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Mjörnstedt F, Miljanovic A, Wilhelmsson R, Levin M, Johansson ME. Alpha 7 Nicotinic Acetylcholine Receptor Agonist PHA 568487 Reduces Acute Inflammation but Does Not Affect Cardiac Function or Myocardial Infarct Size in the Permanent Occlusion Model. Int J Mol Sci 2024; 25:4414. [PMID: 38674000 PMCID: PMC11050294 DOI: 10.3390/ijms25084414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/10/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024] Open
Abstract
Stimulation of the alpha 7 nicotinic acetylcholine receptor (α7nAChR) has shown beneficial effects in several acute inflammatory disease models. This study aims to examine whether treatment with the selective α7nAChR agonist PHA 568487 can dampen inflammation and thereby improve cardiac function after myocardial infarction in mice. The possible anti-inflammatory properties of α7nAChR agonist PHA 568487 were tested in vivo using the air pouch model and in a permanent occlusion model of acute myocardial infarction in mice. Hematologic parameters and cytokine levels were determined. Infarct size and cardiac function were assessed via echocardiography 24 h and one week after the infarction. Treatment with α7nAChR agonist PHA 568487 decreased 12 (CCL27, CXCL5, IL6, CXCL10, CXCL11, CXCL1, CCL2, MIP1a, MIP2, CXCL16, CXCL12 and CCL25) out of 33 cytokines in the air pouch model of acute inflammation. However, α7nAChR agonist PHA 568487 did not alter infarct size, ejection fraction, cardiac output or stroke volume at 24 h or at 7 days after the myocardial infarction compared with control mice. In conclusion, despite promising immunomodulatory effects in the acute inflammatory air pouch model, α7nAChR agonist PHA 568487 did not affect infarct size or cardiac function after a permanent occlusion model of acute myocardial infarction in mice. Consequently, this study does not strengthen the hypothesis that stimulation of the α7nAChR is a future treatment strategy for acute myocardial infarction when reperfusion is lacking. However, whether other agonists of the α7nAChR can have different effects remains to be investigated.
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Affiliation(s)
- Filip Mjörnstedt
- Department of Physiology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden; (F.M.); (R.W.)
| | - Azra Miljanovic
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden; (A.M.); (M.L.)
| | - Rebecka Wilhelmsson
- Department of Physiology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden; (F.M.); (R.W.)
| | - Malin Levin
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden; (A.M.); (M.L.)
| | - Maria E. Johansson
- Department of Physiology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden; (F.M.); (R.W.)
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Keever KR, Yakubenko VP, Hoover DB. Neuroimmune nexus in the pathophysiology and therapy of inflammatory disorders: role of α7 nicotinic acetylcholine receptors. Pharmacol Res 2023; 191:106758. [PMID: 37028776 DOI: 10.1016/j.phrs.2023.106758] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/30/2023] [Accepted: 04/02/2023] [Indexed: 04/08/2023]
Abstract
The α7-nicotinic acetylcholine receptor (α7nAChR) is a key protein in the cholinergic anti-inflammatory pathway (CAP) that links the nervous and immune systems. Initially, the pathway was discovered based on the observation that vagal nerve stimulation (VNS) reduced the systemic inflammatory response in septic animals. Subsequent studies form a foundation for the leading hypothesis about the central role of the spleen in CAP activation. VNS evokes noradrenergic stimulation of ACh release from T cells in the spleen, which in turn activates α7nAChRs on the surface of macrophages. α7nAChR-mediated signaling in macrophages reduces inflammatory cytokine secretion and modifies apoptosis, proliferation, and macrophage polarization, eventually reducing the systemic inflammatory response. A protective role of the CAP has been demonstrated in preclinical studies for multiple diseases including sepsis, metabolic disease, cardiovascular diseases, arthritis, Crohn's disease, ulcerative colitis, endometriosis, and potentially COVID-19, sparking interest in using bioelectronic and pharmacological approaches to target α7nAChRs for treating inflammatory conditions in patients. Despite a keen interest, many aspects of the cholinergic pathway are still unknown. α7nAChRs are expressed on many other subsets of immune cells that can affect the development of inflammation differently. There are also other sources of ACh that modify immune cell functions. How the interplay of ACh and α7nAChR on different cells and in various tissues contributes to the anti-inflammatory responses requires additional study. This review provides an update on basic and translational studies of the CAP in inflammatory diseases, the relevant pharmacology of α7nAChR-activated drugs and raises some questions that require further investigation.
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The Alpha 7 Nicotinic Acetylcholine Receptor Does Not Affect Neonatal Brain Injury. Biomedicines 2022; 10:biomedicines10082023. [PMID: 36009570 PMCID: PMC9405910 DOI: 10.3390/biomedicines10082023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/11/2022] [Accepted: 08/15/2022] [Indexed: 11/16/2022] Open
Abstract
Inflammation plays a central role in the development of neonatal brain injury. The alpha 7 nicotinic acetylcholine receptor (α7nAChR) can modulate inflammation and has shown promising results as a treatment target in rodent models of adult brain injury. However, little is known about the role of the α7nAChR in neonatal brain injury. Hypoxic-ischemic (HI) brain injury was induced in male and female C57BL/6 mice, α7nAChR knock-out (KO) mice and their littermate controls on postnatal day (PND) 9–10. C57BL/6 pups received i.p. injections of α7nAChR agonist PHA 568487 (8 mg/kg) or saline once daily, with the first dose given directly after HI. Caspase-3 activity and cytokine mRNA expression in the brain was analyzed 24 h after HI. Motor function was assessed 24 and 48 h after HI, and immunohistochemistry was used to assess tissue loss at 24 h and 7 days after HI and microglial activation 7 days after HI. Activation of α7nAChR with the agonist PHA 568487 significantly decreased CCL2/MCP-1, CCL5/RANTES and IL-6 gene expression in the injured brain hemisphere 24 h after HI compared with saline controls in male, but not female, pups. However, α7nAChR activation did not alter caspase-3 activity and TNFα, IL-1β and CD68 mRNA expression. Furthermore, agonist treatment did not affect motor function (24 or 48 h), neuronal tissue loss (24 h or 7 days) or microglia activation (7 days) after HI in either sex. Knock-out of α7nAChR did not influence neuronal tissue loss 7 days after HI. In conclusion, targeting the α7nAChR in neonatal brain injury shows some effect on dampening acute inflammatory responses in male pups. However, this does not lead to an effect on overall injury outcome.
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Transcriptome Changes in Retinal Pigment Epithelium Post-PNU-282987 Treatment Associated with Adult Retinal Neurogenesis in Mice. J Mol Neurosci 2022; 72:1990-2010. [PMID: 35867327 DOI: 10.1007/s12031-022-02049-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/12/2022] [Indexed: 10/17/2022]
Abstract
PNU-282987, a selective alpha7 nicotinic acetylcholine receptor agonist, has previously been shown to have both neurogenic and broad regenerative effects in the adult murine retina. The objective of this study was to assay the molecular mechanism by which PNU-282987 promotes the production of Muller-derived progenitor cells through signaling via the resident retinal pigment epithelium. These Muller-derived progenitor cells generate a myriad of differentiated neurons throughout the retina that have previously been characterized by morphology. Herein, we demonstrate that topical application of PNU-282987 stimulates production of functional neurons as measured by electroretinograms. Further, we examine the mechanism of how this phenomenon occurs through activation of this atypical receptor using a transcriptomic approach isolated retinal pigment epithelium activated by PNU-282987 and in whole retina. We provide evidence that PNU-282987 causes a bi-modal signaling event in which early activation primes the retina with an inflammatory response and developmental signaling cues, followed by an inhibition of gliotic mechanisms and a decrease in the immune response, ending with upregulation of genes associated with specific retinal neuron generation. Taken together, these data provide evidence that PNU-282987 activates the retinal pigment epithelium to signal to Muller glia to produce Muller-derived progenitor cells, which can differentiate into new, functional neurons in adult mice. These data not only increase our understanding of how adult mammalian retinal regeneration can occur, but also provide therapeutic promise for treating functional vision loss.
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Webster SE, Sklar NC, Spitsbergen JB, Stanchfield ML, Webster MK, Linn DM, Otteson DC, Linn CL. Stimulation of α7 nAChR leads to regeneration of damaged neurons in adult mammalian retinal disease models. Exp Eye Res 2021; 210:108717. [PMID: 34348130 PMCID: PMC8459670 DOI: 10.1016/j.exer.2021.108717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/10/2021] [Accepted: 07/30/2021] [Indexed: 12/13/2022]
Abstract
The adult mammal lacks the ability to regenerate neurons lost to retinal damage or disease in a meaningful capacity. However, previous studies from this laboratory have demonstrated that PNU-282987, an α7 nicotinic acetylcholine receptor agonist, elicits a robust neurogenic response in the adult murine retina. With eye drop application of PNU-282987, Müller glia cells re-enter the cell cycle and produce progenitor-like cells that can differentiate into various types of retinal neurons. In this study, we analyzed the regenerative capability of PNU-282987 in two retinal disease models and identified the source of newly regenerated neurons. Wild-type mice and mice with a transgenic Müller-glia lineage tracer were manipulated to mimic loss of retinal cells associated with glaucoma or photoreceptor degeneration. Following treatment with PNU-282987, the regenerative response of retinal neurons was quantified and characterized. After onset of photoreceptor degeneration, PNU-282987 was able to successfully regenerate both rod and cone photoreceptors. Quantification of this response demonstrated significant regeneration, restoring photoreceptors to near wild-type density. In mice that had glaucoma-like conditions induced, PNU-282987 treatment led to a significant increase in retinal ganglion cells. Retrograde labeling of optic nerve axon fibers demonstrated that newly regenerated axons projected into the optic nerve. Lineage tracing analysis demonstrated that these new neurons were derived from Müller glia. These results demonstrate that PNU-282987 can induce retinal regeneration in adult mice following onset of retinal damage. The ability of PNU-282987 to regenerate retinal neurons in a robust manner offers a new direction for developing novel and potentially transformative treatments to combat neurodegenerative disease.
