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1-(3-tert-butylphenyl)-2,2,2-trifluoroethanone as a potent transition-state analogue slow-binding inhibitor of human acetylcholinesterase: Kinetic, MD and QM/MM studies

Zueva I.V.; Lushchekina S.V.; Pottie I.R.; Darvesh S.; Masson P. (2020)

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Kinetic studies and molecular modeling of human acetylcholinesterase (AChE) inhibition by a fluorinated acetophenone derivative, 1-(3-tert-butylphenyl)-2,2,2-trif ...
3D structure of the natural tetrameric form of human butyrylcholinesterase as revealed by cryoEM, SAXS and MD

Boyko K.; Baymukhametov T.; Chesnokov Y.; Hons M.; Lushchekina S.; Konarev P.; Lipkin A.; Vasiliev A.; Masson P.; Popov V.; Kovalchuk M. (2019)

© 2018 The Authors Human plasma butyrylcholinesterase (BChE) is an endogenous bioscavenger that hydrolyzes numerous medicamentous and poisonous esters and scavenges potent organophosphorus nerve agents. BChE is thus a ...
6-methyluracil derivatives as bifunctional acetylcholinesterase inhibitors for the treatment of Alzheimer's disease

Semenov V.; Zueva I.; Mukhamedyarov M.; Lushchekina S.; Kharlamova A.; Petukhova E.; Mikhailov A.; Podyachev S.; Saifina L.; Petrov K.; Minnekhanova O.; Zobov V.; Nikolsky E.; Masson P.; Reznik V. (2015)

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Novel 6-methyluracil derivatives with ω-(substituted benzylethylamino)alkyl chains at the nitrogen atoms of the pyrimidine ring were designed and synthesized. The numbers ...
6-Methyluracil derivatives as peripheral site ligand-hydroxamic acid conjugates: Reactivation for paraoxon-inhibited acetylcholinesterase

Semenov V.E.; Zueva I.V.; Lushchekina S.V.; Lenina O.A.; Gubaidullina L.M.; Saifina L.F.; Shulaeva M.M.; Kayumova R.M.; Saifina A.F.; Gubaidullin A.T.; Kondrashova S.A.; Latypov S.K.; Masson P.; Petrov K.A. (2020)

© 2019 Elsevier Masson SAS New uncharged conjugates of 6-methyluracil derivatives with imidazole-2-aldoxime and 1,2,4-triazole-3-hydroxamic acid units were synthesized and studied as reactivators of organophosphate-inhibited ...
A new sensitive spectrofluorimetric method for measurement of activity and kinetic study of cholinesterases

Mukhametgalieva A.R.; Zueva I.V.; Aglyamova A.R.; Lushchekina S.V.; Masson P. (2020)

© 2019 Elsevier B.V. A new spectrofluorimetric method more sensitive than the Ellman method was developed for determination of both acetylcholinesterase and butyrylcholinesterase activity and for kinetic analysis of these ...
A novel expression cassette delivers efficient production of exclusively tetrameric human butyrylcholinesterase with improved pharmacokinetics for protection against organophosphate poisoning

Terekhov S.; Smirnov I.; Bobik T.; Shamborant O.; Zenkova M.; Chernolovskaya E.; Gladkikh D.; Murashev A.; Dyachenko I.; Palikov V.; Palikova Y.; Knorre V.; Belogurov A.; Ponomarenko N.; Blackburn G.; Masson P.; Gabibov A. (2015)

© 2015 Published by Elsevier B.V. Butyrylcholinesterase is a stoichiometric bioscavenger against poisoning by organophosphorus pesticides and nerve agents. The low level of expression and extremely rapid clearance of ...
Application of Tetrameric Recombinant Human Butyrylcholinesterase as a Biopharmaceutical for Amelioration of Symptoms of Acute Organophosphate Poisoning

Terekhov S.; Palikov V.; Palikova Y.; Dyachenko I.; Shamborant O.; Smirnov I.; Masson P.; Gabibov A. (2017)

© 2017, Springer Science+Business Media, LLC. We present a procedure for optimizing the expression of recombinant tetrameric butyrylcholinesterase that enables large-scale production with the yield > 30 mg/liter ( > 90 ...
Autoregulation of acetylcholine release and micro-pharmacodynamic mechanisms at neuromuscular junction: Selective acetylcholinesterase inhibitors for therapy of myasthenic syndromes

Petrov K.; Nikolsky E.; Masson P. (2018)

© 2018 Petrov, Nikolsky and Masson. Neuromuscular junctions (NMJs) are directly involved into such indispensable to life processes as respiration and locomotion. However, motor nerve forms only one synaptic contact at each ...
Blockade of Metabotropic GABA-B Receptors as an Approach to Reduce Toxic Peripheral Effects of Cholinesterase Inhibitors

Lenina O.; Masson P.; Petrov K. (2019)

© 2018, Springer Science+Business Media, LLC, part of Springer Nature. The application of organophosphate (OP) pesticides in agriculture, in addition to the existence of chemical warfare nerve agents and their possible use ...
Catalytic bioscavengers against organophosphorus agents: mechanistic issues of self-reactivating cholinesterases

