Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Global gene expression profiles in Oct4-knockdown and Ccna2-knockdown mouse embryos.

ABSTRACT: Gene regulation at the maternal-embryonic transition in the pre-implantation mouse embryo is not well understood. We knock down Ccna2 to establish proof-of-concept that antisense morpholino oligonucleotides can be used to target specific genes. We applied this strategy to study Oct4 and discovered that Oct4 is required prior to blastocyst development. Specifically, gene expression is altered as early as the 2-cell stage in Oct4-knockdown embryos. Distinct subsets of genes are differentially expressed between Oct4 and Ccna2-knockdown embryos, and indicated differential functions. Further, a large panel of genes were confirmed to be differentially-expressed in Oct4-knockdown embryos by quantitative, real time RT-PCR. Keywords: gene knockdown

ORGANISM(S): Mus musculus

PROVIDER: GSE13981 | GEO | 2008/12/31

SECONDARY ACCESSION(S): PRJNA110239

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Global gene expression profiles in Oct4-knockdown and Ccna2-knockdown mouse embryos.

Project description:Gene regulation at the maternal-embryonic transition in the pre-implantation mouse embryo is not well understood. We knock down Ccna2 to establish proof-of-concept that antisense morpholino oligonucleotides can be used to target specific genes. We applied this strategy to study Oct4 and discovered that Oct4 is required prior to blastocyst development. Specifically, gene expression is altered as early as the 2-cell stage in Oct4-knockdown embryos. Distinct subsets of genes are differentially expressed between Oct4 and Ccna2-knockdown embryos, and indicated differential functions. Further, a large panel of genes were confirmed to be differentially-expressed in Oct4-knockdown embryos by quantitative, real time RT-PCR. Keywords: gene knockdown 3-5 week old wild type F1 (C57BL6xDBA/2) females (Charles River) were superovulated by intraperitonial injections of 5 IU of pregnant mare’s serum gonadotropin (Sigma) followed by 5 IU of human chorionic gonadotropin (Sigma) 48 hours later, and mated overnight with wild type males. Mice were sacrificed by cervical dislocation 17 hours after hCG injection, and 1-cell embryos were released from oviducts. Cumulus cells were removed by hyaluronidase (Sigma) treatment and pipetting. Pre-implantation embryos at the two pronuclei stage were recovered, pooled from 3-6 females in M2 media (Chemicon International), followed by immediate cytoplasmic microinjection of gene-specific antisense morpholino oligonucleotides and culture in Human Tubal Fluid with 10% serum supplement (In-Vitro Fertilization, Inc.) microdrops under mineral oil (Sigma) in mixed gas (90% nitrogen, 5% oxygen, 5% carbon dioxide; Praxair) at 37°C, and cultured at ten embryos per 20 μL drop. Uninjected control embryos derived from the same embryo pool, and were placed in identical conditions in parallel, except that they were not injected.

2008-12-30 | E-GEOD-13981 | biostudies-arrayexpress

RNA-seq expression profiling of Xenopus tropicalis blastula embryos upon Tet2 and Tet3 knockdown

Project description:To analyze the role of Tet proteins on global gene expression, we profiled the transcriptome of Xenopus tropicalis blastula embryos upon knockdown of Tet2 and Tet3 using Morpholino antisense oligonucleotides.

2024-08-29 | GSE226466 | GEO

Zebrafish transcriptomics in 24 and 36 hpf embryos after knockdown of glucocorticoid receptor translation

2013-08-28 | GSE50376 | GEO

Gene expression analysis of neural crest in zebrafish to identify novel downstream targets of Twist1

Project description:sox10:GFP transgenic embryos were used to FACS sort neural crest and microarray analysis was done to compare genes expressed differentially between GFP positive and negative and fold changes were compared to differentially expressed genes in embryos treated with morpholino oligonucleotides to knockdown function of Twist1

2011-09-23 | GSE32308 | GEO

Zebrafish transcriptomics in 24 and 36 hpf embryos after knockdown of glucocorticoid receptor translation

Project description:To further characterize the roles of cortisol signaling via the glucocorticoid receptor (GR) in developing zebrafish, we have used morpholino oligonucleotides to knockdown GR protein translation and measured gene expression in RNA extracted from 24 and 36 hours post fertilization (hpf) embryos. The GR morpholino was characterized previously in Nesan et al., 2012, Endocrinology 181, 35-44) Single-cell zebrafish embryos were microinjected with either active morpholino or mispair control. Embryos were frozen at 24 and 36 hpf and total RNA extracted for microarray analysis. Three independent replicates (different breeding events on separate days) were performed for each treatment per timepoint.

