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Lysosomal protein transmembrane 5 driving senescence in tubular epithelial cells accelerates chronic kidney disease progression.

ABSTRACT: Cellular senescence is associated with the progression of chronic kidney disease (CKD), and accelerated tubular cell senescence promotes the pathogenesis of renal fibrosis. We established three animal models related to Chronic Kidney Disease, including aristolochic acid nephropathy (AAN), bilateral ischemia/reperfusion injury (BIRI) and unilateral ureter obstruction (UUO). By RNA sequencing analysis in AAN, BIRI and UUO mice, we observed significant changes of senescence and fibrosis related genes.

ORGANISM(S): Mus musculus

PROVIDER: GSE254440 | GEO | 2024/02/03

REPOSITORIES: GEO

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Single-Nucleus RNA Sequencing Identifies New Classes of Proximal Tubular Epithelial Cells in Kidney Fibrosis

Project description:The study used a clinically relevant mouse model of chronic aristolochic acid nephropathy (AAN) to investigate the responses of proximal tubular cells during kidney fibrosis by single-nucleus RNA sequencing. The experiment involved 4 mice with AAN induced chronic renal fibrosis and 4 naive controls.

2021-06-23 | E-MTAB-9390 | biostudies-arrayexpress

HDAC9-mediated Epithelial Cell Cycle Arrest in G2/M Contributes to Kidney Fibrosis

Project description:Renal tubulointerstitial fibrosis is the pathological feature of AAN. Aristolochic acid nephropathy (AAN)was induced by a one-time intraperitoneal injection of aristolochic acid in PBS. By RNA sequencing analysis in AAN mice, we observed the significant changes of genes important in regulating cell cycle.

2022-11-10 | GSE217176 | GEO

Tight Junction Claudins-associated vascular heterogeneity determines organotypic metastasis

Project description:To identify the underlying mechanisms associated with lung and kidney fibrosis inducing lung metastasis, we evaluated global transcriptomic changes in healthy lung, fibrotic lung fibrosis, and lung from mice with kidney fibrosis. Results provide information on the vascular remodeling of the lungs with organ fibrosis. Lung fibrosis is induced with intratracheal bleomycin administration. Kidney fibrosis is induced by unilateral ureter obstruction (UUO).

2024-04-19 | GSE199178 | GEO

Genome-wide analysis of gene expression in normal and fibrotic mouse kidneys and normal and fibrotic mouse lungs

Project description:In this study, adult virgin female BALB/C mice were kidney and lungs were harvested for RNA extraction (healthy kidney and lung). Adult virgin female BALB/C mice were subjected to unilateral ureter obstruction (UUO) to induce kidney fibrosis and the fibrotic kidney was harvested for RNA extraction. Adult virgin female BALB/C mice were subjected to intratracheal administration of bleomycine to induce lung fibrosis and the fibrotic lungs was harvested for RNA extraction.

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PFKFB3-mediated glycolysis boosts fibroblast activation and subsequent kidney fibrosis

Project description:<p>Renal fibrosis, a hallmark of chronic kidney diseases, is driven by the activation of renal fibroblasts. Recent studies have highlighted the role of glycolysis in this process. Nevertheless, one critical glycolytic activator, 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3 (PFKFB3), remains unexplored in renal fibrosis. Upon reanalyzing the single-cell sequencing data from Dr. Humphreys' lab, we noticed an upregulation of glycolysis, gluconeogenesis, and TGFβ signaling pathway in myofibroblasts from fibrotic kidneys after unilateral ureter obstruction (UUO) or kidney ischemia/reperfusion. Furthermore, our experiments showed significant induction of PFKFB3 in mouse kidneys following UUO or kidney ischemia/reperfusion. To delve deeper into the role of PFKFB3, we generated mice with Pfkfb3 deficiency specifically in myofibroblasts (Pfkfb3f/fPostnMCM). Following UUO or kidney ischemia/reperfusion, a substantial decrease of fibrosis in injured kidneys of Pfkfb3f/fPostnMCM mice was identified compared to their wild-type littermates. Additionally, in cultured renal fibroblast NRK-49F cells, PFKFB3 was elevated upon exposure to TGFβ1, accompanied by the increase of α-SMA and fibronectin. Notably, this upregulation was significantly diminished with PFKFB3 knockdown, correlated with a glycolysis suppression. Mechanistically, the glycolytic metabolite lactate promoted the fibrotic activation of NRK-49F. In conclusion, our study demonstrates the critical role of PFKFB3 in driving fibroblast activation and subsequent renal fibrosis.</p>

