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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

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE52958 | GEO | 2014/05/22

SECONDARY ACCESSION(S): PRJNA230532

REPOSITORIES: GEO

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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

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2014-05-22 | E-GEOD-52958 | biostudies-arrayexpress

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 [ChIP-seq]

Project description: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. Examination of 2 different histone modifications (H3K4me3 and H3K27me3) in 2 cell types (WT and lincRNA-p21 KO) in the presence and absence of Doxorubicin.

2014-05-22 | E-GEOD-52956 | biostudies-arrayexpress

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]

Project description: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.

2014-05-22 | E-GEOD-52957 | biostudies-arrayexpress

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]

2014-05-22 | GSE52957 | GEO

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 [ChIP-seq]

2014-05-22 | GSE52956 | GEO

LincRNA-p21 activates p21 in cis to promote Polycomb target gene expression and to enforce the G1/S checkpoint.

Project description: Not available

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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

Project description: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

| PRJNA230532 | ENA

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