Neo/null loss of Tfap2a in E10.5 mouse facial prominences
Tfap2a-dependent changes in mouse facial morphology result in clefting that can be ameliorated by a reduction in Fgf8 gene dosage.
Specimen part
View SamplesMouse infection with the tapeworm Hymenolepis diminuta leads to a less severe DNBS-colitis. Increased Th2 and regulatory cytokine production in the spleen is a hallmark of Hymenolepis diminuta infection, therefore we hypothesized that given this microenvironment, splenic adaptive cells acquire an anti-inflammatory phenotype. We tested the ability of putative splenic regulatory B cells generated by Hymenolepis diminuta infection to down-regulate intestinal inflammation. We found that unlike splenic B cells from uninfected mice, splenic B cells from Hymenolepis diminuta -infected animals ameliorated chemically-induced colitis.
Splenic B cells from Hymenolepis diminuta-infected mice ameliorate colitis independent of T cells and via cooperation with macrophages.
Specimen part
View SamplesThe Hippocampus Consortium data set provides estimates of mRNA expression in the adult hippocampus of 99 genetically diverse strains of mice including 67 BXD recombinant inbred strains, 13 CXB recombinant inbred strains, a diverse set of common inbred strains, and two reciprocal F1 hybrids.
Genetics of the hippocampal transcriptome in mouse: a systematic survey and online neurogenomics resource.
Sex, Age, Specimen part
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Dynamic changes in 5-hydroxymethylation signatures underpin early and late events in drug exposed liver.
Sex, Specimen part, Treatment, Time
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Homer1a is a core brain molecular correlate of sleep loss.
No sample metadata fields
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STAT6 transcription factor is a facilitator of the nuclear receptor PPARγ-regulated gene expression in macrophages and dendritic cells.
Specimen part, Treatment, Subject, Time
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Conserved principles of mammalian transcriptional regulation revealed by RNA half-life.
No sample metadata fields
View SamplesCopy number variation (CNV) of DNA segments has recently been identified as a major source of genetic diversity, but a more comprehensive understanding of the extent and phenotypic effect of this type of variation is only beginning to emerge. In this study we generated genome-wide expression data from 6 mouse tissues to investigate how CNVs influence gene expression.
Segmental copy number variation shapes tissue transcriptomes.
No sample metadata fields
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Zebrafish Pou5f1-dependent transcriptional networks in temporal control of early development.
No sample metadata fields
View SamplesMethylazoxymethanol (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.
The cycad genotoxin MAM modulates brain cellular pathways involved in neurodegenerative disease and cancer in a DNA damage-linked manner.
Sex, Specimen part, Time
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