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Shifted Metabolic Bias in Livers of Mice Lacking Hepatocytic Thioredoxin Reductase-1 Protects Against Acetaminophen Toxicity

ABSTRACT: Genetic disruption of thioredoxin reductase 1 protects against acetaminophen (APAP) toxicity. To determine the role of the thioredoxin system on xenobiotic metabolism we challeneged wildtype and txnrd1liver-null mice with acetaminophen. Adult male wildtype and txnrd1 liver-null mice (C57BL6/J) were treated with either saline (PBS) or 100mg/kg APAP. Liver RNA was harvested eight hours after challenge and processed for microarray analysis. Comparison of 2 treatment conditions in 2 genotypes, biological replicates in triplicate.

ORGANISM(S): Mus musculus

SUBMITTER: Ed Schmidt

PROVIDER: E-GEOD-37874 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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A Txnrd1-dependent metabolic switch alters hepatic lipogenesis, glycogen storage, and detoxification.

Iverson Sonya V SV Eriksson Sofi S Xu Jianqiang J Prigge Justin R JR Talago Emily A EA Meade Tesia A TA Meade Erin S ES Capecchi Mario R MR Arnér Elias S J ES Schmidt Edward E EE

Free radical biology & medicine 20130603

Besides helping to maintain a reducing intracellular environment, the thioredoxin (Trx) system impacts bioenergetics and drug metabolism. We show that hepatocyte-specific disruption of Txnrd1, encoding Trx reductase-1 (TrxR1), causes a metabolic switch in which lipogenic genes are repressed and periportal hepatocytes become engorged with glycogen. These livers also overexpress machinery for biosynthesis of glutathione and conversion of glycogen into UDP-glucuronate; they stockpile glutathione-S- ...[more]

PMID: 23743293

Similar Datasets

Shifted Metabolic Bias in Livers of Mice Lacking Hepatocytic Thioredoxin Reductase-1 Protects Against Acetaminophen Toxicity

Project description:Genetic disruption of thioredoxin reductase 1 protects against acetaminophen (APAP) toxicity. To determine the role of the thioredoxin system on xenobiotic metabolism we challeneged wildtype and txnrd1liver-null mice with acetaminophen.

2013-06-08 | GSE37874 | GEO

Hepatic responses of mice and rats to equivalent acetaminophen (APAP) insult – SWATH proteomics

Project description:The well-known difference in sensitivity of mice and rats to acetaminophen (APAP) liver injury has been related to differences in the fraction that is bioactivated to the reactive metabolite N-acetyl-p-benzoquinoneimine (NAPQI). Physiologically-based pharmacokinetic modelling was used to identify doses of APAP (300 and 1000 mg/kg in mice and rats, respectively) yielding similar hepatic burdens of NAPQI, to enable the comparison of temporal liver tissue responses under conditions of equivalent chemical insult.

2023-08-31 | PXD034438 | Pride

Acetaminophen-induced S-nitrosylation and S-sulfenylation signalling in 3D cultured hepatocarcinoma cell spheroids.

Project description:In this project we have studied human hepatoma cell line grown in 3D spheroids subjected to APAP (acetaminophen) treatment. Global protein expression analysis (label free) and analysis of cysteine oxidations (SNO/SOH TMT proteomics) have been combined to get insights in to the molecular response triggered.

2018-10-18 | PXD003587 | Pride

Differential Regulation of Mitogen-Activated Protein Kinases by Acetaminophen in TAMH cells

Project description:Acetaminophen (APAP), a widely used analgesic and antipyretic that is considered to be relatively safe at recommended doses, is the leading cause of drug-induced liver failure in the United States. 3M-bM-^@M-^Y-Hydroxyacetanilide (AMAP), a regioisomer of acetaminophen is useful as a comparative tool for studying APAP-induced toxicity since it is non-toxic relative to APAP. TGF-alpha transgenic mouse hepatocytes were treated with both isomers to investigate mitogen-activated protein kinase cascades in order to differentiate their toxicological outcomes. Mitogen-activated protein kinase (MAPK) cascade expression and activation were measured using microarray and Bioplex technologies, respectively. APAP treatment led to c-Jun N-terminal kinase (JNK) activation, whereas AMAP treatment led to the activation of extracellular-signal-regulated protein kinase (ERK). The microarray data suggested APAP treatment may upregulate gene expression at multiple levels of the JNK cascade including a JNK-related scaffold protein. Expression data was related to phosphoprotein levels using the Bioplex system. APAP treatment led to a significant activation of JNK compared to its regioisomer. In contrast, microarray analysis of AMAP showed a slight upregulation of ERK gene activity. Furthermore, Bioplex data showed AMAP treatment led to significant ERK phosphorylation compared to APAP. Cell viability assays confirmed that APAP-induced activation of JNK was related to higher rates of cell death, whereas activation of ERK by AMAP may be cytoprotective. 27 arrays, 9 experimental groups, 2hr AMAP, 2hr APAP, 2hr Control, 6hr AMAP, 6hr APAP, 6hr Control, 24hr AMAP, 24hr APAP, 24hr Control.

