Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane

Autores
Sosa, Liliana del Valle; Gutiérrez, Silvina; Petiti, Juan Pablo; Vaca, Alicia Maldré del Valle; de Paul, Ana Lucia; Torres, Alicia Ines
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In the present work, we investigated the effect of 17β-estradiol (E2) and basic fibroblast growth factor 2 (FGF2) on the lactotroph cell-proliferative response and the related membrane-initiated signaling pathway. Anterior pituitary mixed-cell cultures of random, cycling 3-mo-old female rats were treated with 10 nM E2, E2 membrane-impermeable conjugated BSA (E2-BSA), PPT (ERα agonist), and DPN (ERβ agonist) alone or combined with FGF2 (10 ng/ml) for 30 min or 4 h. Although our results showed that the uptake of BrdU into the nucleus of lactotrophs was not modified by E2 or FGF2 alone, a significant increase in the lactotroph uptake of BrdU was observed after E2/FGF2 coincubation, with this effect being mimicked by PPT/FGF2. These proliferative effects were blocked by ICI 182,780 or PD-98059. The involvement of membrane ER in the proliferative response of prolactin cells induced by the steroid and FGF2 coincubation was confirmed using E2-BSA, and the association between ERα and FGF receptor was observed after E2/FGF2 treatment by immunoprecipitation. A significant increase in the ERK1/2 expression was noted after E2, E2-BSA, PPT, and FGF2 alone, which was more noticeable after E2-BSA/FGF2, E2/FGF2, or PPT/FGF2 treatments. This study provides evidence that E2 and FGF2 exert a cooperative effect on the lactotroph proliferation principally by signaling initiated at the plasma membrane triggering a genomic effect mediated by MEK/ERK1/2, a common signaling pathway, that finally regulates the lactotroph population, thus contributing to pituitary plasticity.
Fil: Sosa, Liliana del Valle. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: Gutiérrez, Silvina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: Petiti, Juan Pablo. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: Vaca, Alicia Maldré del Valle. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: de Paul, Ana Lucia. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: Torres, Alicia Ines. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Materia
17beta-Estradiol
Membrane Re
Fgf2
Lactotroph Cells
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11602
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/11602
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membraneSosa, Liliana del ValleGutiérrez, SilvinaPetiti, Juan PabloVaca, Alicia Maldré del Vallede Paul, Ana LuciaTorres, Alicia Ines17beta-EstradiolMembrane ReFgf2Lactotroph Cellshttps://purl.org/becyt/ford/3.3https://purl.org/becyt/ford/3In the present work, we investigated the effect of 17β-estradiol (E2) and basic fibroblast growth factor 2 (FGF2) on the lactotroph cell-proliferative response and the related membrane-initiated signaling pathway. Anterior pituitary mixed-cell cultures of random, cycling 3-mo-old female rats were treated with 10 nM E2, E2 membrane-impermeable conjugated BSA (E2-BSA), PPT (ERα agonist), and DPN (ERβ agonist) alone or combined with FGF2 (10 ng/ml) for 30 min or 4 h. Although our results showed that the uptake of BrdU into the nucleus of lactotrophs was not modified by E2 or FGF2 alone, a significant increase in the lactotroph uptake of BrdU was observed after E2/FGF2 coincubation, with this effect being mimicked by PPT/FGF2. These proliferative effects were blocked by ICI 182,780 or PD-98059. The involvement of membrane ER in the proliferative response of prolactin cells induced by the steroid and FGF2 coincubation was confirmed using E2-BSA, and the association between ERα and FGF receptor was observed after E2/FGF2 treatment by immunoprecipitation. A significant increase in the ERK1/2 expression was noted after E2, E2-BSA, PPT, and FGF2 alone, which was more noticeable after E2-BSA/FGF2, E2/FGF2, or PPT/FGF2 treatments. This study provides evidence that E2 and FGF2 exert a cooperative effect on the lactotroph proliferation principally by signaling initiated at the plasma membrane triggering a genomic effect mediated by MEK/ERK1/2, a common signaling pathway, that finally regulates the lactotroph population, thus contributing to pituitary plasticity.Fil: Sosa, Liliana del Valle. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; ArgentinaFil: Gutiérrez, Silvina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; ArgentinaFil: Petiti, Juan Pablo. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; ArgentinaFil: Vaca, Alicia Maldré del Valle. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; ArgentinaFil: de Paul, Ana Lucia. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; ArgentinaFil: Torres, Alicia Ines. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; ArgentinaAmerican Physiological Society2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11602Sosa, Liliana del Valle; Gutiérrez, Silvina; Petiti, Juan Pablo; Vaca, Alicia Maldré del Valle; de Paul, Ana Lucia; et al.; Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane; American Physiological Society; American Journal Of Physiology-endocrinology And Metabolism; 305; 1; 4-2013; 45-490193-18491522-1555enginfo:eu-repo/semantics/altIdentifier/doi/10.1152/ajpendo.00027.2013info:eu-repo/semantics/altIdentifier/url/http://ajpendo.physiology.org/content/305/1/E41info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:02:37Zoai:ri.conicet.gov.ar:11336/11602instacron: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:34982025-10-22 11:02:37.304CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane
title Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane
spellingShingle Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane
Sosa, Liliana del Valle
17beta-Estradiol
Membrane Re
Fgf2
Lactotroph Cells
title_short Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane
title_full Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane
