Expression of the Striatal DARPP-32/ARPP-21 Phenotype in GABAergic Neurons Requires NeurotrophinsIn VivoandIn Vitro

Abstract excerpt

The medium spiny neuron (MSN) is the major output neuron of the caudate nucleus and uses GABA as its primary neurotransmitter. A majority of MSNs coexpress DARPP-32 and ARPP-21, two dopamine and cyclic AMP-regulated phosphoproteins, and most of the matrix neurons express calbindin. DARPP-32 is the most commonly used MSN marker, but previous attempts to express this gene in vitro have failed. In this study we...

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