2010-07-06 | E-GEOD-18614 | biostudies-arrayexpress

MicroRNA-SEQ analysis of kidney and liver damage in rat

Project description:Purpose : Identification of novel microRNA biomarkers in urine and plasma from rats with kidney or liver damage micoRNA-SEQ was used to analyze changes in miRNA profiles of tissue, plasma and urine samples of rats treated with either a nephrotoxicant (cisplatin) or one of two hepatotoxicants (Acetaminophen [APAP] or Carbon Tetrachloride [CCL4]).

2016-06-01 | E-GEOD-79017 | biostudies-arrayexpress

Transcription profiling of mouse liver after Acetaminophen intoxication

Project description:Acetaminophen (APAP) is the most widely used analgesic in the United States. Its acute overdose causes liver damage by inducing localized centrilobular cell death. Because of widespread use, APAP toxicity has become the most frequent cause of acute liver failure. Many factors have been associated with the susceptibility of APAP-induced liver injuries, however, few of them have been confirmed and used in the clinical setting. We tried to identify the subset of factors that could affect susceptibility to APAP-induced liver injury by an integrative genetic, transcriptional and 2-D-NMR-based metabolomic analysis across a panel of inbred mouse strains. Experiment Overall Design: After a single administration of high dose (300 mg/kg i.p.) APAP, liver and blood samples were extracted from 3 sensitive (C57B6, DBA/2, and SmJ) and 1 resistant (SJL) mice strains at 0, 3 and 6 hour after APAP exposure. Endogenous metabolites from liver samples were analyzed by 1H-13C 2-dimensional-NMR and gene expression changes occurring within these liver samples were simultaneously analyzed using Affymetrix microarrays. The transcriptional and metabolomic data was jointly analyzed, and functional information within the Gene Ontology database was used to identify the subset of genes that could affect susceptibility to APAP-induced liver injury in the early phase response.

2009-08-23 | E-GEOD-17649 | biostudies-arrayexpress

Atlantic salmon liver transcriptome response to exposure to three human pharmaceuticals

Project description:The combination of increasing consumption rates and limited elimination under conventional waste water treatment practices of many pharmaceutical compounds has now led to their detection in aquatic environments. Three of the most frequently detected pharmaceuticals in the environment are Acetaminophen (APAP), Atenolol (AT) and Carbamazepine (CBZ). Atlantic salmon (parr) was exposed to environmentally relevant levels of Acetaminophen (APAP) (54.77 ± 34.67 µg·L-1), Atenolol (AT) (11.08 ± 7.98 µg·L-1) and Carbamzepine (CBZ) (7.85 ± 0.13 µg·L-1). Gene expression was analyzed in liver tissues using a 16K GRASP (University of Victoria, Canada) cDNA microarray. GRASP 16K v.2 cDNA microarrays were used for this study (Accession # A-GEOD-2716). A dual-labelled experimental design was employed for the microarray hybridisations. Each experimental cDNA sample (Cy3 labeled) was competitively hybridised against a common pooled-reference sample (Cy5 labeled). The entire experiment comprised 20 hybridisations - 4 states (APAP, AT, CBZ, control) × 1 time-point ( at 5 days) × 5 biological replicates (males only). Hybridisations were undertaken concurrently.

