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The p53 tumor suppressor is mutated in most human tumors. MDM2, a well-known inhibitor of p53, is overexpressed in a large number of tumors, suggesting that increased levels of MDM2 also contribute to tumorigenesis. A novel p53 inhibitor, MDM4, was more recently identified. The role of MDM4 in cancer development is not well understood. We set out to examine the levels of MDM4 by immunohistochemistry...
Stats are latent transcription factors involved in normal cellular signaling in response to cytokine or growth factor stimulation. Constitutive activation of Stats (primarily Stat3 and Stat5) has been implicated in growth dysregulation and oncogenesis. Furthermore, increased activation of Stats has been observed in several human tumors and tumor-derived cell lines. To assess the contribution of aberrant...
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