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Deepwater Horizon oil spill sediments

ABSTRACT: Deepwater Horizon oil spill sediments Metagenome

PROVIDER: PRJNA796582 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17589674_1.fastq.gz	Fastqsanger.gz
	SRR17589674_2.fastq.gz	Fastqsanger.gz
	SRR17589675_1.fastq.gz	Fastqsanger.gz
	SRR17589675_2.fastq.gz	Fastqsanger.gz
	SRR17589676_1.fastq.gz	Fastqsanger.gz

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Transcriptome response to the Deepwater Horizon oil spill identifies novel candidate genes for oil tolerance in natural populations of the foundation plant Spartina alterniflora

Project description:Genome-wide expression assay of S. alterniflora individuals from populations (4 from Louisiana, 2 from Mississippi) either exposed or unexposed to the Deepwater Horizon oil spill

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MicroRNA profiles in red drum (Sciaenops ocellatus) larvae exposed to Deepwater Horizon oil

Project description:Purpose:To help identify molecular regulatory mechanisms of developmental toxicity for fish exposed to Deepwater Horizon (DWH) oil, microRNA profiles in red drum larvae exposed to different DWH oils (source/mass and artificially weathered oil) were evaluated using High Throughput Sequencing (HTS). Methods:Total microRNA profiles of 48 hpf red drum larvae after source oil (0.135%, 0.27%, and 0.54%) and slick oil (1.25%, 2.5% and 5%) exposure were generated by deep sequencing, in triplicate, using Illumina NextSeq 500. Results: Source and slick oil significantly dysregulated the expression of miR-18a, miR-27b, and miR-203a across all exposure concentrations. The target genes of these miRNAs were predominantly involved in the neuro-cardio system development processes and associated key signaling pathways such as axonal guidance signaling, CREB signaling in neurons, synaptic long-term potentiation pathway, calcium signaling and role of NFAT in cardiac hypertrophy.

2019-01-09 | GSE120670 | GEO

Dose-responsive microRNA profiles in mahi-mahi (Coryphaena hippurus) larvae exposed to Deepwater Horizon oil

Project description:Purpose: To help identify molecular regulatory mechanisms of developmental toxicity for fish exposed to Deepwater Horizon (DWH) oil, microRNA profiles in mahi-mahi (Coryphaena hippurus) larvae exposed to different DWH oils (source/mass and artificially weathered oil) were evaluated using High Throughput Sequencing (HTS). Methods: Total microRNA profiles of 48 hpf mahi-mah larvae after slick (0.5%, 1%, and 2%) and source/mass oil (0.125%, 0.25% and 5%) exposure were generated by deep sequencing, in triplicate, using Illumina NextSEQ v2. Results: Among over 100 significant DE miRNAs, DE miRNAs that were inversely correlated with target mRNAs after slick and source oil exposure were identfied. miR-34b, miR-181b, miR-23b, and miR-203a responsive to both slick and source oil exposure were further filtered to predict downstream biological functions. The target genes of these four miRNAs were involved AhR signaling, Cardiac β-adrenergic signaling, nNOS signaling in neurons, xenobiotic metabolism signaling, p53 signaling, cell cycle regulation, etc., as well as potential diseases including cardiovascular disease, neurological disease, developmental disorder, ophthalmic disease, metabolism disease, etc.

2019-02-20 | GSE116711 | GEO

Dose-responsive transcriptomic profiles in red drum (Sciaenops ocellatus) larvae exposed to Deepwater Horizon oil

Project description:Purpose:To help identify molecular mechanisms and pathways potentially involved in the developmental toxicity for estuary fish exposed to different concentrations of Deepwater Horizon (DWH) oil, transcriptomic profiles in red drum (Sciaenops ocellatus) embryos exposed to different DWH oils (source/mass and artificially weathered oil) were evaluated using High Throughput Sequencing (HTS). Methods:Total mRNA profiles of 48 hpf red drum larvae after slick (1.25%, 2.5%, and 5%) and source/mass oil (0.135%, 0.27% and 0.54%) exposure were generated by deep sequencing, in triplicate, using Illumina NextSEQ v2. Results:To determine the potential biological impact of oil exposure at system level, a gene ontology (GO) term analysis on biological processes (BPs) was conducted by analyzing the DEGs using DAVID. After exposure to source oil, the top enriched biological processes were terms associated with oxidation-reduction process, metabolic process (e.g. steroid), and organism development. Similar biological processes were also among the most significant biological processes by slick oil exposure. Among the top biological process list a significant number of nervous system related terms were highly enriched by both source and slick oil exposure, including midbrain development, motor neuron axon guidance, nervous system development, eye development, neuron development, neuron differentiation etc.

