Project description:This SuperSeries is composed of the following subset Series: GSE35751: Comparative analysis of S100a10-expressing cortical pyramidal cells and whole cortex GSE35758: Comparative analysis of S100a10 and Glt25d2 cortical pyramidal cells GSE35761: Effect of fluoxetine treatment on translational profiles of S100a10 cortical pyramidal cells GSE35763: Effect of fluoxetine treatment on translational profiles of Glt25d2 cortical pyramidal cells GSE35765: Effect of fluoxetine treatment on translational profiles of S100a10 cortical pyramidal cells in p11 KOs Refer to individual Series
Project description:Our understanding of current treatments for depression, and the development of more specific therapies, is limited by the complexity of the circuits controlling mood and the distributed actions of antidepressants. Although the therapeutic efficacy of serotonin-specific reuptake inhibitors (SSRIs) is correlated with increases in cortical activity, the cell types crucial for their action remain unknown. Here we employ bacTRAP translational profiling to show that layer 5 corticostriatal pyramidal cells expressing p11 (S100a10) are strongly and specifically responsive to chronic antidepressant treatment. This response requires p11 and includes the specific induction of Htr4 expression. Cortex-specific deletion of p11 abolishes behavioral responses to SSRIs, but does not lead to increased depression-like behaviors. Our data identify corticostriatal projection neurons as critical for the response to antidepressants, and suggest that the regulation of serotonergic tone in this single cell type plays a pivotal role in antidepressant therapy.