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首页> 外文期刊>Neuron >The GABA A Receptor β Subunit Is Required for Inhibitory Transmission
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The GABA A Receptor β Subunit Is Required for Inhibitory Transmission

机译:GABA受体β亚基需要抑制速度

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While the canonical assembly of a GABAAreceptor contains two α subunits, two β subunits, and a fifth subunit, it is unclear which variants of each subunit are necessary for native receptors. We used CRISPR/Cas9 to dissect the role of the GABAAreceptor β subunits in inhibitory transmission onto hippocampal CA1 pyramidal cells and found that deletion of all β subunits 1, 2, and 3 completely eliminated inhibitory responses. In addition, only knockout of β3, alone or in combination with another β subunit, impaired inhibitory synaptic transmission. We found that β3 knockout impairs inhibitory input from PV but not SOM expressing interneurons. Furthermore, expression of β3 alone on the background of the β1-3 subunit knockout was sufficient to restore synaptic and extrasynaptic inhibitory transmission. These findings reveal a crucial role for the β3 subunit in inhibitory transmission and identify a synapse-specific role of the β3 subunit in GABAergic synaptic transmission.
机译:虽然GabaeCeptor的规范组装含有两种α亚基,两个β亚基和第五个亚基,但是目前尚不清楚每种亚基的哪些变体对本地受体是必需的。 我们使用CRISPR / CAS9将Gabaereceptorβ亚基在抑制性传播中的作用剖析到海马CA1锥体细胞上,发现缺失所有β亚基1,2和3完全消除的抑制反应。 另外,仅敲除β3,单独或与另一个β亚基,抑制突触传递受损。 我们发现β3敲除损害来自PV的抑制性,但不是表达综合征的索华州。 此外,单独在β1-3亚基敲除背景上表达β3的表达足以恢复突触和促进抑制抑制率。 这些发现揭示了β3亚基在抑制症中的β3亚基的关键作用,并鉴定了β3亚基在加巴替氏突触传递中的突触特异性作用。

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