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Title

Gene profiling approaches help to define the specific functions of retinoblastoma family in epidermis

AuthorsLara, M. Fernanda; Ruiz Macías, Sergio; Segrelles, Carmen
Issue Date2008
PublisherWiley-Blackwell
CitationMolecular Carcinogenesis 47(3): 209-221 (2008)
AbstractThe epidermal-specific ablation of Rb gene leads to increased proliferation, aberrant differentiation, and the disengagement of these processes in vivo and in vitro. These differences in phenotype are more severe with the loss of p107, demonstrating the functional compensation between pRb and p107. As p107 and p130 also exert overlapping functions in epidermis, we have generated RbF19/F19K14cre;Rb/2-/- (pRb-;p130-) mice to analyze possible functional redundancies between pRb and p130. The epidermal phenotype was very similar between pRb- and pRb-;p130- mice, suggesting that pRb and p130 activities are not redundant in epidermis. Importantly, we can correlate the proliferation differences with specific changes in gene expression between pRb-, pRb-;p107- and pRb-;p130- primary keratinocytes using microarray analysis, and explain the phenotypes in the context of altered E2F expression and functionality. Our findings support a model in which the distinct retinoblastoma family members, in conjunction with E2F members, play a central role in regulating epidermal homeostasis through specific or overlapping activities. © 2007 Wiley-Liss, Inc.
URIhttp://hdl.handle.net/10261/60348
DOI10.1002/mc.20376
Identifiersdoi: 10.1002/mc.20376
issn: 0899-1987
e-issn: 1098-2744
Appears in Collections:(IBMCC) Artículos
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