Lushchekina S.; Masson P. (2018)

© 2018 Elsevier B.V. Catalytic bioscavengers are the second-generation bioscavengers. These biopharmaceuticals are intended to degrade toxic organophosphorus agents on the skin for decontamination or in the bloodstream for ...
Characterization of a novel butyrylcholinesterase point mutation (p.Ala34Val), "silent" with mivacurium

Delacour H.; Lushchekina S.; Mabboux I.; Ceppa F.; Masson P.; Schopfer L.; Lockridge O. (2014)

© 2014 Elsevier Inc. All rights reserved. Butyrylcholinesterase deficiency is characterized by prolonged apnea after the use of muscle relaxants (suxamethonium or mivarcurium) in patients who have mutations in the BCHE ...
Chemical polysialylation and in vivo tetramerization improve pharmacokinetic characteristics of recombinant human butyrylcholinesterase-based bioscavengers

Terekhov S.; Smirnov I.; Shamborant O.; Bobik T.; Ilyushin D.; Murashev A.; Dyachenko I.; Palikov V.; Knorre V.; Belogurov A.; Ponomarenko N.; Kuzina E.; Genkin D.; Masson P.; Gabibov A. (2015)

© 2015 Park-media, Ltd. Organophosphate toxins (OPs) are the most toxic low-molecular compounds. The extremely potent toxicity of OPs is determined by their specificity toward the nerve system. Human butyrylcholinesterase ...
Cholinesterase reactivators and bioscavengers for pre- and post-exposure treatments of organophosphorus poisoning

Masson P.; Nachon F. (2017)

© 2017 International Society for Neurochemistry.Organophosphorus agents (OPs) irreversibly inhibit acetylcholinesterase (AChE) causing a major cholinergic syndrome. The medical counter-measures of OP poisoning have not ...
Combination delivery of two oxime-loaded lipid nanoparticles: Time-dependent additive action for prolonged rat brain protection

Pashirova T.; Braïki A.; Zueva I.; Petrov K.; Babaev V.; Burilova E.; Samarkina D.; Rizvanov I.; Souto E.; Jean L.; Renard P.; Masson P.; Zakharova L.; Sinyashin O. (2018)

© 2018 Elsevier B.V. A novel approach for brain protection against poisoning by organophosphorus agents is developed based on the combination treatment of dual delivery of two oximes. Pralidoxime chloride (2-PAM) and a ...
Computational Exploration of Reactivity of 6-Methyluracil/Imidazole-2-Carbaldehyde Oxime Conjugate

Lushchekina S.; Ayupov R.; Semenov V.; Petrov K.; Masson P. (2017)

© 2016, Springer Science+Business Media New York.Molecular docking and ab intio quantum mechanical calculations were used to assess the nucleophilic reactivity of conjugates of 6-methyluracil and imidazole-2-carbaldehyde ...
Computer-designed active human butyrylcholinesterase double mutant with a new catalytic triad

Grigorenko B.; Novichkova D.; Lushchekina S.; Zueva I.; Schopfer L.; Nemukhin A.; Varfolomeev S.; Lockridge O.; Masson P. (2019)

© 2019 Elsevier B.V. A computer-designed mutant of human butyrylcholinesterase (BChE), N322E/E325G, with a novel catalytic triad was made. The catalytic triad of the wild-type enzyme (S198·H438·E325) was replaced by ...
Current and emerging strategies for organophosphate decontamination: special focus on hyperstable enzymes

Jacquet P.; Daudé D.; Bzdrenga J.; Masson P.; Elias M.; Chabrière E. (2016)

© 2016, Springer-Verlag Berlin Heidelberg.Organophosphorus chemicals are highly toxic molecules mainly used as pesticides. Some of them are banned warfare nerve agents. These compounds are covalent inhibitors of ...
Dynamics of human acetylcholinesterase bound to non-covalent and covalent inhibitors shedding light on changes to the water network structure

Peters J.; Martinez N.; Trovaslet M.; Scannapieco K.; Koza M.; Masson P.; Nachon F. (2016)

© 2016 the Owner Societies.We investigated the effects of non-covalent reversible and covalent irreversible inhibitors on human acetylcholinesterase and human butyrylcholinesterase. Remarkably a non-covalent inhibitor, ...
Emergence of catalytic bioscavengers against organophosphorus agents

Masson P.; Lushchekina S. (2016)

© 2016 Elsevier Ireland LtdBioscavengers are an effective alternative approach for pre- and post-exposure treatments of nerve agent (NA) poisoning. Bioscavengers are natural or recombinant enzymes, reactive proteins, and ...
Impact of sucrose as osmolyte on molecular dynamics of mouse acetylcholinesterase

Lushchekina S.V.; Inidjel G.; Martinez N.; Masson P.; Trovaslet-Leroy M.; Nachon F.; Koza M.M.; Seydel T.; Peters J. (2020)

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. The enzyme model, mouse acetylcholinesterase, which exhibits its active site at the bottom of a narrow gorge, was investigated in the presence of different ...

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