Abstract
Background: Alzheimer's disease (AD) is the most well-known reason for disability in persons aged greater than 65 years worldwide. AD influences the part of the brain that controls cognitive and non-cognitive functions.
Objective: The study focuses on the screening of natural compounds for the inhibition of AChE and BuChE using a computational methodology.
Methods: We performed a docking-based virtual screening utilizing the 3D structure of AChE and BuChE to search for potential inhibitors for AD. In this work, a screened inhibitor Ajmalicine similarity search was carried out against a natural products database (Super Natural II). Lipinski rule of five was carried out and docking studies were performed between ligands and enzyme using ‘Autodock4.2’.
Results: Two phytochemical compounds SN00288228 and SN00226692 were predicted for the inhibition of AChE and BuChE, respectively. The docking results revealed Ajmalicine, a prominent natural alkaloid, showing promising inhibitory potential against AChE and BuChE with the binding energy of -9.02 and -8.89 kcal/mole, respectively. However, SN00288228- AChE, and SN00226692-BuChE were found to have binding energy -9.88 and -9.54 kcal/mole, respectively. These selected phytochemical compounds showed better interactions in comparison to Ajmalicine with the target molecule.
Conclusion: The current study verifies that SN00288228 and SN00226692 are more capable inhibitors of human AChE and BuChE as compared to Ajmalicine with reference to ΔG values.
Keywords: Alzheimer's disease, AChE, BuChE, ajmalicine, binding energy, inhibition constant.
[http://dx.doi.org/10.3892/br.2016.630] [PMID: 27123241]
[http://dx.doi.org/10.3390/molecules24183233] [PMID: 31491967]
[http://dx.doi.org/10.1212/WNL.0b013e31828726f5] [PMID: 29385058]
[http://dx.doi.org/10.3390/molecules23020296] [PMID: 29385058]
[http://dx.doi.org/10.1016/j.jyp.2013.11.005] [PMID: 24563598]
[http://dx.doi.org/10.1146/annurev.ps.46.020195.002425] [PMID: 7872736]
[http://dx.doi.org/10.1016/j.parkreldis.2004.04.001] [PMID: 15465398]
[http://dx.doi.org/10.2174/1573409913666170414123825] [PMID: 28413992]
[http://dx.doi.org/10.1155/2014/291214] [PMID: 25050335]
[http://dx.doi.org/10.2174/1871527315666161003165855] [PMID: 27712576]
[http://dx.doi.org/10.3928/02793695-20110407-03] [PMID: 21553703]
[http://dx.doi.org/10.1111/j.1742-4658.2010.07861.x] [PMID: 20883446]
[http://dx.doi.org/10.1002/(SICI)1099-1352(199601)9:1<1::AID-JMR241>3.0.CO;2-6] [PMID: 8723313]
[http://dx.doi.org/10.1016/S0928-4257(99)80002-3] [PMID: 16572227]
[http://dx.doi.org/10.1039/b508966m] [PMID: 16572227]
[http://dx.doi.org/10.1056/NEJM198611133152001] [PMID: 2430180]
[http://dx.doi.org/10.1185/03007990152673800] [PMID: 11900310]
[http://dx.doi.org/10.2174/1389200221666200103092719] [PMID: 31902351]
[http://dx.doi.org/10.1016/S0169-409X(00)00129-0] [PMID: 11259830]
[http://dx.doi.org/10.2174/18715273113126660162] [PMID: 24059300]
[http://dx.doi.org/10.6026/97320630012400] [PMID: 28293071]
[http://dx.doi.org/10.2174/1573406413666161111152720] [PMID: 27834134]
[http://dx.doi.org/10.4103/0973-1296.185726] [PMID: 27563218]
[http://dx.doi.org/10.1007/978-3-642-66646-9_3]
[http://dx.doi.org/10.3389/fbioe.2019.00375] [PMID: 31828069]
[http://dx.doi.org/10.2174/18715273113126660163] [PMID: 24059299]
[http://dx.doi.org/10.1042/bj2600625] [PMID: 2669736]
[http://dx.doi.org/10.1515/znc-2000-1-219] [PMID: 10739108]
[http://dx.doi.org/10.1073/pnas.84.11.3555] [PMID: 3035536]
[http://dx.doi.org/10.1016/j.lwt.2019.108889]