Project description:We used Affymetrix miRNA arrays to analyze the expression of miRNAs in the frontal cortex and hippocampus of 8-week-old C57BL/6J wt mice. We compared these microarray-based expression profiles to ones obtained by miRNA sequencing from the same brain regions of the same mouse strain. miRNA expression profiling of frontal cortex and hippocampus from C57BL/6J mice (N=3) was performed with Affymetrix miRNA array
Project description:We used Affymetrix miRNA arrays to analyze the expression of miRNAs in the frontal cortex and hippocampus of 8-week-old C57BL/6J wt mice. We compared these microarray-based expression profiles to ones obtained by miRNA sequencing from the same brain regions of the same mouse strain.
Project description:Gulf War Illness (GWI) is a chronic multisymptom disorder associated with prior stress and toxicant exposures. Adult male C57BL/6J mice were exposed to corticosterone (CORT) and diisopropyl fluorophosphate (DFP), followed by repeated intermittent CORT and a later immune challenge with lipopolysaccharide (LPS) or saline. ATAC-seq was performed in hippocampus and frontal cortex to assess chromatin accessibility responses associated with persistent neuroimmune priming.
Project description:Gulf War Illness (GWI) is a chronic multisymptom disorder associated with prior stress and toxicant exposures. Adult male C57BL/6J mice were exposed to corticosterone (CORT) and diisopropyl fluorophosphate (DFP), followed by repeated intermittent CORT and a later immune challenge with lipopolysaccharide (LPS) or saline. Reduced representation bisulfite sequencing (RRBS) was used to profile DNA methylation in whole blood, hippocampus, and frontal cortex collected 6 h, 12 h, and 24 h after challenge.
Project description:Gulf War Illness (GWI) is a chronic multisymptom disorder associated with prior stress and toxicant exposures. Adult male C57BL/6J mice were exposed to corticosterone (CORT) and diisopropyl fluorophosphate (DFP), followed by repeated intermittent CORT and a later immune challenge with lipopolysaccharide (LPS) or saline. RNA-seq was performed in hippocampus and frontal cortex collected 6 h, 12 h, and 24 h after challenge to define transcriptional responses associated with persistent neuroimmune priming in this mouse model of GWI.
Project description:Deaths related to opioid use have skyrocketed in the United States, leading to a public health epidemic. Research has shown that both biological (genes) and environmental (stress) precursors are linked to opioid use. In particular, stress during adolescence – a critical period of frontal lobe development – influences the likelihood of abusing drugs. However, little is known about the biological mechanisms through which adolescent stress leads to long-term risk of opioid use, or whether genetic background moderates this response. Male and female C57BL/6J were exposed to chronic variable social stress (CVSS) or control conditions throughout adolescence and then tested for prefrontal cortex miRNA gene expression. C57BL/6J mice exposed to CVSS had a downregulation of twelve miRNA in the prefrontal cortex compared to control mice.
Project description:MicroRNA (miRNA) dysregulation is well-documented in psychiatric disease, but miRNA dynamics during adolescent and early adult brain maturation, when symptoms first appear for many of these diseases, remain poorly understood. Here, we use RNA sequencing to examine miRNAs and their mRNA targets in cortex and hippocampus from early, mid-, and late adolescent and adult mice. We also use Quantitative Proteomics by tandem mass tag mass spectrometry (TMT-MS) to examine protein dynamics in cortex from the same subjects.
Project description:ntracranial electroencephalography (EEG) is commonly used to study epileptogenesis and epilepsy in experimental models. Chronic gliosis and neurodegeneration at the injury site are known to be associated with surgically implanted electrodes in both humans and experimental models. Currently, however, there are no reports on the impact of intracerebral electrodes on proteins in the hippocampus and proinflammatory cytokines in the cerebral cortex and plasma in experimental models. We used an unbiased, label-free proteomics approach to identify the altered proteins in the hippocampus, and multiplex assay for cytokines in the cerebral cortex and plasma of C57BL/6J mice following bilateral surgical implantation of electrodes into the cerebral hemispheres.
Project description:Our previous study showed that Dicer1 expression is positively correlated with the development of analgesic tolerance. To further understand the miRNA regulation by Dicer in the development of tolerance, we performed microRNA profiling using Agilent mouse miRNA arrays to identify the miRNA profiles in the prefrontal cortex from C57BL/6J (C57) mice under saline or morphine treatment.
