Project description:Transcription profiling by high throughput sequencing of oocytes from four inbred mouse strains (129/Sv, C57Bl/6J, C3H/HeN, and DBA/2J)
Project description:Expression profiling of liver tissue from 111 F2 female mice resulting from a cross between C57BL/6J and DBA/2J inbred mouse strains. Mice were feed a chow diet for 12 months followed by 4 months on an atherogenic high-fat, high-cholesterol diet. Parental and F2 mice were killed at 16 months of age. The livers were removed immediately and flash frozen for expression profiling. See Schadt, et al., Nature , Vol 422(6929):297-302 for details. Keywords = Genetics of Gene Expression Keywords = mouse Keywords = C57BL6 Keywords = DBA Keywords: repeat sample
Project description:Expression profiling of liver tissue from 111 F2 female mice resulting from a cross between C57BL/6J and DBA/2J inbred mouse strains. Mice were feed a chow diet for 12 months followed by 4 months on an atherogenic high-fat, high-cholesterol diet. Parental and F2 mice were killed at 16 months of age. The livers were removed immediately and flash frozen for expression profiling. See Schadt, et al., Nature , Vol 422(6929):297-302 for details. Keywords = Genetics of Gene Expression Keywords = mouse Keywords = C57BL6 Keywords = DBA
Project description:Mlycd encodes malonyl-CoA decarboxylase (MCD), which is an enzyme that localizes in the cytosolic, mitochondrial, and peroxisomal compartments and catalyzes the conversion of malonyl-CoA into acetyl-CoA. Malonyl-CoA can be converted into malonylcarnitine (C3DC). Patients with an autosomal recessive defect of MCD and MCD KO mice have pronounced elevations of C3DC. Analysis of plasma C3DC levels in the BxD genetic reference population revealed increased levels in BxD strains that harbor the DBA/2J haplotype at the site of the Mlycd gene. RNA sequencing was performed on two samples of DBA/2J mouse livers and two C57BL/6J mouse livers. Decreased expression of Mlycd gene as well as intronic reads in intron 2 were observed in DBA/2J livers. Long-read sequecing of DBA/2J livers in the Mlycd region confirmed an intracisternal A-particle (IAP) retrotransposon in intron 2 of the DBA/2J Mlycd sequence. To confirm the causal nature of the variant, DBA/2J mice with and without the C57BL/6J variant of Mlycd spliced in were tested for products of MCD enzymatic activity, and the C57BL/6J variant was able to rescue the phenotype seen in the DBA/2J mice.
Project description:Regulation of the immune response to Salmonella enterica serovar Typhimurium (S. Typhimurium) infection is a complex process, influenced by the interaction between genetic and environmental factors. Different inbred strains of mice exhibit distinct levels of resistance to S. Typhimurium infection, ranging from susceptible (e.g., C57BL/6J) to resistant (e.g., DBA/2J) strains. However, the underlying molecular mechanisms contributing to the host response remain elusive. In this study, we present a comprehensive proteomics profiling of spleen tissues from C57BL/6J and DBA/2J strains with different doses of S. Typhimurium infection by tandem tag mass coupled with two-dimensional liquid chromatography-tandem mass spectrometry (TMT-LC/LC-MS/MS). We identified and quantified 3,986 proteins, resulting in 475 differentially expressed proteins (DEPs) between C57BL/6J and DBA/2J strains. Functional enrichment analysis unveiled that the mechanism of innate immune responses to S. Typhimurium infection could be associated with several signaling pathways, including the interferon signaling pathway. We experimentally validated the roles of interferon signaling pathway in innate immune response to S. Typhimurium infection using IFN-γ neutralization assay. We further illustrated the roles of macrophage cells and pro-inflammatory cytokines in the mechanisms underlying the resistance to S. Typhimurium using qRT-PCR. Taken together, our results provide new insights into the genetic regulation of the immune response to S. Typhimurium infection in mice and might provide potential protein targets for controlling the infection.
Project description:Untargeted lipidomics of liver samples from female and male DBA/2J or C57BL/6J mice fed a control diet, Western diet, or high- or low-isoleucine Western diet. Both positive and negative mode are included.