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Accession IconGSE100002

Molecular and functional sex differences of noradrenergic neurons in the mouse locus coeruleus [Affymetrix]

Organism Icon Mus musculus
Sample Icon 3 Downloadable Samples
Technology Badge Icon Affymetrix Mouse Genome 430 2.0 Array (mouse4302)

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Preclinical work has long focused only on male animals, even though sexual divergence in both baseline behaviors and drug responses clearly impact treatment outcomes in patients. Psychiatric disorders are notably divergent, with males showing higher prevalence of ADHD and ASD, and females GAD and MDD. This divergence is reflected in quantitative differences in subclincal behaviors. The Noradrenergic neurotransmitter system is targeted by many psychiatric drugs, but is relatively uncharacterized at a molecular level. We developed a mouse to profile these neurons, defining their both a baseline transcriptome, including druggable receptors, and their molecular response to stimulation. We also discovered a remarkable sexual divergence in their gene expression, including functionally increased expression of the EP3 receptor in females a difference that can be used to modulate stress-induced anxiety in a sex specific manner. These findings underscore the need to conduct preclinical studies in a manner balanced for sex, and suggest that baseline differences in noradrenergic neurons could underlay sexually divergent behaviors.
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