DNA methylation comparison of ntTS, TS and ES cells
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE17104 | GEO | 2009/07/17
SECONDARY ACCESSION(S): PRJNA123451
REPOSITORIES: GEO
Similar Datasets
Project description:Placental abnormalities occur frequently in cloned animals. To investigate DNA methylation profile of trophoblast cell lineage of somatic cell nuclear transferred (NT) embryos, we established TS cells from blastocysts produced by NT at the blastocyst stage. Three independent TS cell lines derived from NT embryos rom BDF1 background were used in this study. Two control lines, derived from native blastocysts of BDF1 background, were also used.
2010-05-16 | E-GEOD-17104 | biostudies-arrayexpress
Project description:Placental abnormalities occur frequently in cloned animals. To investigate gene expression profile of trophoblast cell lineage of somatic cell nuclear transferred (NT) embryos, we established TS cells from blastocysts produced by NT at the blastocyst stage.
2009-07-17 | GSE17102 | GEO
Project description:Placental abnormalities occur frequently in cloned animals. To investigate gene expression profile of trophoblast cell lineage of somatic cell nuclear transferred (NT) embryos, we established TS cells from blastocysts produced by NT at the blastocyst stage. Experiment Overall Design: Five independent TS cell lines derived from NT embryos were used in this study. Those included three lines from BDF1 background NT embryos and two lines from EGFP-Tg CD-1 background NT embryos. Two each of control lines, derived from native blastocysts of each background, were also used.
2009-08-07 | E-GEOD-17102 | biostudies-arrayexpress
Project description:The study of genomic imprinting in mammals started with analysis of parthenogenetic embryos. At the phenotypic level, embryos with two maternal genomes and no paternal genome proceed through early development unimpaired, and only begin to fail after implantation. The most recognizable early defect is reduced or non-existent trophoblast, the tissue that gives rise to the placenta. We applied the procedure for establishing Trophoblast Stem cells (TS cells) developed in the Rossant lab to parthenogenetic embryos, and were successful in making four different TS cell lines, three from MI oocyte derived blastocysts and one from MII derived blastocysts. Initial molecular characterization, including microarray analysis, indicates that these cells are indistinguishable from fertilized TS cells, with the single exception of null expression of the paternally expressed gene Snrpn. The only significant difference between parthenogenetic and fertilized TS cells was the frequency with which they could be derived. In our hands, fertilized blastocyst outgrowths produced TS cells at robust rates (10-12 colonies per blastocyst), while parthenogenetic blastocyst outgrowths produced only 4 colonies in 50 outgrowths, 100 times less frequently than fertilized embryos. This led us to hypothesize that those few TS cells that arose in parthenogenetic outgrowths were probably a result of very low frequency stochastic variation in the imprint status of a gene or genes required for either establishment or maintenance of stem cells, or both. The corollary to this hypothesis posits that the early failure of parthenogenetic embryos, and in particular parthenogenetic trophoblast, is a function of impaired stem cell function. This raises the intriguing possibility that microarray comparisons of parthenogenetic, fertilized and androgenetic blastocysts may reveal the identities of genes important for stem cell biology. To this end, my colleague Keith Latham, at the Fels Institute, Temple University, Philadelphia, made amplified cDNAs from pools of ten each of androgenetic, gynogenetic, or fertilized blastocysts. Three separate pools for each type of embryo were prepared for microarray analysis. The embryos were all produced by nuclear transfers between zygotes, a difficult technique that is Keith's special expertise. He used the Brady/Iscove protocol to generate quantitative 3' end biased cDNAs. We would like to compare the transcriptomes of these embryos using the MOE430 2.0 arrays. We expect that important insights into the biology of uniparental embryos in general, and stem cells in particular may be revealed. Experiment Overall Design: this experiment include 3 samples and 18 replicates
2008-06-16 | E-GEOD-8163 | biostudies-arrayexpress
Project description:Although Tead4 is well-known to be critical for blastocyst development and trophoblast lineage differentiation, the higher-order chromatin organization around this gene remains poorly understood. We assayed long-range chromosomal interactions on the Tead4 promoter in mouse embryonic stem (ES) cells and trophoblast stem (TS) cells using the circular chromosome conformation capture (4C)-seq technique. We observed frequent overlaps of genomic regions interacting with the Tead4 promoter and open chromatin regions identified by FAIRE-seq in TS cells. By systematic reporter assays using ES and TS cells, we identified five genomic fragments possessing a TS-specific enhancer activity to the Tead4 promoter, consisting of two intra- and three inter-chromosomal loci relative to the Tead4 gene on chromosome 6. We established five mouse lines deleted with one of the five enhancer elements using CRISPR/Cas9 genome editing, and evaluated the effect of each of the enhancer deletions on the Tead4 gene expression at the blastocyst stage. We observed 35-50% decrease of the Tead4 expression in the blastocysts with heterozygous or homozygous deletion of an inter-chromosomally located enhancer on chromosome 19 compared to that in wild-type blastocysts, whereas the other four deletions did not affect the Tead4 expression level. Our results demonstrate that inter-chromosomal enhancer-promoter interaction bears a critical role in assuring the appropriate level of Tead4 gene expression at the trophoblast lineage specification.