2024-03-12 | MTBLS8281 | MetaboLights

miR-132 mediates renal fibrosis: Genome-wide analysis of gene expression in foxd1-derivative interstital cells derived from fibrotic kidneys from mice treated with antagomir-132 or scramblemir

Project description:Chronic kidney disease is associated with progressive renal fibrosis, where perivascular cells give rise to the majority of Î±-SMA positive myofibroblasts. We sought to identify pericytic miRNAs that could serve as a target to decrease myofibroblast formation. We induced kidney fibrosis in FoxD1-GC;Z/Red-mice by unilateral ureteral obstruction (UUO) followed by FACS sorting of dsRed-positive FoxD1-derivative cells and miRNA profiling. MiR-132 selectively increased 21-fold during pericyte-to-myofibroblast formation whereas miR-132 was only 2.5-fold up in total kidney lysates (both in UUO and ischemia-reperfusion injury). MiR-132 silencing in UUO decreased collagen deposition (35%) and tubular apoptosis. Immunohistochemistry, western blot and qRT-PCR confirmed a similar decrease in interstitial Î±-SMA+ cells. Pathway analysis identified a rate-limiting role for miR-132 in myofibroblast proliferation that was confirmed in vitro. Indeed, antagomir-132 treated mice displayed a reduction in the number of proliferating, ki67+ interstitial myofibroblasts. Interestingly, this was selective for the interstitial compartment and did not impair the reparative proliferation of tubular epithelial cells, as evidenced by an increase in ki67+ epithelial cells, as well as increased (p-)RB1, Cyclin-A and decreased RASA1, p21 levels in kidney lysates. Taken together, silencing miR-132 counteracts the progression of renal fibrosis by selectively decreasing myofibroblast proliferation and could potentially serve as a novel antifibrotic therapy. Total RNA obtained from FACS sorted mouse renal FoxD1-derivatve interstitial cells from mice that were treated with antagomir-132 or scramblemir and underwent UUO (n=4)

2016-02-16 | E-GEOD-76548 | biostudies-arrayexpress

miR-132 mediates renal fibrosis: miRNA profiling of foxd1-derivative interstital cells derived from murine fibrotic kidneys compared to healthy kidneys

Project description:Chronic kidney disease is associated with progressive renal fibrosis, where perivascular cells give rise to the majority of Î±-SMA positive myofibroblasts. We sought to identify pericytic miRNAs that could serve as a target to decrease myofibroblast formation. We induced kidney fibrosis in FoxD1-GC;Z/Red-mice by unilateral ureteral obstruction (UUO) followed by FACS sorting of dsRed-positive FoxD1-derivative cells and miRNA profiling. MiR-132 selectively increased 21-fold during pericyte-to-myofibroblast formation whereas miR-132 was only 2.5-fold up in total kidney lysates (both in UUO and ischemia-reperfusion injury). MiR-132 silencing in UUO decreased collagen deposition (35%) and tubular apoptosis. Immunohistochemistry, western blot and qRT-PCR confirmed a similar decrease in interstitial Î±-SMA+ cells. Pathway analysis identified a rate-limiting role for miR-132 in myofibroblast proliferation that was confirmed in vitro. Indeed, antagomir-132 treated mice displayed a reduction in the number of proliferating, ki67+ interstitial myofibroblasts. Interestingly, this was selective for the interstitial compartment and did not impair the reparative proliferation of tubular epithelial cells, as evidenced by an increase in ki67+ epithelial cells, as well as increased (p-)RB1, Cyclin-A and decreased RASA1, p21 levels in kidney lysates. Taken together, silencing miR-132 counteracts the progression of renal fibrosis by selectively decreasing myofibroblast proliferation and could potentially serve as a novel antifibrotic therapy. Total RNA obtained from FACS sorted mouse FoxD1-derivative interstitial cells from healthy or fibrotic kidneys

