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A Pin1/Mutant p53 Axis Promotes Aggressiveness in Breast Cancer.

机译:Pin1 / mutant p53轴可促进乳腺癌的侵略性。

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摘要

TP53 missense mutations dramatically influence tumor progression, however, their mechanism of action is still poorly understood. Here we demonstrate the fundamental role of the prolyl isomerase Pin1 in mutant p53 oncogenic functions. Pin1 enhances tumorigenesis in a Li-Fraumeni mouse model and cooperates with mutant p53 in Ras-dependent transformation. In breast cancer cells, Pin1 promotes mutant p53 dependent inhibition of the antimetastatic factor p63 and induction of a mutant p53 transcriptional program to increase aggressiveness. Furthermore, we identified a transcriptional signature associated with poor prognosis in breast cancer and, in a cohort of patients, Pin1 overexpression influenced the prognostic value of p53 mutation. These results define a Pin1/mutant p53 axis that conveys oncogenic signals to promote aggressiveness in human cancers.
机译:TP53错义突变显着影响肿瘤的进展,但是,其作用机理仍知之甚少。在这里,我们证明了脯氨酰异构酶Pin1在突变p53致癌功能中的基本作用。 Pin1增强Li-Fraumeni小鼠模型中的肿瘤发生,并在Ras依赖性转化中与突变体p53协同作用。在乳腺癌细胞中,Pin1促进了对突变体p53的抗转移因子p63的抑制,并诱导了突变体p53的转录程序,从而增强了攻击性。此外,我们确定了与乳腺癌预后不良相关的转录特征,并且在一组患者中,Pin1过表达影响了p53突变的预后价值。这些结果定义了一个Pin1 / mutant p53轴,该轴传递致癌信号以促进人类癌症的侵袭性。

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