Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Pluripotency Genes Overexpressed in Primate Embryonic Stem Cells Are Localized on Homologues of Human 16, 17, 19 and X

ABSTRACT: While human embryonic stem cells (hESCs) are predisposed towards chromosomal aneploidities on 12, 17, 20 and X, rendering them susceptible to transformation, the specific genes expressed are not yet known. Here, by identifying the genes over expressed in pluripotent rhesus ESCs (nhpESCs) and comparing them to both their genetically-identical differentiated progeny (teratoma fibroblasts) as well as genetically-related differentiated parental cells (parental skin fibroblasts from whom gametes were used for ESC derivation), we find that some of those over expressed genes in nhpESCs cluster preferentially on rhesus chromosomes 16, 19, 20 and X, homologues of human chromosomes 17, 19, 16 and X respectively. Differentiated parental skin fibroblasts display gene expression profiles closer to nhpESC profiles than to teratoma cells, which are genetically identical to the pluripotent nhpESCs. Twenty over and under expressed pluripotency modulators, some implicated in neurogenesis, have been identified. The over expression of some of these genes discovered using pedigreed nhpESCs derived from prime embryos generated by fertile primates, which is impossible to perform with the anonymously donated clinically-discarded embryos from which hESCs are derived, independently confirms the importance of chromosome 17 and X regions in pluripotency and suggests specific candidates for targeting differentiation and transformation decisions.

ORGANISM(S): Macaca mulatta

PROVIDER: GSE18639 | GEO | 2009/10/21

SECONDARY ACCESSION(S): PRJNA121417

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Expression data from parthenogenetic and WT iPS samples and their parental fibroblasts

Project description:Three parthenogenetic induced pluripotent stem cell (PgHiPSCs) lines were generated from each of the ovarian teratoma cell lines (two distinct individuals). Two normal iPS cell lines were generated from normal fibroblasts. Three biological replicates of normal embryonic stem cells (H9, HESCs) were perfomed. We used microarrays to study the gene expression profiles of the PgHiPSCs, and compared the expression of genes to both embryonic and induced pluripotent stem cell, to identify paternally expressed genes that are down-regulated in the PgHiPSC lines.

2011-05-31 | GSE27362 | GEO

A human iPSC model of Hutchinson Gilford Progeria Syndrome reveals a possible mesenchymal stem cell defect

Project description:Hutchinson Gilford Progeria Syndrome (HGPS) is a rare, sporadic genetic disease caused by mutations in the nuclear lamin A gene. In most cases the mutation creates an efficient donor-splice site that generates an altered transcript encoding a truncated lamin A protein, progerin. In vitro studies have indicated that progerin can disrupt nuclear function. HGPS affects mainly mesenchymal lineages but the shortage of patient material has precluded a tissue-wide molecular survey of progerin’s cellular impact. We report here a new, induced pluripotent stem cell (iPSC)-based model for studying HGPS. HGPS dermal fibroblasts were reprogrammed into iPSC lines using a cocktail of the transcription factor genes, OCT4, SOX2, KLF4 and C-MYC. The iPSC cells were differentiated into neural progenitors (NPs), endothelial cells (ECs), fibroblast-like cells and mesenchymal stem cells (MSCs). Progerin levels in the different cell types followed the pattern MSC≥ fibroblast>EC>>NP. Functionally, we detected a major impact of progerin on MSC function. We show that HGPS-MSCs are vulnerable to the ischemic conditions found in a murine hind limb recovery model and an in vitro hypoxia assay, as well as showing enhanced sensitivity in a serum starvation assay. Since there is widespread consensus that MSCs reside in low oxygen niches in vivo, we propose that these conditions lead to an accelerated depletion of the MSC pool in HGPS patients with consequent accretion of mesenchymal tissue. Analysis of iPSCs, hESCs and parental fibroblasts at the gene expression level. The comparison analysis in the present study was expected to show the similarity between iPSCs, hESCs and parental fibroblasts. Results provide important information of the differences between iPSCs, hESCs and parental fibroblasts. Total RNA was obtained from different samples (iPSCs, hESCs, and fibroblasts) separately.

