Project description:mRNA profiling of mouse kidney preglomerular arterioles comparing wild type arterioles vs.arterioles from mice having deletion of RBP-J in cells of the renin lineage We used microarrays to detail the global program of gene expression in wild type and RBP-J conditional knockout (RPB-J cKO) kidney arterioles which revealed upregulation of genes that belong to the immune response system.
Project description:Renin cells are essential for survival. They control the morphogenesis of the kidney arterioles, and the composition and volume of our extracellular fluid, arterial blood pressure, tissue perfusion, and oxygen delivery. Renin cells and associated arteriolar cells descend from FoxD1+ progenitor cells. The chromatin states and transcription factors that determine the differentiation of these cells into those that compose the kidney vasculature are unknown. To answer these questions, we isolated progenitors and their descendants at different embryonic and postnatal stages, and using integrated scRNA-seq and scATAC-seq established the developmental trajectory that leads to the mosaic of cells that compose the kidney arterioles. We constructed a single-cell atlas of chromatin accessibility and gene expression profiles-including the critical transcription factors that determine the identity and fate of the mosaic of cells that occur during kidney vascular development. Furthermore, we identified the factors that determine the elusive, myo-endocrine adult renin-secreting juxtaglomerular cell.
Project description:Renin cells are essential for survival. They control the morphogenesis of the kidney arterioles, and the composition and volume of our extracellular fluid, arterial blood pressure, tissue perfusion, and oxygen delivery. Renin cells and associated arteriolar cells descend from FoxD1+ progenitor cells. The chromatin states and transcription factors that determine the differentiation of these cells into those that compose the kidney vasculature are unknown. To answer these questions, we isolated progenitors and their descendants at different embryonic and postnatal stages, and using integrated scRNA-seq and scATAC-seq established the developmental trajectory that leads to the mosaic of cells that compose the kidney arterioles. We constructed a single-cell atlas of chromatin accessibility and gene expression profiles-including the critical transcription factors that determine the identity and fate of the mosaic of cells that occur during kidney vascular development. Furthermore, we identified the factors that determine the elusive, myo-endocrine adult renin-secreting juxtaglomerular cell.
Project description:mRNA profiling of mouse spleens comparing wild type spleens vs. spleens from mice having deletion of RBP-J in cells of the renin lineage which results in B-cell leukemia We used microarrays to detail the global program of gene expression in wild type and the leukemic spleens which revealed upregulation of genes for cell cycle progression and B cell identity in the leukemic spleens.
Project description:mRNA profiling of mouse spleens comparing wild type spleens vs. spleens from mice having deletion of RBP-J in cells of the renin lineage which results in B-cell leukemia We used microarrays to detail the global program of gene expression in wild type and the leukemic spleens which revealed upregulation of genes for cell cycle progression and B cell identity in the leukemic spleens. Two condition experiment: wild type vs leukemic; biological replicates: individual mice - 2 wild type, 2 mutant. One replicate per array.
Project description:Transcriptional profiling of Sox4cKO, Sox11cKO, or Sox4/11dcKO mouse keratinocytes as compared to their wild-type control keratinocytes, isolated from gender matched neonatal pairs. Goal was to identify the genes differentially expresssed in the conditional knockout keratinocytes vs the wild-type control.
Project description:Renin, a key component in the regulation of blood pressure in mammals, is produced by the rare and highly specialized juxtaglomerular (JG) cells of the kidney. Although these cells line the media of the glomerular afferent arterioles and share some characteristics with contractile cells, they are filled with lysosome-like organelles where renin is activated and stored for regulated secretion in response to physiological and pathophysiological stimuli. Chronic stimulation of renin release results in a recruitment of new JG cells by the seeming conversion of adjacent smooth muscle cells along the afferent arterioles. Because JG cells rapidly de-differentiate when removed from the kidney, their developmental origin and the mechanism that explains their phenotypic plasticity remain largely unclear. In an effort to overcome this limitation, we have performed RNA expression analysis on four human renin-producing tumors. The most highly expressed genes that were common between the reninomas were subsequently used for in situ hybridization in mouse kidney. Our results add 40 new genes to the list that characterize renin-producing cells and reveal a significant variation in the expression patterns of developing, mature and recruited JG cells.
Project description:ChIP-Seq for H3K4me3 and H3K27me3 in wild type spleens and spleens from mice having deletion of RBP-J in cells of the renin lineage, which results in B-cell leukemia. Examination of 2 different histone modifications in wild type and mutant spleens.
Project description:ChIP-Seq for H3K4me3 and H3K27me3 in wild type spleens and spleens from mice having deletion of RBP-J in cells of the renin lineage, which results in B-cell leukemia.
Project description:Transcriptional profiling of mouse E16 epidermis deficient of Sox4, Sox11, or both as compared to gender matched wild type littermate controls. Goal was to identify the genes differentially expresssed in the conditional knockout epidermis vs the wild-type control epidermis.