Project description:Lamin B1 ChIP-seq analysis of microdissected whole hearts from E9.5 and E12.5 CD1 embryos. Results provide insight into in vivo genome-nuclear lamina interactions over the course of embryonic development. Progenitor cells require coordinated expression of lineage-specific genes to regulate differentiation into daughter cell types. Epigenetic regulators are ideally positioned to synchronize transcription of disparate genomic loci. Using cardiac development to model progenitor cell behavior, we map genome- lamina interactions in vivo to reveal dynamic changes during cardiac development and propose that Hdac3 mediates chromatin organization and gene positioning in cardiac progenitors to regulate fate decisions.
Project description:Purpose: The goals of this study are to characterize and analyze the emrbyonic heart transcriptome profiling (RNA-seq) at E9.5, E10.5, E12.5, E14.5 and E16.5. Methods: mRNA profiles of E9.5, E10.5, E12.5, E14.5 and E16.5 C57/Bl6 mouse embryonic hearts were generated by deep sequencing, n=3 or 4 for each age, using Illumina HiSeq2500. Results: Using an optimized data analysis workflow, we mapped at least 36 million sequence reads per sample to the mouse genome (build mm10) and identified 17,537 transcripts in the mouse hearts.
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: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.