FGF2 regulation of gene expression in stable inducible Neurons
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE92971 | GEO | 2017/12/28
SECONDARY ACCESSION(S): PRJNA359192
REPOSITORIES: GEO
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Project description:Transcriptional profiling of mouse spermatogonial stem cells (SSCs) comparing control untreated SSCs with SSCs with exogenous FGF2 withdrawn and FGFR inhibitor SU5402 supplemented (-F+S). Results provide insight into the mechanisms of FGF2-supported in vitro self-renewal of SSCs.
2010-08-01 | GSE21294 | GEO
Project description:In this work we investigated the molecular mechanisms that sustain the endothelial differentiation of murine embryonic stem cells (ES). When ES cells are co-cultured with the stromal PA6 cells in serum-free medium they differentiate mainly into neurons, thanks to the neural inducing activity exerted by the stroma. The addition of exogenous FGF2 allows also the differentiation of endothelial cells whereas, in presence of exogenous BMP4, ES cells differentiate exclusively into endothelium. The purpose of the gene expression analysis of FGF2 and BMP4 treated co-cultures versus the untreated ones was to profile the transcriptomes of FGF2 and BMP4-driven endothelial differentiation in order to detect molecules and pathways involved upon each of the two exogenous signals. In parallel we also performed transcriptome analysis of single monocultures of stromal PA6 cells to investigate the signals released by the stroma in response to FGF2 and BMP4. We found that TGFb1 is involved in the differentiation of ES cells into endothelium in response to FGF2 while Wnt6 and Wnt pathway sustain the endothelial differentiation of ES cells in response to BMP4. In this work we investigated the molecular mechanisms that sustain the endothelial differentiation of murine embryonic stem cells (ES). When ES cells are co-cultured with the stromal PA6 cells in serum-free medium they differentiate mainly into neurons, thanks to the neural inducing activity exerted by the stroma. The addition of exogenous FGF2 allows also the differentiation of endothelial cells whereas, in presence of exogenous BMP4, ES cells differentiate exclusively into endothelium. The purpose of the gene expression analysis of FGF2 and BMP4 treated co-cultures versus the untreated ones was to profile the transcriptomes of FGF2 and BMP4-driven endothelial differentiation in order to detect molecules and pathways involved upon each of the two exogenous signals. In parallel we also performed transcriptome analysis of single monocultures of stromal PA6 cells to investigate the signals released by the stroma in response to FGF2 and BMP4. We found that TGFb1 is involved in the differentiation of ES cells into endothelium in response to FGF2 while Wnt6 and Wnt pathway sustain the endothelial differentiation of ES cells in response to BMP4.
2021-09-05 | GSE164629 | GEO
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Project description:In this work we investigated the molecular mechanisms that sustain the endothelial differentiation of murine embryonic stem cells (ES). When ES cells are co-cultured with the stromal PA6 cells in serum-free medium they differentiate mainly into neurons, thanks to the neural inducing activity exerted by the stroma. The addition of exogenous FGF2 allows also the differentiation of endothelial cells whereas, in presence of exogenous BMP4, ES cells differentiate exclusively into endothelium. A pivotal role in ES cells differentiation is played by the stromal PA6 cells.To analyze the early signals released by PA6 cells in the medium of the co-cultures in response to FGF2 and BMP4, monolayers of PA6 cells were treated with recombinant FGF2 or BMP4 for 3 hours and the gene expression analysis of treated PA6 cultures versus the untreated ones was performed. In this work we investigated the molecular mechanisms that sustain the endothelial differentiation of murine embryonic stem cells (ES). When ES cells are co-cultured with the stromal PA6 cells in serum-free medium they differentiate mainly into neurons, thanks to the neural inducing activity exerted by the stroma. The addition of exogenous FGF2 allows also the differentiation of endothelial cells whereas, in presence of exogenous BMP4, ES cells differentiate exclusively into endothelium. A pivotal role in ES cells differentiation is played by the stromal PA6 cells.To analyze the early signals released by PA6 cells in the medium of the co-cultures in response to FGF2 and BMP4, monolayers of PA6 cells were treated with recombinant FGF2 or BMP4 for 3 hours and the gene expression analysis of treated PA6 cultures versus the untreated ones was performed.
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2010-08-01 | E-GEOD-21294 | biostudies-arrayexpress
Project description:NANOG has emerged as a central gatekeeper of pluripotency. Here we show that as human embryonic stem (ES) cells exit the pluripotent state, NANOG can play a key role in determining lineage outcome. It has previously been reported that BMPs can induce differentiation of human ES cells into extraembryonic lineages. Here we report that FGF2 switches BMP4 induced differentiation outcome to mesendoderm, characterized by the uniform expression of T (brachyury) and other primitive streak markers. Blocking the MEK-ERK pathway either by chemical inhibitors or by an ERK-specific phosphatase (DUSP6) blocks the FGF2-mediated lineage switch. Active MEK-ERK signaling prolongs NANOG expression during BMP-induced differentiation. Forced NANOG expression results in FGF independent BMP4 induction of mesendoderm, and knockdown of NANOG greatly reduces T induction. Together, our results demonstrate that FGF2 signaling switches the outcome of BMP4 induced differentiation of human ES cells by maintaining NANOG levels through the MEK-ERK pathway. There are three sets of expression data. Set 1 (14 samples) is 5day human ES cells (H1) differentiated with different concentrations of BMP4, in the presence or absence of FGF2. Set 2 (14 samples) is 50ng/mL of BMP4 induced H1 cells differentiation time course, with or without FGF2. Set 3 (22 samples) is 5ng/mL of BMP4 induced H1 cells differentiation time course, with or without FGF2.
2011-03-03 | E-GEOD-25973 | biostudies-arrayexpress