Profiling of Transcripts in Rat Proximal Tubule
Ontology highlight
ABSTRACT:
ORGANISM(S): Rattus norvegicus
PROVIDER: GSE13668 | GEO | 2009/01/26
SECONDARY ACCESSION(S): PRJNA114653
REPOSITORIES: GEO
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Project description:Freshly isolated rat kidney proximal tubules were subjected for transcript profiling. Three microarray experiments were done to obtain the kidney proxmial tubule transcriptome.
2009-01-26 | E-GEOD-13668 | biostudies-arrayexpress
Project description:The proximal tubules of the kidney carry out the bulk of solute reabsorption from the glomerular filtrate. They are also highly susceptible to damage as a result of diabetes or other syndromes that affect the kidney. The zebrafish embryonic/larval form of kidney, the pronephros, represents a simplified form of the mammalian organ, yet is easier to access and manipulate. We have recently described the importance of Hnf1b as master regulator in pronephros differentiation. Here, we establish a high-resolution expression profile of isolated, GFP-labelled proximal tubules from 3-day-old zebrafish. To enrich the profile in genes of functional relevance during pronephros differentiation, proximal tubules from Hnf1b-depleted larvae were analysed in parallel and differential expression analysis was performed.
2019-06-05 | GSE95808 | GEO
Project description:Freshly isolated rat kidney medullary thick ascending limbs were subjected for transcript profiling.
2009-01-26 | GSE13669 | GEO
Project description:Circadian variability in kidney function has long been recognized but is often ignored as a potential confounding variable in in vivo physiological experiments. To provide a guide for physiological studies on the kidney proximal tubule, we have now created a data resource consisting of expression levels for all measurable mRNA transcripts in microdissected proximal tubule segments from mice as a function of the time of day. This approach employs small-sample RNA-sequencing (RNA-seq) applied to microdissected renal proximal tubules including both S1 proximal convoluted tubules (PCTs) and S2 proximal straight tubules (PSTs). The data were analyzed using JTK-Cycle to detect periodicity. The data are provided as a user-friendly web page at https://esbl.nhlbi.nih.gov/Databases/Circadian-Prox/. In PCTs, 234 transcripts were found to vary in a circadian manner (3.7 % of total quantified). In PSTs, 334 transcripts were found to vary in a circadian manner (5.3 % of total quantified). Transcripts previously known to be associated with corticosteroid action and transcripts associated with increased flow were found to be overrepresented among circadian transcripts peaking during the “dark” portion of the day (Zeitgeber 14-22), corresponding to the peak levels of corticosterone and glomerular filtration rate in mice.
2023-04-10 | PXD039006 | Pride
Project description:To clarify the effects of cisplatin (cis-diamminedichloroplatinum II, CDDP) on the gene expression profiles in renal proximal tubules, microarray analyses were carried out using total RNA samples isolated from microdissected proximal tubules and whole kidneys. The molecular events underlying acute kidney injury (AKI) in the proximal tubules of rats with cisplatin-induced nephrotoxicity were successfully clarified with 17,000 transcripts. Renal proximal tubules were isolated under microscopy, and transcriptome data were collected with Rat Genome Survey Microarray® (Applied Biosystems)
2013-12-24 | E-GEOD-37133 | biostudies-arrayexpress
Project description:Female sex protects against development of acute kidney injury (AKI). While sex hormones may be involved in protection, the role of differential gene expression is unknown. We conducted gene profiling in male and female mice with or without kidney ischemia-reperfusion injury. Mice underwent bilateral renal pedicle clamping (30 min), and tissues were collected 24 hours after reperfusion. RNA-sequencing was performed on proximal tubules and kidney endothelial cells. Female mice were resistant to ischemic injury compared to males, determined by plasma creatinine, histologic scores, neutrophil infiltration, and extent of apoptosis. Sham mice had sex-specific gene disparities in proximal tubule and endothelium, and male mice showed profound gene dysregulation with ischemia-reperfusion compared to females. After ischemia proximal tubules from females exhibited smaller increases compared to males in injury-associated genes Lcn2, Havcr1, and Krt18, and no upregulation of Sox9 or Krt20. Endothelial upregulation of adhesion molecules and cytokines/chemokines occurred in males, but not females. Upregulated genes in male ischemic proximal tubules were linked to tumor necrosis factor and Toll-like receptor pathways, while female ischemic proximal tubules showed upregulated genes in pathways related to transport. The data suggest that sex-specific gene expression profiles in male and female proximal tubule and endothelium may underlie disparities in susceptibility to AKI.