2010-12-23 | E-GEOD-26093 | biostudies-arrayexpress

Expression data from parthenogenetic and WT iPS samples and their parental fibroblasts

2011-05-31 | E-GEOD-27362 | biostudies-arrayexpress

The Effect of liver regeneration on hESCs transplanted into SCID mice

Project description:A source of functioning hepatocytes for liver cell transplantation and liver support is in need. hESCs , when transplanted, generally form teratomas. We studied capacity of hESCs to differentiate to hepatocyte like cells under the effect of in vivo liver regeneration. In SCID-Beige mice hepatocyte replication peaked 48 hours after CCl4 injection; 24 hours earlier 106 hESCs or EBs at different stages of differentiation were transplanted into the spleen. Comparisons were made to teratomas formed in the hind limb of untreated animals. RT-PCR and gene microarray were used for liver and human specific markers. Immunohistochemistry to AFP,AAT, ALB, HEP-PAR I AND CK-18,19 were performed. EBs formed a single large teratoma in the spleen and small teratomas in the liver. Expression of PCR- identified liver specific markers was greater in the spleen than in the liver. Adult hepatocyte specific markers were expressed in the hind limb teratoma excised after 7 weeks. When late EBs were transplanted before CCl4 exposure, no teratomas formed. Rather, an abundance of probably undifferentiated ectodermal origin cells presented. In this descriptive study, transplanted early human EBs formed teratomas that differed in size and molecular markers. Within teratomas, the degree of maturation into hepatocytes correlated better with the time duration in vivo than with growth stimulation. Late EBs formed non differentiated ectodermal cells only in a regenerative microenvironment. 4 samples were analyzed. Clean mouse liver used as neg. control. Mouse liver injected with CCl4 and transplanted with late Ebs, tumor was not observed. Two mouse livers injected with CCl4 and transplanted with late Ebs, tumor was observed.

2011-12-31 | E-GEOD-31136 | biostudies-arrayexpress

The Effect of liver regeneration on hESCs transplanted into SCID mice

2011-12-31 | GSE31136 | GEO

Transcriptional profiling of rhesus monkey nuclear transfer embryonic stem cells

Project description:Derivation of embryonic stem cells (ESC) genetically identical to a patient by somatic cell nuclear transfer (SCNT) holds the potential to cure or alleviate the symptoms of many degenerative diseases while circumventing any immunorejection issues. However, no primate nuclear transfer embryonic stem (ntES) cell lines have been derived to date. Here, we used a modified SCNT technique to produce rhesus macaque SCNT blastocysts at a relatively high efficiency from adult donor cells and we successfully derived two primate ntES cell lines from 304 oocytes (an overall efficiency of 0.7%). Nuclear and mitochondrial DNA analysis confirmed the ntES cell lines were derived from rhesus monkey SCNT blastocysts and both rhesus monkey ntES cell lines exhibited a normal ESC morphology, expressed key stemness markers, were transcriptionally indistinguishable from control ESC lines and differentiated into multiple cell types. This is, to our knowledge, the first confirmed derivation of primate ntES cell lines. Keywords: rhesus monkey somatic cell nuclear transfer embryonic stem cells

2007-08-29 | GSE7748 | GEO

Genetic variability exceeds cell-type memory and determines iPSCs differentiation potential-implications for biobanking

Project description:Summary To address the issue of retention of somatic cell memory in iPSCs we compared gene expressions of genetically matched human iPSCs derived from fibroblasts and blood. We were using the all-in-one type footprint free SeVdp-iPS system, for generation of uniform iPSC lines Our results show that iPSC lines derived from the same donor are highly similar to each other. Overal design Total RNA was extracted from fibroblasts derived iPSC (N=8) and blood derived iPSC (N=10) as well as parental fibroblasts and peripheral blood mononuclear cells (N=4 different donors: T14; T42; T53; T55). Total RNA was also extracted from spontaneously differentiated Embryonic bodies derived from fibroblasts derived iPSC (N=4) and blood derived iPSC (N=4) from four donors. RNA from control human embryonic stem cell lines (H9, and FES22) was used as control. Samples were run in two different batches (1 and 2).

