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Srour AM, Dawood DH, Saleh DO. Synthesis, 3D-pharmacophore modelling and 2D-QSAR study of new pyridine-3-carbonitriles as vasorelaxant active agents. NEW J CHEM 2021. [DOI: 10.1039/d0nj06319c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new set of pyridine-3-carbonitriles (3a–v) conjugated with various five-membered ring systems at pyridinyl C-6 were designed and synthesized as vasorelaxant active agents.
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Affiliation(s)
- Aladdin M. Srour
- Department of Therapeutic Chemistry
- National Research Centre
- Dokki
- Egypt
| | - Dina H. Dawood
- Chemistry of Natural and Microbial Products Department
- Pharmaceutical and Drug Industries Research Division
- National Research Centre
- Dokki
- Egypt
| | - Dalia O. Saleh
- Pharmacology Department
- National Research Centre
- Dokki
- Egypt
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2
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Mozafari Z, Arab Chamjangali M, Beglari M, Doosti R. The efficiency of ligand-receptor interaction information alone as new descriptors in QSAR modeling via random forest artificial neural network. Chem Biol Drug Des 2020; 96:812-824. [PMID: 32259386 DOI: 10.1111/cbdd.13690] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 02/15/2020] [Accepted: 03/15/2020] [Indexed: 11/28/2022]
Abstract
A new approach is introduced for the construction of a predictive quantitative structure-activity relationship model in which only ligand-receptor (LR) interaction features are used as relevant descriptors. This approach combines the benefit of the random forest (RF) as a new variable selection method with the intrinsic capability of the artificial neural network (ANN). The interaction information of the ligand-receptor (LR) complex was used as molecular docking descriptors. The most relevant descriptors were selected using the RF technique and used as inputs of ANN. The proposed RF ANN (RF-LM-ANN) method was optimized and then evaluated by the prediction of pEC50 for some of the azine derivatives as non-nucleoside reverse transcriptase inhibitors. RF-LM-ANN model under the optimal conditions was evaluated using internal (validation) and external test sets. The determination coefficients of the external test and validation sets were 0.88 and 0.89, respectively. The mean square deviation (MSE) values for the prediction of biological activities in the external test and validation sets were found to be 0.10 and 0.11, respectively. The results obtained demonstrated the good prediction ability and high generalizability of the proposed RF-LM-ANN model based on the MMDs alone.
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Affiliation(s)
- Zeinab Mozafari
- Department of Chemistry, Shahrood University of Technology, Shahrood, Iran
| | | | - Mozhgan Beglari
- Department of Chemistry, Shahrood University of Technology, Shahrood, Iran
| | - Rahele Doosti
- Department of Chemistry, Shahrood University of Technology, Shahrood, Iran
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3
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Huang JJ, Zhang ZH, He F, Liu XW, Xu XJ, Dai LJ, Liu QM, Yuan M. Novel naftopidil derivatives containing methyl phenylacetate and their blocking effects on α 1D/1A-adrenoreceptor subtypes. Bioorg Med Chem Lett 2018; 28:547-551. [PMID: 29422390 DOI: 10.1016/j.bmcl.2018.01.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/30/2018] [Accepted: 01/31/2018] [Indexed: 01/19/2023]
Abstract
α1-Adrenoceptor (α1-AR) antagonists are considered to be the most effective monotherapy agents for lower urinary tract symptoms associated with benign prostatic hyperplasia (LUTS/BPH). In this study, we synthesized compounds 2-17, which are novel piperazine derivatives that contain methyl phenylacetate. We then evaluated the vasodilatory activities of these compounds. Among them, we found that compounds 2, 7, 12, which contain 2-OCH3, 2-CH3 or 2, 5-CH3, respectively, exhibited potent α1-blocking activity similar to protype drug naftopidil (1). The antagonistic effects of 2, 7, and 12 on the (-)-noradrenaline-induced contractile response of isolated rat prostatic vas deferens (α1A), spleen (α1B) and thoracic aorta (α1D) were further characterized to assess the sub receptor selectivity. Compared with naftopidil (1) and terazosin, compound 12 showed the most desirable α1D/1A subtype selectivity, especially improved α1A subtype selectivity, and the ratios pA2 (α1D)/pA2 (α1B) and pA2 (α1A)/pA2 (α1B) were 17.0- and 19.5-fold, respectively, indicating less cardiovascular side effects when used to treat LUTS/BPH. Finally, we investigated the chiral pharmacology of 12. We found, however, that the activity of enantiomers (R)-12 and (S)-12 are not significantly different from that of rac-12.
