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Transcriptomic analysis in Caenorhabditis elegans exposed to organic and inorganic forms of arsenic or mercury

ABSTRACT: Transcriptomic analysis in Caenorhabditis elegans exposed to organic and inorganic forms of arsenic or mercury

PROVIDER: PRJNA807672 | ENA |

REPOSITORIES: ENA

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Transcriptomic analysis in Caenorhabditis elegans exposed to organic and inorganic forms of arsenic or mercury

Project description:Arsenic and mercury are known chemical hazards. The differences in effects from organic and inorganic forms of these toxic elements is less well understood, however. The nematode Caenorhabditis elegans (C. elegans) is a suitable model to investigate the toxicity of environmental hazards. In this study, the transcriptomic profiles of C. elegans exposed to inorganic mercury chloride (HgCl2) and sodium (meta)arsenite (NaAsO2) were assessed alongside organic methylmercury chloride (meHgCl) and dimethylarsinic acid (DMA). For this purpose, adult C. elegans were exposed for 24 h to NaAsO2 (10 µg/ml), DMA (200 µg/ml), HgCl2 (2 µg/ml), and meHgCl (0.5 µg/ml), concentrations that were equitoxic in juveniles for developmental delay. Whole genome gene expression profiles were determined by using Cellegans_UnrestrictedGE_G2519F_020186 Microarray (Agilent Technologies, Santa Clara, CA). The results showed significant changes in the transcriptome of adult C. elegans exposed to NaAsO2, DMA, HgCl2, or meHgCl relative to the control group (C. elegans treated with water). A total of 927 and 1221 differentially expressed genes (DEGs) were found in C. elegans treated with 10 µg/ml NaAsO2 or 200 µg/ml DMA, respectively. Interestingly, only 161 DEGs were in common for these two chemicals. Exposure to 2 µg/ml HgCl2 or 0.5 µg/ml meHgCl altered the expression of 670 and 485 genes, respectively, and out of these genes, 154 were commonly altered by the two treatments. Analysis of DEGs revealed that organic and inorganic forms of arsenic and mercury have different effects on the transcriptome of adult C. elegans.

2022-02-18 | GSE196891 | GEO

Toxicogenomic Responses to Inorganic and Organic Mercury in Caenorhabditis elegans

Project description:Humans are exposed to both inorganic and organic mercury. While the toxicity of mercury is well established, much remains to be resolved about how different mercurials act at the molecular level. To address this issue, we employed a toxicogenomics approach using the nematode C. elegans. Using sub-, low- or high-toxic exposures of either HgCl2 or CH3HgCl the effects of these mercurials on steady-state mRNA levels for the entire genome were determined. A total of 473 and 2,865 genes were differentially expressed in the HgCl2 and CH3HgCl treatments, respectively. Hierarchical clustering, principal components and pattern analyses indicated that the transcriptional responses of the mercurials were unique.

2013-09-09 | GSE28915 | GEO

Toxicogenomic Responses to Inorganic and Organic Mercury in Caenorhabditis elegans

2013-09-09 | E-GEOD-28915 | biostudies-arrayexpress

Gene expression profiling of human prostate spheres and organoids exposed to inorganic arsenic (iAs)

Project description:Gene expression analysis of prostate spheres and orgnoids in response to the inorganic arsenic exposure, to provide insight into the molecular mechenisms invovled in arsenic-induced homeostasis dysregulation of prostate stem-progenitor cells.

2020-06-17 | GSE137357 | GEO

Transcriptional responses of Escherichia coli during recovery from inorganic or organic mercury exposure

Project description:Gene expression changes during exponential growth of E. coli MG1655 were compared by RNA-seq after sub-acute exposure to inorganic mercuric chloride (HgCl2) or to the organomercurial, phenylmercuric-acetate (PMA). Differential gene expression revealed common and distinct responses to the mercurials from initial growth stasis through subsequent recovery. Sub-acute mercurial exposures affected expression of ~45% of all genes, many reflecting distinct biochemical damage by each mercurial and the corresponding cellular resources available for recovery of normal growth.

2018-02-20 | GSE95575 | GEO

Effect of paternal inorganic arsenic exposure on transcriptional profilings of F1-male liver in mouse

Project description:Adult male mice (F0) were exposed to 250 ppb inorganic arsenic (iAs) in drinking water before mating with unexposed female mice to generate male F1 offspring (iAsF1-M). Unexposed male mice were bred simultaneously to generate male controls (conF1-M). Both iAsF1-M and conF1-M mice drank normal water without iAs. Adult iAsF1-M and conF1-M mice were harvested to collect liver samples to do RNA-seq.

2023-09-13 | GSE205355 | GEO

Effect of Dietary Supplementation of Selenium (Organic vs. Inorganic) on Liver Gene Expression Profile in Beef Heifers

Project description:Selenium (Se) is an essential nutrient for beef cattle health and commercial production. The molecular mechanisms responsible for the physiological responses of the animal to dietary Se supplementation, however, have not been evaluated. Furthermore, the potential effect of two chemical forms (organic vs. inorganic) of Se on gene expression by Se-sufficient cattle has not been evaluated. Microarray analysis using the GeneChip Bovine Genome Array (Affymetrix, Inc., Santa Clara, CA) was conducted to determine if dietary Se supplementation in organic vs. inorganic form (OSe vs. ISe) differentially affects the liver gene expression profile in growing beef heifers.

2010-04-19 | GSE19696 | GEO

DNA microarray analysis for HepG2 cells exposed to arsenic trioxide

Project description:DNA microarray analysis revealed that the genes related to cell cycle regulation were significantly induced at non- and sub-lethal concentrations (i.e., 0.05-6 µM), while the common feature of heavy metal toxicity such as oxidative damage and following increase in glutathione, heat shock proteins, and metallothionein were confirmed at high concentrations (i.e., 6-40 µM). The concentration dependent modulation of gene expression (induction of cell cycle genes, induction of cell cycle arrest genes and apoptotic genes) following exposure to arsenic was further supported by acceleration of cell proliferation, ROS generation, and cytotoxicity. Furthermore, three cell cycle genes (i.e., CDC25B, UBE2C, and PTTG1) were proposed as marker genes of inorganic arsenic exposure. Those results indicated the potential pro-carcinogenic actions of inorganic arsenic occur in environmentally relevant exposures (as low as 0.07 µM).

2013-07-02 | GSE48441 | GEO

Differential gene expression in the liver of zebrafish larvae exposed to 1 mM inorganic arsenic from 4-120 hpf

Project description:The goal of this study is to compare gene expression levels in the livers of larval Tg(fabp10:nls-mcherry) exposed to 1 mM inorganic arsenic from 4-120 hpf to the unexposed siblings. Samples were collected from Tg(fabp10:nls-mcherry) zebrafish larvae that were derived from incrossed parents of the same strain. The background of transgenic lines were typically from mixed outcrosses of the transgenics to AB, TAB5, and TAB14 strains when regenerating the lines as the working stocks aged. All samples were collected at approximately 120 hpf - natural spawning at 8:30-9:00AM EST on day zero, samples were collected at 8-10AM EST on day 5.

2017-11-12 | GSE104953 | GEO

Interactive effects of arsenic and a high-fat diet on hepatic gene expression

Project description:Chronic exposure to inorganic arsenic (iAs) or a high-fat diet (HFD) can produce liver injury. However, the interactive molecular biological effects and mechanism of iAs and HFD are as of yet unclear. We used microarrays to detail the interactive effects of arsenic and a high-fat diet on hepatic gene expression.

2013-11-30 | GSE52702 | GEO

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