Abstract:
:A series of new indole-3-acetic acid (IAA)-tacrine hybrids as dual acetylcholinesterase (AChE)/butyrylcholinesterase (BChE) inhibitors were designed and prepared based on the molecular docking mode of AChE with an IAA derivative (1a), a moderate AChE inhibitor identified by screening our compound library for anti-Alzheimer's disease (AD) drug leads. The enzyme assay results revealed that some hybrids, e.g. 5d and 5e, displayed potent dual in vitro inhibitory activities against AChE/BChE with IC50 values in low nanomolar range. Molecular modeling studies in tandem with kinetic analysis suggest that these hybrids target both catalytic active site and peripheral anionic site of cholinesterase (ChE). Molecular dynamic simulations and Molecular Mechanics/Poisson-Boltzmann Surface Area (MM-PBSA) calculations indicate that 5e has more potent binding affinity than hit 1a, which may explain the stronger inhibitory effect of 5e on AChE. Furthermore, their predicted pharmacokinetic properties and in vitro influences on mouse brain neural network electrical activity were discussed. Taken together, compound 5e can be highlighted as a lead compound worthy of further optimization for designing new anti-AD drugs.
journal_name
Bioorg Chemjournal_title
Bioorganic chemistryauthors
Cheng ZQ,Zhu KK,Zhang J,Song JL,Muehlmann LA,Jiang CS,Liu CL,Zhang Hdoi
10.1016/j.bioorg.2018.10.057subject
Has Abstractpub_date
2019-03-01 00:00:00pages
277-288eissn
0045-2068issn
1090-2120pii
S0045-2068(18)30901-5journal_volume
83pub_type
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