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Affiliation(s)
- Jun-Jun Huang
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangdong 511436, PR China.
| | - Zhi-Han Zhang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant Pathology, South China Agricultural University, Guangzhou 510642, PR China
| | - Fei He
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Department of Plant Pathology, South China Agricultural University, Guangzhou 510642, PR China
| | - Xia-Wen Liu
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangdong 511436, PR China
| | - Xing-Jie Xu
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangdong 511436, PR China
| | - Li-Jun Dai
- Laboratory Animal Center, Guangzhou Medical University, Guangzhou, Guangdong 511436, PR China
| | - Qi-Meng Liu
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangdong 511436, PR China; Laboratory Animal Center, Guangzhou Medical University, Guangzhou, Guangdong 511436, PR China
| | - Mu Yuan
- Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangdong 511436, PR China
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Sagratini G, Buccioni M, Marucci G, Poggesi E, Skorski M, Costanzi S, Giardinà D. Chiral analogues of (+)-cyclazosin as potent α 1B-adrenoceptor selective antagonist. Bioorg Med Chem 2018; 26:3502-3513. [PMID: 29784274 DOI: 10.1016/j.bmc.2018.05.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 05/11/2018] [Accepted: 05/16/2018] [Indexed: 12/21/2022]
Abstract
(+)-Cyclazosin [(+)-1] is one of most selective antagonists of the α1B-adrenoceptor subtype (selectivity ratios, α1B/α1A = 13, α1B/α1D = 38-39). To improve the selectivity, we synthesized and pharmacologically studied the blocking activity against α1-adrenoceptors of several homochiral analogues of (+)-cyclazosin featuring different substituents on the carbonyl or amine groups, namely (-)-2, (+)-3, (-)-4-(-)-8, (+)-9. Moreover, we studied the activity of some their opposite enantiomers, namely (-)-1, (-)-3, (+)-6, and (-)-9, to evaluate the influence of stereochemistry on selectivity. The benzyloxycarbonyl and methyl (4aS,8aR) analogues (+)-3 and (-)-6 improved in a significant way the α1B selectivity of the progenitor compound: 4 and 14 time vs. the α1D subtype and 35 and 77 times vs. the α1A subtype, respectively. The study confirmed the importance of the hydrophobic cis-octahydroquinoxaline moiety of these molecules for the establishment of interactions with the α1-adrenoceptors as well that of their (4aS,8aR) stereochemistry to grant selectivity for the α1B subtype. Hypotheses on the mode of interaction of these compounds were advanced on the basis of molecular modeling studies performed on compound (+)-3.
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Affiliation(s)
- Gianni Sagratini
- Scuola in Scienze del Farmaco e dei Prodotti della Salute, Università di Camerino, Via S. Agostino 1, 62032 Camerino, Italy.
| | - Michela Buccioni
- Scuola in Scienze del Farmaco e dei Prodotti della Salute, Università di Camerino, Via S. Agostino 1, 62032 Camerino, Italy
| | - Gabriella Marucci
- Scuola in Scienze del Farmaco e dei Prodotti della Salute, Università di Camerino, Via S. Agostino 1, 62032 Camerino, Italy
| | - Elena Poggesi
- Drug Discovery Division, Recordati SpA, Via Civitali 1, 20148 Milano, Italy
| | - Matthew Skorski
- Department of Chemistry, American University, Washington, DC 20016, USA
| | - Stefano Costanzi
- Department of Chemistry, American University, Washington, DC 20016, USA; Center for Behavioral Neuroscience, American University, Washington, DC 20016, USA
| | - Dario Giardinà
- Scuola in Scienze del Farmaco e dei Prodotti della Salute, Università di Camerino, Via S. Agostino 1, 62032 Camerino, Italy
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5
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Template selection and refinement considerations for modelling aminergic GPCR-ligand complexes. J Mol Graph Model 2017; 76:488-503. [PMID: 28818718 DOI: 10.1016/j.jmgm.2017.07.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 07/21/2017] [Accepted: 07/25/2017] [Indexed: 11/24/2022]
Abstract
G protein-coupled receptors (GPCRs) are important targets for development of drugs for the treatment of many diseases. However, crystal structures are available for only a small fraction of these membrane bound proteins. Accurate homology models will provide opportunities for effective drug design targeting GPCRs. Recently, several serotonin receptor crystal structures were solved and needed to be evaluated as potential templates. In the first part of this work different measures of similarity in template selection were explored and methods for homology modelling, docking and refinement of aminergic GPCR-ligand complexes were developed and evaluated by comparing models of the D3-R/eticlopride complex with the crystal structure. Homology models of the three α1 adrenergic receptor subtypes and of a serotonin receptor subtype were then constructed using these methods These models were evaluated by docking a range of antagonists into them.
