Project description:Matrix metalloprotease (MMP) -2 has been reported to be up-regulated in skeletal muscle in the lethal X-linked muscle disorder Duchenne muscular dystrophy (DMD), which is caused by loss of dystrophin. However, the role of MMP-2 in dystrophin-deficient muscle is not well known. The aim of this study was to verify the role of MMP-2 in dystrophin-deficient muscle by using mdx mice with genetic ablation of MMP-2 (mdx/MMP-2-/-). Gene expression profiles were analyzed in the skeletal muscle of mdx and mdx/MMP-2-/- mice at 1 and 3 months of age.
Project description:SILAC based protein correlation profiling using size exclusion of protein complexes derived from Mus musculus tissues (Heart, Liver, Lung, Kidney, Skeletal Muscle, Thymus)
Project description:SILAC based protein correlation profiling using size exclusion of protein complexes derived from seven Mus musculus tissues (Heart, Brain, Liver, Lung, Kidney, Skeletal Muscle, Thymus)
Project description:Muscle (M), myotendinous (J) and tendon (T) tissues were isolated from murine wild-type soleus muscle-tendon units. Tissues were either: 1) fractionated prior to LC-MS/MS analysis of the CS and IN fractions; or 2) homogenized prior to LC-MS/MS analysis of the homogenate. Samples were analyzed by Q Exactive (Thermo Scientific).
Project description:Introgressed variants from other species can be an important source of genetic variation because they may arise rapidly, can include multiple mutations on a single haplotype, and have often been pretested by selection in the species of origin. Although introgressed alleles are generally deleterious, several studies have reported introgression as the source of adaptive alleles-including the rodenticide-resistant variant of Vkorc1 that introgressed from Mus spretus into European populations of Mus musculus domesticus. Here, we conducted bidirectional genome scans to characterize introgressed regions into one wild population of M. spretus from Spain and three wild populations of M. m. domesticus from France, Germany, and Iran. Despite the fact that these species show considerable intrinsic postzygotic reproductive isolation, introgression was observed in all individuals, including in the M. musculus reference genome (GRCm38). Mus spretus individuals had a greater proportion of introgression compared with M. m. domesticus, and within M. m. domesticus, the proportion of introgression decreased with geographic distance from the area of sympatry. Introgression was observed on all autosomes for both species, but not on the X-chromosome in M. m. domesticus, consistent with known X-linked hybrid sterility and inviability genes that have been mapped to the M. spretus X-chromosome. Tract lengths were generally short with a few outliers of up to 2.7 Mb. Interestingly, the longest introgressed tracts were in olfactory receptor regions, and introgressed tracts were significantly enriched for olfactory receptor genes in both species, suggesting that introgression may be a source of functional novelty even between species with high barriers to gene flow.