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Jin C, Yi C, Zhong W, Xue Y, Chen K, Deng K, Wang Z, Wang T. Design, synthesis and biological evaluation of pyridinylmethylenepiperidine derivatives as potent 5-HT 1F receptor agonists for migraine therapy. Eur J Med Chem 2021; 225:113782. [PMID: 34419891 DOI: 10.1016/j.ejmech.2021.113782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/08/2021] [Accepted: 08/13/2021] [Indexed: 11/16/2022]
Abstract
Migraine is a common neurovascular disease which has been classified as the sixth most disabling disorder. Current migraine therapy was triptans, however, riptans can cause contraction of blood vessels. Therefore, novel drugs without cardiovascular effects emerged, such as CGRP and selective 5-HT1F receptor agonists. In this work, a series of pyridinylmethylenepiperidine derivatives were designed, synthesized and evaluated for their 5-HT1F receptor agonist activity. The results in vitro showed that compound C1-C6 displayed potent agonist activities compared with positive drug lasmiditan. Pharmacokinetic properties in rat indicated that 2,4,6-trifluoro-N-(6-(fluoro(1-methylpiperidin-4-ylidene)methyl)pyridin-2-yl)benzamide (C5) possessed high AUC and good bioavailability. In two rodent models of migraine, C5 significantly inhibited dural plasma protein extravasation and c-fos expression in the trigeminal nucleus caudalis. Moreover, C5 showed no effect on vasoconstriction. Through these studies, we identified C5 as a potent 5-HT1F receptor agonist for migraine therapy.
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Affiliation(s)
- Chuanfei Jin
- Sunshine Lake Pharma Co. Ltd., Shenzhen 518000; HEC Pharm Group, HEC Research and Development Center, Dongguan 523871, PR China.
| | - Chao Yi
- Sunshine Lake Pharma Co. Ltd., Shenzhen 518000; HEC Pharm Group, HEC Research and Development Center, Dongguan 523871, PR China
| | - Wenhe Zhong
- Sunshine Lake Pharma Co. Ltd., Shenzhen 518000; HEC Pharm Group, HEC Research and Development Center, Dongguan 523871, PR China
| | - Yaping Xue
- Sunshine Lake Pharma Co. Ltd., Shenzhen 518000; HEC Pharm Group, HEC Research and Development Center, Dongguan 523871, PR China
| | - Kangzhi Chen
- Sunshine Lake Pharma Co. Ltd., Shenzhen 518000; HEC Pharm Group, HEC Research and Development Center, Dongguan 523871, PR China
| | - Kang Deng
- Sunshine Lake Pharma Co. Ltd., Shenzhen 518000; HEC Pharm Group, HEC Research and Development Center, Dongguan 523871, PR China
| | - Zusheng Wang
- Sunshine Lake Pharma Co. Ltd., Shenzhen 518000; HEC Pharm Group, HEC Research and Development Center, Dongguan 523871, PR China
| | - Tao Wang
- Sunshine Lake Pharma Co. Ltd., Shenzhen 518000; HEC Pharm Group, HEC Research and Development Center, Dongguan 523871, PR China
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2
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Bildziukevich U, Kvasnicová M, Šaman D, Rárová L, Wimmer Z. Novel Oleanolic Acid-Tryptamine and -Fluorotryptamine Amides: From Adaptogens to Agents Targeting In Vitro Cell Apoptosis. PLANTS 2021; 10:plants10102082. [PMID: 34685891 PMCID: PMC8540097 DOI: 10.3390/plants10102082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/23/2021] [Accepted: 09/28/2021] [Indexed: 12/29/2022]
Abstract
Background: Oleanolic acid is a natural plant adaptogen, and tryptamine is a natural psychoactive drug. To compare their effects of with the effect of their derivatives, tryptamine and fluorotryptamine amides of oleanolic acid were designed and synthesized. Methods: The target amides were investigated for their pharmacological effect, and basic supramolecular self-assembly characteristics. Four human cancer cell lines were involved in the screening tests performed by standard methods. Results: The ability to display cytotoxicity and to cause selective cell apoptosis in human cervical carcinoma and in human malignant melanoma was seen with the three most active compounds of the prepared series of compounds. Tryptamine amide of (3β)-3-(acetyloxy)olean-12-en-28-oic acid (3a) exhibited cytotoxicity in HeLa cancer cell lines (IC50 = 8.7 ± 0.4 µM) and in G-361 cancer cell lines (IC50 = 9.0 ± 0.4 µM). Fluorotryptamine amides of (3β)-3-(acetyloxy)olean-12-en-28-oic acid (compounds 3b and 3c) showed cytotoxicity in the HeLa cancer cell line (IC50 = 6.7 ± 0.4 µM and 12.2 ± 4.7 µM, respectively). The fluorotryptamine amide of oleanolic acid (compound 4c) displayed cytotoxicity in the MCF7 cancer cell line (IC50 = 13.5 ± 3.3 µM). Based on the preliminary UV spectra measured in methanol/water mixtures, the compounds 3a–3c were also found to self-assemble into supramolecular systems. Conclusions: An effect of the fluorine atom present in the molecules on self-assembly was observed with 3b. Enhanced cytotoxicity has been achieved in 3a–4c in comparison with the effect of the parent oleanolic acid (1) and tryptamine. The compounds 3a–3c showed a strong induction of apoptosis in HeLa and G-361 cells after 24 h.
