Transcriptional network of p63 in human keratinocytes.
p63 is a transcription factor required for the development and maintenance of ectodermal tissues in general, and skin keratinocytes in particular. The identification of its target genes is fundamental for understanding the complex network of gene regulation governing the development of epithelia. We report a list of almost 1000 targets derived from ChIP on chip analysis on two platforms; all genes analyzed changed in expression during differentiation of human keratinocytes. Functional annotation highlighted unexpected GO terms enrichments and confirmed that genes involved in transcriptional regulation are the most significant. A detailed analysis of these transcriptional regulators in condition of perturbed p63 levels confirmed the role of p63 in the regulatory network. Rather than a rigid master-slave hierarchical model, our data indicate that p63 connects different hubs involved in the multiple specific functions of the skin.
Pozzi
Silvia
S
Department of Biomolecular Sciences and Biotechnologies, University of Milan, Milan, Italy.
Zambelli
Federico
F
Merico
Daniele
D
Pavesi
Giulio
G
Robert
Amélie
A
Maltère
Peggy
P
Gidrol
Xavier
X
Mantovani
Roberto
R
Vigano
M Alessandra
MA
D004475:Ectoderm / Q000254:growth & development; D004848:Epithelium / Q000254:growth & development; D005786:Gene Expression Regulation; D053263:Gene Regulatory Networks / Q000235:genetics*; D006801:Humans; D015603:Keratinocytes / Q000378:metabolism*; D012867:Skin / Q000166:cytology / Q000254:growth & development*; D015534:Trans-Activators / Q000235:genetics* / Q000378:metabolism; D014157:Transcription Factors; D025521:Tumor Suppressor Proteins / Q000235:genetics* / Q000378:metabolism
C115051:TP63 protein, human; D015534:Trans-Activators; D014157:Transcription Factors; D025521:Tumor Suppressor Proteins