| First Author | Brami-Cherrier K | Year | 2020 |
| Journal | Nat Commun | Volume | 11 |
| Issue | 1 | Pages | 4448 |
| PubMed ID | 32895370 | Mgi Jnum | J:296494 |
| Mgi Id | MGI:6467868 | Doi | 10.1038/s41467-020-18200-6 |
| Citation | Brami-Cherrier K, et al. (2020) Cocaine-mediated circadian reprogramming in the striatum through dopamine D2R and PPARgamma activation. Nat Commun 11(1):4448 |
| abstractText | Substance abuse disorders are linked to alteration of circadian rhythms, although the molecular and neuronal pathways implicated have not been fully elucidated. Addictive drugs, such as cocaine, induce a rapid increase of dopamine levels in the brain. Here, we show that acute administration of cocaine triggers reprogramming in circadian gene expression in the striatum, an area involved in psychomotor and rewarding effects of drugs. This process involves the activation of peroxisome protein activator receptor gamma (PPARgamma), a nuclear receptor involved in inflammatory responses. PPARgamma reprogramming is altered in mice with cell-specific ablation of the dopamine D2 receptor (D2R) in the striatal medium spiny neurons (MSNs) (iMSN-D2RKO). Administration of a specific PPARgamma agonist in iMSN-D2RKO mice elicits substantial rescue of cocaine-dependent control of circadian genes. These findings have potential implications for development of strategies to treat substance abuse disorders. |
