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Differences in nucleus accumbens transcriptome are associated with high motivation for palatable reward in C3H/hen male mice exposed to maternal separation [medial prefrontal cortex]

ABSTRACT: The aim of this study was to determine the impact of early life stress on the motivation for a palatable nutritional reward in two mouse strains. Our data showed that MS associated with unpredictable chronic mild stress in lactating dams exacerbated motivation for a palatable food reward (sweetened milk) in both males and females C3H/HeN mice. Interestingly, no effect of MS was reported on motivation in C57Bl/6J mice strain. The transcriptomic analysis revealed that exacerbated motivation in MS C3H/HeN male mice was associated with marked changes in gene expressions in the NAc, whereas no significant changes were reported in PFC or hypothalamus.

ORGANISM(S): Mus musculus

PROVIDER: GSE222780 | GEO | 2023/07/24

REPOSITORIES: GEO

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Differences in nucleus accumbens transcriptome are associated with high motivation for palatable reward in C3H/hen male mice exposed to maternal separation [hypothalamus]

Project description:The aim of this study was to determine the impact of early life stress on the motivation for a palatable nutritional reward in two mouse strains. Our data showed that MS associated with unpredictable chronic mild stress in lactating dams exacerbated motivation for a palatable food reward (sweetened milk) in both males and females C3H/HeN mice. Interestingly, no effect of MS was reported on motivation in C57Bl/6J mice strain. The transcriptomic analysis revealed that exacerbated motivation in MS C3H/HeN male mice was associated with marked changes in gene expressions in the NAc, whereas no significant changes were reported in PFC or hypothalamus.

2023-07-24 | GSE222777 | GEO

Differences in nucleus accumbens transcriptome are associated with high motivation for palatable reward in C3H/hen male mice exposed to maternal separation [nucleus accumbens]

2023-07-24 | GSE222779 | GEO

Gut microbes affect the motivation for food reward during obesity

Project description:Gut microbes and food reward motivation

| PRJEB52720 | ENA

Citrobacter rodentium triggers exaggerated mucosal responses in mice developing severe intestinal disease

Project description:Citrobacter rodentium is commonly used to elucidate mucosal responses to infection in mice developing mild disease (e.g. C57BL/6), while little is known about host responses to infection in mice developing severe disease (e.g. C3H/HeN). We report that the phyla Bacteroidetes is a minor component of the tissue-associated microbiome in uninfected C3H/HeN mice. Following infection, C. rodentium rapidly and uniformly colonises the C3H/HeN colonic mucosa, which coincides with downregulation of proteins involved in the TCA cycle and oxidative phosphorylation in intestinal epithelial cells (IECs). In contrast, we observed upregulation of DNA replication and DNA damage repair processes, as well as cholesterol biogenesis, import and export, nutritional immunity, IL-22 and INFg responses, and expression of NLRP3, in IECs. Moreover, C. rodentium triggers a staggered cell proliferation response from 3 days post infection, which correlated with a higher abundance of SLC5A9 and reduced abundance of the IEC differentiation markers SLC26A3 and CA4. Uniquely, C. rodentium triggers differential secretion of gel-forming mucins, with the number of goblet cells filled with acidic and neutral mucins dramatically increasing and decreasing, respectively. Together, these results show that despite vigorous responses, C3H/HeN mice succumb to C. rodentium infection, possibly as a result of excessive and disordered mucosal responses.

2020-01-21 | PXD012846 | Pride

Transcriptome analysis in the medial prefrontal cortex of mice exposed to multi-hit early adversity

Project description:We have employed whole genome microarray expression profiling to identify long-term gene expression changes associated with early adversity in male and female C3H/HeN mice

2019-08-04 | GSE116416 | GEO

EGR3 regulates opioid-related nociception and motivation in male rats

Project description:Chronic pain can be a debilitating condition, leading to profound changes in nearly every aspect of life. However, the reliance on opioids such as oxycodone for pain management is thought to initiate dependence and addiction liability. The neurobiological intersection at which opioids relieve pain and possibly transition to addiction is poorly understood. Using RNA sequencing pathway analysis in rats with complete Freund's adjuvant (CFA)-induced chronic inflammation, we found that the transcriptional signatures in the medial prefrontal cortex (mPFC; a brain region where pain and reward signals integrate) elicited by CFA in combination with oxycodone differed from those elicited by CFA or oxycodone alone. However, the expression of Egr3 was augmented in all animals receiving oxycodone. Furthermore, virus-mediated overexpression of EGR3 in the mPFC increased mechanical pain relief but not the affective aspect of pain in animals receiving oxycodone, whereas pharmacological inhibition of EGR3 via NFAT attenuated mechanical pain relief. Egr3 overexpression also increased the motivation to obtain oxycodone infusions in a progressive ratio test without altering the acquisition or maintenance of oxycodone self-administration. Taken together, these data suggest that EGR3 in the mPFC is at the intersection of nociceptive and addictive-like behaviors.

2023-05-18 | GSE232804 | GEO

Mouse Inflammatory Cytokines and Receptors Microarray-RNA profiling in F4/80+ and CD11c+ cells from lungs of WT mice before and after Mycoplasma pulmonis infection

Project description:RNA profiling of inflammatory chemokines, cytokines and receptors in AUTOMACS sorted F4/80+ and CD11c+ cells from lungs of 6-12 week old wild-type C3H/HeN mice before and after 14-day Mycoplasma pulmonis infection

2011-11-02 | GSE33369 | GEO

Mouse Inflammatory Cytokines and Receptors Microarray-RNA profiling in F4/80+ and CD11c+ cells from lungs of WT mice before and after Mycoplasma pulmonis infection

2011-11-02 | GSE33369 | GEO

WGBS-seq, CUTANDRUN, ATAC-seq of urothelial stem cells isolated from Juvenile Naïve C3H/HeN mice

Project description:To study epigenetic changes in mouse bladder urothelial cells with different infection histories, urothelial stem cells (USCs) isolated from C3H/HeN mice with different infection histories (Adult Naive, Resolved, and Sensitized) were used to perform WGBS , ATAC, and CUT&RUN for comparison.

2023-08-21 | GSE212094 | GEO

Dnmt1/3a deletion in prefrontal cortical neurons reduces palatable food intake

Project description:DNA methylation is an important regulatory mechanism in the control of neuronal function. Both during development and following exposure to salient stimuli, plasticity in the methylation of cytosine residues leads to a change in neuron excitability that subsequently sculpts animal behavior. However, while the response of DNA methyltransferase enzymes in adult neurons to stimuli such as drugs of abuse have been described, less is known about how these enzymes regulate methylation at specific loci to change an animal’s inclination to ingest natural rewards. Specifically, we do not understand how changes in methylation within important brain areas known to regulate palatable food intake can affect ingestion, and detailed investigation of the neurophysiological and genomic effects of perturbing methyltransferase function has not been pursued. By deleting DNA methyltransferase 1 and 3a in the mouse prefrontal cortex, we observed the requirement for these enzymes in the regulation of nutrient rich food consumption in the absence of any effect on the intake of low fat and low sugar chow. We also determined that the deletion profoundly affected neuron excitability within pyramidal cells resident in superficial layers II/III of the cortex but had little effect in deep layer V neurons. Finally, reduced representation bisulfite sequencing revealed both hypo and hypermethylation in response to methyltransferase deletion, an effect that was observed in binding sites for retinoic acid receptor beta (RARβ) located within regulatory regions of genes known to affect neuronal function. Together, our data suggest that alterations in the actions of RARβ could shift neuronal activity to reduce palatable food intake.

2021-05-24 | GSE175380 | GEO

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