SCOP/PHLPP1β in the basolateral amygdala regulates circadian expression of mouse anxiety-like behavior.

SCOP/PHLPP1β in the basolateral amygdala regulates circadian expression of mouse anxiety-like behavior.
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DOI:
10.1038/srep33500
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发表时间:
2016-09-19
期刊:
影响因子:
4.6
通讯作者:
Fukada Y
Fukada Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Nakano JJ;Shimizu K;Shimba S;Fukada Y

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虽然生物钟的破坏会引发一系列的情感异常,但生物钟如何调节哺乳动物的情感仍不清楚。在这里,我们描述了小鼠焦虑样行为的时间依赖性调节。我们发现,焦虑样行为在小鼠中以昼夜节律的方式表达,并证明端脑背侧(dTel)中的时钟机制是焦虑样行为的时间依赖性调节所必需的。我们确定视交叉上核昼夜节律振荡蛋白(SCOP/PHLPP 1 β)是介导时钟下游这种时间调节的重要细胞内信号分子。使用病毒介导的,基底外侧杏仁核(BLA)特异性敲除的Scop,我们表明,删除SCOP在BLA产生抗焦虑作用的高架十字迷宫在主观的夜晚早期,从而钝化的昼夜变化的焦虑样行为。我们的结论是,BLA中SCOP的昼夜节律表达在焦虑样行为中产生昼夜节律性方面发挥着关键作用。我们的研究结果表明,SCOP作为焦虑样行为的调节剂,并揭示其在BLA的焦虑功能中的关键作用。
While disruption of the circadian clock triggers a spectrum of affective abnormalities, how the clock regulates mammalian emotionality remains unclear. Here, we characterized the time-of-day-dependent regulation of mouse anxiety-like behaviors. We show that anxiety-like behaviors are expressed in a circadian manner in mice and demonstrate that the clock machineries in the dorsal telencephalon (dTel) are required for the time-of-day-dependent regulation of anxiety-like behaviors. We identify suprachiasmatic nucleus circadian oscillatory protein (SCOP/PHLPP1β) as an essential intracellular signaling molecule mediating this temporal regulation downstream of the clock. Using viral-mediated, basolateral amygdala (BLA)-specific knockout of Scop, we demonstrate that deletion of SCOP in the BLA exerts anxiolytic effects on the elevated plus maze at early subjective night, thereby blunting the circadian variation in the anxiety-like behavior. We conclude that the circadian expression of SCOP in the BLA plays a key role in generating circadian rhythmicity in the anxiety-like behavior. Our results demonstrate SCOP as a regulator of anxiety-like behaviors and reveal its key roles in the anxiogenic functions of the BLA.
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