Project description:Shank3 is a core excitatory postsynaptic protein expressed in multiple brain regions including the medial prefrontal cortex, striatum, and hippocampus. We have previously generated and characterized Shank3-overexpressing transgenic mice, and found that these mice exhibited manic-like behavioral phenotypes. To understand molecular mechanisms underlying the behavioral changes, we performed transcriptome (RNA-sequencing) analysis of the mPFC tissues from 10 to 12-week-old wild-type and Shank3 transgenic mice.
Project description:Hormonal fluctuations throughout the ovarian cycle contribute to femalesâ?? higher vulnerability to anxiety disorders when compared to males. Notably, such sex differences are controlled by regulation of genes in the medial prefrontal cortex (mPFC) including the transcription factor early growth response 1 (Egr1) in rats, which highlights a control of anxiety-like behaviors by sexually-biased gene expression. We therefore undertook a large-scale characterization of sex differences and their interaction with the estrous cycle in the adult mPFC transcriptome and report that proestrus and diestrus females (with high and low ovarian hormones levels, respectively) exhibited a partly-opposed sexually-biased transcriptome. Surprisingly, the extent of regulations within females vastly exceeded sex differences, and support a multi-level reorganization of synaptic function across the estrous cycle. Furthermore, genome-wide analysis of Egr1 binding highlighted its role in controlling the synapse-related genes varying within females, and the sex- and estrous cycle-dependent transcriptomic reorganization in the rat mPFC. Early growth response 1 (Egr1) binding profiling in the adult rat medial prefrontal cortex of males, proestrus females, and diestrus females. A total of 9 animals were used, corresponding to 3 Males, 2 proestrus females, and 4 diestrus females.
Project description:We examined the influence of chronic morphine on microRNA expression profile in the mPFC using miRNA microarray technology. We found that 97 miRNAs (59 upregulated and 38 downregulated) were altered more than 2-fold in the mPFC from chronic morphine-treated rats.
Project description:Animal models provide opportunity to study neurobiological aspects of human alcoholism. Changes in gene expression have been implicated in mediating brain function, including reward system and addiction. The current study aimed to identify novel genes that may underlie ethanol preference. Microarray analysis comparing gene expression in nucleus accumbens (NAc), hippocampus (HP) and prefrontal medial cortex (mPFC) was performed in two rat strains selected for extreme levels of ethanol preference - Warsaw High Preferring (WHP) and Warsaw Low Preferring (WLP). The identified candidate genes may underlie differential ethanol preference in rat model of alcoholism. This is analysis of 18 RNA samples, including 9 technical replicates. Two strains of rats selected for extreme levels of ethanol preference (low preferring WLP and high preferring WHP) were compared. Three brain areas (nucleus accumbens, prefrontal medial cortex and hippocampus) were studied. For each brain area, 6 RNA samples (including 3 technical replicates) were analyzed. Each RNA sample consist of of equal amounts of total RNA from 3 male rats. Comparisons: Nucleus accumbens of WHP vs. Nucleus accumbens of WLP; Prefrontal medial cortex of WHP vs. Prefrontal medial cortex of WLP; Hippocampus of WHP vs. Hippocampus of WLP. 3 biological replicates in each comparison.
Project description:To understand the consequences of chronic exposure to fluoxetine during juvenile life on global transcriptional changes withing the rat medial prefrontal cortex in adulthood. To understand the consequences of chronic exposure to fluoxetine during juvenile life on global transcriptional changes withing the rat medial prefrontal cortex in adulthood.
Project description:To understand the consequences of chronic exposure to fluoxetine during postnatal life on global transcriptional changes withing the rat medial prefrontal cortex in adulthood. To understand the consequences of chronic exposure to fluoxetine during postnatal life on global transcriptional changes withing the rat medial prefrontal cortex in adulthood.
Project description:The medial prefrontal cortex (mPFC) is critical for both the sensory and emotional /cognitive components of pain. However, the underlying mechanism still remains largely unknown. Here, we examined changes in the transciptomic profiles in the mPFC of mice with chronic pain using RNA sequencing (RNA-seq) technology. We then performed gene expression profiling analysis using data obtained from RNA-seq of 4 different group of mPFC from mice, including ipsilateral part (Left side, the same to our operation part) of mPFC, contralateral part (Right side, opposite to our operation part) of mPFC after CCI (Chronic Constriction Injury of Sciatic Nerve) operation. Combining with naïve mice, at 28 days after operation.
Project description:Hormonal fluctuations throughout the ovarian cycle contribute to femalesâ higher vulnerability to anxiety disorders when compared to males. Notably, such sex differences are controlled by regulation of genes in the medial prefrontal cortex (mPFC) including the transcription factor early growth response 1 (Egr1) in rats, which highlights a control of anxiety-like behaviors by sexually-biased gene expression. We therefore undertook a large-scale characterization of sex differences and their interaction with the estrous cycle in the adult mPFC transcriptome and report that proestrus and diestrus females (with high and low ovarian hormones levels, respectively) exhibited a partly-opposed sexually-biased transcriptome. Surprisingly, the extent of regulations within females vastly exceeded sex differences, and support a multi-level reorganization of synaptic function across the estrous cycle. Furthermore, genome-wide analysis of Egr1 binding highlighted its role in controlling the synapse-related genes varying within females, and the sex- and estrous cycle-dependent transcriptomic reorganization in the rat mPFC. mRNA profiling of 2-3 month-old males and females Sprague-Dawley rats in either Proestrus or Diestrus. A total of 11 samples were analyzed, corresponding to 4 males, 3 proestrus females, and 4 diestrus females.