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Expression analysis of Nanog-like-MO1 injected zebrafish embryos at the sphere stage

ABSTRACT: Investigation of whole genome gene expression level changes in nanog-like knockdown embryos , compared to the control-MO injected embryos. Knockdown of nanog-like impaired early gastrulation. To globally analyze which target genes Nanog-like regulates during early embryogenesis, we performed a genome-wide transcription analysis using sphere stage (4 hpf) nanog-like morphants. A six chip study using total RNA recovered from three separate control-MO injected embryos and three separate nanog-like-MO1 injected embryos at the sphere stage

ORGANISM(S): Danio rerio

SUBMITTER: Cong Xu

PROVIDER: E-GEOD-34682 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Expression analysis of Nanog-like-MO1 injected zebrafish embryos at the sphere stage

Project description:Investigation of whole genome gene expression level changes in nanog-like knockdown embryos , compared to the control-MO injected embryos. Knockdown of nanog-like impaired early gastrulation. To globally analyze which target genes Nanog-like regulates during early embryogenesis, we performed a genome-wide transcription analysis using sphere stage (4 hpf) nanog-like morphants.

2011-12-28 | GSE34682 | GEO

Nanog-like Regulates Endoderm Formation through the Mxtx2-Nodal Pathway

Project description:This SuperSeries is composed of the following subset Series: GSE34682: Expression analysis of Nanog-like-MO1 injected zebrafish embryos at the sphere stage GSE34683: Genome-wide maps of binding sites of Nanog-like and Mxtx2 in blastula stage zebrafish embryos Refer to individual Series

2011-12-28 | E-GEOD-34684 | biostudies-arrayexpress

Danio rerio

Project description:Expression analysis of Nanog-like-MO1 injected zebrafish embryos at the sphere stage

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Project description:Experiment consisted of MO knockdown of emc1 in Xenopus and comparison of proteome in emc1 depleted stage 24 embryos vs MO control injected embryos.

2020-01-09 | PXD012770 | Pride

Transcriptional effects of glucocorticoid receptor alpha and beta signaling in zebrafish

Project description:The glucocorticoid receptor (GR) regulates gene expression upon activation by glucocorticoid (GC) hormones. In zebrafish, two GR splice variants exist: the canonical GR M-NM-1-isoform (GRM-NM-1), and the GR M-NM-2-isoform (GRM-NM-2). The exact function of GRb remains elusive. We have investigated the transcriptional role of GRa and GRb in the zebrafish embryo model by injecting mebryos with two splice-blocking morpholinos (one leading to knockdown of both GR M-NM-1- and M-NM-2-isoforms, and another targeting the alternative splicing of the GR pre-mRNA in favor of the GR M-NM-2-isoform) and with GRM-NM-2 mRNA (resulting in specific GRM-NM-2 overexpression). Transcriptome profiling was performed on total RNA isolated from 30 hpf embryos. Our results show that GRb does not act as a dominant-negative inhibitor of GRa, and that GRa regulates two distinct gene clusters, which are mainly involved in the metabolism of the embryo. This microarray study was designed to determine the effect of knockdown and overexpression of GRa and GRb. For this purpose, wild type (AB/TL) zebrafish embryos were injected at the 1-2 cell stage with a standard control morpholino (SC-MO), a splice-blocking morpholino leading to knockdown of both GR M-NM-1- and M-NM-2-isoforms (MO1), a splice-blocking morpholino targeting the alternative splicing of the GR pre-mRNA in favor of the GR M-NM-2-isoform (MO2), or GRb mRNA. At 24 hpf, each group was treated with dexamathasone (or vehicle) for 6 hr. This resulted in 8 treament groups: SC-MO/veh, SC-MO/dex, MO1/veh, MO1/dex, MO2/veh, MO2/dex, GRb mRNA/veh, GRb mRNA/dex. After the incubation period, embryos were collected and RNA was isolated from 20 embryos per treatment group (30 hpf). Three individual experiments were performed, and the resulting triplicate samples were analyzed by microarray, using a common reference approach.

2014-11-18 | E-GEOD-63360 | biostudies-arrayexpress

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Project description:SMN MO, Gemin2 MO knockdown vs Control MO injected

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Zebrafish embryos: Control MO vs. Lin28A MO vs. Lin28B MO injected

Project description:miRNA profiling of zebrafish embryos comparing control MO with Lin28A MO or Lin28B MO injected embryos at 5hpf

2013-11-19 | GSE52492 | GEO

Danio rerio

Project description:Zebrafish embryos: Control MO vs. Lin28A MO vs. Lin28B MO injected

| PRJNA229134 | ENA

Molecular characterization of the apical organ in the anthozoan Nematostella vectensis

Project description:The aim of the experiment was the identification of genes that are expressed in the apical organ of the sea anemone Nematostella vectensis. To achieve this, animals were generated that either lack the apical organ (injected with a morpholino antisense oligonucleotide to block the function of NvFGFa1) or have an expanded apical organ (injected with a morpholino antisense oligonucleotide to block the function of NvFGFa2, see Rentzsch et al., Development, 2008). Eggs from the same batch were injected after fertilization, (MO NvFGFa1 at 0.5uM, MO NvFGFa2 at 0.25uM) and planula larvae with the expected phenotype and without general developmental abnormalities were selected after 72 hours of development at room temperature (22°C), and placed in RNAlater Solution (Ambion) for subsequent extraction of RNA. Three conditions were isolated: embryos injected with NvFGFa1 MO, embryos injected with NvFGFa2 MO and non-injected embryos. Total RNA was extracted with the RNAqueous kit (Ambion), following the manufacturer’s protocol, and temporarily stored at -80°C, in order to accumulate the quantity necessary for the hybridization. The isolated total RNA for each condition was pooled and split into to two tubes and shipped on dry ice to Nimblegen in Iceland. The injections and the isolation of total RNA were performed from May – August 2009 at the Sars Centre in Bergen, Norway.

2014-10-19 | E-MTAB-3004 | biostudies-arrayexpress

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