Title |
Repeated Clozapine Increases the Level of Serotonin 5-HT1AR Heterodimerization with 5-HT2A or Dopamine D2 Receptors in the Mouse Cortex
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Published in |
Frontiers in Molecular Neuroscience, February 2018
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DOI | 10.3389/fnmol.2018.00040 |
Pubmed ID | |
Authors |
Marta Szlachta, Maciej Kuśmider, Paulina Pabian, Joanna Solich, Magdalena Kolasa, Dariusz Żurawek, Marta Dziedzicka-Wasylewska, Agata Faron-Górecka |
Abstract |
G-protein-coupled receptor (GPCR) heterodimers are new targets for the treatment of schizophrenia. Dopamine D2receptors and serotonin 5-HT1Aand 5-HT2Areceptors play an important role in neurotransmission and have been implicated in many human psychiatric disorders, including schizophrenia. Therefore, in this study, we investigated whether antipsychotic drugs (clozapine (CLZ) and haloperidol (HAL)) affected the formation of heterodimers of D2-5-HT1Areceptors as well as 5-HT1A-5-HT2Areceptors. Proximity ligation assay (PLA) was used to accurately visualize, for the first time, GPCR heterodimers both atin vitroandex vivolevels. In line with our previous behavioral studies, we used ketamine to induce cognitive deficits in mice. Our study confirmed the co-localization of D2/5-HT1Aand 5-HT1A/5-HT2Areceptors in the mouse cortex. Low-dose CLZ (0.3 mg/kg) administered repeatedly, but not CLZ at 1 mg/kg, increased the level of D2-5-HT1Aand 5-HT1A-5-HT2Aheterodimers in the mouse prefrontal and frontal cortex. On the other hand, HAL decreased the level of GPCR heterodimers. Ketamine affected the formation of 5-HT1A-5-HT2A, but not D2-5-HT1A, heterodimers. |
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