This SuperSeries is composed of the SubSeries listed below.
Defined conditions for the isolation and expansion of basal prostate progenitor cells of mouse and human origin.
Sex, Specimen part, Subject
View SamplesIsolation and culture of primary prostate epithelial stem/progenitor cells (PESC) has been proven difficult and ineffective. Here we present methods to grow and expand both murine and human basal PESCs long-term in serum- and feeder-free conditions. The method enriches for adherent mouse basal PESCs with a Lin-Sca1+ CD49f+Trop2high phenotype. Progesterone and sodium selenite are additionally required for the growth of human Lin-CD49f+Trop2high PESCs. The gene expression profiles of expanded basal PESCs show similarities to ES cells and Lamin B1 and PRDX1 were identified as novel PESC markers. If transplanted in combination with urogenital sinus mesenchyme, expanded mouse and human PESCs generate ectopic prostatic tubules demonstrating their stem cell activity in vivo. The novel methods will facilitate the cellular, molecular and genomic characterization of normal and pathologic prostate glands of mouse and human origin.
Defined conditions for the isolation and expansion of basal prostate progenitor cells of mouse and human origin.
Specimen part
View SamplesIsolation and culture of primary prostate epithelial stem/progenitor cells (PESC) has been proven difficult and ineffective. Here we present methods to grow and expand both murine and human basal PESCs long-term in serum- and feeder-free conditions. The method enriches for adherent mouse basal PESCs with a Lin-Sca1+ CD49f+Trop2high phenotype. Progesterone and sodium selenite are additionally required for the growth of human Lin-CD49f+Trop2high PESCs. The gene expression profiles of expanded basal PESCs show similarities to ES cells and Lamin B1 and PRDX1 were identified as novel PESC markers. If transplanted in combination with urogenital sinus mesenchyme, expanded mouse and human PESCs generate ectopic prostatic tubules demonstrating their stem cell activity in vivo. The novel methods will facilitate the cellular, molecular and genomic characterization of normal and pathologic prostate glands of mouse and human origin.
Defined conditions for the isolation and expansion of basal prostate progenitor cells of mouse and human origin.
Sex, Specimen part, Subject
View SamplesThe aim of the current study was to identify molecular markers for articular cartilage that can be used for the quality control of tissue engineered cartilage. Therefore a genom-wide expression analysis was performed using RNA isolated from articular and growth plate cartilage, both extracted from the knee joints of minipigs.
Identification of molecular markers for articular cartilage.
Specimen part
View SamplesActivation or maintenance of a leukemia stem cell self-renewal pathway in downstream myeloid cells is an important component of AML development
The Wnt/beta-catenin pathway is required for the development of leukemia stem cells in AML.
Specimen part
View SamplesMitochondrial defects are associated with a spectrum of human disorders, ranging from rare, inborn errors of metabolism to common, age-associated diseases such as diabetes and neurodegeneration. In lower organisms, genetic retrograde signaling programs have been identified that promote cellular and organism survival in the face of mitochondrial dysfunction. Here, we characterized the transcriptional component of the human mitochondrial retrograde response in an inducible model of mitochondrial dysfunction.
Mitochondrial dysfunction remodels one-carbon metabolism in human cells.
Cell line
View SamplesUremic media calcification is not only driven by systemic factors such as hyperphosphatemia, but also crticially dependent on vascular smooth muscle cells per se. We hypothesized that the different developmental origins of vscular smooth muscle cells might lead to a heterogeneous susceptibility to develop media calcification.
Heterogeneous susceptibility for uraemic media calcification and concomitant inflammation within the arterial tree.
Specimen part
View SamplesSelenium, one of a class of selenocysteine-containing proteins (selenoproteins), is an essential micronutrient known for its cancer prevention properties. Selenoprotein H (SepH) is a recently identified nucleolar oxidoreductase whose function is not well understood. Here we report that seph is an essential gene regulating organ development in zebrafish. Metabolite profiling by targeted LCMS/ MS demonstrated that SepH deficiency impairs redox balance by reducing the levels of ascorbate and methionine, while increasing methionine sulfoxide. Transcriptome analysis revealed that SepH deficiency induces an inflammatory response and activates the p53 pathway. Consequently, loss of seph renders larvae susceptible to oxidative stress and DNA damage. Finally, we demonstrate that seph interacts with p53 deficiency in adulthood to accelerate gastrointestinal tumor development. Overall, our findings establish that seph regulates redox homeostasis and suppresses DNA damage. We hypothesize that SepH deficiency may contribute to the increased cancer risk observed in cohorts with low selenium levels. Overall design: 4 WT zebrafish samples and 4 SepH mutant samples
Selenoprotein H is an essential regulator of redox homeostasis that cooperates with p53 in development and tumorigenesis.
Subject
View SamplesThe modes of triazole reproductive toxicity have been characterized by an observed increased in serum testosterone and reduced insemination and fertility indices. The key events involved in the disruption in testosterone homeostasis and reduced fertility remain unclear. Gene expression analysis was conducted on liver from Sprague Dawley rats dosed with myclobutanil (300 mg/kg/day) or triadimefon (175 mg/kg/day) for 6, 24 or 336 hours. Pathway-based analysis highlighted key biological processes affected by all three triazoles in the liver including fatty acid catabolism, steroid metabolism, and xenobiotic metabolism. Within the pathways identified in the liver, specific genes involved in phase I-III metabolism and fatty acid metabolism were affected by all three triazoles. These modulated genes are part of a network of lipid and testosterone homeostasis pathways regulated by the constitutive androstane (CAR) and pregnane X (PXR) receptors. Gene expression profiles from this study indicate triazoles activate CAR and PXR; increase fatty acid catabolism and steroid metabolism in the liver; constituting a plausible series of key events contributing to the observed disruption in testosterone homeostasis.
Toxicogenomic effects common to triazole antifungals and conserved between rats and humans.
No sample metadata fields
View SamplesThe triazole antifungals myclobutanil (MYC), propiconazole (PPZ) and triadimefon (TDF) [Propiconazole CASNR 60207-90-1; Triadimefon CASNR 43121-43-3; Myclobutanil CASNR 88671-89-0] all disrupt steroid hormone homeostasis and cause varying degrees of hepatic toxicity. To identify biological pathways consistently activated across various study designs, gene expression profiling was conducted on livers from rats following acute, repeated dose, or prenatal to adult exposures. To explore conservation of responses across species, gene expression from these rat in vivo studies were also compared to in vitro data from rat and human primary hepatocytes exposed to MYC, PPZ, or TDF. Pathway and gene level analyses across time of exposure, dose, and species identified patterns of expression common to all three triazoles, which were also conserved between rodents and humans. Pathways affected included androgen and estrogen metabolism, xenobiotic metabolism signaling through CAR and PXR, and CYP mediated metabolism. Many of the differentially expressed genes are regulated by the nuclear receptors CAR, PPAR alpha and PXR, including ABC transporter genes (Abcb1 and MDR1), genes significant to xenobiotic, fatty acid, sterol and steroid metabolism (Cyp2b2 and CYP2B6; Cyp3a1 and CYP3A4; Cyp4a22 and CYP4A11) and xxx (Ugt1a1 and UGT1A1). Modulation of hepatic sterol and steroid metabolism is a plausible mechanism for triazole induced increases in serum testosterone. The gene expression changes caused by all three triazoles appear to focus on pathways regulating lipid and testosterone homeostasis, identifying potential common mechanisms of triazole hepatotoxicity that are conserved between rodents and humans.
Toxicogenomic effects common to triazole antifungals and conserved between rats and humans.
No sample metadata fields
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