Time-dependent toxic effects of dietary TCDD in juvenile rainbow trout
Ontology highlight
ABSTRACT:
ORGANISM(S): Salmo salar Oncorhynchus tshawytscha Osmerus mordax Coregonus clupeaformis Oncorhynchus mykiss
PROVIDER: GSE45780 | GEO | 2013/04/05
SECONDARY ACCESSION(S): PRJNA196314
REPOSITORIES: GEO
Similar Datasets
Project description:We investigated the effects of chronic TCDD exposure on global gene expression in developing rainbow trout (Oncorhynchus mykiss). Juvenile rainbow trout (0.18±0.01g) were fed Biodiet starter with TCDD added at 0, 0.1, 1, 10 and 100ppb, and ten fish were sampled and pooled from each group for microarray experiments at 28 days after initiation of the exposure. Gene expression analysis was performed using the Genomics Research on All Salmonids Project (cGRASP) 16K cDNA microarrays. TCDD-responsive whole body transcripts identified in the microarray experiments have putative functions involved in various biological processes including cellular process, metabolic process, biological regulation, and response to stimulus. In addition, TCDD caused leisons in multiple organ systems in juvenile rainbow, including skin, oropharynx, liver, gas bladder, intestine, pancreas, nose and kidney.
2013-04-05 | GSE45779 | GEO
Project description:We investigated the effects of chronic TCDD exposure on global gene expression in developing rainbow trout (Oncorhynchus mykiss). Juvenile rainbow trout (0.18M-BM-10.01g) were fed Biodiet starter with TCDD added at 0, 0.1, 1, 10 and 100ppb, and ten fish were sampled and pooled from each group for microarray experiments at 28 days after initiation of the exposure. Gene expression analysis was performed using the Genomics Research on All Salmonids Project (cGRASP) 16K cDNA microarrays. TCDD-responsive whole body transcripts identified in the microarray experiments have putative functions involved in various biological processes including cellular process, metabolic process, biological regulation, and response to stimulus. In addition, TCDD caused leisons in multiple organ systems in juvenile rainbow, including skin, oropharynx, liver, gas bladder, intestine, pancreas, nose and kidney. Juvenile rainbow trout (0.18M-BM-10.01g) were fed Biodiet starter (Bio-Oregon) (4% body weight per day) with TCDD added at 0, 0.1, 1, 10 and 100 ppb. Fish were sampled after 28 days. Total RNA from individual fish was isolated using TRIzol reagent (Invitrogen). Total RNA of ten control trout were pooled as a common reference which were labeled with Cy3. Total RNA of ten fish of each treatment were labeled wih Cy5. cDNA were synthesized using SuperScript II Reverse Transcriptase (Invitrogen) (1 M-NM-<g pooled RNA per synthesis). Targets were labeled using the Array 900 Expression Array Detection kit (Genisphere) following the manufacture protocol. 1M-BM-5g RNA of pooled ten control fish were labled with Cy3 and 1M-BM-5g RNA of pooled ten TCDD-treated fish were labled with Cy5, then day-swap was performed. Two arrays were run for each comparison. Microarrays were scanned at 10 M-BM-5m resolution using a ScanArray Express (PerkinElmer Life Sciences, Inc, Boston, MA). The photomultiplier tube settings (PMT) for Cy3 and Cy5 were 70 and 65-66, respectively. TIFF images of arrays were generated with ScanArray Express software (PerkinElmer). Fluorescence intensity data for Cy3 and Cy5 channels were extracted from TIFF images using ImaGene 7.5 software (BioDiscovery Inc., El Segundo, CA). Background correction, data transformation (setting background corrected values < 0.01 to 0.01), Lowess normalization, and analysis (e.g. fold-change calculations) were performed using GeneSpring GX 7.3 (Agilent Technologies, Palo Alto, CA)
2013-04-05 | E-GEOD-45779 | biostudies-arrayexpress