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Affiliation(s)
- Uladzimir Bildziukevich
- Isotope Laboratory, Institute of Experimental Botany of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Prague, Czech Republic;
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology in Prague, Technická 5, CZ-16628 Prague, Czech Republic
| | - Marie Kvasnicová
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic;
- Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - David Šaman
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 2, CZ-16610 Prague, Czech Republic;
| | - Lucie Rárová
- Department of Experimental Biology, Faculty of Science, Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic;
- Correspondence: (L.R.); or (Z.W.)
| | - Zdeněk Wimmer
- Isotope Laboratory, Institute of Experimental Botany of the Czech Academy of Sciences, Vídeňská 1083, CZ-14220 Prague, Czech Republic;
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology in Prague, Technická 5, CZ-16628 Prague, Czech Republic
- Correspondence: (L.R.); or (Z.W.)
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3
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Design, synthesis and evaluation of novel (S)-tryptamine derivatives containing an allyl group and an aryl sulfonamide unit as anticancer agents. Bioorg Med Chem Lett 2019; 29:1133-1137. [DOI: 10.1016/j.bmcl.2019.02.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 02/13/2019] [Accepted: 02/20/2019] [Indexed: 11/20/2022]
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4
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Ma W, Weng Z, Fang X, Gu L, Song Y, Ackermann L. Ruthenium-Catalyzed C-H Selenylations of Benzamides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801532] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Wenbo Ma
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province; Sichuan Industrial Institute of Antibiotics; Chengdu University; 610052 People's Republic of China
| | - Zhengyun Weng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province; Sichuan Industrial Institute of Antibiotics; Chengdu University; 610052 People's Republic of China
| | - Xinyue Fang
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province; Sichuan Industrial Institute of Antibiotics; Chengdu University; 610052 People's Republic of China
| | - Linghui Gu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province; Sichuan Industrial Institute of Antibiotics; Chengdu University; 610052 People's Republic of China
| | - Yupin Song
- College of Engineering; Shijiazhuang University; P. R. China
| | - Lutz Ackermann
- Institut fuer Organische und Biomolekulare Chemie; Georg-August-Universität; Göttingen Germany
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5
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Soto CA, Shashack MJ, Fox RG, Bubar MJ, Rice KC, Watson CS, Cunningham KA, Gilbertson SR, Anastasio NC. Novel Bivalent 5-HT 2A Receptor Antagonists Exhibit High Affinity and Potency in Vitro and Efficacy in Vivo. ACS Chem Neurosci 2018; 9:514-521. [PMID: 29111677 DOI: 10.1021/acschemneuro.7b00309] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The 5-HT2A receptor (5-HT2AR) plays an important role in various neuropsychiatric disorders, including substance use disorder and schizophrenia. Homodimerization of this receptor has been suggested, but tools that allow direct assessment of the relevance of the 5-HT2AR:5-HT2AR homodimer in these disorders are necessary. We chemically modified the selective 5-HT2AR antagonist M100907 to synthesize a series of homobivalent ligands connected by ethylene glycol linkers of varying lengths that may be useful tools for probing 5-HT2AR:5-HT2AR homodimer function. We tested these molecules for 5-HT2AR antagonist activity in a cell line stably expressing the functional 5-HT2AR and quantified a downstream signaling target, activation (phosphorylation) of extracellular regulated kinases 1/2 (ERK1/2), in comparison to in vivo efficacy of altering spontaneous or cocaine-evoked locomotor activity in rats. All of the synthetic compounds inhibited 5-HT-mediated phosphorylation of ERK1/2 in the cellular signaling assay; the potency of the bivalent ligands varied as a function of linker length, with the intermediate linker lengths being the most potent. The Ki values for the binding of bivalent ligands to 5-HT2AR were only slightly lower than the values for the parent (+)-M100907 compound, but significant selectivity for 5-HT2AR over 5-HT2BR or 5-HT2CR binding was retained. In addition, the 11-atom-linked bivalent 5-HT2AR antagonist (2 mg/kg, intraperitoneally) demonstrated efficacy on par with that of (+)-M100907 in inhibiting cocaine-evoked hyperactivity. As we develop further strategies for ligand-evoked receptor assembly and analyses of diverse signaling and functional roles, these novel homobivalent 5-HT2AR antagonist ligands will serve as useful in vitro and in vivo probes of 5-HT2AR structure and function.