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Affiliation(s)
- Sarah E Webster
- Western Michigan University, Department of Biological Sciences, Kalamazoo, MI, United States
| | - Nathan C Sklar
- Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, United States
| | - Jake B Spitsbergen
- Western Michigan University, Department of Biological Sciences, Kalamazoo, MI, United States
| | - Megan L Stanchfield
- Western Michigan University, Department of Biological Sciences, Kalamazoo, MI, United States
| | - Mark K Webster
- Western Michigan University, Department of Biological Sciences, Kalamazoo, MI, United States
| | - David M Linn
- Grand Valley State University, Department of Biomedical Sciences, Allendale, MI, United States
| | - Deborah C Otteson
- University of Houston College of Optometry, Houston, TX, United States
| | - Cindy L Linn
- Western Michigan University, Department of Biological Sciences, Kalamazoo, MI, United States.
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Shimizu Y, Shimizu T, Zou S, Ono H, Hata Y, Yamamoto M, Aratake T, Shimizu S, Higashi Y, Karashima T, Saito M. Stimulation of brain α7-nicotinic acetylcholine receptors suppresses the rat micturition through brain GABAergic receptors. Biochem Biophys Res Commun 2021; 548:84-90. [PMID: 33636639 DOI: 10.1016/j.bbrc.2021.02.051] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 02/12/2021] [Indexed: 12/15/2022]
Abstract
Brain nicotinic acetylcholine receptors (nAChRs) reportedly suppress the micturition, but the mechanisms responsible for this suppression remain unclear. We previously reported that intracerebroventricularly administered (±)-epibatidine (non-selective nAChR agonist) activated the sympatho-adrenomedullary system, which can affect the micturition. Therefore, we investigated (1) whether intracerebroventricularly administered (±)-epibatidine-induced effects on the micturition were dependent on the sympatho-adrenomedullary system, and (2) brain nAChR subtypes involved in the (±)-epibatidine-induced effects in urethane-anesthetized male Wistar rats. Plasma noradrenaline and adrenaline (catecholamines) were measured just before and 5 min after (±)-epibatidine administration. Evaluation of urodynamic parameters, intercontraction intervals (ICI) and maximal voiding pressure (MVP) by cystometry was started 1 h before (±)-epibatidine administration or intracerebroventricular pretreatment with other drugs and continued 1 h after (±)-epibatidine administration. Intracerebroventricularly administered (±)-epibatidine elevated plasma catecholamines and prolonged ICI without affecting MVP, and these changes were suppressed by intracerebroventricularly pretreated mecamylamine (non-selective nAChR antagonist). Acute bilateral adrenalectomy abolished the (±)-epibatidine-induced elevation of plasma catecholamines, but had no effect on the (±)-epibatidine-induced ICI prolongation. The latter was suppressed by intracerebroventricularly pretreated methyllycaconitine (selective α7-nAChR antagonist), SR95531 (GABAA antagonist), and SCH50911 (GABAB antagonist), but not by dihydro-β-erythroidine (selective α4β2-nAChR antagonist). Intracerebroventricularly administered PHA568487 (selective α7-nAChR agonist) prolonged ICI without affecting MVP, similar to (±)-epibatidine. These results suggest that stimulation of brain α7-nAChRs suppresses the rat micturition through brain GABAA/GABAB receptors, independently of the sympatho-adrenomedullary outflow modulation.
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Affiliation(s)
- Yohei Shimizu
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan; Center for Innovative and Translational Medicine, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Takahiro Shimizu
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan.
| | - Suo Zou
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Hideaki Ono
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan; Center for Innovative and Translational Medicine, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Yurika Hata
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan; Center for Innovative and Translational Medicine, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Masaki Yamamoto
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Takaaki Aratake
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan; Japan Society for the Promotion of Science, Japan
| | - Shogo Shimizu
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Youichirou Higashi
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Takashi Karashima
- Department of Urology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Motoaki Saito
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
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Bolchi C, Bavo F, Appiani R, Roda G, Pallavicini M. 1,4-Benzodioxane, an evergreen, versatile scaffold in medicinal chemistry: A review of its recent applications in drug design. Eur J Med Chem 2020; 200:112419. [PMID: 32502862 DOI: 10.1016/j.ejmech.2020.112419] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 04/14/2020] [Accepted: 05/02/2020] [Indexed: 12/11/2022]
Abstract
1,4-Benzodioxane has long been a versatile template widely employed to design molecules endowed with diverse bioactivities. Its use spans the last decades of medicinal chemistry until today concerning many strategies of drug discovery, not excluding the most advanced ones. Here, more than fifty benzodioxane-related lead compounds, selected from recent literature, are presented showing the different approaches with which they have been developed. Agonists and antagonists at neuronal nicotinic, α1 adrenergic and serotoninergic receptor subtypes and antitumor and antibacterial agents form the most representative classes, but a variety of other biological targets are addressed by benzodioxane-containing compounds.
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Affiliation(s)
- Cristiano Bolchi
- Dipartimento di Scienze Farmaceutiche, Università di Milano, Via Mangiagalli 25, I-20133, Milano, Italy
| | - Francesco Bavo
- Dipartimento di Scienze Farmaceutiche, Università di Milano, Via Mangiagalli 25, I-20133, Milano, Italy
| | - Rebecca Appiani
- Dipartimento di Scienze Farmaceutiche, Università di Milano, Via Mangiagalli 25, I-20133, Milano, Italy
| | - Gabriella Roda
- Dipartimento di Scienze Farmaceutiche, Università di Milano, Via Mangiagalli 25, I-20133, Milano, Italy
| | - Marco Pallavicini
- Dipartimento di Scienze Farmaceutiche, Università di Milano, Via Mangiagalli 25, I-20133, Milano, Italy.
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Durcik M, Toplak Ž, Zidar N, Ilaš J, Zega A, Kikelj D, Mašič LP, Tomašič T. Efficient Synthesis of Hydroxy-Substituted 2-Aminobenzo[ d]thiazole-6-carboxylic Acid Derivatives as New Building Blocks in Drug Discovery. ACS OMEGA 2020; 5:8305-8311. [PMID: 32309742 PMCID: PMC7161044 DOI: 10.1021/acsomega.0c00768] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 03/20/2020] [Indexed: 05/05/2023]
Abstract
Benzo[d]thiazole is widely used in synthetic and medicinal chemistry, and it is a component of many compounds and drugs that have several different bioactivities. Herein, we describe an elegant pathway for synthesis of methyl 4- and 5-hydroxy-2-amino-benzo[d]thiazole-6-carboxylates as building blocks that can be substituted at four different positions on the bicycle and thus offer the possibility to thoroughly explore the chemical space around the molecule studied as a ligand for the chosen target. A series of 12 new compounds was prepared using the described methods and Williamson ether synthesis.
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Jankowska A, Satała G, Partyka A, Wesołowska A, Bojarski AJ, Pawłowski M, Chłoń-Rzepa G. Discovery and Development of Non-Dopaminergic Agents for the Treatment of Schizophrenia: Overview of the Preclinical and Early Clinical Studies. Curr Med Chem 2019; 26:4885-4913. [PMID: 31291870 DOI: 10.2174/0929867326666190710172002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/11/2019] [Accepted: 06/14/2019] [Indexed: 02/05/2023]
Abstract
Schizophrenia is a chronic psychiatric disorder that affects about 1 in 100 people around the world and results in persistent emotional and cognitive impairments. Untreated schizophrenia leads to deterioration in quality of life and premature death. Although the clinical efficacy of dopamine D2 receptor antagonists against positive symptoms of schizophrenia supports the dopamine hypothesis of the disease, the resistance of negative and cognitive symptoms to these drugs implicates other systems in its pathophysiology. Many studies suggest that abnormalities in glutamate homeostasis may contribute to all three groups of schizophrenia symptoms. Scientific considerations also include disorders of gamma-aminobutyric acid-ergic and serotonergic neurotransmissions as well as the role of the immune system. The purpose of this review is to update the most recent reports on the discovery and development of non-dopaminergic agents that may reduce positive, negative, and cognitive symptoms of schizophrenia, and may be alternative to currently used antipsychotics. This review collects the chemical structures of representative compounds targeting metabotropic glutamate receptor, gamma-aminobutyric acid type A receptor, alpha 7 nicotinic acetylcholine receptor, glycine transporter type 1 and glycogen synthase kinase 3 as well as results of in vitro and in vivo studies indicating their efficacy in schizophrenia. Results of clinical trials assessing the safety and efficacy of the tested compounds have also been presented. Finally, attention has been paid to multifunctional ligands with serotonin receptor affinity or phosphodiesterase inhibitory activity as novel strategies in the search for dedicated medicines for patients with schizophrenia.
