|
Binding affinity to rat cortex Nicotinic acetylcholine receptor alpha4-beta2 using [3H]nicotine
|
Rattus norvegicus
|
0.06
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : 3,5-Bicyclic aryl piperidines: a novel class of alpha4beta2 neuronal nicotinic receptor partial agonists for smoking cessation.
Year : 2005
Volume : 15
Issue : 22
First Page : 4889
Last Page : 4897
Authors : Coe JW, Brooks PR, Wirtz MC, Bashore CG, Bianco KE, Vetelino MG, Arnold EP, Lebel LA, Fox CB, Tingley FD, Schulz DW, Davis TI, Sands SB, Mansbach RS, Rollema H, O'Neill BT.
Abstract : 3,5-Bicyclic aryl piperidines are a new class of high-affinity alpha4beta2 nicotinic receptor agents. We have sought nicotinic receptor partial agonists of the alpha4beta2 nicotinic acetylcholine receptor for smoking cessation, and a number of compounds fulfill potency, selectivity, and efficacy requirements in vitro. In vivo, selected agents demonstrate potent partial agonist efficacy on the mesolimbic dopamine system, a key measure of therapeutic potential for smoking cessation.
|
Binding affinity for human Nicotinic acetylcholine receptor alpha4-beta2 expressed in HEK 293 cells using [3H]nicotine
|
Homo sapiens
|
0.11
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : 3,5-Bicyclic aryl piperidines: a novel class of alpha4beta2 neuronal nicotinic receptor partial agonists for smoking cessation.
Year : 2005
Volume : 15
Issue : 22
First Page : 4889
Last Page : 4897
Authors : Coe JW, Brooks PR, Wirtz MC, Bashore CG, Bianco KE, Vetelino MG, Arnold EP, Lebel LA, Fox CB, Tingley FD, Schulz DW, Davis TI, Sands SB, Mansbach RS, Rollema H, O'Neill BT.
Abstract : 3,5-Bicyclic aryl piperidines are a new class of high-affinity alpha4beta2 nicotinic receptor agents. We have sought nicotinic receptor partial agonists of the alpha4beta2 nicotinic acetylcholine receptor for smoking cessation, and a number of compounds fulfill potency, selectivity, and efficacy requirements in vitro. In vivo, selected agents demonstrate potent partial agonist efficacy on the mesolimbic dopamine system, a key measure of therapeutic potential for smoking cessation.
|
Binding affinity to human Nicotinic acetylcholine receptor alpha4-beta2 expressed in IMR32 cells using [3H]epibatidine
|
Homo sapiens
|
240.0
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : 3,5-Bicyclic aryl piperidines: a novel class of alpha4beta2 neuronal nicotinic receptor partial agonists for smoking cessation.
Year : 2005
Volume : 15
Issue : 22
First Page : 4889
Last Page : 4897
Authors : Coe JW, Brooks PR, Wirtz MC, Bashore CG, Bianco KE, Vetelino MG, Arnold EP, Lebel LA, Fox CB, Tingley FD, Schulz DW, Davis TI, Sands SB, Mansbach RS, Rollema H, O'Neill BT.
Abstract : 3,5-Bicyclic aryl piperidines are a new class of high-affinity alpha4beta2 nicotinic receptor agents. We have sought nicotinic receptor partial agonists of the alpha4beta2 nicotinic acetylcholine receptor for smoking cessation, and a number of compounds fulfill potency, selectivity, and efficacy requirements in vitro. In vivo, selected agents demonstrate potent partial agonist efficacy on the mesolimbic dopamine system, a key measure of therapeutic potential for smoking cessation.
|
Binding affinity to human Nicotinic acetylcholine receptor alpha4-beta2 expressed in IMR32 cells using [3H]alpha-bungarotoxin
|
Homo sapiens
|
617.0
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : 3,5-Bicyclic aryl piperidines: a novel class of alpha4beta2 neuronal nicotinic receptor partial agonists for smoking cessation.
Year : 2005
Volume : 15
Issue : 22
First Page : 4889
Last Page : 4897
Authors : Coe JW, Brooks PR, Wirtz MC, Bashore CG, Bianco KE, Vetelino MG, Arnold EP, Lebel LA, Fox CB, Tingley FD, Schulz DW, Davis TI, Sands SB, Mansbach RS, Rollema H, O'Neill BT.
Abstract : 3,5-Bicyclic aryl piperidines are a new class of high-affinity alpha4beta2 nicotinic receptor agents. We have sought nicotinic receptor partial agonists of the alpha4beta2 nicotinic acetylcholine receptor for smoking cessation, and a number of compounds fulfill potency, selectivity, and efficacy requirements in vitro. In vivo, selected agents demonstrate potent partial agonist efficacy on the mesolimbic dopamine system, a key measure of therapeutic potential for smoking cessation.
|
Percent inhibition against 10 uM nicotine binding to human Nicotinic acetylcholine receptor alpha4-beta2 expressed in Xenopus oocytes at 10 uM
|
Homo sapiens
|
32.0
%
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : 3,5-Bicyclic aryl piperidines: a novel class of alpha4beta2 neuronal nicotinic receptor partial agonists for smoking cessation.
Year : 2005
Volume : 15
Issue : 22
First Page : 4889
Last Page : 4897
Authors : Coe JW, Brooks PR, Wirtz MC, Bashore CG, Bianco KE, Vetelino MG, Arnold EP, Lebel LA, Fox CB, Tingley FD, Schulz DW, Davis TI, Sands SB, Mansbach RS, Rollema H, O'Neill BT.
Abstract : 3,5-Bicyclic aryl piperidines are a new class of high-affinity alpha4beta2 nicotinic receptor agents. We have sought nicotinic receptor partial agonists of the alpha4beta2 nicotinic acetylcholine receptor for smoking cessation, and a number of compounds fulfill potency, selectivity, and efficacy requirements in vitro. In vivo, selected agents demonstrate potent partial agonist efficacy on the mesolimbic dopamine system, a key measure of therapeutic potential for smoking cessation.
|
Displacement of [3H]epibatidine from alpha-4-beta-2 nAChR in rat cerebral cortex
|
Rattus norvegicus
|
0.12
nM
|
|
Journal : Bioorg. Med. Chem.
Title : Synthesis, nicotinic acetylcholine receptor binding, and pharmacological properties of 3'-(substituted phenyl)deschloroepibatidine analogs.
Year : 2008
Volume : 16
Issue : 2
First Page : 746
Last Page : 754
Authors : Ivy Carroll F, Yokota Y, Ma W, Lee JR, Brieaddy LE, Burgess JP, Navarro HA, Damaj MI, Martin BR.
Abstract : A series of 3'-(substituted phenyl)deschloroepibatidine analogs (5a-j) were synthesized. The alpha4beta2( *) and alpha7 nicotinic acetylcholine receptor (nAChR) binding properties and functional activity in the tail-flick, hot-plate, locomotor, and body temperature tests in mice of 5a-j were compared to those of the nAChR agonist, nicotine (1), epibatidine (4), and deschloroepibatidine (13), the partial agonist, varenicline (3), and the antagonist 2'-fluoro-3'-(substituted phenyl)deschloroepibatidine analogs (7a-j). Unlike epibatidine and deschloroepibatidine, which are potent agonists in the tail-flick test, 5a-k show no or very low antinociceptive activity in the tail-flick or hot-plate test. However, they are potent antagonists in nicotine-induced antinociception in the tail-flick test, but weaker than the corresponding 2'-fluoro-3'-(substituted phenyl)deschloroepibatidines.
|
Displacement of [125I]iodoMLA from alpha-7 nAChR in rat cerebral cortex
|
Rattus norvegicus
|
32.5
nM
|
|
Journal : Bioorg. Med. Chem.
Title : Synthesis, nicotinic acetylcholine receptor binding, and pharmacological properties of 3'-(substituted phenyl)deschloroepibatidine analogs.
Year : 2008
Volume : 16
Issue : 2
First Page : 746
Last Page : 754
Authors : Ivy Carroll F, Yokota Y, Ma W, Lee JR, Brieaddy LE, Burgess JP, Navarro HA, Damaj MI, Martin BR.
Abstract : A series of 3'-(substituted phenyl)deschloroepibatidine analogs (5a-j) were synthesized. The alpha4beta2( *) and alpha7 nicotinic acetylcholine receptor (nAChR) binding properties and functional activity in the tail-flick, hot-plate, locomotor, and body temperature tests in mice of 5a-j were compared to those of the nAChR agonist, nicotine (1), epibatidine (4), and deschloroepibatidine (13), the partial agonist, varenicline (3), and the antagonist 2'-fluoro-3'-(substituted phenyl)deschloroepibatidine analogs (7a-j). Unlike epibatidine and deschloroepibatidine, which are potent agonists in the tail-flick test, 5a-k show no or very low antinociceptive activity in the tail-flick or hot-plate test. However, they are potent antagonists in nicotine-induced antinociception in the tail-flick test, but weaker than the corresponding 2'-fluoro-3'-(substituted phenyl)deschloroepibatidines.
|
Displacement of [3H]epibatidine from alpha4beta2 nicotinic receptor expressed in human HEK293 cells
|
None
|
0.295
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : A novel series of [3.2.1] azabicyclic biaryl ethers as alpha3beta4 and alpha6/4beta4 nicotinic receptor agonists.
Year : 2010
Volume : 20
Issue : 16
First Page : 4749
Last Page : 4752
Authors : Lowe JA, DeNinno SL, Coe JW, Zhang L, Mente S, Hurst RS, Mather RJ, Ward KM, Shrikhande A, Rollema H, Johnson DE, Horner W, Gorczyca R, Tingley FD, Kozak R, Majchrzak MJ, Tritto T, Sadlier J, Shaffer CL, Ellerbrock B, Osgood SM, MacDougall MC, McDowell LL.
Abstract : We report the synthesis of a series of [3.2.1]azabicyclic biaryl ethers as selective agonists of alpha3- and alpha6-containing nicotinic receptors. In particular, compound 17a from this series is a potent alpha3beta4 and alpha6/4beta4 receptor agonist in terms of both binding and functional activity. Compound 17a also shows potent in vivo activity in CNS-mediated animal models that are sensitive to antipsychotic drugs. Compound 17a may thus be a useful tool for studying the role of alpha3beta4 and alpha6/4beta4 nicotinic receptors in CNS pharmacology.
|
Displacement of [3H]epibatidine from alpha3beta4 nicotinic receptor expressed in human HEK293 cells
|
None
|
74.7
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : A novel series of [3.2.1] azabicyclic biaryl ethers as alpha3beta4 and alpha6/4beta4 nicotinic receptor agonists.
Year : 2010
Volume : 20
Issue : 16
First Page : 4749
Last Page : 4752
Authors : Lowe JA, DeNinno SL, Coe JW, Zhang L, Mente S, Hurst RS, Mather RJ, Ward KM, Shrikhande A, Rollema H, Johnson DE, Horner W, Gorczyca R, Tingley FD, Kozak R, Majchrzak MJ, Tritto T, Sadlier J, Shaffer CL, Ellerbrock B, Osgood SM, MacDougall MC, McDowell LL.
