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- Title
Epigenetic priming of an epithelial enhancer by p63 and CTCF controls expression of a skin-restricted gene XP33.
- Authors
Smirnov, Artem; Lena, Anna Maria; Tosetti, Giulia; Yang, Xue; Cappello, Angela; Citterich, Manuela Helmer; Melino, Gerry; Candi, Eleonora
- Abstract
The transcription factor p63 is a renowned master regulator of gene expression of stratified epithelia. While multiple proteins have been identified as p63 bona fide targets, little is known about non-coding RNAs (ncRNAs) whose transcription is controlled by p63. Here, we describe a skin-specific non-coding RNA XP33 as a novel target of p63. XP33 levels are increased during keratinocyte differentiation in vitro, while its depletion results in decreased expression of late cornified gene LCE2D. By using publicly available multi-omics data, we show that CTCF and p63 establish an epithelial enhancer to prime XP33 transcription in a tissue-restricted manner. XP33 promoter and enhancer form a chromatin loop exclusively in keratinocytes but not in other cell types. Moreover, the XP33 enhancer is occupied by differentiation-specific factors that control XP33 transcription. Altogether, we identify a tissue-specific non-coding RNA whose expression is epigenetically regulated by p63 and CTCF.
- Publication
Cell Death Discovery, 2023, Vol 9, Issue 1, p1
- ISSN
2058-7716
- Publication type
Article
- DOI
10.1038/s41420-023-01716-3