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Affiliation(s)
- Agnieszka Jankowska
- Department of Medicinal Chemistry, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland
| | - Grzegorz Satała
- Department of Medicinal Chemistry, Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna Street, 31-343 Krakow, Poland
| | - Anna Partyka
- Department of Clinical Pharmacy, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland
| | - Anna Wesołowska
- Department of Clinical Pharmacy, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland
| | - Andrzej J Bojarski
- Department of Medicinal Chemistry, Institute of Pharmacology, Polish Academy of Sciences, 12 Smetna Street, 31-343 Krakow, Poland
| | - Maciej Pawłowski
- Department of Medicinal Chemistry, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland
| | - Grażyna Chłoń-Rzepa
- Department of Medicinal Chemistry, Jagiellonian University Medical College, 9 Medyczna Street, 30-688 Krakow, Poland
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Tarnawski L, Reardon C, Caravaca AS, Rosas-Ballina M, Tusche MW, Drake AR, Hudson LK, Hanes WM, Li JH, Parrish WR, Ojamaa K, Al-Abed Y, Faltys M, Pavlov VA, Andersson U, Chavan SS, Levine YA, Mak TW, Tracey KJ, Olofsson PS. Adenylyl Cyclase 6 Mediates Inhibition of TNF in the Inflammatory Reflex. Front Immunol 2018; 9:2648. [PMID: 30538698 PMCID: PMC6277584 DOI: 10.3389/fimmu.2018.02648] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 10/26/2018] [Indexed: 01/09/2023] Open
Abstract
Macrophage cytokine production is regulated by neural signals, for example in the inflammatory reflex. Signals in the vagus and splenic nerves are relayed by choline acetyltransferase+ T cells that release acetylcholine, the cognate ligand for alpha7 nicotinic acetylcholine subunit-containing receptors (α7nAChR), and suppress TNF release in macrophages. Here, we observed that electrical vagus nerve stimulation with a duration of 0.1–60 s significantly reduced systemic TNF release in experimental endotoxemia. This suppression of TNF was sustained for more than 24 h, but abolished in mice deficient in the α7nAChR subunit. Exposure of primary human macrophages and murine RAW 264.7 macrophage-like cells to selective ligands for α7nAChR for 1 h in vitro attenuated TNF production for up to 24 h in response to endotoxin. Pharmacological inhibition of adenylyl cyclase (AC) and knockdown of adenylyl cyclase 6 (AC6) or c-FOS abolished cholinergic suppression of endotoxin-induced TNF release. These findings indicate that action potentials in the inflammatory reflex trigger a change in macrophage behavior that requires AC and phosphorylation of the cAMP response element binding protein (CREB). These observations further our mechanistic understanding of neural regulation of inflammation and may have implications for development of bioelectronic medicine treatment of inflammatory diseases.
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Affiliation(s)
- Laura Tarnawski
- Department of Medicine, Center for Bioelectronic Medicine, Center for Molecular Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Colin Reardon
- Department of Anatomy, Physiology & Cell Biology, University of California, Davis, Davis, CA, United States
| | - April S Caravaca
- Department of Medicine, Center for Bioelectronic Medicine, Center for Molecular Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Mauricio Rosas-Ballina
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Michael W Tusche
- The Campbell Family Institute for Breast Cancer Research, University Health Network, Toronto, ON, Canada
| | | | - LaQueta K Hudson
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - William M Hanes
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Jian Hua Li
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - William R Parrish
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Kaie Ojamaa
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY, United States
| | - Yousef Al-Abed
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | | | - Valentin A Pavlov
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Ulf Andersson
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States.,Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Sangeeta S Chavan
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | | | - Tak W Mak
- The Campbell Family Institute for Breast Cancer Research, University Health Network, Toronto, ON, Canada
| | - Kevin J Tracey
- Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
| | - Peder S Olofsson
- Department of Medicine, Center for Bioelectronic Medicine, Center for Molecular Medicine, Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.,Laboratory of Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, United States
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11
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Gupta D, Lacayo AA, Greene SM, Leahy JL, Jetton TL. β-Cell mass restoration by α7 nicotinic acetylcholine receptor activation. J Biol Chem 2018; 293:20295-20306. [PMID: 30397183 DOI: 10.1074/jbc.ra118.004617] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 10/26/2018] [Indexed: 12/21/2022] Open
Abstract
Although it is well-established how nutrients, growth factors, and hormones impact functional β-cell mass (BCM), the influence of the central nervous system in this regard, and especially in the context of islet immune modulation, has been understudied. Here we investigated the expression and activity of pancreatic islet α7 nicotinic acetylcholine receptor (α7nAChR) in islet anti-inflammatory and prosurvival signaling. Systemic administration of α7nAChR agonists in mice improved glucose tolerance and curtailed streptozotocin-induced hyperglycemia by retaining BCM, in part through maintaining Pdx1 and MafA expression and reducing apoptosis. α7nAChR activation of mouse islets ex vivo led to reduced inflammatory drive through a JAK2-STAT3 pathway that couples with CREB/Irs2/Akt survival signaling. Because the vagus nerve conveys anti-inflammatory signals to immune cells of the spleen and other nonneural tissues in the viscera by activating α7nAChR agonists, our study suggests a novel role for β-cell α7nAChR that functions to maintain β-cell survival and mass homeostasis through modulating islet cytokine and phosphatidylinositol 3-kinase-dependent signaling pathways. Exploiting these pathways may have therapeutic potential for the treatment of autoimmune diabetes.
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Affiliation(s)
- Dhananjay Gupta
- From the Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont 05446
| | - Adam A Lacayo
- From the Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont 05446
| | - Shane M Greene
- From the Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont 05446
| | - John L Leahy
- From the Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont 05446
| | - Thomas L Jetton
- From the Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, Vermont 05446.
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12
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Mikawa S, Kondo M, Kaji N, Mihara T, Yoshitake R, Nakagawa T, Takamoto M, Nishimura R, Shimada S, Ozaki H, Hori M. Serotonin 3 receptor signaling regulates 5-fluorouracil-mediated apoptosis indirectly via TNF-α production by enhancing serotonin release from enterochromaffin cells. FASEB J 2018; 33:1669-1680. [PMID: 30207796 DOI: 10.1096/fj.201701200rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Antagonists of the 5-hydroxytryptamine (serotonin) 3 receptor (5-HT3R) have anti-inflammatory and anti-apoptotic activities, but the detailed, underlying mechanisms are not well understood. We focused on anti-apoptotic activities via 5-HT3R signaling to clarify the underlying mechanisms. Mice were administered 5-fluorouracil (5-FU), which induced apoptosis in intestinal epithelial cells. Coadministration with 5-HT3R antagonists or agonists tended to decrease or increase the number of apoptotic cells, respectively. In serotonin 3A receptor (5-HT3AR) null (HTR3A-/-) mice, the number of apoptotic cells induced by 5-FU was decreased compared with that in wild-type (WT) mice. Bone marrow (BM) transplantation was performed to determine if BM-derived immune cells regulated 5-FU-induced apoptosis, but they were found to be unrelated to this process. Data from 5-HT3AR/enhanced green fluorescent protein reporter mice revealed that 50% of enterochromaffin (EC) cells expressed 5-HT3AR, but the number of apoptotic cells induced by 5-FU in the intestinal crypt organoids of HTR3A-/- mice was not altered compared with WT mice. In contrast, plasma 5-HT concentrations in WT mice but not in HTR3A-/- mice administered 5-FU were increased significantly. In conclusion, 5-HT3R signaling may enhance 5-HT release, possibly from EC cells intravascularly, or paracrine, resulting in increases in plasma 5-HT concentration, which in turn, enhances apoptotic activities induced by 5-FU.-Mikawa, S., Kondo, M., Kaji, N., Mihara, T., Yoshitake, R., Nakagawa, T., Takamoto, M., Nishimura, R., Shimada, S., Ozaki, H., Hori, M. Serotonin 3 receptor signaling regulates 5-fluorouracil-mediated apoptosis indirectly via TNF-α production by enhancing serotonin release from enterochromaffin cells.