Abstract : We report the synthesis of a series of [3.2.1]azabicyclic biaryl ethers as selective agonists of alpha3- and alpha6-containing nicotinic receptors. In particular, compound 17a from this series is a potent alpha3beta4 and alpha6/4beta4 receptor agonist in terms of both binding and functional activity. Compound 17a also shows potent in vivo activity in CNS-mediated animal models that are sensitive to antipsychotic drugs. Compound 17a may thus be a useful tool for studying the role of alpha3beta4 and alpha6/4beta4 nicotinic receptors in CNS pharmacology.
|
Displacement of [3H]epibatidine from alpha6/4beta4 nicotinic receptor expressed in human HEK293 cells
|
None
|
89.0
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : A novel series of [3.2.1] azabicyclic biaryl ethers as alpha3beta4 and alpha6/4beta4 nicotinic receptor agonists.
Year : 2010
Volume : 20
Issue : 16
First Page : 4749
Last Page : 4752
Authors : Lowe JA, DeNinno SL, Coe JW, Zhang L, Mente S, Hurst RS, Mather RJ, Ward KM, Shrikhande A, Rollema H, Johnson DE, Horner W, Gorczyca R, Tingley FD, Kozak R, Majchrzak MJ, Tritto T, Sadlier J, Shaffer CL, Ellerbrock B, Osgood SM, MacDougall MC, McDowell LL.
Abstract : We report the synthesis of a series of [3.2.1]azabicyclic biaryl ethers as selective agonists of alpha3- and alpha6-containing nicotinic receptors. In particular, compound 17a from this series is a potent alpha3beta4 and alpha6/4beta4 receptor agonist in terms of both binding and functional activity. Compound 17a also shows potent in vivo activity in CNS-mediated animal models that are sensitive to antipsychotic drugs. Compound 17a may thus be a useful tool for studying the role of alpha3beta4 and alpha6/4beta4 nicotinic receptors in CNS pharmacology.
|
Displacement of [3H]epibatidine from alpha7 nicotinic receptor expressed in human HEK293 cells
|
None
|
125.0
nM
|
|
Journal : Bioorg. Med. Chem. Lett.
Title : A novel series of [3.2.1] azabicyclic biaryl ethers as alpha3beta4 and alpha6/4beta4 nicotinic receptor agonists.
Year : 2010
Volume : 20
Issue : 16
First Page : 4749
Last Page : 4752
Authors : Lowe JA, DeNinno SL, Coe JW, Zhang L, Mente S, Hurst RS, Mather RJ, Ward KM, Shrikhande A, Rollema H, Johnson DE, Horner W, Gorczyca R, Tingley FD, Kozak R, Majchrzak MJ, Tritto T, Sadlier J, Shaffer CL, Ellerbrock B, Osgood SM, MacDougall MC, McDowell LL.
Abstract : We report the synthesis of a series of [3.2.1]azabicyclic biaryl ethers as selective agonists of alpha3- and alpha6-containing nicotinic receptors. In particular, compound 17a from this series is a potent alpha3beta4 and alpha6/4beta4 receptor agonist in terms of both binding and functional activity. Compound 17a also shows potent in vivo activity in CNS-mediated animal models that are sensitive to antipsychotic drugs. Compound 17a may thus be a useful tool for studying the role of alpha3beta4 and alpha6/4beta4 nicotinic receptors in CNS pharmacology.
|
Agonist activity at rat alpha6beta2 nAChR assessed as [3H]dopamine release by beta counting
|
Rattus norvegicus
|
46.0
nM
|
|
Journal : J. Med. Chem.
Title : Unichiral 2-(2'-pyrrolidinyl)-1,4-benzodioxanes: the 2R,2'S diastereomer of the N-methyl-7-hydroxy analogue is a potent α4β2- and α6β2-nicotinic acetylcholine receptor partial agonist.
Year : 2011
Volume : 54
Issue : 21
First Page : 7588
Last Page : 7601
Authors : Bolchi C, Gotti C, Binda M, Fumagalli L, Pucci L, Pistillo F, Vistoli G, Valoti E, Pallavicini M.
Abstract : A series of unichiral 7-substituted 2-(1'-methyl-2'-pyrrolidinyl)-1,4-benzodioxanes were synthesized and tested for the affinity for the α4β2 and α7 central nicotinic receptors; the 2R,2'S diastereomer of the 7-OH analogue [(R,S)-7], unique in the series, has a high α4β2 affinity (12nM K(i)). N-Demethylation and configuration inversion of the stereocenters greatly weaken its α4β2 affinity, confirming that such a rigid molecule can be considered a new template for α4β2 ligands. Docking analysis showed how (R,S)-7 is capable of strongly and specifically interacting with the amino acidic counterpart of the α4β2 receptor binding site. Further pharmacological characterization demonstrated that (R,S)-7 also has a high affinity for the α6β2 receptor, and in vitro functional tests indicated that it is a potent α4β2 and α6β2 partial agonist, with modest affinity and potency for the α3β4 receptor. Comparison with varenicline, a well-known nicotinic partial agonist used as a smoking cessation aid, interestingly reveals similar nicotinoid profiles.
|
Agonist activity at rat alpha4beta2 nAChR assessed as [3H]dopamine release by beta counting
|
Rattus norvegicus
|
46.0
nM
|
|
Journal : J. Med. Chem.
Title : Unichiral 2-(2'-pyrrolidinyl)-1,4-benzodioxanes: the 2R,2'S diastereomer of the N-methyl-7-hydroxy analogue is a potent α4β2- and α6β2-nicotinic acetylcholine receptor partial agonist.
Year : 2011
Volume : 54
Issue : 21
First Page : 7588
Last Page : 7601
Authors : Bolchi C, Gotti C, Binda M, Fumagalli L, Pucci L, Pistillo F, Vistoli G, Valoti E, Pallavicini M.
Abstract : A series of unichiral 7-substituted 2-(1'-methyl-2'-pyrrolidinyl)-1,4-benzodioxanes were synthesized and tested for the affinity for the α4β2 and α7 central nicotinic receptors; the 2R,2'S diastereomer of the 7-OH analogue [(R,S)-7], unique in the series, has a high α4β2 affinity (12nM K(i)). N-Demethylation and configuration inversion of the stereocenters greatly weaken its α4β2 affinity, confirming that such a rigid molecule can be considered a new template for α4β2 ligands. Docking analysis showed how (R,S)-7 is capable of strongly and specifically interacting with the amino acidic counterpart of the α4β2 receptor binding site. Further pharmacological characterization demonstrated that (R,S)-7 also has a high affinity for the α6β2 receptor, and in vitro functional tests indicated that it is a potent α4β2 and α6β2 partial agonist, with modest affinity and potency for the α3β4 receptor. Comparison with varenicline, a well-known nicotinic partial agonist used as a smoking cessation aid, interestingly reveals similar nicotinoid profiles.
|
Partial agonist activity at alpha4beta 2 nAChR
|
Homo sapiens
|
0.06
nM
|
|
Journal : J. Med. Chem.
Title : Synthesis and nicotinic receptor activity of chemical space analogues of N-(3R)-1-azabicyclo[2.2.2]oct-3-yl-4-chlorobenzamide (PNU-282,987) and 1,4-diazabicyclo[3.2.2]nonane-4-carboxylic acid 4-bromophenyl ester (SSR180711).
Year : 2012
Volume : 55
Issue : 10
First Page : 4605
Last Page : 4618
Authors : Bréthous L, Garcia-Delgado N, Schwartz J, Bertrand S, Bertrand D, Reymond JL.
Abstract : The Chemical Universe Generated Databases up to 11 atoms of CNOF (GDB-11) and up to 13 atoms of CNOClS (GDB-13) were used to enumerate analogues of the diamine part of two known α7 nicotinic receptor agonists and construct libraries of virtual analogues of these drugs. The libraries were scored using structure-based (docking to the nicotine binding site of the acetylcholine binding protein 1uw6.pdb) or ligand-based (similarity to the parent drugs) methods, and the top-scoring virtual ligands were inspected for easily accessible synthetic targets. In total, 21 diamines were prepared and acylated with aromatic carboxylic or oxycarbonic acids to produce 85 analogues of the parent drugs. The compounds were profiled by electrophysiology in Xenopus oocytes expressing human nicotinic acetylcholine receptor (nAChR) subtypes α7, α3β2, α4β2, α3β4, or α4β4. Characterization of selected compounds revealed eight inhibitors of the α7 nicotinic receptor and three positive allosteric modulators of the α3β2 nAChR.
|
Binding affinity to rat alpha7 nACHR at 10 uM
|
Rattus norvegicus
|
125.0
nM
|
|
Journal : J. Med. Chem.
Title : Identification of novel α4β2-nicotinic acetylcholine receptor (nAChR) agonists based on an isoxazole ether scaffold that demonstrate antidepressant-like activity.
Year : 2012
Volume : 55
Issue : 2
First Page : 812
Last Page : 823
Authors : Yu LF, Tückmantel W, Eaton JB, Caldarone B, Fedolak A, Hanania T, Brunner D, Lukas RJ, Kozikowski AP.
Abstract : There is considerable evidence to support the hypothesis that the blockade of nAChR is responsible for the antidepressant action of nicotinic ligands. The nicotinic acetylcholine receptor (nAChR) antagonist, mecamylamine, has been shown to be an effective add-on in patients that do not respond to selective serotonin reuptake inhibitors. This suggests that nAChR ligands may address an unmet clinical need by providing relief from depressive symptoms in refractory patients. In this study, a new series of nAChR ligands based on an isoxazole-ether scaffold have been designed and synthesized for binding and functional assays. Preliminary structure-activity relationship (SAR) efforts identified a lead compound 43, which possesses potent antidepressant-like activity (1 mg/kg, IP; 5 mg/kg, PO) in the classical mouse forced swim test. Early stage absorption, distribution, metabolism, excretion, and toxicity (ADME-Tox) studies also suggested favorable drug-like properties, and broad screening toward other common neurotransmitter receptors indicated that compound 43 is highly selective for nAChRs over the other 45 neurotransmitter receptors and transporters tested.
|
Antagonist activity at rat alpha4beta2 nAChR expressed in Xenopus laevis oocytes assessed as inhibition of acetylcholine-induced response at 100 uM after 2 to 6 days by two electrode voltage clamp assay
|
Rattus norvegicus
|
38.0
%
|
|
Journal : J. Med. Chem.
Title : Synthesis and nicotinic acetylcholine receptor in vitro and in vivo pharmacological properties of 2'-fluoro-3'-(substituted phenyl)deschloroepibatidine analogues of 2'-fluoro-3'-(4-nitrophenyl)deschloroepibatidine.
