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Exposure to a bacterial metabolite induces specific transcriptional signature of DAF-16 regulated genes, xanthine oxidase, and Phase I detoxification enzymes in C. elegans

ABSTRACT: RNA-seq analysis of the effect of a secondary metabolite produced by Streptomyces venezuelae that enhanced oxidative stress, mitochondrial dysfunction, and neurodegeneration in Caenorhabditis elegans. Nearly all DEGs had previous evidence of an association with DAF-16 (FOXO). DEGs were also enriched for Phase I (CYP) and Phase II (UGT) detoxification genes. DEGs representing several non-CYP Phase I enzymes were identified, including down-regulation of xdh-1. XDH-1 is interconvertible with XO and S. ven metabolite exposure enhanced XO activity.

ORGANISM(S): Caenorhabditis elegans

PROVIDER: GSE217300 | GEO | 2023/05/03

REPOSITORIES: GEO

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Effect of Traumatic Brain Injury, Erythropoietin and Anakinra on Hepatic Metabolizing Enzymes and Transporters in an Experimental Rodent Model

Project description:In contrast to the considerable in vitro and in vivo data demonstrating a decrease in cytochrome P450 (CYP) activity in inflammation and infection, clinically, traumatic brain injury (TBI) results in an increase in CYP and UDP glucuronosyltransferases (UGT) activity. The objective of this study was to determine the effects of TBI alone and along with treatment with either erythropoietin (EPO) or anakinra on gene expression of hepatic inflammatory proteins and drug metabolizing enzymes and transporters in a cortical contusion impact (CCI) injury animal model. Microarray-based transcriptional profiling was used to determine the effect on gene expression at 24 h, 72 h and 7 days post-CCI.

2015-06-01 | GSE64886 | GEO

Transcriptome sequencing (RNA-Seq) of non-tumor kidney tissues from 36 patients undergoing nephrectomy for exploring the metabolic mechanism of sorafenib and identifying the major transcriptional regulation factors in sorafenib metabolism in kidney

Project description:The multi-kinase inhibitor drug sorafenib is used as first line treatment for hepatocellular carcinoma and advanced renal cell carcinoma. Sorafenib mainly undergos cytochrome P450 (CYP) 3A4-mediated oxidation and uridine diphosphate glucuronosyl transferase (UGT) 1A9-mediated glucuronidation in liver, but the biotransformation of sorafenib in kidney remains unclear. Therefore, we integrated the mRNA expression data of 36 kidney samples and the corresponding metabolic activities for sorafenib to study the metabolic mechanism of sorafenib in kidney.

2018-01-03 | GSE93069 | GEO

Effects of the sex chromosome complement, XX, XO or XY, on the transcriptome and development of mouse oocytes during follicular growth.

Project description:Purpose: To understand how sex chromosome complement, XX, XO and XY, influences the transcriptome in the oocytes of grwoth phase. Methods: Oocytes of 50 and 60 µm in diameter were isolated from mouse ovaries at 18 dpp and subject to RNA-sequencing. Results: (1) Many X-linked genes are subject to X chromosome dosage dependent expression. (2) Many genes are expressed from both short and long arms of the Y chromosome. (3) The transcriptome landscape in XY oocytes is closer to XX oocytes than XO oocytes. (4) About 10 genes are differentially expressed in XY oocytes compared to XX or XO oocytes. Conclusions: The differences in XY oocytes became exacerbated to differ from XX or XO oocytes near the end of growth phase.

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Gestational Age-Dependent Changes in Gene Expression of Metabolic Enzymes and Transporters in Pregnant Mice

Project description:Knowing the gene expression profiles of drug-metabolizing enzymes and transporters throughout gestation is important for understanding the mechanisms of pregnancy-induced changes in drug pharmacokinetics. In this study, we compared gene expression of drug-metabolizing enzymes and transporters in the maternal liver, kidney, small intestine, and placenta of pregnant mice throughout gestation by microarray analysis. Specifically, we investigated cytochrome P450 (Cyp), UDP-glucuronosyltranserase (Ugt), and sulfotransferase (Sult), as well as ATP-binding cassette (Abc) and solute carrier (Slc) transporters. We found that relatively few Ugt and Sult genes were impacted by pregnancy in maternal tissues and placenta. Cyp1a2, most Cyp2 isoforms, Cyp3a11, and Cyp3a13 in the liver were down-regulated, with the greatest changes occurring on gestation days (gd) 15 and 19 compared to non-pregnant controls (gd 0). However, Cyp2d40, Cyp3a16, Cyp3a41a, Cyp3a41b, and Cyp3a44 in the liver were induced throughout pregnancy. Cyp expression in mid-gestation placenta (gd 10 and 15) was generally greater than that in term placenta (gd 19). There were also notable changes in Abc and Slc transporters. Abcc3 in the liver was down-regulated by 60%, and Abcb1a, Abcc4, and Slco4c1 in the kidney were down-regulated by 30-60% on gd 15 and 19 versus gd 0. Abcc5 in the placenta was induced 3-fold on gd 10 versus gd 15 and 19, whereas Slc22a3 expression in the placenta on gd 10 was 90% lower than that on gd 15 and 19. Overall, this study demonstrates important gestational age-dependent expression of drug-metabolizing enzymes and transporter genes, which may have mechanistic relevance to human pregnancy. Ninety pregnant mice at gestational days 0, 7.5, 10, 15, and 19 (n = 5-6 per gestational age) were used for the maternal liver, kidney, small intestine and placenta. The placentas were collected on gestational days 10, 15, and 19.

2013-10-08 | E-GEOD-41438 | biostudies-arrayexpress

Gestational Age-Dependent Changes in Gene Expression of Metabolic Enzymes and Transporters in Pregnant Mice

2013-10-08 | GSE41438 | GEO

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2023-09-20 | GSE239437 | GEO

Divergent expression and metabolic functions of human glucuronosyltransferases through alternative splicing

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2022-03-17 | GSE198642 | GEO

Quantitative profiling of the UGT transcriptome in human drug metabolizing tissues [Total RNA]

Project description:Purpose: Maintenance of cellular homeostasis and xenobiotics detoxification relies on the glucuronidation pathway mediated by 19 human UDP-glucuronosyltransferase enzymes (UGTs) encoded by 10 highly homologous genes. Recent evidence suggests that alternative splicing largely expands the human UGT transcriptome. Results: we establish the quantitative portrait of the UGT transcriptome in major metabolic organs. RNA sequencing uncovered that AS significantly shapes the UGT transcriptome, with variants quantitatively representing up to 35% and 60% UGT transcripts in normal and tumoral tissues respectively. Novel distinctive in-frame sequences were present in 20% alternative transcripts, which potentially encode UGT isoforms with distinct structural and functional features. Conclusions: This work exposes the important quantitative and biological significance of alternative UGT expression likely creating unparalleled protein diversity evolving from enzymes to regulators of cell metabolism.

2019-05-30 | GSE82291 | GEO

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