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Journal Article

Dissecting the DNA binding landscape and gene regulatory network of p63 and p53


Kretzmer,  Helene
Dept. of Genome Regulation (Head: Alexander Meissner), Max Planck Institute for Molecular Genetics, Max Planck Society;

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Riege, K., Kretzmer, H., Sahm, A., McDade, S. S., Hoffmann, S., & Fischer, M. (2020). Dissecting the DNA binding landscape and gene regulatory network of p63 and p53. eLife, 9: e63266. doi:10.7554/eLife.63266.

Cite as: http://hdl.handle.net/21.11116/0000-0007-8188-D
The transcription factor p53 is the best-known tumor suppressor, but its sibling p63 is a master regulator of epidermis development and a key oncogenic driver in squamous cell carcinomas (SCC). Despite multiple gene expression studies becoming available, the limited overlap of reported p63-dependent genes has made it difficult to decipher the p63 gene regulatory network. Particularly, analyses of p63 response elements differed substantially among the studies. To address this intricate data situation, we provide an integrated resource that enables assessing the p63-dependent regulation of any human gene of interest. We use a novel iterative de novo motif search approach in conjunction with extensive ChIP-seq data to achieve a precise global distinction between p53 and p63 binding sites, recognition motifs, and potential co-factors. We integrate these data with enhancer:gene associations to predict p63 target genes and identify those that are commonly de-regulated in SCC representing candidates for prognosis and therapeutic interventions.