Year : 2012
Volume : 55
Issue : 14
First Page : 6512
Last Page : 6522
Authors : Ondachi P, Castro A, Luetje CW, Damaj MI, Mascarella SW, Navarro HA, Carroll FI.
Abstract : Herein, we report the synthesis and nicotinic acetylcholine receptor (nAChR) in vitro and in vivo pharmacological properties of 2'-fluoro-3'-(substituted phenyl)deschloroepibatidines 5b-g, analogues of 3'-(4-nitrophenyl) compound 5a. All compounds had high affinity for α4β2-nAChR and low affinity for α7-nAChR. Initial electrophysiological studies showed that all analogues were antagonists at α4β2-, α3β4-, and α7-nAChRs. The 4-carbamoylphenyl analogue 5g was highly selective for α4β2-nAChR over α3β4- and α7-nAChRs. All the analogues were antagonists of nicotine-induced antinociception in the tail-flick test. Molecular modeling docking studies using the agonist-bound form of the X-ray crystal structure of the acetylcholine binding protein suggested several different binding modes for epibatidine, varenicline, and 5a-g. In particular, a unique binding mode for 5g was suggested by these docking simulations. The high binding affinity, in vitro efficacy, and selectivity of 5g for α4β2-nAChR combined with its nAChR functional antagonist properties suggest that 5g will be a valuable pharmacological tool for studying the nAChR and may have potential as a pharmacotherapy for addiction and other central nervous system disorders.
|
Displacement of [125I]iodoMLA from rat cerebral cortex alpha7 nAChR at 50 nM incubated for 2 hrs by microplate scintillation assay
|
Rattus norvegicus
|
32.5
nM
|
|
Journal : J. Med. Chem.
Title : Synthesis and nicotinic acetylcholine receptor in vitro and in vivo pharmacological properties of 2'-fluoro-3'-(substituted phenyl)deschloroepibatidine analogues of 2'-fluoro-3'-(4-nitrophenyl)deschloroepibatidine.
Year : 2012
Volume : 55
Issue : 14
First Page : 6512
Last Page : 6522
Authors : Ondachi P, Castro A, Luetje CW, Damaj MI, Mascarella SW, Navarro HA, Carroll FI.
Abstract : Herein, we report the synthesis and nicotinic acetylcholine receptor (nAChR) in vitro and in vivo pharmacological properties of 2'-fluoro-3'-(substituted phenyl)deschloroepibatidines 5b-g, analogues of 3'-(4-nitrophenyl) compound 5a. All compounds had high affinity for α4β2-nAChR and low affinity for α7-nAChR. Initial electrophysiological studies showed that all analogues were antagonists at α4β2-, α3β4-, and α7-nAChRs. The 4-carbamoylphenyl analogue 5g was highly selective for α4β2-nAChR over α3β4- and α7-nAChRs. All the analogues were antagonists of nicotine-induced antinociception in the tail-flick test. Molecular modeling docking studies using the agonist-bound form of the X-ray crystal structure of the acetylcholine binding protein suggested several different binding modes for epibatidine, varenicline, and 5a-g. In particular, a unique binding mode for 5g was suggested by these docking simulations. The high binding affinity, in vitro efficacy, and selectivity of 5g for α4β2-nAChR combined with its nAChR functional antagonist properties suggest that 5g will be a valuable pharmacological tool for studying the nAChR and may have potential as a pharmacotherapy for addiction and other central nervous system disorders.
|
Displacement of [3H]epibatidine from rat cerebral cortex alpha4beta2* nAChR incubated for 4 hrs by liquid scintillation assay
|
Rattus norvegicus
|
0.12
nM
|
|
Journal : J. Med. Chem.
Title : Synthesis and nicotinic acetylcholine receptor in vitro and in vivo pharmacological properties of 2'-fluoro-3'-(substituted phenyl)deschloroepibatidine analogues of 2'-fluoro-3'-(4-nitrophenyl)deschloroepibatidine.
Year : 2012
Volume : 55
Issue : 14
First Page : 6512
Last Page : 6522
Authors : Ondachi P, Castro A, Luetje CW, Damaj MI, Mascarella SW, Navarro HA, Carroll FI.
Abstract : Herein, we report the synthesis and nicotinic acetylcholine receptor (nAChR) in vitro and in vivo pharmacological properties of 2'-fluoro-3'-(substituted phenyl)deschloroepibatidines 5b-g, analogues of 3'-(4-nitrophenyl) compound 5a. All compounds had high affinity for α4β2-nAChR and low affinity for α7-nAChR. Initial electrophysiological studies showed that all analogues were antagonists at α4β2-, α3β4-, and α7-nAChRs. The 4-carbamoylphenyl analogue 5g was highly selective for α4β2-nAChR over α3β4- and α7-nAChRs. All the analogues were antagonists of nicotine-induced antinociception in the tail-flick test. Molecular modeling docking studies using the agonist-bound form of the X-ray crystal structure of the acetylcholine binding protein suggested several different binding modes for epibatidine, varenicline, and 5a-g. In particular, a unique binding mode for 5g was suggested by these docking simulations. The high binding affinity, in vitro efficacy, and selectivity of 5g for α4β2-nAChR combined with its nAChR functional antagonist properties suggest that 5g will be a valuable pharmacological tool for studying the nAChR and may have potential as a pharmacotherapy for addiction and other central nervous system disorders.
|
Inhibition of human liver OATP1B1 expressed in HEK293 Flp-In cells assessed as reduction in E17-betaG uptake at 20 uM by scintillation counting
|
Homo sapiens
|
24.7
%
|
|
Journal : J. Med. Chem.
Title : Classification of inhibitors of hepatic organic anion transporting polypeptides (OATPs): influence of protein expression on drug-drug interactions.
Year : 2012
Volume : 55
Issue : 10
First Page : 4740
Last Page : 4763
Authors : Karlgren M, Vildhede A, Norinder U, Wisniewski JR, Kimoto E, Lai Y, Haglund U, Artursson P.
Abstract : The hepatic organic anion transporting polypeptides (OATPs) influence the pharmacokinetics of several drug classes and are involved in many clinical drug-drug interactions. Predicting potential interactions with OATPs is, therefore, of value. Here, we developed in vitro and in silico models for identification and prediction of specific and general inhibitors of OATP1B1, OATP1B3, and OATP2B1. The maximal transport activity (MTA) of each OATP in human liver was predicted from transport kinetics and protein quantification. We then used MTA to predict the effects of a subset of inhibitors on atorvastatin uptake in vivo. Using a data set of 225 drug-like compounds, 91 OATP inhibitors were identified. In silico models indicated that lipophilicity and polar surface area are key molecular features of OATP inhibition. MTA predictions identified OATP1B1 and OATP1B3 as major determinants of atorvastatin uptake in vivo. The relative contributions to overall hepatic uptake varied with isoform specificities of the inhibitors.
|
Inhibition of human liver OATP1B3 expressed in HEK293 Flp-In cells assessed as reduction in [3H]E17-betaG uptake at 20 uM incubated for 5 mins by scintillation counting
|
Homo sapiens
|
0.8
%
|
|
Journal : J. Med. Chem.
Title : Classification of inhibitors of hepatic organic anion transporting polypeptides (OATPs): influence of protein expression on drug-drug interactions.
Year : 2012
Volume : 55
Issue : 10
First Page : 4740
Last Page : 4763
Authors : Karlgren M, Vildhede A, Norinder U, Wisniewski JR, Kimoto E, Lai Y, Haglund U, Artursson P.
Abstract : The hepatic organic anion transporting polypeptides (OATPs) influence the pharmacokinetics of several drug classes and are involved in many clinical drug-drug interactions. Predicting potential interactions with OATPs is, therefore, of value. Here, we developed in vitro and in silico models for identification and prediction of specific and general inhibitors of OATP1B1, OATP1B3, and OATP2B1. The maximal transport activity (MTA) of each OATP in human liver was predicted from transport kinetics and protein quantification. We then used MTA to predict the effects of a subset of inhibitors on atorvastatin uptake in vivo. Using a data set of 225 drug-like compounds, 91 OATP inhibitors were identified. In silico models indicated that lipophilicity and polar surface area are key molecular features of OATP inhibition. MTA predictions identified OATP1B1 and OATP1B3 as major determinants of atorvastatin uptake in vivo. The relative contributions to overall hepatic uptake varied with isoform specificities of the inhibitors.
|
Inhibition of human liver OATP2B1 expressed in HEK293 Flp-In cells assessed as reduction in [3H]E3S uptake at 20 uM incubated for 5 mins by scintillation counting
|
Homo sapiens
|
27.3
%
|
|
Journal : J. Med. Chem.
Title : Classification of inhibitors of hepatic organic anion transporting polypeptides (OATPs): influence of protein expression on drug-drug interactions.
Year : 2012
Volume : 55
Issue : 10
First Page : 4740
Last Page : 4763
Authors : Karlgren M, Vildhede A, Norinder U, Wisniewski JR, Kimoto E, Lai Y, Haglund U, Artursson P.
Abstract : The hepatic organic anion transporting polypeptides (OATPs) influence the pharmacokinetics of several drug classes and are involved in many clinical drug-drug interactions. Predicting potential interactions with OATPs is, therefore, of value. Here, we developed in vitro and in silico models for identification and prediction of specific and general inhibitors of OATP1B1, OATP1B3, and OATP2B1. The maximal transport activity (MTA) of each OATP in human liver was predicted from transport kinetics and protein quantification. We then used MTA to predict the effects of a subset of inhibitors on atorvastatin uptake in vivo. Using a data set of 225 drug-like compounds, 91 OATP inhibitors were identified. In silico models indicated that lipophilicity and polar surface area are key molecular features of OATP inhibition. MTA predictions identified OATP1B1 and OATP1B3 as major determinants of atorvastatin uptake in vivo. The relative contributions to overall hepatic uptake varied with isoform specificities of the inhibitors.
|
Displacement of [3H]epibatidine from rat alpha3beta4 nACHR
|
Rattus norvegicus
|
86.0
nM
|
|
Journal : J. Med. Chem.
Title : Identification of novel α4β2-nicotinic acetylcholine receptor (nAChR) agonists based on an isoxazole ether scaffold that demonstrate antidepressant-like activity.
Year : 2012
Volume : 55
Issue : 2
First Page : 812
Last Page : 823
Authors : Yu LF, Tückmantel W, Eaton JB, Caldarone B, Fedolak A, Hanania T, Brunner D, Lukas RJ, Kozikowski AP.
