Gene expression analysis defines differences between region-specific GABAergic neurons

Molecular and Cellular Neurosciences
Olaf HardtAndreas Bosio

Abstract

Gamma-aminobutyric acid (GABA)ergic neurons are a diverse group of inhibitory neurons playing crucial roles in information processing. We analyzed the gene expression of regionally defined GABAergic neurons from the cortex, olfactory bulb, striatum, and cerebellum of glutamate decarboxylase 67-green fluorescence protein (GAD67-GFP) knock-in mice. We introduce a generally applicable method for singularization of brain cells, flow cytometric enrichment, and global mRNA amplification for sensitive gene expression profiling. Systematic quantification elicited a high dynamic range of GABAergic cell numbers in different brain regions. Clustering of our gene expression results revealed major differences between hind and forebrain GABAergic neurons indicating that the development of GABAergic neurons depends on their regional location. While GABAergic neurons of the forebrain are characterized by three main groups of transcription factors of the Distal-less-family, the POU-family, and ETS/FOX family, specific members of the ZIC- and LHX-family of transcription factors appear to define hindbrain inhibitory neurons.

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Citations

Jul 9, 2009·Journal of Visualized Experiments : JoVE·Sandra PennartzAndreas Bosio
Apr 8, 2009·Experimental Neurology·Christina ChatziSanbing Shen
May 9, 2015·Functional & Integrative Genomics·Sanaya F BamjiCynthia Corbitt
Dec 6, 2017·Neuroscience Research·Keita FukumotoToru Takumi

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