Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA311217 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR3152430.fastq.gz | Fastqsanger.gz | |||
| SRR3152440.fastq.gz | Fastqsanger.gz | |||
| SRR3152450.fastq.gz | Fastqsanger.gz | |||
| SRR3152460.fastq.gz | Fastqsanger.gz | |||
| SRR3152470.fastq.gz | Fastqsanger.gz |
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Project description:miRNA regulatory networks in male and female mouse ESC-to-EpiSC differentiation [miRNA]
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Project description:miRNA regulatory networks in male and female mouse ESC-to-EpiSC differentiation
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Project description:Pluripotent stem cell lines derived from embryos of different stages have distinct pluripotent ground states, but similar levels of the transcription factor Oct4. Epiblast-derived pluripotent stem cells (EpiSCs), in contrast to embryonic stem (ES) cells, cannot form chimeras. We show that EpiSCs express lower levels of the transcription factors Sox2 and Klf4 than ES cells and have limited reprogramming potential, as shown by cell fusion. Sox2 overexpression dramatically increases the reprogramming potential, chimera formation, and germline contribution of EpiSCs. Therefore, although Oct4 is essential for reprogramming, the level of Sox2 defines both the reprogramming capability and the pluripotent ground states. RNA samples to be analyzed on microarrays were prepared using Qiagen RNeasy columns with on-column DNA digestion. 300 ng of total RNA per sample was used as input into a linear amplification protocol (Ambion), which involved synthesis of T7-linked double-stranded cDNA and 12 hrs of in-vitro transcription incorporating biotin-labelled nucleotides. Purified and labelled cRNA was then hybridized for 18 hrs onto MouseRef-8 v2 expression BeadChips (Illumina) according to the manufacturer's instructions. After washing, as recommended, chips were stained with streptavidin-Cy3 (GE Healthcare) and scanned using the iScan reader (Illumina) and accompanying software. Samples were hybridized as biological replicates. 12 sample types were analyzed, each of them in duplicate. ESCm: Mouse ESC male; ESCf: Mouse ESC OG2 female; F9 EC: F9 EC (mouse embryonic carcinoma cell); F9-Sox2: F9 EC (mouse embryonic carcinoma cell) overexpressing wild type Sox2; EpiSCf: Mouse EpiSC OG2 female; Epi-Sox2f: Mouse EpiSC Sox2 (OG2 female) overexpressing wild type Sox2; P19 EC: P19 EC (mouse embryonic carcinoma cell); P19-Sox2: P19 EC (mouse embryonic carcinoma cell) overexpressing wild type Sox2; EpiSCm: Mouse EpiSC (GOF18 male) (duplicates); EpiSox2mL2: Mouse EpiSC Sox2 (GOF18 male) overexpressing wild type Sox2 cultured in condition EpiSC medium (CM); EpiSox2mE1: Mouse EpiSC Sox2 (GOF18 male) overexpressing wild type Sox2 cultured in ESC medium (ESC like1); EpiSox2mE2: Mouse EpiSC Sox2 (GOF18 male) overexpressing wild type Sox2 cultured in ESC medium (ESC like2).
2010-12-31 | E-GEOD-15358 | biostudies-arrayexpress
Project description:Early stem cell differentiation programmes are tightly controlled by coordinated pre- and post-transcriptional regulatory networks. In this study, we investigate and characterise miRNA networks responsible for the post-translational gene regulation in early differentiation in both female and male mouse embryonic stem cells. We obtained miRNA-Seq and RNA-Seq profiles of male and female cells from day 0 (D0; 2i) to days 4, 10, 20 and 30. Interestingly, we observed a significant difference in gene expression profiles between females and males, both in terms of identity of regulated genes and of temporal characteristics. Similarly, we observed differences between miRNA species playing significant regulatory roles in female and male cells.
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Project description:Embryonic stem cells (ESCs) comprise at least two populations of cells with divergent states of pluripotency. Here, we show that epiblast stem cells (EpiSCs) also comprise two distinct cell populations that can be distinguished by the expression of a specific Oct4-GFP marker. These two subpopulations, Oct4-GFP positive and negative EpiSCs, are capable of converting into each other in vitro. Oct4-GFP positive and negative EpiSCs are distinct from ESCs with respect to global gene expression pattern, epigenetic profile, and Oct4 enhancer utilization. Oct4-GFP negative cells share features with cells of the late mouse epiblast and cannot form chimeras. However, Oct4-GFP positive EpiSCs, which only represent a minor EpiSC fraction, resemble cells of the early epiblast and can readily contribute to chimeras. Our findings suggest that the rare ability of EpiSCs to contribute to chimeras is due to the presence of the minor EpiSC fraction representing the early epiblast. RNA samples to be analyzed on microarrays were prepared using Qiagen RNeasy columns with on-column DNA digestion. 300 ng of total RNA per sample was used as input into a linear amplification protocol (Ambion), which involved synthesis of T7-linked double-stranded cDNA and 12 hrs of in-vitro transcription incorporating biotin-labelled nucleotides. Purified and labelled cRNA was then hybridized for 18 hrs onto MouseRef-8 v2 expression BeadChips (Illumina) according to the manufacturer's instructions. After washing, as recommended, chips were stained with streptavidin-Cy3 (GE Healthcare) and scanned using the iScan reader (Illumina) and accompanying software. Samples were hybridized as biological replicates. 6 samples were analyzed, five of them in duplicate and one of them (T9-EpiSC) a single time (11 total samples). ESC: Mouse ESC male; EpiSC: Mouse EpiSC male GOF18; Epi-Sox2: Mouse EpiSC Sox2 male GOF18 (Overexpressing WT Sox2) cultured in condition EpiSC medium (CM); EpiSC-GFP-: Mouse E3 EpiSC grown in CM and FACS-sorted for GFP-; EpiSC-GFP+: Mouse E3 EpiSC grown in CM and FACS-sorted for GFP+; T9-EpiSC: Mouse T9 EpiSC grown on medium-density CF1 MEFs in UM, 2d -Fgf2, harvested without MEFs. The supplementary file 'GSE17984_non-normalized_data.txt' contains non-normalized data for Samples GSM450294-GSM450304.
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Project description:Embryonic stem cells (ESC) are derived from the inner cell mass of the blastocyst in the presence of leukemia inhibitory factor (LIF). In vivo these cells then differentiate into epi stem cells (EpiSC) that can be derived from the Epiblast in presence of Fgf2 and ActivinA. In this study, female ESCs cultured in 2i medium have been differentiated into EpiSC for 3.5 days in vitro by addition of Fgf2 and Activin A. The gene expression profile was analyzed every 4-12 h using mouse exon arrays.
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Project description:The requirements for self-renewal differ between EpiSCs and ES cells and the underlying mechanism is largely unknown. Here we show that mouse EpiSCs can be efficiently derived and robustly propagated even from single cells, using two small-molecule inhibitors: CHIR99021 and XAV939. The whole-genome microarray analyses is performed to confirm the identity of EpiSC maintained in CHIR/XAV by comparing the expression profile in EpiSC-CHIR/XAV to those in ESC maintained in 2i and EpiSC maintained in FGF2/activin. Total RNA from ESC-2i, EpiSC-CHIR/XAV, and EpiSC-FGF2/activin were extracted for microarray analisys
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