2017
DOI: 10.1016/j.biopsych.2016.05.025
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Activity-Regulated Cytoskeleton-Associated Protein Accumulates in the Nucleus in Response to Cocaine and Acts as a Brake on Chromatin Remodeling and Long-Term Behavioral Alterations

Abstract: Cocaine induces the rapid induction of Arc and its nuclear accumulation in striatal neurons. Locally, it alters the nucleosomal response, and acts as a brake on chromatin remodeling and gene regulation. These original observations posit Arc as a major homeostatic modulator of molecular and behavioral responses to cocaine. Thus, modulating Arc levels may provide promising therapeutic approaches in drug addiction.

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Cited by 47 publications
(50 citation statements)
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“…Our observations here reveal reliable anxiolytic-like effects in Arc KO mice across three different behavioral tests. While previous reports using the same strain of Arc KO mice have noted significant decreases 60 and increases 58 in locomotion, we observe no significant differences in Arc KO mouse activity in a locomotor assay ( Figure 1D-F). Arc KO mice also did not show increased activity in the social novelty assay (Figure 2B,D).…”
Section: Discussioncontrasting
confidence: 99%
“…Our observations here reveal reliable anxiolytic-like effects in Arc KO mice across three different behavioral tests. While previous reports using the same strain of Arc KO mice have noted significant decreases 60 and increases 58 in locomotion, we observe no significant differences in Arc KO mouse activity in a locomotor assay ( Figure 1D-F). Arc KO mice also did not show increased activity in the social novelty assay (Figure 2B,D).…”
Section: Discussioncontrasting
confidence: 99%
“…Increased Arc/Arg3.1 levels were preferentially found in the D1R-expressing SPNs located in striosome compartments. These results extend earlier studies showing that acute psychostimulant administration upregulates Arc/Arg3.1 transcripts and protein levels in the striatum (Fosnaugh et al, 1995; Tan et al, 2000; Klebaur et al, 2002; Fumagalli et al, 2006; Salery et al, 2016). While Arc/Arg3.1 expression is often used as a marker of neuronal activity, convergent evidence suggests that the induction of this plasticity-associated gene would sustain homeostatic responses.…”
Section: Discussionsupporting
confidence: 90%
“…Overall we focus on three select IEGs that have been examined in MSN subtypes in psychostimulant action. However, examination of other psychostimulant relevant IEGs, such as Arc and CREB (Carlezon et al, 1998; Salery et al, 2017), in MSN subtypes will provide a more comprehensive understanding of IEG function in striatal neuron subtypes in psychostimulant abuse. These MSN subtype specific studies have been restricted to non-contingent behaviors or the acquisition phase of self-administration, in the case of ∆FosB.…”
Section: Resultsmentioning
confidence: 99%