2013-08-28 | E-GEOD-50376 | biostudies-arrayexpress

Mus musculus

Project description:Global gene expression profiles in Oct4-knockdown and Ccna2-knockdown mouse embryos.

| PRJNA110239 | ENA

Knockdown of slc2a10/glut10 in zebrafish embryos vs. controls

Project description:A zebrafish model of arterial tortuosity syndrome (ATS) was generated by knocking down the slc2a10/glut10 gene using antisense morpholino oligonucleotides (MO). Control morpholino treated embryos were used as controls. The samples were collected for gene expression profiling at 48 hours post fertilization. Experimental details and analyzed data are available in Willaert et al. Human Molecular Genetics 2011; doi: 10.1093/hmg/ddr555

2011-12-17 | GSE34508 | GEO

Gene expression analysis of neural crest in zebrafish to identify novel downstream targets of Twist1

2011-09-22 | E-GEOD-32308 | biostudies-arrayexpress

OCT4 Knockdown in human embryonic stem cells

Project description:We studied the genomic locations of three key regulatory proteins (OCT4, NANOG and CTCF) in human and mouse embryonic stem (ES) cells [see Series GSE20650]. To identify the conserved and unique human OCT4 targets, we performed an OCT4 RNAi knock-down experiment. We find that species-specific transposable elements have profoundly altered the transcriptional circuitry of pluripotent stem cells. To identify the mRNA targets of OCT4: 12 samples were collected in total. Each sample is done in triplicate and samples were collected at 2 different time point, 2 days and 3 days after transfection. Luciferase knockdown serves as negative control and OCT4 knockdown is the experimental sample.

2010-04-13 | E-GEOD-21135 | biostudies-arrayexpress

Ablation of OCT4 function in cattle embryos by double electroporation of CRISPR-Cas for DNA and RNA targeting (CRISPR-DART)

Project description:CRISPR-Cas ribonucleoproteins are important tools for gene editing in pre-implantation embryos. However, the inefficient production of biallelic deletions in cattle zygotes has hindered mechanistic studies of gene function. In addition, the presence of maternal RNAs that support embryo development until embryonic genome activation may cause confounding phenotypes. Here, we aimed to improve the efficiency of biallelic deletions and deplete specific maternal RNAs in cattle zygotes by CRISPR-Cas. Two electroporation sessions with Cas9D10A ribonucleoproteins targeting exon1 and the promoter of OCT4 produced biallelic deletions in 91% of the embryos tested. In most cases, the deletions were longer than 1000 nucleotides long. Electroporation of Cas13a ribonucleoproteins prevents the production of the corresponding proteins. We electroporated Cas910A ribonucleoproteins targeting exon 1, including the promoter region, of OCT4 in two sessions with inclusion of Cas13a ribonucleoproteins targeting OCT4 mRNAs in the second session to ablate OCT4 function in cattle embryos. A lack of OCT4 resulted in embryos arresting development prior to blastocyst formation at a greater proportion (7.9%) than controls (30.7%, P<0.001). The few embryos that developed past the morula stage did not form a normal inner cell mass. Transcriptome analysis of single blastocysts, confirmed to lack exon 1 and promoter region of OCT4, revealed a significant (FDR<0.1) reduction in transcript abundance of many genes functionally connected to stemness, including markers of pluripotency (CADHD1, DPPA4, GNL3, RRM2). The results confirm that OCT4 is key regulator of genes that modulate pluripotency and is required to form a functional blastocyst in cattle.

2023-07-08 | GSE236474 | GEO

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