Journal
CELL
Volume 179, Issue 3, Pages 713-+Publisher
CELL PRESS
DOI: 10.1016/j.cell.2019.09.020
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Funding
- US National Institutes of Health (NIH) BRAIN Initiative [U01MH105982, U19MH114830]
- Howard Hughes Medical Institute International Student Research Fellowship
- NIH [MH070053, TR01 OD024686]
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The ventrolateral subdivision of the ventromedial hypothalamus (VMHvl) contains similar to 4,000 neurons that project to multiple targets and control innate social behaviors including aggression and mounting. However, the number of cell types in VMHvl and their relationship to connectivity and behavioral function are unknown. We performed single-cell RNA sequencing using two independent platforms-SMART-seq (similar to 4,500 neurons) and 10x (similar to 78,000 neurons)-and investigated correspondence between transcriptomic identity and axonal projections or behavioral activation, respectively. Canonical correlation analysis (CCA) identified 17 transcriptomic types (T-types), including several sexually dimorphic clusters, the majority of which were validated by seqFISH. Immediate early gene analysis identified T-types exhibiting preferential responses to intruder males versus females but only rare examples of behavior-specific activation. Unexpectedly, many VMHvl T-types comprise a mixed population of neurons with different projection target preferences. Overall our analysis revealed that, surprisingly, few VMHvl T-types exhibit a clear correspondence with behavior-specific activation and connectivity.
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