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Synthesis, crystal structure, biological evaluation, and molecular docking studies of quinoline-arylpiperazine derivative as potent α1A-adrenoceptor antagonist. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.10.084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Guo D, Li J, Lin H, Zhou Y, Chen Y, Zhao F, Sun H, Zhang D, Li H, Shoichet BK, Shan L, Zhang W, Xie X, Jiang H, Liu H. Design, Synthesis, and Biological Evaluation of Novel Tetrahydroprotoberberine Derivatives (THPBs) as Selective α 1A-Adrenoceptor Antagonists. J Med Chem 2016; 59:9489-9502. [PMID: 27709945 DOI: 10.1021/acs.jmedchem.6b01217] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel series of tetrahydroprotoberberine derivatives (THPBs) were designed, synthesized, and evaluated as selective α1A-adrenergic receptors (AR) antagonists for the treatment of benign prostatic hyperplasia. On the basis of the pharmacophore model of the marketed drug silodosin, THPBs were modified by introducing an indole segment into their core scaffolds. In calcium assays, 7 out of 32 compounds displayed excellent antagonistic activities against α1A-ARs, with IC50 less than 250 nM. Among them, compound (S)-27 had the most potent biological activity; its IC50 toward α1A-AR was 12.8 ± 2.2 nM, which is 781 and 20 times more selective than that toward α1B- and α1D-AR, respectively. In the functional assay using isolated rat tissues, compound (S)-27 inhibited norepinephrine-induced urethra smooth muscle contraction potently (IC50 = 0.5 ± 0.3 nM), without inhibiting the aortic contraction (IC50 > 1000 nM), displaying a better tissue selectivity than the marketed drug silodosin. Additional results of preliminary safety studies (acute toxicity and hERG inhibition) and pharmacokinetics studies indicated the potential druggability for compound (S)-27 which is a promising lead for the development of selective α1A-AR antagonists for the treatment of BPH.
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Affiliation(s)
- Diliang Guo
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Jing Li
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Henry Lin
- Department of Pharmaceutical Chemistry, University of California-San Francisco , San Francisco, California 94158, United States
| | - Yu Zhou
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Ying Chen
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Fei Zhao
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Haifeng Sun
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Dan Zhang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Honglin Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology , Shanghai 200237, China
| | - Brian K Shoichet
- Department of Pharmaceutical Chemistry, University of California-San Francisco , San Francisco, California 94158, United States.,Department of Pharmacology, University of North Carolina Chapel Hill School of Medicine , Chapel Hill, North Carolina 27516, United States
| | - Lei Shan
- Department of Natural Product Chemistry, School of Pharmacy, Second Military Medical University , 325 Guohe Road, Shanghai 200433, China
| | - Weidong Zhang
- Department of Natural Product Chemistry, School of Pharmacy, Second Military Medical University , 325 Guohe Road, Shanghai 200433, China
| | - Xin Xie
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Hualiang Jiang
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
| | - Hong Liu
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203, China
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Xu W, Huang J, Shao B, Xu X, Jiang R, Yuan M. Design, synthesis, crystal structure, biological evaluation and molecular docking studies of carbazole-arylpiperazine derivatives. Bioorg Med Chem 2016; 24:5565-5572. [PMID: 27663545 DOI: 10.1016/j.bmc.2016.09.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 09/06/2016] [Accepted: 09/07/2016] [Indexed: 01/09/2023]
Abstract
Subtype-selective α1-adrenoceptor (AR) antagonists display optimum therapeutic efficacies for the treatment of benign prostatic hyperplasia (BPH). In this study, we designed and synthesized novel carbazole-arylpiperazines derivatives (1 and 2) on the basis of the proposed pharmacophore model for α1-AR antagonists. Structural properties were investigated using single-crystal X-ray diffraction analysis. Comparison of crystal structures with ligand-based pharmacophore models revealed that the two agents may possess antagonistic effects on α1D subtype. Tissue functional assay in vitro showed that compound 2 exerted strong antagonistic activity on α1B-AR (pA2 7.13) with a poor selectivity for α1A and α1D subtypes. Compound 1 exhibited enhanced antagonistic effect on α1D subtype (pA2 7.06) and excellent selectivity for α1D over α1B (α1D/α1B ratio=79.4). To illustrate the relationship between antagonistic activity and chemical structure, molecular docking studies were performed using the homology models of α1 receptors. Binding mechanism indicated that small hydrophobic substituents attached to the arylpiperazine moiety were essential for rational design of α1D-selective antagonists.
