Journal
ADDICTION BIOLOGY
Volume 18, Issue 3, Pages 452-454Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1369-1600.2011.00409.x
Keywords
Cocaine; conditioned place preference; DNA methylation; monkeys; NK3-receptor; TACR3
Categories
Funding
- CAPES/DAAD/PROBAL [324/09]
- CNPq/Brazil [471083/2008-9, 578999/2008-0, 311621/2009-0]
- FAP-DF/Brazil [193.000.453/2008]
- Deutsche Forschungsgemeinschaft [DE 792/4-1]
- MRC-SGDP Centre, Institute of Psychiatry, King's College London (UK)
- University of Erlangen-Nuremberg
- ERA-Net NEURON
- Medical Research Council [G9817803B] Funding Source: researchfish
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Epigenetic processes have been implicated in neuronal plasticity following repeated cocaine application. Here we measured DNA methylation at promoter CpG sites of the dopamine transporter (DAT1) and serotonin transporter (SERT) and neurokinin3-receptor (NK3-R)-receptor (TACR3) coding genes in marmoset monkeys after repeated cocaine injections in a conditioned place preference paradigm. We found a decrease in DNA methylation at a specific CpG site in TACR3, but not DAT1 or SERT. Thus, TACR3 is a locus for DNA methylation changes in response to repeated cocaine administration and its establishment as a reinforcer, in support of other evidence implicating the NK3-R in reinforcement- and addiction-related processes.
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