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Developing a novel human adult kidney organoid model to recapitulate injury-associated regeneration and polycystic kidney disease [scRNA-Seq]

ABSTRACT: Current renal organoid models derived from embryonic or induced pluripotent stem cells mimic development. Yet, few studies have attempted to generate organoids from human adult kidney to recapitulate regeneration or pathological dysregulation in vitro. Here, we report a novel expanding regenerative organoids culture system from renal cortex and medulla. Transcriptomic sequencing and immunostaining identified that these organoids share similar molecular features with kidney injury-responsive regeneration. Heterogeneous populations in organoids including cycling epithelial progenitors and differentiated cell types were identified by single cell sequencing including proximal tubules, principal cells and collecting duct (CD) progenitors that can be induced into functional CD system. Furthermore, we established polycystic organoids derived from patients that represent an advanced platform for polycystic kidney disease (PKD) modeling. By drug screening, QNZ, GSK2193874 and AMPK activators were shown to significantly reduce polycystic growth. Our results demonstrated a novel in vitro renal organoid model to study regenerating adult renal cells and PKD mechanism, providing tools for discovery of therapeutic targets.

ORGANISM(S): Homo sapiens

PROVIDER: GSE241972 | GEO | 2023/08/31

REPOSITORIES: GEO

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Developing a novel human adult kidney organoid model to recapitulate injury-associated regeneration and polycystic kidney disease [RNA-Seq]

Project description:Current renal organoid models derived from embryonic or induced pluripotent stem cells mimic development. Yet, few studies have attempted to generate organoids from human adult kidney to recapitulate regeneration or pathological dysregulation in vitro. Here, we report a novel expanding regenerative organoids culture system from renal cortex and medulla. Transcriptomic sequencing and immunostaining identified that these organoids share similar molecular features with kidney injury-responsive regeneration. Heterogeneous populations in organoids including cycling epithelial progenitors and differentiated cell types were identified by single cell sequencing including proximal tubules, principal cells and collecting duct (CD) progenitors that can be induced into functional CD system. Furthermore, we established polycystic organoids derived from patients that represent an advanced platform for polycystic kidney disease (PKD) modeling. By drug screening, QNZ, GSK2193874 and AMPK activators were shown to significantly reduce polycystic growth. Our results demonstrated a novel in vitro renal organoid model to study regenerating adult renal cells and PKD mechanism, providing tools for discovery of therapeutic targets.

2023-08-28 | GSE228971 | GEO

Expression data from kidney of 36d old PKD/Mhm rats.

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Transcription profiling of rat kidney from male and female heterozygous PKD/Mhm and wild type animals

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2009-10-11 | E-GEOD-13065 | biostudies-arrayexpress

Untargeted gas chromatography–mass spectrometry-based metabolomics analysis of kidney and liver tissue from the Lewis Polycystic Kidney rat

Project description:Polycystic kidney disease (PKD) encompasses a spectrum of inherited disorders that lead to end-stage renal disease (ESRD). There is no cure for PKD and current treatment options are limited to renal replacement therapy and transplantation. A better understanding of the pathobiology of PKD is needed for the development of new, less invasive treatments. The Lewis Polycystic Kidney (LPK) rat phenotype has been characterized and classified as a model of nephronophthisis (NPHP9, caused by mutation of the Nek8 gene) for which polycystic kidneys are one of the main pathologic features. The aim of this study was to use a GC-MS-based untargeted metabolomics approach to determine key biochemical changes in kidney and liver tissue of the LPK rat. Tissues from 16-week old LPK (n = 10) and Lewis age- and sex-matched control animals (n = 11) were used. Principal component analysis (PCA) distinguished signal corrected metabolite profiles from Lewis and LPK rats for kidney (PC-1 77%) and liver (PC-1 46%) tissue. There were marked differences in the metabolite profiles of the kidney tissues with 122 deconvoluted features significantly different between the LPK and Lewis strains. The metabolite profiles were less marked between strains for liver samples with 30 features significantly different. Five biochemical pathways showed three or more significantly altered metabolites: transcription/translation, arginine and proline metabolism, alpha-linolenic and linoleic acid metabolism, the citric acid cycle, and the urea cycle. The results of this study validate and complement the current literature and are consistent with the understood pathobiology of PKD.

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Polycystic Kidney Disease Progression Expression Analysis

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Regulation of gene expression by GLIS3 during neonatal kidney development

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Project description:Kidney organoids are emerging as an increasingly applied model system to hold great promise for transplantation to individuals with end-stage renal disease and as a useful tool for kidney research. Multiple iPSC-derived renal organoids have been established to understand kidney development and disease. However, few disease models originated from adult renal tissue with fully mature cell fates have been set up to recapitulate kidney inflammation or fibrosis. Here we created a novel organoid model that faithfully representing the cellular state of inflammatory response during the progression of renal disease upon TNFα exposure. scRNA-seq showed signatured inflammatory chemokines, cytokines and inflammation-associated signaling pathways were activated in TNFα-treatment organoids together with injury-associated markers such as LCN2 and CLU. Donor age is associated with TNFα-induced inflammatory reaction in organoids. Kidney organoids from young donors showed more transcriptional changes by down-regulation of TGFβ and extracellular matrix genes. In summary, we established an in vitro TNFα-treated kidney organoid model that representing the cellular state of the inflammatory response during renal disease progression and provided a novel tool for studying inflammation-related kidney disease and drug discovery.

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Establishment of epithelial inflammatory injury model using adult kidney organoids [scRNA-seq]

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