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GSE42084
Danio rerio
12 Downloadable Samples
Affymetrix Zebrafish Genome Array (zebrafish)
Description
To increase the utility of the zebrafish gene expression bioassay for assessing EDC effects on multiple gene targets and tissue types, and to expand our understanding of genetic overlap between estrogen receptor (ER) and arylhydrocarbon receptor (AhR) mediated signaling pathways, we conducted microarray analysis of zebrafish embryos exposed to estradiol and dioxin alone or in combination. Of >16,000 probe sets on the array, 34 were regulated by estradiol (E2), 86 by dioxin (TCDD) and 109 by E2+TCDD (as chosen by >2-fold change and p<0.1). Of 62 genes selected for verification by QPCR, 14 genes, or 22% were reproducibly up- or down-regulated, offering potential additional target genes for screening of estrogen- and dioxin-like EDC. The majority of these successful hits, 11, were TCDD-responsive. In addition, all of the target genes routinely evaluated in this laboratory (AroB, Vtg1, and Esr1: E2-responsive; Cyp1a: TCDD- responsive; Vtg1: E2+TCDD-responsive) were verified with these arrays, testifying to the power of microarray analysis in finding reliable responsive genes. However, over two-thirds of the novel up- or down- regulated probes were not annotated as zebrafish genes, and many of the identified genes were changed only 2- to 3-fold, an effect often not reproduced by QPCR. Additional responsive genes were identified for each treatment condition, and while low levels of expression and low magnitude fold changes make those for E2 responsiveness or interaction between E2 and TCDD response unlikely to serve as robust biomarkers, their response to EDCs may assist in understanding the regulation of existing biomarkers and zebrafish endocrine systems as a whole. In addition to a source for potential EDC screening biomarkers, these studies provide an entry point to further study physiological effects of ER and AHR ligands and cross-talk between these signaling pathways, in a physiologically relevant in vivo model.
Publication Title
No associated publication
Sample Metadata Fields
Specimen part
View Samples- Homo sapiens
- 40 Downloadable Samples
- Affymetrix Human Genome U133B Array (hgu133b), Affymetrix Human Genome U133A Array (hgu133a)
Description
Gene expression profiles in blasts from three APL patients expressing PML/RAR were assessed before and after treatment with 1 uM retinoic acid (RA) in vitro for four hours. We then studied a U937 clone conditionally expressing PML/RAR (U937-PR), (Grignani et al. 1993) (Alcalay et al. 2003), and compared the gene expression profile prior to and after 4 hours of treatment with 1 uM RA, to that obtained from a cell line bearing an empty vector (U937-MT). For each sample, biotinylated cRNA targets were synthesized starting from 5ug of total RNA, and hybridized to the complete set of HG-U133 Affymetrix oligonucleotide chips, which explores the expression of approximately 45,000 human transcripts. Results were analyzed using MASv5 and further elaborated with the GenePicker software. GeneChip probe sets regulated by RA in each sample were clustered into non-redundant regulated genes according to UniGene release Hs.166.
Publication Title
Molecular signature of retinoic acid treatment in acute promyelocytic leukemia.
Sample Metadata Fields
Specimen part, Disease, Cell line, Subject, Compound
View Samples- Homo sapiens
- 12 Downloadable Samples
- Affymetrix Human Genome U133A Array (hgu133a)
Description
We analyzed gene expression in 184 (finite life span) and HMT3522 S1 (immortal non-malignant) HMECs on successive days (3, 5, and 7) post-seeding in a laminin-rich extracellular matrix assay. Both HMECs underwent growth arrest in G0/G1 and differentiated into polarized acini between days 5 and 7.
Publication Title
Gene expression signature in organized and growth-arrested mammary acini predicts good outcome in breast cancer.
Sample Metadata Fields
Sex, Specimen part, Cell line, Time
View Samples- Homo sapiens
- 134 Downloadable Samples
IlluminaHiSeq2500, IlluminaHiSeq2000
Description
No description.
Publication Title
No associated publication
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 2 Downloadable Samples
- Illumina HiSeq 2500
Description
RNA-seq of Babesia microti isolates and rodent host
Publication Title
No associated publication
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 2 Downloadable Samples
- Illumina HiSeq 2500
Description
RNA-seq of Babesia microti isolates and rodent host
Publication Title
No associated publication
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 2 Downloadable Samples
- Illumina HiSeq 2500
Description
RNA-seq of Babesia microti isolates and rodent host
Publication Title
No associated publication
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 2 Downloadable Samples
- Illumina HiSeq 2500
Description
RNA-seq of Babesia microti isolates and rodent host
Publication Title
No associated publication
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 2 Downloadable Samples
- Illumina HiSeq 2500
Description
RNA-seq of Babesia microti isolates and rodent host
Publication Title
No associated publication
Sample Metadata Fields
No sample metadata fields
View Samples- Mus musculus
- 1 Downloadable Sample
- Illumina HiSeq 2500
Description
RNA-seq of Babesia microti isolates and rodent host
Publication Title
No associated publication
Sample Metadata Fields
No sample metadata fields
View Samples