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http://purl.uniprot.org/citations/15107404http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/15107404http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/15107404http://www.w3.org/2000/01/rdf-schema#comment"Liver tumor cells arise from normal hepatocytes that escape negative control of proliferation. The transcription factor C/EBPalpha maintains quiescence of hepatocytes through two pathways: inhibition of cdks and repression of E2F. Nevertheless, liver tumors and cultured hepatoma cell lines proliferate in the presence of C/EBPalpha. In this paper, we present evidence that the activation of the PI3K/Akt pathway in liver tumor cells blocks the growth inhibitory activity of C/EBPalpha through the PP2A-mediated dephosphorylation of C/EBPalpha on Ser 193, leading to a failure of C/EBPalpha to interact with and inhibit cdks and E2F. Mutation of Ser 193 to Ala also abolishes the ability of C/EBPalpha to cause growth arrest because of a lack of interactions with cdk2 and E2F-Rb complexes. These data provide a molecular basis for the development of liver tumors in which the activation of PI3K/Akt pathway neutralizes C/EBPalpha growth inhibitory activity."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.org/dc/terms/identifier"doi:10.1101/gad.1183304"xsd:string
http://purl.uniprot.org/citations/15107404http://purl.org/dc/terms/identifier"doi:10.1101/gad.1183304"xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Wang G.L."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Wang G.L."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Timchenko N.A."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Timchenko N.A."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Awad S."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Awad S."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Iakova P."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Iakova P."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Wilde M."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/author"Wilde M."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/date"2004"xsd:gYear
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/date"2004"xsd:gYear
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/name"Genes Dev."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/name"Genes Dev."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/pages"912-925"xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/pages"912-925"xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/title"Liver tumors escape negative control of proliferation via PI3K/Akt-mediated block of C/EBP alpha growth inhibitory activity."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/title"Liver tumors escape negative control of proliferation via PI3K/Akt-mediated block of C/EBP alpha growth inhibitory activity."xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/volume"18"xsd:string
http://purl.uniprot.org/citations/15107404http://purl.uniprot.org/core/volume"18"xsd:string