 DOI: 10.1016/j.ejmech.2022.114425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 01/01/2023]
Abstract
Bcr-Abl is a key driver in the pathophysiology of CML. Broadening the chemical diversity of Bcr-Abl kinase inhibitors to overcome drug resistance is a current medical demand for CML treatment. As a continuation to our research, a series of compounds with heteroaromatics-trizole scaffold as hinge binding moiety (HBM) were developed as Bcr-Abl inhibitors based on in silico modeling analysis. Biological results indicated that these compounds exhibited a significantly enhanced inhibition against Bcr-AblWT and Bcr-AblT315I in kinases assays, along with improved anti-proliferative activities in leukemia cell assays, compared with previous disclosed compounds. In particular, compounds 9f, 28c, 31, and 44c displayed comparable even better potency with that of Imatinib in enzymatic assay and cell assays including K562 cells and adriamycin-resistant K562/A cells. Moreover, compounds 9f, 28c, and 44c exhibited potent inhibition activities against K562R cells bearing T315I mutant with IC50 of 13.35 μM, 40.14 μM, and 1.91 μM, respectively, outperforming that of Imatinib. Meanwhile, the inhibition of Bcr-Abl activity in Ba/F3 cells demonstrated that these compounds exerted effects mainly by acting on Bcr-Abl. Additionally, compounds 9f, 28c, and 44c effectively induced apoptosis, arrest the cell cycle at S or G2/M phase, and inhibited phosphorylation of Bcr-Abl and STAT5 in a dose-dependent manner. Docking studies indicated that trizole indeed retained the hydrophobic interaction of aromatic heterocycles with hinge region, and ADME prediction suggested that tested compounds had a favorable safety profile. Therefore, aromatic heterocycles incorporated with trizole could serve as a promising HBM for Bcr-Abl inhibitors with proline as fexibile linker, and compounds 9f, 28c, especially 44c could be served as a starting point for further optimization.
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Affiliation(s)
- Xiaoyan Pan
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China.
| | - Nanxin Liu
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
| | - Yuying Liu
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
| | - Qingqing Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
| | - Kai Wang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
| | - Xueying Liu
- School of Pharmacy, The Fourth Military Medical University, No.169 West Changle Road, Xi'an, 710032, PR China
| | - Jie Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No.76 Yanta West Road, Xi'an, 710061, PR China
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Sonti R, Hertel-Hering I, Lamontanara AJ, Hantschel O, Grzesiek S. ATP Site Ligands Determine the Assembly State of the Abelson Kinase Regulatory Core via the Activation Loop Conformation. J Am Chem Soc 2018; 140:1863-1869. [PMID: 29319304 DOI: 10.1021/jacs.7b12430] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The constituent SH3, SH2, and kinase domains of the Abl kinase regulatory core can adopt an assembled (inactive) or a disassembled (active) conformation. We show that this assembly state strictly correlates with the conformation of the kinase activation loop induced by a total of 14 ATP site ligands, comprising all FDA-approved Bcr-Abl inhibiting drugs. The disassembly of the core by certain (type II) ligands can be explained by an induced push on the kinase N-lobe via A- and P-loop toward the SH3 domain. A similar sized P-loop motion is expected during nucleotide binding and release, which would be impeded in the assembled state, in agreement with its strongly reduced kinase activity.
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Affiliation(s)
- Rajesh Sonti
- Focal Area Structural Biology and Biophysics, Biozentrum, University of Basel , CH-4056 Basel, Switzerland
| | - Ines Hertel-Hering
- Focal Area Structural Biology and Biophysics, Biozentrum, University of Basel , CH-4056 Basel, Switzerland
| | - Allan Joaquim Lamontanara
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Oliver Hantschel
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne, Switzerland
| | - Stephan Grzesiek
- Focal Area Structural Biology and Biophysics, Biozentrum, University of Basel , CH-4056 Basel, Switzerland
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