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Affiliation(s)
| | | | | | | | - Kenner C. Rice
- Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Bethesda, Maryland 20892, United States
| | | | | | - Scott R. Gilbertson
- Department of Chemistry, University of Houston, Houston, Texas 77004, United States
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6
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Jiang L, Beattie DT, Jacobsen JR, Kintz S, Obedencio GP, Saito D, Stergiades I, Vickery RG, Long DD. Discovery of N -substituted- endo -3-(8-aza-bicyclo[3.2.1]oct-3-yl)-phenol and -phenyl carboxamide series of μ-opioid receptor antagonists. Bioorg Med Chem Lett 2017; 27:2926-2930. [DOI: 10.1016/j.bmcl.2017.04.092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 04/29/2017] [Accepted: 04/30/2017] [Indexed: 01/23/2023]
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7
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Sourbron J, Smolders I, de Witte P, Lagae L. Pharmacological Analysis of the Anti-epileptic Mechanisms of Fenfluramine in scn1a Mutant Zebrafish. Front Pharmacol 2017; 8:191. [PMID: 28428755 PMCID: PMC5382218 DOI: 10.3389/fphar.2017.00191] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/23/2017] [Indexed: 01/03/2023] Open
Abstract
Dravet syndrome (DS) is a genetic encephalopathy that is characterized by severe seizures and prominent co-morbidities (e.g., physical, intellectual disabilities). More than 85% of the DS patients carry an SCN1A mutation (sodium channel, voltage gated, type I alpha subunit). Although numerous anti-epileptic drugs have entered the market since 1990, these drugs often fail to adequately control seizures in DS patients. Nonetheless, current clinical data shows significant seizure reduction in DS patients treated with the serotonergic (5-hydroxytryptamine, 5-HT) drug fenfluramine (FA). Recent preclinical research confirmed the anti-epileptiform activity of FA in homozygous scn1a mutant zebrafish larvae that mimic DS well. Here we explored the anti-epileptiform mechanisms of FA by investigating whether selective agonists/antagonists of specific receptor subtypes were able to counteract the FA-induced inhibition of seizures and abnormal brain discharges observed in the scn1a mutants. We show that antagonists of 5-HT1D and 5-HT2C receptor subtypes were able to do so (LY 310762 and SB 242084, respectively), but notably, a 5-HT2A-antagonist (ketanserin) was not. In addition, exploring further the mechanism of action of FA beyond its serotonergic profile, we found that the anti-epileptiform brain activity of FA was significantly abolished when it was administered in combination with a σ1-agonist (PRE 084). Our study therefore provides the first evidence of an involvement of the σ1 receptor in the mechanism of FA. We further show that the level of some neurotransmitters [i.e., dopamine and noradrenaline (NAD)] in head homogenates was altered after FA treatment, whereas γ-aminobutyric acid (GABA) and glutamate levels were not. Of interest, NAD-decreasing drugs have been employed successfully in the treatment of neurological diseases; including epilepsy and this effect could contribute to the therapeutic effect of the compound. In summary, we hypothesize that the anti-epileptiform activity of FA not only originates from its 5-HT1D- and 5-HT2C-agonism, but likely also from its ability to block σ1 receptors. These findings will help in better understanding the pharmacological profile of compounds that is critical for their applicability in the treatment of DS and possibly also other drug-resistant epilepsies.
