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Your Environment. Your Health.

Boston University: Dataset Details, ID=E-GEOD-5072

Superfund Research Program

The Long-term Impacts of Early Life Exposure to Superfund Chemicals in Humans and Wildlife

Center Director: David H. Sherr
Grant Number: P42ES007381
Funding Period: 1995-2020
View this project in the NIH Research Portfolio Online Reporting Tools (RePORT)

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Title: Sex-dependent and STAT5b-dependent Liver Gene Expression

Accession Number: E-GEOD-5072

Link to Dataset: http://www.ebi.ac.uk/arrayexpress/experiments/E-GEOD-5072/

Repository: ArrayExpress

Data Type(s): Gene Expression

Experiment Type(s): Unknown experiment type

Organism(s): Mus musculus

Summary: A series of dual-channel gene expression profiles obtained using Rosetta/Merck Mouse TOE 75k microarrays was used to examine the sex-dependent and STAT5b-dependent differences in gene expression in adult mouse liver. This series is comprised of 4 pools of 3 randomly chosen independent wildtype male and female mouse liver cDNA samples and 4 pools of 3 randomly chosen independent STAT5b-deficient male and female mouse liver cDNA samples, totaling 16 pools. The pools were paired randomly to generate 4 comparisons of M-WT:F-WT, M-WT:M-KO, F-KO:F-WT, and F-KO:M-KO. Comparison of the set of sex-dependent genes with the set of genes responsive to the loss of STAT5b in males shows that 75 of the sex-specific genes were also regulated by STAT5b in males. Only 20 of the sex-specific genes retained sex-specificity in the absence of STAT5b, indicating a large role for STAT5b in sex-specific liver gene expression. A pool of cDNA from 3 mice is Cy3-labeled and compared to another pool of cDNA from 3 mice that is Cy5-labeled. The pools are then dye-swapped and compared again. The two pairs of data are averaged together, the averages are normalized across the fluorescent reverse pairings, and the log2 value is reported for each average as well as the anti-log. This is replicated 3 times with independent pools of cDNA for each pair of conditions being compared. There are a total of 4 pairs of conditions compared for a grand total of 12 samples.

Publication(s) associated with this dataset:
  • Clodfelter KH, Holloway MG, Hodor P, Park S, Ray WJ, Waxman DJ. 2006. Sex-dependent liver gene expression is extensive and largely dependent upon signal transducer and activator of transcription 5b (STAT5b): STAT5b-dependent activation of male genes and repression of female genes revealed by microarray analysis. Mol Endocrinol 20(6):1333-1351. doi:10.1210/me.2005-0489 PMID:16469768
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