Mice lacking the function of the PcG protein CBX2 (also known as M33) show defects in gonadal, adrenal, and splenic development. In particular, XY knockout mice develop ovaries but not testes, and the gonads are hypoplastic in both sexes.
Cbx2, a polycomb group gene, is required for Sry gene expression in mice.
Specimen part
View SamplesSeries of samples studying effect of knock out Emx2 in urogenital epithelium of mouse embryos at E10.5.
Abnormal epithelial cell polarity and ectopic epidermal growth factor receptor (EGFR) expression induced in Emx2 KO embryonic gonads.
No sample metadata fields
View SamplesEpigenetic gene regulation in various oncogenic pathways is currently an important focus of cancer research. The PI3K pathway plays a pivotal role in hepatocellular carcinoma, but the significance of histone modification in the PI3K pathway-dependent hepatotumorigenesis remains unknown.
Impact of histone demethylase KDM3A-dependent AP-1 transactivity on hepatotumorigenesis induced by PI3K activation.
Specimen part
View SamplesThe cellular ontogeny of hematopoietic stem cells (HSCs) remains poorly understood because their isolation from and their identification in early developing small embryos are difficult. We attempted to dissect early developmental stages of HSCs using an in vitro mouse embryonic stem cell (ESC) differentiation system combined with inducible HOXB4 expression. Here we report the identification of pre-HSCs and an embryonic type of HSCs (embryonic HSCs) as intermediate cells between ESCs and HSCs. Both pre-HSCs and embryonic HSCs were isolated by their c-Kit+CD41+CD45- phenotype. Pre-HSCs did not engraft in irradiated adult mice. After co-culture with OP9 stromal cells and conditional expression of HOXB4, pre-HSCs gave rise to embryonic HSCs capable of engraftment and long-term reconstitution in irradiated adult mice. Blast colony assays revealed that most hemangioblast activity was detected apart from the pre-HSC population, implying the early divergence of pre-HSCs from hemangioblasts. Gene expression profiling suggests that a particular set of transcripts closely associated with adult HSCs is involved in the transition of pre-HSC to embryonic HSCs.
Stepwise development of hematopoietic stem cells from embryonic stem cells.
Treatment
View SamplesKRAP (Ki-ras-induced actin-interacting protein) is a cytoskeleton-associated protein and a ubiquitous protein among tissues, originally identified as a cancer-related molecule. KRAP-deficient (KRAP-/-) mice show enhanced metabolic rate, decreased adiposity, improved glucose tolerance, hypoinsulinemia and hypoleptinemia. KRAP-/- mice are also protected against high-fat diet-induced obesity and insulin resistance despite of hyperphagia.
Altered energy homeostasis and resistance to diet-induced obesity in KRAP-deficient mice.
No sample metadata fields
View SamplesKRAP (Ki-ras-induced actin-interacting protein) is a cytoskeleton-associated protein and a ubiquitous protein among tissues, originally identified as a cancer-related molecule. KRAP-deficient (KRAP-/-) mice show enhanced metabolic rate, decreased adiposity, improved glucose tolerance, hypoinsulinemia and hypoleptinemia. KRAP-/- mice are also protected against high-fat diet-induced obesity and insulin resistance despite of hyperphagia.
Altered energy homeostasis and resistance to diet-induced obesity in KRAP-deficient mice.
No sample metadata fields
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Forced expression of the histone demethylase Fbxl10 maintains self-renewing hematopoietic stem cells.
Specimen part
View SamplesMouse CD34(-)KSL hematopoietic stem cells and CD34(+)KSL multipotent progenitors were purified by cell sorting from bone marrow of 8-week-old C57BL/6 mice, and their gene expression was analyzed.
Forced expression of the histone demethylase Fbxl10 maintains self-renewing hematopoietic stem cells.
Specimen part
View SamplesTreatment of DBA/2J mice with a combination of L-methionine and valproic acid significantly attenuated progressive hearing loss. We examined gene expression in the whole cochlea of the mice. This study was aimed to detect genes of which change in expression levels were associated with attenuation of progressive hearing loss in the mice.
Attenuation of progressive hearing loss in DBA/2J mice by reagents that affect epigenetic modifications is associated with up-regulation of the zinc importer Zip4.
Sex, Age, Specimen part
View SamplesWe previously found that mice with heterozygous knockout of the alpha-isoform of calcium/calmodulin-dependent protein kinase II (alpha-CaMKII HKO mice) show various dysregulated behaviors, including cyclic variations in locomotor activity (LA), suggesting that alpha-CaMKII HKO mice may serve as an animal model showing infradian oscillation of mood. We performed gene expression microarray analysis of dentate gyrus from alpha-CaMKII HKO mice. Mice were selected for the sampling such that their LA levels varied among the mice.
Circadian Gene Circuitry Predicts Hyperactive Behavior in a Mood Disorder Mouse Model.
Specimen part
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