Signalling, cell cycle and pluripotency in embryonic stem cells

• Autores: Tom Burdon, Austin G Smith, Pierre Savatier
• Localización: Trends in cell biology, ISSN 0962-8924, Vol. 12, Nº 9, 2002, págs. 432-438
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Pluripotent mouse embryonic stem (ES) cells can be expanded in large numbers in vitro owing to a process of symmetrical self-renewal. Self-renewal entails proliferation with a concomitant suppression of differentiation. Here we describe how the cytokine leukaemia inhibitory factor (LIF) sustains self-renewal through activation of the transcription factor STAT3, and how two other signals – extracellular-signal-related kinase (ERK) and phosphatidylinositol-3-OH kinase (PI3K) – can influence differentiation and propagation, respectively. We relate these observations to the unusual cell-cycle properties of ES cells and speculate on the role of the cell cycle in maintaining pluripotency.