2012-02-29 | E-TABM-1213 | biostudies-arrayexpress

p53 Contributes to Differentiating Gene Expression Following Exposure to Acetaminophen and Its Less Hepatotoxic Regioisomer Both In Vitro and In Vivo

Project description:The goal of the present study was to compare hepatic toxicogenomic signatures across in vitro and in vivo mouse models following exposure to acetaminophen (APAP) or its relatively nontoxic regioisomer 3'-hydroxyacetanilide (AMAP). Two different Affymetrix microarray platforms and one Agilent Oligonucleotide microarray were utilized. APAP and AMAP treatments resulted in significant and large changes in gene expression that were quite disparate, and likely related to their different toxicologic profiles. Ten transcripts, all of which have been implicated in p53 signaling, were identified as differentially regulated at all time-points following APAP and AMAP treatments across multiple microarray platforms. Protein-level quantification of p53 activity aligned with results from the transcriptomic analysis, thus supporting the implicated mechanism of APAP-induced toxicity. Therefore, the results of this study provide good evidence that APAP-induced p53 phosphorylation and an altered p53-driven transcriptional response are fundamental steps in APAP-induced toxicity. Preliminary study utilizing 9 arrays, 9 experimental groups, 2 h AMAP, 2 h APAP, 2 h control, 6 h AMAP, 6 h APAP, 6 h control, 24 h AMAP, 24 h APAP, 24 h control.

2016-03-29 | E-GEOD-56576 | biostudies-arrayexpress

Discover preclinical biomarkers of hepatotoxicity: Acetaminophen and Carbon tetrachloride

Project description:Preclinical biomarkers useful for identification of idiosyncratic drugs have not been identified. It is hypothesized that patterns of transcript expression for the hepatotoxicants, including classical and idiosyncratic hepatotoxicants, are similar and the patterns differ from those of non-hepatotoxicants. This experiment is part of the biomarkers study, and focus on two clasical hepatotoxicants: Acetaminophen and Carbon tetrachloride. We have employed whole genome microarray expression profiling to identify liver gene expression changes induced by hepatotoxicants. For the same animal, urinary microRNA profiling were analyzed. APAP and CCl4 both significantly increased the urinary levels of 44 and 28 miRNAs, respectively. In addition, 10 of the increased miRNAs were in common between APAP and CCl4. Computational analysis was used to predict target genes of the 10 shared hepatotoxicant-induced miRNAs. From the same animals, liver gene expression profiling was performed using whole genome microarrays. Eight putative target genes were found to be significantly altered in the liver of APAP and CCl4 treated animals. Acetaminophen induced liver gene expression changes in rats (Six to seven week-old male Sprague-Dawley rats, provided by the US Food and Drug Administration National Center for Toxicological Research (NCTR) breeding colonies, were used for the study.) were measured at 6 hours, 24 hours, 3 days and 7 days after exposure to doses of 0, 100 and 1250 mg/kg. Carbon tetrachloride induced liver gene expression changes in rats were measured at 6 hours, 24 hours and 3 days after exposure to doses of 0, 50 and 2000 mg/kg. Each group has at least 4 animals, total of 96 samples.

2012-03-15 | E-GEOD-32891 | biostudies-arrayexpress

Transcription profiling of Arabidopsis thioredoxin reductase knock-out mutant

Project description:Transcriptomic study of a thioredoxin reductase knock-out mutant. Biological question : Thioredoxins are small redox proteins implicated in crucial pathways of cell life. They are reduced by a conserved flavoprotein named NADPH-dependent thioredoxin reductase (NTR). In order to give an insight into the functions of the NTR/thioredoxin pathway in Arabidopsis, we have used a reverse genetic approch. Both NTR genes (NTRA and NTRB) have been inactivated in the double ntra ntrb mutant. T-DNA lines have been provided by the SALK library. Surprisingly, this mutant shows a limited phenotype suggested that some additional redox pathways are involved in compensating the inactivation of the NTR/thioredoxin pathway. In order to isolate compensatory genes that would be transcriptionally induced in the ntra ntrb mutant, we have performed this CATMA project. Seeds of the wild-type Col-0 ecotype and of the ntra ntrb homozygote double mutant were sowed in soil. Three replicates of lines were made (Col-0 1, 2 and 3 ntra ntrb 1, 2 and 3) : plants were put at different places of the greenhouse and grown at different times. Germination was synchronized by 4 days at 4C and plants were grown during 17 days, until they reached a 6 rosette leaves stage. Entire plants (30 plants per sample) were harvested, frozen in liquid nitrogen and stored at -80C until extraction.

2005-09-15 | E-MEXP-365 | biostudies-arrayexpress

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