alexa TAp63 suppresses metastasis through coordinate regulation of Dicer and miRNAs.
Oncology

Oncology

Breast Cancer: Current Research

Author(s): Su X, Chakravarti D, Cho MS, Liu L, Gi YJ, , Su X, Chakravarti D, Cho MS, Liu L, Gi YJ,

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Abstract Aberrant expression of microRNAs (miRNAs) and the enzymes that control their processing have been reported in multiple biological processes including primary and metastatic tumours, but the mechanisms governing this are not clearly understood. Here we show that TAp63, a p53 family member, suppresses tumorigenesis and metastasis, and coordinately regulates Dicer and miR-130b to suppress metastasis. Metastatic mouse and human tumours deficient in TAp63 express Dicer at very low levels, and we found that modulation of expression of Dicer and miR-130b markedly affected the metastatic potential of cells lacking TAp63. TAp63 binds to and transactivates the Dicer promoter, demonstrating direct transcriptional regulation of Dicer by TAp63. These data provide a novel understanding of the roles of TAp63 in tumour and metastasis suppression through the coordinate transcriptional regulation of Dicer and miR-130b and may have implications for the many processes regulated by miRNAs.
This article was published in Nature and referenced in Breast Cancer: Current Research

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