PSMC5, a 19S Proteasomal ATPase, Regulates Cocaine Action in the Nucleus Accumbens.

PSMC5, a 19S Proteasomal ATPase, Regulates Cocaine Action in the Nucleus Accumbens.
复制标题

PSMC5是一种19S蛋白酶体ATPase,调节可卡因在伏隔核中的可卡因作用。

DOI:
10.1371/journal.pone.0126710
复制
发表时间:
2015
期刊:
影响因子:
3.7
通讯作者:
Nestler EJ
Nestler EJ
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ohnishi YH;Ohnishi YN;Nakamura T;Ohno M;Kennedy PJ;Ohkawa Y;Nishi A;Neve R;Tsuzuki T;Nestler EJ

文献摘要

参考文献

被引文献

相似文献

ΔFosB是一种稳定的转录因子,在长期暴露于可卡因或其他滥用药物的情况下,在大脑奖赏回路的关键部分伏隔核(NAc)中积累。虽然已知ΔFosB与Jun家族成员异源二聚化形成活性转录因子复合物,但迄今为止还没有对大脑中ΔFosB的其他可能结合伙伴进行开放式探索。在这里,通过酵母双杂交实验,我们鉴定出psmc5 -也被称为SUG1,一个含有atp酶的19S蛋白酶体复合物亚基-作为一种新的与ΔFosB相互作用的蛋白。我们验证了内源性ΔFosB和NAc中的PSMC5之间的相互作用,并证明这两种蛋白也与其他与基因激活相关的染色质调节蛋白形成复合物。我们继续表明,慢性可卡因会增加NAc中PSMC5的核水平,而不是细胞质水平,PSMC5在这一大脑区域的过度表达促进了对可卡因的运动反应。总之,这些发现描述了一种有助于ΔFosB作用的新机制,并首次暗示PSMC5参与可卡因诱导的分子和行为可塑性。
ΔFosB is a stable transcription factor which accumulates in the nucleus accumbens (NAc), a key part of the brain’s reward circuitry, in response to chronic exposure to cocaine or other drugs of abuse. While ΔFosB is known to heterodimerize with a Jun family member to form an active transcription factor complex, there has not to date been an open-ended exploration of other possible binding partners for ΔFosB in the brain. Here, by use of yeast two-hybrid assays, we identify PSMC5—also known as SUG1, an ATPase-containing subunit of the 19S proteasomal complex—as a novel interacting protein with ΔFosB. We verify such interactions between endogenous ΔFosB and PSMC5 in the NAc and demonstrate that both proteins also form complexes with other chromatin regulatory proteins associated with gene activation. We go on to show that chronic cocaine increases nuclear, but not cytoplasmic, levels of PSMC5 in the NAc and that overexpression of PSMC5 in this brain region promotes the locomotor responses to cocaine. Together, these findings describe a novel mechanism that contributes to the actions of ΔFosB and, for the first time, implicates PSMC5 in cocaine-induced molecular and behavioral plasticity.
DOI: 10.1111/j.1460-9568.2007.05575.x
发表时间: 2007-05-01
影响因子: 3.4
作者:
Carle, Tiffany L.;Ohnishi, Yoshinori N.;Nestler, Eric J.
通讯作者: Nestler, Eric J.
DOI: 10.1002/syn.20500
发表时间: 2008-05-01
期刊: SYNAPSE
影响因子: 2.3
作者:
Perrotti, L. I.;Weaver, R. R.;Nestler, E. J.
通讯作者: Nestler, E. J.
DOI: 10.1073/pnas.88.21.9578
发表时间: 1991-11-01
影响因子: 11.1
作者:
CHIEN, CT;BARTEL, PL;FIELDS, S
通讯作者: FIELDS, S
DOI: 10.1073/pnas.94.19.10397
发表时间: 1997-09-16
影响因子: 11.1
作者:
Hiroi, N;Brown, JR;Nestler, EJ
通讯作者: Nestler, EJ
DOI: 10.1016/0092-8674(88)90030-x
发表时间: 1988-11-04
期刊: CELL
影响因子: 64.5
作者:
MA, J;PTASHNE, M
通讯作者: PTASHNE, M