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dc.creatorPérez Pérez, Antonioes
dc.creatorSánchez Jiménez, Floraes
dc.creatorVilariño-García, Teresaes
dc.creatorCruz Merino, Luis de laes
dc.creatorVirizuela, Juan A.es
dc.creatorSánchez Margalet, Víctores
dc.date.accessioned2024-03-13T15:32:26Z
dc.date.available2024-03-13T15:32:26Z
dc.date.issued2016
dc.identifier.citationPérez Pérez, A., Sánchez Jiménez, F., Vilariño-García, T., Cruz Merino, L.d.l., Virizuela, J.A. y Sánchez Margalet, V. (2016). Sam68 Mediates the Activation of Insulin and Leptin Signalling in Breast Cancer Cells. Plos one, 11 (7), e0158218. https://doi.org/10.1371/journal.pone.0158218.
dc.identifier.issn1932-6203es
dc.identifier.urihttps://hdl.handle.net/11441/156234
dc.description.abstractObesity is a well-known risk factor for breast cancer development in postmenopausal women. High insulin and leptin levels seem to have a role modulating the growth of these tumours. Sam68 is an RNA-binding protein with signalling functions that has been found to be overexpressed in breast cancer. Moreover, Sam68 may be recruited to insulin and lep tin signalling pathways, mediating its effects on survival, growth and proliferation in differ ent cellular types. We aimed to study the expression of Sam68 and its phosphorylation level upon insulin and leptin stimulation, and the role of Sam68 in the proliferative effect and signalling pathways that are activated by insulin or leptin in human breast adenocarci noma cells. In the human breast adenocarcinoma cell lines MCF7, MDA-MB-231 and BT 474, Sam68 protein quantity and gene expression were increased upon leptin or insulin stimulation, as it was checked by qPCR and immunoblot. Moreover, both insulin and leptin stimulation promoted an increase in Sam68 tyrosine phosphorylation and negatively regu lated its RNA binding capacity. siRNA was used to downregulate Sam68 expression, which resulted in lower proliferative effects of both insulin and leptin, as well as a lower acti vation of MAPK and PI3K pathways promoted by both hormones. These effects may be partly explained by the decrease in IRS-1 expression by down-regulation of Sam68. These results suggest the participation of Sam68 in both leptin and insulin receptor signaling in human breast cancer cells, mediating the trophic effects of these hormones in proliferation and cellular growth.es
dc.formatapplication/pdfes
dc.format.extent15 p.es
dc.language.isoenges
dc.publisherPublic Library Sciencees
dc.relation.ispartofPlos one, 11 (7), e0158218.
dc.rightsAtribución 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectCancer Cellses
dc.subjectLeptines
dc.subjectBreast canceres
dc.subjectObesityes
dc.titleSam68 Mediates the Activation of Insulin and Leptin Signalling in Breast Cancer Cellses
dc.typeinfo:eu-repo/semantics/articlees
dc.type.versioninfo:eu-repo/semantics/publishedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Bioquímica Médica y Biología Molecular e Inmunologíaes
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Medicinaes
dc.relation.publisherversionhttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0158218es
dc.identifier.doi10.1371/journal.pone.0158218es
dc.contributor.groupUniversidad de Sevilla. CTS151: Bioquímica médica.es
dc.journaltitlePlos onees
dc.publication.volumen11es
dc.publication.issue7es
dc.publication.initialPagee0158218es

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