10 Strain, 7 Brain Region
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE5055 | GEO | 2006/09/12
SECONDARY ACCESSION(S): PRJNA96697
REPOSITORIES: GEO
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Project description:Survey of gene expression in ten common inbred strains of laboratory mouse. Seven brain regions examined: amygdala, basal ganglia, cerebellum, frontal cortex, hippocampus, cingulate cortex, olfactory bulb. Experiment Overall Design: Tissue from three animals was pooled on each array. Three biological replicates per strainxregion condition. Animals were 4-5 weeks of age.
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Project description:Sexual selection involves mate preference behavior and is a critical determinant for natural selection and evolutionary biology. Previously an environmental compound (fungicide vinclozolin) was found to promote epigenetic transgenerational inheritance of modified mate selection characteristics in all progeny for three generations after exposure of a gestating female. The current study investigated gene networks involved in various regions of the brain that correlated with the mate preference behavior altered in F3-Vinclozolin lineage animals. Statistically significant correlations of differentially expressed gene clusters and modules were identified to associate with specific mate preference behaviors. This novel systems biology approach identified critical gene networks involved in mate preference behavior and demonstrated the ability of environmental factors to promote epigenetic transgenerational inheritance of this altered evolutionary biology determinant. Combined observations elucidate the potential molecular control of mate preference behavior and suggests environmental epigenetics can have a role in evolutionary biology. We used Affymetrix Rat Gene 1.0 ST microarrays to determine genes expressed differentially in F3 Vinclozolin lineage male or female rats' 6 brain areas - amygdala (Amy), hippocampus (Hipp), olfactory bulb (OlfB), cingulate cortex (CngCtx), entorhinal cortex (EnCtx), and preoptic area-anterior hypothalamus (POAH) - due to Vinclozolin treatments of their grand-grandmothers (F0). For each of 6 brain areas of male or female rats (female: amygdala (F-Amy), cingulate cortex (F-CngCTX), enterorhinal cortex (F-EnCTX), hippocampus (F-Hipp), olfactory bulbs (F-OlfB), and preoptic area-anterior hypothalamus (F-POAH); male: amygdala (M-Amy), cingulate cortex (M-CngCTX), enterorhinal cortex (M-EnCTX), hippocampus (M-Hipp), olfactory bulbs (M-OlfB), and preoptic area-anterior hypothalamus (M-POAH)), RNA samples from 2 treatment groups - F3 Control lineage (Con) or F3 Vinclozolin lineage (Vin) - were compared to each other. Each of treatment groups contained 4-6 biological replicas for each brain region. RNA for each replica was isolated from an individual animal in order to compare to individual animal mate preference behavior studied with the same rats before sacrifice. Totally, 132 RNA samples from 24 animals (6 male F3 Control, 6 male F3 Vinclozolin,6 female F3 Control, and 6 female F3 Vinclozolin) were isolated and studied.
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Project description:Posttraumatic stress disorder (PTSD) is a prevalent psychiatric disorder. Several studies have attempted to characterize molecular alterations associated with PTSD, but most findings were limited to the investigation of specific cellular markers in the periphery or defined brain regions. In the current study, we aimed to unravel affected molecular pathways/mechanisms in the fear circuitry associated with PTSD. We interrogated a foot shock induced-PTSD mouse model by integrating proteomics and metabolomics profiling data. Alterations at the proteome level were analyzed using in vivo 15N metabolic labeling combined with mass spectrometry in prelimbic cortex (PrL), anterior cingulate cortex (ACC), basolateral amygdala (BLA), central nucleus of amygdala (CeA) and CA1 of hippocampus between shocked and non-shocked (control) mice, with and without fluoxetine treatment.
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Project description:Posttraumatic stress disorder (PTSD) is a prevalent psychiatric disorder. Several studies have attempted to characterize molecular alterations associated with PTSD, but most findings were limited to the investigation of specific cellular markers in the periphery or defined brain regions. In the current study, we aimed to unravel affected molecular pathways/mechanisms in the fear circuitry associated with PTSD. We interrogated a foot shock induced-PTSD mouse model by integrating proteomics and metabolomics profiling data. Alterations at the proteome level were analyzed using in vivo 15N metabolic labeling combined with mass spectrometry in prelimbic cortex (PrL), anterior cingulate cortex (ACC), basolateral amygdala (BLA), central nucleus of amygdala (CeA) and CA1 of hippocampus between shocked and non-shocked (control) mice, with and without fluoxetine treatment.
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Project description:Interleukin (IL)-18 is recognized as a multifunctional mediator in inflammation and immune responses. In addition, the production of IL-18 is stimulated by physiological and/or psychological stress implicated in several behavioral disorders. However, it still remains unclear about the role of IL-18 on the central nervous system. In this study, we analyzed gene expression of 6 brain regions; the olfactory bulb, prefrontal cortex, striatum, amygdala, hypothalamus, and hippocampus. Microarray analysis indicated the regional differences of expression in IL-18-/- mice. In particular, the most profound change was observed in the amygdala, in which 1,237 genes were differentially expressed. We purchased IL-18-/- mice and C57BL/6 mice from Charles River Japan . To produce F1 generation mice, three male IL-18-/- mice were mated with six female C57BL/6J mice. We mated F1 mice and created their F2 littermates. Six week-old F2 mice littermates were weaned. At 12 weeks, mice were sacrificed at 14:00 under general anesthesia with diethyl ether. After the systemic perfusion with cold phosphate-buffered saline through the heart using a syringe attached to a 21-G needle, the whole mouse brains were removed. Coronal brain sections (1 mm thick) were prepared on ice using a brain slicer . The olfactory bulb was sliced between 3.5 and 4.5 anterior to bregma. The prefrontal cortex was sliced between 2.5 and 3.5 mm anterior to bregma. The striatum was sliced between -0.5 and 0.5 mm posterior to bregma. The hypothalamus, the amygdala, and the hippocampus were sliced between 1.5 and 2.5 mm posterior to bregma. Total RNA was immediately prepared from these samples using TRIzol and purified by RNeasy kit.
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