Abstract : There is considerable evidence to support the hypothesis that the blockade of nAChR is responsible for the antidepressant action of nicotinic ligands. The nicotinic acetylcholine receptor (nAChR) antagonist, mecamylamine, has been shown to be an effective add-on in patients that do not respond to selective serotonin reuptake inhibitors. This suggests that nAChR ligands may address an unmet clinical need by providing relief from depressive symptoms in refractory patients. In this study, a new series of nAChR ligands based on an isoxazole-ether scaffold have been designed and synthesized for binding and functional assays. Preliminary structure-activity relationship (SAR) efforts identified a lead compound 43, which possesses potent antidepressant-like activity (1 mg/kg, IP; 5 mg/kg, PO) in the classical mouse forced swim test. Early stage absorption, distribution, metabolism, excretion, and toxicity (ADME-Tox) studies also suggested favorable drug-like properties, and broad screening toward other common neurotransmitter receptors indicated that compound 43 is highly selective for nAChRs over the other 45 neurotransmitter receptors and transporters tested.
|
Displacement of [3H]epibatidine from rat alpha4beta2 nACHR
|
Rattus norvegicus
|
0.05
nM
|
|
Journal : J. Med. Chem.
Title : Identification of novel α4β2-nicotinic acetylcholine receptor (nAChR) agonists based on an isoxazole ether scaffold that demonstrate antidepressant-like activity.
Year : 2012
Volume : 55
Issue : 2
First Page : 812
Last Page : 823
Authors : Yu LF, Tückmantel W, Eaton JB, Caldarone B, Fedolak A, Hanania T, Brunner D, Lukas RJ, Kozikowski AP.
Abstract : There is considerable evidence to support the hypothesis that the blockade of nAChR is responsible for the antidepressant action of nicotinic ligands. The nicotinic acetylcholine receptor (nAChR) antagonist, mecamylamine, has been shown to be an effective add-on in patients that do not respond to selective serotonin reuptake inhibitors. This suggests that nAChR ligands may address an unmet clinical need by providing relief from depressive symptoms in refractory patients. In this study, a new series of nAChR ligands based on an isoxazole-ether scaffold have been designed and synthesized for binding and functional assays. Preliminary structure-activity relationship (SAR) efforts identified a lead compound 43, which possesses potent antidepressant-like activity (1 mg/kg, IP; 5 mg/kg, PO) in the classical mouse forced swim test. Early stage absorption, distribution, metabolism, excretion, and toxicity (ADME-Tox) studies also suggested favorable drug-like properties, and broad screening toward other common neurotransmitter receptors indicated that compound 43 is highly selective for nAChRs over the other 45 neurotransmitter receptors and transporters tested.
|
Displacement of [3H]epibatidine from rat alpha4beta4 nACHR
|
Rattus norvegicus
|
110.0
nM
|
|
Journal : J. Med. Chem.
Title : Identification of novel α4β2-nicotinic acetylcholine receptor (nAChR) agonists based on an isoxazole ether scaffold that demonstrate antidepressant-like activity.
Year : 2012
Volume : 55
Issue : 2
First Page : 812
Last Page : 823
Authors : Yu LF, Tückmantel W, Eaton JB, Caldarone B, Fedolak A, Hanania T, Brunner D, Lukas RJ, Kozikowski AP.
Abstract : There is considerable evidence to support the hypothesis that the blockade of nAChR is responsible for the antidepressant action of nicotinic ligands. The nicotinic acetylcholine receptor (nAChR) antagonist, mecamylamine, has been shown to be an effective add-on in patients that do not respond to selective serotonin reuptake inhibitors. This suggests that nAChR ligands may address an unmet clinical need by providing relief from depressive symptoms in refractory patients. In this study, a new series of nAChR ligands based on an isoxazole-ether scaffold have been designed and synthesized for binding and functional assays. Preliminary structure-activity relationship (SAR) efforts identified a lead compound 43, which possesses potent antidepressant-like activity (1 mg/kg, IP; 5 mg/kg, PO) in the classical mouse forced swim test. Early stage absorption, distribution, metabolism, excretion, and toxicity (ADME-Tox) studies also suggested favorable drug-like properties, and broad screening toward other common neurotransmitter receptors indicated that compound 43 is highly selective for nAChRs over the other 45 neurotransmitter receptors and transporters tested.
|
Inhibition of human alpha4beta2 nACHR expressed in SH-EP1 cells by 86Rb+ efflux assay
|
Homo sapiens
|
110.0
nM
|
|
Journal : J. Med. Chem.
Title : Identification of novel α4β2-nicotinic acetylcholine receptor (nAChR) agonists based on an isoxazole ether scaffold that demonstrate antidepressant-like activity.
Year : 2012
Volume : 55
Issue : 2
First Page : 812
Last Page : 823
Authors : Yu LF, Tückmantel W, Eaton JB, Caldarone B, Fedolak A, Hanania T, Brunner D, Lukas RJ, Kozikowski AP.
Abstract : There is considerable evidence to support the hypothesis that the blockade of nAChR is responsible for the antidepressant action of nicotinic ligands. The nicotinic acetylcholine receptor (nAChR) antagonist, mecamylamine, has been shown to be an effective add-on in patients that do not respond to selective serotonin reuptake inhibitors. This suggests that nAChR ligands may address an unmet clinical need by providing relief from depressive symptoms in refractory patients. In this study, a new series of nAChR ligands based on an isoxazole-ether scaffold have been designed and synthesized for binding and functional assays. Preliminary structure-activity relationship (SAR) efforts identified a lead compound 43, which possesses potent antidepressant-like activity (1 mg/kg, IP; 5 mg/kg, PO) in the classical mouse forced swim test. Early stage absorption, distribution, metabolism, excretion, and toxicity (ADME-Tox) studies also suggested favorable drug-like properties, and broad screening toward other common neurotransmitter receptors indicated that compound 43 is highly selective for nAChRs over the other 45 neurotransmitter receptors and transporters tested.
|
Binding affinity to rat alpha7 nAChR expressed in Xenopus laevis oocytes
|
Rattus norvegicus
|
300.0
nM
|
|
Journal : J. Med. Chem.
Title : Structure-activity studies of 7-heteroaryl-3-azabicyclo[3.3.1]non-6-enes: a novel class of highly potent nicotinic receptor ligands.
Year : 2012
Volume : 55
Issue : 22
First Page : 9929
Last Page : 9945
Authors : Breining SR, Melvin M, Bhatti BS, Byrd GD, Kiser MN, Hepler CD, Hooker DN, Zhang J, Reynolds LA, Benson LR, Fedorov NB, Sidach SS, Mitchener JP, Lucero LM, Lukas RJ, Whiteaker P, Yohannes D.
Abstract : The potential for nicotinic ligands with affinity for the α4β2 or α7 subtypes to treat such diverse diseases as nicotine addiction, neuropathic pain, and neurodegenerative and cognitive disorders has been exhibited clinically for several compounds while preclinical activity in relevant in vivo models has been demonstrated for many more. For several therapeutic programs, we sought nicotinic ligands with various combinations of affinity and function across both subtypes, with an emphasis on dual α4β2-α7 ligands, to explore the possibility of synergistic effects. We report here the structure-activity relationships (SAR) for a novel series of 7-heteroaryl-3-azabicyclo[3.3.1]non-6-enes and characterize many of the analogues for activity at multiple nicotinic subtypes.
|
Antagonist activity at human alpha4beta2 nAChR expressed in human SH-EP1 cells assessed as inhibition of 86Rb+ efflux preincubated for 10 mins by liquid scintillation counting
|
Homo sapiens
|
38.9
nM
|
|
Antagonist activity at human alpha4beta2 nAChR expressed in human SH-EP1 cells assessed as inhibition of 86Rb+ efflux preincubated for 10 mins by liquid scintillation counting
|
Homo sapiens
|
39.0
nM
|
|
Journal : J. Med. Chem.
Title : Discovery of highly potent and selective α4β2-nicotinic acetylcholine receptor (nAChR) partial agonists containing an isoxazolylpyridine ether scaffold that demonstrate antidepressant-like activity. Part II.
Year : 2012
Volume : 55
Issue : 22
First Page : 9998
Last Page : 10009
Authors : Yu LF, Eaton JB, Fedolak A, Zhang HK, Hanania T, Brunner D, Lukas RJ, Kozikowski AP.
Abstract : In our continued efforts to develop α4β2-nicotinic acetylcholine receptor (nAChR) partial agonists as novel antidepressants having a unique mechanism of action, structure-activity relationship (SAR) exploration of certain isoxazolylpyridine ethers is presented. In particular, modifications to both the azetidine ring present in the starting structure 4 and its metabolically liable hydroxyl side chain substituent have been explored to improve compound druggability. The pharmacological characterization of all new compounds has been carried out using [(3)H]epibatidine binding studies together with functional assays based on (86)Rb(+) ion flux measurements. We found that the deletion of the metabolically liable hydroxyl group or its replacement by a fluoromethyl group not only maintained potency and selectivity but also resulted in compounds showing antidepressant-like properties in the mouse forced swim test. These isoxazolylpyridine ethers appear to represent promising lead candidates in the design of innovative chemical tools containing reporter groups for imaging purposes and of possible therapeutics.
|
Binding affinity to alpha4beta4 nAChR
|
None
|
110.0
nM
|
|
Journal : J. Med. Chem.
Title : Discovery of highly potent and selective α4β2-nicotinic acetylcholine receptor (nAChR) partial agonists containing an isoxazolylpyridine ether scaffold that demonstrate antidepressant-like activity. Part II.
Year : 2012
Volume : 55
Issue : 22
First Page : 9998
Last Page : 10009
Authors : Yu LF, Eaton JB, Fedolak A, Zhang HK, Hanania T, Brunner D, Lukas RJ, Kozikowski AP.
Abstract : In our continued efforts to develop α4β2-nicotinic acetylcholine receptor (nAChR) partial agonists as novel antidepressants having a unique mechanism of action, structure-activity relationship (SAR) exploration of certain isoxazolylpyridine ethers is presented. In particular, modifications to both the azetidine ring present in the starting structure 4 and its metabolically liable hydroxyl side chain substituent have been explored to improve compound druggability. The pharmacological characterization of all new compounds has been carried out using [(3)H]epibatidine binding studies together with functional assays based on (86)Rb(+) ion flux measurements. We found that the deletion of the metabolically liable hydroxyl group or its replacement by a fluoromethyl group not only maintained potency and selectivity but also resulted in compounds showing antidepressant-like properties in the mouse forced swim test. These isoxazolylpyridine ethers appear to represent promising lead candidates in the design of innovative chemical tools containing reporter groups for imaging purposes and of possible therapeutics.
|
Binding affinity to alpha4beta2 nAChR
|
None
|
0.4
nM
|
|
Journal : J. Med. Chem.
Title : Discovery of highly potent and selective α4β2-nicotinic acetylcholine receptor (nAChR) partial agonists containing an isoxazolylpyridine ether scaffold that demonstrate antidepressant-like activity. Part II.
Year : 2012
Volume : 55
Issue : 22
First Page : 9998
Last Page : 10009
Authors : Yu LF, Eaton JB, Fedolak A, Zhang HK, Hanania T, Brunner D, Lukas RJ, Kozikowski AP.