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Affiliation(s)
- Wei Xu
- School of Pharmaceutical Sciences, Jinan University, Guangzhou 510632, China
| | - Junjun Huang
- Pharmaceutical Research Center, Guangzhou Medical University, 195# Dongfengxi Road, Guangzhou 510182, China
| | - Binhao Shao
- Pharmaceutical Research Center, Guangzhou Medical University, 195# Dongfengxi Road, Guangzhou 510182, China
| | - Xingjie Xu
- Pharmaceutical Research Center, Guangzhou Medical University, 195# Dongfengxi Road, Guangzhou 510182, China
| | - Renwang Jiang
- School of Pharmaceutical Sciences, Jinan University, Guangzhou 510632, China.
| | - Mu Yuan
- Pharmaceutical Research Center, Guangzhou Medical University, 195# Dongfengxi Road, Guangzhou 510182, China.
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9
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Campbell AP, MacDougall IJA, Griffith R, Finch AM. An aspartate in the second extracellular loop of the α(1B) adrenoceptor regulates agonist binding. Eur J Pharmacol 2014; 733:90-6. [PMID: 24690260 DOI: 10.1016/j.ejphar.2014.03.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 03/20/2014] [Accepted: 03/24/2014] [Indexed: 11/30/2022]
Abstract
The extracellular loops of the adrenoceptors present a potential therapeutic target in the design of highly selective adrenergic drugs. These regions are less conserved than the orthosteric binding site but have to date not been implicated in activation of adrenoceptors. A previously generated homology model identified an extracellular residue, D191, as a potential regulator of agonist binding. We have generated mutants of the α1B adrenoceptor replacing the charged aspartate, D191, as well as a potential interaction partner, K331, with uncharged alanines to observe effects on ligand binding and receptor activation. Significant 4-6 fold reductions in affinity for the endogenous agonists, epinephrine and norepinephrine were observed for receptors with the D191A mutation in the second extracellular loop. While changes in EC50 were observed, operational analysis yielded no apparent change in receptor activation. Based on these findings, we suggest that D191, in the second extracellular loop of the α1B adrenoceptor, acts as a 'point of first contact' for the receptor's endogenous agonists. Implication of the non-conserved extracellular regions of the receptor in agonist binding makes it a potential target for the design of highly selective drugs.
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Affiliation(s)
- Adrian P Campbell
- Department of Pharmacology, School of Medical Sciences, University of New South Wales, Kensington, NSW 2052, Australia
| | - Iain J A MacDougall
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Renate Griffith
- Department of Pharmacology, School of Medical Sciences, University of New South Wales, Kensington, NSW 2052, Australia
| | - Angela M Finch
- Department of Pharmacology, School of Medical Sciences, University of New South Wales, Kensington, NSW 2052, Australia.
