Repeated cocaine weakens GABA(B)-Girk signaling in layer 5/6 pyramidal neurons in the prelimbic cortex.
Repeated cocaine weakens GABA(B)-Girk signaling in layer 5/6 pyramidal neurons in the prelimbic cortex.
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DOI:
10.1016/j.neuron.2013.07.019
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发表时间:
2013-10-02
期刊:
影响因子:
16.2
通讯作者:
Wickman K
中科院分区:
文献类型:
--
作者:
Hearing M;Kotecki L;Marron Fernandez de Velasco E;Fajardo-Serrano A;Chung HJ;Luján R;Wickman K
Repeated cocaine exposure triggers adaptations in Layer 5/6 glutamatergic neurons in the medial prefrontal cortex (mPFC) that promote behavioral sensitization and drug-seeking behavior. While suppression of metabotropic inhibitory signaling has been implicated in these behaviors, underlying mechanisms are unknown. Here, we show that Girk/KIR3 channels mediate most of the GABAB receptor (GABABR)-dependent inhibition of Layer 5/6 pyramidal neurons in the mPFC and that repeated cocaine suppresses this pathway. This adaptation was selective for GABABR-dependent Girk signaling in Layer 5/6 pyramidal neurons of the prelimbic cortex (PrLC) and involved a D1/5 dopamine receptor- and phosphorylation-dependent internalization of GABABR and Girk channels. Persistent suppression of Girk signaling in Layer 5/6 of the dorsal mPFC enhanced cocaine-induced locomotor activity and occluded behavioral sensitization. Thus, the cocaine-induced suppression of GABABR-Girk signaling in Layer 5/6 pyramidal neurons of the prelimbic cortex appears to represent an early adaptation critical for promoting addiction-related behavior.
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影响因子:
16.2
作者:
Deng, Pan-Yue;Xiao, Zhaoyang;Yang, Chuanxiu;Rojanathammanee, Lalida;Grisanti, Laurel;Watt, John;Geiger, Jonathan D.;Liu, Rugao;Porter, James E.;Lei, Saobo
通讯作者:
Lei, Saobo
影响因子:
4.7
作者:
Arora, Devinder;Haluk, Desirae M.;Wickman, Kevin
通讯作者:
Wickman, Kevin
影响因子:
2.5
作者:
KAWAGUCHI, Y
通讯作者:
KAWAGUCHI, Y
DOI:
10.1523/jneurosci.0494-11.2011
发表时间:
2011-08-24
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Arora D;Hearing M;Haluk DM;Mirkovic K;Fajardo-Serrano A;Wessendorf MW;Watanabe M;Luján R;Wickman K
通讯作者:
Wickman K
影响因子:
5.3
作者:
Dong, Y;Nasif, FJ;White, FJ
通讯作者:
White, FJ