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Series GSE9371 Query DataSets for GSE9371
Status Public on Oct 19, 2007
Title Estrogen receptors alpha and beta mediation of gene expression in mouse vascular tissue
Organism Mus musculus
Experiment type Expression profiling by array
Summary Estrogen plays an important role in the regulation of vascular tone and in the pathophysiology of cardiovascular disease. Physiological effects of estrogen are mediated through estrogen receptors alpha (ERalpha) and beta (ERbeta), which are both expressed in vascular smooth muscle and endothelial cells. However, the molecular pathways mediating estrogen effects in blood vessels are not well defined. We have performed gene expression profiling in the mouse aorta to identify comprehensive gene sets the expression of which is regulated by long-term (1 wk) estrogen treatment. The ER subtype dependence of the alterations in gene expression was characterized by parallel gene expression profiling experiments in ERalpha-deficient [ERalpha knockout (ERalphaKO)] and ERbeta-deficient (ERbetaKO) mice.
Importantly, these data revealed that ERalpha- and ERbeta-dependent pathways regulate distinct and largely nonoverlapping sets of genes. Whereas ERalpha is essential for most of the estrogen-mediated increase in gene expression in wild-type aortas, ERbeta mediates the large majority of estrogen-mediated decreases in gene expression. Biological functions of the estrogen-regulated genes include extracellular matrix synthesis, in addition to electron transport in the mitochondrion and reactive oxygen species pathways. Of note, the estrogen/ERbeta pathway mediates down-regulation of mRNAs for nuclear-encoded subunits in each of the major complexes of the mitochondrial respiratory chain. Several estrogen-regulated genes also encode transcription factors. Overall, these findings provide a foundation for understanding the molecular basis for estrogen effects on vasculature gene expression.
Keywords: estrogen, estrogen receptor knockout, gene expression, mouse aorta
 
Overall design Six estrogen receptor alpha knockout (ERaKO) and six estrogen receptor beta knockout (ERbKO) mice and ten of their wild-type littermates (all female, 2.5-4.5 months of age) were ovarioectomized. Half the mice from each genotype were implanted with 17beta-estradiol pellets, the other half with placebo pellets. After 7-8 days of estrogen/placebo treatment, aortas were harvested, total RNAs were purified for Affymetrix GeneChip microarray analysis, without pooling. This experiment consists of 6 groups with 3 (ERaKO and ERbKO) or 5 (WT) biological replicates per group, for a total of 22 samples.
 
Contributor(s) O'Lone R, Knorr K, Jaffe IZ, Schaffer ME, Martini PG, Karas RH, Bienkowska J, Mendelsohn ME, Hansen U
Citation(s) 17374850
Submission date Oct 18, 2007
Last update date Feb 11, 2019
Contact name Ulla Hansen
E-mail(s) uhansen@bu.edu
Organization name Boston University
Department Biology
Lab Hansen Lab
Street address 5 Cummington St
City Boston
State/province MA
ZIP/Postal code 02215
Country USA
 
Platforms (1)
GPL1261 [Mouse430_2] Affymetrix Mouse Genome 430 2.0 Array
Samples (22)
GSM238478 Wild type mouse aorta with placebo, biological rep1
GSM238479 Wild type mouse aorta with placebo, biological rep2
GSM238480 Wild type mouse aorta with placebo, biological rep3
Relations
BioProject PRJNA103077

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Supplementary file Size Download File type/resource
GSE9371_Limma_analysis.txt 12.0 Mb (ftp)(http) TXT
GSE9371_RAW.tar 76.2 Mb (http)(custom) TAR (of CEL)
Raw data provided as supplementary file
Processed data included within Sample table

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