999 resultados para K-Ras
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Conté: ¿Irán, potencia nuclear?; El reto nuclear de Irán; Dos respuestas al reto nuclear; Con la vista puesta en Irán; La provocación nuclear norcoreana; Irán y la oferta de Obama
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Titre uniforme : [Fantaisies. Piano. KV 475. Do mineur]
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While the pro-differentiation and tumour suppressive functions of Notch signalling in keratinocytes are well established, the underlying mechanisms remain poorly understood. We report here that interferon regulatory factor 6 (IRF6), an IRF family member with an essential role in epidermal development, is induced in differentiation through a Notch-dependent mechanism and is a primary Notch target in keratinocytes and keratinocyte-derived SCC cells. Increased IRF6 expression contributes to the impact of Notch activation on growth/differentiation-related genes, while it is not required for induction of 'canonical' Notch targets like p21(WAF1/Cip1), Hes1 and Hey1. Down-modulation of IRF6 counteracts differentiation of primary human keratinocytes in vitro and in vivo, promoting ras-induced tumour formation. The clinical relevance of these findings is illustrated by the strikingly opposite pattern of expression of Notch1 and IRF6 versus epidermal growth factor receptor in a cohort of clinical SCCs, as a function of their grade of differentiation. Thus, IRF6 is a primary Notch target in keratinocytes, which contributes to the role of this pathway in differentiation and tumour suppression.
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Échelle(s) : [1:1 337 000 environ], Lieues de France, de 25 au degré, 30 [= 9,8 cm]
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[Traditions. Asie. Inde. Présidence de Madras [i.e. Chennai]. Ceded Districts]
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[Traditions. Asie. Inde. Présidence de Madras [i.e. Chennai]. Etat du Kerala. Région du Malabar]
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[Traditions. Asie. Inde. Province de Madras [i.e. Chennai]. État du Kérala. Kochi]
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[Traditions. Asie. Inde. Province de Madras [i.e. Chennai]. État de Karnataka. Région du Kanara]
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[Traditions. Asie. Inde. Etat du Maharashtra. Amravati]
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[Traditions. Asie. Inde. Province du Berar. Yavatmal]