The neuronal PAS domain protein 4 (Npas4) is required for new and reactivated fear memories.

The neuronal PAS domain protein 4 (Npas4) is required for new and reactivated fear memories.
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DOI:
10.1371/journal.pone.0023760
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Schafe GE
Schafe GE
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ploski JE;Monsey MS;Nguyen T;DiLeone RJ;Schafe GE

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神经元PAS结构域蛋白4(Npas4)是神经元活性依赖性立即早期基因,其最近被鉴定为调节控制抑制性突触发育和突触可塑性的基因的转录的转录因子。然而,Npas4在学习和记忆中的作用目前尚不清楚。在这里,我们系统地研究了Npas4在听觉巴甫洛夫恐惧条件反射中的作用,这是一种杏仁核依赖的情感学习形式。在我们的第一个系列的实验中,我们表明,Npas4 mRNA和蛋白质调节大鼠杏仁核(LA)在学习依赖的方式。此外,通过腺相关病毒(AAV)介导的RNAi基因递送在LA中敲低Npas4蛋白,观察到损害恐惧记忆形成,而先天恐惧和恐惧记忆的表达不受影响。在我们的第二个系列的实验中,我们表明,Npas4蛋白在LA的听觉恐惧记忆的检索和Npas4在LA的敲低损害保留的重新激活,但不是一个非重新激活,恐惧记忆的调节。总的来说,我们的研究结果提供了Npas4在学习和记忆中的功能作用的第一个全面的看法。
The Neuronal PAS domain protein 4 (Npas4) is a neuronal activity-dependent immediate early gene that has recently been identified as a transcription factor which regulates the transcription of genes that control inhibitory synapse development and synaptic plasticity. The role Npas4 in learning and memory, however, is currently unknown. Here, we systematically examine the role of Npas4 in auditory Pavlovian fear conditioning, an amygdala-dependent form of emotional learning. In our first series of experiments, we show that Npas4 mRNA and protein are regulated in the rat lateral nucleus of the amygdala (LA) in a learning-dependent manner. Further, knockdown of Npas4 protein in the LA via adeno-associated viral (AAV) mediated gene delivery of RNAi was observed to impair fear memory formation, while innate fear and the expression of fear memory were not affected. In our second series of experiments, we show that Npas4 protein is regulated in the LA by retrieval of an auditory fear memory and that knockdown of Npas4 in the LA impairs retention of a reactivated, but not a non-reactivated, fear memory. Collectively, our findings provide the first comprehensive look at the functional role of Npas4 in learning and memory.
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影响因子: 64.8
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期刊: NATURE
影响因子: 64.8
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