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Affiliation(s)
- Shoma Mikawa
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Makoto Kondo
- Department of Neuroscience and Cell Biology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Noriyuki Kaji
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Taiki Mihara
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Ryohei Yoshitake
- Laboratory of Veterinary Surgery, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Takayuki Nakagawa
- Laboratory of Veterinary Surgery, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Masaya Takamoto
- Department of Infection and Host Defense and Pathobiology, Shinshu University School of Medicine, Nagano, Japan
| | - Ryohei Nishimura
- Laboratory of Veterinary Surgery, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Shoichi Shimada
- Department of Neuroscience and Cell Biology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Hiroshi Ozaki
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Masatoshi Hori
- Department of Veterinary Pharmacology, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
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13
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Li DJ, Liu J, Hua X, Fu H, Huang F, Fei YB, Lu WJ, Shen FM, Wang P. Nicotinic acetylcholine receptor α7 subunit improves energy homeostasis and inhibits inflammation in nonalcoholic fatty liver disease. Metabolism 2018; 79:52-63. [PMID: 29129819 DOI: 10.1016/j.metabol.2017.11.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 10/31/2017] [Accepted: 11/04/2017] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Nonalcoholic fatty liver disease (NAFLD) is one of the most common liver diseases worldwide; yet, the pathogenesis of the disorder is not completely understood. The nicotinic acetylcholine receptor α7 subunit (α7nAChR) plays an indispensable role in the vagus nerve-regulated cholinergic anti-inflammatory pathway. METHODS In the present study, we investigated the key role of α7nAChR in NAFLD development. Male wild-type (WT) and α7nAChR knockout (α7nAChR-/-) mice were fed a normal chow or a high-fat diet (HFD) for 16weeks to induce NAFLD. RESULTS We found that both the mRNA and protein levels of α7nAChR in the liver tissue of NAFLD mice were significantly higher than those in mice fed normal chow. There were no differences in food intake, body weight, hepatic cholesterol and triglyceride contents, and insulin sensitivity between WT and α7nAChR-/- mice under normal condition. When the WT and α7nAChR-/- mice were challenged with HFD, the body weight of α7nAChR-/- mice became higher than that of WT mice. The oxygen consumption and energy expenditure in HFD-fed α7nAChR-/- mice were significantly lower than that in HFD-fed WT mice. The HFD-fed α7nAChR-/- mice also showed more aggravated hepatic lipid accumulation, steatosis and oxidative stress than HFD-fed WT mice. Macrophage infiltration; mRNA levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and IL-1β; and liver fibrosis were significantly accelerated in HFD-fed α7nAChR-/- mice compared to that in HFD-fed WT mice. In addition, the bolus insulin injection-activated insulin signaling pathway, which was reflected by the phosphorylation of insulin receptor at Tyr1162/Tyr1163 site (p-IRTyr1162/Tyr1163), insulin receptor substrate-1 at Tyr612 site (p-IRS-1Tyr612) and Akt at Ser473 (p-AktSer473), was significantly compromised in liver tissues of HFD-fed α7nAChR-/- mice relative to HFD-fed WT mice. Finally, pharmacologically activation of α7nAChR in HFD-fed mice, with a selective agonist PNU-282987, remarkably ameliorated the hepatic steatosis, inflammatory cell infiltration and fibrosis. CONCLUSION In conclusion, our results demonstrate that activation of α7nAChR improves energy homeostasis and inhibits inflammation in nonalcoholic fatty liver disease.
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Affiliation(s)
- Dong-Jie Li
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China; Department of Pharmacology, School of Medicine, Tongji University, Shanghai, China
| | - Jian Liu
- Department of Biliary Tract Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Xia Hua
- Department of Pharmacology, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Hui Fu
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China; Department of Pharmacology, School of Medicine, Tongji University, Shanghai, China
| | - Fang Huang
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China; Department of Pharmacology, School of Medicine, Tongji University, Shanghai, China
| | - Yi-Bo Fei
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China; Department of Pharmacology, School of Medicine, Tongji University, Shanghai, China
| | - Wen-Jie Lu
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China; Department of Pharmacology, School of Medicine, Tongji University, Shanghai, China
| | - Fu-Ming Shen
- Department of Pharmacy, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China; Department of Pharmacology, School of Medicine, Tongji University, Shanghai, China.
| | - Pei Wang
- Department of Pharmacology, School of Medicine, Tongji University, Shanghai, China; Department of Pharmacology, School of Pharmacy, Second Military Medical University, Shanghai, China.
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14
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Zou D, Luo M, Han Z, Zhan L, Zhu W, Kang S, Bao C, Li Z, Nelson J, Zhang R, Su H. Activation of Alpha-7 Nicotinic Acetylcholine Receptor Reduces Brain Edema in Mice with Ischemic Stroke and Bone Fracture. Mol Neurobiol 2017; 54:8278-8286. [PMID: 27914011 PMCID: PMC5457363 DOI: 10.1007/s12035-016-0310-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 11/21/2016] [Indexed: 01/30/2023]
Abstract
Stroke is an important risk factor for bone fracture. We showed previously that bone fracture at the acute stage of ischemic stroke worsens, and activation of α-7 nicotinic acetylcholine receptor (α-7 nAchR) improves, stroke recovery by attenuating inflammation. We hypothesized that activation of α-7 nAchR also improves the blood-brain barrier (BBB) integrity. Permanent distal middle cerebral artery occlusion (pMCAO) was performed on C57BL/6J mice followed by tibia fracture 1 day later. Mice were treated with 0.8 mg/kg PHA 568487 (PHA, α-7 nAchR-specific agonist), 6 mg/kg methyllycaconitine (MLA, α-7 nAchR antagonist), or saline 1 and 2 days after pMCAO. Brain water content, the expression of monoamine oxidase B (MAO-B), and tight junction protein (claudin-5) were assessed. We found that tibia fracture increased water content in the ischemic stroke brain (p = 0.006) and MAO-B-positive astrocytes (p < 0.001). PHA treatment reduced water content and MAO-B-positive astrocytes and increased claudin-5 expression in stroke and stroke + tibia fracture mice (p < 0.05), while MLA had the opposite effect. Our findings suggest that in addition to inhibiting inflammation, activation of α-7 nAchR also reduces brain edema, possibly through diminished astrocyte oxidative stress and improved BBB integrity. Thus, the α-7 nAchR-specific agonist could be developed into a new therapy for improving recovery of patients with stroke or stroke + bone fracture.
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Affiliation(s)
- Dingquan Zou
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
- Department of Anesthesiology, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Man Luo
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
- Department of Neurology, First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, China
| | - Zhenying Han
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Lei Zhan
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Wan Zhu
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Shuai Kang
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Chen Bao
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Zhao Li
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Jeffrey Nelson
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Rui Zhang
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Hua Su
- Department of Anesthesia and Perioperative Care, Center for Cerebrovascular Research, University of California, San Francisco, San Francisco, CA, 94143, USA.
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15
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Evidence of BrdU-positive retinal neurons after application of an Alpha7 nicotinic acetylcholine receptor agonist. Neuroscience 2017; 346:437-446. [PMID: 28147247 DOI: 10.1016/j.neuroscience.2017.01.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 01/16/2017] [Accepted: 01/17/2017] [Indexed: 11/23/2022]
Abstract
Irreversible vision loss due to disease or age is responsible for a reduced quality of life. The experiments in this study test the hypothesis that the α7 nicotinic acetylcholine receptor agonist, PNU-282987, leads to the generation of retinal neurons in an adult mammalian retina in the absence of retinal injury or exogenous growth factors. Using antibodies against BrdU, retinal ganglion cells, progenitor cells and Müller glia, the results of this study demonstrate that multiple types of retinal cells and neurons are generated after eye drop application of PNU-282987 in adult Long Evans rats in a dose-dependent manner. The results of this study provide evidence that progenitor cells, derived from Müller glia after treatment with PNU-282987, differentiate and migrate to the photoreceptor and retinal ganglion cell layers. If retinas were treated with the alpha7 nAChR antagonist, methyllycaconitine, before agonist treatment, BrdU-positive cells were significantly reduced. As adult mammalian neurons do not typically regenerate or proliferate, these results have implications for reversing vision loss due to neurodegenerative disease or the aging process to improve the quality of life for millions of patients.
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16
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Pinheiro NM, Santana FPR, Almeida RR, Guerreiro M, Martins MA, Caperuto LC, Câmara NOS, Wensing LA, Prado VF, Tibério IFLC, Prado MAM, Prado CM. Acute lung injury is reduced by the α7nAChR agonist PNU-282987 through changes in the macrophage profile. FASEB J 2016; 31:320-332. [PMID: 27729414 DOI: 10.1096/fj.201600431r] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 09/28/2016] [Indexed: 11/11/2022]
Abstract
Nicotinic α-7 acetylcholine receptor (nAChRα7) is a critical regulator of cholinergic anti-inflammatory actions in several diseases, including acute respiratory distress syndrome (ARDS). Given the potential importance of α7nAChR as a therapeutic target, we evaluated whether PNU-282987, an α7nAChR agonist, is effective in protecting the lung against inflammation. We performed intratracheal instillation of LPS to generate acute lung injury (ALI) in C57BL/6 mice. PNU-282987 treatment, either before or after ALI induction, reduced neutrophil recruitment and IL-1β, TNF-α, IL-6, keratinocyte chemoattractant (KC), and IL-10 cytokine levels in the bronchoalveolar lavage fluid (P < 0.05). In addition, lung NF-κB phosphorylation decreased, along with collagen fiber deposition and the number of matrix metalloproteinase-9+ and -2+ cells, whereas the number of tissue inhibitor of metalloproteinase-1+ cells increased (P < 0.05). PNU-282987 treatment also reduced lung mRNA levels and the frequency of M1 macrophages, whereas cells expressing the M2-related markers CD206 and IL-10 increased, suggesting changes in the macrophage profile. Finally, PNU-282987 improved lung function in LPS-treated animals. The collective results suggest that PNU-282987, an agonist of α7nAChR, reduces LPS-induced experimental ALI, thus supporting the notion that drugs that act on α7nAChRs should be explored for ARDS treatment in humans.-Pinheiro, N. M., Santana, F. P. R., Almeida, R. R., Guerreiro, M., Martins, M. A., Caperuto, L. C., Câmara, N. O. S., Wensing, L. A., Prado, V. F., Tibério, I. F. L. C., Prado, M. A. M., Prado, C. M. Acute lung injury is reduced by the α7nAChR agonist PNU-282987 through changes in the macrophage profile.
