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
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.
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.
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.
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.
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
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.
Project description:The aim of this project is to use high-throughput transcriptomic approach to decipher the tumor mutational burden (TMB) of two cancer cell lines, MBT2 (urothelial) and LM8 (osteosarcoma), syngeneic of the C3H/HeN mouse strain, and to compare them as biomarker of immunogenicity (Rizvi NA et al. Science, 2015, Sha D et al. Cancer Discovery, 2020).
Project description:We performed shallow whole genome sequencing (WGS) on circulating free (cf)DNA extracted from plasma or cerebrospinal fluid (CSF), and shallow WGS on the tissue DNA extracted from the biopsy in order to evaluate the correlation between the two biomaterials. After library construction and sequencing (Hiseq3000 or Ion Proton), copy number variations were called with WisecondorX.
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 RNA pooled from pulmonary F4/80+ & CD11c+ cells of each group- Uninfected and Infected; Experiment performed twice. Comparison-RNA expression within each population of cells in Mycoplasma infected vs. uninfected mice
