Abstract
Background: Glycogen synthase kinase-3 (GSK-3) is involved in the phosphorylation and inactivation of glycogen synthase. GSK-3 inhibitors have been associated with a variety of diseases, including Alzheimer´s disease (AD), diabetes type II, neurologic disorders, and cancer. The inhibition of GSK-3β isoforms is likely to represent an effective strategy against AD.
Objective: The present work aimed to design and synthesize coumarin derivatives to explore their potential as GSK-3β kinase inhibitors.
Methods: The through different synthetic methods were used to prepare coumarin derivatives. The GSK-3β activity was measured through the ADP-Glo™ Kinase Assay, which quantifies the kinasedependent enzymatic production of ADP from ATP, using a coupled-luminescence-based reaction. A docking study was performed by using the crystallographic structure of the staurosporine/GSK-3β complex [Protein Data Bank (PDB) code: 1Q3D].
Results: The eleven coumarin derivatives were obtained and evaluated as potential GSK-3β inhibitors. Additionally, in silico studies were performed. The results revealed that the compounds 5c, 5d, and 6b inhibited GSK-3β enzymatic activity by 38.97–49.62% at 1 mM. The other coumarin derivatives were tested at 1 mM, 1 µM, and 1 nM concentrations and were shown to be inhibitor candidates, with significant IC50 (1.224–6.875 µM) values, except for compound 7c (IC50 = 10.809 µM). Docking simulations showed polar interactions between compound 5b and Lys85 and Ser203, clarifying the mechanism of the most potent activity.
Conclusion: The coumarin derivatives 3a and 5b, developed in this study, showed remarkable activity as GSK-3β inhibitors.
Keywords: Coumarin, Coumarin derivatives, Biological activity, GSK-3β, Enzymatic inhibition, Molecular docking.
Graphical Abstract
[http://dx.doi.org/10.1039/b819925f] [PMID: 19847339]
[http://dx.doi.org/10.1021/acs.joc.5b01713] [PMID: 26509478]
[http://dx.doi.org/10.2174/1385272820666160601155411]
[http://dx.doi.org/10.1016/j.bmc.2013.04.015] [PMID: 23673214]
[http://dx.doi.org/10.1016/j.bmc.2011.12.042] [PMID: 22257528]
[http://dx.doi.org/10.1016/j.ejmech.2016.05.014] [PMID: 27214510]
[http://dx.doi.org/10.1016/j.bioorg.2018.01.013] [PMID: 29421707]
[http://dx.doi.org/10.1016/j.sajb.2019.01.020]
[http://dx.doi.org/10.1016/j.ejmech.2018.01.003] [PMID: 29335210]
[http://dx.doi.org/10.1016/j.ejmech.2019.04.016] [PMID: 31005056]
[http://dx.doi.org/10.1007/s00018-007-7045-7] [PMID: 17530463]
[http://dx.doi.org/10.2174/1389450110607011377] [PMID: 17100578]
[http://dx.doi.org/10.1016/j.tibs.2003.12.004] [PMID: 15102436]
[http://dx.doi.org/10.1038/nrd1415] [PMID: 15173837]
[http://dx.doi.org/10.1016/j.bmcl.2017.01.041] [PMID: 28119025]
[http://dx.doi.org/10.1016/j.bioorg.2018.09.010] [PMID: 30245233]
[http://dx.doi.org/10.1016/j.ejmech.2019.02.001] [PMID: 30772605]
[http://dx.doi.org/10.1016/j.catcom.2011.07.002]
[http://dx.doi.org/10.1007/s10562-009-9940-z]
[http://dx.doi.org/10.1107/S0108270107008712]
[http://dx.doi.org/10.3390/molecules15010270] [PMID: 20110890]
[http://dx.doi.org/10.1021/jm200716y] [PMID: 21923181]
[http://dx.doi.org/10.1016/j.bmc.2013.06.049] [PMID: 23886808]
[http://dx.doi.org/10.1016/j.ejmech.2014.09.066] [PMID: 25262050]
[http://dx.doi.org/10.1016/j.ejmech.2011.11.005] [PMID: 22119152]
[http://dx.doi.org/10.1016/j.tetlet.2007.05.088]
[http://dx.doi.org/10.1186/1471-2121-8-34] [PMID: 17697341]
[http://dx.doi.org/10.1002/med.20119] [PMID: 18271054]
[http://dx.doi.org/10.1016/j.jmb.2003.08.031] [PMID: 14529625]
[http://dx.doi.org/10.1074/jbc.M002466200] [PMID: 11013232]
[http://dx.doi.org/10.7150/thno.14334] [PMID: 26941849]