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Affiliation(s)
- Nathalia M Pinheiro
- Department of Medicine, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Fernanda P R Santana
- Department of Medicine, School of Medicine, Universidade de São Paulo, São Paulo, Brazil.,Department of Biological Science, Universidade Federal de São Paulo, Diadema, Brazil
| | | | - Marina Guerreiro
- Department of Biological Science, Universidade Federal de São Paulo, Diadema, Brazil
| | - Milton A Martins
- Department of Medicine, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Luciana C Caperuto
- Department of Biological Science, Universidade Federal de São Paulo, Diadema, Brazil
| | - Niels O S Câmara
- Department of Immunology, Universidade de São Paulo, São Paulo, Brazil
| | | | - Vânia F Prado
- Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada.,Department of Anatomy and Cell Biology, University of Western Ontario, London, Ontario, Canada; and
| | - Iolanda F L C Tibério
- Department of Medicine, School of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | - Marco Antônio M Prado
- Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada.,Department of Anatomy and Cell Biology, University of Western Ontario, London, Ontario, Canada; and
| | - Carla M Prado
- Department of Medicine, School of Medicine, Universidade de São Paulo, São Paulo, Brazil; .,Department of Bioscience, Federal University of São Paulo, Campus Baixada Santista, Santos, Brazil
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17
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Suneja A, Bisai V, Singh VK. Asymmetric Syntheses of Medicinally Important Isoindolinones (S)-PD 172938, (R)-JM 1232, and Related Structures. J Org Chem 2016; 81:4779-88. [DOI: 10.1021/acs.joc.6b00770] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arun Suneja
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, MP - 462 066, India
| | | | - Vinod K. Singh
- Department
of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhopal, MP - 462 066, India
- Indian Institute of Technology Kanpur, Kanpur, UP - 208 016, India
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18
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Novel morpholin-3-one fused quinazoline derivatives as EGFR tyrosine kinase inhibitors. Bioorg Med Chem Lett 2016; 26:1571-1575. [PMID: 26879314 DOI: 10.1016/j.bmcl.2016.02.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/01/2016] [Accepted: 02/04/2016] [Indexed: 11/23/2022]
Abstract
A series of novel morpholin-3-one-fused quinazoline derivatives were designed, synthesized and evaluated as EGFR tyrosine kinase inhibitors. Nineteen compounds showed significant inhibitory activities against EGFR(wt) kinase (IC50<1 μM). Compound a8 demonstrated the most potent inhibitory activity toward EGFR(wt) (IC50=53.1 nM). Compound a7 and a8 showed excellent inhibitory activities against mutant EGFR(T790M/L858R) and strong antiproliferative activity against H358 and A549 cell lines. Finally, molecular docking studies were performed to predict the possible binding mode of the target compounds. It is believed that this work would be very useful for designing a new series of tyrosine kinase inhibitors targeting EGFR.
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19
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Bertrand D, Lee CHL, Flood D, Marger F, Donnelly-Roberts D. Therapeutic Potential of α7 Nicotinic Acetylcholine Receptors. Pharmacol Rev 2015; 67:1025-73. [DOI: 10.1124/pr.113.008581] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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20
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Uteshev V. Are positive allosteric modulators of α7 nAChRs clinically safe? J Neurochem 2015; 136:217-9. [PMID: 26182952 DOI: 10.1111/jnc.13236] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 07/02/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Victor Uteshev
- Department of Pharmacology & Neuroscience, Institute of Aging and Alzheimer's Disease Research, University of North Texas Health Science Center, Fort Worth, Texas, USA
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21
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22
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Mata D, Linn DM, Linn CL. Retinal ganglion cell neuroprotection induced by activation of alpha7 nicotinic acetylcholine receptors. Neuropharmacology 2015; 99:337-46. [PMID: 26239818 DOI: 10.1016/j.neuropharm.2015.07.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 07/28/2015] [Accepted: 07/29/2015] [Indexed: 10/23/2022]
Abstract
The α7nAChR agonist, PNU-282987, has previously been shown to have a neuroprotective effect against loss of retinal ganglion cells (RGCs) in an in vivo glaucoma model when the agent was injected into the vitreous chamber of adult Long Evans rat eyes. Here, we characterized the neuroprotective effect of PNU-282987 at the nerve fiber and retinal ganglion cell layer, determined that neuroprotection occurred when the agonist was applied as eye drops and verified detection of the agonist in the retina, using LC/MS/MS. To induce glaucoma-like conditions in adult Long Evans rats, hypertonic saline was injected into the episcleral veins to induce scar tissue and increase intraocular pressure. Within one month, this procedure produced significant loss of RGCs compared to untreated conditions. RGCs were quantified after immunostaining with an antibody against Thy 1.1 and imaged using a confocal microscope. In dose-response studies, concentrations of PNU-282987 were applied to the animal's right eye two times each day, while the left eye acted as an internal control. Eye drops of PNU-282987 resulted in neuroprotection against RGC loss in a dose-dependent manner using concentrations between 100 μM and 2 mM PNU-282987. LC/MS/MS results demonstrated that PNU-282987 was detected in the retina when applied as eye drops, relatively small amounts of PNU-282987 were measured in blood plasma and no PNU-282987 was detected in cardiac tissue. These results support the hypothesis that eye drop application of PNU-282987 can prevent loss of RGCs associated with glaucoma, which can lead to neuroprotective treatments for diseases that involve α7nAChRs.
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Affiliation(s)
- David Mata
- Western Michigan University, Department of Biological Sciences, Kalamazoo, MI 49008, USA.
| | - David M Linn
- Grand Valley State University, Department of Biomedical Sciences, Allendale, MI 49401, USA.
| | - Cindy L Linn
- Western Michigan University, Department of Biological Sciences, Kalamazoo, MI 49008, USA.
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23
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Minami SS, Shen V, Le D, Krabbe G, Asgarov R, Perez-Celajes L, Lee CH, Li J, Donnelly-Roberts D, Gan L. Reducing inflammation and rescuing FTD-related behavioral deficits in progranulin-deficient mice with α7 nicotinic acetylcholine receptor agonists. Biochem Pharmacol 2015. [PMID: 26206194 DOI: 10.1016/j.bcp.2015.07.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Mutations in the progranulin gene cause frontotemporal dementia (FTD), a debilitating neurodegenerative disease that involves atrophy of the frontal and temporal lobes and affects personality, behavior, and language. Progranulin-deficient mouse models of FTD exhibit deficits in compulsive and social behaviors reminiscent of patients with FTD, and develop excessive microgliosis and increased release of inflammatory cytokines. Activation of nicotinic acetylcholine receptors (nAChRs) by nicotine or specific α7 nAChR agonists reduces neuroinflammation. Here, we investigated whether activation of nAChRs by nicotine or α7 agonists improved the excessive inflammatory and behavioral phenotypes of a progranulin-deficient FTD mouse model. We found that treatment with selective α7 agonists, PHA-568487 or ABT-107, strongly suppressed the activation of NF-κB in progranulin-deficient cells. Treatment with ABT-107 also reduced microgliosis, decreased TNFα levels, and reduced compulsive behavior in progranulin-deficient mice. Collectively, these data suggest that targeting activation of the α7 nAChR pathway may be beneficial in decreasing neuroinflammation and reversing some of the behavioral deficits observed in progranulin-deficient FTD.
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Affiliation(s)
- S Sakura Minami
- Gladstone Institute of Neurological Diseases, 1650 Owens St., San Francisco, CA 94158, United States; Department of Neurology, University of California, San Francisco, CA 94158, United States
| | - Vivian Shen
- Gladstone Institute of Neurological Diseases, 1650 Owens St., San Francisco, CA 94158, United States
| | - David Le
- Gladstone Institute of Neurological Diseases, 1650 Owens St., San Francisco, CA 94158, United States
| | - Grietje Krabbe
- Gladstone Institute of Neurological Diseases, 1650 Owens St., San Francisco, CA 94158, United States; Department of Neurology, University of California, San Francisco, CA 94158, United States
| | - Rustam Asgarov
- Gladstone Institute of Neurological Diseases, 1650 Owens St., San Francisco, CA 94158, United States; Graduate Program in Neurochemistry and Molecular Neurobiology, Stockholm University, Sweden
| | - Liberty Perez-Celajes
- Gladstone Institute of Neurological Diseases, 1650 Owens St., San Francisco, CA 94158, United States
| | | | - Jinhe Li
- AbbVie Inc., North Chicago, IL 60064, United States
| | | | - Li Gan
- Gladstone Institute of Neurological Diseases, 1650 Owens St., San Francisco, CA 94158, United States; Department of Neurology, University of California, San Francisco, CA 94158, United States.
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Beinat C, Banister SD, Herrera M, Law V, Kassiou M. The therapeutic potential of α7 nicotinic acetylcholine receptor (α7 nAChR) agonists for the treatment of the cognitive deficits associated with schizophrenia. CNS Drugs 2015; 29:529-42. [PMID: 26242477 DOI: 10.1007/s40263-015-0260-0] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Homomeric α7 nicotinic acetylcholine receptors (α7 nAChRs) have implications in the regulation of cognitive processes such as memory and attention, and have shown promise as a therapeutic target for the treatment of the cognitive deficits associated with schizophrenia. Multiple α7 nAChR agonists have entered human trials; however, unfavorable side effects and pharmacokinetic issues have hindered the development of a clinical α7 nAChR agonist. Currently, EVP-6124 is in phase III clinical trials, and several other α7 nAChR agonists (GTS-21 and AQW051) are in earlier stages of development. This review will summarize the recent advances and failures of α7 nAChR agonists in clinical trials for the treatment of the aforementioned pathology.