2016-01-07 | E-MTAB-3825 | biostudies-arrayexpress

Mass spectrometry based-proteomic analysis comparing the abundance of RNA-binding proteins (RBPs) between TE03 (I3) human embryonic stem cells (hESCs) and human foreskin fibroblasts (HFFs)

Project description:Here, we used high-resolution mass spectrometry to identify differentially expressed RNA-binding proteins (RBPs) between TE03 (I3) human embryonic stem cells (hESCs) and human foreskin fibroblasts (HFFs). 2102Ep embryonal carcinoma (EC) cells were used as a reference for pluripotent cells. This data accompanies the manuscript: "Uncovering the RNA-binding protein landscape in the pluripotency network of human embryonic stem cells". Abstract: "Embryonic stem cell (ESC) self-renewal and cell-fate decisions are driven by a broad array of molecular signals. While transcriptional regulators have been extensively studied in human ESCs (hESCs), the extent to which RNA-binding proteins (RBPs) contribute to human pluripotency remains unclear. Here, we carry out a proteome-wide screen and identify 810 proteins that directly bind RNA in hESCs. We reveal that RBPs are preferentially expressed in hESCs and dynamically regulated during exit from pluripotency and early lineage specification. Moreover, we show that nearly 200 RBPs are affected by knockdown of OCT4, a master regulator of pluripotency, several dozen of which are directly bound by this factor. Intriguingly, over 20 percent of the proteins detected in our study are putative DNA- and RNA-binding proteins (DRBPs), among them key transcription factors (TFs). Using fluorescently labeled RNA and seCLIP (single-end enhanced crosslinking and immunoprecipitation) experiments, we discover that the pluripotency-associated STAT3 and OCT4 TFs interact with RNA in hESCs and confirm the direct binding of STAT3 to the conserved NORAD long-noncoding RNA. Taken together, our findings indicate that RBPs have a more widespread role in human pluripotency than previously appreciated, reinforcing the importance of post-transcriptional regulation in stem cell biology".

2023-05-05 | PXD025284 | Pride

Transcriptomic analysis of undifferentiated human embryonic stem cells (hESCs) and day-25 differentiated cortical neuronal progenitor cells from 5 isogenic hESC lines with low and high levels of alpha-synuclein expression

Project description:Purpose: To compare the cortical neuroonal differentiation capacity of clonal isogenic hESC lines with different levels of alpha-synuclein (aSyn) expression. Methods 1: Shef4 hESCs was used as a parental line to create an allelic series of clonal transgenic hESC lines expressing a human SNCA (encoding aSyn) contruct. Clonal transgenic lines with high (S8, S37) and low (S9, S34) aSyn expression were established and characterized. Methods 2: hESCs were cultured on Laminin-521 (BioLamina) in StemMACS iPS-Brew XF self-renewal media (Miltenyi) prior to lifting for isolation of total RNA. Methods 3: Cortical neuronal progenitor cells were differentiated from hESCs on Laminin-111 coated (Biolamina) 24-well plates at an initial plating density of 80,000 cells/cm2. Differentiation commenced in neural induction media (NIM) consisting of 50% DMEM/F12 (ThermoFisher Scientific), 50% Neurobasal Media (ThermoFisher Scientific), B27 supplement with Retinoic Acid (ThermoFisher Scientific), N2 supplement (ThermoFisher Scientific) and 2 mM L-Glutamine (ThermoFisher Scientific), 10μM SB431542 (Tocris) and 100 nM LDN-193189 (Miltenyl Biotec). From day 4 onwards, the base media was changed to 50% NIM, 25% DMEM/F12 and 25% Neurobasal Media. SB431542 (10 μM) and LDN-193189 (100 nM) were present for the first 12 days of differentiation. Cells were lifted and re-plated at day 12 and day 17 with Collagenase Type IV (Life Technologies). At day 25, differentiated cells were lifted for total RNA isolation.

2022-02-04 | GSE195877 | GEO

Mesenchymal progenitors from hESCs & profiling vs. BMMSCs

Project description:New potential sources of stem cells for clinical application include bone marrow mesenchymal stem cells (BMMSCs), human embryonic stem cells (hESCs), and induced pluripotent stem cells (iPS). However, each source is not without its own concerns. While research continues in an effort overcome these problems, the generation of mesenchymal progenitors from existing hESC lines may circumvent many of these issues. We report here a comparison of the transcriptome of hESC-derived mesenchymal progenitors (EMPs), its parental hESC line, and 2 donors of adult BMMSCs. A custom-designed oligo-microarray of just over 11,000 highly-expressed genes in stem cells was used to profile the transcriptome of BMMSCs, EMPs, and hESCs.

2012-01-01 | E-GEOD-18543 | biostudies-arrayexpress

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data