Label-free quantitative proteomics for mouse kidney tissue of unilateral ureteral obstruction (UUO) vs Sham.
Ontology highlight
ABSTRACT:
INSTRUMENT(S): Q Exactive Plus
ORGANISM(S): Mus Musculus (mouse)
TISSUE(S): Kidney
SUBMITTER: 
Wei Zhou
LAB HEAD: Wei Zhou
PROVIDER: PXD029310 | Pride | 2022-09-30
REPOSITORIES: Pride
Dataset's files
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Project description:Significant renal fibrosis and a significant increase in serum creatinine were observed in AC model mice and UUO model mice, and the same pattern of fibrosis was observed in the cortex and medulla. Compared with sham operation, RNA-Seq detected circRNAs that were differentially expressed in the two models.
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Project description:INTRODUCTION AND OBJECTIVE: Loss of renal function is often the impetus for operative intervention in renal obstruction. Obstructive nephropathy is characterized discrete morphological and physiologic changes including tubular dilatation, apoptosis, and atrophy, as well as interstitial cellular infiltration and progressive interstitial fibrosis. We hypothesize that there are gene expression alterations correlated with obstructive nephropathy that could serve as biomarkers for early intervention. METHODS: C57BL/6 mice were subjected to Unilateral Urethral Obstruction (UUO) or sham surgery at postnatal day 21 of life, and kidneys were harvested after 1, 2, 5 and 9 days postoperatively. RNA was extracted from kidneys and comprehensive gene expression profiling was performed with Agilent microarrays. We used biological replicates: 13 UUO replicates, 9 sham replicates. 2-Channel microarrays were hybridized using universal reference in the Cy3 channel. Ingenuity pathway analysis was used to analyze the biological function and gene networks of gene expression data. RESULTS: Microarray analysis revealed more than 1800 transcripts that were up- or down-regulated over days 1 through 9 following obstruction, and included many transcripts reported previously (FOS, CD44, CLU, SPP1 and EGF). Pathway analysis revealed significant enrichment of transcripts in cell activation/differentiation, immune/inflammatory responses, cell cycle, metabolic process and transport. Interestingly, IPA network analysis showed that transcriptional regulatory pathway involving CEBPB/HNF4A is involved in obstructive nephropathy. CONCLUSIONS: Transcript profiling identified numerous gene expression changes following UUO and suggests a role for CEBPB/HNF4A pathway in obstructive nephropathy. This dataset provides a foundation for development of biomarkers for obstructive nephropathy. Time: day samples were collected post operation Somatic Modification: mice were operated on to generate urethral obstruction (Obstructed/Control) time_series_design
2012-11-01 | E-GEOD-36496 | biostudies-arrayexpress
Project description:RNA-sequencing of mouse left kidneys for which the left ureter was obstructed (UUO) or not obstructed (sham) animals, isolated 7 days after the surgery in normal mice and mice in which the Kdm6a gene was deleted from tubule epithelial cells
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Project description:Obstructive nephropathy (ON) is a common clinical entity caused by different etiologies such as urolithiasis, prostatic hyperplasia in males, tumors, congenital stenosis, and others. Unilateral ureteral obstruction (UUO) in rodents is an experimental model widely used to explore the pathophysiology of ON, replicating vascular alterations, tubular atrophy, inflammation, and fibrosis development. On the other hand, mitochondria have been the subject of great attention, as morphological and functional alterations have been demonstrated in kidney diseases. Therefore, in this study, we explored the differences of the renal mitochondrial proteome during a time-course of 7, 14, and 21 days after the UUO in a rat model; and subsequently performed an overrepresentation analysis of biological processes to gain insight into the most relevant mitochondrial processes during UUO. We first isolated mitochondria from each UUO group and the control (sham) group, then the mitochondria were lysed in lysis buffer (8 M Urea, 20 mM HEPES, 1mM EDTA, pH 8.0) and digested using iST Sample Preparation Kit®. Peptides were separated using a UHPLC ACQUITY M-Class. Spectral data were acquired in an MS with electrospray ionization and ion mobility separation Synapt G2-Si operated with data-independent acquisition and ion mobility spectrometry in HDMSE mode. A total of 954 proteins were identified and quantified by label-free with Progenesis QI software and the database UP000002494 . Subsequently, after cross-checking with the MitoMiner database, we were left with 379 mitochondrial or mitochondrial transit proteins. Then, only proteins that had abundance values in at least 50% of the samples per study group and did not show atypical abundance values were selected, thus conserving 308 mitochondrial proteins for principal component analysis (PCA). PCA showed that 11 components can explain the total variation in protein abundance among samples and that the first two components can differentiate between the control group (sham) and the UUO groups. Considering the results obtained from the PCA analysis, a heat map was constructed with 243 proteins that strongly correlated (r ≤ -0.5 or r ≥ 0.5) with the first two principal components. The results show the abundance patterns for each UUO day and for the sham group and that these proteins are mainly involved in three metabolic pathways, oxidative phosphorylation (OXPHOS), the tricarboxylic acid cycle (TCA), and fatty acid (FA) metabolism.