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Affiliation(s)
- Corinne Beinat
- Department of Radiology, Stanford University School of Medicine, Stanford, CA, 94305, USA
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25
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Arunrungvichian K, Boonyarat C, Fokin VV, Taylor P, Vajragupta O. Cognitive Improvements in a Mouse Model with Substituted 1,2,3-Triazole Agonists for Nicotinic Acetylcholine Receptors. ACS Chem Neurosci 2015; 6:1331-40. [DOI: 10.1021/acschemneuro.5b00059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Kuntarat Arunrungvichian
- Center
of Excellence for Innovation in Drug Design and Discovery, Faculty
of Pharmacy, Mahidol University, 447 Sri-Ayudhya Road, Bangkok 10400, Thailand
| | - Chantana Boonyarat
- Department
of Pharmaceutical Chemistry, Faculty of Pharmaceutical Science, KhonKaen University, 123 Muang, KhonKaen 40002, Thailand
| | - Valery V. Fokin
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Palmer Taylor
- Department
of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0650, United States
| | - Opa Vajragupta
- Center
of Excellence for Innovation in Drug Design and Discovery, Faculty
of Pharmacy, Mahidol University, 447 Sri-Ayudhya Road, Bangkok 10400, Thailand
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26
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Hashimoto K. Targeting of α7 Nicotinic Acetylcholine Receptors in the Treatment of Schizophrenia and the Use of Auditory Sensory Gating as a Translational Biomarker. Curr Pharm Des 2015; 21:3797-806. [PMID: 26044974 PMCID: PMC5024727 DOI: 10.2174/1381612821666150605111345] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 06/04/2015] [Indexed: 11/22/2022]
Abstract
Accumulating evidence suggests that the α7 subtype of nicotinic acetylcholine receptors (nAChRs) plays a key role in inflammatory processes, thought to be involved in the pathophysiology of neuropsychiatric diseases, such as schizophrenia and Alzheimer's disease. Preclinical and clinical studies showed that the diminished suppression of P50 auditory evoked potentials in patients with schizophrenia may be associated with a decreased density of α7 nAChRs in the brain. This points to a role for auditory sensory gating (P50) as a translational biomarker. A number of agonists and positive allosteric modulators (PAMs) for α7 nAChR promoted beneficial effects in animal models with sensory gating and cognitive deficits. Additionally, several clinical studies showed that α7 nAChR agonists could improve suppression in auditory P50 evoked potentials, as well as cognitive deficits, and negative symptoms in patients with schizophrenia. Taken together, α7 nAChR presents as an extremely attractive therapeutic target for schizophrenia. In this article, the author discusses recent findings on α7 nAChR agonists such as DMXB-A, RG3487, TC-5619, tropisetron, EVP-6124 (encenicline), ABT-126, AQW051 and α7 nAChR PAMs such as JNJ-39393406, PNU- 120596 and AVL-3288 (also known as UCI-4083), and their potential as therapeutic drugs for neuropsychiatric diseases, such as schizophrenia.
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Affiliation(s)
- Kenji Hashimoto
- Division of Clinical Neuroscience, Chiba University Center for Forensic, Mental Health, 1-8-1 Inohana, Chiba 260-8670, Japan.
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27
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Abstract
Elucidating the roles of neuronal cell types for physiology and behavior is essential for understanding brain functions. Perturbation of neuron electrical activity can be used to probe the causal relationship between neuronal cell types and behavior. New genetically encoded neuron perturbation tools have been developed for remotely controlling neuron function using small molecules that activate engineered receptors that can be targeted to cell types using genetic methods. Here we describe recent progress for approaches using genetically engineered receptors that selectively interact with small molecules. Called "chemogenetics," receptors with diverse cellular functions have been developed that facilitate the selective pharmacological control over a diverse range of cell-signaling processes, including electrical activity, for molecularly defined cell types. These tools have revealed remarkably specific behavioral physiological influences for molecularly defined cell types that are often intermingled with populations having different or even opposite functions.
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Affiliation(s)
- Scott M Sternson
- Janelia Farm Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia 20147;
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28
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Design of α7 nicotinic acetylcholine receptor ligands in quinuclidine, tropane and quinazoline series. Chemistry, molecular modeling, radiochemistry, in vitro and in rats evaluations of a [18F] quinuclidine derivative. Eur J Med Chem 2014; 82:214-24. [DOI: 10.1016/j.ejmech.2014.04.057] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/17/2014] [Accepted: 04/19/2014] [Indexed: 12/23/2022]
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29
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Clark RB, Lamppu D, Libertine L, McDonough A, Kumar A, LaRosa G, Rush R, Elbaum D. Discovery of novel 2-((pyridin-3-yloxy)methyl)piperazines as α7 nicotinic acetylcholine receptor modulators for the treatment of inflammatory disorders. J Med Chem 2014; 57:3966-83. [PMID: 24814197 DOI: 10.1021/jm5004599] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Herein we report the design, synthesis, and structure-activity relationships for a new class of α7 nicotinic acetylcholine receptor (nAChR) modulators based on the 2-((pyridin-3-yloxy)methyl)piperazine scaffold. The oxazolo[4,5-b]pyridine, (R)-18, and 4-methoxyphenylurea, (R)-47, were identified as potent and selective modulators of the α7 nAChR with favorable in vitro safety profiles and good oral bioavailability in mouse. Both compounds were shown to significantly inhibit cellular infiltration in a murine model of allergic lung inflammation. Despite the structural and in vivo functional similarities in the compounds, only (R)-18 was shown to be an agonist. Compound (R)-47 demonstrated silent agonist activity. These data support the hypothesis that the anti-inflammatory activity of the α7 nAChR is mediated by a signal transduction pathway that is independent of ion current.
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Affiliation(s)
- Roger B Clark
- Critical Therapeutics, Inc. , 60 Westview Street, Lexington, Massachusetts 02421, United States
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30
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Involvement of α7 nAChR subtype in rat oxaliplatin-induced neuropathy: Effects of selective activation. Neuropharmacology 2014; 79:37-48. [DOI: 10.1016/j.neuropharm.2013.10.034] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 10/14/2013] [Accepted: 10/28/2013] [Indexed: 12/12/2022]
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31
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Zwart R, Strotton M, Ching J, Astles PC, Sher E. Unique pharmacology of heteromeric α7β2 nicotinic acetylcholine receptors expressed in Xenopus laevis oocytes. Eur J Pharmacol 2014; 726:77-86. [DOI: 10.1016/j.ejphar.2014.01.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 01/13/2014] [Accepted: 01/21/2014] [Indexed: 12/16/2022]
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32
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Pandey G, Dey D, Fernandes R. Scalable Synthesis of Enantiomerically Pure cis-1,2-Cyclohexanediamine Derivatives and Conformationally Rigid 7-Azabicyclo[2.2.1]heptan-2-amines. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Contribution of α7 nicotinic receptor to airway epithelium dysfunction under nicotine exposure. Proc Natl Acad Sci U S A 2013; 110:4099-104. [PMID: 23431157 DOI: 10.1073/pnas.1216939110] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Loss or dysfunction of the cystic fibrosis (CF) transmembrane conductance regulator (CFTR) leads to impairment of airway mucus transport and to chronic lung diseases resulting in progressive respiratory failure. Nicotinic acetylcholine receptors (nAChRs) bind nicotine and nicotine-derived nitrosamines and thus mediate many of the tobacco-related deleterious effects in the lung. Here we identify α7 nAChR as a key regulator of CFTR in the airways. The airway epithelium in α7 knockout mice is characterized by a higher transepithelial potential difference, an increase of amiloride-sensitive apical Na(+) absorption, a defective cAMP-dependent Cl(-) conductance, higher concentrations of Na(+), Cl(-), K(+), and Ca(2+) in secretions, and a decreased mucus transport, all relevant to a deficient CFTR activity. Moreover, prolonged nicotine exposure mimics the absence of α7 nAChR in mice or its inactivation in vitro in human airway epithelial cell cultures. The functional coupling of α7 nAChR to CFTR occurs through Ca(2+) entry and activation of adenylyl cyclases, protein kinase A, and PKC. α7 nAChR, CFTR, and adenylyl cyclase-1 are physically and functionally associated in a macromolecular complex within lipid rafts at the apical membrane of surface and glandular airway epithelium. This study establishes the potential role of α7 nAChR in the regulation of CFTR function and in the pathogenesis of smoking-related chronic lung diseases.
