Unknown,Transcriptomics,Genomics,Proteomics

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Knockdown of slc2a10/glut10 in zebrafish embryos vs. controls

ABSTRACT: 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 Two-condition experiment, slc2a10 MO (7.5ng) treatment vs control MO (5ng) treatment. Biological replicates: 3 slc2a10 MO replicates, compared to a pooled sample of 3 control MO replicates with dye swap.

ORGANISM(S): Danio rerio

SUBMITTER: Seth Crosby

PROVIDER: E-GEOD-34508 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:We identified a novel paralog of the antioxidant response element transcription factor, Nrf2 in zebrafish. To determine whether the paralogs Nrf2a and Nrf2b regulate different sets of genes, we performed loss-of-function experiments followed by microarray-based gene expression profiling, performed on embryos in which expression of Nrf2a, Nrf2b, or both paralogs was knocked down. Embryos at the 1-4 cell stage were injected with 3-5 nl of a control morpholino (MO) or gene-specific MO to knockdown Nrf2a, Nrf2b, or a Nrf2a+b combination. At 48 hpf, triplicate groups of 5 embryos were exposed to 2 M-BM-5M of tert butyl hydroquinone or 2% DSMO for 4 hours. At 52 hpf, embryos were fixed in RNA Later and stored at -80M-BM-0C. RNA was extracted, bioanalyzed, labeled with Cy3 and hybridized to the Agilent V3 4x44K zebrafish microarray (cat. #G2519F-026437) at the Genome Technology Core of the Whitehead Institute (Cambridge, MA). Raw array data obtained from the Whitehead Institute were extracted using Agilent's feature extraction software using background detrending (spatial and multiplicative).Prior to normalization, Cy3 values below 5 were set to 5. The data were then normalized using the non-linear scaling method based on rank invariant probes. After normalization but before statistical analyses, probes not significantly above background in all microarrays were removed (3147 probes in all; based on AgilentM-bM-^@M-^Ys 2.6 standard deviation method). None of the probes were saturated for Cy3 signal on any microarray, so no further filtering was applied. There were a total of 40,456 probes for statistical analyses. Statistical tests were performed using MeV v4. Data were log transformed and median centered for each probe. An ANOVA was run for morpholino injection, with p-value based on 1000 permutations of the data and alpha of 0.01. The probes found significant in the ANOVA were subsequently examined using Rank Product (RP) analysis to identify probes up- and down-regulated by the MO injection For each RP test, a two-class unpaired RP analysis was performed using 100 permutations of the data with a false discovery rate (FDR) M-bM-^IM-$10%.

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Knockdown of slc2a10/glut10 in zebrafish embryos vs. controls

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