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Acute social isolation alters synaptic plasticity in lateral habenula and social decision

GSE200082 Mus musculus Expression profiling by high throughput sequencing 4 samples Submitted 2024/04/30 Platform GPL24247
Summary
The lateral habenula (LHb) is an essential hub brain region modulating the monoamine system such as dopamine, serotonin. Hyperactivity of LHb has implications for psychiatric disorders such as depression, anxiety, and schizophrenia, which are commonly associated with social dysfunction. However, the role of LHb in social behavior has remained elusive. Here, we find that experiencing acute social isolation affects synaptic function in LHb and social behavior. After acute social isolation, long-term depression (LTD) in LHb is impaired and rescued by activating the 5-HT4 receptor (5-HT4R). Indeed, Htr4 expression in LHb is up-regulated following acute social isolation. Finally, acute social isolation enhances the social preference for familiars such as housing-mates to stranger conspecifics. Consistent with electrophysiological results, pharmacological activation of 5-HT4R in LHb restored innate social preference. These results suggest that acute social isolation influences social decisions with 5-HT4R-dependent synaptic modification in LHb.
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Also filed as BioProject PRJNA822836 and SRA study SRP367358. Searching any of these in the dataset finder brings you back here.

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