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Expression data from embryonic stem cells differentiation

ABSTRACT: Pluripotency-associated transcription factor Foxd3 is required for maintaining pluripotent cells. However, the molecular mechanisms underlying its function are largely unknown. Here, we report that Foxd3 maintains the ESC identity through counteracting differentiation induction of Calcienurin-NFAT signaling. We used microarrays to detail the global programme of gene expression underlying overexpression of Foxd3 and NFATc3 in ESCs or deletion of Foxd3 in ESCs

ORGANISM(S): Mus musculus

PROVIDER: GSE58960 | GEO | 2014/08/18

SECONDARY ACCESSION(S): PRJNA253990

REPOSITORIES: GEO

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Expression data from embryonic stem cells differentiation

Project description:Pluripotency-associated transcription factor Foxd3 is required for maintaining pluripotent cells. However, the molecular mechanisms underlying its function are largely unknown. Here, we report that Foxd3 maintains the ESC identity through counteracting differentiation induction of Calcienurin-NFAT signaling. We used microarrays to detail the global programme of gene expression underlying overexpression of Foxd3 and NFATc3 in ESCs or deletion of Foxd3 in ESCs Total RNA was extracted from the mESCs under the following conditions:1) a control group transfected with an empty vector; a Foxd3 overexpression group; a NFATc3 overexpression group and a combination group with Foxd3 and NFATc3 overexpression 2) Foxd3fl/fl:Cre-ERT cells treated with Tamoxifen for 0 day and 2 days.

2014-08-18 | E-GEOD-58960 | biostudies-arrayexpress

Functions of calcineurin-NFAT signaling pathway in human embryonic stem cells

Project description:Calcineurin-NFAT signaling is associated with a wide range of biological processes and diseases. Our previous study showed that this pathway plays a critical role in mouse embryonic stem cell (mESC) differentiation. However, its function in human ESCs (hESCs) remains unclear. Here, we report that expression of PPP3CC, the gene encoding the catalytic subunit of calcineurin, increases along with the process of hESC differentiation, and its knockdown (KD) enhances the self-renewal ability of hESCs with a simultaneous reduction in the expression of differentiation-associated markers regardless of culture conditions. Moreover, we observed that NFATC3 translocates from the cytoplasm to the nucleus when hESCs exit from a self-renewal state. These results indicate that calcineurin-NFAT signaling is activated and required during hESC differentiation. Mechanistically, we also found that in hESCs NFATC3 interacts with JUN， one of AP-1 complex subunit, and co-expression of exogenous NFATC3 and JUN upregulates lineage markers remarkably even under a self-renewal culture condition. Additionally, inhibition of this cascade represses MAPK signaling rapidly, including ERK1/2, JNK and P38. Taken together, this study delineates the importance of the calcineurin-NFATC3/JUN signaling cascade for the pluripotency maintenance of hESCs.

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Foxd3 binding at enhancers controls developmental timing of gene expression by regulation of histone acetylation [ChIP-seq]

Project description:Transcription factor/enhancer interactions determine cell specific gene expression. Here, we followed enhancers during differentiations of embryonic stem (ESCs) to epiblast like cells (EpiLCs). There were highly dynamic changes in histone lysine 27 acetylation at enhancer sites throughout the genome. These sites were enriched for a Foxd3 binding motif, a forkhead transcription factor essential in early embryonic development. Surprisingly, Foxd3 occupied largely mutually exclusive sites in the ESCs versus EpiLCs. Foxd3 bound to nucleosome occupied regions, simultaneously evicting the histones while inhibiting full gene expression through the recruitment of histone deacetylases. Knockout of Foxd3 resulted in hyperacetylation and transcriptional upregulation of neighboring genes, many of which were further upregulated at later stages of differentiation. These data show that Foxd3 primes enhancer sites during pregastrulation by removing nucleosomes, yet suppresses neighboring histone hyperacetylation. Such a mechanism may be common to many transcription factors that prepare enhancers for later gene activation during development. ChIP-seq of H3K4me1, H3K27ac, H3K27me3, p300, H3K4me3, RNA Pol2 and Oct4 in four pluripotent states: embryonic stem cells (ESCs) day 1 ESC differentiation, Epi-like stem cells (EpiLCs), and epiblast stem cells (EpiSCs); ChIP-seq of 3XFlag tagged Foxd3 in ESCs and EpiLCs; ChIP-seq of H3K4me1, H3K27ac, H3K27me3, p300 and H3K4me3 in Foxd3 conditional knockout cells (tamoxifen-inducible) -/+ 36h Tamoxifen treatemnt. ChIP seq of Flag-Foxd3 (third replicate), ChIP-seq of HDAC1 and Brg1 in WT and Foxd3 KO cells and MNase-ChIP-seq of H3K4me1

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NPTX1 is a Critical Regulator of Neural Induction in Human Pluripotent Stem Cells

Project description:NPTX1 is a key inducer of neural lineages from the human ESC. We used microarrays to detail the global programme of gene expression underlying neural induction by NPTX1.

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NPTX1 is a Critical Regulator of Neural Induction in Human Pluripotent Stem Cells

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Project description:Self-renewal and pluripotency are hallmarks of embryonic stem cells (ESCs). However, signaling pathways triggering their transition from self-renewal to differentiation are not well defined. Here, we report that the calcineurin-NFAT signaling pathway is both necessary and sufficient to switch ESCs from an undifferentiated state to early differentiation.To gain an insight into the function of calcinerin-NFAT signaling in ESC lineage commitment, we examined the repertoire of genes changed after LIF withdrawal alone, LIF withdrawal in the presence of cyclosporine A (CsA), a specific inhibitor of calcinerin and forced expression of active forms of calcineurin (deltaCnA) in the presence of LIF,and identified distinct classes of up and down regulated genes by calcineurin-NFAT signaling in mouse embryonic stem cells.

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Global gene expression analyses of the Nr5a2 reprogrammed cells

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Foxd3 binding at enhancers controls developmental timing of gene expression by regulation of histone acetylation [expression array]

Project description:Transcription factor/enhancer interactions determine cell specific gene expression. Here, we followed enhancers during differentiations of embryonic stem (ESCs) to epiblast like cells (EpiLCs). There were highly dynamic changes in histone lysine 27 acetylation at enhancer sites throughout the genome. These sites were enriched for a Foxd3 binding motif, a forkhead transcription factor essential in early embryonic development. Surprisingly, Foxd3 occupied largely mutually exclusive sites in the ESCs versus EpiLCs. Foxd3 bound to nucleosome occupied regions, simultaneously evicting the histones while inhibiting full gene expression through the recruitment of histone deacetylases. Knockout of Foxd3 resulted in hyperacetylation and transcriptional upregulation of neighboring genes, many of which were further upregulated at later stages of differentiation. These data show that Foxd3 primes enhancer sites during pregastrulation by removing nucleosomes, yet suppresses neighboring histone hyperacetylation. Such a mechanism may be common to many transcription factors that prepare enhancers for later gene activation during development. Total RNA obtained Foxd3 knockout embryonic stem cells (ESCs) and epiblast-like cells (EpiLCs) (treated with 1uM tamoxifen for 36h to induce knockout) compared to wild-type controls

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Genome-wide analysis of gene expression regulated by calcineurin-NFAT signaling in mouse embryonic stem cells

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