Abstract : In our continued efforts to develop α4β2-nicotinic acetylcholine receptor (nAChR) partial agonists as novel antidepressants having a unique mechanism of action, structure-activity relationship (SAR) exploration of certain isoxazolylpyridine ethers is presented. In particular, modifications to both the azetidine ring present in the starting structure 4 and its metabolically liable hydroxyl side chain substituent have been explored to improve compound druggability. The pharmacological characterization of all new compounds has been carried out using [(3)H]epibatidine binding studies together with functional assays based on (86)Rb(+) ion flux measurements. We found that the deletion of the metabolically liable hydroxyl group or its replacement by a fluoromethyl group not only maintained potency and selectivity but also resulted in compounds showing antidepressant-like properties in the mouse forced swim test. These isoxazolylpyridine ethers appear to represent promising lead candidates in the design of innovative chemical tools containing reporter groups for imaging purposes and of possible therapeutics.
|
Binding affinity to alpha3beta4 nAChR
|
None
|
86.0
nM
|
|
Journal : J. Med. Chem.
Title : Discovery of highly potent and selective α4β2-nicotinic acetylcholine receptor (nAChR) partial agonists containing an isoxazolylpyridine ether scaffold that demonstrate antidepressant-like activity. Part II.
Year : 2012
Volume : 55
Issue : 22
First Page : 9998
Last Page : 10009
Authors : Yu LF, Eaton JB, Fedolak A, Zhang HK, Hanania T, Brunner D, Lukas RJ, Kozikowski AP.
Abstract : In our continued efforts to develop α4β2-nicotinic acetylcholine receptor (nAChR) partial agonists as novel antidepressants having a unique mechanism of action, structure-activity relationship (SAR) exploration of certain isoxazolylpyridine ethers is presented. In particular, modifications to both the azetidine ring present in the starting structure 4 and its metabolically liable hydroxyl side chain substituent have been explored to improve compound druggability. The pharmacological characterization of all new compounds has been carried out using [(3)H]epibatidine binding studies together with functional assays based on (86)Rb(+) ion flux measurements. We found that the deletion of the metabolically liable hydroxyl group or its replacement by a fluoromethyl group not only maintained potency and selectivity but also resulted in compounds showing antidepressant-like properties in the mouse forced swim test. These isoxazolylpyridine ethers appear to represent promising lead candidates in the design of innovative chemical tools containing reporter groups for imaging purposes and of possible therapeutics.
|
Binding affinity to alpha4beta2 nAChR in rat cortex
|
Rattus norvegicus
|
0.06
nM
|
|
Journal : J. Med. Chem.
Title : Ion channels as therapeutic targets: a drug discovery perspective.
Year : 2013
Volume : 56
Issue : 3
First Page : 593
Last Page : 624
Authors : Bagal SK, Brown AD, Cox PJ, Omoto K, Owen RM, Pryde DC, Sidders B, Skerratt SE, Stevens EB, Storer RI, Swain NA.
Abstract : Ion channels are membrane proteins expressed in almost all living cells. The sequencing of the human genome has identified more than 400 putative ion channels, but only a fraction of these have been cloned and functionally tested. The widespread tissue distribution of ion channels, coupled with the plethora of physiological consequences of their opening and closing, makes ion-channel-targeted drug discovery highly compelling. However, despite some important drugs in clinical use today, as a class, ion channels remain underexploited in drug discovery and many existing drugs are poorly selective with significant toxicities or suboptimal efficacy. This Perspective seeks to review the ion channel family, its structural and functional features, and the diseases that are known to be modulated by members of the family. In particular, we will explore the structure and properties of known ligands and consider the future prospects for drug discovery in this challenging but high potential area.
|
Desensitization of human alpha4beta2 nACHR expressed in HEK293 cells assessed as inhibition of 86Rb+ efflux preincubated for 10 mins measured after 2 hrs by liquid scintillation counting analysis
|
Homo sapiens
|
94.0
nM
|
|
Journal : J. Med. Chem.
Title : Chemistry and pharmacological studies of 3-alkoxy-2,5-disubstituted-pyridinyl compounds as novel selective α4β2 nicotinic acetylcholine receptor ligands that reduce alcohol intake in rats.
Year : 2013
Volume : 56
Issue : 7
First Page : 3000
Last Page : 3011
Authors : Liu Y, Richardson J, Tran T, Al-Muhtasib N, Xie T, Yenugonda VM, Sexton HG, Rezvani AH, Levin ED, Sahibzada N, Kellar KJ, Brown ML, Xiao Y, Paige M.
Abstract : Neuronal acetylcholine receptors mediate the addictive effects of nicotine and may also be involved in alcohol addiction. Varenicline, an approved smoking cessation medication, showed clear efficacy in reducing alcohol consumption in heavy-drinking smokers. More recently, sazetidine-A, which selectively desensitizes α4β2 nicotinic receptors, was shown to significantly reduce alcohol intake in a rat model. To develop novel therapeutics for treating alcohol use disorder, we designed and synthesized novel sazetidine-A analogues containing a methyl group at the 2-position of the pyridine ring. In vitro pharmacological studies revealed that some of the novel compounds showed overall pharmacological property profiles similar to that of sazetidine-A but exhibited reduced agonist activity across all nicotinic receptor subtypes tested. In rat studies, compound (S)-9 significantly reduced alcohol uptake. More importantly, preliminary results from studies in a ferret model indicate that these novel nAChR ligands have an improved adverse side-effect profile in comparison with that of varenicline.
|
Agonist activity at human alpha4beta2 nACHR expressed in HEK293 cells assessed as stimulation of 86Rb+ efflux after 2 hrs by liquid scintillation counting analysis
|
Homo sapiens
|
950.0
nM
|
|
Journal : J. Med. Chem.
Title : Chemistry and pharmacological studies of 3-alkoxy-2,5-disubstituted-pyridinyl compounds as novel selective α4β2 nicotinic acetylcholine receptor ligands that reduce alcohol intake in rats.
Year : 2013
Volume : 56
Issue : 7
First Page : 3000
Last Page : 3011
Authors : Liu Y, Richardson J, Tran T, Al-Muhtasib N, Xie T, Yenugonda VM, Sexton HG, Rezvani AH, Levin ED, Sahibzada N, Kellar KJ, Brown ML, Xiao Y, Paige M.
Abstract : Neuronal acetylcholine receptors mediate the addictive effects of nicotine and may also be involved in alcohol addiction. Varenicline, an approved smoking cessation medication, showed clear efficacy in reducing alcohol consumption in heavy-drinking smokers. More recently, sazetidine-A, which selectively desensitizes α4β2 nicotinic receptors, was shown to significantly reduce alcohol intake in a rat model. To develop novel therapeutics for treating alcohol use disorder, we designed and synthesized novel sazetidine-A analogues containing a methyl group at the 2-position of the pyridine ring. In vitro pharmacological studies revealed that some of the novel compounds showed overall pharmacological property profiles similar to that of sazetidine-A but exhibited reduced agonist activity across all nicotinic receptor subtypes tested. In rat studies, compound (S)-9 significantly reduced alcohol uptake. More importantly, preliminary results from studies in a ferret model indicate that these novel nAChR ligands have an improved adverse side-effect profile in comparison with that of varenicline.
|
Displacement of [3H]-Epibatidine from rat alpha7 nACHR expressed in HEK293 cell membranes by liquid scintillation counting analysis
|
Rattus norvegicus
|
37.0
nM
|
|
Journal : J. Med. Chem.
Title : Chemistry and pharmacological studies of 3-alkoxy-2,5-disubstituted-pyridinyl compounds as novel selective α4β2 nicotinic acetylcholine receptor ligands that reduce alcohol intake in rats.
Year : 2013
Volume : 56
Issue : 7
First Page : 3000
Last Page : 3011
Authors : Liu Y, Richardson J, Tran T, Al-Muhtasib N, Xie T, Yenugonda VM, Sexton HG, Rezvani AH, Levin ED, Sahibzada N, Kellar KJ, Brown ML, Xiao Y, Paige M.
Abstract : Neuronal acetylcholine receptors mediate the addictive effects of nicotine and may also be involved in alcohol addiction. Varenicline, an approved smoking cessation medication, showed clear efficacy in reducing alcohol consumption in heavy-drinking smokers. More recently, sazetidine-A, which selectively desensitizes α4β2 nicotinic receptors, was shown to significantly reduce alcohol intake in a rat model. To develop novel therapeutics for treating alcohol use disorder, we designed and synthesized novel sazetidine-A analogues containing a methyl group at the 2-position of the pyridine ring. In vitro pharmacological studies revealed that some of the novel compounds showed overall pharmacological property profiles similar to that of sazetidine-A but exhibited reduced agonist activity across all nicotinic receptor subtypes tested. In rat studies, compound (S)-9 significantly reduced alcohol uptake. More importantly, preliminary results from studies in a ferret model indicate that these novel nAChR ligands have an improved adverse side-effect profile in comparison with that of varenicline.
|
Displacement of [3H]-Epibatidine from rat alpha4beta4 nACHR expressed in HEK293 cell membranes by liquid scintillation counting analysis
|
Rattus norvegicus
|
28.0
nM
|
|
Journal : J. Med. Chem.
Title : Chemistry and pharmacological studies of 3-alkoxy-2,5-disubstituted-pyridinyl compounds as novel selective α4β2 nicotinic acetylcholine receptor ligands that reduce alcohol intake in rats.
Year : 2013
Volume : 56
Issue : 7
First Page : 3000
Last Page : 3011
Authors : Liu Y, Richardson J, Tran T, Al-Muhtasib N, Xie T, Yenugonda VM, Sexton HG, Rezvani AH, Levin ED, Sahibzada N, Kellar KJ, Brown ML, Xiao Y, Paige M.
Abstract : Neuronal acetylcholine receptors mediate the addictive effects of nicotine and may also be involved in alcohol addiction. Varenicline, an approved smoking cessation medication, showed clear efficacy in reducing alcohol consumption in heavy-drinking smokers. More recently, sazetidine-A, which selectively desensitizes α4β2 nicotinic receptors, was shown to significantly reduce alcohol intake in a rat model. To develop novel therapeutics for treating alcohol use disorder, we designed and synthesized novel sazetidine-A analogues containing a methyl group at the 2-position of the pyridine ring. In vitro pharmacological studies revealed that some of the novel compounds showed overall pharmacological property profiles similar to that of sazetidine-A but exhibited reduced agonist activity across all nicotinic receptor subtypes tested. In rat studies, compound (S)-9 significantly reduced alcohol uptake. More importantly, preliminary results from studies in a ferret model indicate that these novel nAChR ligands have an improved adverse side-effect profile in comparison with that of varenicline.
|
Displacement of [3H]-Epibatidine from rat alpha4beta2 nACHR expressed in HEK293 cell membranes by liquid scintillation counting analysis
|
Rattus norvegicus
|
0.12
nM
|
|
Journal : J. Med. Chem.
Title : Chemistry and pharmacological studies of 3-alkoxy-2,5-disubstituted-pyridinyl compounds as novel selective α4β2 nicotinic acetylcholine receptor ligands that reduce alcohol intake in rats.
