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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcriptomic analysis of zebrafish during development and homeostasis

ABSTRACT: Sequencing libraries were generated from total RNA samples following the mRNAseq protocol for the generation of single end (16-36 hpf, 5 day larvae, adult head and adult tail) or paired end (24 hpf) libraries (Illumina). Single end reads of 36 nucleotides and paired end reads (2 x 76 nucleotides) were obtained with a GAIIx (Illumina). Gene expression at the different stages/tissu was assessed by cufflinks and HTseq. RNAseq on 5 differents samples: 24hpf embryos, pool of 16 hour to 36 hour embryos, 5 days old larvea, adult head and adult tail

ORGANISM(S): Danio rerio

SUBMITTER: olivier armant

PROVIDER: E-GEOD-39703 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Transcriptomic analysis of zebrafish during development and homeostasis

Project description:Sequencing libraries were generated from total RNA samples following the mRNAseq protocol for the generation of single end (16-36 hpf, 5 day larvae, adult head and adult tail) or paired end (24 hpf) libraries (Illumina). Single end reads of 36 nucleotides and paired end reads (2 x 76 nucleotides) were obtained with a GAIIx (Illumina). Gene expression at the different stages/tissu was assessed by cufflinks and HTseq.

2013-07-27 | GSE39703 | GEO

De Novo Purine Synthesis Mediates Circadian Control of Cell Cycle in Zebrafish (HTS)

Project description:Inosine 5'-phosphate dehydrogenase (impdh) has been well known as a key enzyme in GTP biosynthesis pathway. We found that three isoforms of impdh in zebrafish, namely impdh1a, impdh1b and impdh2, all show robust circadian expression.To examine the molecular functions of three impdh isoforms in zebrafish on the genome scale, we measured the global expression changes of impdh1a, impdh1b and impdh2 morpholino injected larvae (morphants) respectively using RNA-seq. Wild type (WT), control and three impdh morphants were collected at 32 hpf. In our RNA-seq result, we identified 468, 331 and 1166 significant genes affected by impdh1a, impdh1b and impdh2 morpholino (MO) knock-down respectively. Among them, there are limited overlaps between genes affected by different MOs and only 36 genes in common among all three MOs. This indicates that the three impdh isoforms have distinct molecular functions. To knock down the target genes, three impdh MOs and control MO were pressure-injected into 1- to 2-cell stage embryos. WT, control and three impdh morphants were raised at 28Â°C under 14h: 10h light/dark cycle from birth and sampled simultaneously at 32 hpf. Each group has at least 40 embryos.

2013-10-01 | E-GEOD-51278 | biostudies-arrayexpress

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Project description:RNA-seq was performed to reveal the RNA expression profile at two different stages (shield and tail-bud stage) in the embryogenesis of zebrafish (wild type strain AB). Zebrafish embryos were collected at the shield stage and tail-bud stage, which correspond to 6 hours post fertilization (hpf) and 10 hpf, respectively. Total RNA was extracted with miRNeasy Mini Kit, libraries for sequencing were prepared with TruSeq stranded mRNA library prep kit (Illumina), and paired-end sequencing was performed using NovaSeq 6000 (Illumina).

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Systematic identification of long noncoding RNAs during three key organogenesis stages in zebrafish

Project description:Thousands of lncRNAs have been found in zebrafish embryogenesis and adult tissues, but their identification and organogenesis-related function have not elucidated. In this study, high-throughput sequencing was performed at three different organogenesis stages of zebrafish embryos, which were important for zebrafish muscle development. The three stages were 10 hpf (hours post fertilization) (T1), 24 hpf (T2) and 36 hpf (T3).

