当前位置: X-MOL 学术Neuroscience › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Long-term Changes in the Central Amygdala Proteome in Rats with a History of Chronic Cocaine Self-administration.
Neuroscience ( IF 3.3 ) Pub Date : 2020-06-13 , DOI: 10.1016/j.neuroscience.2020.06.011
Peter U Hámor 1 , Mariola J Edelmann 2 , Christina Gobin 3 , Marek Schwendt 1
Affiliation  

The central nucleus of the amygdala (CeA) is a striatum-like structure that contains mainly inhibitory circuits controlling a repertoire of (mal)adaptive behaviors related to pain, anxiety, motivation, and addiction. Neural activity in the CeA is also necessary for the expression of persistent and robust drug seeking, also termed ‘incubation of drug craving.’ However, neuroadaptations within this brain region supporting incubated drug craving have not been characterized. Here, we conducted a comprehensive analysis of protein expression in the CeA of male rats after prolonged (45-day) abstinence from extended-access cocaine self-administration using a quantitative proteomic approach. The proteomic analysis identified 228 unique proteins altered in cocaine rats relative to animals that received saline. Out of the identified proteins, 160 were downregulated, while 68 upregulated. Upregulation of tyrosine hydroxylase and downregulation of neural cell-adhesion protein contactin-1 were validated by immunoblotting. Follow-up analysis by the Ingenuity Pathway Analysis tool revealed alterations in protein networks associated with several neurobehavioral disorders, cellular function and morphology, as well as axogenesis, long-term potentiation, and receptor signaling pathways. This study suggests that chronic cocaine self-administration, followed by a prolonged abstinence results in reorganization of specific protein signaling networks within the CeA that may underlie incubated cocaine craving and identifies potential novel ‘druggable’ targets for the treatment of cocaine use disorder (CUD).



中文翻译:

有慢性可卡因自我给药史的大鼠中央杏仁核蛋白质组的长期变化。

杏仁核 (CeA) 的中央核是纹状体样结构,主要包含控制与疼痛、焦虑、动机和成瘾相​​关的(不良)适应性行为的抑制回路。CeA 中的神经活动对于表达持续和强烈的药物寻求也是必要的,也称为“药物渴望的孵化”。然而,这个大脑区域内的神经适应支持孵化的药物渴望尚未得到表征。在这里,我们使用定量蛋白质组学方法对长期(45 天)禁欲延长可卡因自我给药后雄性大鼠的 CeA 中的蛋白质表达进行了综合分析。蛋白质组学分析确定了与接受盐水的动物相比,可卡因大鼠中 228 种独特的蛋白质发生了改变。在鉴定出的蛋白质中,160 个下调,68 个上调。通过免疫印迹验证酪氨酸羟化酶的上调和神经细胞粘附蛋白 contactin-1 的下调。Ingenuity Pathway Analysis 工具的后续分析揭示了与几种神经行为障碍、细胞功能和形态以及轴突、长时程增强和受体信号通路相关的蛋白质网络的改变。这项研究表明,慢性可卡因自我给药,然后长期戒断会导致 CeA 内特定蛋白质信号网络的重组,这可能是孵化可卡因渴望的基础,并确定了治疗可卡因使用障碍 (CUD) 的潜在新型“可成药”目标. 通过免疫印迹验证酪氨酸羟化酶的上调和神经细胞粘附蛋白 contactin-1 的下调。Ingenuity Pathway Analysis 工具的后续分析揭示了与几种神经行为障碍、细胞功能和形态以及轴突、长时程增强和受体信号通路相关的蛋白质网络的改变。这项研究表明,慢性可卡因自我给药,然后长期戒断会导致 CeA 内特定蛋白质信号网络的重组,这可能是孵化可卡因渴望的基础,并确定了治疗可卡因使用障碍 (CUD) 的潜在新型“可成药”目标. 通过免疫印迹验证酪氨酸羟化酶的上调和神经细胞粘附蛋白 contactin-1 的下调。Ingenuity Pathway Analysis 工具的后续分析揭示了与几种神经行为障碍、细胞功能和形态以及轴突、长时程增强和受体信号通路相关的蛋白质网络的改变。这项研究表明,慢性可卡因自我给药,然后长期戒断会导致 CeA 内特定蛋白质信号网络的重组,这可能是孵化可卡因渴望的基础,并确定了治疗可卡因使用障碍 (CUD) 的潜在新型“可成药”目标. Ingenuity Pathway Analysis 工具的后续分析揭示了与几种神经行为障碍、细胞功能和形态以及轴突、长时程增强和受体信号通路相关的蛋白质网络的改变。这项研究表明,慢性可卡因自我给药,然后长期戒断会导致 CeA 内特定蛋白质信号网络的重组,这可能是孵化可卡因渴望的基础,并确定了治疗可卡因使用障碍 (CUD) 的潜在新型“可成药”目标. Ingenuity Pathway Analysis 工具的后续分析揭示了与几种神经行为障碍、细胞功能和形态以及轴突、长时程增强和受体信号通路相关的蛋白质网络的改变。这项研究表明,慢性可卡因自我给药,然后长期戒断会导致 CeA 内特定蛋白质信号网络的重组,这可能是孵化可卡因渴望的基础,并确定了治疗可卡因使用障碍 (CUD) 的潜在新型“可成药”目标.

更新日期:2020-08-02
down
wechat
bug