Year : 2013
Volume : 56
Issue : 7
First Page : 3000
Last Page : 3011
Authors : Liu Y, Richardson J, Tran T, Al-Muhtasib N, Xie T, Yenugonda VM, Sexton HG, Rezvani AH, Levin ED, Sahibzada N, Kellar KJ, Brown ML, Xiao Y, Paige M.
Abstract : Neuronal acetylcholine receptors mediate the addictive effects of nicotine and may also be involved in alcohol addiction. Varenicline, an approved smoking cessation medication, showed clear efficacy in reducing alcohol consumption in heavy-drinking smokers. More recently, sazetidine-A, which selectively desensitizes α4β2 nicotinic receptors, was shown to significantly reduce alcohol intake in a rat model. To develop novel therapeutics for treating alcohol use disorder, we designed and synthesized novel sazetidine-A analogues containing a methyl group at the 2-position of the pyridine ring. In vitro pharmacological studies revealed that some of the novel compounds showed overall pharmacological property profiles similar to that of sazetidine-A but exhibited reduced agonist activity across all nicotinic receptor subtypes tested. In rat studies, compound (S)-9 significantly reduced alcohol uptake. More importantly, preliminary results from studies in a ferret model indicate that these novel nAChR ligands have an improved adverse side-effect profile in comparison with that of varenicline.
|
Displacement of [3H]-Epibatidine from rat alpha3beta4 nACHR expressed in HEK293 cell membranes by liquid scintillation counting analysis
|
Rattus norvegicus
|
390.0
nM
|
|
Journal : J. Med. Chem.
Title : Chemistry and pharmacological studies of 3-alkoxy-2,5-disubstituted-pyridinyl compounds as novel selective α4β2 nicotinic acetylcholine receptor ligands that reduce alcohol intake in rats.
Year : 2013
Volume : 56
Issue : 7
First Page : 3000
Last Page : 3011
Authors : Liu Y, Richardson J, Tran T, Al-Muhtasib N, Xie T, Yenugonda VM, Sexton HG, Rezvani AH, Levin ED, Sahibzada N, Kellar KJ, Brown ML, Xiao Y, Paige M.
Abstract : Neuronal acetylcholine receptors mediate the addictive effects of nicotine and may also be involved in alcohol addiction. Varenicline, an approved smoking cessation medication, showed clear efficacy in reducing alcohol consumption in heavy-drinking smokers. More recently, sazetidine-A, which selectively desensitizes α4β2 nicotinic receptors, was shown to significantly reduce alcohol intake in a rat model. To develop novel therapeutics for treating alcohol use disorder, we designed and synthesized novel sazetidine-A analogues containing a methyl group at the 2-position of the pyridine ring. In vitro pharmacological studies revealed that some of the novel compounds showed overall pharmacological property profiles similar to that of sazetidine-A but exhibited reduced agonist activity across all nicotinic receptor subtypes tested. In rat studies, compound (S)-9 significantly reduced alcohol uptake. More importantly, preliminary results from studies in a ferret model indicate that these novel nAChR ligands have an improved adverse side-effect profile in comparison with that of varenicline.
|
Displacement of [3H]-Epibatidine from rat alpha3beta2 nACHR expressed in HEK293 cell membranes by liquid scintillation counting analysis
|
Rattus norvegicus
|
2.5
nM
|
|
Journal : J. Med. Chem.
Title : Chemistry and pharmacological studies of 3-alkoxy-2,5-disubstituted-pyridinyl compounds as novel selective α4β2 nicotinic acetylcholine receptor ligands that reduce alcohol intake in rats.
Year : 2013
Volume : 56
Issue : 7
First Page : 3000
Last Page : 3011
Authors : Liu Y, Richardson J, Tran T, Al-Muhtasib N, Xie T, Yenugonda VM, Sexton HG, Rezvani AH, Levin ED, Sahibzada N, Kellar KJ, Brown ML, Xiao Y, Paige M.
Abstract : Neuronal acetylcholine receptors mediate the addictive effects of nicotine and may also be involved in alcohol addiction. Varenicline, an approved smoking cessation medication, showed clear efficacy in reducing alcohol consumption in heavy-drinking smokers. More recently, sazetidine-A, which selectively desensitizes α4β2 nicotinic receptors, was shown to significantly reduce alcohol intake in a rat model. To develop novel therapeutics for treating alcohol use disorder, we designed and synthesized novel sazetidine-A analogues containing a methyl group at the 2-position of the pyridine ring. In vitro pharmacological studies revealed that some of the novel compounds showed overall pharmacological property profiles similar to that of sazetidine-A but exhibited reduced agonist activity across all nicotinic receptor subtypes tested. In rat studies, compound (S)-9 significantly reduced alcohol uptake. More importantly, preliminary results from studies in a ferret model indicate that these novel nAChR ligands have an improved adverse side-effect profile in comparison with that of varenicline.
|
Displacement of [3H]-Epibatidine from rat alpha2beta4 nACHR expressed in HEK293 cell membranes by liquid scintillation counting analysis
|
Rattus norvegicus
|
94.0
nM
|
|
Journal : J. Med. Chem.
Title : Chemistry and pharmacological studies of 3-alkoxy-2,5-disubstituted-pyridinyl compounds as novel selective α4β2 nicotinic acetylcholine receptor ligands that reduce alcohol intake in rats.
Year : 2013
Volume : 56
Issue : 7
First Page : 3000
Last Page : 3011
Authors : Liu Y, Richardson J, Tran T, Al-Muhtasib N, Xie T, Yenugonda VM, Sexton HG, Rezvani AH, Levin ED, Sahibzada N, Kellar KJ, Brown ML, Xiao Y, Paige M.
Abstract : Neuronal acetylcholine receptors mediate the addictive effects of nicotine and may also be involved in alcohol addiction. Varenicline, an approved smoking cessation medication, showed clear efficacy in reducing alcohol consumption in heavy-drinking smokers. More recently, sazetidine-A, which selectively desensitizes α4β2 nicotinic receptors, was shown to significantly reduce alcohol intake in a rat model. To develop novel therapeutics for treating alcohol use disorder, we designed and synthesized novel sazetidine-A analogues containing a methyl group at the 2-position of the pyridine ring. In vitro pharmacological studies revealed that some of the novel compounds showed overall pharmacological property profiles similar to that of sazetidine-A but exhibited reduced agonist activity across all nicotinic receptor subtypes tested. In rat studies, compound (S)-9 significantly reduced alcohol uptake. More importantly, preliminary results from studies in a ferret model indicate that these novel nAChR ligands have an improved adverse side-effect profile in comparison with that of varenicline.
|
Displacement of [3H]-Epibatidine from rat alpha2beta2 nACHR expressed in HEK293 cell membranes by liquid scintillation counting analysis
|
Rattus norvegicus
|
0.48
nM
|
|
Journal : J. Med. Chem.
Title : Chemistry and pharmacological studies of 3-alkoxy-2,5-disubstituted-pyridinyl compounds as novel selective α4β2 nicotinic acetylcholine receptor ligands that reduce alcohol intake in rats.
Year : 2013
Volume : 56
Issue : 7
First Page : 3000
Last Page : 3011
Authors : Liu Y, Richardson J, Tran T, Al-Muhtasib N, Xie T, Yenugonda VM, Sexton HG, Rezvani AH, Levin ED, Sahibzada N, Kellar KJ, Brown ML, Xiao Y, Paige M.
Abstract : Neuronal acetylcholine receptors mediate the addictive effects of nicotine and may also be involved in alcohol addiction. Varenicline, an approved smoking cessation medication, showed clear efficacy in reducing alcohol consumption in heavy-drinking smokers. More recently, sazetidine-A, which selectively desensitizes α4β2 nicotinic receptors, was shown to significantly reduce alcohol intake in a rat model. To develop novel therapeutics for treating alcohol use disorder, we designed and synthesized novel sazetidine-A analogues containing a methyl group at the 2-position of the pyridine ring. In vitro pharmacological studies revealed that some of the novel compounds showed overall pharmacological property profiles similar to that of sazetidine-A but exhibited reduced agonist activity across all nicotinic receptor subtypes tested. In rat studies, compound (S)-9 significantly reduced alcohol uptake. More importantly, preliminary results from studies in a ferret model indicate that these novel nAChR ligands have an improved adverse side-effect profile in comparison with that of varenicline.
|
Antagonist activity at human alpha4beta2 nAChR assessed as inhibition of nicotine-induced [86Rb+] efflux preincubated for 10 mins before nicotine exposure by cell-based liquid scintillation counting
|
Homo sapiens
|
94.0
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Agonist activity at human alpha4beta2 nAChR assessed as stimulation of [86Rb+] efflux after 2 mins by cell-based liquid scintillation counting
|
Homo sapiens
|
950.0
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Displacement of [3H]epibatidine from nAChR in rat forebrain
|
Rattus norvegicus
|
0.71
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Displacement of [3H]epibatidine from rat alpha7 nAChR expressed in HEK293 cells after 4 hrs
|
Rattus norvegicus
|
62.0
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Displacement of [3H]epibatidine from rat alpha4beta4 nAChR expressed in HEK293 cells after 4 hrs
|
Rattus norvegicus
|
15.0
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Displacement of [3H]epibatidine from human alpha4beta2 nAChR after 4 hrs by cell-based assay
|
Homo sapiens
|
0.13
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Displacement of [3H]epibatidine from rat alpha3beta4 nAChR expressed in HEK293 cells after 4 hrs
|
Rattus norvegicus
|
460.0
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Displacement of [3H]epibatidine from rat alpha3beta2 nAChR expressed in HEK293 cells after 4 hrs
|
Rattus norvegicus
|
1.9
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Displacement of [3H]epibatidine from rat alpha2beta4 nAChR expressed in HEK293 cells after 4 hrs
|
Rattus norvegicus
|
71.0
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Displacement of [3H]epibatidine from rat alpha2beta2 nAChR expressed in HEK293 cells after 4 hrs
|
Rattus norvegicus
|
0.22
nM
|
|
Journal : J. Med. Chem.
Title : Design, synthesis and discovery of picomolar selective α4β2 nicotinic acetylcholine receptor ligands.
Year : 2013
Volume : 56
Issue : 21
First Page : 8404
Last Page : 8421
Authors : Yenugonda VM, Xiao Y, Levin ED, Rezvani AH, Tran T, Al-Muhtasib N, Sahibzada N, Xie T, Wells C, Slade S, Johnson JE, Dakshanamurthy S, Kong HS, Tomita Y, Liu Y, Paige M, Kellar KJ, Brown ML.
