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GSE26600
Mus musculus
91 Downloadable Samples
Description
Methylazoxymethanol (MAM), the genotoxic metabolite of the cycad azoxyglucoside cycasin, induces genetic alterations in bacteria, yeast, plants, insects and mammalian cells, but adult nerve cells are thought to be unaffected. We show that the brains of young adult mice treated with a single systemic dose of MAM display DNA damage (O6-methylguanine lesions) that peaks at 48 hours and decline to near-normal levels at 7 days post-treatment. By contrast, at this time, MAM-treated mice lacking the gene encoding the DNA repair enzyme O6-methylguanine DNA methyltransferase (MGMT), showed persistent O6-methylguanine DNA damage. The DNA damage was linked to cell-signaling pathways that are perturbed in cancer and neurodegenerative disease. These data are consistent with the established carcinogenic and developmental neurotoxic properties of MAM in rodents, and they support the proposal that cancer and neurodegeneration share common signal transduction pathways. They also strengthen the hypothesis that early life exposure to the MAM glucoside cycasin has an etiological association with a declining, prototypical neurodegenerative disease seen in Guam, Japan, and New Guinea populations that formerly used the neurotoxic cycad plant for medicine and/or food. Exposure to environmental genotoxins may have relevance to the etiology of related tauopathies, notably, Alzheimers disease, as well as cancer.
Publication Title
The cycad genotoxin MAM modulates brain cellular pathways involved in neurodegenerative disease and cancer in a DNA damage-linked manner.
Sample Metadata Fields
Sex, Specimen part, Time
View Samples- Danio rerio
- 1 Downloadable Sample
Description
Domesticated animal populations often show profound reductions in predator avoidance and fear-related behavior compared to wild populations. These reductions are remarkably consistent and have been observed in a diverse array of taxa including fish, birds, and mammals. Experiments conducted in common environments indicate that these behavioral differences have a genetic basis. In this study, we quantified differences in fear-related behavior between wild and domesticated zebrafish strains and used microarray analysis to identify genes that may be associated with this variation.
Publication Title
Brain transcriptome variation among behaviorally distinct strains of zebrafish (Danio rerio).
Sample Metadata Fields
Sex, Specimen part
View Samples- Mus musculus
- 86 Downloadable Samples
Description
These studies address temporal changes in gene expression during spontaneous sleep and extended wakefulness in the mouse cerebral cortex, a neuronal target for processes that control sleep; and the hypothalamus, an important site of sleep regulatory processes. We determined these changes by comparing expression in sleeping animals sacrificed at different times during the lights on period, to that in animals sleep deprived and sacrificed at the same diurnal time.
Publication Title
Macromolecule biosynthesis: a key function of sleep.
Sample Metadata Fields
Sex, Age, Specimen part
View Samples- Mus musculus
- 215 Downloadable Samples
Description
Isoniazid induced varying degrees of hepatic steatosis in an inbred strain Mouse Diversity Panel (MDP) study. RNA was isolated from all animals for analysis of gene expression changes in the liver. The objective of this study was to identify gene expression changes that drive isoniazid-induced steatosis.
Publication Title
A systems biology approach utilizing a mouse diversity panel identifies genetic differences influencing isoniazid-induced microvesicular steatosis.
Sample Metadata Fields
Sex, Specimen part, Treatment
View Samples- Mus musculus
- 6 Downloadable Samples
Description
The gene expression of bone marrow cells of mice enriched for
Publication Title
Gremlin 1 identifies a skeletal stem cell with bone, cartilage, and reticular stromal potential.
Sample Metadata Fields
Sex, Specimen part
View Samples- Mus musculus
- 10 Downloadable Samples
Description
Differential gene expression of cerebral cortex might be responsible for distinct neurovascular developments between different mouse strains
Publication Title
A novel genetic locus modulates infarct volume independently of the extent of collateral circulation.
Sample Metadata Fields
Sex, Specimen part
View Samples- Mus musculus
- 3 Downloadable Samples
Description
The goal of this experiment was to define gene expression patterns of two mouse retinal neuron subsets that express the Thy1-mitoCFP-P (MP) transgene.
Publication Title
Neurod6 expression defines new retinal amacrine cell subtypes and regulates their fate.
Sample Metadata Fields
Specimen part
View Samples- Mus musculus
- 5 Downloadable Samples
Description
We determined whole genome expression changes in 2 migratory cell lines that were derived from a parent HCC cell line.
Publication Title
A novel KLF6-Rho GTPase axis regulates hepatocellular carcinoma cell migration and dissemination.
Sample Metadata Fields
Specimen part, Cell line
View Samples- Mus musculus
- 1 Downloadable Sample
Description
TBR1 is a forebrain specific T-box transcription factor. Tbr1-/- mice have been characterized by defective axonal projections from cerebral cortex and abnormal neuronal migration of cerebral cortex and amygdala.
Publication Title
Tbr1 haploinsufficiency impairs amygdalar axonal projections and results in cognitive abnormality.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 6 Downloadable Samples
Illumina NovaSeq 6000
Description
Cigarette smoke (CS) is one of risk factor to chronic obstructive pulmonary disease that is the major causes of death in the world. Furthermore, CS is an independent risk factor for chronic kidney disease (CKD) in the general adult population. The goal of this project was to identified the mechanisms of renal damage that might be associated with exposure to CS extract (CSE) in human kidney proximal tubular epithelial cell line (HK-2 cells) cells. Overall design: RNA sequencing of human kidney proximal tubular epithelial cell line (HK-2 cells) after 24 hours exposure to 0.6% CSE.
Publication Title
Cigarette Smoke Exposure Increases Glucose-6-phosphate Dehydrogenase, Autophagy, Fibrosis, and Senescence in Kidney Cells In Vitro and In Vivo.
Sample Metadata Fields
Specimen part, Treatment, Subject
View Samples