Similar Datasets
Project description:Gene expression profiling of human iPSCs [201B7] under on-feeder, feeder-free [StemFit], and FGF inhibitor [100 nM PD173074] -treated cultures, and differentiating cells.
2022-03-09 | GSE195689 | GEO
Project description:Single-cell gene expression profiling of 4-month-old brain organoids from feeder-free iPSCs with PD173074 treatment
2022-03-09 | GSE195690 | GEO
Project description:Bulk RNAseq anaysis of PSCs and differentiating cells under on-feeder and feeder-free cultures
| PRJNA801842 | ENA
Project description:Naïve mouse ESCs exhibit full term developmental competence thus hold great potential in regenerative medicine. Maintaining genome stability is essential for potential application of ESCs in stem cell therapy. While ESC potency fluctuate with retrovirus activity, it is unclear whether long-term cultures affect retrotransposition and genomic stability. We compared retrotransposons in naïve ESCs using various approaches. We show that feeder-serum based culture conditions and small molecule LCDM maintain appropriate expression of retrovirus activity following long-term cultures, whereas cultures under 2iLif and a2i result in aberrant upregulation of retrotransposons. This leads to high frequent retrotransposition. Moreover, naïve ESCs on feeder-serum based culture conditions and small molecule LCDM still generate complete ESC pups by TEC assay, functional test of pluripotency, following long-term cultures, despite that all culture conditions maintain high expression levels of pluripotent genes such as Oct4, Nanog, Klf4 and Sox2. Meanwhile, long telomeres are maintained in ESCs under cultures in Feeder-serum and LCDM conditions but telomeres shortened in other conditions with increasing passages. These data provide insights into retrotransposition, genomic stability and pluripotency of naïve ESCs.
2023-09-12 | GSE157873 | GEO
Project description:Naïve mouse ESCs exhibit full term developmental competence thus hold great potential in regenerative medicine. Maintaining genome stability is essential for potential application of ESCs in stem cell therapy. While ESC potency fluctuate with retrovirus activity, it is unclear whether long-term cultures affect retrotransposition and genomic stability. We compared retrotransposons in naïve ESCs using various approaches. We show that feeder-serum based culture conditions and small molecule LCDM maintain appropriate expression of retrovirus activity following long-term cultures, whereas cultures under 2iLif and a2i result in aberrant upregulation of retrotransposons. This leads to high frequent retrotransposition. Moreover, naïve ESCs on feeder-serum based culture conditions and small molecule LCDM still generate complete ESC pups by TEC assay, functional test of pluripotency, following long-term cultures, despite that all culture conditions maintain high expression levels of pluripotent genes such as Oct4, Nanog, Klf4 and Sox2. Meanwhile, long telomeres are maintained in ESCs under cultures in Feeder-serum and LCDM conditions but telomeres shortened in other conditions with increasing passages. These data provide insights into retrotransposition, genomic stability and pluripotency of naïve ESCs.
2023-09-12 | GSE157875 | GEO
Project description:Naïve mouse ESCs exhibit full term developmental competence thus hold great potential in regenerative medicine. Maintaining genome stability is essential for potential application of ESCs in stem cell therapy. While ESC potency fluctuate with retrovirus activity, it is unclear whether long-term cultures affect retrotransposition and genomic stability. We compared retrotransposons in naïve ESCs using various approaches. We show that feeder-serum based culture conditions and small molecule LCDM maintain appropriate expression of retrovirus activity following long-term cultures, whereas cultures under 2iLif and a2i result in aberrant upregulation of retrotransposons. This leads to high frequent retrotransposition. Moreover, naïve ESCs on feeder-serum based culture conditions and small molecule LCDM still generate complete ESC pups by TEC assay, functional test of pluripotency, following long-term cultures, despite that all culture conditions maintain high expression levels of pluripotent genes such as Oct4, Nanog, Klf4 and Sox2. Meanwhile, long telomeres are maintained in ESCs under cultures in Feeder-serum and LCDM conditions but telomeres shortened in other conditions with increasing passages. These data provide insights into retrotransposition, genomic stability and pluripotency of naïve ESCs.
2023-09-12 | GSE157874 | GEO
Project description:Whole-genome bisulfite sequencing anaysis of PSCs
| PRJNA801845 | ENA
Project description:Single-cell RNAseq anaysis of 4-month-old brain organoids from feeder-free iPSCs with PD173074 treatment
| PRJNA801841 | ENA
Project description:Presomitic mesoderm (PSM) cells are the precursors of the somites, which flank both sides of the neural tube and give rise to the musculo-skeletal system shaping the vertebrate body. WNT and FGF signalling control the formation of both the PSM and the somites, and show a graded distribution with highest levels in the posterior PSM. We have employed reporter for the PSM control gene Tbx6 to investigate the differentiation of mouse ESCs from the naĂŻve state to PSM state. Feeder-free ESCs were seeded and grown on fibronectin (3-5 ng/ml)-coated plates in ESC medium containing LIF, PD0325901 and CHIR99021 (2i medium) to bring them to a naive state of pluripotency. Following this, the cells were brought to an EpiSC state by treating them with Activin A and FGF2. The EpiSC-like cells were then differentiated to PSM using CHIR99021 either alone or along with FGF ligands, FGF2 or FGF8 (Low concentration: 10 ng/ml or High concentration: 250ng/ml).
2016-06-01 | E-MTAB-3784 | biostudies-arrayexpress
Project description:Fgf signaling via Erk activation has been associated with both neural induction and the generation of a primed state for the differentiation of embryonic stem cells (ESCs) to all somatic lineages. To dissect the role of Erk in both ESC self-renewal and lineage specification we explore the requirements for this pathway in various in vitro differentiation settings. A combination of pharmacological inhibition of Erk signaling and genetic loss of function experiments reveal a role for Erk signaling in suppressing endodermal differentiation, but not neural specification. Activation of Erk signaling in ESCs de-represses primitive endoderm (PrE) gene expression as a consequence of inhibiting the pluripotent/epiblast network. The early response to Erk activation correlates with functional PrE priming while sustained Erk activity results in PrE differentiation. Taken together, our results suggest that Erk signaling suppresses pluripotent gene expression to enable endodermal differentiation. We use microarray analysis to determine the transcription response to Erk1/2 in mouse embryonic stem cells across a 24 hour window of time Mouse ESCs carrying a tamoxifen inducible constitutively active c-Raf fusion protein were stimulated for 6 time points (30minutes, 1 hour, 2 hours, 4 hours, 8 hours, and 24 hours) in the presence of 250nM PD173074. Uninduced (0h hours) and DMSO only treated cells served as controls.
2015-01-01 | E-GEOD-59755 | biostudies-arrayexpress