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GSE7755
Rattus norvegicus
54 Downloadable Samples
Affymetrix Rat Expression 230A Array (rae230a)
Description
The Long Evans/orl (LE/orl) rat is an animal model of inherited undescended testis (UDT). To explore genetic mechanisms of UDT, we studied differential gene expression in LE/orl and LE wild type (LE/wt) fetal gubernaculum and testis.
Publication Title
Altered expression of muscle- and cytoskeleton-related genes in a rat strain with inherited cryptorchidism.
Sample Metadata Fields
Sex, Specimen part
View Samples- Rattus norvegicus
- 26 Downloadable Samples
- Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
This study was designed to provide additional insight into testicular hormone production and responsiveness in the orl strain and complement ongoing efforts to characterize the genetic basis of cryptorchidism in this isolated rat colony.
Publication Title
Cryptorchidism in the orl rat is associated with muscle patterning defects in the fetal gubernaculum and altered hormonal signaling.
Sample Metadata Fields
Specimen part
View Samples- Rattus norvegicus
- 14 Downloadable Samples
Affymetrix Rat Gene 1.0 ST Array (ragene10st), Illumina ratRef-12 v1.0 expression beadchip
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
No associated publication
Sample Metadata Fields
Specimen part
View Samples- Rattus norvegicus
- 14 Downloadable Samples
- Affymetrix Rat Gene 1.0 ST Array (ragene10st)
Description
Dibutyl phthalate was administered to pregnant Sprague Dawley rats from gestational days 16-20 at either a 100 mg/kg/day or 500 mg/kg/day dose level. This timeframe covers the reproductive masculinization window which corresponds to increased androgen signalling. Dibutyl phthalate has been shown to disrupt testosterone production leading to male reproductive abnormalities. As such, we selected this exposure window for our study and examined gene expression changes in the male rat foreskin, which expresses the androgen receptor. We collected tissue samples at both gestational day 20 to identify gene expression changes immediately after exposure, and postnatal day 5 to identify gene expression changes persisting after birth using microarray analysis (Illumina RatRef 12 Bead Chips). To determine whether gene expression changes were brought on by decreased androgen signalling or additional effects of dibutyl phthalate exposure, we exposed rats to the potent androgen receptor antagonist flutamide (5 mg/kg/day) during the same period of development. Gene expression changes were compared to determine which were brought on by disruption of androgen signalling and which were the result of other aspects of chemical exposure.
Publication Title
No associated publication
Sample Metadata Fields
Specimen part
View Samples- Rattus norvegicus
- 17 Downloadable Samples
- Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
Insl3 is a testis-derived hormone that induces growth and differentiation of the fetal gubernaculum. The goal of this study was to identify genes showing altered expression in fetal gubernaculum following Insl3 exposure.
Publication Title
Insulin-like 3 exposure of the fetal rat gubernaculum modulates expression of genes involved in neural pathways.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Rattus norvegicus
- 6 Downloadable Samples
- Affymetrix Rat Gene 1.0 ST Array (ragene10st)
Description
Topoisomerase 1 (TOP1) poisons like camptothecin (CPT), which are used as chemotherapeutic agents in cancer, elicit DNA damage in quiescient neurons. In this study, we examined the effects of CPT and actinomycin D (ActD) on neuronal cells. Motor (MNs) and cortical (CNs) neurons were more susceptible to the toxic effects of CPT and ActD than fibroblasts. MNs and CNs exhibited a delayed DNA damage responseincrease in nuclear -H2AX focirelative to fibroblasts. Neuronal cells expressed higher levels of Top1 mRNA than fibroblasts which could explain their enhanced vulnerability to CPT and ActD toxicity. Microarray analysis was performed to identify differentially regulated transcripts in MNs treated with CPT for 2 hours. Many immediate-early genes including Fos and Egr-1 were upregulated in CPT-treated MNs. Fos mRNA levels were elevated in all cells types treated with CPT; Egr-1 transcript levels, however, were reduced in CPT-treated fibroblasts even though they were elevated in treated MNs and CNs. Pathway and network analysis of the differentially expressed transcripts revealed activation of ERK and JNK signaling cascades in CPT-treated MNs. In conclusion, MNs were more vulnerable than fibroblasts to the damaging effects of TOP1 poisons and they elicit a unique intracellular response to CPT treatment.
Publication Title
Identification of early gene expression changes in primary cultured neurons treated with topoisomerase I poisons.
Sample Metadata Fields
Specimen part, Treatment
View Samples- Homo sapiens
- 19 Downloadable Samples
- Affymetrix Human Gene 2.0 ST Array (hugene20st)
Description
Pediatric AML cell lines (MV4;11, AML-193 and THP-1) were treated with DNA hypomethylating agent (azacytidine) and a pan histone deactylase inhibitor (panobinostat) alone or in combination. Treatment of AML cell lines with these epigenetic drugs synergistically suppresses cell viability in vitro and in xenograft models in vivo.
Publication Title
No associated publication
Sample Metadata Fields
Cell line
View Samples- Rattus norvegicus
- 8 Downloadable Samples
- Affymetrix Rat Genome 230 2.0 Array (rat2302)
Description
High dose level dibutyl phthalate (DBP) exposure of fetal rat testes in vivo inhibits testosterone production (i.e. endocrine disruption). Here, fetal testis mRNA levels were profiled following exposure to a DBP dose level that did not significantly reduce testosterone levels. The goal was to identify the constellation of gene expression changes that do not correlate with endocrine disruption.
Publication Title
Species-specific dibutyl phthalate fetal testis endocrine disruption correlates with inhibition of SREBP2-dependent gene expression pathways.
Sample Metadata Fields
Sex, Specimen part
View Samples- Homo sapiens
- 5 Downloadable Samples
- Affymetrix Human Gene 2.0 ST Array (hugene20st), Illumina HumanMethylation450 BeadChip (HumanMethylation450_15017482)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Medulloblastoma subgroups remain stable across primary and metastatic compartments.
Sample Metadata Fields
Sex, Age, Specimen part, Subject
View Samples- Rattus norvegicus
- 26 Downloadable Samples
- Affymetrix Rat Gene 2.0 ST Array (ragene20st)
Description
This SuperSeries is composed of the SubSeries listed below.
Publication Title
Peripheral Nerve Single-Cell Analysis Identifies Mesenchymal Ligands that Promote Axonal Growth.
Sample Metadata Fields
Sex, Specimen part, Treatment
View Samples