Project description:Homogenous staining regions (hsr) are cytogenetic representations of a gene amplification. They are found exclusively in tumour cells. We found a hsr in the human embryonic stem cell (hESC) line H14, this is the first report of a hsr in hESCs. FISH and CGH studies showed that the hsr was derived from chromosome 17p11.2. The gene expression analysis studies were performed to identify the genes upregulated due to the hsr by comparison the the hsr-contianing H14 cells with a karyotypically normal parent H14 cell line. Experiment Overall Design: H14 HSR positive embryonic stem cells and H14 HSR negative cells were hybridised to Affymetrix U133 Plus 2.0 expression arrays. Replicates were also run using H14 positive and H14 negative cells from different passages.
Project description:Homogenous staining regions (hsr) are cytogenetic representations of a gene amplification. They are found exclusively in tumour cells. We found a hsr in the human embryonic stem cell (hESC) line H14, this is the first report of a hsr in hESCs. FISH and CGH studies showed that the hsr was derived from chromosome 17p11.2. The gene expression analysis studies were performed to identify the genes upregulated due to the hsr by comparison the the hsr-contianing H14 cells with a karyotypically normal parent H14 cell line. Keywords: karyotypically abnormal hESC vs karyotypically normal hESC.
Project description:Metabolism is vital to cellular function and tissue homeostasis during human lung development. In utero, embryonic pluripotent stem cells undergo endodermal differentiation towards a lung progenitor cell fate that can be mimicked in vitro using induced human pluripotent stem cells (hiPSCs) to study genetic mutations. To identify differences between wild type and surfactant protein B (SFTPB)-deficient cell lines during endoderm specification towards lung, we used an untargeted metabolomics approach to evaluate the developmental changes in metabolites. We found that the metabolites most enriched during the differentiation from pluripotent stem cell to lung progenitor cell, regardless of cell line, were sphingomyelins and phosphatidylcholines, two important lipid classes in fetal lung development. The SFTPB mutation had no metabolic impact on early endodermal lung development. The identified metabolite signatures during lung progenitor cell differentiation may be utilized as biomarkers for normal embryonic lung development.
Project description:In order to investigate the characteristics and mechanisms of embryonic stem cell derived exosomes attenuates transverse aortic constriction induced ventricular remodeling, the proteomic profiles of human embryonic stem cell derived exosomes were analysed by label-free quantification.
Project description:The aim of this project is to differentiate human embryonic stem cells to an extra-embryonic fate, specifically the hypoblast. This is of uttermost importance given the current lack of human hypoblast stem cells.
We hypothesized that the pluripotent characteristics of the starting human embryonic stem cell population may dictate the competency for extra-embryonic cell fate specification. Based on this hypothesis and using human embryonic stem cells maintained in different naïve-like culture regimes, we have now developed conditions that allow the differentiation of human embryonic stem cells to a stable GATA6+ SOX2- population. This suggests that these cells may be putative human hypoblast stem cells. To validate this finding here we propose to perform RNA sequencing experiments of the differentiated human embryonic stem cells. By comparing their RNA expression profile to the single cell sequencing data of the human embryo that we are currently generating, we will be able to determine the identity of our GATA6+ SOX2- cells, and establish whether they represent the in vivo human hypoblast.
Project description:The aim of this project is to differentiate human embryonic stem cells to an extra-embryonic fate, specifically the hypoblast. This is of uttermost importance given the current lack of human hypoblast stem cells.
We hypothesized that the pluripotent characteristics of the starting human embryonic stem cell population may dictate the competency for extra-embryonic cell fate specification. Based on this hypothesis and using human embryonic stem cells maintained in different naïve-like culture regimes, we have now developed conditions that allow the differentiation of human embryonic stem cells to a stable GATA6+ SOX2- population. This suggests that these cells may be putative human hypoblast stem cells. To validate this finding here we propose to perform RNA sequencing experiments of the differentiated human embryonic stem cells. By comparing their RNA expression profile to the single cell sequencing data of the human embryo that we are currently generating, we will be able to determine the identity of our GATA6+ SOX2- cells, and establish whether they represent the in vivo human hypoblast.
This dataset contains all the data available for this study on 2020-04-20.
