Project description:The aim of this study is to establish a comprehensive transcriptome atlas that enables identification of key molecular pathways and morphogenic events regulating postnatal renal medulla/papillary and cortex development. To achieve this, a microarray expression profiling was performed on postnatal day 0-90 renal medulla and cortex obtained from CD1 male mice.
Project description:The aim of this study is to establish a comprehensive transcriptome atlas that enables identification of key molecular pathways and morphogenic events regulating postnatal renal medulla/papillary and cortex development. To achieve this, a microarray expression profiling was performed on postnatal day 0-90 renal medulla and cortex obtained from CD1 male mice. Renal medulla and cortex were regionally dissected from postnatal day 0-90 CD1 male mice, and total RNA extracted for microarray expression profiling. Each time point consists of RNA pooled from 4 biological replicates, and an Agilent Bioanalyser test was performed to assess RNA integrity prior to sample pooling. The microarray data was analysed with the use of lumi and limma packages (Bioconductor) in R.
Project description:Comparison between renal papilla tissue with and without the presence of calcified Randall’s plaques, and between the papilla, medulla, and cortex regions from within a single recurrent stone forming kidney demonstrated that patterns of gene expression between the papilla, medulla, and cortex that distinguished these three regions from one another. Disease and function analysis of these gene sets demonstrated up-regulation of genes related to urinary/renal disorders, granulocyte response, vascular smooth muscle cell proliferation, dehydration, and renal calcification and down-regulation of genes related to carboxylic acid/ lipid/ fatty acid transport and urine osmolality.
Project description:This SuperSeries is composed of the following subset Series: GSE28283: Renal cortex microRNA expression differences between hypertensive and normotensive patients GSE28344: Renal medulla microRNA expression differences between hypertensive and normotensive patients GSE28345: Renal cortex expression differences between hypertensive and normotensive patients GSE28360: Renal medulla expression differences between hypertensive and normotensive patients Refer to individual Series
Project description:PURPOSE: To provide a detailed gene expression profile of the normal postnatal mouse cornea. METHODS: Serial analysis of gene expression (SAGE) was performed on postnatal day (PN)9 and adult mouse (6 week) total corneas. The expression of selected genes was analyzed by in situ hybridization. RESULTS: A total of 64,272 PN9 and 62,206 adult tags were sequenced. Mouse corneal transcriptomes are composed of at least 19,544 and 18,509 unique mRNAs, respectively. One third of the unique tags were expressed at both stages, whereas a third was identified exclusively in PN9 or adult corneas. Three hundred thirty-four PN9 and 339 adult tags were enriched more than fivefold over other published nonocular libraries. Abundant transcripts were associated with metabolic functions, redox activities, and barrier integrity. Three members of the Ly-6/uPAR family whose functions are unknown in the cornea constitute more than 1% of the total mRNA. Aquaporin 5, epithelial membrane protein and glutathione-S-transferase (GST) omega-1, and GST alpha-4 mRNAs were preferentially expressed in distinct corneal epithelial layers, providing new markers for stratification. More than 200 tags were differentially expressed, of which 25 mediate transcription. CONCLUSIONS: In addition to providing a detailed profile of expressed genes in the PN9 and mature mouse cornea, the present SAGE data demonstrate dynamic changes in gene expression after eye opening and provide new probes for exploring corneal epithelial cell stratification, development, and function and for exploring the intricate relationship between programmed and environmentally induced gene expression in the cornea. Keywords: other
Project description:Renal dendritic cells play key roles in renal homeostasis and during kidney allograft rejection. Microarray analysis aims to evaluate whether dendritic cells modulate their gene expression profile in relation to their distribution in the different renal compartments (with varying biophysical characteristics), under homeostatic conditions and during acute renal allograft rejection (3 days post-transplantation). Renal dendritic cells from homeostatic (healthy) kidneys and donor/host dendritic cells from renal allografts (3 days post-kidney transplantation) were isolated from cortex and medulla, through fluorescence-activated cell sorting (FACS). Total RNA was isolated from FACS-sorted cells and amplified. The cDNA product was fragmented, biotin-labeled and hybridized on Affimetrix arrays.
Project description:We examined Na-dependent changes in gene expression in the renal papilla and heart ventricle of rats. Animals were conditioned with control or low-Na diets for 1 week. RNA isolated from kidneys or hearts was analyzed by RNAseq. In the renal papilla, notable genes upregulated in response to low dietary Na included alpha, betta, and gamma subunits of ENaC, alpha and beta subunits of the Na/K-ATPase, and the transcription factor Zbtb16. Increases in mRNA for the ENaC were confirmed using qPCR and were strongly dependent on location within the kidney with papilla > outer medulla > cortex. Differences in ENaC protein expression exhibited a similar dependence on location. The effects of dietary Na+ on ENaC expression, as well as that of Zbtb16, in the papillae were not mimicked by treatment with aldosterone, indicating that other factors contribute to the adaptation to Na+ deprivation. In the heart, a smaller number of genes were affected by dietary Na+. Effects clearly related to Na+ balance included downregulation of transcripts for the natriuretic peptides ANP and BNP. Enrichment analyses indicated that low dietary Na led to upregulation of many Gene Ontology (GO) gene sets related to growth and development in the kidney samples, but downregulation of such gene sets in the heart. Our results illustrate the profound site- and tissue-specific effects of changes in dietary Na+ on renal and cardiac gene expression and regulation of salt balance.