title_fullStr Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane
title_full_unstemmed Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane
title_sort Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane
dc.creator.none.fl_str_mv Sosa, Liliana del Valle
Gutiérrez, Silvina
Petiti, Juan Pablo
Vaca, Alicia Maldré del Valle
de Paul, Ana Lucia
Torres, Alicia Ines
author Sosa, Liliana del Valle
author_facet Sosa, Liliana del Valle
Gutiérrez, Silvina
Petiti, Juan Pablo
Vaca, Alicia Maldré del Valle
de Paul, Ana Lucia
Torres, Alicia Ines
author_role author
author2 Gutiérrez, Silvina
Petiti, Juan Pablo
Vaca, Alicia Maldré del Valle
de Paul, Ana Lucia
Torres, Alicia Ines
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv 17beta-Estradiol
Membrane Re
Fgf2
Lactotroph Cells
topic 17beta-Estradiol
Membrane Re
Fgf2
Lactotroph Cells
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.3
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv In the present work, we investigated the effect of 17β-estradiol (E2) and basic fibroblast growth factor 2 (FGF2) on the lactotroph cell-proliferative response and the related membrane-initiated signaling pathway. Anterior pituitary mixed-cell cultures of random, cycling 3-mo-old female rats were treated with 10 nM E2, E2 membrane-impermeable conjugated BSA (E2-BSA), PPT (ERα agonist), and DPN (ERβ agonist) alone or combined with FGF2 (10 ng/ml) for 30 min or 4 h. Although our results showed that the uptake of BrdU into the nucleus of lactotrophs was not modified by E2 or FGF2 alone, a significant increase in the lactotroph uptake of BrdU was observed after E2/FGF2 coincubation, with this effect being mimicked by PPT/FGF2. These proliferative effects were blocked by ICI 182,780 or PD-98059. The involvement of membrane ER in the proliferative response of prolactin cells induced by the steroid and FGF2 coincubation was confirmed using E2-BSA, and the association between ERα and FGF receptor was observed after E2/FGF2 treatment by immunoprecipitation. A significant increase in the ERK1/2 expression was noted after E2, E2-BSA, PPT, and FGF2 alone, which was more noticeable after E2-BSA/FGF2, E2/FGF2, or PPT/FGF2 treatments. This study provides evidence that E2 and FGF2 exert a cooperative effect on the lactotroph proliferation principally by signaling initiated at the plasma membrane triggering a genomic effect mediated by MEK/ERK1/2, a common signaling pathway, that finally regulates the lactotroph population, thus contributing to pituitary plasticity.
Fil: Sosa, Liliana del Valle. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: Gutiérrez, Silvina. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: Petiti, Juan Pablo. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: Vaca, Alicia Maldré del Valle. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: de Paul, Ana Lucia. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
Fil: Torres, Alicia Ines. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Investigaciones en Ciencias de la Salud; Argentina. Universidad Nacional de Cordoba. Facultad de Medicina. Centro de Microscopia Electronica; Argentina
description In the present work, we investigated the effect of 17β-estradiol (E2) and basic fibroblast growth factor 2 (FGF2) on the lactotroph cell-proliferative response and the related membrane-initiated signaling pathway. Anterior pituitary mixed-cell cultures of random, cycling 3-mo-old female rats were treated with 10 nM E2, E2 membrane-impermeable conjugated BSA (E2-BSA), PPT (ERα agonist), and DPN (ERβ agonist) alone or combined with FGF2 (10 ng/ml) for 30 min or 4 h. Although our results showed that the uptake of BrdU into the nucleus of lactotrophs was not modified by E2 or FGF2 alone, a significant increase in the lactotroph uptake of BrdU was observed after E2/FGF2 coincubation, with this effect being mimicked by PPT/FGF2. These proliferative effects were blocked by ICI 182,780 or PD-98059. The involvement of membrane ER in the proliferative response of prolactin cells induced by the steroid and FGF2 coincubation was confirmed using E2-BSA, and the association between ERα and FGF receptor was observed after E2/FGF2 treatment by immunoprecipitation. A significant increase in the ERK1/2 expression was noted after E2, E2-BSA, PPT, and FGF2 alone, which was more noticeable after E2-BSA/FGF2, E2/FGF2, or PPT/FGF2 treatments. This study provides evidence that E2 and FGF2 exert a cooperative effect on the lactotroph proliferation principally by signaling initiated at the plasma membrane triggering a genomic effect mediated by MEK/ERK1/2, a common signaling pathway, that finally regulates the lactotroph population, thus contributing to pituitary plasticity.
publishDate 2013
dc.date.none.fl_str_mv 2013-04
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/11336/11602
Sosa, Liliana del Valle; Gutiérrez, Silvina; Petiti, Juan Pablo; Vaca, Alicia Maldré del Valle; de Paul, Ana Lucia; et al.; Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane; American Physiological Society; American Journal Of Physiology-endocrinology And Metabolism; 305; 1; 4-2013; 45-49
0193-1849
1522-1555
url http://hdl.handle.net/11336/11602
identifier_str_mv Sosa, Liliana del Valle; Gutiérrez, Silvina; Petiti, Juan Pablo; Vaca, Alicia Maldré del Valle; de Paul, Ana Lucia; et al.; Cooperative effect of E2 and FGF2 on lactotroph proliferation triggered by signaling initiated at the plasma membrane; American Physiological Society; American Journal Of Physiology-endocrinology And Metabolism; 305; 1; 4-2013; 45-49
0193-1849
1522-1555
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1152/ajpendo.00027.2013
info:eu-repo/semantics/altIdentifier/url/http://ajpendo.physiology.org/content/305/1/E41
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physiological Society
publisher.none.fl_str_mv American Physiological 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
repository.name.fl_str_mv 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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