Iacobazzi RM

References (3)

Title : Design, biological evaluation and X-ray crystallography of nanomolar multifunctional ligands targeting simultaneously acetylcholinesterase and glycogen synthase kinase-3 - Oukoloff_2019_Eur.J.Med.Chem_168_58
Author(s) : Oukoloff K , Coquelle N , Bartolini M , Naldi M , Le Guevel R , Bach S , Josselin B , Ruchaud S , Catto M , Pisani L , Denora N , Iacobazzi RM , Silman I , Sussman JL , Buron F , Colletier JP , Jean L , Routier S , Renard PY
Ref : Eur Journal of Medicinal Chemistry , 168 :58 , 2019
Abstract : Both cholinesterases (AChE and BChE) and kinases, such as GSK-3alpha/beta, are associated with the pathology of Alzheimer's disease. Two scaffolds, targeting AChE (tacrine) and GSK-3alpha/beta (valmerin) simultaneously, were assembled, using copper(I)-catalysed azide alkyne cycloaddition (CuAAC), to generate a new series of multifunctional ligands. A series of eight multi-target directed ligands (MTDLs) was synthesized and evaluated in vitro and in cell cultures. Molecular docking studies, together with the crystal structures of three MTDL/TcAChE complexes, with three tacrine-valmerin hybrids allowed designing an appropriate linker containing a 1,2,3-triazole moiety whose incorporation preserved, and even increased, the original inhibitory potencies of the two selected pharmacophores toward the two targets. Most of the new derivatives exhibited nanomolar affinity for both targets, and the most potent compound of the series displayed inhibitory potencies of 9.5nM for human acetylcholinesterase (hAChE) and 7nM for GSK-3alpha/beta. These novel dual MTDLs may serve as suitable leads for further development, since, in the micromolar range, they exhibited low cytotoxicity on a panel of representative human cell lines including the human neuroblastoma cell line SH-SY5Y. Moreover, these tacrine-valmerin hybrids displayed a good ability to penetrate the blood-brain barrier (BBB) without interacting with efflux pumps such as P-gp.
ESTHER : Oukoloff_2019_Eur.J.Med.Chem_168_58
PubMedSearch : Oukoloff_2019_Eur.J.Med.Chem_168_58
PubMedID: 30798053
Gene_locus related to this paper: torca-ACHE

Title : Investigating alkyl nitrates as nitric oxide releasing precursors of multitarget acetylcholinesterase-monoamine oxidase B inhibitors - Pisani_2018_Eur.J.Med.Chem_161_292
Author(s) : Pisani L , Iacobazzi RM , Catto M , Rullo M , Farina R , Denora N , Cellamare S , Altomare CD
Ref : Eur Journal of Medicinal Chemistry , 161 :292 , 2018
Abstract : Herein we envisaged the possibility of exploiting alkyl nitrates as precursors of alcohol-bearing dual inhibitors targeting acetylcholinesterase (AChE) and monoamine oxidase B (MAO B), key enzymes in neurodegenerative syndromes such as Alzheimer's disease (AD), through biotransformation unmasking an alcoholic function upon nitric oxide (NO) release. The cooperation to neuroprotection of low fluxes of NO and target enzymes' inhibition by the alcohol metabolites might return a multitargeting effect. The in vitro screening towards ChEs and MAOs of a collection of 21 primary alcohols disclosed a subset of dual inhibitors, among which three diverse chemotypes were selected to study the corresponding nitrates. Nitrate 14 proved to be a brain permeant, potent AChE-MAO B inhibitor by itself. Moreover, it protected human SH-SY5Y lines against rotenone and hydrogen peroxide with a poor inherent cytotoxicity and showed a slow conversion profile to its alcohol metabolite 9d that still behaved as bimodal and neuroprotective molecule.
ESTHER : Pisani_2018_Eur.J.Med.Chem_161_292
PubMedSearch : Pisani_2018_Eur.J.Med.Chem_161_292
PubMedID: 30366255

Title : Exploring Basic Tail Modifications of Coumarin-Based Dual Acetylcholinesterase-Monoamine Oxidase B Inhibitors: Identification of Water-Soluble, Brain-Permeant Neuroprotective Multitarget Agents - Pisani_2016_J.Med.Chem_59_6791
Author(s) : Pisani L , Farina R , Catto M , Iacobazzi RM , Nicolotti O , Cellamare S , Mangiatordi GF , Denora N , Soto-Otero R , Siragusa L , Altomare CD , Carotti A
Ref : Journal of Medicinal Chemistry , 59 :6791 , 2016
Abstract : Aiming at modulating two key enzymatic targets for Alzheimer's disease (AD), i.e., acetylcholinesterase (AChE) and monoamine oxidase B (MAO B), a series of multitarget ligands was properly designed by linking the 3,4-dimethylcoumarin scaffold to 1,3- and 1,4-substituted piperidine moieties, thus modulating the basicity to improve the hydrophilic/lipophilic balance. After in vitro enzymatic inhibition assays, multipotent inhibitors showing potencies in the nanomolar and in the low micromolar range for hMAO B and eeAChE, respectively, were prioritized and evaluated in human SH-SY5Y cell-based models for their cytotoxicity and neuroprotective effect against oxidative toxins (H2O2, rotenone, and oligomycin-A). The present study led to the identification of a promising multitarget hit compound (5b) exhibiting high hMAO B inhibitory activity (IC50 = 30 nM) and good MAO B/A selectivity (selectivity index, SI = 94) along with a micromolar eeAChE inhibition (IC50 = 1.03 muM). Moreover, 5b behaves as a water-soluble, brain-permeant neuroprotective agent against oxidative insults without interacting with P-gp efflux system.
ESTHER : Pisani_2016_J.Med.Chem_59_6791
PubMedSearch : Pisani_2016_J.Med.Chem_59_6791
PubMedID: 27347731