2019-01-09 | GSE119934 | GEO

Transcriptomic responses to Deepwater Horizon oil in mahi-mahi (Coryphaena hippurus) embryos reveals time and oil-dependent linkages between molecular initiating events and developmental toxicity

Project description:Purpose:To help identify molecular mechanisms and pathways potentially involved in the developmental toxicity for fish exposed to Deepwater Horizon (DWH) oil, transcriptomic profiles in mahi-mahi (Coryphaena hippurus) embryos exposed to different DWH oils (source and artificially weathered oil) were evaluated at different critical windows of development using High Throughput Sequencing (HTS). Methods:Total mRNA profiles of 24, 48, 96 hpf mahi-mahi larvae after slick and source oil exposure were generated by deep sequencing, in triplicate, using Illumina HiSeq2500. qRTâPCR validation was performed using SYBR Green assays. Results: Exposure to slick oil induced more pronounced changes in gene expression over time than did exposure to source oil. Predominant transcriptomic responses included alteration of E1F2 signaling, steroid biosynthesis, ribosome biogenesis, perturbation in eye development and peripheral nervous, and activation of P450 pathway. Comparisons of changes of cardiac / Ca2+-associated genes with phenotypic responses revealed reduced heart rate and increased pericardial edema in larvae exposed to slick oil but not source oil. Total mRNA profiles of 24, 48, 96 hpf mahi-mahi larvae after slick and source (mass) oil exposure were generated by deep sequencing, in triplicate, using Illumina HiSeq2500.

2016-07-07 | E-GEOD-79675 | biostudies-arrayexpress

Transcriptomic responses to Deepwater Horizon oil in mahi-mahi (Coryphaena hippurus) embryos reveals time and oil-dependent linkages between molecular initiating events and developmental toxicity

Project description:Purpose:To help identify molecular mechanisms and pathways potentially involved in the developmental toxicity for fish exposed to Deepwater Horizon (DWH) oil, transcriptomic profiles in mahi-mahi (Coryphaena hippurus) embryos exposed to different DWH oils (source and artificially weathered oil) were evaluated at different critical windows of development using High Throughput Sequencing (HTS). Methods:Total mRNA profiles of 24, 48, 96 hpf mahi-mahi larvae after slick and source oil exposure were generated by deep sequencing, in triplicate, using Illumina HiSeq2500. qRT–PCR validation was performed using SYBR Green assays. Results: Exposure to slick oil induced more pronounced changes in gene expression over time than did exposure to source oil. Predominant transcriptomic responses included alteration of E1F2 signaling, steroid biosynthesis, ribosome biogenesis, perturbation in eye development and peripheral nervous, and activation of P450 pathway. Comparisons of changes of cardiac / Ca2+-associated genes with phenotypic responses revealed reduced heart rate and increased pericardial edema in larvae exposed to slick oil but not source oil.

2016-07-07 | GSE79675 | GEO

Microarray data from zebrafish embryos (ZFE) exposed for 48-hr periods to oil emulsions collected from GoM shoreline sites following the Deepwater Horizon blowout.

Project description:Zebrafish embryos/larvae are a choice model system for studying early stages of vertebrate development and how these stages can be perturbed by environmental stressors. Petrochemical combustion products elicit developmental toxicity that is associated with transcriptome changes in zebrafish embryos (ZFE). We used microarrays to characterize transcriptome changes in ZFE that had been exposed in the laboratory to oil emulsions collected from the GoM shoreline, ~9 weeks after the Deepwater Horizon blowout.

2013-12-03 | GSE52873 | GEO

BP oil spill field study 2010

Project description:BP oil spill field study 2010

2011-10-20 | E-MTAB-663 | biostudies-arrayexpress

Dose-responsive transcriptomic profiles in mahi-mahi (Coryphaena hippurus) larvae exposed to Deepwater Horizon oil (mRNA profiles)

Project description:Purpose:To help identify molecular mechanisms and pathways potentially involved in the developmental toxicity for fish exposed to different concentrations of Deepwater Horizon (DWH) oil, transcriptomic profiles in mahi-mahi (Coryphaena hippurus) embryos exposed to different DWH oils (source and artificially weathered oil) were evaluated using High Throughput Sequencing (HTS). Methods:Total mRNA profiles of 48 hpf mahi-mah larvae after slick (0.5%, 1%, and 2%) and source/mass oil (0.125%, 0.25% and 5%) exposure were generated by deep sequencing, in triplicate, using Illumina NextSEQ v2. Results:To determine the potential biological impact of oil exposure at system level, a gene ontology (GO) term analysis on biological processes (BPs) was conducted by analyzing the DEGs using ToppGene. The profile of BPs was dose- and oil type- dependent. After exposure to 0.125% slick oil, the top enriched biological processes were RNA processing and RNA metabolism terms. Metabolic and catabolic process and terms associated with embryo development were some of the most enriched BPs at 0.25% slick oil. The top enriched BPs at 0.5% slick oil were organic acid metabolic process and cardiovascular system development. For source oil, cell cycle process, metabolic process, and RNA processing were the most enriched by 0.125% source oil exposure, which were also highly enriched by 0.25% source oil exposure, while more ‘response’ BPs were enriched by 0.25% source oil exposure, such as regulation of response to stress, response to endogenous stimulus, response to hormone, cellular response to light stimulus, etc. The most significantly enrich BP by 0.5% source oil was cardiovascular system development followed by organic acid metabolic process and cell junction assembly.

2019-02-20 | GSE116639 | GEO

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