Transcriptomics

Dataset Information

300

The p53-regulated long noncoding RNA, lincRNA-p21 promotes the expression of Polycomb target genes and enforces the G1/S checkpoint by activating p21 in cis [RNA-seq]


ABSTRACT: The p53-regulated long non-coding RNA, lincRNA-p21, has been proposed to promote apoptosis and to repress in trans the expression of genes in the p53 transcriptional network. Here, we report the generation of a conditional knockout mouse model developed to further examine lincRNA-p21 function. Using this genetic approach, we find that the primary function of lincRNA-p21 is to activate in cis the expression of its neighboring gene, the cyclin-dependent kinase inhibitor p21. Mechanistically, we show that lincRNA-p21 acts in concert with hnRNP-K as a co-activator for p53-dependent transcription of p21. Additional phenotypes of lincRNA-p21 deficiency, including deregulated expression and altered chromatin state of a set of Polycomb target genes, defective G1/S checkpoint, increased proliferation rates, and enhanced reprogramming efficiency could be attributed to diminished p21 levels. This study reveals a novel paradigm, whereby the long non-coding RNA lincRNA-p21 affects global gene expression and influences events in the p53 tumor suppressor pathway by acting in cis as a locus-restricted transcriptional co-activator for p53-mediated expression of p21. mRNAseq in 2 cell types (WT and lincRNA-p21 KO) in the presence and absence of Doxorubicin performed in biological triplicate.

ORGANISM(S): Mus musculus  

SUBMITTER: Jesse R Zamudio  

PROVIDER: E-GEOD-52957 | ArrayExpress | 2014-05-22

SECONDARY ACCESSION(S): SRP033473GSE52957PRJNA230535

REPOSITORIES: GEO, ArrayExpress, ENA

Similar Datasets

2014-05-22 | E-GEOD-52956 | ArrayExpress
| GSE52957 | GEO
| GSE57967 | GEO
2016-05-17 | PXD004140 | Pride
| GSE21761 | GEO
2015-05-01 | E-GEOD-66186 | ArrayExpress
2010-08-09 | E-GEOD-21761 | ArrayExpress
2016-06-09 | BIOMD0000000660 | BioModels
| GSE111355 | GEO
2014-02-03 | E-GEOD-46730 | ArrayExpress