Project description:Mice selected for high and low acute inflammation were tested for pristane induced arthritis, showing to be susceptible and resistant, respectively. We used microarrays to detail the global programme of gene expression underlying arthritis progression during induction and identified distinct classes of differentially expressed genes during this process in the footpad of these mice.
Project description:Mice selected for high and low acute inflammation were tested for pristane induced arthritis, showing to be susceptible and resistant, respectively. We used microarrays to detail the global programme of gene expression underlying arthritis progression during induction and identified distinct classes of differentially expressed genes during this process in the footpad of these mice. AIRmax (high inflammation) and AIRmin (low inflammation) mouse footpads were collected for RNA extraction and hybridization on Affymetrix microarrays. We compared control and experimental footpads from male and female AIRmax and AIRmin mice on days 0 and 160, respectively. Please note that the AIRmax and AIRmin mice were obtained through bidirectional genetic selection, starting with a genetically heterogeneous founder population (F0) produced by intercrossing eight isogenic strains of mice of independent origins (A/J, DBA/2J, P/J, SWR/J, SJL/J, CBA/J, BALB/cJ and C57BL/6J).
Project description:We collected whole genome testis expression data from hybrid zone mice. We integrated GWAS mapping of testis expression traits and low testis weight to gain insight into the genetic basis of hybrid male sterility.
Project description:Comparison of gene expression in inguinal lymph nodes in four groups of rats; one with induced arthritis by injection with pristane, one injected with phytol, one injected with both pristane and phytol, and one untreated group. The objective was to obtain a molecular understanding of the protective effects of phytol on pristane induced arthritis (PIA). The animals were sacrificed close to disease onset, i.e. ten days after administration.
Project description:We collected whole genome testis expression data from hybrid zone mice. We integrated GWAS mapping of testis expression traits and low testis weight to gain insight into the genetic basis of hybrid male sterility. Gene expression was measured in whole testis from males aged 62-86 days. Samples include 190 first generation lab-bred male offspring of wild-caught mice from the Mus musculus musculus - M. m. domesticus hybrid zone.
Project description:To characterize the genetic basis of hybrid male sterility in detail, we used a systems genetics approach, integrating mapping of gene expression traits with sterility phenotypes and QTL. We measured genome-wide testis expression in 305 male F2s from a cross between wild-derived inbred strains of M. musculus musculus and M. m. domesticus. We identified several thousand cis- and trans-acting QTL contributing to expression variation (eQTL). Many trans eQTL cluster into eleven ‘hotspots,’ seven of which co-localize with QTL for sterility phenotypes identified in the cross. The number and clustering of trans eQTL - but not cis eQTL - were substantially lower when mapping was restricted to a ‘fertile’ subset of mice, providing evidence that trans eQTL hotspots are related to sterility. Functional annotation of transcripts with eQTL provides insights into the biological processes disrupted by sterility loci and guides prioritization of candidate genes. Using a conditional mapping approach, we identified eQTL dependent on interactions between loci, revealing a complex system of epistasis. Our results illuminate established patterns, including the role of the X chromosome in hybrid sterility.
