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Global gene expression analysis of fresh-frozen, furan-exposed mouse liver using RNA-seq [ribo-depletion]

ABSTRACT: Furan is a mouse and rat hepatocarcinogen. We sought to determine if furan-induced gene expression changes could be detected in paired fresh-frozen and formalin-fixed paraffin embedded (FFPE) samples using RNA-seq (ribo-depletion protocol). All samples in this study (fresh-frozen, 18 hours in formalin, 3 weeks in formalin) were also examined using one- and two-colour microarrays and RNA-seq (polyA-enrichment protocol) in order to determine the effect of the technology on gene expression profiles.

ORGANISM(S): Mus musculus

PROVIDER: GSE64370 | GEO | 2015/10/14

SECONDARY ACCESSION(S): PRJNA270848

REPOSITORIES: GEO

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Global gene expression analysis of fresh-frozen, furan-exposed mouse liver using RNA-seq [polyA enrichment]

Project description:Furan is a mouse and rat hepatocarcinogen. We sought to determine if furan-induced gene expression changes could be detected in paired fresh-frozen and formalin-fixed paraffin embedded (FFPE) samples using RNA-seq (polyA-enrichment protocol). All samples in this study (fresh-frozen, 18 hours in formalin, 3 weeks in formalin) were also examined using one- and two-colour microarrays and RNA-seq (ribo-depletion protocol) in order to determine the effect of the technology on gene expression profiles.

2015-10-14 | GSE64371 | GEO

Global gene expression analysis of fresh-frozen, furan-exposed mouse liver using one-colour Agilent microarrays

Project description:Furan is a mouse and rat hepatocarcinogen. We sought to determine if furan-induced gene expression changes could be detected in paired fresh-frozen and formalin-fixed paraffin embedded (FFPE) samples using one-colour microarrays. All samples in this study (fresh-frozen, 18 hours in formalin, 3 weeks in formalin) were also examined using two-colour microarrays and RNA-seq (ribo-depletion and polyA-enrichment protocols) in order to determine the effect of the technology on gene expression profiles.

2015-10-14 | GSE62842 | GEO

Global gene expression analysis of formalin-fixed paraffin-embedded (FFPE), furan-exposed mouse liver using one-colour Agilent microarrays

Project description:Furan is a mouse and rat hepatocarcinogen. We sought to determine if furan-induced gene expression changes could be detected in paired fresh-frozen and formalin-fixed paraffin embedded (FFPE) samples using one-colour microarrays. To determine the effect of time-in-formalin on gene expression signatures we performed microarray analysis of livers that were fixed in formalin for 18 hours or 3 weeks. All samples (fresh-frozen, 18 hours in formalin, 3 weeks in formalin) were also examined using two-colour microarrays and RNA-seq (ribo-depletion and polyA-enrichment protocols) in order to determine the effect of the technology on gene expression profiles.

2015-10-14 | GSE62840 | GEO

Global gene expression analysis of formalin-fixed paraffin-embedded (FFPE), furan-exposed mouse liver using two-colour Agilent microarrays

Project description:Furan is a mouse and rat hepatocarcinogen. We sought to determine if furan-induced gene expression changes could be detected in paired fresh-frozen (GSE48644) and formalin-fixed paraffin embedded (FFPE; this study) samples using two-colour microarrays. To determine the effect of time-in-formalin on gene expression signatures we performed microarray analysis of livers that were fixed in formalin for 18 hours or 3 weeks. All samples (fresh-frozen, 18 hours in formalin, 3 weeks in formalin) were also examined using one-colour microarrays and RNA-seq (ribo-depletion and polyA-enrichment protocols) in order to determine the effect of the technology on gene expression profiles.