2019-10-22 | GSE109249 | GEO
Project description:Although Tead4 is well-known to be critical for blastocyst development and trophoblast lineage differentiation, the higher-order chromatin organization around this gene remains poorly understood. We assayed long-range chromosomal interactions on the Tead4 promoter in mouse embryonic stem (ES) cells and trophoblast stem (TS) cells using the circular chromosome conformation capture (4C)-seq technique. We observed frequent overlaps of genomic regions interacting with the Tead4 promoter and open chromatin regions identified by FAIRE-seq in TS cells. By systematic reporter assays using ES and TS cells, we identified five genomic fragments possessing a TS-specific enhancer activity to the Tead4 promoter, consisting of two intra- and three inter-chromosomal loci relative to the Tead4 gene on chromosome 6. We established five mouse lines deleted with one of the five enhancer elements using CRISPR/Cas9 genome editing, and evaluated the effect of each of the enhancer deletions on the Tead4 gene expression at the blastocyst stage. We observed 35-50% decrease of the Tead4 expression in the blastocysts with heterozygous or homozygous deletion of an inter-chromosomally located enhancer on chromosome 19 compared to that in wild-type blastocysts, whereas the other four deletions did not affect the Tead4 expression level. Our results demonstrate that inter-chromosomal enhancer-promoter interaction bears a critical role in assuring the appropriate level of Tead4 gene expression at the trophoblast lineage specification.
2019-10-22 | GSE134991 | GEO
Project description:Although Tead4 is well-known to be critical for blastocyst development and trophoblast lineage differentiation, the higher-order chromatin organization around this gene remains poorly understood. We assayed long-range chromosomal interactions on the Tead4 promoter in mouse embryonic stem (ES) cells and trophoblast stem (TS) cells using the circular chromosome conformation capture (4C)-seq technique. We observed frequent overlaps of genomic regions interacting with the Tead4 promoter and open chromatin regions identified by FAIRE-seq in TS cells. By systematic reporter assays using ES and TS cells, we identified five genomic fragments possessing a TS-specific enhancer activity to the Tead4 promoter, consisting of two intra- and three inter-chromosomal loci relative to the Tead4 gene on chromosome 6. We established five mouse lines deleted with one of the five enhancer elements using CRISPR/Cas9 genome editing, and evaluated the effect of each of the enhancer deletions on the Tead4 gene expression at the blastocyst stage. We observed 35-50% decrease of the Tead4 expression in the blastocysts with heterozygous or homozygous deletion of an inter-chromosomally located enhancer on chromosome 19 compared to that in wild-type blastocysts, whereas the other four deletions did not affect the Tead4 expression level. Our results demonstrate that inter-chromosomal enhancer-promoter interaction bears a critical role in assuring the appropriate level of Tead4 gene expression at the trophoblast lineage specification.