2016-02-16 | E-GEOD-76549 | biostudies-arrayexpress

Exploring new pathways involved during experimental renal fibrogenesis in the Unilateral Ureteral Obstruction

Project description:Chronic kidney disease (CKD) is a burden for Public Health and concerns millions of individuals worldwide. Independently of the cause, CKD is secondary to the replacement of functional renal tissue by extra-cellular matrix proteins (i.e fibrosis) that progressively impairs kidney function. The pathophysiological pathways that control the development of renal fibrosis are common to most of the nephropathies involving native kidneys or kidney grafts. Unfortunately, very few treatments are available to stop renal fibrosis and most of the therapeutic strategies are often barely able to slow down the progression of fibrogenesis in native kidneys. Therefore, it is mandatory to discover new therapeutic pathways to stop renal fibrosis. Our objective is to study new pathways involved in renal fibrosis. We thus decided to use the model of Unilateral Ureteral renal Obstruction in mice, a fast and reproducible experimental model of renal fibrosis. We studied renal fibrosis using experimental model of ureteral unilateral obstruction in mice, which was performed by complete ligation of the left ureter. The control lateral right kidney served as internal control.

2013-02-10 | E-GEOD-38117 | biostudies-arrayexpress

Sprr2f protects against renal injury by decreasing the level of reactive oxygen species in female mice

Project description:Renal injury leads to chronic kidney disease for which women are not only more likely to be diagnosed with than men but also have poorer outcomes as well. We have previously shown that expression of Sprr2f, a member of the Small Proline Rich Region (Sprr) gene family, is increased several hundred fold after renal injury using a unilateral ureter obstruction (UUO) mouse model. To better understand the role of Sprr2f in renal injury, we generated a Sprr2f knockout (Sprr2f-KO) mouse model using CRISPR-Cas9 technology. To identify genes that are differentially expressed in Sprrf2f-KO mice after UUO, we performed gene expression profiling by RNA-seq on kidney tissues harvested from Sprr2f-KO mice at time 0 (n=4) and after 5 days (n=3), a time known to show dramatic changes in gene expression. Compared to day 0, expression levels of 162 genes were significantly changes with 121 up-regulated and 41 down-regulated 5 days after obstruction. Enrichment analysis using PANTHER Classification System identified 12 and 2 pathways enriched in genes that are upregulated or downregulated after UUO respectively. Eleven out of the 12 pathways enriched in the genes upregulated after UUO are related to metabolism such as drug metabolic process, consistent with a profound role of kidney as a major clearance organ of the body responsible for the elimination of many xenobiotics and prescription drugs. Interestingly, the only pathway not related to metabolism enriched in genes upregulated by UUO is oxidation-reduction, suggesting a potential role of oxidative stress in renal damage after UUO in Sprr2-KO animals. This phenotype is not observed in Sprr2f-WT animals after UUO in our previous gene expression profiling study, suggesting that Sprr2f function is sufficient to protect kidney from oxidative damage after UUO in Sprr2f-WT animals.

2020-10-13 | GSE153010 | GEO

Novel targets in renal fibrosis based on bioinformatic analysis II

Project description:Renal fibrosis is a widely used pathological indicator of progressive chronic kidney disease (CKD), and renal fibrosis mediates most progressive renal diseases as a final pathway. Nevertheless, the key genes related to the host response are still unclear. In this study, the potential gene network, signaling pathways, and key genes under UUO model in mouse kidneys were investigated by integrating two transcriptional data profiles.

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