Dopaminylation of histone H3 in ventral tegmental area regulates cocaine seeking

Ashley E. Lepack, Craig T. Werner, Andrew F. Stewart, Sasha L. Fulton, Ping Zhong, Lorna A. Farrelly, Alexander C.W. Smith, Aarthi Ramakrishnan, Yang Lyu, Ryan M. Bastle, Jennifer A. Martin, Swarup Mitra, Richard M. O'Connor, Zi Jun Wang, Henrik Molina, Gustavo Turecki, Li Shen, Zhen Yan, Erin S. Calipari, David M. DietzPaul J. Kenny, Ian Maze

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Vulnerability to relapse during periods of attempted abstinence from cocaine use is hypothesized to result from the rewiring of brain reward circuitries, particularly ventral tegmental area (VTA) dopamine neurons. How cocaine exposures act on midbrain dopamine neurons to precipitate addiction-relevant changes in gene expression is unclear. We found that histone H3 glutamine 5 dopaminylation (H3Q5dop) plays a critical role in cocaine-induced transcriptional plasticity in the midbrain. Rats undergoing withdrawal from cocaine showed an accumulation of H3Q5dop in the VTA. By reducing H3Q5dop in the VTA during withdrawal, we reversed cocaine-mediated gene expression changes, attenuated dopamine release in the nucleus accumbens, and reduced cocaine-seeking behavior. These findings establish a neurotransmission-independent role for nuclear dopamine in relapse-related transcriptional plasticity in the VTA.

Original languageEnglish
Pages (from-to)197-201
Number of pages5
JournalScience
Volume368
Issue number6487
DOIs
StatePublished - 10 Apr 2020
Externally publishedYes

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