Abstract
Background: With the goal of developing Alzheimer's disease therapeutics, we have designed and synthesized novel piperidone fused dipeptide (DPPS) derivatives possessing dual action such as acetylcholinesterase (AChE) and beta-amyloid peptide (Aβ) aggregation inhibition. Designed peptide was synthesized by solid phase peptide synthesis using FMOC chemistry protocol and characterized by mass spectroscopy.
Methods: The amino acid sequence in peptide was analyzed by LC-MS-MS. In silico docking analysis was carried out using GLIDE software. The docking score using GLIDE was found to be -7.88 against AChE and -9.74 against BACE1 enzyme. In vitro enzyme inhibition assay was carried out for AChE enzyme and BACE1 enzyme.
Results: The IC50 values of AChE inhibition and BACE1 of DPPS were found to be 0.4796 μM/ml and 0.0154 μM/ml, respectively. The correlation of in silico and in vitro results showed that DPPS possessed a greater ability to inhibit BACE1 enzyme.
Keywords: Alzheimers disease, peptides, DPPS, enzyme inhibition, AChE, BACE1.
Graphical Abstract
[http://dx.doi.org/10.2174/156802605775009711] [PMID: 16375745]
[http://dx.doi.org/10.2174/092986706777452489] [PMID: 16787223]
[http://dx.doi.org/10.2174/138161209787315594] [PMID: 19199984]
[http://dx.doi.org/10.1021/jm701225u] [PMID: 18047264]
[http://dx.doi.org/10.1021/jm801292b] [PMID: 19374444]
[http://dx.doi.org/10.1021/jm030247h] [PMID: 14561080]
[http://dx.doi.org/10.1016/S0065-7743(03)38006-6]
[http://dx.doi.org/10.1016/j.neuint.2008.06.005] [PMID: 18602955]
[http://dx.doi.org/10.1016/j.tibtech.2003.10.005] [PMID: 14624865]
[http://dx.doi.org/10.1111/j.1399-3011.1993.tb00350.x] [PMID: 8103765]
[PMID: 7894606]
[http://dx.doi.org/10.1007/978-94-011-3034-9_23] [PMID: 1815783]
[http://dx.doi.org/10.1016/0006-2952(61)90145-9] [PMID: 13726518]
[http://dx.doi.org/10.1358/dot.2003.39.1.740206] [PMID: 12669110]