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和三角形阿片类受体通过可分离的细胞和分子机制在前额叶皮层内调节抑制

Rebecca H Cole^1,2,3, Max E Joffe^1,2,3

¹Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 15219, USA.

bioRxiv : the preprint server for biology

|November 1, 2024

概括

通过Mu阿片受体 (MOR) 和Delta阿片受体 (DOR) 传递阿片信号,在前额叶皮层中差异调节抑制性神经传递. 了解这些途径是神经精神疾病研究的关键.

科学领域:

神经科学是一个神经科学.
神经药理学神经药理学
细胞电生理学细胞电生理学

背景情况:

在皮质抑制微电路中的异常信号与神经精神疾病有关.
神经调节系统,特别是阿片类信号传输,关键调节内部神经元 (IN) 活动和突触传输.
皮层内部神经元表达高水平的Mu阿片类受体 (MOR) 和三角阿片类受体 (DOR).

研究的目的:

通过MOR和DOR广泛描述前额叶皮层 (PFC) 微电路的调节.
阐明MOR和DOR在PFC内的抑制传输调节中的不同作用.

主要方法:

全细胞补丁电生理学电生理学
视觉遗传学视觉遗传学
用于细胞类型特定操纵的病毒工具.

主要成果:

DOR激活更有效地抑制了在前临床PFC中的自发抑制性传播.
MOR导致更大的急性抑制电气引起的GABA释放.
MOR和DOR不同调节来自特定内部神经元亚型的抑制传播 (帕瓦尔胺,索马托斯塔丁,胆囊托基宁,血管活性肠).
DOR通过前和后突触修饰影响抑制传播,而MOR则在体突触或前突触区中起作用.

结论:

片受体信号传递,特别是MOR和DOR,在调节PFC抑制微电路方面发挥着差异性和关键作用.
这些发现提供了关于阿片类受体如何调节抑制性传播的详细理解,为神经精神疾病治疗提供了潜在的点.

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