An amygdala-to-hypothalamus circuit for social reward
Top Cited Papers
- 4 April 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Nature Neuroscience
- Vol. 24 (6), 831-842
- https://doi.org/10.1038/s41593-021-00828-2
Abstract
Social interactions and relationships are often rewarding, but the neural mechanisms through which social interaction drives positive experience remain poorly understood. In this study, we developed an automated operant conditioning system to measure social reward in mice and found that adult mice of both sexes display robust reinforcement of social interaction. Through cell-type-specific manipulations, we identified a crucial role for GABAergic neurons in the medial amygdala (MeA) in promoting the positive reinforcement of social interaction. Moreover, MeA GABAergic neurons mediate social reinforcement behavior through their projections to the medial preoptic area (MPOA) and promote dopamine release in the nucleus accumbens. Finally, activation of this MeA-to-MPOA circuit can robustly overcome avoidance behavior. Together, these findings establish the MeA as a key node for regulating social reward in both sexes, providing new insights into the regulation of social reward beyond the classic mesolimbic reward system.Keywords
Funding Information
- UC | UCLA | David Geffen School of Medicine, University of California, Los Angeles (Marion Bowen Postdoctoral Grant)
- U.S. Department of Health & Human Services | NIH | National Institute of Neurological Disorders and Stroke (R01NS113124)
- Kinship Foundation (Searle Scholars Award)
- Esther A. and Joseph Klingenstein Fund (Klingenstein-Simons Fellowship)
- David and Lucile Packard Foundation (Fellowship)
- McKnight Endowment Fund for Neuroscience (Scholar Award)
- W. M. Keck Foundation (Junior Faculty Award)
- Vallee Foundation (N/A)
- Edward Mallinckrodt, Jr. Foundation (N/A)
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