ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2008
Zebrafish dorsal root ganglia neural precursor cells adopt a glial fate in the absence of neurogenin1.
Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.
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Who cites it
50 citing papers in PubMed, 109 citations in OpenAlex.
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
The proneural transcription factor neurogenin 1 (neurog1) has been shown to be a key regulator of dorsal root ganglion (DRG) neuron development. Here we use a novel transgenic zebrafish line to demonstrate that the neural crest population that gives rise to DRG neurons becomes fate restricted to a neuronal/glial precursor before the onset of neurog1 function. We generated a stable transgenic zebrafish line that carries a modified bacterial artificial chromosome that expresses green fluorescent protein (GFP) under the control of the neurog1 promoter [Tg(neurog1:EGFP)]. In contrast to previously described neurog1 transgenic lines, Tg(neurog1:EGFP) expresses GFP in DRG neuronal precursors cells as they migrate ventrally and after their initial differentiation as neurons. Using this line, we are able to track the fate of DRG neuronal precursor cells during their specification. When Neurog1 function is blocked, either by neurog1 morpholino antisense oligonucleotide injection or in neurog1 mutants, GFP expression initiates in neural crest cells, although they fail to form DRG neurons. Rather, these cells take on a glial-like morphology, retain proliferative capacity, and express glial markers and become associated with the ventral motor root. These results suggest that, within the zebrafish neural crest, there is a fate-restricted lineage that is limited to form either sensory neurons or glia in the developing DRG. Neurog1 acts as the key factor in this lineage to direct the formation of sensory neurons.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.