2019-10-22 | GSE109251 | GEO
Project description:Although Tead4 is well-known to be critical for blastocyst development and trophoblast lineage differentiation, the higher-order chromatin organization around this gene remains poorly understood. We assayed long-range chromosomal interactions on the Tead4 promoter in mouse embryonic stem (ES) cells and trophoblast stem (TS) cells using the circular chromosome conformation capture (4C)-seq technique. We observed frequent overlaps of genomic regions interacting with the Tead4 promoter and open chromatin regions identified by FAIRE-seq in TS cells. By systematic reporter assays using ES and TS cells, we identified five genomic fragments possessing a TS-specific enhancer activity to the Tead4 promoter, consisting of two intra- and three inter-chromosomal loci relative to the Tead4 gene on chromosome 6. We established five mouse lines deleted with one of the five enhancer elements using CRISPR/Cas9 genome editing, and evaluated the effect of each of the enhancer deletions on the Tead4 gene expression at the blastocyst stage. We observed 35-50% decrease of the Tead4 expression in the blastocysts with heterozygous or homozygous deletion of an inter-chromosomally located enhancer on chromosome 19 compared to that in wild-type blastocysts, whereas the other four deletions did not affect the Tead4 expression level. Our results demonstrate that inter-chromosomal enhancer-promoter interaction bears a critical role in assuring the appropriate level of Tead4 gene expression at the trophoblast lineage specification.
2019-10-22 | GSE109250 | GEO
Project description:TET-family enzymes convert 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC) in DNA. Tet1 and Tet2 are Oct4-regulated enzymes that together sustain 5hmC in mouse embryonic stem (ES) cells. ES cells depleted of Tet1 by RNAi show diminished expression of the Nodal antagonist Lefty1, and display hyperactive Nodal signalling and skewed differentiation into the endoderm-mesoderm lineage in embryoid bodies in vitro. In Fgf4- and heparin-supplemented culture conditions that favor derivation of trophoblast stem (TS) cells, Tet1-depleted ES cells activate the trophoblast stem cell lineage determinant Elf5 and can colonize the placenta in mid-gestation embryo chimeras. Consistent with these findings, Tet1-depleted ES cells form aggressive hemorrhagic teratomas with increased endoderm, reduced neuroectoderm and ectopic appearance of trophoblastic giant cells. Thus Tet1 functions to regulate the lineage differentiation potential of ES cells. Here, we performed whole-genome transcriptome profiling of ES cells stably depleted of Tet1 by shRNA knockdown (Tet1-kd) cultured in either standard ES cell or in TS cell culture conditions. Gene expression changes in Tet1-kd ES cells were fairly modest compared to control (GFP-kd) cells, although gene ontology (GO) analysis of differentially expressed genes yielded many terms related to embryonic development and cell cycle regulation. In TS cell culture conditions, a core set of genes defining trophectodermal cell differentiation, including Cdx2, Eomes and Tead4, was enriched in Tet1-kd compared to GFP-kd cells. A total of 27 samples were analysed with at least 3 replicates in each group. Control/reference samples comprise ES cells cultured in standard ES cell media (true ES cells) and TS cells cultured in Fgf4/heparin-supplemented (TS) media (true TS cells). We compared Tet1-kd ES cells with GFP-kd ES cells cultured in either ES or TS cell media. In addition, we included a set of Tet1-kd subclones (Tet1-kd-sc) cultured in TS cell condition and a set of untransfected ES cells (parental control) cultured in TS cell condition.
2011-02-07 | E-GEOD-26900 | biostudies-arrayexpress
Project description:Trophoblast stem cells (TSCs) are derived from the trophoectoderm of blastocysts and maintain ability to self-renewal and differentiation. TSC is a good model to research placenta development in vitro. It will contribute to understanding and improving cloned placentomegaly to compare the transcription and methylation between cloned and natural fertilized embryos throughout TSC derivation process. In the present study, we used SCNT (NT) and SCNT with HDACi treatment (SNT) as cloned groups and natural fertilized (NF) embryos to derive TSCs and chosed 5-time points to peform RNA-seq and RRBS. We found only NT got a barriar in TSC maintenace and both cloned groups exhited abnormal accumulating DNA methylation and it might be resiponsible for some malformations of cloned placentas.
2021-03-01 | GSE163380 | GEO