Upregulated inwardly rectifying K + current-mediated hypoactivity of parvalbumin interneuron underlies autism-like deficits in Bod1-deficient mice.

IF 2.2 4区 医学 Q3 MEDICINE, RESEARCH & EXPERIMENTAL
Chen Li, Kerui Wang, Xingfeng Mao, Xiuxiu Liu, Yingmei Lu
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引用次数: 0

Abstract

Parvalbumin-positive (PV +) interneuron dysfunction is believed to be linked to autism spectrum disorder (ASD), a neurodevelopmental disorder, characterized by social deficits and stereotypical behaviors. However, the underlying mechanisms of PV + interneuron dysfunction remain largely unclear. Here, we found that a deficiency of biorientation defective 1 ( Bod1) in PV + interneuron led to an ASD-like phenotype in Pvalb-Cre; Bod1 f/f mice. Mechanistically, we identified that Bod1 deficiency induced hypoactivity of PV + interneuron and hyperactivity of calcium/calmodulin-dependent protein kinase Ⅱ alpha (CaMKⅡα) neurons in the medial prefrontal cortex (mPFC), as determined by whole-cell patch-clamp recording. Additionally, it concurrently decreased the power of high gamma oscillation, as assessed by in vivo multi-channel electrophysiological recording. Furthermore, we found that Bod1 deficiency enhanced inwardly rectifying K + current, leading to an increase in the resting membrane potential of PV + interneurons. Importantly, the gain-of-function of Bod1 improved social deficits and stereotypical behaviors in Pvalb-Cre; Bod1 f/f mice. These findings provide mechanistic insights into the PV + interneuron dysfunction and suggest new strategies for developing PV + interneuron therapies for ASD.

内向整流 K + 电流介导的副发光体中间神经元低活性上调是 Bod1 缺陷小鼠自闭症样缺陷的基础。
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来源期刊
Journal of Biomedical Research
Journal of Biomedical Research MEDICINE, RESEARCH & EXPERIMENTAL-
CiteScore
4.60
自引率
0.00%
发文量
69
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