Transcriptomics

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Zebrafish larvae aryl hydrocarbon receptor ligands and inhibitor


ABSTRACT: Wild type zebrafish (AB strain, https://zfin.org/action/genotype/view/ZDB-GENO-960809-7) were set up for mating overnight, in 3:2 ratios, females and males, respectively. Fertilized embryos from wildtype zebrafish AB strain were used for all experiments and kept in Embryo medium (E3, 5 mM NaCl, 0.17 mM KCl, 0.33 mM CaCl2, 0.33 mM MgSO4) in an incubator at 28ºC. At 1dpf, larvae were manually dechorionated under a stereomicroscope. At 2dpf, zebrafish larvae were divided randomly into the different experimental groups, at a density of 12 larvae per well of a 12 well plate (Corning) in 1.5mL of E3. Three biological replicates of 12 larvae per condition were exposed to different conditions for 4 hours at 28 ºC: DMSO; DMSO + CH223191 (5mM); 3-o-C12-L-HSL (50mM); 3-o-C12-L-HSL (50mM) + CH223191 (5 mM ); 1-hydroxyphenazine (1-HP, 5mM); 1-HP (5mM) + CH223191(5mM) and 1-HP (5mM) + 3-o-C12-L-HSL (50mM).To mention, in experiments using the Aryl hydrocarbon Receptor inhibitor CH223191, larvae were pre-exposed to 5uM of the inhibitor for 2h prior to the start of the experiment and the inhibitor was kept during the experiment. After the desired exposure to diverse ligands, larvae were euthanized with Tricaine (MS-222, 300 µg/mL) and placed in Trizol for RNA isolation. The same experimental layout was performed 5 times, and samples were subjected to microarray hybridization and analysis.

ORGANISM(S): Danio rerio

PROVIDER: GSE121101 | GEO | 2019/10/01

REPOSITORIES: GEO

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