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Molecular design and synthesis of 1,4-disubstituted piperazines as α(1)-adrenergic receptor blockers. Bioorg Chem 2014; 54:21-30. [PMID: 24727279 DOI: 10.1016/j.bioorg.2014.03.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 03/11/2014] [Accepted: 03/13/2014] [Indexed: 11/21/2022]
Abstract
A new series of 4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxylic acid amide and 3,5,6,8-tetrahydropyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4-one derivatives were designed, synthesized, their binding and functional properties as α1-adrenoreceptors blockers were evaluated. A new validated α1-adrenoreceptor blocker pharmacophore model (hypothesis) was generated using Discovery Studio 2.5. The compare-fit study for the designed molecules with the generated hypothesis was fulfilled and several compounds showed significant high fit values. Compounds IVa-c, VIIa-d, VIIIa-c, Xa-c, XIa-d have shown blocking activity ranging from 46.73% up to 94.74% compared to 99.17% for prazosin.
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11
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Temperature dependence of the interaction of prazosin with lipid Langmuir monolayers. Colloids Surf B Biointerfaces 2013; 112:171-6. [DOI: 10.1016/j.colsurfb.2013.07.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 07/10/2013] [Accepted: 07/12/2013] [Indexed: 11/15/2022]
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5-HT1A receptor pharmacophores to screen for off-target activity of α1-adrenoceptor antagonists. J Comput Aided Mol Des 2013; 27:305-19. [PMID: 23625023 DOI: 10.1007/s10822-013-9647-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 04/13/2013] [Indexed: 01/08/2023]
Abstract
The α1-adrenoceptors (α1-ARs), in particular the α1A-AR subtype, are current therapeutic targets of choice for the treatment of urogenital conditions, such as benign prostatic hyperplasia (BPH). Due to the similarity between the transmembrane domains of the α1-AR subtypes, and the serotonin receptor subtype 1A (5-HT1A-R), currently used α1-AR subtype-selective drugs to treat BPH display considerable off-target affinity for the 5-HT1A-R, leading to side effects. We describe the construction and validation of pharmacophores for 5-HT1A-R agonists and antagonists. Through the structural diversity of the training sets used in their development, these pharmacophores define the properties of a compound needed to bind to 5-HT1A receptors. Using these and previously published pharmacophores in virtual screening and profiling, we have identified unique chemical compounds (hits) that fit the requirements to bind to our target, the α1A-AR, selectively over the off-target, the 5-HT1A-R. Selected hits have been obtained and their affinities for α1A-AR, α1B-AR and 5-HT1A-R determined in radioligand binding assays, using membrane preparations which contain human receptors expressed individually. Three of the tested hits demonstrate statistically significant selectivity for α1A-AR over 5-HT1A-R. All seven tested hits bind to α1A-AR, with two compounds displaying K i values below 1 μM, and a further two K i values of around 10 μM. The insights and knowledge gained through the development of the new 5-HT1A-R pharmacophores will greatly aid in the design and synthesis of derivatives of our lead compound, and allow the generation of more efficacious and selective ligands.
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Study of the selectivity of α1-adrenergic antagonists by molecular modeling of α1a-, α1b-, and α1d-adrenergic receptor subtypes and docking simulations. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-013-0966-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Awadallah FM, El-Eraky WI, Saleh DO. Synthesis, vasorelaxant activity, and molecular modeling study of some new phthalazine derivatives. Eur J Med Chem 2012; 52:14-21. [PMID: 22440857 DOI: 10.1016/j.ejmech.2012.02.051] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 02/26/2012] [Accepted: 02/27/2012] [Indexed: 10/28/2022]
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Zhao X, Lu H, Huang J, Zheng J, Zheng X, Zhang Y. Binding Interaction Between Prazosin and Immobilized Receptor by Frontal Analysis. Chromatographia 2012. [DOI: 10.1007/s10337-012-2198-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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16
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Fanelli F, De Benedetti PG. Update 1 of: computational modeling approaches to structure-function analysis of G protein-coupled receptors. Chem Rev 2011; 111:PR438-535. [PMID: 22165845 DOI: 10.1021/cr100437t] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Francesca Fanelli
- Dulbecco Telethon Institute, University of Modena and Reggio Emilia, via Campi 183, 41125 Modena, Italy.
