Title : Diazepam Accelerates GABAAR Synaptic Exchange and Alters Intracellular Trafficking.

Pub. Date : 2019

PMID : 31080408






6 Functional Relationships(s)
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1 Diazepam Accelerates GABAAR Synaptic Exchange and Alters Intracellular Trafficking. Diazepam gamma-aminobutyric acid (GABA) A receptor, subunit gamma 2 Mus musculus
2 In contrast, both gamma2 and the postsynaptic scaffolding protein gephyrin showed diminished total protein levels following a single DZP treatment in vitro and in mouse cortical tissue. Diazepam gamma-aminobutyric acid (GABA) A receptor, subunit gamma 2 Mus musculus
3 Selective immunoprecipitation of gamma2 from cultured neurons revealed enhanced ubiquitination of this subunit following DZP exposure. Diazepam gamma-aminobutyric acid (GABA) A receptor, subunit gamma 2 Mus musculus
4 Moreover, we found DZP simultaneously enhanced synaptic exchange of both gamma2-GABAARs and gephyrin using fluorescence recovery after photobleaching (FRAP) techniques. Diazepam gamma-aminobutyric acid (GABA) A receptor, subunit gamma 2 Mus musculus
5 Finally we provide the first proteomic analysis of the BZD sensitive GABAAR interactome in DZP vs. vehicle treated mice. Diazepam gamma-aminobutyric acid (GABA) A receptor, subunit gamma 2 Mus musculus
6 Collectively, our results indicate DZP exposure elicits down-regulation of gephyrin scaffolding and BZD sensitive GABAAR synaptic availability via multiple dynamic trafficking processes. Diazepam gamma-aminobutyric acid (GABA) A receptor, subunit gamma 2 Mus musculus