Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors
- Autores
- Arias, Hugo Ruben; de Rosa, Maria Jose; Bergé, Ignacio; Feuerbach, Dominik; Bouzat, Cecilia Beatriz
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The differential action of the novel agonist JN403 at neuronalα7 and muscle nicotinic receptors (AChRs)was explored by using a combination of functional and structural approaches. Single-channel recordings reveal that JN403 is a potent agonist of α7 but a very low-efficacy agonist of muscle AChRs. JN403 elicits detectable openings of α7 and muscle AChRs at concentrations∼1000-fold lower and∼20-fold higher, respectively, than that for ACh. Single-channel activity elicited by JN403 is very similar to that elicited by ACh in α7 but profoundly different in muscle AChRs, where openings are brief and infrequent and do not appear in clusters at any concentration. JN403 elicits single-channel activity of muscle AChRs lacking theεsubunit, with opening events being more frequent and prolonged than those of wild-type AChRs. This finding is in line with the molecular docking studies predicting that JN403 may form a hydrogen bond required for potent activation at the α−δ but not at the α−ε binding site. JN403 does not elicit detectable Ca2+ influx in muscle AChRs but inhibits (±)-epibatidine-elicited influx mainly by a noncompetitive mechanism. Such inhibition is compatible with single-channel recordings revealing that JN403 produces open-channel blockade and early termination of ACh-elicited clusters, and it is therefore also a potent desensitizing enhancer of muscle AChRs. The latter mechanism is supported by the JN403-induced increase in the level of binding of [3H]cytisine and [3H]TCP to resting AChRs. Elucidation of the differences in activity of JN403 between neuronal α7 and muscle AChRs provides further insights into mechanisms underlying selectivity for α7 AChRs.
Fil: Arias, Hugo Ruben. California Northstate University College of Medicine; Estados Unidos
Fil: de Rosa, Maria Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET Bahía Blanca. Instituto de Investigaciones Bioquímicas Bahía Blanca (i); Argentina
Fil: Bergé, Ignacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnol.conicet - Bahia Blanca. Instituto de Invest.bioquimicas Bahia Blanca (i); Argentina
Fil: Feuerbach, Dominik. Novartis Institutes for Biomedical Research; Suiza
Fil: Bouzat, Cecilia Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnol.conicet - Bahia Blanca. Instituto de Invest.bioquimicas Bahia Blanca (i); Argentina - Materia
-
Receptor Nicotinico
Agonista
Patch Clamp
Receptor Cys-Loop - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/4538
Ver los metadatos del registro completo
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Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine ReceptorsArias, Hugo Rubende Rosa, Maria JoseBergé, IgnacioFeuerbach, DominikBouzat, Cecilia BeatrizReceptor NicotinicoAgonistaPatch ClampReceptor Cys-Loophttps://purl.org/becyt/ford/3.1https://purl.org/becyt/ford/3The differential action of the novel agonist JN403 at neuronalα7 and muscle nicotinic receptors (AChRs)was explored by using a combination of functional and structural approaches. Single-channel recordings reveal that JN403 is a potent agonist of α7 but a very low-efficacy agonist of muscle AChRs. JN403 elicits detectable openings of α7 and muscle AChRs at concentrations∼1000-fold lower and∼20-fold higher, respectively, than that for ACh. Single-channel activity elicited by JN403 is very similar to that elicited by ACh in α7 but profoundly different in muscle AChRs, where openings are brief and infrequent and do not appear in clusters at any concentration. JN403 elicits single-channel activity of muscle AChRs lacking theεsubunit, with opening events being more frequent and prolonged than those of wild-type AChRs. This finding is in line with the molecular docking studies predicting that JN403 may form a hydrogen bond required for potent activation at the α−δ but not at the α−ε binding site. JN403 does not elicit detectable Ca2+ influx in muscle AChRs but inhibits (±)-epibatidine-elicited influx mainly by a noncompetitive mechanism. Such inhibition is compatible with single-channel recordings revealing that JN403 produces open-channel blockade and early termination of ACh-elicited clusters, and it is therefore also a potent desensitizing enhancer of muscle AChRs. The latter mechanism is supported by the JN403-induced increase in the level of binding of [3H]cytisine and [3H]TCP to resting AChRs. Elucidation of the differences in activity of JN403 between neuronal α7 and muscle AChRs provides further insights into mechanisms underlying selectivity for α7 AChRs.Fil: Arias, Hugo Ruben. California Northstate University College of Medicine; Estados UnidosFil: de Rosa, Maria Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET Bahía Blanca. Instituto de Investigaciones Bioquímicas Bahía Blanca (i); ArgentinaFil: Bergé, Ignacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnol.conicet - Bahia Blanca. Instituto de Invest.bioquimicas Bahia Blanca (i); ArgentinaFil: Feuerbach, Dominik. Novartis Institutes for Biomedical Research; SuizaFil: Bouzat, Cecilia Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnol.conicet - Bahia Blanca. Instituto de Invest.bioquimicas Bahia Blanca (i); ArgentinaAmerican Chemical Society2013-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4538Arias, Hugo Ruben; de Rosa, Maria Jose; Bergé, Ignacio; Feuerbach, Dominik; Bouzat, Cecilia Beatriz; Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors; American Chemical Society; Biochemistry; 52; 10-2013; 8480-84880006-2960enginfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/http://www.ncbi.nlm.nih.gov/pubmed/24164482info:eu-repo/semantics/altIdentifier/doi/10.1021/bi4012572info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:51:02Zoai:ri.conicet.gov.ar:11336/4538instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:51:02.88CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors |
title |
Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors |
spellingShingle |
Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors Arias, Hugo Ruben Receptor Nicotinico Agonista Patch Clamp Receptor Cys-Loop |
title_short |
Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors |
title_full |
Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors |
title_fullStr |
Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors |
title_full_unstemmed |
Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors |
title_sort |
Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors |
dc.creator.none.fl_str_mv |
Arias, Hugo Ruben de Rosa, Maria Jose Bergé, Ignacio Feuerbach, Dominik Bouzat, Cecilia Beatriz |
author |
Arias, Hugo Ruben |
author_facet |
Arias, Hugo Ruben de Rosa, Maria Jose Bergé, Ignacio Feuerbach, Dominik Bouzat, Cecilia Beatriz |
author_role |
author |
author2 |
de Rosa, Maria Jose Bergé, Ignacio Feuerbach, Dominik Bouzat, Cecilia Beatriz |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Receptor Nicotinico Agonista Patch Clamp Receptor Cys-Loop |
topic |
Receptor Nicotinico Agonista Patch Clamp Receptor Cys-Loop |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
dc.description.none.fl_txt_mv |
The differential action of the novel agonist JN403 at neuronalα7 and muscle nicotinic receptors (AChRs)was explored by using a combination of functional and structural approaches. Single-channel recordings reveal that JN403 is a potent agonist of α7 but a very low-efficacy agonist of muscle AChRs. JN403 elicits detectable openings of α7 and muscle AChRs at concentrations∼1000-fold lower and∼20-fold higher, respectively, than that for ACh. Single-channel activity elicited by JN403 is very similar to that elicited by ACh in α7 but profoundly different in muscle AChRs, where openings are brief and infrequent and do not appear in clusters at any concentration. JN403 elicits single-channel activity of muscle AChRs lacking theεsubunit, with opening events being more frequent and prolonged than those of wild-type AChRs. This finding is in line with the molecular docking studies predicting that JN403 may form a hydrogen bond required for potent activation at the α−δ but not at the α−ε binding site. JN403 does not elicit detectable Ca2+ influx in muscle AChRs but inhibits (±)-epibatidine-elicited influx mainly by a noncompetitive mechanism. Such inhibition is compatible with single-channel recordings revealing that JN403 produces open-channel blockade and early termination of ACh-elicited clusters, and it is therefore also a potent desensitizing enhancer of muscle AChRs. The latter mechanism is supported by the JN403-induced increase in the level of binding of [3H]cytisine and [3H]TCP to resting AChRs. Elucidation of the differences in activity of JN403 between neuronal α7 and muscle AChRs provides further insights into mechanisms underlying selectivity for α7 AChRs. Fil: Arias, Hugo Ruben. California Northstate University College of Medicine; Estados Unidos Fil: de Rosa, Maria Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico CONICET Bahía Blanca. Instituto de Investigaciones Bioquímicas Bahía Blanca (i); Argentina Fil: Bergé, Ignacio. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnol.conicet - Bahia Blanca. Instituto de Invest.bioquimicas Bahia Blanca (i); Argentina Fil: Feuerbach, Dominik. Novartis Institutes for Biomedical Research; Suiza Fil: Bouzat, Cecilia Beatriz. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnol.conicet - Bahia Blanca. Instituto de Invest.bioquimicas Bahia Blanca (i); Argentina |
description |
The differential action of the novel agonist JN403 at neuronalα7 and muscle nicotinic receptors (AChRs)was explored by using a combination of functional and structural approaches. Single-channel recordings reveal that JN403 is a potent agonist of α7 but a very low-efficacy agonist of muscle AChRs. JN403 elicits detectable openings of α7 and muscle AChRs at concentrations∼1000-fold lower and∼20-fold higher, respectively, than that for ACh. Single-channel activity elicited by JN403 is very similar to that elicited by ACh in α7 but profoundly different in muscle AChRs, where openings are brief and infrequent and do not appear in clusters at any concentration. JN403 elicits single-channel activity of muscle AChRs lacking theεsubunit, with opening events being more frequent and prolonged than those of wild-type AChRs. This finding is in line with the molecular docking studies predicting that JN403 may form a hydrogen bond required for potent activation at the α−δ but not at the α−ε binding site. JN403 does not elicit detectable Ca2+ influx in muscle AChRs but inhibits (±)-epibatidine-elicited influx mainly by a noncompetitive mechanism. Such inhibition is compatible with single-channel recordings revealing that JN403 produces open-channel blockade and early termination of ACh-elicited clusters, and it is therefore also a potent desensitizing enhancer of muscle AChRs. The latter mechanism is supported by the JN403-induced increase in the level of binding of [3H]cytisine and [3H]TCP to resting AChRs. Elucidation of the differences in activity of JN403 between neuronal α7 and muscle AChRs provides further insights into mechanisms underlying selectivity for α7 AChRs. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-10 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/4538 Arias, Hugo Ruben; de Rosa, Maria Jose; Bergé, Ignacio; Feuerbach, Dominik; Bouzat, Cecilia Beatriz; Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors; American Chemical Society; Biochemistry; 52; 10-2013; 8480-8488 0006-2960 |
url |
http://hdl.handle.net/11336/4538 |
identifier_str_mv |
Arias, Hugo Ruben; de Rosa, Maria Jose; Bergé, Ignacio; Feuerbach, Dominik; Bouzat, Cecilia Beatriz; Differential Pharmacological Activity of JN403 between á7 and Muscle Nicotinic Acetylcholine Receptors; American Chemical Society; Biochemistry; 52; 10-2013; 8480-8488 0006-2960 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/url/http://www.ncbi.nlm.nih.gov/pubmed/24164482 info:eu-repo/semantics/altIdentifier/doi/10.1021/bi4012572 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Chemical Society |
publisher.none.fl_str_mv |
American Chemical Society |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.13397 |