Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

PFKFB3 drives renal fibrosis through promoting histone lactylation-mediated NF- B activation [RNA-seq]

ABSTRACT: Persistently elevated glycolysis in kidney has been demonstrated to promote chronic kidney disease. However, the underlying mechanism remains largely unclear. Here, we observed that PFKFB3, a key glycolytic enzyme, was remarkably induced in kidney proximal tubular cells following ischemia-reperfusion injury in mice, as well as in multiple etiologies of chronic kidney disease patients. Proximal tubular epithelial-specific deletion of PFKFB3 significantly reduced renal lactate levels, mitigated inflammation and fibrosis, and preserved renal function in the IRI mouse model. To explore the mechanism of PFKFB3 in renal fibrosis, we performed RNA-sequencing (RNA-seq) on the kidney cortices from IRI mice. Of note, we found that PFKFB3-mediated kidney tubular glycolytic reprogramming markedly enhanced H4K12la lactylation. To further explore the potential functional significance of H4K12la in renal fibrosis, we performed genome-wide cleavage under targets and tagmentation (CUT&Tag) analysis to identify candidate genes regulated by H4K12la in sham and IRI kidney. Following CUT&Tag, H4K12la-associated DNAs were amplified using non-biased conditions, labeled, and sequenced with Illumina NovaSeq 6000.

ORGANISM(S): Mus musculus

PROVIDER: GSE266242 | GEO | 2024/05/01

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

PFKFB3 drives renal fibrosis through promoting histone lactylation-mediated NF- B activation [CUT&Tag]

Project description:Persistently elevated glycolysis in kidney has been demonstrated to promote chronic kidney disease. However, the underlying mechanism remains largely unclear. Here, we observed that PFKFB3, a key glycolytic enzyme, was remarkably induced in kidney proximal tubular cells following ischemia-reperfusion injury in mice, as well as in multiple etiologies of chronic kidney disease patients. Proximal tubular epithelial-specific deletion of PFKFB3 significantly reduced renal lactate levels, mitigated inflammation and fibrosis, and preserved renal function in the IRI mouse model. To explore the mechanism of PFKFB3 in renal fibrosis, we performed RNA-sequencing (RNA-seq) on the kidney cortices from IRI mice. Of note, we found that PFKFB3-mediated kidney tubular glycolytic reprogramming markedly enhanced H4K12la lactylation. To further explore the potential functional significance of H4K12la in renal fibrosis, we performed genome-wide cleavage under targets and tagmentation (CUT&Tag) analysis to identify candidate genes regulated by H4K12la in sham and IRI kidney. Following CUT&Tag, H4K12la-associated DNAs were amplified using non-biased conditions, labeled, and sequenced with Illumina NovaSeq 6000.

2024-05-01 | GSE266243 | GEO

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

Transcriptome profile of a murine renal bilateral ischemia reperfusion model 2 hours to 12 months post injury

Project description:Acute kidney injury (AKI) is associated with an increased risk of chronic kidney disease (CKD). To extend our understanding of renal repair, and its limits, we performed a detailed molecular characterization of a murine ischemia reperfusion injury (IRI) model for 12 months post injury. RNA-seq analysis highlights a cascade of temporal specific gene expression patterns related to tubular injury/repair, fibrosis, innate and adaptive immunity.

2017-09-12 | GSE98622 | GEO

Inhibition of prolyl hydroxylase promotes the reprogramming of Sox9+ renal progenitor cells and renal regeneration

Project description:Mammalian kidney has very limited ability to repair or regenerate after acute kidney injury (AKI). The maladaptive repair of AKI promotes the progression to chronic kidney disease (CKD). Therefore, it is extremely urgent to explore new strategies to promote the repair/regeneration of injured renal tubules after AKI. It has been shown that hypoxia induces heart regeneration in adult mice. However, it is unknown whether hypoxia can induce kidney regeneration after AKI. In this study, we used a prolyl hydroxylase domain inhibitor (PHDI), MK-8617, to mimic hypoxia condition and found that MK-8617 significantly ameliorates ischemia reperfusion injury (IRI) induced acute kidney injury. We then showed that MK-8617 dramatically facilitates renal regeneration via promoting the proliferation of injured renal proximal tubular cells (RPTCs) after IRI-induced AKI. We then performed bulk mRNA sequencing and discovered that multiple nephrogenesis- related genes were significantly upregulated with MK-8617 pretreatment. Furthermore, we showed that MK-8617 may alleviate proximal tubule injury via stabilizing HIF-1α protein specifically in renal proximal tubular cells. We also demonstrated that MK-8617 promotes the reprogramming of renal proximal tubular cells to Sox9+ renal progenitor cells, and the regeneration of renal proximal tubules. In summary, we discovered that inhibition of prolyl hydroxylase improves renal proximal tubule regeneration after IRI-induced AKI via promoting the reprogramming of renal proximal tubular cells to Sox9+ renal progenitor cells.

