Expression of TET1 dioxygenase, which catalyzes the conversion of 5-methylcytosine to 5-hydroxymethylcytosine, is downregulated by repeated cocaine administration in mouse nucleus accumbens, where it controls cocaine reward. Genome-wide mapping of 5-hydroxymethylcytosine in this brain region reveals novel modes of epigenetic regulation by cocaine.
- Jian Feng
- Ningyi Shao
- Eric J Nestler