Project description:We investigated the effects of chronic TCDD exposure on global gene expression in developing rainbow trout (Oncorhynchus mykiss). Juvenile rainbow trout(0.18M-BM-10.01g) were fed Biodiet starter with TCDD added at 0, 0.1, 1, 10 and 100ppb, and ten fish were sampled and pooled from 10 ppb group at 7, 14, 28 and 42 days for microarray experiments after initiation of the exposure. Gene expression analysis was performed using the Genomics Research on All Salmonids Project (cGRASP) 16K cDNA microarrays. TCDD-responsive whole body transcripts identified in the microarray experiments have putative functions involved in various biological processes including response to stimulus, cell wall organization or biogenesis, growth and cell proliferation. In addition, TCDD caused leisons in multiple organ systems in juvenile rainbow, including skin, oropharynx, liver, gas bladder, intestine, pancreas, nose and kidney. Juvenile rainbow trout (0.18M-BM-10.01g) were fed Biodiet starter (Bio-Oregon) (4% body weight per day) with TCDD added at 0, 0.1, 1, 10 and 100 ppb. Fish were sampled and from 10 ppb group at 7, 14, 28 and 42 days for microarray experiments after initiation of the exposure. Total RNA from individual fish was isolated using TRIzol reagent (Invitrogen).Total RNA of ten control trout were pooled as a common reference which were labeled with Cy3. Total RNA of ten fish of each treatment were labeled wih Cy5. cDNA were synthesized using SuperScript II Reverse Transcriptase (Invitrogen) (1 M-NM-<g pooled RNA per synthesis). Targets were labeled using the Array 900 Expression Array Detection kit (Genisphere) following the manufacture protocol. 1M-BM-5g RNA of pooled ten control fish were labled with Cy3 and 1M-BM-5g RNA of pooled ten TCDD-treated fish were labled with Cy5, then day-swap was performed. Two arrays were run for each comparison. Microarrays were scanned at 10 M-BM-5m resolution using a ScanArray Express (PerkinElmer Life Sciences, Inc, Boston, MA). The photomultiplier tube settings (PMT) for Cy3 and Cy5 were 70 and 65-66, respectively. TIFF images of arrays were generated with ScanArray Express software (PerkinElmer). Fluorescence intensity data for Cy3 and Cy5 channels were extracted from TIFF images using ImaGene 7.5 software (BioDiscovery Inc., El Segundo, CA). Background correction, data transformation (setting background corrected values < 0.01 to 0.01), Lowess normalization, and analysis (e.g. fold-change calculations) were performed using GeneSpring GX 7.3 (Agilent Technologies, Palo Alto, CA)
2013-04-05 | E-GEOD-45780 | biostudies-arrayexpress
Project description:Juvenile rainbow trout were fed Biodiet starter (4% body weight per day) with MeHg added at 0, 0.5, 5 and 50 ppm for six weeks. Atomic absorption spectrometry was applied to measure the level of MeHg in the whole fish body. Trout at six weeks were sampled from each group for gene expression analysis by cGRASP 16K cDNA microarrays. MeHg-exposed rainbow trout did not show overt signs of toxicity, nor were significant differences seen in mortality, length, mass, or condition factor. The chronic accumulation of total Hg in trout exhibited dose- and time-dependent patterns. The dysregulated genes have multiple functional annotations, such as involving metabolism, cellular development, ion binding and homeostasis, stress response, immune response, transcriptional regulation, hemolytic development, and apoptotic pathways. These results show that numerous molecular pathways involved in the growth and development of multiple organ systems are disrupted by exposure to moderate levels of dietary MeHg. The dysregulated genes will be selected by further analysis and used as biomarkers for MeHg exposure in aquatic environments.
