Transcriptomic mapping of the 5-HT receptor landscape.
Level 5 - mechanism / opinion, no new human data
Basic animal science transcriptomic atlas using mouse brain datasets.
PubMed 39569210 · doi:10.1016/j.patter.2024.101048
What was done
Researchers analyzed single-cell RNA sequencing (scRNA-seq) data from approximately 4 million adult mouse brain cells (Allen Institute) to profile transcript levels for all 14 serotonin receptor (Htr) subtypes. They mapped spatial transcriptomic distributions across approximately 10 million cells using a multiplexed error-robust fluorescence in situ hybridization (MERFISH) dataset from Harvard University.
What was found
Differential transcription patterns were identified for all 14 Htr subtypes across various brain cell classes. Across the dataset, 65.84% of cells transcribed RNA for at least one Htr, with frequent co-transcription of multiple Htr subtypes within individual cells. Spatial mapping corroborated known localization patterns and identified previously uncharacterized transcription distributions.
Why it matters
This study provides a high-resolution, cell-type-specific, and spatial expression atlas of the entire 5-HT receptor family in the mouse brain, clarifying combinatorial receptor transcription across distinct neural populations.
Limits
The findings are derived entirely from adult mouse brain tissue and may not fully generalize to human neurobiology. The analyses rely on RNA transcript detection without quantifying translated protein levels, receptor membrane trafficking, or downstream functional signaling.
Cited by
- supports There are 14 distinct serotonin receptor subtypes.