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Extracellular vesicles and their miRNA content as biomarkers for exposure to the environmental contaminant, benzo(a)pyrene

ABSTRACT: Benzo(a)pyrene is a widespread environmental pollutant associated with the development of toxic effects on human health. This work explores the potential of microRNAs extracted from extracellular vesicles from circulating blood as biomarkers of exposure to this pollutant.

ORGANISM(S): Homo sapiens

PROVIDER: GSE256027 | GEO | 2024/02/25

REPOSITORIES: GEO

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Cytochrome P450 Monooxygenase Mediated Metabolic Utilization of Benzo(a)pyrene by Fungi

Project description:Soil dwelling Aspergillus fungi possess the versatile metabolic capability to utilize complex organic compounds which are toxic to humans, yet the mechanisms they employ remain largely unknown. Benzo(a)pyrene is a common carcinogenic contaminant, posing a significant concern for human health. Here, we report that Aspergillus fungi can degrade benzo(a)pyrene effectively. In Aspergillus nidulans, exposure to benzo(a)pyrene results in transcriptomic and metabolic changes associated with cellular growth and energy generation, implying that the fungus utilizes benzo(a)pyrene as a food. Importantly, we identify and characterize the conserved bapA gene encoding a cytochrome P450 monooxygenase that exerts the first step in the degradation of benzo(a)pyrene. We further demonstrate that the fungal NF-κB-type global regulators VeA and VelB are required for benzo(a)pyrene degradation in A. nidulans, which occurs through expression control of bapA in response to nutrient limitation. Our study illuminates fundamental knowledge of fungal benzo(a)pyrene metabolism and provides novel insights into enhancing bioremediation potential.

2018-07-10 | GSE116804 | GEO

Glutathione S-transferase induction after exposure to benzo[a]pyrene

Project description:Benzo[a]pyrene induction of glutathione S-transferases, an activity-based protein profiling investigation

2020-05-26 | PXD010610 | Pride

Acute hepatic transcriptional response in male mice following oral exposure to benzo(a)pyrene

Project description:Benzo(a)pyrene is a well-established human carcinogen in humans and rodents. In the present study, we sought to determine the dose- and time-dependent changes in gene expression upon oral exposure to benzo(a)pyrene. Adult male B6C3F1 mice were exposed to four doses of benzo(a)pyrene or vehicle control for three days and sacrificed 4 or 24 hours after the final exposure.

2015-07-01 | GSE43633 | GEO

Modulating the Response to Benzo[a]pyrene when CYP1A1 and CYP1B1 are Knocked Down

Project description:Benzo[a]pyrene is a Group 1 carcinogen. It undergoes metabolism in the liver through CYP1A1 and CYP1B1 enzymes. This study was conducted to investigate the response to benzo[a]pyrene in the liver when these enzymes are knocked down.

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Sub-chronic forestomach transcriptional response in adult male MutaTMMouse following oral exposure to benzo(a)pyrene

Project description:Benzo(a)pyrene is a well-established human carcinogen in humans and rodents. In the present study, we sought to determine the dose- and time-dependent changes in gene expression upon oral exposure to benzo(a)pyrene. Adult male MutaTMMouse were exposed to three doses of benzo(a)pyrene or vehicle control (olive oil) for 28 days and sacrificed three days after the final exposure.

2013-09-27 | GSE43438 | GEO

Transcriptomic response to benzo[a]pyrene treatment in HepG2 cells

Project description:This SuperSeries is composed of the following subset Series: GSE36242: Transcriptomic response to benzo[a]pyrene treatment in HepG2 cells (RNA-Seq) GSE36243: Transcriptomic response to benzo[a]pyrene treatment in HepG2 cells (Affymetrix) Refer to individual Series

2012-11-16 | E-GEOD-36244 | biostudies-arrayexpress

Effect of the genotoxic human lung carcinogen benzo[a]pyrene and its non-carcinogenic isomer benzo[e]pyrene on transcriptomic profiles in HepaRG cells.

Project description:Twenty-eight days after the initial seeding, the terminally differentiated HepaRG cells were treated with 2 µM benzo[a]pyrene (B[a]P) and benzo[e]pyrene (B[e]P) for 72 hours. Following the treatment, the cells were harvested by mild trypsinization, washed in phosphate-buffered saline, and immediately frozen at −80°C for subsequent analyses. Gene expression profiles in the HepaRG cells treated with B[a]P and B[e]P were investigated using Agilent whole genome 8x60K human microarrays according to the manufacturer’s instructions.

2018-07-24 | GSE117476 | GEO

Benzo[a]pyrene response in primary mouse hepatocytes

Project description:Gene expression changes to several concentrations of benzo[a]pyrene in primary hepatocytes of wildtype and Xpa-/-p53+/- mice

2011-08-11 | E-TABM-1139 | biostudies-arrayexpress

Benzo(a)pyrene induces similar gene expression changes in testis of DNA repair proficient and deficient male mice

Project description:DNA damage induced by benzo(a)pyrene may lead to the formation of mutations and as a consequence to the development of diseases. However, it is uncertain whether benzo(a)pyrene causes heritable mutations in male germ cells, which would increase health risks in offspring. In a previous study, benzo(a)pyrene induced DNA damage was observed at all stages of spermatogenesis and in testis. In addition, we observed that spermatogonial stem cells and testis rely, at least in part, on nucleotide excision repair for the removal of this damage, because removal was less efficient in Xpc-/- than in wild type mice. Efficient removal will protect the germ cells against the formation of heritable mutations. By using microarray technology, we investigated in this study the consequences of this difference in DNA adduct removal at the level of gene expression in testis 4 days after a single exposure to benzo(a)pyrene.

2010-08-24 | GSE17979 | GEO

Lack of hepatic response of microRNA in mice following chronic benzo(a)pyrene exposure

Project description:This SuperSeries is composed of the following subset Series: GSE24907: Lack of hepatic response of microRNA in mice following chronic benzo(a)pyrene exposure (gene expression) GSE24909: Lack of hepatic response of microRNA in mice following chronic benzo(a)pyrene exposure (miRNA) Refer to individual Series

2011-10-18 | E-GEOD-24910 | biostudies-arrayexpress

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