Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcriptome Analysis of LincRNA TUNA Knockdown in Mouse Embryonic Stem Cells

ABSTRACT: Globel gene expression was analyzed by RNA-seq to study the role of lincRNA TUNA in pluripotent mouse embryonic stem cells. mRNA profiles of CCE mES cells with shRNA-mediated depletion of lincRNA TUNA on days 2, 4, and 6, compared to a control shRNA.

ORGANISM(S): Mus musculus

SUBMITTER: xiayu huang

PROVIDER: E-GEOD-46730 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

An evolutionarily conserved long noncoding RNA TUNA controls pluripotency and neural lineage commitment.

Lin Nianwei N Chang Kung-Yen KY Li Zhonghan Z Gates Keith K Rana Zacharia A ZA Dang Jason J Zhang Danhua D Han Tianxu T Yang Chao-Shun CS Cunningham Thomas J TJ Head Steven R SR Duester Gregg G Dong P Duc Si PD Rana Tariq M TM

Molecular cell 20140213 6

Here, we generated a genome-scale shRNA library targeting long intergenic noncoding RNAs (lincRNAs) in the mouse. We performed an unbiased loss-of-function study in mouse embryonic stem cells (mESCs) and identified 20 lincRNAs involved in the maintenance of pluripotency. Among these, TUNA (Tcl1 Upstream Neuron-Associated lincRNA, or megamind) was required for pluripotency and formed a complex with three RNA-binding proteins (RBPs). The TUNA-RBP complex was detected at the promoters of Nanog, Sox ...[more]

PMID: 24530304

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Project description:Bmi1 is a component of the Polycomb-repressive complexes (PRC) and essential for maintaining the pool of adult stem cells. PRC are key regulators for embryonic development by modifying chromatin architecture and maintaining gene repression. To assess the role of Bmi1 in pluripotent stem cells and upon exit from pluripotency during differentiation, we studied forced Bmi1 expression in mouse embryonic stem cells (ESC). We found that ESC do not express detectable levels of Bmi1 RNA and protein and that forced Bmi1 expression had no obvious influence on ESC self-renewal. However, upon ESC differentiation Bmi1 effectively enhanced development of hematopoietic cells. Global transcriptional profiling identified a large array of genes that were differentially regulated during ESC differentiation by Bmi1. Importantly, we found that Bmi1 induced a prominent up-regulation of Gata2, a zinc finger transcription factor, which is essential for primitive hematopoietic cell generation from mesoderm. In addition, Bmi1 caused sustained growth and a more than 100-fold expansion of ESC-derived hematopoietic stem/progenitor cells within 2-3 weeks of culture. The enhanced proliferative capacity was associated with reduced Ink4a/Arf expression in Bmi1-transduced cells. Taken together, our experiments demonstrate distinct activities of Bmi1 in ESC and ESC-derived hematopoietic progenitor cells. In addition, Bmi1 enhances the propensity of ESC in differentiating towards the hematopoietic lineage. Thus, Bmi1 could be a candidate gene for engineered adult stem cell derivation from ESC. 8 samples in total. Bmi1 embryonic stem cells sample_1 (Bmi1_ESC_1) Bmi1 embryonic stem cells sample_2 (Bmi1_ESC_2) Untreated CCE embryonic stem cells (CCE_ESC_Control) Empty vector CCE embryonic stem cells (CCE_ESC_Vector) Bmi1 embryoid body sample_1 (Bmi1_EB_1) Bmi1 embryoid body sample_2 (Bmi1_EB_2) Empty vector control embryoid body sample_1 (Vector_EB_1) Empty vector control embryoid body sample_2 (Vector_EB_2)

Dataset Information

Transcriptome Analysis of LincRNA TUNA Knockdown in Mouse Embryonic Stem Cells

Publications

An evolutionarily conserved long noncoding RNA TUNA controls pluripotency and neural lineage commitment.

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