Mitophagy in the basolateral amygdala mediates increased anxiety induced by aversive social experience.

Mitophagy in the basolateral amygdala mediates increased anxiety induced by aversive social experience.
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DOI:
10.1016/j.neuron.2021.09.008
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发表时间:
2021-12-01
期刊:
影响因子:
16.2
通讯作者:
Li Z
Li Z
中科院分区:
医学1区
文献类型:
--
作者:
Duan K;Gu Q;Petralia RS;Wang YX;Panja D;Liu X;Lehmann ML;Zhu H;Zhu J;Li Z

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心理社会压力是焦虑症的常见危险因素。社会心理压力的焦虑效应的细胞机制在很大程度上还不清楚。在这里,我们表明,慢性社会失败(CSD)的压力在小鼠引起线粒体损伤,触发PINK 1-帕金线粒体自噬通路选择性地在杏仁核。这种线粒体自噬升高导致线粒体过度消除和随后的线粒体缺陷。基底外侧杏仁核(BLA)中的线粒体缺陷导致BLA-BNST(终纹床核)抗焦虑通路中的突触传递减弱和焦虑增加。CSD诱导的焦虑样行为增加在PINK 1 −/−和Parkin−−小鼠中被消除,并通过BLA-BNST突触的光遗传学激活而缓解。本研究确定了线粒体自噬在心理遗传性应激诱导的焦虑升高中的一个意料之外的作用,并揭示了线粒体缺乏足以增加焦虑,并成为心理社会应激诱导的焦虑增加的基础。因此,线粒体和线粒体自噬可以潜在地靶向改善焦虑。Duan等人揭示了线粒体自噬在慢性心因性应激引起的焦虑中的关键作用。线粒体自噬被应激增强,导致线粒体丢失,导致由延伸的杏仁核介导的抗焦虑通路中的突触减弱。因此,线粒体和线粒体自噬可能是缓解焦虑的靶点。
Psychosocial stress is a common risk factor for anxiety disorders. The cellular mechanism for the anxiogenic effect of psychosocial stress is largely unclear. Here, we show that chronic social defeat (CSD) stress in mice causes mitochondrial impairment which triggers the PINK1-Parkin mitophagy pathway selectively in the amygdala. This mitophagy elevation causes excessive mitochondrial elimination and consequent mitochondrial deficiency. Mitochondrial deficiency in the basolateral amygdalae (BLA) causes weakening of synaptic transmission in the BLA-BNST (bed nucleus of the stria terminalis) anxiolytic pathway and increased anxiety. CSD-induced increase in anxiety-like behaviors is abolished in PINK1−/− and Parkin−− mice and alleviated by optogenetic activation of the BLA–BNST synapse. This study identifies an unsuspected role of mitophagy in psychogenetic stress-induced anxiety elevation, and reveals that mitochondrial deficiency is sufficient to increase anxiety and underlies psychosocial stress-induced anxiety increase. Mitochondria and mitophagy, therefore, can be potentially targeted to ameliorate anxiety. Duan et al. reveal a key role of mitophagy in anxiety induced by chronic psychogenic stress. Mitophagy is enhanced by stress to cause mitochondrial loss, leading to synaptic weakening in the anxiolytic pathway mediated by the extended amygdala. Mitochondria and mitophagy, therefore, may be targeted to ameliorate anxiety.
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