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Desiniotis A, Kyprianou N. Advances in the design and synthesis of prazosin derivatives over the last ten years. Expert Opin Ther Targets 2011; 15:1405-18. [PMID: 22148952 DOI: 10.1517/14728222.2011.641534] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Mechanistic, translational and pharmacological studies led to the identification and discovery of the preferred localization, binding characteristics, structure and functional properties of α1-adrenoceptor (α1-AR) subtypes in the bladder neck, bladder and prostate gland. The evidence gathered on α1-ARs, provided a molecular platform for the development of subtype-selective antagonists, resulting in more effective approaches targeting those receptors for the treatment of outlet bladder obstruction and benign prostate hyperplasia. AREAS COVERED Advances over the last decade in the design and optimization of Prazosin, Doxazosin and Terazosin quinazoline-based derivatives as α1-AR antagonists. Evidence on the metabolic and growth interference action by these agents, in addition to their smooth-muscle-relaxing effects. The new action recognition emerges from data on the inhibitory effect of quinazoline-based antagonists on primary tumor growth and progression to metastasis. In addition to the cellular findings in the prostate, functional validation and therapeutic effects of selected lead pharmaceutically optimized derivatives in the context of impairing vascularity and triggering tumor apoptosis. EXPERT OPINION Knowledge on targeting intracellular signalling pathways driving the cellular response via an α1-AR-dependent and independent antagonistic action, must be invested towards the optimization of new agents that while bypassing AR, exhibit improved pharmacological efficacy against human cancer.
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Affiliation(s)
- Andreas Desiniotis
- University of Kentucky Medical Center, University of Kentucky, College of Medicine, Department of Surgery, Combs Cancer Research Building, Room 306, Lexington, KY 40536, USA
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Matijssen C, Kinsella GK, Watson GW, Rozas I. Computational study of the proton affinity and basicity of structurally diverse α1-adrenoceptor ligands. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1940] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- C. Matijssen
- School of Chemistry; University of Dublin, Trinity College; Dublin 2 Ireland
| | - G. K. Kinsella
- Department of Biology; National University of Ireland; Maynooth Co. Kildare Ireland
| | - G. W. Watson
- School of Chemistry; University of Dublin, Trinity College; Dublin 2 Ireland
| | - I. Rozas
- School of Chemistry; University of Dublin, Trinity College; Dublin 2 Ireland
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Girgis AS, Ismail NS, Farag H. Facile synthesis, vasorelaxant properties and molecular modeling studies of 2-amino-8a-methoxy-4H-pyrano[3,2-c]pyridine-3-carbonitriles. Eur J Med Chem 2011; 46:2397-407. [DOI: 10.1016/j.ejmech.2011.03.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2011] [Revised: 03/06/2011] [Accepted: 03/12/2011] [Indexed: 11/25/2022]
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Fang J, Shen J, Cheng F, Xu Z, Liu G, Tang Y. Computational Insights into Ligand Selectivity of Estrogen Receptors from Pharmacophore Modeling. Mol Inform 2011; 30:539-49. [DOI: 10.1002/minf.201000170] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Accepted: 03/31/2011] [Indexed: 11/11/2022]
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A novel structural framework for α(1A/D)-adrenoceptor selective antagonists identified using subtype selective pharmacophores. PLoS One 2011; 6:e19695. [PMID: 21572949 PMCID: PMC3091868 DOI: 10.1371/journal.pone.0019695] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 04/14/2011] [Indexed: 11/19/2022] Open
Abstract
In this study four and five-feature pharmacophores for selective antagonists at each of the three α(1)-adrenoceptor (AR) subtypes were used to identify novel α(1)-AR subtype selective compounds in the National Cancer Institute and Tripos LeadQuest databases. 12 compounds were selected, based on diversity of structure, predicted high affinity and selectivity at the α(1D)- subtype compared to α(1A)- and α(1B)-ARs. 9 out of 12 of the tested compounds displayed affinity at the α(1A) and α(1D) -AR subtypes and 6 displayed affinity at all three α(1)-AR subtypes, no α(1B)-AR selective compounds were identified. 8 of the 9 compounds with α(1)-AR affinity were antagonists and one compound displayed partial agonist characteristics. This virtual screening has successfully identified an α(1A/D)-AR selective antagonist, with low µM affinity with a novel structural scaffold of a an isoquinoline fused three-ring system and good lead-like qualities ideal for further drug development.
