Transient upregulation of EGR1 signaling enhances kidney repair by activating SOX9+ renal tubular cells
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ABSTRACT:
PROVIDER: PRJNA731663 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR14611373_1.fastq.gz | Fastqsanger.gz | |||
| SRR14611373_2.fastq.gz | Fastqsanger.gz | |||
| SRR14611374_1.fastq.gz | Fastqsanger.gz | |||
| SRR14611374_2.fastq.gz | Fastqsanger.gz | |||
| SRR14611375_1.fastq.gz | Fastqsanger.gz |
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Project description:Background: Acute kidney injury (AKI) is associated with damage to the nephrons and tubular epithelial cells (TECs), which can lead to chronic kidney disease and end-stage renal disease. Identifying new biomarkers before kidney dysfunction will offer crucial insight into preventive and therapeutic options for the treatment of AKI. Early growth response 1 (EGR1) has been found to be a pioneer transcription factor that can sequentially turn on/off key downstream genes to regulate whole-body regeneration processes in the leopard worm. Whether EGR1 modulates renal regeneration processes in AKI remains to be elucidated. Methods: AKI models of ischemia-reperfusion injury (IRI) and folic acid (FA) were developed to investigate the roles of EGR1 in kidney injury and regeneration. To further determine the function of EGR1, Egr1-/- mice were applied. Furthermore, RNA sequencing of renal TECs, Chromatin Immunoprecipitation (ChIP) assay, and Dual-luciferase reporter assay were carried out to investigate whether EGR1 affects the expression of SOX9. Results: EGR1 is highly expressed in the kidney after AKI both in humans and mice through analysis of the Gene Expression Omnibus (GEO) database. Furthermore, we verified that EGR1 rapidly up-regulates in the very early stage of IRI and nephrotoxic models of AKI, and validation studies confirmed the essential roles of EGR1 in renal tubular cell regeneration. Further experiments affirmed that genetic inhibition of Egr1 aggravates the severity of AKI in mouse models. Furthermore, our results revealed that EGR1 could increase SOX9 expression in renal TECs by directly binding to the promoter of the Sox9 gene, thus promoting SOX9+ cell proliferation by activating the Wnt/β-catenin pathway. Conclusions: Together, our results demonstrated that rapid and transient induction of EGR1 plays a renoprotective role in AKI, which highlights the prospects of using EGR1 as a potential therapeutic target for the treatment of AKI.
| S-EPMC9330523 | biostudies-literature
Project description:This SuperSeries is composed of the SubSeries listed below.
2022-12-19 | GSE174812 | GEO
Project description:The Role of EGR1 in hypoxia/reoxygenation (H/R) injuried mice primary renal tubular epithelial cells Purpose: we performed comparative RNA-seq analyses to identify differentially expressed genes between Knockdown of Egr1 and negtive control in hypoxia/reoxygenation (H/R) injuried mice primary renal tubular epithelial cells. Methods:we grew mouse primary renal tubular epithelial cells to approximately 50% confluence, transfected using EndoFectin™ Max (GeneCopoeia, China). H/R was used to mimic IRI in vitro. Briefly, cells were incubated in glucose-free medium in a tri-gas incubator (94% N2, 5% CO2 and 1.0% O2) at 37 °C for 6 hours. Subsequently, cells were incubated in complete medium under normal conditions for 18 hours for reoxygenation. Cells were then collected by 1ml TRIzol (Invitrogen, Carlsbad), and sent to Annoroad Corporation (Beijing, China) for high throughout Illumina NovaSeq 6000 sequencing (GPL24247) (Illumina, San Diego, CA, USA). Results: To determine the possible pathways and downregulated genes of Egr1 in protecting mice primary renal tubular epithelial cells from injury, we conduct the transcriptomotic sequencing. After sequence, the clean reads rate of all samples were ≥98%.The quality of the assembled transcriptome is good enough for functional annotation and further analysis. Conclusions: We performed RNA-sequencing (RNA-Seq) on isolated mouse renal tubular epithelial cells of 3 groups, negtive control(Sham group) treated with H/R (H/R group) or Egr1 overexpression plasmid (Egr1OV group). Egr1-responsive genes showed significant enrichment in proliferation pathway.
2022-12-19 | GSE174808 | GEO
Project description:The Role of SOX9 in hypoxia/reoxygenation (H/R) injuried mice primary renal tubular epithelial cells Purpose: we performed comparative RNA-seq analyses to identify differentially expressed genes between Knockdown of Sox9 and negtive control in hypoxia/reoxygenation (H/R) injuried mice primary renal tubular epithelial cells. Methods:we grew mouse primary renal tubular epithelial cells to approximately 50% confluence, transfected using EndoFectin™ Max (GeneCopoeia, China) 12h before suffering to H/R injury. H/R was used to mimic IRI in vitro. Briefly, cells were incubated in glucose-free medium in a tri-gas incubator (94% N2, 5% CO2 and 1.0% O2) at 37 °C for 6 hours. Subsequently, cells were incubated in complete medium under normal conditions for 18 hours for reoxygenation. Cells were then collected by 1ml TRIzol (Invitrogen, Carlsbad), and sent to Annoroad Corporation (Beijing, China) for high throughout Illumina NovaSeq 6000 sequencing (GPL24247) (Illumina, San Diego, CA, USA). Results: To determine the possible pathways of Sox9 in protecting mice primary renal tubular epithelial cells from injury, we conduct the transcriptomotic sequencing. After sequence, the clean reads rate of all samples were ≥98%.The quality of the assembled transcriptome is good enough for functional annotation and further analysis. Conclusions: We performed RNA-sequencing (RNA-Seq) on isolated mouse renal tubular epithelial cells of two groups, treated with H/R and transfected with siNC (H/R+siNC group) or siSox9 (H/R+siSox9 group). SOX9-responsive genes showed significant enrichment of the WNT signaling pathway in primary tubular epithelial cells.