2013-06-01 | GSE32429 | GEO
Project description:Juvenile rainbow trout were fed Biodiet starter (4% body weight per day) with MeHg added at 0, 0.5, 5 and 50 ppm for six weeks. Atomic absorption spectrometry was applied to measure the level of MeHg in the whole fish body. Trout at six weeks were sampled from each group for gene expression analysis by cGRASP 16K cDNA microarrays. MeHg-exposed rainbow trout did not show overt signs of toxicity, nor were significant differences seen in mortality, length, mass, or condition factor. The chronic accumulation of total Hg in trout exhibited dose- and time-dependent patterns. The dysregulated genes have multiple functional annotations, such as involving metabolism, cellular development, ion binding and homeostasis, stress response, immune response, transcriptional regulation, hemolytic development, and apoptotic pathways. These results show that numerous molecular pathways involved in the growth and development of multiple organ systems are disrupted by exposure to moderate levels of dietary MeHg. The dysregulated genes will be selected by further analysis and used as biomarkers for MeHg exposure in aquatic environments. Juvenile rainbow trout (Oncorhynchus mykiss, average body 0.118g) were fed Biodiet Starter (Bio-Oregon) 4% of body weight per day with MeHg added at 0ppm, 0.5ppm, 5ppm and 50ppm (with ethanol as vehicle). Trout at six weeks were sampled from each group for gene expression analysis. Total RNA from individual fish was isolated using Trizol reagent (Invitrogen) and further purified using the RNeasy MiniElute cleanup kit (Qiagen).RNA of ten fish from control group was pooled as a common reference, and total RNA of five individual fish from control and MeHg-treated groups were randomly selected for microarray experiment. cDNA was synthesized from 1 M-NM-<g pooled RNA using SuperScript II Reverse Transcriptase (Invitrogen) according to the manufacturerM-bM-^@M-^Ys protocol. The common reference cDNA targets were labeled with Cy3 and cDNA of individual fish from each group was labeled with Cy5 using the Array 900 Expression Array Detection kit (Genisphere) according to the manufacturerM-bM-^@M-^Ys protocol. The labeled cDNA targets were hybridized to cGRASP 16K cDNA microarrays at 50M-BM-0C for 16 hours. Following the first hybridization, arrays were washed in 2X SSC, 0.2% SDS solution at 50 C 1 x 15 min, 2X SSC 1 x 15 min at room temperature, then 0.2X SSC for 1 x 15 min at room temperature. The fluorescent labeling hybridization (50 C for 4hr) utilized the Genisphere 3DNA Cy3 and Cy5 capture reagents in formamide hybridization buffer. The slides were washed as described above, and the arrays were dried by centrifugation. were scanned using the ScanArray Express (PerkinElmer) at 10 um resolution. The TIFF images of arrays were generated with ScanArray Express software and the intensities of raw data of two-channel arrays were collected by the ImaGene 6.0 (BioDiscovery). Statistical analysis of microarray data was performed using scripts written in R language with LIMMA package.
2013-06-01 | E-GEOD-32429 | biostudies-arrayexpress
Project description:The aim of this study was to complete and fully characterize the proteome of rainbow trout coelomic fluid (CF). Furthermore, we intended to identify the proteins responsible for the extension of egg viability in salmonids coelomic fluid. For this, the proteomic composition of different salmonids CF and non-salmonids CF were compared to identify proteins specifically present in salmonids CF. Those proteins could be responsible for the egg conservation property of the salmonids CF. In parallel, rainbow trout CF has been fractionated using HPLC coupled to gel filtration or ion exchange columns. We have then tested the egg conservation properties of the different fractions obtained. Proteins present in the fractions allowing egg quality preservation were identified. Identifying the CF components involved in egg viability would have important applied outputs with various biotechnological applications for aquaculture. It could help understanding egg quality preservation mechanisms, and consequently improving egg storage condition.
2024-05-21 | PXD034989 | Pride
Project description:Domestication has produced faster-growing strains of animals for use in agriculture, but selection has been applied with little knowledge of the underlying genetic changes that arose throughout the process. Mammals and birds have been domesticated for thousands of years whereas fish have been domesticated only recently; therefore, wild progenitor strains remain for comparison. Rainbow trout (Oncorhynchus mykiss) have undergone intensive selection and domesticated strains grow more rapidly than extant wild strains. To assess physiological pathways altered by domestication, whole-genome mRNA expression was measured in brain, muscle and liver of size-matched domestic and wild trout using a 16K (cGRASP) salmonid microarray. A large number of genes differed between strains, ranging from 3% of genes in brain to 9% in muscle. Domestic fish had more down-regulated genes in the brain relative to wild fish, whereas more genes were up-regulated in domestic liver and muscle. Relative to wild fish, there was a down-regulation of cell division and an up-regulation of structural genes in the brain of domestic fish. In liver from domestic fish, there was an up-regulation of genes related to transport with a down-regulation of lipid binding. Analysis of the functional categories for muscle indicated that most pathways, including pathways related to metabolism and catabolism, were up-regulated in domestic fish. Comparison of these results to other genomic studies on transgenic, domestic and wild salmonids suggests that similar physiological pathways are altered systemically to support faster rates of growth, regardless of the underlying genetic alteration that has caused the altered growth. Microarray analyses were performed on six individual fish per group of wild type and domestic rainbow trout hybridized (one slide per individual) against a common wild-type RNA pool.