Abstract : Developing novel and selective compounds that desensitize α4β2 nicotinic acetylcholine receptors (nAChRs) could provide new effective treatments for nicotine addiction, as well as other disorders. Here we report a new class of nAChR ligands that display high selectivity and picomolar binding affinity for α4β2 nicotinic receptors. The novel compounds have Ki values in the range of 0.031-0.26 nM and properties that should make them good candidates as drugs acting in the CNS. The selected lead compound 1 (VMY-2-95) binds with high affinity and potently desensitizes α4β2 nAChRs. At a dose of 3 mg/kg, compound 1 significantly reduced rat nicotine self-administration. The overall results support further characterizations of compound 1 and its analogues in preclinical models of nicotine addiction and perhaps other disorders involving nAChRs.
|
Antagonist activity at rat alpha4beta2 nAChR expressed in Xenopus laevis oocytes assessed as inhibition of acetylcholine-induced current by two-electrode voltage clamp electrophysiological analysis
|
Rattus norvegicus
|
200.0
nM
|
|
Journal : J. Med. Chem.
Title : Synthesis, nicotinic acetylcholine receptor binding, and antinociceptive properties of 2'-fluoro-3'-(substituted pyridinyl)-7-deschloroepibatidine analogues.
Year : 2014
Volume : 57
Issue : 3
First Page : 836
Last Page : 848
Authors : Ondachi PW, Castro AH, Bartkowiak JM, Luetje CW, Damaj MI, Mascarella SW, Navarro HA, Carroll FI.
Abstract : 2'-Fluoro-3-(substituted pyridine)epibatidine analogues 7a-e and 8a-e were synthesized, and their in vitro and in vivo nAChR properties were determined. 2'-Fluoro-3'-(4″-pyridinyl)deschloroepibatidine (7a) and 2'-fluoro-3'-(3″-pyridinyl)deschloroepibatidine (8a) were synthesized as bioisosteres of the 4'-nitrophenyl lead compounds 5a and 5g. Comparison of the in vitro nAChR properties of 7a and 8a to those of 5a and 5g showed that 7a and 8a had in vitro nAChR properties similar to those of 5a and 5g but both were more selective for the α4β2-nAChR relative to the α3β4- and α7-nAChRs than 5a and 5g. The in vivo nAChR properties in mice of 7a were similar to those of 5a. In contrast, 8a was an agonist in all four mouse acute tests, whereas 5g was active only in a spontaneous activity test. In addition, 5g was a nicotine antagonist in both the tail-flick and hot-plate tests, whereas 8a was an antagonist only in the tail-flick test.
|
Displacement of [3H]-epibatidine from alpha4beta2* nAChR in Sprague-Dawley rat cerebral cortex after 4 hrs by liquid scintillation counting analysis
|
Rattus norvegicus
|
0.12
nM
|
|
Journal : J. Med. Chem.
Title : Synthesis, nicotinic acetylcholine receptor binding, and antinociceptive properties of 2'-fluoro-3'-(substituted pyridinyl)-7-deschloroepibatidine analogues.
Year : 2014
Volume : 57
Issue : 3
First Page : 836
Last Page : 848
Authors : Ondachi PW, Castro AH, Bartkowiak JM, Luetje CW, Damaj MI, Mascarella SW, Navarro HA, Carroll FI.
Abstract : 2'-Fluoro-3-(substituted pyridine)epibatidine analogues 7a-e and 8a-e were synthesized, and their in vitro and in vivo nAChR properties were determined. 2'-Fluoro-3'-(4″-pyridinyl)deschloroepibatidine (7a) and 2'-fluoro-3'-(3″-pyridinyl)deschloroepibatidine (8a) were synthesized as bioisosteres of the 4'-nitrophenyl lead compounds 5a and 5g. Comparison of the in vitro nAChR properties of 7a and 8a to those of 5a and 5g showed that 7a and 8a had in vitro nAChR properties similar to those of 5a and 5g but both were more selective for the α4β2-nAChR relative to the α3β4- and α7-nAChRs than 5a and 5g. The in vivo nAChR properties in mice of 7a were similar to those of 5a. In contrast, 8a was an agonist in all four mouse acute tests, whereas 5g was active only in a spontaneous activity test. In addition, 5g was a nicotine antagonist in both the tail-flick and hot-plate tests, whereas 8a was an antagonist only in the tail-flick test.
|
Displacement of [3H]epibatidine from rat forebrain alpha3beta4 nAChR by competition binding assay
|
Rattus norvegicus
|
86.0
nM
|
|
Journal : ACS Med. Chem. Lett.
Title : Enantiopure Cyclopropane-Bearing Pyridyldiazabicyclo[3.3.0]octanes as Selective α4β2-nAChR Ligands.
Year : 2014
Volume : 5
Issue : 11
First Page : 1196
Last Page : 1201
Authors : Onajole OK, Eaton JB, Lukas RJ, Brunner D, Thiede L, Caldarone BJ, Kozikowski AP.
Abstract : We report the synthesis and characterization of a series of enantiopure 5-cyclopropane-bearing pyridyldiazabicyclo[3.3.0]octanes that display low nanomolar binding affinities and act as functional agonists at α4β2-nicotinic acetylcholine receptor (nAChR) subtype. Structure-activity relationship studies revealed that incorporation of a cyclopropane-containing side chain at the 5-position of the pyridine ring provides ligands with improved subtype selectivity for nAChR β2 subunit-containing nAChR subtypes (β2*-nAChRs) over β4*-nAChRs compared to the parent compound 4. Compound 15 exhibited subnanomolar binding affinity for α4β2- and α4β2*-nAChRs with negligible interaction. Functional assays confirm selectivity for α4β2-nAChRs. Furthermore, using the SmartCube assay system, this ligand showed antidepressant, anxiolytic, and antipsychotic features, while mouse forced-swim assay further confirm the antidepressant-like property of 15.
|
Displacement of [3H]epibatidine from rat forebrain alpha4beta2 nAChR by competition binding assay
|
Rattus norvegicus
|
0.4
nM
|
|
Journal : ACS Med. Chem. Lett.
Title : Enantiopure Cyclopropane-Bearing Pyridyldiazabicyclo[3.3.0]octanes as Selective α4β2-nAChR Ligands.
Year : 2014
Volume : 5
Issue : 11
First Page : 1196
Last Page : 1201
Authors : Onajole OK, Eaton JB, Lukas RJ, Brunner D, Thiede L, Caldarone BJ, Kozikowski AP.
Abstract : We report the synthesis and characterization of a series of enantiopure 5-cyclopropane-bearing pyridyldiazabicyclo[3.3.0]octanes that display low nanomolar binding affinities and act as functional agonists at α4β2-nicotinic acetylcholine receptor (nAChR) subtype. Structure-activity relationship studies revealed that incorporation of a cyclopropane-containing side chain at the 5-position of the pyridine ring provides ligands with improved subtype selectivity for nAChR β2 subunit-containing nAChR subtypes (β2*-nAChRs) over β4*-nAChRs compared to the parent compound 4. Compound 15 exhibited subnanomolar binding affinity for α4β2- and α4β2*-nAChRs with negligible interaction. Functional assays confirm selectivity for α4β2-nAChRs. Furthermore, using the SmartCube assay system, this ligand showed antidepressant, anxiolytic, and antipsychotic features, while mouse forced-swim assay further confirm the antidepressant-like property of 15.
|
Displacement of [3H]epibatidine from rat forebrain alpha4beta4 nAChR by competition binding assay
|
Rattus norvegicus
|
110.0
nM
|
|
Journal : ACS Med. Chem. Lett.
Title : Enantiopure Cyclopropane-Bearing Pyridyldiazabicyclo[3.3.0]octanes as Selective α4β2-nAChR Ligands.
Year : 2014
Volume : 5
Issue : 11
First Page : 1196
Last Page : 1201
Authors : Onajole OK, Eaton JB, Lukas RJ, Brunner D, Thiede L, Caldarone BJ, Kozikowski AP.
Abstract : We report the synthesis and characterization of a series of enantiopure 5-cyclopropane-bearing pyridyldiazabicyclo[3.3.0]octanes that display low nanomolar binding affinities and act as functional agonists at α4β2-nicotinic acetylcholine receptor (nAChR) subtype. Structure-activity relationship studies revealed that incorporation of a cyclopropane-containing side chain at the 5-position of the pyridine ring provides ligands with improved subtype selectivity for nAChR β2 subunit-containing nAChR subtypes (β2*-nAChRs) over β4*-nAChRs compared to the parent compound 4. Compound 15 exhibited subnanomolar binding affinity for α4β2- and α4β2*-nAChRs with negligible interaction. Functional assays confirm selectivity for α4β2-nAChRs. Furthermore, using the SmartCube assay system, this ligand showed antidepressant, anxiolytic, and antipsychotic features, while mouse forced-swim assay further confirm the antidepressant-like property of 15.
|
Inactivation of alpha4beta2* nAChR high affinity site (unknown origin) expressed in xenopus oocytes by electrophysiology method
|
Homo sapiens
|
70.0
nM
|
|
Journal : J. Med. Chem.
Title : Recent developments in novel antidepressants targeting α4β2-nicotinic acetylcholine receptors.
Year : 2014
Volume : 57
Issue : 20
First Page : 8204
Last Page : 8223
Authors : Yu LF, Zhang HK, Caldarone BJ, Eaton JB, Lukas RJ, Kozikowski AP.
Abstract : Nicotinic acetylcholine receptors (nAChRs) have been investigated for developing drugs that can potentially treat various central nervous system disorders. Considerable evidence supports the hypothesis that modulation of the cholinergic system through activation and/or desensitization/inactivation of nAChR holds promise for the development of new antidepressants. The introductory portion of this Miniperspective discusses the basic pharmacology that underpins the involvement of α4β2-nAChRs in depression, along with the structural features that are essential to ligand recognition by the α4β2-nAChRs. The remainder of this Miniperspective analyzes reported nicotinic ligands in terms of drug design considerations and their potency and selectivity, with a particular focus on compounds exhibiting antidepressant-like effects in preclinical or clinical studies. This Miniperspective aims to provide an in-depth analysis of the potential for using nicotinic ligands in the treatment of depression, which may hold some promise in addressing an unmet clinical need by providing relief from depressive symptoms in refractory patients.
|
Agonist activity at alpha4beta2* nAChR (unknown origin)
|
Homo sapiens
|
0.4
nM
|
|
Journal : J. Med. Chem.
Title : Recent developments in novel antidepressants targeting α4β2-nicotinic acetylcholine receptors.
Year : 2014
Volume : 57
Issue : 20
First Page : 8204
Last Page : 8223
Authors : Yu LF, Zhang HK, Caldarone BJ, Eaton JB, Lukas RJ, Kozikowski AP.
Abstract : Nicotinic acetylcholine receptors (nAChRs) have been investigated for developing drugs that can potentially treat various central nervous system disorders. Considerable evidence supports the hypothesis that modulation of the cholinergic system through activation and/or desensitization/inactivation of nAChR holds promise for the development of new antidepressants. The introductory portion of this Miniperspective discusses the basic pharmacology that underpins the involvement of α4β2-nAChRs in depression, along with the structural features that are essential to ligand recognition by the α4β2-nAChRs. The remainder of this Miniperspective analyzes reported nicotinic ligands in terms of drug design considerations and their potency and selectivity, with a particular focus on compounds exhibiting antidepressant-like effects in preclinical or clinical studies. This Miniperspective aims to provide an in-depth analysis of the potential for using nicotinic ligands in the treatment of depression, which may hold some promise in addressing an unmet clinical need by providing relief from depressive symptoms in refractory patients.
|
Agonist activity at human alpha4beta2 nAChR expressed in xenopus oocytes by electrophysiology method
|
Homo sapiens
|
2.3
nM
|
|
Journal : J. Med. Chem.
