Project description:We report the application of single molecule-based sequencing technology for high-throughput mapping of CFP1, RNA polymerase II and H3K4me3 in mouse brain. By obtaining sequence from chromatin immunoprecipitated DNA, we generated genome-wide binding / chromatin-state maps for mouse brain. We find a good correlation between CFP1 binding and H3K4me3 consistent with it presence in the SetD1 histone methylatransferase complex. Mapped RNA polymerase II colocalised with the majority of CFP1 / H3K4me3 positive CpG islands but not all. This study provides a comprehensive characterisation of the genome wide distribution of a previously uncharacaterised DNA binding factor and suggests a link between DNA base composition and chromatin state. Examination of H3K4me3, RNA PolymeraseII and CFP1 in mouse brain.
Project description:Transcriptional profiling of mouse brain voxels from a single coronal slice of the mouse brain comparing each voxel to whole mouse brain RNA. Goal was to determine the gene expression profiles for the mouse genome in a coronal slice of the mouse brain. Keywords: Genetic modification
Project description:To understand the complexity of the brain, connectome and transcriptome maps of high resolution are being generated, but an equivalent catalogue of the brain proteome is lacking. To provide a starting point, we have performed an in-depth proteome analysis of the adult mouse brain, its major regions and cell types, which resulted in the so far largest collection of cell-type resolved protein expression data of the brain. Comparisons of the 12,934 identified proteins in oligodendrocytes, astrocytes, microglia and cortical neurons with deep sequencing data of the transcriptome indicated deep coverage of the proteome. We identified novel protein makers for different cell type and brain regions. These were validated either directly such as in case of cell types or by comparative analysis against Allen mouse brain atlas. The utility and the power of the resource were demonstrated by the identification of Lsamp, an adhesion molecule of the IgLON family, as a negative regulator of myelination in a subpopulation of neurons. Our in-depth proteome analysis of CNS cell types provides a framework towards a system-level understanding of cell type diversity in the CNS and serves as a rich resource to the neuroscience community for the better understanding of brain development and function.
Project description:To understand the complexity of the brain, connectome and transcriptome maps of high resolution are being generated, but an equivalent catalogue of the brain proteome is lacking. To provide a starting point, we have performed an in-depth proteome analysis of the adult mouse brain, its major regions and cell types, which resulted in the so far largest collection of cell-type resolved protein expression data of the brain. Comparisons of the 12,934 identified proteins in oligodendrocytes, astrocytes, microglia and cortical neurons with deep sequencing data of the transcriptome indicated deep coverage of the proteome. We identified novel protein makers for different cell type and brain regions. These were validated either directly such as in case of cell types or by comparative analysis against Allen mouse brain atlas. The utility and the power of the resource were demonstrated by the identification of Lsamp, an adhesion molecule of the IgLON family, as a negative regulator of myelination in a subpopulation of neurons. Our in-depth proteome analysis of CNS cell types provides a framework towards a system-level understanding of cell type diversity in the CNS and serves as a rich resource to the neuroscience community for the better understanding of brain development and function.