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Affiliation(s)
- Jo Sourbron
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, KU LeuvenLeuven, Belgium
| | | | - Peter de Witte
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, KU LeuvenLeuven, Belgium
| | - Lieven Lagae
- Department of Development and Regeneration, Section Pediatric Neurology, University Hospital KU LeuvenLeuven, Belgium
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8
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Functional significance of serotonin receptor dimerization. Exp Brain Res 2013; 230:375-86. [PMID: 23811735 DOI: 10.1007/s00221-013-3622-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Accepted: 06/10/2013] [Indexed: 01/01/2023]
Abstract
The original model of G-protein activation by a single G-protein-coupled receptor (GPCR) is giving way to a new model, wherein two protomers of a GPCR dimer interact with a single G-protein. This article will review the evidence suggesting that 5-HT receptors form dimers/oligomers and will compare the findings with the results obtained from the studies with other biogenic amine receptors. Topics to be covered include the origin or biogenesis of dimer formation, potential dimer interface(s), and oligomer size (dimer vs. tetramer or higher order). The functional significance will be discussed in terms of G-protein activation following ligand binding to one or two protomers in a dimeric structure, the formation of heterodimers, and the development of bivalent ligands.
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9
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Mattsson C, Andreasson T, Waters N, Sonesson C. Systematic in vivo screening of a series of 1-propyl-4-arylpiperidines against dopaminergic and serotonergic properties in rat brain: a scaffold-jumping approach. J Med Chem 2012; 55:9735-50. [PMID: 23043306 DOI: 10.1021/jm300975f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A series of 1-propyl-4-arylpiperidines were synthesized and their effects on the dopaminergic and serotonergic systems tested in vivo and in vitro. Scaffold jumping among five- and six-membered bicyclic aryl rings attached to the piperidine ring had a marked impact on these effects. Potent and selective dopamine D(2) receptor antagonists were generated from 3-indoles, 3-benzoisoxazoles, 3-benzimidazol-2-one, and 3-benzothiophenes. In contrast, 3-benzofuran was a potent and selective inhibitor of monoamine oxidase (MAO) A. The effects of the synthesized compounds on 3,4-dihydroxyphenylacetic acid (DOPAC) levels correlated very well with their affinity for dopamine D(2) receptors and MAO A. In the 4-arylpiperidine series, the most promising compound for development was the 6-chloro-3-(1-propyl-4-piperidyl)-1H-benzimidazol-2-one (19), which displayed typical dopamine D(2) receptor antagonist properties in vivo but produced only a partial reduction on spontaneous locomotor activity. This indicates that the compound may have a lower propensity to induce parkinsonism in patients.
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Affiliation(s)
- Cecilia Mattsson
- NeuroSearch Sweden AB, Arvid Wallgrens Backe 20, SE-413 46 Gothenburg, Sweden
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10
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Long DD, Armstrong SR, Beattie DT, Choi SK, Fatheree PR, Gendron RA, Genov D, Goldblum AA, Humphrey PP, Jiang L, Marquess DG, Shaw JP, Smith JA, Turner SD, Vickery RG. Discovery, oral pharmacokinetics and in vivo efficacy of velusetrag, a highly selective 5-HT4 receptor agonist that has achieved proof-of-concept in patients with chronic idiopathic constipation. Bioorg Med Chem Lett 2012; 22:6048-52. [DOI: 10.1016/j.bmcl.2012.08.051] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Accepted: 08/13/2012] [Indexed: 02/08/2023]
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11
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Long DD, Armstrong SR, Beattie DT, Choi SK, Fatheree PR, Gendron RA, Goldblum AA, Humphrey PP, Marquess DG, Shaw JP, Smith JA, Derek Turner S, Vickery RG. Discovery, oral pharmacokinetics and in vivo efficacy of a highly selective 5-HT4 receptor agonist: Clinical compound TD-2749. Bioorg Med Chem Lett 2012; 22:4849-53. [DOI: 10.1016/j.bmcl.2012.05.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 05/05/2012] [Accepted: 05/08/2012] [Indexed: 11/24/2022]
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12
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Annedi SC, Maddaford SP, Ramnauth J, Renton P, Speed J, Rakhit S, Andrews JS, Porreca F. 3,5-Disubstituted indole derivatives as selective human neuronal nitric oxide synthase (nNOS) inhibitors. Bioorg Med Chem Lett 2012; 22:1980-4. [PMID: 22318159 DOI: 10.1016/j.bmcl.2012.01.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 01/10/2012] [Accepted: 01/11/2012] [Indexed: 11/18/2022]
Abstract
A series of 3,5-disubstituted indole derivatives was designed, synthesized and evaluated as inhibitors of human nitric oxide synthase (NOS). Various guanidine isosteric groups were explored at the 5-position of the indole ring, while keeping the basic amine side chain such as N-methylpiperidine ring, fixed at the 3-position of the indole ring. Compounds having 2-thiophene amidine and 2-furanyl amidine groups (7, 8, 10 and 12) showed increased activity for human neuronal NOS and good selectivity over endothelial and inducible NOS isoforms. Compound 8 was shown to reverse (10mg/kg, ip) thermal hyperalgesia in the L(5)/L(6) spinal nerve ligation (neuropathic pain) model and was devoid of any significant drug-drug interaction potential due to cytochrome P450 inhibition or cardiovascular liabilities associated with the inhibition of endothelial NOS.
