Pluripotency is the differentiation capacity of particular cells exhibited in the early embryo in vivo and embryonic stem (ES) cells have been shown to originate from the inner cell mass (ICM) of an E3.5 blastocyst. Although the potential for ES cells to differentiate into the three germ layers is equated to ICM cells, they differ in the ability to maintain the capacity for self-renewal. Despite several studies on the maintenance of ES cells in the ground state of pluripotency, the precise mechanism of conversion from the ICM to the ES cell remains unclear. Here , we have examined the cell characteristics and expression profile within the intermediate stages of ES cell derivation from the ICM. Gene clustering and ontology (GO) analyses showed a significant change in the expression of epigenetic modifiers and DNA methylation-related genes in the intermediate stages. We have proposed that an epithelial-to-mesenchymal transition (EMT) blockage is required during derivation of mouse ES cells from E3.5 blastocysts. This study suggests a novel mechanistic insight into ES cell derivation and provides a time-course transcriptome profiling resource for the dissection of gene regulatory networks that underlie the transition from ICM to ES cells.
Blockage of the Epithelial-to-Mesenchymal Transition Is Required for Embryonic Stem Cell Derivation.
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View SamplesIn this study we have analyzed the global gene expression of nave mouse embryonic stem cells in different culture conditions including R2i (PD0325901+SB431542), 2i (PD0325901+CHIR99021), and also PD0325901+LIF and SB431542+LIF to show the similarities and differences between the conditions in maintaining pluripotency.
Inhibition of TGFβ signaling promotes ground state pluripotency.
Specimen part, Cell line
View SamplesSkeletal stem and progenitor cells from vertebrate species
No associated publication
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View SamplesToday, cell therapy is considered as one of the most promising alternates to cure end-stage diseases. Using human cells for transplantation needs in vitro culture and passages which arises the concern of malignant transformation of cells. To evaluate the effect of sub-culturing on whole genome transcriptome of skeletal muscle-derived cells (SMDCs), microarray analysis was performed on passages 3, 6, 9 and 12 of SMDCs in three replicates.
No associated publication
Specimen part
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Lhx5 controls mamillary differentiation in the developing hypothalamus of the mouse.
Specimen part, Treatment
View SamplesLhx5 mutant mouse embryos show loss of a neuronal nucleus of the brain called the mamillary body and essential for the formation of memories. We wanted to identify the genes that are responsible for the normal development of the mammillary body.
Lhx5 controls mamillary differentiation in the developing hypothalamus of the mouse.
Specimen part
View SamplesGene expression of human liver cells at different developmental stages.
No associated publication
Sex, Age, Specimen part
View SamplesVarious pluripotent stem (PS) cells can be isolated from early developing embryos in mouse. Among these, two kinds of PS cells were isolated from mouse blastocysts: conventional embryonic stem (ES) cells with domed morphology that are maintained with LIF and BMP for self-renewal, and FAB-ES cells with flat morphology that need bFGF, activinA and BIO for self-renewal. Here, we report a novel PS cell line from rat blastocysts, which is distinguishable from conventional ES cells but is morphologically similar to mouse epiblast stem cell (EpiSC) lines. We used microarrays to detail the global program of gene expression of rES and rPS.
The heterogeneity and dynamic equilibrium of rat embryonic stem cells.
Specimen part
View SamplesDuring development, lineage specification is controlled by several signaling pathways involving various transcription factors (TFs). Here, we studied the RE1-silencing transcription factor (REST) and identified an important role of this TF in cardiac differentiation. Using mouse embryonic stem cells (ESC) to model development, we analyzed the effect of REST knock-out on the ability to these cells to differentiate into the cardiac lineage. Detailed analysis of specific lineage markers expression showed selective down-regulation of endoderm markers in REST-null cells, thus contributing to a loss of cardiogenic signals.
A Role for RE-1-Silencing Transcription Factor in Embryonic Stem Cells Cardiac Lineage Specification.
Specimen part, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Oct4 switches partnering from Sox2 to Sox17 to reinterpret the enhancer code and specify endoderm.
Cell line, Treatment
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