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Whole transcriptomic sequencing of zebrafish rx3 mutants during optic vesicle morphogenesis

Project description:To identify genes regulated by Rx3 during optic vesicle morphogenesis, adult zebrafish carriers of a null rx3 mutation were mated. Before 13 hours post fertilization (hpf), the earliest time point at which optic vesicle evagination phenotypes could be reliably detected, offspring were phenotypically separated into pools comprising of mutants with an absence of optic vesicles or siblings exhibiting a wild-type phenotype. Three replicates of pooled RNA samples from 13 hpf eyeless mutants (rx3-/-) or phenotypically wild-type siblings (rx3+/+ or rx3+/-), and one replicate of 13 hpf wild-type zebrafish larva were collected for whole transcriptome sequencing. Whole transcriptome sequencing (RNA-seq) was performed on zebrafish rx3-/- mutants, wild-type siblings and wild-type AB strains at 13 hpf

2014-09-30 | E-GEOD-52652 | biostudies-arrayexpress

Zebrafish whole embryos at 36 hpf treated with DMSO or 5uM 11,12-EET

Project description:In our previous study, we found zebrafish embryos treated with 5uM 11,12-EET (epoxyeicosatrienoic acid) had increased stem cell marker, runx1, expression in the AGM. EET also induced ectopic runx1 expression in the tail. To systematically study how EET regulates gene expression, we performed microarray analysis on EET-treated embryos. Zebrafish whole embryos were synchronized at fertilization. Embryos were grown at 28 degree overnight. 25 embryos per group were treated with DMSO or 5uM 11,12-EET starting from 24 hpf (hour post fertilization) until 36 hpf at 28 degree. The triplicates were from three different clutches of embryos, and split into DMSO v.s. EET for each clutch.

2012-07-28 | GSE39707 | GEO

Zebrafish whole embryos at 36 hpf treated with DMSO or 5uM 11,12-EET

2012-07-27 | E-GEOD-39707 | biostudies-arrayexpress

Expression data from young and old zebrafish brain.

Project description:Brains are sexually dimorphic in adult zebrafish. We dissected brains from young and old, adult zebrafish, from both males and females. Brains are not pooled but analyzed as indivual samples. Four groups of wild-type zebrafish (AB strain) were used for this study: young (7.5-8.5 months old) male and female and old (31-36 months old) male and female. There were three animals per group for a total of 12 animals in the study.

2014-02-19 | E-GEOD-53430 | biostudies-arrayexpress

Identification of genes differentially expressed in MZeomesa embryos compared with wild-type

Project description:Study of Smad2 and Eomesa genomic binding in zebrafish blastulas, their relationship to eachother and the relaptionship between genomic binding and Ndr1 and Eomesa responsive genes as identified by microarray and RNA-seq. Replicate RNA samples from wild-type and MZeomesa sphere stage embryos

2014-10-15 | E-GEOD-51893 | biostudies-arrayexpress

Developmental enhancers revealed by extensive DNA methylome maps of zebrafish early embryos (MeDIP-seq)

Project description:DNA methylation undergoes dynamic changes during development and cell differentiation. Recent genome-wide studies discovered that tissue-specific differentially methylated regions (DMRs) often overlap tissue-specific distal cis-regulatory elements. However, developmental DNA methylation dynamics of the majority of the genomic CpGs outside gene promoters and CpG islands has not been extensively characterized. Here we generate and compare comprehensive DNA methylome maps of zebrafish developing embryos. From these maps, we identify thousands of developmental stage-specific DMRs (dsDMRs) across zebrafish developmental stages. The dsDMRs contain evolutionarily conserved sequences, are associated with developmental genes and are marked with active enhancer histone posttranslational modifications. Their methylation pattern correlates much stronger than promoter methylation with expression of putative target genes. When tested in vivo using a transgenic zebrafish assay, 20 out of 20 selected candidate dsDMRs exhibit functional enhancer activities. Our data suggest that developmental enhancers are a major target of DNA methylation changes during embryogenesis. MeDIP profiles of sperm and 2.5-hpf, 3.5-hpf, 4.5-hpf, 6-hpf and 24-hpf embryos were generated using Illumina HiSeq sequencing.

2015-02-13 | E-GEOD-52703 | biostudies-arrayexpress

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