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17β-estradiol modulates gene expression in the female mouse cerebral cortex
Gwendolyn I Humphreys1, Yvonne S Ziegler1, Ann M Nardulli1
1Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America.
Plos One
|November 6, 2014
Summary
17β-estradiol (E2) influences brain function by altering gene expression in the cerebral cortex. This study reveals E2
Area of Science:
- Neuroscience
- Endocrinology
- Molecular Biology
Background:
- 17β-estradiol (E2) is a key hormone with known effects on inflammation and ischemia in the brain.
- The precise molecular mechanisms underlying E2's actions in the cerebral cortex remain largely unknown.
Purpose of the Study:
- To investigate the molecular mechanisms of 17β-estradiol (E2) in the mouse cerebral cortex.
- To identify genes and pathways regulated by E2 in this brain region.
Main Methods:
- Ovariectomized adult female mice were treated with either oil (control) or E2.
- Cerebral cortical RNA was isolated and analyzed using RNA-sequencing after 7 days.
- Transcriptome analysis identified differentially expressed genes.
Main Results:
- E2 treatment significantly altered the expression of 88 genes in the cerebral cortex.
- Affected genes are involved in synaptic potentiation, myelination, and kinase signaling pathways (MAPK, PI3K).
- E2 also modulated genes related to lipid metabolism, vascular function, cell communication, and histone modification.
Conclusions:
- 17β-estradiol (E2) exerts widespread and diverse effects on the cerebral cortex transcriptome.
- These findings provide insights into E2's role in cortical processes within a dynamic hormonal environment.
- Understanding these mechanisms is crucial for neuroprotection and cognitive function.