Title : Recent developments in novel antidepressants targeting α4β2-nicotinic acetylcholine receptors.
Year : 2014
Volume : 57
Issue : 20
First Page : 8204
Last Page : 8223
Authors : Yu LF, Zhang HK, Caldarone BJ, Eaton JB, Lukas RJ, Kozikowski AP.
Abstract : Nicotinic acetylcholine receptors (nAChRs) have been investigated for developing drugs that can potentially treat various central nervous system disorders. Considerable evidence supports the hypothesis that modulation of the cholinergic system through activation and/or desensitization/inactivation of nAChR holds promise for the development of new antidepressants. The introductory portion of this Miniperspective discusses the basic pharmacology that underpins the involvement of α4β2-nAChRs in depression, along with the structural features that are essential to ligand recognition by the α4β2-nAChRs. The remainder of this Miniperspective analyzes reported nicotinic ligands in terms of drug design considerations and their potency and selectivity, with a particular focus on compounds exhibiting antidepressant-like effects in preclinical or clinical studies. This Miniperspective aims to provide an in-depth analysis of the potential for using nicotinic ligands in the treatment of depression, which may hold some promise in addressing an unmet clinical need by providing relief from depressive symptoms in refractory patients.
|
Displacement of [3H]-epibatidine from alpha4beta2 nAChR in rat cerebral cortex homogenates after 4 hrs by liquid scintillation counting
|
Rattus norvegicus
|
0.12
nM
|
|
Journal : Bioorg. Med. Chem.
Title : Synthesis, nicotinic acetylcholine receptor binding, in vitro and in vivo pharmacology properties of 3'-(substituted pyridinyl)-deschloroepibatidine analogs.
Year : 2015
Volume : 23
Issue : 17
First Page : 5693
Last Page : 5701
Authors : Ondachi PW, Ye Z, Castro AH, Luetje CW, Damaj MI, Mascarella SW, Navarro HA, Carroll FI.
Abstract : Over the last several years we have synthesized and studied the in vitro and in vivo nAChR pharmacological properties of epibatidine (4) analogs. In this study we report the synthesis, nAChR in vitro and in vivo pharmacological properties of 3'-(substituted pyridinyl)-deschloroepibatidine analogs (5a-e and 6a-e). All of the analogs had high binding affinity for α4β2(∗)-nAChRs. Several of the analogs were potent antagonists of α4β2-nAChRs in in vitro efficacy tests and were potent antagonists of nicotine-induced antinociception in the mouse tail-flick test. Compound 6b had a Ki = 0.13 nM in the binding assay, 25- and 46-fold selectivity for the α4β2(∗)-nAChR relative to the α3β4- and α7-nAChR, respectively, in the in vitro efficacy test and an AD50 = 0.13 μg/kg in the tail-flick test. Combined with favorable calculated physiochemical properties compared to varenicline, our findings suggest that 6b should be considered for development as a potential pharmacotherapy for treating nicotine addiction and other CNS disorders.
|
Antagonist activity at rat alpha4beta2 nAChR expressed in Xenopus laevis oocytes assessed as inhibition of acetylcholine-induced mean current response by measuring remaining current at 100 uM by two-electrode voltage clamp electrophysiology assay relative to control
|
Rattus norvegicus
|
38.0
%
|
|
Journal : Bioorg. Med. Chem.
Title : Synthesis, nicotinic acetylcholine receptor binding, in vitro and in vivo pharmacology properties of 3'-(substituted pyridinyl)-deschloroepibatidine analogs.
Year : 2015
Volume : 23
Issue : 17
First Page : 5693
Last Page : 5701
Authors : Ondachi PW, Ye Z, Castro AH, Luetje CW, Damaj MI, Mascarella SW, Navarro HA, Carroll FI.
Abstract : Over the last several years we have synthesized and studied the in vitro and in vivo nAChR pharmacological properties of epibatidine (4) analogs. In this study we report the synthesis, nAChR in vitro and in vivo pharmacological properties of 3'-(substituted pyridinyl)-deschloroepibatidine analogs (5a-e and 6a-e). All of the analogs had high binding affinity for α4β2(∗)-nAChRs. Several of the analogs were potent antagonists of α4β2-nAChRs in in vitro efficacy tests and were potent antagonists of nicotine-induced antinociception in the mouse tail-flick test. Compound 6b had a Ki = 0.13 nM in the binding assay, 25- and 46-fold selectivity for the α4β2(∗)-nAChR relative to the α3β4- and α7-nAChR, respectively, in the in vitro efficacy test and an AD50 = 0.13 μg/kg in the tail-flick test. Combined with favorable calculated physiochemical properties compared to varenicline, our findings suggest that 6b should be considered for development as a potential pharmacotherapy for treating nicotine addiction and other CNS disorders.
|
Antagonist activity at rat alpha4beta2 nAChR expressed in Xenopus laevis oocytes assessed as inhibition of acetylcholine-induced mean current response by two-electrode voltage clamp electrophysiology assay
|
Rattus norvegicus
|
200.0
nM
|
|
Journal : Bioorg. Med. Chem.
Title : Synthesis, nicotinic acetylcholine receptor binding, in vitro and in vivo pharmacology properties of 3'-(substituted pyridinyl)-deschloroepibatidine analogs.
Year : 2015
Volume : 23
Issue : 17
First Page : 5693
Last Page : 5701
Authors : Ondachi PW, Ye Z, Castro AH, Luetje CW, Damaj MI, Mascarella SW, Navarro HA, Carroll FI.
Abstract : Over the last several years we have synthesized and studied the in vitro and in vivo nAChR pharmacological properties of epibatidine (4) analogs. In this study we report the synthesis, nAChR in vitro and in vivo pharmacological properties of 3'-(substituted pyridinyl)-deschloroepibatidine analogs (5a-e and 6a-e). All of the analogs had high binding affinity for α4β2(∗)-nAChRs. Several of the analogs were potent antagonists of α4β2-nAChRs in in vitro efficacy tests and were potent antagonists of nicotine-induced antinociception in the mouse tail-flick test. Compound 6b had a Ki = 0.13 nM in the binding assay, 25- and 46-fold selectivity for the α4β2(∗)-nAChR relative to the α3β4- and α7-nAChR, respectively, in the in vitro efficacy test and an AD50 = 0.13 μg/kg in the tail-flick test. Combined with favorable calculated physiochemical properties compared to varenicline, our findings suggest that 6b should be considered for development as a potential pharmacotherapy for treating nicotine addiction and other CNS disorders.
|
SARS-CoV-2 3CL-Pro protease inhibition percentage at 20µM by FRET kind of response from peptide substrate
|
Severe acute respiratory syndrome coronavirus 2
|
22.78
%
|
|
Title : Identification of inhibitors of SARS-Cov2 M-Pro enzymatic activity using a small molecule repurposing screen
Year : 2020
Authors : Maria Kuzikov, Elisa Costanzi, Jeanette Reinshagen, Francesca Esposito, Laura Vangeel, Markus Wolf, Bernhard Ellinger, Carsten Claussen, Gerd Geisslinger, Angela Corona, Daniela Iaconis, Carmine Talarico, Candida Manelfi, Rolando Cannalire, Giulia Rossetti, Jonas Gossen, Simone Albani, Francesco Musiani, Katja Herzog, Yang Ye, Barbara Giabbai, Nicola Demitri, Dirk Jochmans, Steven De Jonghe, Jasper Rymenants, Vincenzo Summa, Enzo Tramontano, Andrea R. Beccari, Pieter Leyssen, Paola Storici, Johan Neyts, Philip Gribbon, and Andrea Zaliani
Abstract : Compound repurposing is an important strategy being pursued in the identification of effective treatment against the SARS-CoV-2 infection and COVID-19 disease. In this regard, SARS-CoV-2 main protease (M-Pro), also termed 3CL-Pro, is an attractive drug target as it plays a central role in viral replication by processing the viral polyprotein into 11 non-structural proteins. We report the results of a screening campaign involving ca 8.7 K compounds containing marketed drugs, clinical and preclinical candidates, and chemicals regarded as safe in humans. We confirmed previously reported inhibitors of 3CL-Pro, but we have also identified 68 compounds with IC50 lower than 1 uM and 127 compounds with IC50 lower than 5 uM. Profiling showed 67% of confirmed hits were selective (> 5 fold) against other Cys- and Ser- proteases (Chymotrypsin and Cathepsin-L) and MERS 3CL-Pro. Selected compounds were also analysed in their binding characteristics.
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
-0.17
%
|
|
Antiviral activity determined as inhibition of SARS-CoV-2 induced cytotoxicity of VERO-6 cells at 10 uM after 48 hours exposure to 0.01 MOI SARS CoV-2 virus by high content imaging
|
Chlorocebus sabaeus
|
-0.17
%
|
|
Title : Cytopathic SARS-Cov2 screening on VERO-E6 cells in a large repurposing effort
Year : 2020
Authors : Andrea Zaliani, Laura Vangeel, Jeanette Reinshagen, Daniela Iaconis, Maria Kuzikov, Oliver Keminer, Markus Wolf, Bernhard Ellinger, Francesca Esposito, Angela Corona, Enzo Tramontano, Candida Manelfi, Katja Herzog, Dirk Jochmans, Steven De Jonghe, Winston Chiu, Thibault Francken, Joost Schepers, Caroline Collard, Kayvan Abbasi, Carsten Claussen , Vincenzo Summa, Andrea R. Beccari, Johan Neyts, Philip Gribbon and Pieter Leyssen
Abstract : Worldwide, there are intensive efforts to identify repurposed drugs as potential therapies against SARS-CoV-2 infection and the associated COVID-19 disease. To date, the anti-inflammatory drug dexamethasone and (to a lesser extent) the RNA-polymerase inhibitor remdesivir have been shown to be effective in reducing mortality and patient time to recovery, respectively, in patients. Here, we report the results of a phenotypic screening campaign within an EU-funded project (H2020-EXSCALATE4COV) aimed at extending the repertoire of anti-COVID therapeutics through repurposing of available compounds and highlighting compounds with new mechanisms of action against viral infection. We screened 8702 molecules from different repurposing libraries, to reveal 110 compounds with an anti-cytopathic IC50 < 20 µM. From this group, 18 with a safety index greater than 2 are also marketed drugs, making them suitable for further study as potential therapies against COVID-19. Our result supports the idea that a systematic approach to repurposing is a valid strategy to accelerate the necessary drug discovery process.
