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- W2049088975 abstract "The endoribonuclease Dicer is a key factor in the production of microRNAs. The deregulation of microRNA expression and potentially Dicer itself have been implicated in cancer. Elsa Flores and colleagues now show that TAp63, a member of the p53 family of tumour suppressors, suppresses tumorigenesis and metastasis by directly controlling the expression of Dicer and Dicer-regulated microRNAs. The aberrant expression of microRNAs and of the enzymes that control their processing has been reported in tumours, but the mechanisms involved are not clear. It is now shown that TAp63, a member of the p53 family of tumour suppressors, suppresses tumorigeneis and metastasis by directly controlling the expression of Dicer (a microRNA-processing enzyme) and Dicer-regulated microRNAs. Aberrant expression of microRNAs (miRNAs) and the enzymes that control their processing have been reported in multiple biological processes including primary and metastatic tumours1,2,3,4,5,6, 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." @default.
- W2049088975 created "2016-06-24" @default.
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- W2049088975 date "2010-10-20" @default.
- W2049088975 modified "2023-09-26" @default.
- W2049088975 title "TAp63 suppresses metastasis through coordinate regulation of Dicer and miRNAs" @default.
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- W2049088975 doi "https://doi.org/10.1038/nature09459" @default.
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