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首页> 外文期刊>Neuron >Phosphodiesterase 10A Inhibition Improves Cortico-Basal Ganglia Function in Huntington's Disease Models
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Phosphodiesterase 10A Inhibition Improves Cortico-Basal Ganglia Function in Huntington's Disease Models

机译:磷酸二酯酶10A抑制改善亨廷顿病模型中的皮质基底神经节功能。

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摘要

Huntington's disease (HD) symptoms are driven to a large extent by dysfunction of the basal ganglia circuitry. HD patients exhibit reduced striatal phoshodiesterase 10 (PDE10) levels. Using HD mouse models that exhibit reduced PDE10, we demonstrate the benefit of pharmacologic PDE10 inhibition to acutely correct basal ganglia circuitry deficits. PDE10 inhibition restored corticostriatal input and boosted cortically driven indirect pathway activity. Cyclic nucleotide signaling is impaired in HD models, and PDE10 loss may represent a homeostatic adaptation to maintain signaling. Elevation of both cAMP and cGMP by PDE10 inhibition was required for rescue. Phosphoproteomic profiling of striatum in response to PDE10 inhibition highlighted plausible neural substrates responsible for the improvement. Early chronic PDE10 inhibition in Q175 mice showed improvements beyond those seen with acute administration after symptom onset, including partial reversal of striatal deregulated transcripts and the prevention of the emergence of HD neurophysiological deficits.
机译:亨廷顿舞蹈病(HD)症状在很大程度上是由基底神经节电路功能障碍引起的。 HD患者的纹状体磷酸二酯酶10(PDE10)水平降低。使用表现出降低的PDE10的高清小鼠模型,我们证明了药理学上的PDE10抑制作用可以有效地纠正基底神经节电路缺陷。 PDE10抑制恢复了皮层皮质的输入并增强了皮质驱动的间接途径的活性。在HD模型中,环状核苷酸信号传导受到损害,PDE10的缺失可能代表体内维持信号传导的稳态调节。营救需要通过PDE10抑制使cAMP和cGMP升高。响应PDE10抑制的纹状体的磷酸化蛋白质组分析突显了造成这种改善的可能的神经底物。 Q175小鼠的早期慢性PDE10抑制作用比症状发作后的急性给药表现出更大的改善,包括部分逆转纹状体失调的转录本和预防HD神经生理缺陷的出现。

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