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Affiliation(s)
- Subhash C Annedi
- NeurAxon Inc., 2395 Speakman Drive, Suite #1001, Mississauga, ON, Canada L5K 1B3.
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13
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Shashack MJ, Cunningham KA, Seitz PK, McGinnis A, Smith TD, Watson CS, Gilbertson SR. Synthesis and evaluation of dimeric derivatives of 5-HT(2A) receptor (5-HT(2A)R) antagonist M-100907. ACS Chem Neurosci 2011; 2:640-644. [PMID: 22247793 DOI: 10.1021/cn200077q] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
It is now well accepted that at least some serotonin receptors exist in dimeric and oligmeric forms. The linking of receptor ligands has been shown to have potential in the development of selective agonists and antagonists for traditionally refractive receptors. Here we report the development of a dimeric version of the known 5-HT(2A)R antagonist, M-100907. Derivatives of M-100907 were synthesized to determine an appropriate site for the linker connection. Then, homodimers with polyether linkers of different lengths were functionally tested in a bioassay to determine the optimal linker length. Attachment at the catechol of M-100907 with linkers between 12 and 18 atoms in length proved to be optimal.
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Affiliation(s)
- Matthew J. Shashack
- Department of Pharmacology and Toxicology, Center for Addiction Research, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555-0615, United States
| | - Kathryn A. Cunningham
- Department of Pharmacology and Toxicology, Center for Addiction Research, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555-0615, United States
| | - Patricia K. Seitz
- Department of Pharmacology and Toxicology, Center for Addiction Research, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555-0615, United States
| | - Andrew McGinnis
- Department of Pharmacology and Toxicology, Center for Addiction Research, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555-0615, United States
| | - Thressa D. Smith
- Department of Pharmacology and Toxicology, Center for Addiction Research, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555-0615, United States
| | - Cheryl S. Watson
- Department of Biochemistry and Molecular Biology, Center for Addiction Research, The University of Texas Medical Branch, 301 University Boulevard, Galveston, Texas 77555-0647, United States
| | - Scott R. Gilbertson
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003, United States
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14
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Annedi SC, Maddaford SP, Mladenova G, Ramnauth J, Rakhit S, Andrews JS, Lee DKH, Zhang D, Porreca F, Bunton D, Christie L. Discovery of N-(3-(1-methyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-indol-6-yl) thiophene-2-carboximidamide as a selective inhibitor of human neuronal nitric oxide synthase (nNOS) for the treatment of pain. J Med Chem 2011; 54:7408-16. [PMID: 21923116 DOI: 10.1021/jm201063u] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
3,6-Disubstituted indole derivatives were designed, synthesized, and evaluated as inhibitors of human nitric oxide synthase (NOS). Bulky amine containing substitution on the 3-position of the indole ring such as an azabicyclic system showed better selectivity over 5- and 6-membered cyclic amine substitutions. Compound (-)-19 showed the best selectivity for neuronal NOS over endothelial NOS (90-fold) and inducible NOS (309-fold) among the current series. Compounds 16 and (-)-19 were shown to be either inactive or very weak inhibitors of human cytochrome P450 enzymes, indicating a low potential for drug-drug interactions. Compound 16 was shown to reverse thermal hyperalgesia in vivo in the Chung model of neuropathic pain. Compound 16 was also devoid of any significant vasoconstrictive effect in human coronary arteries, associated with the inhibition of human eNOS. These results suggest that 16 may be a useful tool for evaluating the potential role of selective nNOS inhibitors in the treatment of pain such as migraine and CTTH.
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Affiliation(s)
- Subhash C Annedi
- NeurAxon Inc., 2395 Speakman Drive, Suite 1001, Mississauga, Ontario, L5K 1B3, Canada.