2022-12-19 | GSE174811 | GEO
Project description:Acute kidney injury (AKI) is a common clinical condition associated with diverse etiologies and abrupt loss of renal function. In patients with sepsis, rhabdomyolysis, cancer, as well as cardiovascular disorders, the underlying disease or associated therapeutic interventions can cause hypoxic, cytotoxic, and inflammatory insults to renal tubular epithelial cells (RTECs) resulting in the onset of AKI. To uncover stress-responsive disease-modifying genes, here we have carried out renal transcriptome profiling in three distinct murine models of AKI. We find that Vgf nerve growth factor inducible gene upregulation is a common transcriptional stress response in RTECs to ischemia, cisplatin, and rhabdomyolysis-associated renal injury. The Vgf gene encodes a secretory peptide precursor protein that has critical neuro-endocrine functions; however, its role in the kidneys remains unknown. Our functional studies show that RTEC-specific Vgf gene ablation exacerbates ischemia, cisplatin, and rhabdomyolysis-associated AKI in vivo and cisplatin-induced RTEC cell death in vitro. Importantly, addback experiments showed that aggravation of cisplatin-induced renal injury caused by Vgf gene ablation is partly reversed by TLQP-21, a Vgf-derived peptide. Finally, in vitro and in vivo mechanistic studies showed that injury-induced Vgf upregulation in RTECs is driven by the transcriptional regulator Sox9. These findings identify Vgf as an essential stress-responsive gene and reveal a crucial molecular target of the Sox9 regulated transcriptional program that controls epithelial cell fate during AKI.
2020-09-03 | GSE153625 | GEO
Project description:We found that EGR1 stimulates the expression of EZH2, which in turn inhibited the expression of EGR1 through a silencer region and deletion of the silencer resulted in upregulation of EGR1, which reduced the malignancy of breast cancer cells.
2020-09-22 | GSE134876 | GEO
Project description:Kidney damage involves the progressive and inexorable destruction of tubular and glomerular system. However, it is known that the patients survive AKI often recover renal structure and function. Correspondingly, previous studies demonstrated tubular regeneration in mice after massive kidney injury and linked mouse Sox9+ renal progenitor cells to this process. Here we show that renal progenitor cells can be cloned from renal needle biopsy sample of CKD patients. Progenitor cells can readily assembly into “kidney organoids” expressing proximal/distal tubular cell markers in 3D culture.
2022-04-22 | GSE119426 | GEO
Project description:We show that in an appropriate feeder cell-based culture system, it is feasible to isolate and long-term expand the progenitor-like SOX9+ renal epithelial cells (SOX9+ RECs) from adult mammalians. Single cell-derived SOX9+ REC lines can be established from human needle biopsy or urine samples with molecular homogeneity and genomic stability maintained during culture. Such cells grown in 3D culture system could self-organize into renal organoids composed of proximal tubular, Loop of Henle (LOH) and distal tubular cells as illustrated by single cell transcriptomic analysis.
2022-04-22 | GSE143154 | GEO
Project description:Kidney damage involves the progressive and inexorable destruction of tubular and glomerular system. However, it is known that the patients survive AKI often recover renal structure and function. Correspondingly, previous studies demonstrated tubular regeneration in mice after massive kidney injury and linked mouse Sox9+ renal progenitor cells to this process. Here we show that progenitor cells can be cloned from mouse medulla and cortex. Clones can be grown from a single cell and indefinitely passaged. Progenitor cells derived from renal medulla can readily assembly into “kidney organoids” expressing proximal/distal tubular cell markers in 3D culture.
2022-04-22 | GSE120049 | GEO
Project description:Senescence plays a key role in various physiological and pathological processes. We reported that injury-induced transient senescence correlates with heart regeneration, yet the multi-omics profile and molecular underpinnings of regenerative senescence remain obscure. Using proteomics and single-cell RNA-sequencing, here we report the regenerative senescence multi-omic signature in the adult mouse heart and establish its role in neonatal heart regeneration and Agrin-mediated cardiac repair in adult mice. We identified early growth response protein 1 (Egr1) as a regulator of regenerative senescence in both models. In the neonatal heart, Egr1 facilitates angiogenesis and cardiomyocyte proliferation. In adult hearts, Agrin-induced senescence and repair require Egr1, activated by the integrin/FAK-ERK/Akt1 axis in cardiac fibroblasts. We also identified cathepsins as injury-induced senescence-associated secretory phenotype (SASP) components that promote ECM degradation and potentially assist in reducing fibrosis. Altogether, we uncovered the molecular signature and functional benefits of regenerative senescence during heart regeneration, with Egr1 orchestrating the process.
2024-05-07 | GSE253383 | GEO