De Backer, Jean-FrançoisMonlezun, StéphanieDetraux, BérangèreGazan, AdelineVanopdenbosch, LauraCheron, JulianCannazza, GiuseppeValverde, SébastienCantacorps Centellas, Lídia, 1991-Nassar, MérieVenance, LaurentValverde Granados, OlgaFaure, PhilippeZoli, MicheleDe Backer, OlivierGall, DavidSchiffmann, Serge N.de Kerchove d'Exaerde, Alban2019-04-052019-04-052018De Backer JF, Monlezun S, Detraux B, Gazan A, Vanopdenbosch L, Cheron J et al. Deletion of Maged1 in mice abolishes locomotor and reinforcing effects of cocaine. EMBO Rep. 2018;19(9):e45089. DOI: 10.15252/embr.2017450891469-221Xhttp://hdl.handle.net/10230/37044Melanoma antigen genes (Mage) were first described as tumour markers. However, some of Mage are also expressed in healthy cells where their functions remain poorly understood. Here, we describe an unexpected role for one of these genes, Maged1, in the control of behaviours related to drug addiction. Mice lacking Maged1 are insensitive to the behavioural effects of cocaine as assessed by locomotor sensitization, conditioned place preference (CPP) and drug self-administration. Electrophysiological experiments in brain slices and conditional knockout mice demonstrate that Maged1 is critical for cortico-accumbal neurotransmission. Further, expression of Maged1 in the prefrontal cortex (PFC) and the amygdala, but not in dopaminergic or striatal and other GABAergic neurons, is necessary for cocaine-mediated behavioural sensitization, and its expression in the PFC is also required for cocaine-induced extracellular dopamine (DA) release in the nucleus accumbens (NAc). This work identifies Maged1 as a critical molecule involved in cellular processes and behaviours related to addiction.application/pdfengThis is the pre-peer reviewed version of the following article: De Backer JF, Monlezun S, Detraux B, Gazan A, Vanopdenbosch L, Cheron J, Cannazza G, Valverde S, Cantacorps L, Nassar M, Venance L, Valverde O, Faure P, Zoli M, De Backer O, Gall D, Schiffmann SN, de Kerchove d'Exaerde A. Deletion of Maged1 in mice abolishes locomotor and reinforcing effects of cocaine. EMBO Rep. 2018; 19(9):e45089. DOI 10.15252/embr.201745089, which has been published in final form at http://dx.doi.org10.15252/embr.201745089. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.info:eu-repo/semantics/articlehttp://dx.doi.org/10.15252/embr.201745089AmygdalaDopamineDrug sensitizationNucleus accumbensPrefrontal cortexinfo:eu-repo/semantics/openAccess