Journal
CELLULAR AND MOLECULAR LIFE SCIENCES
Volume 71, Issue 8, Pages 1395-1415Publisher
SPRINGER BASEL AG
DOI: 10.1007/s00018-013-1501-3
Keywords
Central nervous system; GABAergic neuron; Cell differentiation; Neurogenesis; Transcription factor
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Funding
- Academy of Finland
- Sigrid Juselius Foundation
- Finnish Parkinson's Foundation
- University of Helsinki
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Neurons using gamma-aminobutyric acid (GABA) as their neurotransmitter are the main inhibitory neurons in the mature central nervous system (CNS) and show great variation in their form and function. GABAergic neurons are produced in all of the main domains of the CNS, where they develop from discrete regions of the neuroepithelium. Here, we review the gene expression and regulatory mechanisms controlling the main steps of GABAergic neuron development: early patterning of the proliferative neuroepithelium, production of postmitotic neural precursors, establishment of their identity and migration. By comparing the molecular regulation of these events across CNS, we broadly identify three regions utilizing distinct molecular toolkits for GABAergic fate determination: telencephalon-anterior diencephalon (DLX2 type), posterior diencephalon-midbrain (GATA2 type) and hindbrain-spinal cord (PTF1A and TAL1 types). Similarities and differences in the molecular regulatory mechanisms reveal the core determinants of a GABAergic neuron as well as provide insights into generation of the vast diversity of these neurons.
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