Gómez-Sotres, PaulaSkupio, UrszulaDalla Tor, TommasoJulio-Kalajzić, FranciscaCannich, AstridGisquet, DorianeBonilla-Del Río, ItziarDrago, FilippoPuente, NagoreGrandes, PedroBellocchio, LuigiBusquets Garcia, Arnau, 1985-Bains, Jaideep S.Marsicano, Giovanni2025-07-082025-07-082024Gómez-Sotres P, Skupio U, Dalla Tor T, Julio-Kalajzic F, Cannich A, Gisquet D, et al. Olfactory bulb astrocytes link social transmission of stress to cognitive adaptation in male mice. Nat Commun. 2024 Aug 18;15(1):7103. DOI: 10.1038/s41467-024-51416-42041-1723http://hdl.handle.net/10230/70857Emotions and behavior can be affected by social chemosignals from conspecifics. For instance, olfactory signals from stressed individuals induce stress-like physiological and synaptic changes in naïve partners. Direct stress also alters cognition, but the impact of socially transmitted stress on memory processes is currently unknown. Here we show that exposure to chemosignals produced by stressed individuals is sufficient to impair memory retrieval in unstressed male mice. This requires astrocyte control of information in the olfactory bulb mediated by mitochondria-associated CB1 receptors (mtCB1). Targeted genetic manipulations, in vivo Ca2+ imaging and behavioral analyses reveal that mtCB1-dependent control of mitochondrial Ca2+ dynamics is necessary to process olfactory information from stressed partners and to define their cognitive consequences. Thus, olfactory bulb astrocytes provide a link between social odors and their behavioral meaning.application/pdfeng© The Author(s) 2024. Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.info:eu-repo/semantics/articlehttp://dx.doi.org/10.1038/s41467-024-51416-4AstrocyteOlfactory bulbStress and resilienceinfo:eu-repo/semantics/openAccess