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Project description:Renal fibrosis is a common consequence of various progressive nephropathies, including obstructive nephropathy, and ultimately leads to kidney failure. Infiltration of inflammatory cells is a prominent feature of renal injury after draining blockages from the kidney, and correlates closely with the development of renal fibrosis. However, the underlying molecular mechanism behind the promotion of renal fibrosis by inflammatory cells remains unclear. Herein, we showed that unilateral ureteral obstruction (UUO) induced Gasdermin D (GSDMD) activation in neutrophils, abundant neutrophil extracellular traps (NETs) formation and macrophage-to-myofibroblast transition (MMT) characterized by α-smooth muscle actin (α-SMA) expression in macrophages. Gsdmd deletion significantly reduced infiltration of inflammatory cells in the kidneys and inhibited NETs formation, MMT and thereby renal fibrosis. Chimera studies confirmed that Gsdmd deletion in bone marrow-derived cells, instead of renal parenchymal cells, provided protection against renal fibrosis. Further, specific deletion of Gsdmd in neutrophils instead of macrophages protected the kidney from undergoing fibrosis after UUO. Single-cell RNA sequencing identified robust crosstalk between neutrophils and macrophages. In vitro, GSDMD-dependent NETs triggered p65 translocation to the nucleus, which boosted the production of inflammatory cytokines and α-SMA expression in macrophages by activating TGF-β1/Smad pathway. In addition, we demonstrated that caspase-11, that could cleave GSDMD, was required for NETs formation and renal fibrosis after UUO. Collectively, our findings demonstrate that caspase-11/GSDMD-dependent NETs promote renal fibrosis by facilitating inflammation and MMT, therefore highlighting the role and mechanisms of NETs in renal fibrosis.
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Project description:Treatments for kidney fibrosis represent an urgent yet unmet clinical need. Effective therapies are limited due to not well understood molecular pathogenesis. We aimed at generating a comprehensive and integrated multi-omics data set (RNA/ microRNA transcriptomics and proteomics) of fibrotic kidneys which will be searchable through a user-friendly web application. Therefore, two commonly used mouse models were utilized: a reversible chemical-induced injury model (folic acid (FA) induced nephropathy) and an irreversible surgical-induced fibrosis model (unilateral ureteral obstruction (UUO)). RNA and small RNA sequencing as well as MS/MS with 10-plex tandem mass tags proteomics were performed with kidney samples from different time points over the course of fibrosis development. In summary, we present temporal and integrated multi-omics data from fibrotic mouse kidneys which are accessible through an interrogation tool to provide a searchable transcriptome and proteome for kidney fibrosis researcher.
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Project description:INTRODUCTION AND OBJECTIVE: Loss of renal function is often the impetus for operative intervention in renal obstruction. Obstructive nephropathy is characterized discrete morphological and physiologic changes including tubular dilatation, apoptosis, and atrophy, as well as interstitial cellular infiltration and progressive interstitial fibrosis. We hypothesize that there are gene expression alterations correlated with obstructive nephropathy that could serve as biomarkers for early intervention. METHODS: C57BL/6 mice were subjected to Unilateral Urethral Obstruction (UUO) or sham surgery at postnatal day 21 of life, and kidneys were harvested after 1, 2, 5 and 9 days postoperatively. RNA was extracted from kidneys and comprehensive gene expression profiling was performed with Agilent microarrays. We used biological replicates: 13 UUO replicates, 9 sham replicates. 2-Channel microarrays were hybridized using universal reference in the Cy3 channel. Ingenuity pathway analysis was used to analyze the biological function and gene networks of gene expression data. RESULTS: Microarray analysis revealed more than 1800 transcripts that were up- or down-regulated over days 1 through 9 following obstruction, and included many transcripts reported previously (FOS, CD44, CLU, SPP1 and EGF). Pathway analysis revealed significant enrichment of transcripts in cell activation/differentiation, immune/inflammatory responses, cell cycle, metabolic process and transport. Interestingly, IPA network analysis showed that transcriptional regulatory pathway involving CEBPB/HNF4A is involved in obstructive nephropathy. CONCLUSIONS: Transcript profiling identified numerous gene expression changes following UUO and suggests a role for CEBPB/HNF4A pathway in obstructive nephropathy. This dataset provides a foundation for development of biomarkers for obstructive nephropathy. Time: day samples were collected post operation Somatic Modification: mice were operated on to generate urethral obstruction (Obstructed/Control)
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