کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2131046 1086618 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Long isoform of ErbB3 binding protein, p48, mediates protein kinase B/Akt-dependent HDM2 stabilization and nuclear localization
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی تحقیقات سرطان
پیش نمایش صفحه اول مقاله
Long isoform of ErbB3 binding protein, p48, mediates protein kinase B/Akt-dependent HDM2 stabilization and nuclear localization
چکیده انگلیسی
p48 is a long isoform of the ErbB3 binding protein that has oncogenic functions including promotion of carcinogenesis and induction of malignant transformation through negative regulation of tumor suppressor p53. Here, we show that high level of p48 protein expression leads to enhance HDM2 phosphorylation by Akt and inhibits the self-ubiquitination of HDM2 by up-regulation of Akt activity, thereby promoting its protein stability. Moreover, p48 expression leads to accumulated nuclear localization of HDM2, whereas p48 depletion disturbs its nuclear localization. Hence, higher expression of p48 in cancer cells reduces p53 levels through modulation of HDM2 nuclear localization and protein stability via regulation of its Akt-mediated phosphorylation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Cell Research - Volume 318, Issue 2, 15 January 2012, Pages 136-143
نویسندگان
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