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22
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Gupta AK, Saxena AK. 3D-QSAR CoMFA and CoMSIA studies on a set of diverse α1a-adrenergic receptor antagonists. Med Chem Res 2010. [DOI: 10.1007/s00044-010-9379-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhao X, Yuan M, Huang B, Ji H, Zhu L. Ligand-based pharmacophore model of N-Aryl and N-Heteroaryl piperazine alpha 1A-adrenoceptors antagonists using GALAHAD. J Mol Graph Model 2010; 29:126-36. [PMID: 20538497 DOI: 10.1016/j.jmgm.2010.05.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2009] [Revised: 05/06/2010] [Accepted: 05/07/2010] [Indexed: 10/19/2022]
Abstract
Computer aided drug discovery for selective antagonism effects on alpha(1A) subtypes of G-protein coupled receptors are important in the treatment of benign prostatic hyperplasia (BPH). Ligand-based pharmacophore models of N-Aryl and N-Heteroaryl piperazine alpha(1A)-antagonists were developed using two separate training sets. Pharmacophore models were generated using the flexible align method within the GALAHAD module, implemented in SYBYL8.1 software. The most significant pharmacophore hypothesis, characterized by the conflicting demands of maximizing pharmacophore consensus, maximizing steric consensus, and minimizing energy, consisted of one positive nitrogen center, one donor atom center, two acceptor atom centers, and two hydrophobic groups. The most active compound in each class training set showed a good fit with all features of the pharmacophore proposed. The resulting models also had something in common with the hypothesis using the Catalyst software reported in other publications. These alpha(1A) pharmacophore models could predict compounds well, both in the training set and the test set. The pharmacophore models were also validated by an external dataset using a portion of the ZINC database. A 3D-QSAR model using the pharmacophore model to align the compounds was established in this study. The CoMFA model with the cross-validated q(2) value of 0.735 revealed that the model was valid. Our research provides a valuable tool for designing new therapeutic compounds with desired biological activity.
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Affiliation(s)
- Xin Zhao
- Pharmaceutical Research Center, Guangzhou Medical College, Guangzhou, Guangdong 510182, China
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Enkhjargal B, Hashimoto M, Kinoshita H, Sakai Y. Characteristics of contractile activity in the renal artery of ovariectomized rats. J Smooth Muscle Res 2008; 44:17-28. [DOI: 10.1540/jsmr.44.17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Budbazar Enkhjargal
- Division of Physiology, Department of Occupational Therapy, School of Nursing and Rehabilitation Sciences, Showa University
- Department of Environmental Physiology, Shimane University School of Medicine
| | - Michio Hashimoto
- Department of Environmental Physiology, Shimane University School of Medicine
| | - Hiroki Kinoshita
- Division of Physiology, Department of Occupational Therapy, School of Nursing and Rehabilitation Sciences, Showa University
| | - Yasushi Sakai
- Division of Physiology, Department of Occupational Therapy, School of Nursing and Rehabilitation Sciences, Showa University
- Laboratory of Physiology and Pharmacology, Department of Physical Therapy, Faculty of Health Science Technology, Bunkyo University
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Macdougall IJA, Griffith R. Pharmacophore design and database searching for selective monoamine neurotransmitter transporter ligands. J Mol Graph Model 2007; 26:1113-24. [PMID: 18023378 DOI: 10.1016/j.jmgm.2007.10.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2007] [Revised: 09/24/2007] [Accepted: 10/03/2007] [Indexed: 11/25/2022]
Abstract
Neuronal monoamine transporters (MATs) are involved in the pathophysiology and treatment of mental health conditions such as depression, attention deficit hyperactivity disorder, substance abuse and neurodegenerative disorders including Alzheimer's disease and Parkinson's disease. Various structural classes of compounds have been synthesized and tested in vitro for activity against transporters of three monoamine signaling molecules: noradrenaline (NET); serotonin (SERT) and dopamine (DAT). We have developed and validated a number of pharmacophore models describing the interaction of two classes of compounds with each of these three MATs. These pharmacophores explain the selectivity of binding to the MATs for various compound classes and have been used to search in silico databases for novel, potentially selective ligands. These ligands, after confirmation of their activities, will provide tools for investigating the function of MATs as well as the potential for new therapeutic agents in mental health applications. The database searches also retrieved close analogues of known MAT ligands, further validating the approach.
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Affiliation(s)
- Iain J A Macdougall
- School of Environmental and Life Sciences, The University of Newcastle, Australia
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