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34
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Nicotinic acetylcholine receptors: From basic science to therapeutics. Pharmacol Ther 2013; 137:22-54. [DOI: 10.1016/j.pharmthera.2012.08.012] [Citation(s) in RCA: 382] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Accepted: 08/20/2012] [Indexed: 12/14/2022]
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35
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Wallace TL, Bertrand D. Alpha7 neuronal nicotinic receptors as a drug target in schizophrenia. Expert Opin Ther Targets 2012; 17:139-55. [PMID: 23231385 DOI: 10.1517/14728222.2013.736498] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Schizophrenia is a profoundly debilitating disease that represents not only an individual, but a societal problem. Once characterized solely by the hyperactivity of the dopaminergic system, therapies directed to dampen dopaminergic neurotransmission were developed. However, these drugs do not address the significant impairments in cognition and the negative symptoms of the disease, and it is now apparent that disequilibrium of many neurotransmitter systems is involved. Despite enormous efforts, minimal progress has been made toward the development of safer, more effective therapies to date. AREAS COVERED The high preponderance of smoking in schizophrenics suggests that nicotine may provide symptomatic improvement, which has led to investigation for selective molecules targeted to individual nicotinic receptor (nAChR) subtypes. Of special interest is activation of the homomeric α7nAChR, which is widely distributed in the brain and has been implicated in the pathophysiology of schizophrenia through numerous approaches. EXPERT OPINION Preclinical and clinical data suggest that neuronal α7nAChRs play an important role in cognitive functions. Moreover, some, but not all, early clinical trials conducted with α7nAChR agonists show cognitive benefits in schizophrenics. These encouraging results suggest that development of compounds targeting α7nAChRs will represent a valuable tool to mitigate symptoms associated with schizophrenia, and open new strategies for better pharmacological treatment of these patients.
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Affiliation(s)
- Tanya L Wallace
- SRI International, 333 Ravenswood Avenue, Menlo Park, CA, USA
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36
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Mazurov AA, Kombo DC, Hauser TA, Miao L, Dull G, Genus JF, Fedorov NB, Benson L, Sidach S, Xiao Y, Hammond PS, James JW, Miller CH, Yohannes D. Discovery of (2S,3R)-N-[2-(Pyridin-3-ylmethyl)-1-azabicyclo[2.2.2]oct-3-yl]benzo[b]furan-2-carboxamide (TC-5619), a Selective α7 Nicotinic Acetylcholine Receptor Agonist, for the Treatment of Cognitive Disorders. J Med Chem 2012; 55:9793-809. [DOI: 10.1021/jm301048a] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anatoly A. Mazurov
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - David C. Kombo
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Terry A. Hauser
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Lan Miao
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Gary Dull
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - John F. Genus
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Nikolai B. Fedorov
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Lisa Benson
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Serguei Sidach
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Yunde Xiao
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Philip S. Hammond
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - John W. James
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Craig H. Miller
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
| | - Daniel Yohannes
- Targacept, Inc., Winston-Salem, North
Carolina 27101-4165,
United States
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37
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Hijioka M, Matsushita H, Ishibashi H, Hisatsune A, Isohama Y, Katsuki H. α7 Nicotinic acetylcholine receptor agonist attenuates neuropathological changes associated with intracerebral hemorrhage in mice. Neuroscience 2012; 222:10-9. [DOI: 10.1016/j.neuroscience.2012.07.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 06/26/2012] [Accepted: 07/11/2012] [Indexed: 10/28/2022]
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38
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Reymond JL, Awale M. Exploring chemical space for drug discovery using the chemical universe database. ACS Chem Neurosci 2012; 3:649-57. [PMID: 23019491 DOI: 10.1021/cn3000422] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 04/25/2012] [Indexed: 01/20/2023] Open
Abstract
Herein we review our recent efforts in searching for bioactive ligands by enumeration and virtual screening of the unknown chemical space of small molecules. Enumeration from first principles shows that almost all small molecules (>99.9%) have never been synthesized and are still available to be prepared and tested. We discuss open access sources of molecules, the classification and representation of chemical space using molecular quantum numbers (MQN), its exhaustive enumeration in form of the chemical universe generated databases (GDB), and examples of using these databases for prospective drug discovery. MQN-searchable GDB, PubChem, and DrugBank are freely accessible at www.gdb.unibe.ch.
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Affiliation(s)
- Jean-Louis Reymond
- Department of Chemistry and Biochemistry, University of Berne, Freiestrasse 3, 3012 Berne, Switzerland
| | - Mahendra Awale
- Department of Chemistry and Biochemistry, University of Berne, Freiestrasse 3, 3012 Berne, Switzerland
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39
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Transition metals in organic synthesis. Part 101: Convergent total synthesis of 1,6-dioxygenated carbazole alkaloids. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.05.105] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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Bréthous L, Garcia-Delgado N, Schwartz J, Bertrand S, Bertrand D, Reymond JL. 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). J Med Chem 2012; 55:4605-18. [DOI: 10.1021/jm300030r] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lise Bréthous
- Department of Chemistry and Biochemistry, University of Berne, Freiestrasse 3, 3012 Berne, Switzerland
| | - Noemi Garcia-Delgado
- Department of Chemistry and Biochemistry, University of Berne, Freiestrasse 3, 3012 Berne, Switzerland
| | - Julian Schwartz
- Department of Chemistry and Biochemistry, University of Berne, Freiestrasse 3, 3012 Berne, Switzerland
| | - Sonia Bertrand
- HiQScreen, 15 rue de l'Athénée, 1206 Geneva, Switzerland
| | | | - Jean-Louis Reymond
- Department of Chemistry and Biochemistry, University of Berne, Freiestrasse 3, 3012 Berne, Switzerland
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41
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Philip NS, Carpenter LL, Tyrka AR, Price LH. The nicotinic acetylcholine receptor as a target for antidepressant drug development. ScientificWorldJournal 2012; 2012:104105. [PMID: 22619570 PMCID: PMC3349306 DOI: 10.1100/2012/104105] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 02/28/2012] [Indexed: 11/17/2022] Open
Abstract
An important new area of antidepressant drug development involves targeting the nicotinic acetylcholine receptor (nAChR). This receptor, which is distributed widely in regions of the brain associated with depression, is also implicated in other important processes that are relevant to depression, such as stress and inflammation. The two classes of drugs that target nAChRs can be broadly divided into mecamylamine- and cytisine-based compounds. These drugs probably exert their effects via antagonism at α4β2 nAChRs, and strong preclinical data support the antidepressant efficacy of both classes when used in conjunction with other primary antidepressants (e.g., monoamine reuptake inhibitors). Although clinical data remain limited, preliminary results in this area constitute a compelling argument for further evaluation of the nAChR as a target for future antidepressant drug development.
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Affiliation(s)
- Noah S Philip
- Mood Disorders Research Program, Butler Hospital and Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, RI 02906, USA. Philip, noah
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42
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Wainwright P, Perni R, Vickers C, Coffey SB, Buzon L, DiRico K, Nelson KL, Zhao Z, Limberakis C, Freeman-Cook KD, Corbett JW. Synthesis of Unprotected Carboxy Indazoles via Pd-Catalyzed Carbonylation. SYNTHETIC COMMUN 2012. [DOI: 10.1080/00397911.2010.547970] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Philip Wainwright
- a Peakdale Molecular Ltd., Chapel-en-le-Frith , High Peak , United Kingdom
| | - Remedios Perni
- a Peakdale Molecular Ltd., Chapel-en-le-Frith , High Peak , United Kingdom
| | - Clare Vickers
- a Peakdale Molecular Ltd., Chapel-en-le-Frith , High Peak , United Kingdom
| | - Steven B. Coffey
- b Pfizer Worldwide Research and Development , Groton , Connecticut , USA
| | - Leanne Buzon
- b Pfizer Worldwide Research and Development , Groton , Connecticut , USA
| | - Kenneth DiRico
- b Pfizer Worldwide Research and Development , Groton , Connecticut , USA
| | - Kendra L. Nelson
- b Pfizer Worldwide Research and Development , Groton , Connecticut , USA
| | - Zhengrong Zhao
- b Pfizer Worldwide Research and Development , Groton , Connecticut , USA
| | - Chris Limberakis
- b Pfizer Worldwide Research and Development , Groton , Connecticut , USA
| | | | - Jeffrey W. Corbett
- b Pfizer Worldwide Research and Development , Groton , Connecticut , USA
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43
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Noole A, Pehk T, Järving I, Lopp M, Kanger T. Organocatalytic asymmetric synthesis of trisubstituted pyrrolidines via a cascade reaction. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.01.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Gadakh AV, Chikanna D, Rindhe SS, Karale BK. Heteroaryl Hydroxycarbonylation: An Efficient, Robust, Practically Scalable Approach Using Formyl Acetate as the CO Source. SYNTHETIC COMMUN 2011. [DOI: 10.1080/00397911.2010.528851] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Amol V. Gadakh
- a P. G. Department of Chemistry , New Arts, Science and Commerce College, Ahmednagar, University of Pune , Pune , India
| | - Dinesh Chikanna
- b Aurigene Discovery Technologies Ltd. , Bangalore , Karnataka , India
| | - Sahebrao S. Rindhe
- a P. G. Department of Chemistry , New Arts, Science and Commerce College, Ahmednagar, University of Pune , Pune , India
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45
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Nemecz Á, Taylor P. Creating an α7 nicotinic acetylcholine recognition domain from the acetylcholine-binding protein: crystallographic and ligand selectivity analyses. J Biol Chem 2011; 286:42555-42565. [PMID: 22009746 DOI: 10.1074/jbc.m111.286583] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Determining the structure of the ligand-binding domain of the nicotinic acetylcholine receptor (nAChR) has been a long standing goal in the design of selective drugs useful in implicated diseases for this prevalent receptor family. Acetylcholine-binding proteins have proven to be valuable surrogates with structural similarity and sequence identity to the extracellular domain of the nicotinic receptor, yet these soluble proteins have their unique features and do not serve as exact replicates of the nAChRs of interest. Here we systematically modify the sequence of these proteins toward the homomeric human α7 nAChR. These chimeric proteins exhibit a shift in affinities to reflect α7 binding characteristics yet maintain expression levels and stability conducive for crystallization. We also present a pentameric humanoid nAChR extracellular domain with the structural determination of the α7 nAChR glycosylation site.