2015-10-14 | GSE62838 | GEO

The effect of BrdU on gene expression profiles of B6C3F1 mice treated with furan

2014-07-01 | GSE54078 | GEO

The effect of BrdU on gene expression profiles of B6C3F1 mice treated with furan

Project description:Furan is a mouse and rat hepatocarcinogen. We sought to determine the dose-dependent changes in gene expression upon exposure of B6C3F1 mice to furan in order to better understand furan’s mode of action. In this study we examined the transcriptional response in liver tissue of female B6C3F1 mice to BrdU treatment (in drinking water for 5 days before sacrifice). This was a toxicogenomic study in which mice were also exposed to 0, 1 or 8 mg/kg bw furan (by oral gavage) for 3 weeks. Mice were sacrificed four hours after the final furan exposure. Each dose group had 4-5 biological replicates. We used a two-colour reference design and SurePrint G3 Mouse GE 8x60K microarrays (Agilent). Please note that data for all non-BrdU treated animals was previously reported in GEO [GSE48644]. All samples (with or without BrdU) were part of the same randomized block design for the microarrays.

2014-07-01 | E-GEOD-54078 | biostudies-arrayexpress

Cell death and regenerative proliferation pathways in hepatocellular carcinoma: The effect of furan on B6C3F1 mouse global gene expression in liver

Project description:Furan is a mouse and rat hepatocarcinogen. We sought to determine the dose-dependent changes in gene expression upon exposure of B6C3F1 mice to furan in order to better understand furan’s mode of action. Adult female B6C3F1 mice were exposed to 1, 2, 4 or 8 mg/kg bw furan or vehicle control (corn oil) for three weeks and sacrificed four hours after the final exposure. In this study we examined the transcriptional response in liver tissue of female B6C3F1 mice exposed to furan for 3 weeks at four different doses: 1, 2, 4 or 8 mg/kg bw furan (or vehicle control) and sacrificed four hours after the final exposure. Each dose group had 4-5 biological replicates. There were a total of 25 samples included in the final analysis. We used a two-colour reference design and SurePrint G3 Mouse GE 8x60K microarrays (Agilent).

2014-01-10 | E-GEOD-48644 | biostudies-arrayexpress

Cell death and regenerative proliferation pathways in hepatocellular carcinoma: The effect of furan on B6C3F1 mouse global gene expression in liver

Project description:Furan is a mouse and rat hepatocarcinogen. We sought to determine the dose-dependent changes in gene expression upon exposure of B6C3F1 mice to furan in order to better understand furan’s mode of action. Adult female B6C3F1 mice were exposed to 1, 2, 4 or 8 mg/kg bw furan or vehicle control (corn oil) for three weeks and sacrificed four hours after the final exposure.

2014-01-10 | GSE48644 | GEO

miRNA experiment of fresh frozen colonic biopsy samples

Project description:The aim of the present study was to perform an additional global miRNA microarray analysis of tubular and tubulovillous adenoma biopsy specimen completed with colorectal adenocarcinomas using fresh frozen tisse

2016-10-19 | GSE83924 | GEO

Whole genome bisulfite sequencing and Infinium Mouse Methylation BeadChip using fresh and fresh-frozen mouse epidermis (WGBS)

Project description:We compared the global DNA methylation levels of hairless mouse epidermis using the Infinium Mouse Methylation BeadChip from Illumina and whole genome bisulfite sequencing (WGBS). We also studied the effect of sample storage conditions by using fresh and fresh-frozen epidermis. The DNA methylation levels of xxx,xxx CpG sites covered by both the BeadChip and WGBS were compared. DNA methylation levels obtained with WGBS and the BeadChip were strongly correlated (Pearson correlation r = 0.984). We applied a threshold of 15 reads for the WGBS methylation analysis. Even at a threshold of 10 reads, we observed no substantial difference in DNA methylation levels compared with that obtained with the BeadChip. The DNA methylation levels from the fresh and the fresh-frozen samples were strongly correlated when analysed with both the BeadChip (r = 0.996) and WGBS (r = 0.994). We conclude that the two methods of analysis generally work equally well for studies of DNA methylation of mouse epidermis and find that fresh and fresh-frozen epidermis can generally be used equally well. The choice of method will depend on the specific study’s aims and the available resources in the laboratory.

2022-09-23 | GSE213747 | GEO

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