2020-09-09 | GSE144622 | GEO
Project description:Freshly isolated rat kidney medullary thick ascending limbs were subjected for transcript profiling. Three microarray experiments were done to obtain the kidney medullary thick ascending limb transcriptome.
2009-01-26 | E-GEOD-13669 | biostudies-arrayexpress
Project description:Purpose:Cultured cell lines are widely used for research in the physiology, pathophysiology, toxicology and pharmacology of the renal proximal tubule. The lines that are most appropriate for a given use depend on the genes expressed.We have used modern RNA-sequencing techniques to identify the gene expression profile of 14 different cell lines plus primary cultures of mouse proximal tubule and compare them to transcriptomes of native kidney proximal tubules. Methods: 14 different proximal tubule cell lines were grown on permeable supports under conditions specific for the respective lines. RNA-Seq followed standard procedures. Results and conclusion: Transcripts expressed in cell lines showed variable match to transcripts selectively expressed in native proximal tubule. Opossum kidney (OK) cells displayed the highest percentage match (45%) with pig kidney cells (LLC-PK1) close behind (39%). Much lower percentage matches were seen for various human lines including HK-2 cells (26%) and lines from rodent kidneys (18-23%).An online resource (https://esbl.nhlbi.nih.gov/JBrowse/KCT/) has been created for interrogation of the data.No cell line closely matched the transcriptome of native proximal tubule cells. However, some of the lines tested are suitable for the study of particular metabolic and transport processes seen in the proximal tubule.
2020-10-14 | GSE135441 | GEO
Project description:Background: Acute kidney injury (AKI) is a common clinical event with high morbidity and mortality. We previously demonstrated that injection of cord blood endothelial colony forming cell (ECFC)-derived exosomes, highly enriched in miRNA(miR)-486-5p, prevented ischemic kidney injury in mice. While preclinical models support involvement of several miRs in AKI, the direct effects of miR-486-5p on injury and the kidney transcriptome are unknown. Objective: We studied effects of miR-486-5p in mice with kidney ischemia-reperfusion (IR) injury, and compared the impact of miR-486-5p and ECFC-derived exosomes on the transcriptome of proximal tubules (PTs) and renal endothelial cells. Methods: Adult male mice were subjected to bilateral kidney ischemia (30 min), and injected via tail vein with or without vehicle, miR-486-5p mimic, ECFC-derived exosomes, or scramble miR at the start of reperfusion. Plasma and tissues were collected 24 hrs after reperfusion, and proximal tubular and endothelial cells were isolated for mRNA analysis by RNA-Seq. Results: In mice with kidney IR, injection of miR-486-5p mimic increased levels of miR-486-5p in proximal tubules and endothelial cells, and significantly improved plasma creatinine, histological injury, neutrophil infiltration, and apoptosis, compared to vehicle treatment. MiR-486-5p inhibited expression of phosphatase and tensin homolog (PTEN), and activated AKT. Similar results were observed with exosomes, but scramble miR had no effect. In proximal tubules, miR-486-5p or exosomes reduced expression of several AKI genes (e.g. Lcn2, Havcr1 and Krt20) and caused alterations in apoptotic genes compared to IR alone. In endothelium, miR-486-5p or exosomes caused milder effect than in PTs but still impacting on expression of injury-related genes. Conclusion: MiR-486-5p protects mice against ischemic kidney injury. Both miR-486-5p and exosomes reduce expression of apoptotic genes in PTs and endothelium. The results suggest that systemic delivery of miR-486-5p has therapeutic potential in ischemic AKI.
2023-10-10 | GSE159701 | GEO
Project description:Cultured cell lines are widely used for research in the physiology, pathophysiology, toxicology and pharmacology of the renal proximal tubule. The lines that are most appropriate for a given use depend on the genes expressed. New tools for transcriptomic and proteomic profiling using RNA-sequencing (RNA-Seq) and mass spectrometry make it possible to catalog expressed genes in each cell line. This data set is the protoemic data of Rat NRK-52E cell line. We concludeno cell line fully matched the transcriptome of native proximal tubule cells. However, some of the lines tested are suitable for the study of particular metabolic and transport processes seen in the proximal tubule.
2020-10-15 | PXD021160 | Pride