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Expression and transcriptional regulation dynamics of hepatic lincRNAs

ABSTRACT: Gene expression in adult male and female mouse liver was assayed by RNA-seq, as part of a study on hepatic lincRNAs.

ORGANISM(S): Mus musculus

PROVIDER: GSE65444 | GEO | 2015/10/21

SECONDARY ACCESSION(S): PRJNA274014

REPOSITORIES: GEO

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Gene expression profile of hepatic lincRNAs in female mouse liver using nuclear RNA-Seq

Project description:Gene expression in adult female mouse liver was assayed by nuclear RNA-seq, as part of a study of hepatic lincRNAs.

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Project description:Gene expression in adult male mouse liver was assayed by nuclear RNA-seq, as part of a study of hepatic lincRNAs.

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Response of liver-expressed genes (including lincRNAs) to continuous growth hormone (GH) infusion

Project description:Gene expression in livers of adult male mice subjected to continuous GH infusion using Alzet osmotic minipumps for 1, 4 or 7 days was assayed by RNA-seq, as part of a study of growth hormone regulation of hepatic lincRNAs (PMID:26459762) and protein-coding genes (PMID:28694329).

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Gene expression profile of adult male mouse liver using total liver RNA-seq and nuclear liver RNA-Seq

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Expression and regulation of lincRNAs during T cell development and differentiation

2013-09-23 | GSE48138 | GEO

Expression and regulation of lincRNAs during T cell development and differentiation

Project description:Although lincRNAs are implicated in regulating gene expression in various tissues, little is known about lincRNA transcriptomes in the T cell lineages. Here we identify 1,524 lincRNAs in 42 T cell samples from early T cell progenitors to terminally differentiated T helper subsets. Our analysis revealed highly dynamic and cell-specific expression patterns of lincRNAs during T cell differentiation. Importantly, these lincRNAs are located in genomic regions enriched for protein-coding genes with immune-regulatory functions. Many of these transcripts are bound and regulated by the key T cell transcription factors, T-bet, GATA3, STAT4 and STAT6. We demonstrate that the lincRNA LincR-Ccr2-5'AS, together with GATA3, is an essential component of a regulatory circuit in Th2-specific gene expression. To obtain comprehensive profiles of lincRNA expression during the development and differentiation of T cell lineages, we purified CD4-CD8 double negative (DN) cells (DN1, DN2, DN3 and DN4), double positive (DP) cells (CD4+CD8+CD3low and CD4+CD8intCD69+), single positive (SP) CD4 and CD8 cells, and thymic-derived regulatory T cells (tTreg) from thymi of C57BL/6 mice. Additionally, we obtained Th1, Th2, Th17 and iTreg cells by in vitro differentiation of naM-CM-/ve CD4 T cells for a various length of time in culture (4 hrs, 8 hrs, 12 hrs, 24 hrs, 48 hrs, 72 hrs, 1 week, 2weeks). Total and/or polyadenylated RNAs from these cells was analyzed using RNA-Seq. To understand the regulation of lincRNAs by T cell master regulator T-bet, we compared the transcriptiomes between T-bet deficient Th1 cells and control Th1 cells. We did similar experiments and data analysis for STAT4 (Th1), GATA3 (Th2) and STAT6 (Th2). Finally, to address the funcation of a Th2-specifically expressed lincRNA, lincR-Ccr2-5'AS, we compared the transcriptomes between lincR-Ccr2-5'AS knockdown Th2 cells and control Th2 cells.

2013-09-23 | E-GEOD-48138 | biostudies-arrayexpress

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The transposable element composition of human lincRNAs reveals a role for HERVH elements to promote stem cell specific expression of lincRNAs

Project description:Numerous studies over the past decade have elucidated a substantial set of long intergenic noncoding RNAs (lincRNAs). It has since become clear that lincRNAs constitute an important layer of genome regulation across a wide spectrum of species. Yet, the factors governing their evolution and origins remain relatively unexplored. One possible factor that may have shaped lincRNA biology are transposable elements (TEs). Here we set out to comprehensively characterize the TE content of lincRNAs relative to genomic averages and protein coding transcripts. Our analysis of the TE composition across 9241 human lincRNAs revealed that, in sharp contrast to protein coding genes, a striking majority (83%) of lincRNAs contain a TE, and TEs comprise 42% of lincRNA transcript sequences. LincRNA TE composition varies significantly from genomic averages, being depleted of LI and Alu elements and enriched for a broad class of endogenous retroviruses (ERVs). Furthermore, specific TE families occur in biased positions and orientations within lincRNAs, particularly at their transcription start sites, suggesting a role in the origin of those lincRNAs. Finally, we find that TEs can drive gene expression regulation of lincRNAs—we observed a dramatic correlation between lincRNAs containing HERVH elements and almost exclusive expression in pluripotent cells. Conversely, those lincRNAs that are devoid of TEs are more highly expressed in testis. Collectively, TEs pervade lincRNAs and have shaped lincRNA evolution and function via bestowing tissue-specific expression from donated transcriptional regulatory signals. We extracted profiled the transcriptome expression polyadenylated mRNA-Seq. We then used these to reconstruct the transcriptome using de-novo assemblers and identify long non coding RNAs and their expression.

2013-01-22 | E-GEOD-38993 | biostudies-arrayexpress

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