2024-10-10 | GSE247560 | GEO

Genome-wide identification of transcriptional targets for H4K12la in total brain cells and microglia of WT and 5XFAD mice

Project description:In this study, we found that H4K12la level is elevated in plaque-adjacent microglia of 5XFAD mice. To further explore the potential functional significance of H4K12la in AD, we performed genome-wide cleavage under targets and tagmentation (CUT&Tag) analysis to identify candidate genes regulated by H4K12la in total brain cells and microglia. Following CUT&Tag, H4K12la-associated DNAs were amplified using non-biased conditions, labeled, and sequenced with Illumina NovaSeq 150PE.

2022-01-20 | GSE188765 | GEO

Immune-mediated Tubule Atrophy Promotes Acute Kidney Injury to Chronic Kidney Disease Transition

Project description:Incomplete repair after acute kidney injury (AKI) is associated with progressive loss of tubular cell function and development of chronic kidney disease (CKD). Here, we compared the kidney single-cell transcriptomes from the mice subjected to either unilateral ischemia-reperfusion kidney injury with contralateral nephrectomy (IRI/CL-NX, in which tubule repair predominates) or unilateral IRI with contralateral kidney intact (U-IRI, in which fibrosis and atrophy predominates) to investigate the mechanism(s) underlying transition to CKD following AKI.

2022-06-30 | GSE197626 | GEO

The diapause-like colorectal cancer cells induced by SMC4 attenuation are characterized by low proliferation and chemotherapy insensitivity [CUT&TAG]

Project description:CUT-Tag for histone H4K12la in HCT116 cells and its shSMC4.

2022-07-17 | GSE208202 | GEO

DNA-binding protein-A promotes renal ischemia/reperfusion injury and participates in mitochondrial function

Project description:DNA-binding protein-A (DbpA; gene: Ybx3) belongs to the cold shock protein family with known functions in cell cycling, transcription, translation and tight junction communication. In chronic nephritis DbpA is upregulated, however its activities in acute injury models, such as renal ischemia/reperfusion injury (IRI), are unclear. Mice harboring Ybx3+/+, Ybx3+/- or Ybx3-/- genotype were characterized over a period of 24 months and following experimental renal IRI. Mitochondrial function, number and integrity were analyzed by mito stress tests, MitoTracker staining and electron microscopy. Immunohistochemistry, Western blotting and flow cytometry were performed to quantify tubular cell damage and immune cell infiltration. DbpA is dispensable for kidney development and tissue homeostasis under healthy conditions. Furthermore, endogenous DbpA protein localizes within mitochondria in primary tubular epithelial cells (TECs). Genetic deletion of Ybx3 elevates the mitochondrial membrane potential, the lipid uptake and metabolism, the oxygen consumption rates (OCR) and glycolytic activities of TECs. Ybx3-/- mice demonstrate protection from IRI with less immune cell infiltration, ER stress and tubular cell damage. A putative protective mechanism is identified via upregulated antioxidant activities and reduced ferroptosis, when Ybx3 is deleted. Here, experimental evidences reveal DbpA acts as a mitochondrial protein with profound adverse effects on cell metabolism and highlights a protective effect against IRI when Ybx3 is genetically deleted.

2024-04-26 | GSE264448 | GEO

Tubular epithelial NF-κB activity regulates acute ischemic kideny injury [OTT-211009]

Project description:NF-κB is a key regulator of innate and adaptive immunity and is implicated in the pathogenesis of acute kidney injury (AKI). The cell type-specific functions of NF-κB in the kidney are unknown; however, the pathway serves distinct functions in immune and tissue-parenchymal cells. We analyzed tubular epithelial-specific NF-κB signaling in a mouse model of ischemia-reperfusion injury (IRI)-induced AKI. NF-κB reporter activity and nuclear localization of phosphorylated NF-κB subunit p65 analyses in mice revealed widespread NF-κB activation in renal tubular epithelia and in interstitial cells following IRI that peaked at 2-3 days after injury. To genetically antagonize tubular epithelial NF-κB activity, we generated mice expressing the human NF-κB super-repressor IκBα∆N in renal proximal, distal, and collecting duct epithelial cells. These mice were protected from IRI-induced AKI, as indicated by improved renal function, reduced tubular apoptosis, and attenuated neutrophil and macrophage infiltration. Tubular NF-κB-dependent gene expression profiles revealed temporally distinct functional gene clusters for apoptosis, chemotaxis, and morphogenesis. Primary proximal tubular cells isolated from IκBα∆N-expressing mice exposed to hypoxia-mimetic agent cobalt chloride were protected from apoptosis and expressed reduced levels of chemokines. Our results indicate that postischemic NF-κB activation in renal-tubular epithelia aggravates tubular injury and exacerbates a maladaptive inflammatory response.

2016-09-17 | GSE87024 | GEO

Tubular epithelial NF-κB activity regulates acute ischemic kideny injury [130402-EV-EmxdN]

2016-09-17 | GSE87023 | GEO