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Series GSE45857 Query DataSets for GSE45857
Status Public on Apr 09, 2013
Title Expression data from bovine liver
Organism Bos taurus
Experiment type Expression profiling by array
Summary Female sex steroid hormones, estradiol-17β (E2) and progesterone (P4) regulate reproductive function and gene expression in a broad range of tissues. Given the central role of the liver in regulating homeostasis including steroid hormone metabolism, we sought to understand how E2-17β and P4 interact to affect global gene expression in liver. Eight ovariectomized cows were randomly assigned to 4 treatment groups applied in a replicated Latin Square design: 1) No hormone supplementation, 2) E2-17β treatment (ear implant), 3) P4 treatment (intravaginal inserts), and 4) E2-17β combined with P4. After 14 d of treatment, liver biopsies were collected, allowing 28 d intervals between periods. Changes in gene expression in the liver biopsies were monitored using Affymetrix bovine-specific arrays. Treatment with E2-17β altered expression of 479 genes, P4 472 genes, and combined treatment significantly altered expression of 468 genes. In total, 578 genes exhibited altered expression including a remarkable number (346 genes) that responded similarly to E2-17β, P4, or combined treatment. Additional evidence for similar gene expression effects of E2-17ß and/or P4 were: principal component analysis placed almost every treatment array at a substantial distance from control arrays; Venn diagrams indicated overall treatment effects for most regulated genes; clustering analysis indicated the two major clusters had all treatments upregulating (cluster 1; 172 genes) or downregulating (cluster 2: 173 genes) expression. Thus, unexpectedly, common biological pathways are regulated by E2-17β and/or P4 in liver. Future studies are needed to elucidate mechanism(s) responsible for overlapping actions of E2-17β and P4 on the liver transcriptome. KEYWORDS: estradiol, progesterone, global gene expression, liver, cows.
 
Overall design randomized Latin square design with 4 treatment groups
 
Contributor(s) Wiltbank MC, Piccinato CA
Citation(s) 24069207
Submission date Apr 08, 2013
Last update date Aug 08, 2019
Contact name Carla A Piccinato
E-mail(s) cpiccinato@uwalumni.com
Organization name Hospital Albert Einstein
Department Instituto de Ensino e Pesquisa Albert Einstein
Lab Centro de Pesquisa Experimental
Street address Rua Albert Einstein, 627- 2SS Bloco A
City São Paulo
State/province SP
ZIP/Postal code 05652-900
Country Brazil
 
Platforms (1)
GPL2112 [Bovine] Affymetrix Bovine Genome Array
Samples (28)
GSM1116700 liver control, biological replication 1
GSM1116701 liver control, biological replication 2
GSM1116702 liver control, biological replication 3
Relations
BioProject PRJNA196507

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Supplementary file Size Download File type/resource
GSE45857_RAW.tar 71.6 Mb (http)(custom) TAR (of CEL)
Processed data included within Sample table

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