2010-05-16 | E-GEOD-16901 | biostudies-arrayexpress
Project description:Domestication has produced faster-growing strains of animals for use in agriculture, but selection has been applied with little knowledge of the underlying genetic changes that arose throughout the process. Mammals and birds have been domesticated for thousands of years whereas fish have been domesticated only recently; therefore, wild progenitor strains remain for comparison. Rainbow trout (Oncorhynchus mykiss) have undergone intensive selection and domesticated strains grow more rapidly than extant wild strains. To assess physiological pathways altered by domestication, whole-genome mRNA expression was measured in brain, muscle and liver of size-matched domestic and wild trout using a 16K (cGRASP) salmonid microarray. A large number of genes differed between strains, ranging from 3% of genes in brain to 9% in muscle. Domestic fish had more down-regulated genes in the brain relative to wild fish, whereas more genes were up-regulated in domestic liver and muscle. Relative to wild fish, there was a down-regulation of cell division and an up-regulation of structural genes in the brain of domestic fish. In liver from domestic fish, there was an up-regulation of genes related to transport with a down-regulation of lipid binding. Analysis of the functional categories for muscle indicated that most pathways, including pathways related to metabolism and catabolism, were up-regulated in domestic fish. Comparison of these results to other genomic studies on transgenic, domestic and wild salmonids suggests that similar physiological pathways are altered systemically to support faster rates of growth, regardless of the underlying genetic alteration that has caused the altered growth. Microarray analyses were performed on nine individual fish per group of wild type and domestic rainbow trout hybridized (one slide per individual) against a common wild-type RNA pool.
2010-05-16 | E-GEOD-16889 | biostudies-arrayexpress
Project description:Domestication has produced faster-growing strains of animals for use in agriculture, but selection has been applied with little knowledge of the underlying genetic changes that arose throughout the process. Mammals and birds have been domesticated for thousands of years whereas fish have been domesticated only recently; therefore, wild progenitor strains remain for comparison. Rainbow trout (Oncorhynchus mykiss) have undergone intensive selection and domesticated strains grow more rapidly than extant wild strains. To assess physiological pathways altered by domestication, whole-genome mRNA expression was measured in brain, muscle and liver of size-matched domestic and wild trout using a 16K (cGRASP) salmonid microarray. A large number of genes differed between strains, ranging from 3% of genes in brain to 9% in muscle. Domestic fish had more down-regulated genes in the brain relative to wild fish, whereas more genes were up-regulated in domestic liver and muscle. Relative to wild fish, there was a down-regulation of cell division and an up-regulation of structural genes in the brain of domestic fish. In liver from domestic fish, there was an up-regulation of genes related to transport with a down-regulation of lipid binding. Analysis of the functional categories for muscle indicated that most pathways, including pathways related to metabolism and catabolism, were up-regulated in domestic fish. Comparison of these results to other genomic studies on transgenic, domestic and wild salmonids suggests that similar physiological pathways are altered systemically to support faster rates of growth, regardless of the underlying genetic alteration that has caused the altered growth. Microarray analyses were performed on seven individual fish per group of wild type and domestic rainbow trout hybridized (one slide per individual) against a common wild-type RNA pool.
2010-05-16 | E-GEOD-16897 | biostudies-arrayexpress
Project description:Dose-dependent effects of TCDD in juvenile rainbow trout
| PRJNA196313 | ENA