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Affiliation(s)
- Ákos Nemecz
- Departments of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0650; Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093-0650
| | - Palmer Taylor
- Department of Pharmacology, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093-0650.
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46
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Duris K, Manaenko A, Suzuki H, Rolland WB, Krafft PR, Zhang JH. α7 nicotinic acetylcholine receptor agonist PNU-282987 attenuates early brain injury in a perforation model of subarachnoid hemorrhage in rats. Stroke 2011; 42:3530-6. [PMID: 21960575 DOI: 10.1161/strokeaha.111.619965] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND AND PURPOSE Early brain injury is an important pathological process after subarachnoid hemorrhage (SAH). The goal of this study was to evaluate whether the α7 nicotinic acetylcholine receptor (α7nAChR) agonist PNU-282987 attenuates early brain injury after SAH and whether α7nAChR stimulation is associated with down-regulation of caspase activity via phosphatidylinositol 3-kinase-Akt signaling. METHODS The perforation model of SAH was performed, and neurological score, body weight loss, and brain water content were evaluated 24 and 72 hours after surgery. Western blot and immunohistochemistry were used for quantification and localization of phosphorylated Akt and cleaved caspase 3. Neuronal cell death was quantified with TUNEL staining. α7nAChR antagonist methylcaconitine and phosphatidylinositol 3-kinase inhibitor wortmannin were used to manipulate the proposed pathway, and results were quantified with Western blot. RESULTS PNU-282987 improved neurological deficits both 24 and 72 hours after surgery and reduced brain water content in left hemispheres 24 hours after surgery. PNU-282987 significantly increased phosphorylated Akt levels and significantly decreased cleaved caspase 3 levels in ipsilateral hemispheres after SAH. Methylcaconitine and wortmannin reversed effects of treatment. Phosphorylated Akt and cleaved caspase 3 were colocalized to neurons in the ipsilateral basal cortex. Phosphorylated Akt was mainly localized in TUNEL-negative cells. PNU-282987 significantly reduced neuronal cell death in the ipsilateral basal cortex. CONCLUSIONS α7nAChR stimulation decreased neuronal cell death and brain edema and improved neurological status in a rat perforation model of SAH. α7nAChR stimulation is associated with increasing phosphorylation of Akt and decreasing cleaved caspase 3 levels in neurons.
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Affiliation(s)
- Kamil Duris
- Department of Physiology, Loma Linda University, Loma Linda, CA 92354, USA
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47
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Mazurov AA, Speake JD, Yohannes D. Discovery and development of α7 nicotinic acetylcholine receptor modulators. J Med Chem 2011; 54:7943-61. [PMID: 21919481 DOI: 10.1021/jm2007672] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anatoly A Mazurov
- Targacept, Inc, Winston-Salem, North Carolina 27101-4165, United States.
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48
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Magnus CJ, Lee PH, Atasoy D, Su HH, Looger LL, Sternson SM. Chemical and genetic engineering of selective ion channel-ligand interactions. Science 2011; 333:1292-6. [PMID: 21885782 PMCID: PMC3210548 DOI: 10.1126/science.1206606] [Citation(s) in RCA: 207] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Ionic flux mediates essential physiological and behavioral functions in defined cell populations. Cell type-specific activators of diverse ionic conductances are needed for probing these effects. We combined chemistry and protein engineering to enable the systematic creation of a toolbox of ligand-gated ion channels (LGICs) with orthogonal pharmacologic selectivity and divergent functional properties. The LGICs and their small-molecule effectors were able to activate a range of ionic conductances in genetically specified cell types. LGICs constructed for neuronal perturbation could be used to selectively manipulate neuron activity in mammalian brains in vivo. The diversity of ion channel tools accessible from this approach will be useful for examining the relationship between neuronal activity and animal behavior, as well as for cell biological and physiological applications requiring chemical control of ion conductance.
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MESH Headings
- Animals
- Benzamides/chemistry
- Benzamides/metabolism
- Benzamides/pharmacology
- Brain/cytology
- Brain/physiology
- Bridged Bicyclo Compounds/chemistry
- Bridged Bicyclo Compounds/metabolism
- Bridged Bicyclo Compounds/pharmacology
- Feeding Behavior
- Female
- HEK293 Cells
- Humans
- Ion Channel Gating
- Ligand-Gated Ion Channels/chemistry
- Ligand-Gated Ion Channels/genetics
- Ligand-Gated Ion Channels/metabolism
- Ligands
- Membrane Potentials
- Mice
- Mice, Inbred C57BL
- Mutagenesis
- Neurons/physiology
- Patch-Clamp Techniques
- Protein Binding
- Protein Engineering
- Protein Structure, Tertiary
- Quinuclidines/chemistry
- Quinuclidines/metabolism
- Quinuclidines/pharmacology
- Receptors, Glycine/genetics
- Receptors, Glycine/metabolism
- Receptors, Nicotinic/chemistry
- Receptors, Nicotinic/genetics
- Receptors, Nicotinic/metabolism
- Receptors, Serotonin, 5-HT3/genetics
- Receptors, Serotonin, 5-HT3/metabolism
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/metabolism
- Small Molecule Libraries
- Stereoisomerism
- alpha7 Nicotinic Acetylcholine Receptor
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Affiliation(s)
| | | | | | - Helen H. Su
- Janelia Farm Research Campus, HHMI, 19700 Helix Dr. Ashburn, VA 20147 USA
| | - Loren L. Looger
- Janelia Farm Research Campus, HHMI, 19700 Helix Dr. Ashburn, VA 20147 USA
| | - Scott M. Sternson
- Janelia Farm Research Campus, HHMI, 19700 Helix Dr. Ashburn, VA 20147 USA
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49
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Wallace TL, Porter RHP. Targeting the nicotinic alpha7 acetylcholine receptor to enhance cognition in disease. Biochem Pharmacol 2011; 82:891-903. [PMID: 21741954 DOI: 10.1016/j.bcp.2011.06.034] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 06/18/2011] [Accepted: 06/24/2011] [Indexed: 01/05/2023]
Abstract
A promising drug target currently under investigation to improve cognitive deficits in neuropsychiatric and neurological disorders is the neuronal nicotinic alpha7 acetylcholine receptor (α7nAChR). Improving cognitive impairments in diseases such as Alzheimer's (AD) and schizophrenia remains a large unmet medical need, and the α7nAChR has many properties that make it an attractive therapeutic target. The α7nAChR is a ligand gated ion channel that has particularly high permeability to Ca(2+) and is expressed in key brain regions involved in cognitive processes (e.g., hippocampus). The α7nAChRs are localized both pre-synaptically, where they can regulate neurotransmitter release, and post-synaptically where they can activate intracellular signaling cascades and influence downstream processes involved in learning and memory. In particular, activation of the α7nAChR with small molecule agonists enhances long-term potentiation, an in vitro model of synaptic plasticity, and improves performance across multiple cognitive domains in rodents, monkeys, and humans. Positive allosteric modulation of the α7nAChR offers an alternate approach to direct agonism that could prove to be particularly beneficial in certain disease populations where smoking nicotine is prevalent (e.g., schizophrenia) and could interfere with an orthosteric agonist approach. The current review focuses on the neurobiology of the α7nAChR, its role in cognition and the development status of some of the most promising molecules advancing for the treatment of cognitive dysfunction in disease.
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Affiliation(s)
- Tanya L Wallace
- Center for Neuroscience, SRI International, 333 Ravenswood Avenue, M/S 100-69, Menlo Park, CA 94025, USA.
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50
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Grygorenko OO, Radchenko DS, Volochnyuk DM, Tolmachev AA, Komarov IV. Bicyclic Conformationally Restricted Diamines. Chem Rev 2011; 111:5506-68. [DOI: 10.1021/cr100352k] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Oleksandr O. Grygorenko
- Kyiv National Taras Shevchenko University, Volodymyrska Street, 64, Kyiv 01601, Ukraine
- Enamine Ltd., Alexandra Matrosova Street, 23, Kyiv 01103, Ukraine
| | - Dmytro S. Radchenko
- Kyiv National Taras Shevchenko University, Volodymyrska Street, 64, Kyiv 01601, Ukraine
- Enamine Ltd., Alexandra Matrosova Street, 23, Kyiv 01103, Ukraine
| | | | - Andrey A. Tolmachev
- Kyiv National Taras Shevchenko University, Volodymyrska Street, 64, Kyiv 01601, Ukraine
- Enamine Ltd., Alexandra Matrosova Street, 23, Kyiv 01103, Ukraine
| | - Igor V. Komarov
- Kyiv National Taras Shevchenko University, Volodymyrska Street, 64, Kyiv 01601, Ukraine
- Enamine Ltd., Alexandra Matrosova Street, 23, Kyiv 01103, Ukraine
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