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15
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Hayes DJ, Greenshaw AJ. 5-HT receptors and reward-related behaviour: a review. Neurosci Biobehav Rev 2011; 35:1419-49. [PMID: 21402098 DOI: 10.1016/j.neubiorev.2011.03.005] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Revised: 03/03/2011] [Accepted: 03/04/2011] [Indexed: 01/07/2023]
Abstract
The brain's serotonin (5-HT) system is key in the regulation of reward-related behaviours, from eating and drinking to sexual activity. The complexity of studying this system is due, in part, to the fact that 5-HT acts at many receptor subtypes throughout the brain. The recent development of drugs with greater selectivity for individual receptor subtypes has allowed for rapid advancements in our understanding of this system. Use of these drugs in combination with animal models entailing selective reward measures (i.e. intracranial self-stimulation, drug self-administration, conditioned place preference) have resulted in a greater understanding of the pharmacology of reward-related processing and behaviour (particularly regarding drugs of abuse). The putative roles of each 5-HT receptor subtype in the pharmacology of reward are outlined and discussed here. It is concluded that the actions of 5-HT in reward are receptor subtype-dependent (and thus should not be generalized) and that all studied subtypes appear to have a unique profile which is determined by content (e.g. receptor function, localization - both throughout the brain and within the synapse) and context (e.g. type of behavioural paradigm, type of drug). Given evidence of altered reward-related processing and serotonergic function in numerous neuropsychiatric disorders, such as depression, schizophrenia, and addiction, a clearer understanding of the role of 5-HT receptor subtypes in this context may lead to improved drug development and therapeutic approaches.
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Affiliation(s)
- Dave J Hayes
- Centre for Neuroscience, 513 HMRC, University of Alberta, Edmonton, AB, T6G 2S2, Canada.
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16
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Gorska K, Beyrath J, Fournel S, Guichard G, Winssinger N. Ligand dimerization programmed by hybridization to study multimeric ligand-receptor interactions. Chem Commun (Camb) 2010; 46:7742-4. [PMID: 20852806 DOI: 10.1039/c0cc02852e] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Oligomerization of receptors induced or stabilized by polyvalent ligands is a fundamental mechanism in cellular recognition and signal transduction. Herein we report a general approach to encode complex peptide macrocycles with peptide nucleic acid (PNA) tags and program their oligomerization through hybridization as exemplified with a ligand binding to oligomeric DR5, a receptor of TRAIL cytokine.
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Affiliation(s)
- Katarzyna Gorska
- Institut de Science et Ingenierie Supramoleculaires (ISIS), Université de Strasbourg-CNRS (UMR 7006), 8 allee Gaspard Monge, 67000 Strasbourg, France
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17
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Ryan RP, Monchy S, Cardinale M, Taghavi S, Crossman L, Avison MB, Berg G, van der Lelie D, Dow JM. The versatility and adaptation of bacteria from the genus Stenotrophomonas. Nat Rev Microbiol 2009; 7:514-25. [PMID: 19528958 DOI: 10.1038/nrmicro2163] [Citation(s) in RCA: 453] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The genus Stenotrophomonas comprises at least eight species. These bacteria are found throughout the environment, particularly in close association with plants. Strains of the most predominant species, Stenotrophomonas maltophilia, have an extraordinary range of activities that include beneficial effects for plant growth and health, the breakdown of natural and man-made pollutants that are central to bioremediation and phytoremediation strategies and the production of biomolecules of economic value, as well as detrimental effects, such as multidrug resistance, in human pathogenic strains. Here, we discuss the versatility of the bacteria in the genus Stenotrophomonas and the insight that comparative genomic analysis of clinical and endophytic isolates of S. maltophilia has brought to our understanding of the adaptation of this genus to various niches.
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Affiliation(s)
- Robert P Ryan
- BIOMERIT Research Centre, Department of Microbiology, BioSciences Institute, University College Cork, Cork, Ireland.
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Hansen CP, Jensen AA, Balle T, Bitsch-Jensen K, Hassan MM, Liljefors T, Frølund B. Carbamoylcholine analogs as nicotinic acetylcholine receptor agonists—Structural modifications of 3-(dimethylamino)butyl dimethylcarbamate (DMABC). Bioorg Med Chem Lett 2009; 19:87-91. [DOI: 10.1016/j.bmcl.2008.11.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2008] [Revised: 11/01/2008] [Accepted: 11/04/2008] [Indexed: 11/29/2022]
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