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dc.contributor.authorEnseñat-Waser, Roberto-
dc.contributor.authorSantana, Alfredo-
dc.contributor.authorVicente-Salar, Néstor-
dc.contributor.authorCigudosa, Juan Cruz-
dc.contributor.authorRoche, Enrique-
dc.contributor.authorSoria, Bernat-
dc.contributor.authorReig, Juan-
dc.contributor.otherDepartamentos de la UMH::Biología Aplicadaes_ES
dc.date.accessioned2024-02-01T07:28:20Z-
dc.date.available2024-02-01T07:28:20Z-
dc.date.created2006-05-
dc.identifier.citationIn Vitro Cellular & Developmental Biology - Animal, Volume 42, pages 115–123, (2006)es_ES
dc.identifier.issn1543-706X-
dc.identifier.issn1071-2690-
dc.identifier.urihttps://hdl.handle.net/11000/30904-
dc.description.abstractThe differentiation of mouse embryonic stem (ES) cells can be induced in vitro after leukemia inhibitory factor (LIF) withdrawal and further enhanced by the formation of “embryoid body” (EB) aggregates. This strategy is being used in order to optimize differentiation protocols that would result in functional cells for experimental cell replacement therapies. However, this study presents the possibility for residual undifferentiated cells to survive after standard in vitro procedures. Mouse ES cells were stably transfected with the enhanced green fluorescent protein (EGFP), under the control of the Oct4 promoter, a transcription factor that is expressed in undifferentiated ES cells but down-regulated on differentiation. Residual fluorescent cells were isolated from EBs that were cultured in standard conditions in absence of LIF. These residual cells displayed recurrent gain of chromosomes 8 and 9. Residual fluorescent cells, further expanded in absence of LIF and cultured as EBs, still displayed a significant Oct4 expression in comparison with parental transfected ES cells. Consequently, these residual cells have an intrinsic resistance to differentiate. The behavior of these cells, observed in vitro, can be overcome in vivo, as they were able to induce teratomas in subcutaneously injected nude mice. Residual undifferentiated cells displayed slight levels of VASA and DAZL expression. These results demonstrate that mouse ES cells cultured in vitro, in standard conditions, can spontaneously acquire recurrent karyotypical changes that may promote an undifferentiated stage, being selected in standard culture conditions in vitro.es_ES
dc.formatapplication/pdfes_ES
dc.format.extent9es_ES
dc.language.isoenges_ES
dc.publisherSociety for In-Vitro Biologyes_ES
dc.rightsinfo:eu-repo/semantics/closedAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectcell differentiationes_ES
dc.subjectcell culturees_ES
dc.subjecttumorigenicityes_ES
dc.subjectflow cytometryes_ES
dc.subjectOct4es_ES
dc.subjectkaryotypees_ES
dc.subject.classificationNutrición y bromatologíaes_ES
dc.subject.otherCDU::5 - Ciencias puras y naturales::57 - Biologíaes_ES
dc.titleIsolation and characterization of residual undifferentiated mouse embryonic stem cells from embryoid body cultures by fluorescence trackinges_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
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