Danio rerio
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA93803 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:2 or 3 Day Post Amputation Vehicle or TCDD Exposed
| PRJNA108399 | ENA
Project description:1Day Post Amputation Vehicle or Beclomethasone Exposed
| PRJNA107555 | ENA
Project description:Adult zebrafish can completely regenerate their caudal fin following amputation. This complex process is initiated by the formation of an epithelial would cap over the amputation site by 12 hours post amputation (hpa). Once the cap is formed, mesenchymal cells proliferate and migrate from sites distal to the wound plane and accumulate under the epithelial cap forming the blastemal structure within 48 hpa. Blastemal cells proliferate and differentiate, replacing the amputated tissues, which are populated with angiogenic vessels and innervating nerves during the regenerative outgrowth phase which is completed around 14 days post amputation (dpa). Regenerative outgrowth does not occur in TCDD-exposed zebrafish. To identify the molecular pathways that are perturbed by TCDD exposure, male zebrafish were i.p. injected with 50 ng/g TCDD or vehicle and caudal fins were amputated. Regenerating fin tissue was collected at 1, 3 and 5 dpa for mRNA abundance analysis. Microarray analysis and quantitative real time PCR revealed that wound healing and regeneration alone altered the expression of nearly 900 genes by at least two fold between 1 and 5 dpa. TCDD altered the abundance of 370 genes at least two fold. Among these, several known aryl hydrocarbon responsive genes were identified in addition to several genes involved in extracellular matrix composition and metabolism. The profile of misexpressed genes is suggestive of impaired cellular differentiation and extracellular matrix composition potentially regulated by Sox9b. Experiment Overall Design: Regenerating fins were isolated at 1, 3 and 5 days post amputation. Three replicates were collected at each time point. 10 fins were pooled to comprise one replicate. Fish were dosed at 0 days post amputation with vehicle control alone or 50 ng/g TCDD. Experiment Overall Design: 1 Day Post Amputation Vehicle Exposed: GSM85187, GSM85188, and GSM85189 Experiment Overall Design: 1 Day Post Amputation TCDD Exposed: GSM85190, GSM85191, and GSM85192 Experiment Overall Design: 3 Days Post Amputation Vehicle Exposed: GSM85193, GSM85194, and GSM85195 Experiment Overall Design: 3 Day Post Amputation TCDD Exposed: GSM85196, GSM85197, and GSM85198 Experiment Overall Design: 5 Days Post Amputation Vehicle Exposed: GSM85199, GSM85200, and GSM85201 Experiment Overall Design: 5 Days Post Amputation TCDD Exposed: GSM85202, GSM85203, and GSM85204
2007-10-05 | E-GEOD-3667 | biostudies-arrayexpress
Project description:The purpose of this experiment is to understand which transcripts are differentially expressed following exposure to TCDD. We used microarrays to understand global changes in gene signal intensity Adult zebrafish (danio rerio) were injected (i.p) to vehicle control or TCDD (70 ng/g) one day prior to heart ventricle amputation. A subset of fish were exposed but the hearts were not amputated. Amputated hearts were collected at 6 hours post amputation and 7 days post amputation and processed for microarray analysis
2011-11-29 | E-GEOD-33981 | biostudies-arrayexpress
Project description:Amputation of heart tissue followed by regeneration of the heart. Samples were taken at 0 hpa (hours post-amputation), 6 hpa, 12 hpa, 24 hpa, 3 dpa and 5 dpa.
2008-09-05 | E-MEXP-1239 | biostudies-arrayexpress
Project description:AB* zebrafish embryos exposed to 1 ng/mL TCDD from 1d to 5d post-fertilization.
| PRJNA117085 | ENA
Project description:Adult zebrafish can completely regenerate their caudal fin following amputation. This complex process is initiated by the formation of an epithelial would cap over the amputation site by 12 hours post amputation (hpa). Once the cap is formed, mesenchymal cells proliferate and migrate from sites distal to the wound plane and accumulate under the epithelial cap forming the blastemal structure within 48 hpa. Blastemal cells proliferate and differentiate, replacing the amputated tissues, which are populated with angiogenic vessels and innervating nerves during the regenerative outgrowth phase which is completed around 14 days post amputation (dpa). Regenerative outgrowth does not occur in TCDD-exposed zebrafish. To identify the molecular pathways that are perturbed by TCDD exposure, male zebrafish were i.p. injected with 50 ng/g TCDD or vehicle and caudal fins were amputated. Regenerating fin tissue was collected at 1, 3 and 5 dpa for mRNA abundance analysis. Microarray analysis and quantitative real time PCR revealed that wound healing and regeneration alone altered the expression of nearly 900 genes by at least two fold between 1 and 5 dpa. TCDD altered the abundance of 370 genes at least two fold. Among these, several known aryl hydrocarbon responsive genes were identified in addition to several genes involved in extracellular matrix composition and metabolism. The profile of misexpressed genes is suggestive of impaired cellular differentiation and extracellular matrix composition potentially regulated by Sox9b. Keywords: Time course and TCDD exposure response
2006-03-20 | GSE3667 | GEO
Project description:Expression data from adult zebrafish exposed to low level TCDD
| PRJNA310073 | ENA
Project description:For analysis of gene expression changes in the zebrafish larvae heart in response to TCDD exposure, three replicate samples of heart tissue were collected at 73, 74, 76 and 84 hours post fertilization from larvae exposed to 1 ng/ml TCDD or vehicle from 72 - 73 hours post fertilization. For analysis of gene expression changes in the extracardiac tissue in response to TCDD exposure, three replicate samples of zebrafish larvae bodies with the heart tissue removed were collected at 73, 74, 76 and 84 hours post fertilization from larvae exposed to 1 ng/ml TCDD or vehicle from 72 - 73 hours post fertilization.
2006-06-29 | E-MEXP-758 | biostudies-arrayexpress
Project description:Transcriptomic analyses of TCDD treated zebrafish liver
| PRJNA215326 | ENA